CN1141938C - New application of threonic acid and its salt - Google Patents
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Abstract
The present invention relates to application of L-threonic acid, and a derivative of L-threonic acid, or salt of L-threonic acid (except L-threonic acid calcium and heavy metal salt) for preparing medicine for preventing and treating osteoporosis. Animal experiments prove that when threonic acid sodium is continuously used for 10 weeks, the threonic acid sodium has the good function of improving various pathological data of osteoporosis, and the bone density of the thighbone of a rat can be obviously enhanced (compared with p before administration, p is less than 0.01). Compared with the bone density of the thighbone and the calcium content of bone in a model control group, the bone density of the thighbone and the calcium content of bone of the rat can be obviously increased. Compared with the density and the thickness of bone trabecula in the model control group, the density and the thickness of bone trabecula can be increased. Compared with the content of ur-pyridinium before administration, the content (which is p of less than 0.01) of ur-pyridinium after the administration can be obviously reduced. Compared with the content of ur-calcium before administration, the content (which is p of less than 0.05) of ur-calcium can be obviously reduced.
Description
Invention field
The present invention relates to L-threonic acid THREONIC ACID. and derivant thereof and salt (except l threonic acid and the toxic heavy metal salt) in preparation prevention with treat purposes in the osteoporotic medicine.
Technical field
Osteoporosis is one of common osteopathia of old people, and multiple factor such as the generation of this disease and age growth and hormonal readiness decline, calcium metabolism disorder is relevant.Its final result is that bone formation obviously reduces, and bone resorption is greater than bone formation, and the bone amount reduces, and bone biomechanical property reduces, and causes fracture easily.Therefore, increase bone formation, reduce bone resorption, making the increase of bone amount is the osteoporotic important channel of treatment.
Prior art discloses the osteoporotic method of multiple treatment, comprises replenishing calcium and hormone (especially estrogen) etc.But it is desirable that the curative effect of replenishing calcium or hormone merely can not reach.
Summary of the invention
The purpose of this invention is to provide L-threonic acid THREONIC ACID. and derivant thereof and salt (except l threonic acid and the toxic heavy metal salt) in preparation prevention with treat purposes in the osteoporotic medicine.
The purposes of l threonic acid in the osteoporotic medicine of preparation treatment is known, and obtained Chinese patent, thinks at that time that it was a kind of organic calcium that the anti-osteoporosis activity of l threonic acid comes from it.The inventor finds that after further research L-threonic acid THREONIC ACID. and its non-calcium salt also have very strong osteoporosis biological activity, and have finished the present invention thus.
The present invention in 2 weeks of drug withdrawal, causes osteoporosis model to give two weeks of male rat retinoic acid 70mg/kg continuously.From bone density, bone biomechanical, the index of hematuria biochemistry and four aspects of bone meterological, observed giving threonic acid THREONIC ACID. sodium 2.3g/kg therapeutical effect continuously, and established Gaierqi D (vitamin D3 and calcium carbonate) (calcium carbonate+VD) (300mg calcium, 62.5 iu VD/kg), calcium citrate (300mg calcium/kg) and three groups of positive matched groups of sodium etidronate (100mg/kg) in addition osteoporosis rat.
After causing model, model control group is compared with the blank group, and rat femur density obviously descends (p＜0.01), and osteoporosis modeling success is described.
After 10 weeks of administration, the bone density of model control group continues to descend to some extent, with compare the difference (p＜0.01) that statistics is all arranged before blank group and the administration, long-pending the comparing with the blank group also of the calcium content of bone of femur, surface of bone obviously reduced, and illustrates that this model can keep stable osteoporosis state at experimental session.
Result of study shows, give threonic acid THREONIC ACID. sodium 10 weeks continuously, osteoporotic multinomial pathological index is all showed good improvement effect, can significantly improve rat femur bone density (with compare before the administration, p＜0.01), compare with model control group, can significantly increase the bone density and the calcium content of bone of rat femur; Compare with model control group, can increase bone trabecula density, increase bone trabecula thickness; With compare before the administration, urinate pyridine content (p＜0.01) after can significantly reducing administration; With compare before the administration, can reduce after the administration urine calcium content (p＜0.05).
