US20120196816A1 - Method for enhancing nutrient absorption with astragalosides - Google Patents
Method for enhancing nutrient absorption with astragalosides Download PDFInfo
- Publication number
- US20120196816A1 US20120196816A1 US13/444,765 US201213444765A US2012196816A1 US 20120196816 A1 US20120196816 A1 US 20120196816A1 US 201213444765 A US201213444765 A US 201213444765A US 2012196816 A1 US2012196816 A1 US 2012196816A1
- Authority
- US
- United States
- Prior art keywords
- formula
- astragaloside
- cells
- glucose
- isolated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- XQAQOBYQDLTXKK-RLQYZUNSSA-N [H]C1(OC2C(O)C(O)COC2([H])O[C@H]2CCC34CC35CC[C@]3(C)C([C@@]6(C)CCC(C(C)(C)C)O6)[C@@H](O)C[C@@]3(C)C5C[C@H](O)C4C2(C)C)OC(CO)C(O)C(O)C1O Chemical compound [H]C1(OC2C(O)C(O)COC2([H])O[C@H]2CCC34CC35CC[C@]3(C)C([C@@]6(C)CCC(C(C)(C)C)O6)[C@@H](O)C[C@@]3(C)C5C[C@H](O)C4C2(C)C)OC(CO)C(O)C(O)C1O XQAQOBYQDLTXKK-RLQYZUNSSA-N 0.000 description 3
- KXSJQAHQCCWAHM-JDQWSORUSA-N [H]C1(OC2C(O)C(O)COC2([H])O[C@H]2CCC34CC35CC[C@]3(C)C([C@@]6(C)CCC(C(C)(C)C)O6)[C@@H](O)C[C@@]3(C)C5C[C@H](OC3([H])OC(CO)C(O)C(O)C3O)C4C2(C)C)OC(CO)C(O)C(O)C1O Chemical compound [H]C1(OC2C(O)C(O)COC2([H])O[C@H]2CCC34CC35CC[C@]3(C)C([C@@]6(C)CCC(C(C)(C)C)O6)[C@@H](O)C[C@@]3(C)C5C[C@H](OC3([H])OC(CO)C(O)C(O)C3O)C4C2(C)C)OC(CO)C(O)C(O)C1O KXSJQAHQCCWAHM-JDQWSORUSA-N 0.000 description 3
- VZDIAABCVCUZGE-WFRCMYHSSA-N [H]C1(O[C@H]2CC3C4(CC[C@]5(C)C([C@@]6(C)CCC(C(C)(C)C)O6)[C@@H](O)C[C@@]35C)CC43CC[C@H](O)C(C)(C)C23)OC(CO)C(O)C(O)C1O Chemical compound [H]C1(O[C@H]2CC3C4(CC[C@]5(C)C([C@@]6(C)CCC(C(C)(C)C)O6)[C@@H](O)C[C@@]35C)CC43CC[C@H](O)C(C)(C)C23)OC(CO)C(O)C(O)C1O VZDIAABCVCUZGE-WFRCMYHSSA-N 0.000 description 3
- RHCRYFPVDNMJNI-AFBHFBCASA-N [H]C1(O[C@H]2CC3C4(CC[C@]5(C)C([C@@]6(C)CCC(C(C)(C)C)O6)[C@@H](O)C[C@@]35C)CC43CC[C@H](OC4([H])OCC(O)C(O)C4OC(C)=O)C(C)(C)C23)OC(CO)C(O)C(O)C1O Chemical compound [H]C1(O[C@H]2CC3C4(CC[C@]5(C)C([C@@]6(C)CCC(C(C)(C)C)O6)[C@@H](O)C[C@@]35C)CC43CC[C@H](OC4([H])OCC(O)C(O)C4OC(C)=O)C(C)(C)C23)OC(CO)C(O)C(O)C1O RHCRYFPVDNMJNI-AFBHFBCASA-N 0.000 description 3
- IPOSYKNYLFHLJD-AFBHFBCASA-N [H]C1(O[C@H]2CC3C4(CC[C@]5(C)C([C@@]6(C)CCC(C(C)(C)C)O6)[C@@H](O)C[C@@]35C)CC43CC[C@H](OC4([H])OCC(O)C(OC(C)=O)C4O)C(C)(C)C23)OC(CO)C(O)C(O)C1O Chemical compound [H]C1(O[C@H]2CC3C4(CC[C@]5(C)C([C@@]6(C)CCC(C(C)(C)C)O6)[C@@H](O)C[C@@]35C)CC43CC[C@H](OC4([H])OCC(O)C(OC(C)=O)C4O)C(C)(C)C23)OC(CO)C(O)C(O)C1O IPOSYKNYLFHLJD-AFBHFBCASA-N 0.000 description 3
- POJZPMCIVOKLBM-DMGHNNMLSA-N [H]C1(O[C@H]2CC3C4(CC[C@]5(C)C([C@@]6(C)CCC(C(C)(C)C)O6)[C@@H](O)C[C@@]35C)CC43CC[C@H](OC4([H])OCC(O)C(OC(C)=O)C4OC(C)=O)C(C)(C)C23)OC(CO)C(O)C(O)C1O Chemical compound [H]C1(O[C@H]2CC3C4(CC[C@]5(C)C([C@@]6(C)CCC(C(C)(C)C)O6)[C@@H](O)C[C@@]35C)CC43CC[C@H](OC4([H])OCC(O)C(OC(C)=O)C4OC(C)=O)C(C)(C)C23)OC(CO)C(O)C(O)C1O POJZPMCIVOKLBM-DMGHNNMLSA-N 0.000 description 3
- AAZPRKYIHHDBIO-VFBGHGRNSA-N [H]C1(O[C@H]2CC3C4(CC[C@]5(C)C([C@@]6(C)CCC(C(C)(C)C)O6)[C@@H](O)C[C@@]35C)CC43CC[C@H](OC4([H])OCC(OC(C)=O)C(O)C4OC(C)=O)C(C)(C)C23)OC(CO)C(O)C(O)C1O Chemical compound [H]C1(O[C@H]2CC3C4(CC[C@]5(C)C([C@@]6(C)CCC(C(C)(C)C)O6)[C@@H](O)C[C@@]35C)CC43CC[C@H](OC4([H])OCC(OC(C)=O)C(O)C4OC(C)=O)C(C)(C)C23)OC(CO)C(O)C(O)C1O AAZPRKYIHHDBIO-VFBGHGRNSA-N 0.000 description 3
- HIUHATDVEUBDNH-IIVKIFCCSA-N [H]C1(O[C@H]2CCC34CC35CC[C@]3(C)C([C@@]6(C)CCC(C(C)(C)C)O6)[C@@H](O)C[C@@]3(C)C5C[C@H](OC3([H])OC(CO)C(O)C(O)C3O)C4C2(C)C)OCC(O)C(O)C1O Chemical compound [H]C1(O[C@H]2CCC34CC35CC[C@]3(C)C([C@@]6(C)CCC(C(C)(C)C)O6)[C@@H](O)C[C@@]3(C)C5C[C@H](OC3([H])OC(CO)C(O)C(O)C3O)C4C2(C)C)OCC(O)C(O)C1O HIUHATDVEUBDNH-IIVKIFCCSA-N 0.000 description 3
- 0 [1*]C1CCC23CC24CCC2(C)C([4*])C([3*])CC2(C)C4CC([2*])C3C1(C)C Chemical compound [1*]C1CCC23CC24CCC2(C)C([4*])C([3*])CC2(C)C4CC([2*])C3C1(C)C 0.000 description 2
- ZLDKCHCIHFTQIR-YXHBPKHSSA-N C=C(CCC(C)C)C(C)C.CC(C)=CCCC(C)(C)O.CC(C)=CCCC(C)C.CC(C)CCC(O)C(C)(C)C.CC(C)CCCC(C)C.CC1(C)CC[C@@H](C(C)(C)C)O1 Chemical compound C=C(CCC(C)C)C(C)C.CC(C)=CCCC(C)(C)O.CC(C)=CCCC(C)C.CC(C)CCC(O)C(C)(C)C.CC(C)CCCC(C)C.CC1(C)CC[C@@H](C(C)(C)C)O1 ZLDKCHCIHFTQIR-YXHBPKHSSA-N 0.000 description 1
- OODGZSVUKISZMP-YXHBPKHSSA-N C=C(CCC(C)C)C(C)C.CC(C)=CCCC(C)(C)O.CC(C)=CCCC(C)C.CC(C)CCC(O)C(C)(C)O.CC(C)CCCC(C)C.CC1(C)CC[C@@H](C(C)(C)C)O1 Chemical compound C=C(CCC(C)C)C(C)C.CC(C)=CCCC(C)(C)O.CC(C)=CCCC(C)C.CC(C)CCC(O)C(C)(C)O.CC(C)CCCC(C)C.CC1(C)CC[C@@H](C(C)(C)C)O1 OODGZSVUKISZMP-YXHBPKHSSA-N 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/7028—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages
- A61K31/7034—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin
- A61K31/704—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin attached to a condensed carbocyclic ring system, e.g. sennosides, thiocolchicosides, escin, daunorubicin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
- A61K36/18—Magnoliophyta (angiosperms)
- A61K36/185—Magnoliopsida (dicotyledons)
- A61K36/48—Fabaceae or Leguminosae (Pea or Legume family); Caesalpiniaceae; Mimosaceae; Papilionaceae
- A61K36/481—Astragalus (milkvetch)
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/02—Nutrients, e.g. vitamins, minerals
Definitions
- the gastrointestinal tract is an important route by which the food is digested and absorbed.
- the nutritional substances such as glucose, amino acids, vitamins and other smaller molecules are absorbed along the entire tract, either by diffusion or by specialized transport processes. Instead of moving freely across the intestinal membrane to the blood stream or lymph, most of these nutritional substances are transported by a tightly regulated mechanism. Based on current understanding in cell biology and physiology, the nutritional substances are transported across the cells with specific transport proteins and channels anchored on the cell membrane.
- Na + binds to transport protein on the luminal side of the cell causing conformational change of the transport protein, which opens the binding site for glucose.
- glucose binds to the transport protein.
- the transport protein that is bound with both Na + and glucose is subjected to further conformational change to allow entry of glucose and Na + into the cells.
- This active transport of glucose involves a direct physical coupling of flows of Na + and glucose, with the energy of the process being derived from the inwardly directed gradient for Na + . Since the transport event includes a net movement of charge (the cationic Na + ion with the non-electrolyte glucose), the driving force for this uptake includes both the chemical gradient for Na + and the potential difference across the membrane. As the glucose gradually accumulates in the cell, it is subsequently transported out to the blood vessel via a glucose concentration gradient by facilitated diffusion. Similarly, other nutritional substances may be absorbed with the transport mechanism described above.
- Astragalus root Radix Astragali
- Astragalus root has been used as a traditional Chinese medicine that mainly serves to invigorate the function of the spleen and increase stamina and endurance.
- Astragalus root Radix Astragali
- Radix Astragali was found to enhance the immune system and help the human body resist virus infections, particularly in the lungs, by increasing production of interferon, an immune factor that inhibits viral growth.
- Astragalus root has been used as an adjuvant therapy in the treatment of colds and influenza.
- Radix Astragali was also reported to have effects on cardiovascular activity. Alcohol extracts of Radix Astragali enhanced both the contractility and contraction amplitude of isolated frog or toad hearts.
- astragalosides isolated from Radix Astragali have been reported to exert a positive inotropic effect on isolated rat hearts.
- Astragalus membranaceus var. mongholicus has not been implied in regulating nutrient absorption and transportation. None of the study or research has focused on regulating the nutrient absorption using saponin compounds purified from Chinese herbal medicines, particularly Astragalus membranaceus var. mongholicus.
- the present invention provides a method for enhancing the absorption of a nutrient, such as glucose, an amino acid (e.g. arginine or tryptophan), and a vitamin (e.g., folate), in a subject in need thereof.
- This method includes the steps of identifying a subject who needs up-regulation of nutrient absorption and administering to the subject an effective amount of an isolated astragaloside compound (e.g., from Astragalus membranaceus var. mongholicus ).
- an effective amount refers to the amount of each active agent required to confer therapeutic effect on the subject, either alone or in combination with one or more other active agents.
- Effective amounts vary, as recognized by those skilled in the art, depending on route of administration, excipient usage, and co-usage with other active agents.
- Subjects in need of this regulation include elderlies, juveniles, pregnant or menopausal women, post-surgery patients, and patients suffering from long-term pressure, abnormal metabolism (e.g., type II diabetics), a weakened immune system (e.g., leukemia patients, HIV carriers, and organ transplantation recipients), or other diseases/disorders listed in Table 1 below.
- the astragaloside compound preferably isolated, is an cycloartane compound of Formula
- R 1 is selected from the group consisting of H, OH, O-acetyl, O-xylopyranosyl, O-(2-acetylxylopyranosyl), O-(3-acetylxylopyranosyl), O-(2,3-diacetylxylopyranosyl), O-(2,4-diacetylxylopyranosyl), O-xylopyranosyl-(1-2)- ⁇ -D-glucopyranosyl and O-xylopyranosyl-(1-2)- ⁇ -arabinopyranosyl; R 2 is selected from the group consisting of H, OH, O-acetyl and O-glucopyranosyl, O-xylopyranosyl; R 3 is selected from the group consisting of H, OH and O-acetyl; and R 4 is selected from the group consisting of
- isolated astragaloside compound refers to an astragaloside compound prepared by a synthetic method or enriched from a natural source (e.g., Astragalus membranaceus var. mongholicus ).
- a natural source e.g., Astragalus membranaceus var. mongholicus
- an isolated astragaloside compound is a preparation that contains at least 40% (e.g., at least 95%) of the astragaloside compound by dry weight. Purity of an isolated compound can be measured by, e.g., column chromatography, mass spectrometry, high performance liquid chromatography (HPLC), NMR, or any other suitable methods.
- the astragaloside compound used in the method of this invention is selected from the group consisting of astragaloside I of Formula I:
- FIG. 1 is a line graph showing the glucose uptake rates of the Caco2 cells treated with the isolated astragaloside AS4 of Formula IV of selected concentrations;
- FIG. 2 is a line graph showing the arginine absorption rates measured in the Sink-transport across to basolateral chambers when the Caco2 monolayers were treated with the isolated astragaloside AS1 of Formula I of selected concentrations;
- FIG. 3 is a line graph showing the tryptophan absorption rates measured in the Sink-transport across to basolateral chambers when the Caco2 monolayers were treated with the isolated astragaloside AS1 of Formula I of selected concentrations;
- FIG. 4 is a line graph showing the folate uptake rates of the Caco2 cells treated with the isolated astragaloside AS1 of Formula I of a selected concentration.
- An astragaloside is defined as a triterpene saponin compound extracted from Radix Astragali , the dried root of Astragalus membranaceus (Fisch) Bunge and Astragalus mongholicus Bunge (Fabaceae).
- absorption refers to uptake of a nutrient via a passage through the intestinal epithelium and into the blood or lymph.
- gut cells generally include enterocytes, mucosal cell, and cells of intestinal epithelium responsible for nutrient absorption of the body.
- subject refers to any animal, preferably including humans, where absorption of nutrients occurs across gut cells in the subject's gastrointestinal tract.
- the present invention is based at least in part on the unexpected discovery that a number of astragaloside compounds enhance transportation of certain nutrients across a monolayer of the gut cells lining the gastrointestinal tract. See Examples 1-4 below.
- this invention provides a method for up-regulating the absorption of a nutrient with a astragaloside compound in a subject in need thereof.
- Table 1 below provides examples of the particular types of subjects who need enhanced absorption of particular nutrients:
- the astragaloside compounds may be formulated into tablets, pills, capsules, liquid formulations and powder to be orally administered to the individual with nutrient absorption problem or mal-absorption syndrome, which is an alteration in the ability of the intestine to absorb nutrients adequately into the bloodstream.
- one or more of the astragaloside compounds may be dissolved in any solvent, preferably in a co-solvent, to produce a liquid formulation of the astragaloside compounds (such as, 10 mg of any of the astragaloside compounds may be dissolved in one mL of Transcutol® P [2-(2-ethoxyethoxy)ethanol]).
- the astragaloside compounds may be optionally mixed with other nutrient factors, additives, stabilizing agents, carriers, binders and fillers to produce dietary supplements, beverages, food, and animal feeds for a subject in need of enhanced nutrient absorption. It may be apparent to one skilled in the art in view of the present disclosure to administer the astragaloside compounds in combination or in a cocktail manner with other ginsenosides and astragalosides to provide a synergistic or accumulative effect on the nutrient absorption.
- the astragaloside compounds may be prepared by any standard methodology or known methods or knowledge in the art.
- the isolated astragaloside compounds e.g., from Astragalus membranaceus var. mongholicus
- the isolated astragaloside compounds may be isolated by other available extraction and isolation methods known to those skilled in the art.
- the isolated astragaloside compounds may also be enriched from other Chinese herbal plants or vegetation to provide the same regulatory effect on nutrient absorption function.
- the astragaloside compounds may be obtained by a method comprising the steps of grinding the root of Astragalus membranaceus var. mongholicus and extracting with alcohol to produce an alcohol extract.
- the alcohol extract of Astragalus membranaceus var. mongholicus may be separated and purified to give seven known cycloartane compounds including astragaloside I (hereinafter “AS1”) of Formula I:
- AS2 astragaloside II
- AS3 astragaloside III
- AS4 astragaloside IV of Formula IV:
- IsoAS1 isoastragaloside I (hereinafter as IsoAS1) of Formula V:
- AS6 astragaloside VI
- IsoAS2 isoastragaloside II
- cycloartane compounds may be separated and purified with silica gel and reversed phase chromatography.
- AS4 may further be hydrolyzed using naringinase to obtain a metabolite, such as cycloastragenol 6-O- ⁇ -D-gluco-pyranose (hereinafter “AA”) of Formula VIII:
- the absorption of glucose is enhanced by facilitating the transportation of glucose across the gut cells of the subject in need of the absorption enhancement with administration of one or more of the above-described astragaloside compounds at a concentration of about 0.001 ⁇ M to about 5 ⁇ M; wherein the astragaloside compound is AS1 of Formula I, AS4 of Formula IV, AS6 of Formula VI, IsoAS2 of Formula VII, or AA of Formula VIII.