The calcium citrate group is not seen notable difference to the influence of bone trabecula density, bone trabecula thickness and biochemical indicator and model control group, illustrates that independent calcium-supplementing preparation can not obtain effect preferably for osteoporotic treatment.
Gaierqi D (vitamin D3 and calcium carbonate) belongs to and will replenish the calcium and the bonded situation of VD effect, and result of study shows, its (though 300mg calcium/kg) can improve bone density, biomechanics index, show the ill effect that causes cartilaginous calcification simultaneously.
Use sodium etidronate separately, osteomalacia occurred, promptly a large amount of osteoids are piled up.
Need to prove that L-threose acid salt of the present invention does not comprise l threonic acid and L-threonic acid THREONIC ACID. and toxic metals,, for example comprise the salt that L-threonic acid THREONIC ACID. and sodium, potassium, zinc, magnesium, ammonium, ferrum, copper, chromium etc. form as the salt that lead, cadmium, hydrargyrum etc. form.
L-threonic acid THREONIC ACID. of the present invention and L-threose acid salt can adopt oral medication, can accept the form use of compositions with various pharmaceutical preparatioies such as tablet, capsule and pharmacy.Form that also can injection is used.
According to pharmaceutical composition of the present invention, can contain a certain amount of L-threonic acid THREONIC ACID. or its derivant or salt as active component, also can contain pharmaceutically acceptable carrier, these pharmaceutically acceptable carriers can be the various carriers that are widely used in the prior art in the medicine, as excipient.Pharmaceutical composition of the present invention can prepare by method well known in the prior art such as mixing, pelletize, tabletting.
The pharmaceutical composition of the L-of containing threonic acid THREONIC ACID. or derivatives thereof of the present invention or salt can also comprise the optional components that various pharmacy are used, as flavouring agent, coloring agent, sweeting agent etc.The pharmaceutical composition that the present invention preferably contains L-threonic acid THREONIC ACID. or derivatives thereof or salt comprises up to 50wt%, preferred 80wt%, and more preferably L-threonic acid THREONIC ACID. or derivatives thereof or the salt of 90wt%, all the other be excipient and other optional components.
The consumption of L-threonic acid THREONIC ACID. and derivant thereof and salt can decide according to factors such as particular compound, patient body weight, ages.For example, L-threonic acid THREONIC ACID. sodium consumption can be 0.5 to restrain 10 gram/skies.
Experiment L-threonic acid THREONIC ACID. sodium is to the research of osteoporosis pharmacology effect
One, test material
1, medicine
L-threonic acid THREONIC ACID. sodium: clear solution, content 36% is provided by the Yatai Research Center of Life Sciences, Junneng Group Co., Beijing.
Gaierqi D (vitamin D3 and calcium carbonate) (adult preparation): Rieter pharmaceutical Co. Ltd in Suzhou produces, calcium content 600mg/ sheet (calcium carbonate 1500mg/ sheet), VD:125 iu.
Calcium citrate: raw material, white powder, Daewoo's biochemical corp is produced.
Sodium etidronate: trade name, the special phosphorus of nation.The happy pharmaceutical Co. Ltd of Chengdu chrysanthemum, the 200mg/ sheet.All with the 0.5%CMC-Na configuration, the administration volume is 10ml/kg to medicine.
2, reagent:
Retinoic acid: Dongbei Pharmaceutical General Factory production.Lot number: 850501.
Test kit: bone specificity alkaline phosphatase enzyme reagent kit (Nletra Biosystems, the U.S.), urine pyridine test kit (Nletra Biosystems, the U.S.), Bone Gla protein test kit (BioSoure EuropeS.A, Belgium).
Quadracycline: tablet, 0.25g/ sheet, Chinese-foreign joint Tianjin Feiying Pharmacy Co., Ltd..
3, animal
The Wistar rat, male, three monthly ages, about 300g, animal housing provides by Tianjin Inst. of Materia Medica.
4, isozygoty and become to hang down the calcium feedstuff
40% superior wheat flour, 40% Semen Maydis flour, 10% casein, 5% Oleum Arachidis hypogaeae semen, 1% cellulose, 3%AIN-76 salt-mixture, 1%AIN-76 cellulose mixture, 0.3% methionine.Wherein calcium salt replaces with NaCl.Calcium content: 30mg/100g.Phosphorus content 22mg/100g.
Two, test method
90 of three monthly age male rats, 250～320g, take out 12 at random as blank, give normal feedstuff and tap water, other rat oral gavage gives 70mg/kg/ days retinoic acid, and the administration volume is 10ml/kg, and low calcium feedstuff of feed and deionized water, after 2 weeks of administration, two weeks of drug withdrawal are caused osteoporosis model.Be divided into 5 groups at random by body weight.
1, model control group (group 2) gives normal saline;
2, Gaierqi D (vitamin D3 and calcium carbonate) group (group 3) gives 300mg calcium/kg (VD 62.5 ius/kg);
3, calcium citrate group (group 4) gives 300mg calcium/kg;
4, L-threonic acid THREONIC ACID. sodium group (group 5) gives 2.3g/kg;
5, sodium etidronate group (group 6) gives 100mg/kg.
Give medicine 10 weeks respectively, observe medicine osteoporotic therapeutical effect.The 15th day and the 3rd day are subcutaneous before drug withdrawal gives quadracycline 30mg/kg labelling, is used to measure the dynamic indicator of bone.Remove the blank group during the whole test and give normal feedstuff and tap water, other 5 groups are hanged down calcium feedstuff and deionized water.
3.2 the minute of test observation index:
The mensuration of index before the administration: measure the bone density of every rat right side femur, and collect 12h urine sample on an empty stomach, be used for measuring urine phosphorus, urine calcium, urine pyridine content.Be used to determine to cause the degree of model.
The mensuration of index after the administration:
1, gathers 12h fasting urine sample before the drug withdrawal;
2, after the drug withdrawal second day, femoral artery blood-letting blood sample collection this;
3, adopt the bone sample after the execution immediately: the femur and the tibia that separate rat two back legs, separate from articular surface, right side femur label is freezing to be used to measure bone density and to carry out other test, the left side femur is fixed in 75% alcoholic solution, be used for the metrological mensuration of bone, the both sides tibia is fixed in 10% formalin solution, is used for biological mechanics determining.
3.3 index determining method:
1, bone densitometry: with dual intensity X line borne densitometers (HOLOGIC company, QDR-4500W) determination test rat right side femoral bmd.With 1% pentobarbital sodium 0.8ml/kg anesthesia, be convenient to living body measurement before the administration.After the administration, the rat sacrificed by exsanguination is separated rat right side femur from the hip joint to knee joint, be used to measure bone density.
2, the biological mechanics determining of bone: bending resistance and the resistance to tension of measuring bone with the WD-1 type electronic universal tester with the tibia of test rat.Because the elastic modelling quantity of every rat tibia can't be measured, can not be the big or small positive correlation of potential value that collects in the process of the test and power, so with the sizes values of potential value replacement power, add up, observe the influence of medicine to the biomechanics of bone with the peak of potential value.
3, the mensuration of biochemical indicator: with the Bone Gla protein in MRX-II type enzyme immune biochemical instrument (U.S. Dynex company) usefulness ELISA method mensuration serum and the urine sample, specificity bone alkaline phosphatase, the content of urine pyridine phosphorus.(Dutch prestige figure Selectra) measures the calcium in serum and the urine, the content of phosphorus content with automatic clinical chemistry analyzer.
4, the metrological mensuration of bone:
(1) dicing method: each is organized experimental rat left side femur and fixes with 75% ethanol, randomly draws 5 routine specimen for every group, after the dehydration, selects the embedding of femur internal malleolus flat plastic, curing step by step; With Jung K type bone cutting machine section, thick about 7um cuts 4 continuously, gets wherein 2 at random and carries out Gemisa, von Kossa dyeing respectively, treats the every index of observation after the mounting.