- the absorption of arginine is enhanced by facilitating the transportation of arginine across the gut cells of the subject in need of the absorption enhancement with administration of one or more of the above-described astragaloside compounds at a concentration of about 0.001 ⁇ M to about 5 ⁇ M; wherein the astragaloside compound is AS1 of Formula I, AS2 of Formula II, AS3 of Formula III, AS4 of Formula IV, IsoAS1 of Formula V, AS6 of Formula VI, IsoAS2 of Formula VII, or AA of Formula VIII.
- the absorption of tryptophan is enhanced by facilitating transportation of tryptophan across the gut cells of the subject in need of the absorption enhancement with administration of one or more of the above-described astragaloside compounds at a concentration of about 0.001 to about 5 ⁇ M; wherein the astragaloside compound is AS1 of Formula I, AS2 of Formula II, AS3 of Formula III, AS4 of Formula IV, IsoAS1 of Formula V, AS6 of Formula VI, IsoAS2 of Formula VII, or AA of Formula VIII.
- the absorption of folate is enhanced by facilitating transportation of folate across the gut cells of the subject in need of the absorption enhancement with administration of one or more of the above-described astragaloside compounds at a concentration of about 0.001 ⁇ M to about 5 ⁇ M; wherein the astragaloside compound is AS1 of Formula I, AS2 of Formula II, AS3 of Formula III, AS4 of Formula IV, IsoAS1 of Formula V, AS6 of Formula VI, IsoAS2 of Formula VII, or AA of Formula VIII.
- Caco-2 cells were grown on permeable filter as an experimental model.
- Caco2 cells originate from human colonic adenocarcinoma and spontaneously differentiate into an enterocyte-like phenotype after two weeks.
- the Caco-2 cell line derived from a human colorectal carcinoma, has been used as an in vitro model system for studying drug absorption in gastrointestinal tract. These cells form monolayers with well-developed tight-junctions, and have been evaluated in details as an in vitro model to study both transcellular transport of nutrients and drugs in intestinal lumen.
- Caco-2 cells were obtained from the ATCC (American Type Culture Collection). The cells were maintained in Dulbecco's modified Eagle medium (DMEM) containing 4.5 g/L glucose and 25 mM Hepes, supplemented with 10% fetal calf serum, 100 U/mL penicillin G and 10 ⁇ g/L streptomycin. The medium was changed every second day. The cells were routinely checked for Mycoplasma in monthly intervals. Caco-2 cells were cultured on semi-permeable membranes to differentiate into a highly functionalized epithelial barrier with remarkable morphological and biochemical similarity to the small intestinal columnar epithelium. The Caco-2 cell monolayers could therefore be used to study the membrane transport properties of many compounds.
- DMEM Dulbecco's modified Eagle medium
- the culture dish was washed once with phosphate-buffered saline (PBS) followed by adding trypsine-EDTA for 10 minutes.
- PBS phosphate-buffered saline
- the trypsinized cells were separated and filtered into single cells using a 35- ⁇ m strainer cap (Falcon 2235 ) before being seeded for further experiments.
- cell viability assay was carried out using culture medium supplemented with 1% and 10% FBS, respectively.
- the cells were seeded at a concentration of 5000 cells/well in a 96-well plate. To eliminate the boundary effect of the cell growth, the cells were only seeded in 60 wells of the middle area of the plate, whereas 36 wells at the surrounding area of the plate were filled only with 100 ⁇ L of PBS.
- the cells were incubated in medium containing the isolated astragalosides at various doses (0, 1, 10, 20 and 50 ⁇ M). After 3 days, the culture medium was replaced with fresh medium containing the same compounds and incubated for 2 more days before the cells were assayed for cell viability.
- the cell viability was determined by a Cell Counting Kit-8 (CCK-8, Dojindo Laboratories, Kumamoto, Japan) assay that is based on redox reaction of NADH in the living cells with cell proliferation reagent WST-8.
- WST-8 was reduced by dehydrogenases in electron transport chain (ETC) of mitochondria in the cells to give a yellow-colored formazan product, which was soluble in the tissue culture medium.
- ETC electron transport chain
- the amount of formazan dye generated by the activity of dehydrogenases in the cells was directly proportional to the number of the living cells. Therefore, a greater light absorbance detected by ELISA reader at wavelength of 450 nm indicated presence of a larger number of the living cells.
- the CCK-8 assay was carried out by adding 10 ⁇ L of the CCK-8 reagent in each well of 96-format plate. The plate was then covered with aluminum foil and further incubated for two hours before measuring for absorbance at wavelengths of 450 nm by using an ELISA reader.
- Caco-2 cells (5 ⁇ 10 4 ) were seeded in a 48-well plate and maintained in culture medium (DMEM with 10% FBS, 1% nonessential amino acids, L-glutamine, penicillin G (100 U/mL), streptomycin (10 ⁇ g/mL), and amphotericin B (2.5 ⁇ g/mL) in a 37° C. incubator for 10 days for the cells to differentiate.
- the culture medium was changed once every two days.
- the cells were then washed with PBS before replenishing with the culture medium containing 5% FBS and various astragalosides at the indicated concentrations (0.01, 0.1 and 1 ⁇ M) for 48 hours.
- the Caco2 cells were washed out of remaining glucose with PBS and replaced in the glucose buffer (80 mM NaCl, 100 mM mannitol, 20 mM Tris-HCl, pH 7.4, 3 mM K 2 HPO 4 , 1 mM CaCl 2 , 1 mg/mL BSA) for 1 hour.
- Glucose uptake was initiated by replacing the glucose buffer with 0.2 ml of glucose buffer containing 2 ⁇ Ci/mL of 14 C-glucose and unlabeled cold glucose to give a final glucose concentration of 25 mM.
- Glucose uptake was stopped by removing the glucose buffer and washing with PBS at designated time intervals.
- the cells were lysed in 0.2 mL of 0.2 N NaOH, and 20 ⁇ L of the cell lysate were transferred to the filter-bottomed UniFilter plates (Perkin-Elmer, Wellesley, Mass., USA) and dried in a vacuum oven at 37° C. The bottom of the UniFilter plate was sealed and 250 ⁇ L of the counting solution were added into each well. Adhesive plate sealers were used in place of the lids and radioactivity of each sample was counted using the microplate liquid scintillation counter (TopCount, Packard NXT, Packard BioScience Company, Meriden, Conn., USA).
- the amount of glucose accumulated in the cells was calculated and normalized to protein concentration, and uptake rate was expressed as nanomoles of glucose per minutes per milligram of cell protein (nmol/min/mg). Protein concentration was determined by a standard Bicinchoninic acid (BCA) protein assay. Nonspecific glucose uptake was measured by adding 2 ⁇ Ci of L-[ 14 C]-glucose and subtracting from each determination to obtain specific glucose uptake.
- BCA Bicinchoninic acid
- the isolated astragaloside did not generally affect growth of Caco2 cells at a concentration range from 1 to 50 ⁇ M except when the AS1 of Formula I at a concentration of 10 ⁇ M was administered to Caco2 cells. Therefore, the isolated astragaloside was administered in the subsequent glucose uptake test or folate uptake test at a concentration range that did not cause cell toxicity. Preferably, the isolated astragaloside was administered at a concentration range of about 0.001 ⁇ M to about 1 ⁇ M.
- both sides of the transwells were washed with arginine incubation buffer consisting of: 137 mM NaCl, 10 mM Hepes, 0.3 mM NaH 2 PO 4 , 0.3 mM K 2 HPO 4 , 5.4 mM KCl, 2.8 mM CaCl 2 , 1 mM MgSO 4 , 10 mM glucose, adjusted to pH 7.4. Then, the cell layer was preincubated in the incubation buffer at 37° C. for 1 h. The volume of incubation buffer was 0.2 mL and 0.9 mL in the apical and basolateral chambers, respectively.
- the cells were replaced with fresh incubation medium in both chambers prior to the transport experiment.
- the transport experiment was initiated by replacing the incubation solution on the apical side with solution containing 10 mM of L-arginine in which 0.125 ⁇ Ci/mL of L-[ 3 H]-arginine was included.
- 10 ⁇ L-solution samples were removed from the basolateral side and radioactivity of each sample was counted using a microplate liquid scintillation counter (TopCount, Packard NXT).
- 10 ⁇ L buffer was supplemented to keep the volume constant.
- the arginine transport rate was increased when the Caco2 cell monolayer was treated with AS3 of Formula III, AS4 of Formula IV, AS6 of Formula VI, AA of Formula VIII, IsoAS1 of Formula V or IsoAS2 of Formula VII, respectively, at a concentration from 0.01 ⁇ M to 1 ⁇ M.
- the regulatory effects of the isolated astragalosides on the arginine transport in Caco2 cells are listed in Table 3 below, wherein the arrows that point up represent the enhancing effect on the arginine transport.
- the tryptophan transport rate was increased when the Caco2 cell monolayer was treated with AS2 of Formula II, AS3 of Formula III, AS4 of Formula IV, AS6 of Formula VI, AA of Formula VIII, IsoAS1 of Formula V or IsoAS2 of Formula VII respectively at a concentration from 0.01 ⁇ M to 1 mM, and with AS1 of Formula I at a concentration from 0.01 ⁇ M to 0.1 mM.