(2) observational technique: histological observation adopts the painted section of Gemisa, observes with ordinary light source; Tetracycline marker is observed and is adopted the painted section of Gemisa, observes with fluorescence light source; Osteoid is observed and is adopted the painted section of von Kossa, observes with ordinary light source.
Each femur internal malleolus specimen is selected bone trabecula under the epiphyseal plate, in dividing, in, outer 3 points, adopt the OLYMPUS-BHT fluorescence microscope, MPLAS-500 color pathological picture and text instrument utilizes peaceful image company of Tongji Medical Univ software to carry out scanning of image, the typing microcomputer carries out the osseous tissue morphometry and measures.3 measured value is got average, and as the desired value of this bone specimen, each specimen data is carried out statistical procedures again.
5, statistical method: result of the test is expressed as X (average) ± SD (standard deviation).Relatively, adopt pairing t-test before and after the administration, relatively adopt non-matching t-test between group.
Four, result of the test
4.1 the result of bone densitometry:
The osteoporosis patient is external clinically shows as substantially: bone calcium is lost, and bone density descends, osteanabrosis, and complication-bone biomechanical property descends easily fracture (the little fracture of inwardness-bone, outwardness-Yi fracture site fracture or compression).
Bone density is to judge the basic index of patient's osteoporosis degree clinically, also is simultaneously the important indicator of judging the curative effect of medicine.So it is significant to judging the osteoporotic curative effect of treatment after each group test rat administration to the improvement of bone density.When measuring bone density, obtain long-pending (can be considered bone volume) two indexs of rat femur calcium content of bone and surface of bone.Measure the rat femur bone mineral content with dual intensity X line borne densitometers (DEXA) and compare with single photon bone density machine (SPA), mensuration has accuracy height, the advantage of good reproducibility.
Each group test rat femur bone density the results are shown in Table 1, the model control group bone density was starkly lower than blank group (p＜0.01) before result of the test showed administration, other each group is suitable with model control group, does not see significant difference (P＞0.05), illustrates that osteoporosis model duplicates successfully.
Give medicine continuously after 10 weeks, compare slightly before the bone density of model control group and the whole femur of blank group and the administration and reduce.The bone mineral content of the femur of model control group, bone volume, bone density is compared obvious reduction with the blank group, show that this model not only can influence the growth of bone, make the volume atrophy or the poor growth of bone, and can suppress bone calcium deposition, and cause bone calcium to be lost seriously, bone density obviously reduces (p＜0.01).
After giving threonic acid THREONIC ACID. sodium, compare remarkable increase (p＜0.01) before bone density and calcium content of bone and the administration, also apparently higher than model control group, illustrate that the threose acid group can improve the utilization rate of calcium, make bone build again/absorption equilibrium tends to bone and builds, promote bone calcium deposition, thereby the raising bone mineral content, bone density improving makes that bone can normally extend, overstriking.In addition, Gaierqi D (vitamin D3 and calcium carbonate), calcium citrate, sodium etidronate group also can obviously increase the bone density of rat.
4.2 the biological mechanics determining result of bone
Tibia bending resistance and the resistance to tension of each group test rat see Table 2.By table as seen, each group is to bending resistance and resistance to tension and notable difference, and threonic acid THREONIC ACID. sodium group of the present invention has the trend of increase.Though the Gaierqi D (vitamin D3 and calcium carbonate) group is carbon source with the calcium carbonate, absorb badly, added VD, so biomechanics is had certain influence.And notice, threonic acid THREONIC ACID. sodium group finishes the back at elastic stage and tangible plasticity platform occurs, then occurs plastic stage, eventual failure again, and tangible plasticity platform does not all appear in model control group and blank group, and elastic stage and plastic stage are not obvious respectively.From the mechanics angle, the plasticity platform occurring is because of the increase along with external force, after acquiring a certain degree, the elasticity of bone disappears, and bone is under the effect of external force, occur between inner hone lamella or other structure sliding, with the effect of opposing external force, after sliding into the limit, it is exactly the plastic stage of bone, irreversible distortion, eventual failure appear in bone.This shows that the plasticity platform appears in bone, show the queueing discipline of bone interior bone calcium on the one hand, is not unordered state, illustrates that on the other hand the bending resistance of bone strengthens yet, and illustrates that threonic acid THREONIC ACID. sodium has the effect of improving the rat tibia bending resistance.
4.3 the measurement result of biochemical indicator
For investigating the mechanism of action of threonic acid THREONIC ACID. sodium, the spy has observed the influence of each administration group to blood, urine biochemical indicator.Bone Gla protein (osteocalcin) and specificity bone alkaline phosphatase (serum thermal instability alkali phosphatase serum heat-labile alkaline phosphatase) are osteoblast and produce its content back mapping of a set onto another osteocyte active level in serum.Urine pyridinium crosslink co-product (urinarypyridinium cross-links) shows that collagen protein decomposes situation, shows the absorbing state of bone.
Each administration group Bone Gla protein, specificity bone alkaline phosphatase, urine pyridine, the content that reaches serum calcium, phosphorus, urine calcium, phosphorus sees Table 4,5 and 6.By the data in the table as can be known, give threonic acid THREONIC ACID. sodium, the urine pyridine obviously reduces, and compares p＜0.01 before the administration, compares p＜0.05 with model control group.Illustrate that the threose acid group has than significant inhibitory effect the absorption of bone; Bone specificity alkali phosphatase is had the reduction effect, compare p＜0.01 with model control group; Urinate calcium content after reducing administration, compare p＜0.05 with model control group.And other each administration group hematuria biochemical indicator and model control group compare no significant difference.
4.4 bone meterological testing index
Bone meterological is the growth conditions of understanding bone by the change of the micro structure of observing bone.Each is organized bone histomorphometry's parameter and sees Table 7.
Give threonic acid THREONIC ACID. sodium 10 weeks as can be known by data in the table, rat femur bone trabecula density, thickness have the trend of increase.
Gaierqi D (vitamin D3 and calcium carbonate) (300mg calcium/kg) organize, bone trabecula density is compared with model control group, same increasing obviously, but the osteoid amount obviously reduces, even can not measure, though being described, Gaierqi D (vitamin D3 and calcium carbonate) can increase bone trabecula density, life-time service has the effect that promotes the cartilage mineralising.
Calcium citrate (300mg calcium/kg) organize, bone trabecula density is compared with model control group and is not seen obvious increase, and osteoid and osteocyte obviously reduce, and illustrates to give the therapeutical effect that calcium preparation can not play osteoporosis merely, on the contrary may be owing to feedback suppression influences normal osteogenesis.
Sodium etidronate group (100mg/kg) group, bone trabecula density is compared with model control group and is not seen significant change (p＞0.05), and osteoid obviously increases, and causes bone trabecula thickness obviously to increase, and osteoblast obviously increases, and osteoclast obviously reduces.Cause halisteretic possibility because diphosphonic acid salt medicine is taken to have for a long time, this test illustrates that this side effect has appearred in sodium etidronate, causes the osteoid bulk deposition, and bone is difficult to calcification, causes above-mentioned phenomenon.