- the regulatory effects of the isolated astragalosides on the tryptophan transport in Caco2 cells are listed in Table 4 below, wherein the arrows that point up represent the enhancing effect on the tryptophan transport.
- the Caco2 cells were subjected to folate uptake test in a manner similar to that described in the glucose uptake assay in Example 1 above.
- the Caco2 cells were pretreated with the culture medium containing 5% FBS and isolated astragalosides at a concentration of 0.1 ⁇ M for 2 days before the cells were cultured in a folate uptake buffer (Hank's balanced salt solution, supplemented with 0.14 g/L CaCl 2 , 0.1 g/L MgCl 2 , and 0.1 g/L MgSO 4 , pH 6.0) for 1 hour.
- a folate uptake buffer Hort's balanced salt solution, supplemented with 0.14 g/L CaCl 2 , 0.1 g/L MgCl 2 , and 0.1 g/L MgSO 4 , pH 6.0
- the buffer was then aspirated, and uptake was initiated by adding 0.2 mL of fresh folate uptake buffer containing 2 ⁇ Ci/mL radioactive folate (3,5,7,9- 3 H-folic acid, 25 mCi/mmol, ARC) and cold, unlabeled folate giving a final folate concentration of 5 ⁇ M.
- the folate uptake was terminated by removing the uptake buffer at designated time intervals.
- the cells were then washed three times with ice-cold PBS and lysed by the addition of 0.2 mL of 0.2N NaOH, followed by incubation at 65° C. for 20 min.
- Intracellular uptake of 3 H-folate was determined by transferring 20 ⁇ L of the cell lysate to the filter-bottomed UniFilter plates (Perkin-Elmer) and counting as described previously in Example 1. The amount of folate accumulated in the cells was calculated and normalized to protein concentration, and uptake rate was expressed as picomoles of folate per minutes per milligram of cell protein (pmol/min/mg). Protein concentration was determined by a standard Bicinchoninic acid (BCA) protein assay as described above.
- BCA Bicinchoninic acid
- Caco2 cells treated with AS1 of Formula I at the concentration of 0.1 ⁇ M was found to exhibit an increased folate uptake from the control group having non-treated Caco2 cells.
- the regulatory effects of the isolated astragalosides on the folate uptake in Caco2 cells are listed in Table 5 below, wherein the arrows that point up represent the enhancing effect on folate uptake.
- the present invention is not limited as such.
- the gut cells and cells of gastrointestinal system should also be expected to benefit from the regulatory effect of the astragaloside compounds proposed in the present invention as long as these cells have similar nutrient transporting mechanisms.
- the astragaloside compounds described in the present invention may equivalently apply to regulate absorption of nutrients which include vitamins, amino acids, hormones, growth factors, and other elements important for cell metabolism.
- the nutrient absorption test and nutrient uptake test described in the embodiments may be implemented interchangeably for assessing and evaluating the regulatory effect of the isolated astragaloside on the nutrient absorption of the individual according to the present invention.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Natural Medicines & Medicinal Plants (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Pharmacology & Pharmacy (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Epidemiology (AREA)
- General Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Hematology (AREA)
- Obesity (AREA)
- Alternative & Traditional Medicine (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Medical Informatics (AREA)
- Microbiology (AREA)
- Mycology (AREA)
- Diabetes (AREA)
- Molecular Biology (AREA)
- Nutrition Science (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
The present application relates to a method for enhancing absorption of a nutrient in a subject in need thereof with an effective amount of an isolated astragaloside compound.
Description
- This application is a continuation-in-part of U.S. patent application Ser. No. 11/426,029, filed Jun. 23, 2006, which claims the benefit of the priority pursuant to 35 U.S.C. §119(e) of U.S. Provisional Patent Application No. 60/694,097, filed Jun. 23, 2005. The contents of the prior applications are incorporated herein by their entireties.
- From the study of the human digestive system, it has been found that a huge variety of nutritional substances are obtained by breaking down and digesting the food in the gastrointestinal tract. The gastrointestinal tract is an important route by which the food is digested and absorbed. With regard to absorption, the nutritional substances, such as glucose, amino acids, vitamins and other smaller molecules are absorbed along the entire tract, either by diffusion or by specialized transport processes. Instead of moving freely across the intestinal membrane to the blood stream or lymph, most of these nutritional substances are transported by a tightly regulated mechanism. Based on current understanding in cell biology and physiology, the nutritional substances are transported across the cells with specific transport proteins and channels anchored on the cell membrane.
- In the example of glucose transportation, almost all of the cells have a carrier-mediated mechanism for the transport of glucose from blood. For most cells, this transport occurs by facilitated diffusion using one or more of the glucose transporters (GLUT) in a family of facilitated glucose transporters. In these cases, net glucose transport occurs as a result of an inwardly directed chemical gradient for glucose. In a few cell types (e.g. those of intestinal mucosa and renal proximal tubule), uptake of glucose from an extracellular solution can occur against a gradient of glucose in a so-called active transport mechanism, thereby permitting net absorption of glucose from a tissue compartment whose glucose concentration may be lower than that of the blood. There are two ways in which a flow of energy can be coupled to transporters. The primary active transport requires energy be provided by adenosine triphophatase (ATPase). The secondary active transport provides energy from the flow of ions from an area of higher concentration to one of lower concentration.
- According to the secondary active transport model described above, Na+ binds to transport protein on the luminal side of the cell causing conformational change of the transport protein, which opens the binding site for glucose. Then, glucose binds to the transport protein. The transport protein that is bound with both Na+ and glucose is subjected to further conformational change to allow entry of glucose and Na+ into the cells. This active transport of glucose involves a direct physical coupling of flows of Na+ and glucose, with the energy of the process being derived from the inwardly directed gradient for Na+. Since the transport event includes a net movement of charge (the cationic Na+ ion with the non-electrolyte glucose), the driving force for this uptake includes both the chemical gradient for Na+ and the potential difference across the membrane. As the glucose gradually accumulates in the cell, it is subsequently transported out to the blood vessel via a glucose concentration gradient by facilitated diffusion. Similarly, other nutritional substances may be absorbed with the transport mechanism described above.
- Astragalus root (Radix Astragali) has been used as a traditional Chinese medicine that mainly serves to invigorate the function of the spleen and increase stamina and endurance. Astragalus root (Radix Astragali) was found to enhance the immune system and help the human body resist virus infections, particularly in the lungs, by increasing production of interferon, an immune factor that inhibits viral growth. Astragalus root has been used as an adjuvant therapy in the treatment of colds and influenza. Radix Astragali was also reported to have effects on cardiovascular activity. Alcohol extracts of Radix Astragali enhanced both the contractility and contraction amplitude of isolated frog or toad hearts. Furthermore, astragalosides isolated from Radix Astragali have been reported to exert a positive inotropic effect on isolated rat hearts.
- However, Astragalus membranaceus var. mongholicus has not been implied in regulating nutrient absorption and transportation. None of the study or research has focused on regulating the nutrient absorption using saponin compounds purified from Chinese herbal medicines, particularly Astragalus membranaceus var. mongholicus.
- The present invention provides a method for enhancing the absorption of a nutrient, such as glucose, an amino acid (e.g. arginine or tryptophan), and a vitamin (e.g., folate), in a subject in need thereof. This method includes the steps of identifying a subject who needs up-regulation of nutrient absorption and administering to the subject an effective amount of an isolated astragaloside compound (e.g., from Astragalus membranaceus var. mongholicus). “An effective amount” as used herein refers to the amount of each active agent required to confer therapeutic effect on the subject, either alone or in combination with one or more other active agents. Effective amounts vary, as recognized by those skilled in the art, depending on route of administration, excipient usage, and co-usage with other active agents. Subjects in need of this regulation include elderlies, juveniles, pregnant or menopausal women, post-surgery patients, and patients suffering from long-term pressure, abnormal metabolism (e.g., type II diabetics), a weakened immune system (e.g., leukemia patients, HIV carriers, and organ transplantation recipients), or other diseases/disorders listed in Table 1 below.
- The astragaloside compound, preferably isolated, is an cycloartane compound of Formula
- wherein R1 is selected from the group consisting of H, OH, O-acetyl, O-xylopyranosyl, O-(2-acetylxylopyranosyl), O-(3-acetylxylopyranosyl), O-(2,3-diacetylxylopyranosyl), O-(2,4-diacetylxylopyranosyl), O-xylopyranosyl-(1-2)-β-D-glucopyranosyl and O-xylopyranosyl-(1-2)-α-arabinopyranosyl; R2 is selected from the group consisting of H, OH, O-acetyl and O-glucopyranosyl, O-xylopyranosyl; R3 is selected from the group consisting of H, OH and O-acetyl; and R4 is selected from the group consisting of
- The term “isolated astragaloside compound” used herein refers to an astragaloside compound prepared by a synthetic method or enriched from a natural source (e.g., Astragalus membranaceus var. mongholicus). For example, an isolated astragaloside compound is a preparation that contains at least 40% (e.g., at least 95%) of the astragaloside compound by dry weight. Purity of an isolated compound can be measured by, e.g., column chromatography, mass spectrometry, high performance liquid chromatography (HPLC), NMR, or any other suitable methods.
- Preferably, the astragaloside compound used in the method of this invention is selected from the group consisting of astragaloside I of Formula I:
- astragaloside II of Formula II:
- astragaloside III of Formula III:
- astragaloside IV of Formula IV:
- isoastragaloside I of Formula V:
- astragaloside VI of Formula VI:
- isoastragaloside II of Formula VII:
- and cycloastragenol-6-O-β-D-glucopyranose of Formula VIII:
- Additional features and advantages of the present invention will be set forth in part in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The features and advantages of the invention will be realized and attained by means of the elements and combinations as described.
- It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.
- The foregoing summary, as well as the following detailed description of the invention, will be better understood when read in conjunction with the appended drawings. For the purpose of illustrating the invention, there are shown in the drawings embodiments, which are presently preferred. It should be understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown.
- In the drawings:
-
FIG. 1 is a line graph showing the glucose uptake rates of the Caco2 cells treated with the isolated astragaloside AS4 of Formula IV of selected concentrations; -
FIG. 2 is a line graph showing the arginine absorption rates measured in the Sink-transport across to basolateral chambers when the Caco2 monolayers were treated with the isolated astragaloside AS1 of Formula I of selected concentrations; -
FIG. 3 is a line graph showing the tryptophan absorption rates measured in the Sink-transport across to basolateral chambers when the Caco2 monolayers were treated with the isolated astragaloside AS1 of Formula I of selected concentrations; -
FIG. 4 is a line graph showing the folate uptake rates of the Caco2 cells treated with the isolated astragaloside AS1 of Formula I of a selected concentration. - To better understand the present invention, the terms used herein are explained in further detail. An astragaloside is defined as a triterpene saponin compound extracted from Radix Astragali, the dried root of Astragalus membranaceus (Fisch) Bunge and Astragalus mongholicus Bunge (Fabaceae).
- As used herein, the singular forms “a”, “an”, and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a compound” includes a plurality of such compounds.
- The term “absorption” as used herein refers to uptake of a nutrient via a passage through the intestinal epithelium and into the blood or lymph.
- The term “gut cells” as used herein generally include enterocytes, mucosal cell, and cells of intestinal epithelium responsible for nutrient absorption of the body.
- The term “subject” as used herein refers to any animal, preferably including humans, where absorption of nutrients occurs across gut cells in the subject's gastrointestinal tract.
- The present invention is based at least in part on the unexpected discovery that a number of astragaloside compounds enhance transportation of certain nutrients across a monolayer of the gut cells lining the gastrointestinal tract. See Examples 1-4 below. Thus, this invention provides a method for up-regulating the absorption of a nutrient with a astragaloside compound in a subject in need thereof. Table 1 below provides examples of the particular types of subjects who need enhanced absorption of particular nutrients:
-
TABLE 1 Subjects Who Need Up-Regulation of Absorption of Certain Nutrients Nutrient Subject In Need Glucose Elderlies, athletes, alcoholics, juveniles, post-surgery patients, malnutrition patients, and patients having digestive tract disorders Arginine Juveniles, athletes, over-weight patients, patients suffering from cardiovascular disease, a weakened immune system, physical injury (e.g., burn trauma), and erectile dysfunction Tryptophan Over-weight patients, patients suffering from insomnia, a weakened immune system, and long-term pressure Folate Elderlies, pregnant women, nursing mothers, and patients suffering from insomnia, depression, cardiovascular disease, or long-term pressure - The astragaloside compounds may be formulated into tablets, pills, capsules, liquid formulations and powder to be orally administered to the individual with nutrient absorption problem or mal-absorption syndrome, which is an alteration in the ability of the intestine to absorb nutrients adequately into the bloodstream. In one embodiment of the preparation of the liquid formulation, one or more of the astragaloside compounds may be dissolved in any solvent, preferably in a co-solvent, to produce a liquid formulation of the astragaloside compounds (such as, 10 mg of any of the astragaloside compounds may be dissolved in one mL of Transcutol® P [2-(2-ethoxyethoxy)ethanol]). Also, the astragaloside compounds may be optionally mixed with other nutrient factors, additives, stabilizing agents, carriers, binders and fillers to produce dietary supplements, beverages, food, and animal feeds for a subject in need of enhanced nutrient absorption. It may be apparent to one skilled in the art in view of the present disclosure to administer the astragaloside compounds in combination or in a cocktail manner with other ginsenosides and astragalosides to provide a synergistic or accumulative effect on the nutrient absorption.
- The astragaloside compounds may be prepared by any standard methodology or known methods or knowledge in the art. According to the invention, the isolated astragaloside compounds, e.g., from Astragalus membranaceus var. mongholicus, include the astragalosides. They may be isolated by other available extraction and isolation methods known to those skilled in the art. For example, the isolated astragaloside compounds may also be enriched from other Chinese herbal plants or vegetation to provide the same regulatory effect on nutrient absorption function. According to an embodiment of the invention, the astragaloside compounds may be obtained by a method comprising the steps of grinding the root of Astragalus membranaceus var. mongholicus and extracting with alcohol to produce an alcohol extract. The alcohol extract of Astragalus membranaceus var. mongholicus may be separated and purified to give seven known cycloartane compounds including astragaloside I (hereinafter “AS1”) of Formula I:
- astragaloside II (hereinafter “AS2”) of Formula II:
- astragaloside III (hereinafter “AS3”) of Formula III:
- astragaloside IV (hereinafter “AS4”) of Formula IV:
- isoastragaloside I (hereinafter as IsoAS1) of Formula V:
- astragaloside VI (hereinafter “AS6”) of Formula VI:
- and isoastragaloside II (hereinafter as IsoAS2) of Formula VII:
- The cycloartane compounds may be separated and purified with silica gel and reversed phase chromatography. AS4 may further be hydrolyzed using naringinase to obtain a metabolite, such as cycloastragenol 6-O-β-D-gluco-pyranose (hereinafter “AA”) of Formula VIII:
- In one embodiment, the absorption of glucose is enhanced by facilitating the transportation of glucose across the gut cells of the subject in need of the absorption enhancement with administration of one or more of the above-described astragaloside compounds at a concentration of about 0.001 μM to about 5 μM; wherein the astragaloside compound is AS1 of Formula I, AS4 of Formula IV, AS6 of Formula VI, IsoAS2 of Formula VII, or AA of Formula VIII.
- In another embodiment, the absorption of arginine is enhanced by facilitating the transportation of arginine across the gut cells of the subject in need of the absorption enhancement with administration of one or more of the above-described astragaloside compounds at a concentration of about 0.001 μM to about 5 μM; wherein the astragaloside compound is AS1 of Formula I, AS2 of Formula II, AS3 of Formula III, AS4 of Formula IV, IsoAS1 of Formula V, AS6 of Formula VI, IsoAS2 of Formula VII, or AA of Formula VIII.
- In still another embodiment, the absorption of tryptophan is enhanced by facilitating transportation of tryptophan across the gut cells of the subject in need of the absorption enhancement with administration of one or more of the above-described astragaloside compounds at a concentration of about 0.001 to about 5 μM; wherein the astragaloside compound is AS1 of Formula I, AS2 of Formula II, AS3 of Formula III, AS4 of Formula IV, IsoAS1 of Formula V, AS6 of Formula VI, IsoAS2 of Formula VII, or AA of Formula VIII.
- In yet another embodiment, the absorption of folate is enhanced by facilitating transportation of folate across the gut cells of the subject in need of the absorption enhancement with administration of one or more of the above-described astragaloside compounds at a concentration of about 0.001 μM to about 5 μM; wherein the astragaloside compound is AS1 of Formula I, AS2 of Formula II, AS3 of Formula III, AS4 of Formula IV, IsoAS1 of Formula V, AS6 of Formula VI, IsoAS2 of Formula VII, or AA of Formula VIII.
- The present invention is more specifically explained by the following examples. However, it should be noted that the present invention is not limited to these examples in any manner.
- To evaluate the effect of the isolated astragaloside compound on the uptake of nutrient substances across the intestinal lumen, Caco-2 cells were grown on permeable filter as an experimental model. Caco2 cells originate from human colonic adenocarcinoma and spontaneously differentiate into an enterocyte-like phenotype after two weeks. The Caco-2 cell line, derived from a human colorectal carcinoma, has been used as an in vitro model system for studying drug absorption in gastrointestinal tract. These cells form monolayers with well-developed tight-junctions, and have been evaluated in details as an in vitro model to study both transcellular transport of nutrients and drugs in intestinal lumen.
- Caco-2 cells were obtained from the ATCC (American Type Culture Collection). The cells were maintained in Dulbecco's modified Eagle medium (DMEM) containing 4.5 g/L glucose and 25 mM Hepes, supplemented with 10% fetal calf serum, 100 U/mL penicillin G and 10 μg/L streptomycin. The medium was changed every second day. The cells were routinely checked for Mycoplasma in monthly intervals. Caco-2 cells were cultured on semi-permeable membranes to differentiate into a highly functionalized epithelial barrier with remarkable morphological and biochemical similarity to the small intestinal columnar epithelium. The Caco-2 cell monolayers could therefore be used to study the membrane transport properties of many compounds. To trypsinize the cells, the culture dish was washed once with phosphate-buffered saline (PBS) followed by adding trypsine-EDTA for 10 minutes. The trypsinized cells were separated and filtered into single cells using a 35-μm strainer cap (Falcon 2235) before being seeded for further experiments.