Table 1
| Dosage | Bone density before the medicine | Bone density behind the medicine | Bone amount behind the medicine | Bone volume behind the medicine | |
| The blank group | - | 0.132±0.012 ** | 0.112±0.01 6**# | 0.145±0.027** | 1.295±0.091* |
| Model control group | - | 0.080±0.025 | 0.068±0.01 1 | 0.082±0.013 | 1.197±0.084 |
| The Gaierqi D (vitamin D3 and calcium carbonate) group | 300mg calcium/kg | 0.083±0.020 | 0.100±0.02 2** | 0.129±0.040** | 1.263±0.138 |
| The calcium citrate group | 300mg calcium/kg | 0.083±0.021 | 0.106±0.01 8**# | 0.135±0.036** | 1.253±0.123 |
| Etidronic acid calcium group | 100mg/kg | 0.082±0.029 | 0.093±0.00 8** | 0.105±0.016** | 1.133±0.096 |
| Threonic acid THREONIC ACID. sodium group | 2.3g/kg | 0.078±0.023 | 0.100±0.00 8**## | 0.123±0.017** | 1.222±0.100 |
# compares P＜0.05,0.01 * before ## and the administration, and * * compares P＜0,05,0.01 with model control group
Table 2
| Dosage | N | Draw the elastic limit value | Draw the strength degree value | |
| The blank group | - | 6 | 334±59* | 382±68* |
| Model control group | - | 4 | 230±62 | 272±74 |
| The Gaierqi D (vitamin D3 and calcium carbonate) group | 300mg calcium/kg | 5 | 340±45* | 403±50* |
| The calcium citrate group | 300mg calcium/kg | 6 | 271±56 | 319±67 |
| Etidronic acid calcium group | 100mg/kg | 6 | 146±41* | 172±48* |
| Threonic acid THREONIC ACID. sodium group | 2.3g/kg | 6 | 255±57 | 297±68 |
* be to compare P＜0.05,0.01 with model control group
Table 3 L-threonic acid THREONIC ACID. sodium is to the influence of osteoporosis rat biomechanical parameter
| Dosage (calcium/kg) | n | The fracture load by bending value | |
| The blank group | - | 6 | 474±46*# |
| Model control group | - | 4 | 304±107 |
| The Gaierqi D (vitamin D3 and calcium carbonate) group | 300mg calcium/kg | 5 | 433±72 |
| The calcium citrate group | 300mg calcium/kg | 6 | 369±75 |
| Etidronic acid calcium group | 100mg/kg | 6 | 267±48# |
| Threonic acid THREONIC ACID. sodium group | 2.3g/kg | 6 | 350±116 |
*, * * compares P＜0.05,0.01 # with model control group, and ## compares p＜0.05,0.01 with the calcium citrate group
Table 4 L-threonic acid THREONIC ACID. sodium is to the influence (n=12) of osteoporosis rat urine pyridine content
| Dosage (calcium/kg) | Urine pyridine before the medicine | Urinate pyridine behind the medicine | |
| The blank group | - | 102±14 | 93±26 |
| Model control group | - | 105±12 | 93±34 |
| The Gaierqi D (vitamin D3 and calcium carbonate) group | 300mg calcium/kg | 103±15 | 111±18 |
| The calcium citrate group | 300mg calcium/kg | 106±20 | 109±36 |
| Etidronic acid calcium group | 100mg/kg | 105±18 | 117±25 |
| Threonic acid THREONIC ACID. sodium group | 2.3g/kg | 107±14 | 57±19**# |
*, * * be with administration before P＜0.05,0.01 # relatively, ## be and model control group comparison p＜0.05,0.01
Table 5 L-threonic acid THREONIC ACID. sodium to osteoporosis rat urinate calcium, phosphorus content influence (X ± SD, n=12)
| Dosage (calcium/kg) | Urine calcium before the medicine | Urinate calcium behind the medicine | Urine phosphorus before the medicine | Urinate phosphorus behind the medicine | |
| The blank group | - | 0.29±0.24 | 0.16±0.07 | 18.64±18.08 | 19.50±17.43 |
| Model control group | - | 0.42±0.16 | 0.12±0.12* | 10.40±10.90 | 8.35±7.77 |
| The Gaierqi D (vitamin D3 and calcium carbonate) group | 300mg calcium/kg | 0.31±0.17 | 0.27±0.39 | 9.84±3.68 | 4.92±2.09* |
| The calcium citrate group | 300mg calcium/kg | 0.30±0.19 | 0.40±0.43 | 11.23±8.84 | 6.88±3.14 |
| Etidronic acid calcium group | 100mg/kg | 0.29±0.18 | 0.12±0.07* | 13.39±13.34 | 15.27±9.32 |
| Threonic acid THREONIC ACID. sodium group | 2.3g/kg | 0.44±0.23 | 0.39±0.30# | 13.83±17.72 | 7.93±2.58 |
* with before the administration compare p＜0.05, # and model control group compare, p＜0.05
Table 6 L-threonic acid THREONIC ACID. sodium is to the influence (n=8) of osteoporosis rat blood parameters
| Dosage (calcium/kg) | Bone Gla protein | Bone specificity alkali phosphorus enzyme | Blood calcium | Serium inorganic phosphorus | |
| The blank group | - | 0.98±0.10* | 10.64±1.00 | 3.83±1.53 | 2.87±1.19 |
| Model control group | - | 0.84±0.07 | 10.83±0.55 | 2.62±0.37 | 2.53±0.26 |
| The Gaierqi D (vitamin D3 and calcium carbonate) group | 300mg | 0.79±0.17 | 10.36±0.35 | 3.09±0.39* | 1.48±0.14** |
| The calcium citrate group | 300mg | 0.77±0.09 | 10.46±0.99 | 3.07±0.25** | 1.45±0.19** |
| The sodium etidronate group | 100mg | 0.93±0.14 | 9.73±0.93* | 2.88±0.13 | 1.69±0.26** |
| Threonic acid THREONIC ACID. sodium group | 2.3g | 0.82±0.09 | 9.71±0.67** | 2.89±0.13 | 1.30±0.16** |
*, * * and model control group compare, p＜0.05,0.01
Table 7 L-threonic acid THREONIC ACID. sodium is to the influence of osteoporosis rat bone meterological index
| Dosage (calcium/kg) | Average bone trabecula density | Average bone trabecula is thick | The osteoid ratio | Average osteoid is wide | Osteoblast | Osteoclast | |
| The blank group | - | 54.18±5. 61** | 108.24±2 5.05 | 32.72±6. 43 | 7.76±1.5 2 | 40.16±13 .75 | 21.50±5. 65 |
| Model control group | - | 34.66±7. 37 | 100.09±1 8.96 | 32.97±4. 63 | 5.81±1.1 7 | 52.73±6. 98 | 23.52±6. 43 |
| The Gaierqi D (vitamin D3 and calcium carbonate) group | 300mg | 52.04±7. 01** | 112.18±3 1.20 | - | - | 39.98±10 .62 | 22.16±4. 69 |
| Calcium citrate | 300mg | 36.03±4. 79 | 120.28±1 0.30 | 6.13±2.6 3** | 2.00±0.5 3** | 10.24±2. 01** | 5.92±1.3 3** |
| The sodium etidronate group | 100 mg | 34. 96±9.01 | 174 .63±35.1 5** | 65. 88±9.80* * | 57. 64±18.32 ** | 65. 40±13.77 | 13. 41±5.08* |
| Threonic acid THREONIC ACID. sodium group | 2.3g | 42.40±7. 17 | 128.22±3 2.28 | 37.96±7. 08 | 5.12±1.1 0 | 44.82±4. 38 | 21.04±2. 18 |
*, * * compares p＜0.05,0.01 with the blank group
Embodiment
L-threonic acid THREONIC ACID. sodium 400 grams mix with pregelatinized Starch 200 grams, fully mix with magnesium stearate 7 grams again, add 5%PVP (containing the PVP30 gram) solution then, and mix homogeneously is granulated, oven dry, and granulate, tabletting is made 1000 unit tablets.
Claims (3)
1, the application of L-threonic acid THREONIC ACID. sodium in the medicine of preparation prevention of osteoporosis.
2, the application of L-threonic acid THREONIC ACID. sodium in the osteoporotic medicine of preparation treatment.
3, be used for preventing or treating osteoporotic pharmaceutical composition, it is characterized in that containing the L-threonic acid THREONIC ACID. sodium of effective dose.
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| CN113143901A (en) * | 2007-03-22 | 2021-07-23 | 纽罗森特里亚股份有限公司 | Magnesium composition and use thereof |
| US8163301B2 (en) | 2007-03-22 | 2012-04-24 | Magceutics, Inc. | Magnesium compositions and uses thereof for metabolic disorders |
| CN106083567B (en) * | 2016-06-22 | 2018-08-31 | 张家港威胜生物医药有限公司 | A kind of preparation method of L- magnesium threonates |
| CN106333366A (en) * | 2016-09-28 | 2017-01-18 | 张家港威胜生物医药有限公司 | Composition with anti-fatigue effect and preparation method and application thereof |
-
2001
- 2001-12-26 CN CNB011369590A patent/CN1141938C/en not_active Expired - Fee Related
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