- To investigate whether the isolated astragalosides were toxic to the Caco2 cells, cell viability assay was carried out using culture medium supplemented with 1% and 10% FBS, respectively. The cells were seeded at a concentration of 5000 cells/well in a 96-well plate. To eliminate the boundary effect of the cell growth, the cells were only seeded in 60 wells of the middle area of the plate, whereas 36 wells at the surrounding area of the plate were filled only with 100 μL of PBS. Once the cells were attached to the plate, the cells were incubated in medium containing the isolated astragalosides at various doses (0, 1, 10, 20 and 50 μM). After 3 days, the culture medium was replaced with fresh medium containing the same compounds and incubated for 2 more days before the cells were assayed for cell viability.
- The cell viability was determined by a Cell Counting Kit-8 (CCK-8, Dojindo Laboratories, Kumamoto, Japan) assay that is based on redox reaction of NADH in the living cells with cell proliferation reagent WST-8. WST-8 was reduced by dehydrogenases in electron transport chain (ETC) of mitochondria in the cells to give a yellow-colored formazan product, which was soluble in the tissue culture medium. The amount of formazan dye generated by the activity of dehydrogenases in the cells was directly proportional to the number of the living cells. Therefore, a greater light absorbance detected by ELISA reader at wavelength of 450 nm indicated presence of a larger number of the living cells.
- The CCK-8 assay was carried out by adding 10 μL of the CCK-8 reagent in each well of 96-format plate. The plate was then covered with aluminum foil and further incubated for two hours before measuring for absorbance at wavelengths of 450 nm by using an ELISA reader.
- Caco-2 cells (5×104) were seeded in a 48-well plate and maintained in culture medium (DMEM with 10% FBS, 1% nonessential amino acids, L-glutamine, penicillin G (100 U/mL), streptomycin (10 μg/mL), and amphotericin B (2.5 μg/mL) in a 37° C. incubator for 10 days for the cells to differentiate. The culture medium was changed once every two days. The cells were then washed with PBS before replenishing with the culture medium containing 5% FBS and various astragalosides at the indicated concentrations (0.01, 0.1 and 1 μM) for 48 hours. The Caco2 cells were washed out of remaining glucose with PBS and replaced in the glucose buffer (80 mM NaCl, 100 mM mannitol, 20 mM Tris-HCl, pH 7.4, 3 mM K2HPO4, 1 mM CaCl2, 1 mg/mL BSA) for 1 hour. Glucose uptake was initiated by replacing the glucose buffer with 0.2 ml of glucose buffer containing 2 μCi/mL of 14C-glucose and unlabeled cold glucose to give a final glucose concentration of 25 mM. Glucose uptake was stopped by removing the glucose buffer and washing with PBS at designated time intervals. The cells were lysed in 0.2 mL of 0.2 N NaOH, and 20 μL of the cell lysate were transferred to the filter-bottomed UniFilter plates (Perkin-Elmer, Wellesley, Mass., USA) and dried in a vacuum oven at 37° C. The bottom of the UniFilter plate was sealed and 250 μL of the counting solution were added into each well. Adhesive plate sealers were used in place of the lids and radioactivity of each sample was counted using the microplate liquid scintillation counter (TopCount, Packard NXT, Packard BioScience Company, Meriden, Conn., USA). The amount of glucose accumulated in the cells was calculated and normalized to protein concentration, and uptake rate was expressed as nanomoles of glucose per minutes per milligram of cell protein (nmol/min/mg). Protein concentration was determined by a standard Bicinchoninic acid (BCA) protein assay. Nonspecific glucose uptake was measured by adding 2 μCi of L-[14C]-glucose and subtracting from each determination to obtain specific glucose uptake.
- In the cell viability assay, the isolated astragaloside did not generally affect growth of Caco2 cells at a concentration range from 1 to 50 μM except when the AS1 of Formula I at a concentration of 10 μM was administered to Caco2 cells. Therefore, the isolated astragaloside was administered in the subsequent glucose uptake test or folate uptake test at a concentration range that did not cause cell toxicity. Preferably, the isolated astragaloside was administered at a concentration range of about 0.001 μM to about 1 μM.
- From the glucose uptake assay shown in Table 2, it was found that isolated astragalosides, such as AS1 of Formula I, AS4 of Formula IV, AS6 of Formula VI, AA of Formula VIII, and IsoAS2 of Formula VII had regulatory effects on the glucose uptake of the Caco2 cells. The amount of glucose uptake was determined and expressed as “nmoles for each mg of cell protein.” As shown in
FIG. 1 , the Caco2 cells treated with AS4 of Formula IV showed a much higher glucose uptake rate than the control group. The regulatory effects of the isolated astragalosides on the glucose transport in Caco2 cells are listed in Table 2 below, wherein the arrows that point up represent the enhancing effect on the glucose uptake. -
TABLE 2 Regulatory effects of astragalosides on glucose uptake Uptake rate Compound (μM) (nmol/mg/min) Percentage (%) * Control 6.3720 ± 1.9290 100 — AS1 1 6.2780 ± 1.9930 98.52 0.1 7.8260 ± 1.7510 122.82 ↑ 0.01 9.3510 ± 1.1370 146.75 ↑ AS4 1 9.0020 ± 1.8300 141.27 ↑ 0.1 10.460 ± 2.6690 164.16 ↑ 0.01 11.670 ± 2.5800 183.15 ↑ AS6 1 7.8050 ± 1.1830 122.49 ↑ 0.1 7.0070 ± 1.9470 109.97 ↑ 0.01 7.6360 ± 1.7330 119.84 ↑ AA 1 9.2830 ± 2.1150 145.68 ↑ 0.1 9.3460 ± 2.3210 146.67 ↑ 0.01 11.450 ± 3.2760 179.69 ↑ IsoAS2 1 6.1520 ± 2.4610 96.55 0.1 6.8210 ± 1.6630 107.05 ↑ 0.01 7.3720 ± 2.5700 115.69 ↑ - It is concluded that the absorption of glucose can be enhanced by the astragaloside isolated from Astragalus membranaceus var. mongholicus, including AS1 of Formula I, AS4 of Formula IV, AS6 of Formula VI, AA of Formula VIII or IsoAS2 of Formula VII.
- In measuring transport of arginine across the Caco-2 cell monolayer, both sides of the transwells were washed with arginine incubation buffer consisting of: 137 mM NaCl, 10 mM Hepes, 0.3 mM NaH2PO4, 0.3 mM K2HPO4, 5.4 mM KCl, 2.8 mM CaCl2, 1 mM MgSO4, 10 mM glucose, adjusted to pH 7.4. Then, the cell layer was preincubated in the incubation buffer at 37° C. for 1 h. The volume of incubation buffer was 0.2 mL and 0.9 mL in the apical and basolateral chambers, respectively. The cells were replaced with fresh incubation medium in both chambers prior to the transport experiment. The transport experiment was initiated by replacing the incubation solution on the apical side with solution containing 10 mM of L-arginine in which 0.125 μCi/mL of L-[3H]-arginine was included. At designated time intervals, 10 μL-solution samples were removed from the basolateral side and radioactivity of each sample was counted using a microplate liquid scintillation counter (TopCount, Packard NXT). During the experiment, when a 10 μL-solution sample was removed from the basolateral side every time, 10 μL buffer was supplemented to keep the volume constant. The uptake of [3H]-mannitol was used to correct for nonspecific transport of molecules across the monolayer membrane. Results were expressed as the nanomoles of arginine transport across the Caco-2 cell monolayers with respect to time in minutes (nmol/min).
- From the arginine absorption assay results shown in Table 3, it was found that isolated astragalosides, such as AS1 of Formula I, AS2 of Formula II, AS3 of Formula III, AS4 of Formula IV, AS6 of Formula VI, AA of Formula VIII, IsoAS1 of Formula V and IsoAS2 of Formula VII had regulatory effects on the arginine transport across the Caco2 cell monolayer. Referring to
FIG. 2 and Table 3, the arginine transport rate was increased when the Caco2 cell monolayer was treated with AS1 of Formula I or AS2 of Formula II at a concentration from 0.001 μM to 0.1 μM. The arginine transport rate was increased when the Caco2 cell monolayer was treated with AS3 of Formula III, AS4 of Formula IV, AS6 of Formula VI, AA of Formula VIII, IsoAS1 of Formula V or IsoAS2 of Formula VII, respectively, at a concentration from 0.01 μM to 1 μM. The regulatory effects of the isolated astragalosides on the arginine transport in Caco2 cells are listed in Table 3 below, wherein the arrows that point up represent the enhancing effect on the arginine transport. -
TABLE 3 Regulatory effects of isolated astragalosides on Arginine transport Compound (μM) Transport rate (nmol/min) Percentage (%) * Control 10.6855 ± 0.2523 100 — AS1 0.1 15.7300 ± 1.1250 147.21 ↑ 0.01 16.2324 ± 0.7215 151.91 ↑ 0.001 14.2554 ± 0.5851 133.37 ↑ AS2 0.1 17.2771 ± 1.6170 161.69 ↑ 0.01 16.2358 ± 1.6190 151.94 ↑ 0.001 14.6355 ± 1.2910 136.97 ↑ AS3 1 15.8341 ± 1.0000 148.18 ↑ 0.1 13.2858 ± 1.4110 124.33 ↑ 0.01 13.0084 ± 1.0510 121.74 ↑ AS4 1 17.2241 ± 0.3759 161.19 ↑ 0.1 18.4575 ± 0.5955 172.73 ↑ 0.01 16.7245 ± 0.2890 156.52 ↑ AS6 1 13.5942 ± 1.2760 127.22 ↑ 0.1 14.9986 ± 1.3200 140.36 ↑ 0.01 13.9283 ± 1.7330 130.35 ↑ AA 1 17.3164 ± 1.6150 162.06 ↑ 0.1 18.2169 ± 1.8700 170.48 ↑ 0.01 21.3347 ± 1.7800 199.66 ↑ IsoAS1 1 14.4734 ± 1.1350 135.41 ↑ 0.1 21.3107 ± 1.5130 199.44 ↑ 0.01 14.4776 ± 0.5519 135.49 ↑ IsoAS2 1 12.6518 ± 0.3680 118.40 ↑ 0.1 14.1059 ± 0.1815 132.01 ↑ 0.01 14.7577 ± 0.2837 138.11 ↑ - It is concluded that the absorption of arginine can be enhanced with the administration of astragalosides isolated from Astragalus membranaceus var. mongholicus, including AS1 of Formula I, AS2 of Formula II, AS3 of Formula III, AS4 of Formula IV, AS6 of Formula VI, AA of Formula VIII, IsoAS1 of Formula V or IsoAS2 of Formula VII.
- The experimental procedures similar to those in Example 2 were used for measuring the uptake of tryptophan molecules across the Caco-2 membrane, except using a tryptophan incubation buffer consisting of 137 mM choline chloride, 10 mM Hepes, 0.6 mM KH2PO4, 5.4 mM KCl, 2.8 mM CaCl2, 1 mM MgSO4, and 10 mM glucose, and having its pH adjusted to 7.4. Results were expressed as the nanomoles of tryptophan transport across the Caco-2 cell monolayers with respect to time in minutes (nmol/min).
- From the tryptophan absorption assay results shown in Table 4, it was found that isolated astragalosides, such as AS1 of Formula I, AS2 of Formula II, AS3 of Formula III, AS4 of Formula IV, AS6 of Formula VI, AA of Formula VIII, IsoAS1 of Formula V and IsoAS2 of Formula VII had regulatory effects on the tryptophan transport across the Caco2 cell monolayer. As shown in
FIG. 3 and Table 4, the tryptophan transport rate was increased when the Caco2 cell monolayer was treated with AS2 of Formula II, AS3 of Formula III, AS4 of Formula IV, AS6 of Formula VI, AA of Formula VIII, IsoAS1 of Formula V or IsoAS2 of Formula VII respectively at a concentration from 0.01 μM to 1 mM, and with AS1 of Formula I at a concentration from 0.01 μM to 0.1 mM. The regulatory effects of the isolated astragalosides on the tryptophan transport in Caco2 cells are listed in Table 4 below, wherein the arrows that point up represent the enhancing effect on the tryptophan transport. -
TABLE 4 Regulatory effects of isolated astragalosides on Tryptophan transport Compound (μM) Transport rate (nmol/min) Percentage (%) * Control 8.9420 ± 0.3670 100 — AS1 1 16.000 ± 1.3190 178.93 ↑ 0.1 23.130 ± 1.3120 258.67 ↑ 0.01 22.220 ± 0.8695 248.49 ↑ AS2 1 — — — 0.1 11.650 ± 0.5789 130.28 ↑ 0.01 10.290 ± 0.4115 115.07 ↑ AS3 1 24.200 ± 1.0260 270.63 ↑ 0.1 13.590 ± 1.0080 151.98 ↑ 0.01 14.290 ± 1.3910 159.81 ↑ AS4 1 9.6640 ± 0.2770 108.07 ↑ 0.1 12.730 ± 0.4470 142.36 ↑ 0.01 10.130 ± 0.7025 113.29 ↑ AS6 1 15.490 ± 0.2161 173.23 ↑ 0.1 13.850 ± 0.6567 151.87 ↑ 0.01 15.510 ± 0.3688 173.45 ↑ AA 1 12.100 ± 0.5197 135.32 ↑ 0.1 14.000 ± 0.6445 156.56 ↑ 0.01 11.900 ± 0.6231 133.08 ↑ IsoAS1 1 10.600 ± 0.8058 118.54 ↑ 0.1 13.370 ± 0.3301 149.52 ↑ 0.01 10.370 ± 0.8808 115.97 ↑ IsoAS2 1 20.070 ± 0.1931 224.45 ↑ 0.1 13.060 ± 0.5530 146.05 ↑ 0.01 13.000 ± 0.5547 145.38 ↑ - It is concluded that the absorption of tryptophan may be enhanced with the administration of the astragaloside isolated from Astragalus membranaceus var. mongholicus, including AS1 of Formula I, AS2 of Formula II, AS3 of Formula III, AS4 of Formula IV, AS6 of Formula VI, AA of Formula VIII, IsoAS1 of Formula V or IsoAS2 of Formula VII.
- The Caco2 cells were subjected to folate uptake test in a manner similar to that described in the glucose uptake assay in Example 1 above. In the folate uptake test, the Caco2 cells were pretreated with the culture medium containing 5% FBS and isolated astragalosides at a concentration of 0.1 μM for 2 days before the cells were cultured in a folate uptake buffer (Hank's balanced salt solution, supplemented with 0.14 g/L CaCl2, 0.1 g/L MgCl2, and 0.1 g/L MgSO4, pH 6.0) for 1 hour. The buffer was then aspirated, and uptake was initiated by adding 0.2 mL of fresh folate uptake buffer containing 2 μCi/mL radioactive folate (3,5,7,9-3H-folic acid, 25 mCi/mmol, ARC) and cold, unlabeled folate giving a final folate concentration of 5 μM. The folate uptake was terminated by removing the uptake buffer at designated time intervals. The cells were then washed three times with ice-cold PBS and lysed by the addition of 0.2 mL of 0.2N NaOH, followed by incubation at 65° C. for 20 min. Intracellular uptake of 3H-folate was determined by transferring 20 μL of the cell lysate to the filter-bottomed UniFilter plates (Perkin-Elmer) and counting as described previously in Example 1. The amount of folate accumulated in the cells was calculated and normalized to protein concentration, and uptake rate was expressed as picomoles of folate per minutes per milligram of cell protein (pmol/min/mg). Protein concentration was determined by a standard Bicinchoninic acid (BCA) protein assay as described above.
- Referring to
FIG. 4 , Caco2 cells treated with AS1 of Formula I at the concentration of 0.1 μM was found to exhibit an increased folate uptake from the control group having non-treated Caco2 cells. The regulatory effects of the isolated astragalosides on the folate uptake in Caco2 cells are listed in Table 5 below, wherein the arrows that point up represent the enhancing effect on folate uptake. -
TABLE 5 Regulatory effects of isolated astragalosides on folate uptake Uptake rate (pmol/mg/min) Percentage ( % ) * Control 53.140 ± 3.5540 — 0.1 μM AS1 79.710 ± 3.0410 150.00 ↑ Control 54.220 ± 3.1730 — 0.1 μM AS2 69.970 ± 3.7720 129.05 ↑ Control 55.280 ± 0.8527 — 0.1 μM AS3 80.380 ± 6.2170 145.41 ↑ Control 56.030 ± 0.9678 — 0.1 μM AS4 75.710 ± 5.2390 135.12 ↑ Control 60.240 ± 6.6510 — 0.1 μM AS6 84.560 ± 4.7200 140.37 ↑ Control 53.010 ± 6.3290 — 0.1 μM AA 84.030 ± 4.9410 158.52 ↑ Control 50.720 ± 3.7550 — 0.1 μM 73.460 ± 3.6060 144.83 ↑ IsoAS1 Control 53.19 ± 1.98 — 0.1 μM 86.63 ± 2.82 162.87 ↑ IsoAS2 - It is concluded that the uptake of folate can be enhanced with the administration of the astragaloside isolated from Astragalus membranaceus var. mongholicus, including AS1 of Formula I, AS2 of Formula II, AS3 of Formula III, AS4 of Formula IV, AS6 of Formula VI, AA of Formula VIII, IsoAS1 of Formula V or IsoAS2 of Formula VII.
- Although the above examples described regulating nutrient absorption of the colon cancer cells, it should be noted that the present invention is not limited as such. The gut cells and cells of gastrointestinal system should also be expected to benefit from the regulatory effect of the astragaloside compounds proposed in the present invention as long as these cells have similar nutrient transporting mechanisms. Besides a regulatory role in glucose, arginine, tryptophan and folate absorption, the astragaloside compounds described in the present invention may equivalently apply to regulate absorption of nutrients which include vitamins, amino acids, hormones, growth factors, and other elements important for cell metabolism. Moreover, the nutrient absorption test and nutrient uptake test described in the embodiments may be implemented interchangeably for assessing and evaluating the regulatory effect of the isolated astragaloside on the nutrient absorption of the individual according to the present invention.
- It will be appreciated by those skilled in the art that changes could be made to the embodiments described above without departing from the broad inventive concept thereof. It is understood, therefore, that this invention is not limited to the particular embodiments disclosed, but it is intended to cover modifications within the spirit and scope of the present invention as defined by the appended claims.
Claims (4)
1-27. (canceled)
28. A method for enhancing absorption of folate in a subject in need thereof, comprising:
identifying a human subject in need of enhanced absorption of folate, and
administering to the subject an effective amount of an isolated astragaloside compound for facilitating transportation of folate across gut cells of the subject, wherein the subject is an elderly, a pregnant woman, a nursing mother, or a patient having insomnia, depression, a cardiovascular disease, or long-term pressure.
29. The method of claim 28 , wherein the astragaloside compound is an astragaloside compound of Formula (A):
wherein R1 is selected from the group consisting of H, OH, O-acetyl, O-xylopyranosyl, O-(2-acetylxylopyranosyl), O-(3-acetylxylopyranosyl), O-(2,3-diacetylxylopyranosyl), O-(2,4-diacetylxylopyranosyl), O-xylopyranosyl-(1-2)-β-D-glucopyranosyl, and O-xylopyranosyl-(1-2)-α-arabinopyranosyl; R2 is selected from the group consisting of H, OH, O-acetyl, O-glucopyranosyl, and O-xylopyranosyl; R3 is selected from the group consisting of H, OH, and O-acetyl; and R4 is selected from the group consisting of
30. The method of claim 29 , wherein the astragaloside compound is selected from the group consisting of astragaloside I of Formula I:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/444,765 US20120196816A1 (en) | 2005-06-23 | 2012-04-11 | Method for enhancing nutrient absorption with astragalosides |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US69409705P | 2005-06-23 | 2005-06-23 | |
US11/426,029 US20060292251A1 (en) | 2005-06-23 | 2006-06-23 | Method for enhancing nutrient absorption with astragalosides |
US12/424,193 US8197860B2 (en) | 2005-06-23 | 2009-04-15 | Method for enhancing nutrient absorption with astragalosides |
US13/444,765 US20120196816A1 (en) | 2005-06-23 | 2012-04-11 | Method for enhancing nutrient absorption with astragalosides |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/424,193 Division US8197860B2 (en) | 2005-06-23 | 2009-04-15 | Method for enhancing nutrient absorption with astragalosides |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120196816A1 true US20120196816A1 (en) | 2012-08-02 |
Family
ID=42109154
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/424,193 Active 2026-08-31 US8197860B2 (en) | 2005-06-23 | 2009-04-15 | Method for enhancing nutrient absorption with astragalosides |
US13/444,765 Abandoned US20120196816A1 (en) | 2005-06-23 | 2012-04-11 | Method for enhancing nutrient absorption with astragalosides |
US13/444,770 Abandoned US20120196817A1 (en) | 2005-06-23 | 2012-04-11 | Method for enhancing nutrient absorption with astragalosides |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/424,193 Active 2026-08-31 US8197860B2 (en) | 2005-06-23 | 2009-04-15 | Method for enhancing nutrient absorption with astragalosides |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/444,770 Abandoned US20120196817A1 (en) | 2005-06-23 | 2012-04-11 | Method for enhancing nutrient absorption with astragalosides |
Country Status (1)
Country | Link |
---|---|
US (3) | US8197860B2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102241685B (en) * | 2010-05-11 | 2013-11-06 | 四川科伦药业股份有限公司 | Method for separating monomer compounds from astragaloside for injection |
CN104698021B (en) * | 2015-01-22 | 2017-01-18 | 天津中医药大学 | Method for detecting content of primary metabolic components in astragalus injection |
US10610556B2 (en) | 2015-09-17 | 2020-04-07 | Therapeutic Solutions LLC | Compositions for regulation and control of appetite |
CN105435758A (en) * | 2015-12-02 | 2016-03-30 | 江苏农牧科技职业学院 | Immunoaffinity chromatographic column adopting astragaloside IV as ligand and application of immunoaffinity chromatographic column |
CN109100432A (en) * | 2018-02-05 | 2018-12-28 | 贵州医科大学 | Nine kinds of effective components are absorbed and the research method of transporting mechanism in Caco-2 cell model in Sheepear Inula Herb extract |
CN112998127B (en) * | 2021-04-26 | 2024-06-25 | 长沙博海生物科技有限公司 | Feed additive for improving content of nervonic acid and arginine in animal body |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1403470A (en) * | 2001-08-31 | 2003-03-19 | 上海中医药大学 | Astragalus saponin A with the function of resisting myocardial fibrillation |
US20080113925A1 (en) * | 2003-06-23 | 2008-05-15 | Calvin Bruce Harley | Compositions and Methods for Increasing Telomerase Activity |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6212792A (en) * | 1986-07-18 | 1987-01-21 | Osaka Chem Lab | Isolation of astragali radix saponin |
CN1087616C (en) | 1998-08-14 | 2002-07-17 | 卫生部人工细胞工程技术研究中心 | Medicine for treating hepatism |
CN1481805A (en) * | 2003-07-14 | 2004-03-17 | 军 王 | Medication for hepatitis and its preparation method |
GB2411114B (en) * | 2004-02-19 | 2006-08-16 | Phynova Ltd | A botanical drug or dietary supplement |
-
2009
- 2009-04-15 US US12/424,193 patent/US8197860B2/en active Active
-
2012
- 2012-04-11 US US13/444,765 patent/US20120196816A1/en not_active Abandoned
- 2012-04-11 US US13/444,770 patent/US20120196817A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1403470A (en) * | 2001-08-31 | 2003-03-19 | 上海中医药大学 | Astragalus saponin A with the function of resisting myocardial fibrillation |
US20080113925A1 (en) * | 2003-06-23 | 2008-05-15 | Calvin Bruce Harley | Compositions and Methods for Increasing Telomerase Activity |
Also Published As
Publication number | Publication date |
---|---|
US20120196817A1 (en) | 2012-08-02 |
US20100099633A1 (en) | 2010-04-22 |
US8197860B2 (en) | 2012-06-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20060292251A1 (en) | Method for enhancing nutrient absorption with astragalosides | |
US20120196816A1 (en) | Method for enhancing nutrient absorption with astragalosides | |
CN101959518B (en) | Pharmaceutical composition and poria extract useful for enhancing absorption of nutrients | |
CN109512926A (en) | Slow down composition and its application of toxicity caused by chemicotherapy | |
Kim et al. | The effects and mechanism of saponins of Panax notoginseng on glucose metabolism in 3T3-L1 cells | |
WO2010028075A1 (en) | Herbal composition for treating cancer | |
US10675317B2 (en) | Use of ginseng extract, ginsenoside and ginsenoside derivative in the preparation of medicine or health care product for treating cytomegalovirus infection disorders | |
US20090181904A1 (en) | Method for regulating nutrient absorption with ginsenosides | |
CN100574768C (en) | A kind of anticancer pharmaceutical composition and its production and use | |
CN104274489B (en) | Combined medicine for treating tumors | |
TWI441640B (en) | Pharmaceutical composition and extract of poria for enhancing uptake of nutrients | |
CN108452009A (en) | A kind of application including Common Leafflower Herb, rainbow conk, Radix Salviae Miltiorrhizae and the Chinese medicine composition of Asian puccoon in the drug for preparing treatment liver cancer | |
CN111840425A (en) | Traditional Chinese medicine composition for treating diabetic nephropathy and application thereof | |
CN105012327B (en) | Purposes of the steroid saponin RCE-4 in the drug for preparing prevention or treatment tumour | |
CN108452008A (en) | A kind of application including Common Leafflower Herb, rainbow conk, Radix Salviae Miltiorrhizae and the Chinese medicine composition of Asian puccoon in preparing the drug for inhibiting recurrence of PHC | |
CN101513427A (en) | Use of epimedin C | |
CN101073611B (en) | Medicinal composition for preventing tumor | |
CN104987357A (en) | Separation and preparation method of compound with antineoplastic activity | |
CN117599105B (en) | Traditional Chinese medicine compound composition with functions of delaying kidney aging and fibrosis as well as preparation method and application thereof | |
CN115518097A (en) | Anti-tumor medicine composition | |
US20240342143A1 (en) | Application of alkaloid compound hip in treatment of cardiac trauma | |
CN103156891A (en) | Preparation method of akebia fruit active components and preparation method of preparation of akebia fruit active components and application in preparation of antineoplastic medicines of preparation of foreknowledge sub-active components | |
CN111135223B (en) | Application of flavored herba Moslae oral liquid in preparation of medicine for treating infantile rotavirus enteritis complicated with myocardial injury | |
CN102068537B (en) | The preparation of Pericarpium Citri Reticulatae Radix Glycyrrhizae prevents and treats the health food of nasopharyngeal carcinoma and the production method of medicine | |
TWI317280B (en) | Method for regulating nutrient absorption with ginsenosides |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: NULIV SCIENCE, INC., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIN, HANG-CHING;CHANG, WEN-LIANG;CHANG, TSU-CHUNG;AND OTHERS;SIGNING DATES FROM 20060507 TO 20060710;REEL/FRAME:028192/0920 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |