CN1331592A - Liposomic niflumic acid-new transdermal anti-inflammatory medicine - Google Patents

Liposomic niflumic acid-new transdermal anti-inflammatory medicine Download PDF

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Publication number
CN1331592A
CN1331592A CN99814948A CN99814948A CN1331592A CN 1331592 A CN1331592 A CN 1331592A CN 99814948 A CN99814948 A CN 99814948A CN 99814948 A CN99814948 A CN 99814948A CN 1331592 A CN1331592 A CN 1331592A
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CN
China
Prior art keywords
liposome
niflumic acid
sealing
skin
ear
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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.)
Pending
Application number
CN99814948A
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Chinese (zh)
Inventor
K·迪麦特佐斯
H·凯曼诺
M·拉里斯
G·帕莱欧安诺
A·乔治欧保罗斯
G·萨摩里斯
S·哈特奇安托尼奥
G·詹尼希斯
G·诺尼西斯
C·萨瓦-迪莫保罗
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PN Gerolymatos SA
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PN Gerolymatos SA
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Publication of CN1331592A publication Critical patent/CN1331592A/en
Pending legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/10Dispersions; Emulsions
    • A61K9/127Liposomes
    • A61K9/1277Processes for preparing; Proliposomes
    • A61K9/1278Post-loading, e.g. by ion or pH gradient
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/465Nicotine; Derivatives thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/10Dispersions; Emulsions
    • A61K9/127Liposomes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P19/00Drugs for skeletal disorders
    • A61P19/02Drugs for skeletal disorders for joint disorders, e.g. arthritis, arthrosis
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P29/00Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]

Abstract

The present invention relates to the encapsulation of the drug Niflumic acid in liposomes with the purpose to create a new transdermal non-steroidal anti-inflammatory formulation. The Niflumic acid as well as its ester derivates, have been encapsulated into liposomes with different lipid formulations in order to achieve the increased effectiveness of the active compound. The liposome suspension, with or without the encapsulated drug has been formulated as a cream and a stability study of the final formulation has followed.

Description

The saturating anti-inflammatory drug of the skin that the liposome niflumic acid is new
In the period of in the past several and since people for drug molecule in liposome wrapper technology nourish very big interest, make this technology that very big progress arranged.
Various molecule is successfully sealed, and directly the result is that toxicity lowers, pharmacokinetic property makes moderate progress and makes medicine increase the selectivity and the specificity of tissue and target organ.
In the international literature catalogue, a large amount of lists of references about the liposome medicament dosage form are arranged.Wherein many still are in the clinical research stage, and also some has been registered and begun and has sold on market.
In the other medicines of liposome dosage form, we must should be mentioned that find pleasure in (Minoxidil) in econazole, amphotericin B, minot ground and some are in the anticancer and antiviral drugs in clinical research stage.
About the purposes of the saturating preparation of skin, the subject matter of medicine by cutaneous metastatic is that the permeability of ingredient is undesirable, or since medicine to transfer to the speed of blood and lymph too fast so that reduce in the time bar internal therapy concentration of needs.The liposome dosage form not only has gratifying permeability but also has can control the effect that active component discharges.These character make the liposome dosage form be used for skin ideally and treat thoroughly.
It is a principal object of the present invention to prepare liposome and anti-inflammatory substance niflumic acid and esters thereof are encapsulated among them.Niflumic acid is a kind of well verified active component, and it has been used to the saturating preparation of various skins.
Target of the present invention is the new liposome dosage form with top standard of development and has the antiinflammatory dosage form of advanced drugs kinetic property.This medicine can be applied to similar situation in arthritis and wound and the rheumatism.
Sixty-four dollar question to be solved by this invention is to select these lipids to carry out the preparation of liposome, and they will satisfy following standard:
Biocompatibility with human skin
Be made into liposome with required physicochemical properties (number of structure, form, diameter, lipid bilayer, crystallization and with time, temperature and concentration dependent stability).
Liposome seals and keeps the ability of the required physicochemical property of medicine to medicine.
Need in satisfying the lipid of above-mentioned standard, those select according to the result of study of pharmacokinetics.
The lipid molecule that preparation is estimated is some natural molecules, for example: HSPC (hydrogenated soybean lipid), EPC is (from the mixture of the saturated and unsaturated lipid of egg, and some synthetic lipids, for example: DSPC, DMPC and DPPC, they are saturated phosphatidylcholine esters.The methodology of technology, the physicochemical property of liposome, liposomal encapsulated drug system and the pharmacokinetic study of preparation liposome hereinafter will be provided.
Scientific method (complete and analyze description)
I. lipid and raw material supply, the preparation of niflumic acid ester
Be prepared for preparing lipid or some natural materials of liposome, for example: HSPC (hydrogenated soybean lipid), EPC or some synthetic lipid, for example: phospholipid DSPC, DMPC and DPPC.The aliphatic chain of synthetic lipid is stearic acid or myristic acid or Palmic acid, and they are different aspect the parameter of the fusing point of the number of carbon atom, chain length, aliphatic chain and decision liposome physicochemical property.
The preparation of liposome not only can be undertaken by different phospholipids incorporate, can also be undertaken by phospholipid is combined with the cholesterol of varying level.Cholesterol can be regulated the stability of liposome, and this discharges for controlled delivery of pharmaceutical agents is essential.Can also be with having following composition and the compositions similar to skin prepares liposome: ceramide, cholesterol, sulphuric acid cholesterol and fatty acid.Target of the present invention is the product that preparation has bigger possibility biocompatibility.
II. the preparation of liposome and physicochemical property
Preparation method:
A) hydration by lipid molecule prepares the lipid film.Carry out hydration after in rotary evaporation in vacuo instrument (dodging the formula vaporizer), removing organic solvent (chloroform).For the pH regulator of lipid internal milieu, the selection of hydrating agents is very important.TES (N-three [methylol] methyl 2-aminoethyl sulfonic acid), MES (2-[N-morpholino]-ethyl sulfonic acid), HEPES (N-[2-ethoxy] piperazine-N-2-ethyl sulfonic acid) and ammonium sulfate can be used, the mensuration of pH, osmotic pressure and ionic strength need be carried out them.The hydration of lipid causes them self to form multilamellar liposome.
B) formation of monolayer and few layer liposome.Use for skin is saturating, few layer liposome has bigger advantage (because volume is less thereby permeability is better) than multilamellar liposome.The method for preparing liposome is included under-70 ℃ multilamellar liposome is freezing, heats under the temperature that is higher than aliphatic chain (suitable-anti-) fusing point immediately then.This process repeats 10 times, final widow's layer liposome that form, and its big or small homogeneity for next step provides convenience.
C) adopt extrusion system, obtain the liposomal samples of homogeneous (with regard to diameter) size with many carbon of special diameter filter membrane.
D) isolate the buffer that is not encapsulated in the liposome by gel chromatography.
In order to implement this research, need preparation MLV (multilamellar carrier), SUV (little monolayer) and LUV (big monolayer) liposome, and estimate sealing, one side is the hydration part that the hydrophilic segment of niflumic acid enters unilamellar liposome, is that esters parent ester product packaging is in the lipid bilayer of multilamellar liposome on the other hand.
Physicochemical property
The physical and chemical parameter of the liposome that must estimate in this stage has:
Number-the form of diameter-diameter homogeneity-bilayer, thermodynamic stability (relevant with the lipid sample concentration), interactional existence in the sample, the probability that is separated with temperature.
The physics and chemistry technology that adopts is had big resolution capability, be appointed as quantitatively and light-thermal technology qualitatively.
1. quasi-elastic light scattering can be studied the full distribution of liposome diameter.
Possible Study of Interaction in the sample.The research of the agglomeration that liposome is possible.The evaluation (Bi-reftactiveness) that mode of appearance is learned.
2. microscopy.Analyze with image processing and bondedly to contrast microscopy and reef knot closes contrast microscopy (Nomarski-DIC),
This technology is representative greater than the liposome of 0.5 μ m to particle diameter.
3. atomic force microscopy (AFM): can the liposome of representative diameter between 10nm-2 μ m.Also can represent lipid bilayer.
4. differential scanning calorimetry is learned (DSC): the thermokinetics research of liposome stability.Phase and the evaluation and the feature that change mutually in the lipid bilayer.The indirect purity experiment of liposome.
III. drug molecule is sealed, the Study on Physico-chemical of medicine lipid system
To adopt different types of liposome to carry out sealing of drug molecule.
A) niflumic acid is sealed
Because liposome interior has different pH value with the outside, can niflumic acid be encapsulated into the inside of liposome according to the method that active component shifts.Contain the such fact of ionic group owing to be in the acid internal medium Chinese medicine of liposome molecule, this molecule will be accepted proton and encapsulated.Seal under the transition temperature that will occur in liposome fat chain.Seal percentage ratio and be about 60-80%.The ratio of niflumic acid and lipid is 1: 53 (theoretical value is 1: 50).Can successfully isolate non-encapsulated niflumic acid by gel chromatography, obtain containing the liposome of niflumic acid.Can be with HPLC and UV-Vis to sealing niflumic acid analysis.
With UV/Vis niflumic acid/lipid is estimated.For sealing of niflumic acid, can adopt MLV (multilamellar carrier), SUV (little single-carrier) and LUV (big single-carrier) liposome, the intrinsic value of maximum possible.
Greater than 90%, and the ratio of niflumic acid and lipid is 1: 55 (theoretical value is 1: 50) with the liposomal encapsulated ratio of MLV.
B) niflumic acid lipophilic esters seals
Niflumic acid lipophilic esters is encapsulated in the liposomal lipid bilayer.Adopt multilamellar liposome so that (bilayer) available volume is increased.From the process of the lipid evaporation organic solvent that is used for preparing lipid film (referring to 2a), adding lipophilic molecules.Isolate non-encapsulated medicine by gel chromatography, and carry out the analysis of medicine/lipid ratio.Carry out the analysis of medicine with HPLC.
C) physicochemical property of drug-to-lipid system
Page 41,2,3,4 in provided physical and chemical parameter.Adopt isothermal titration to carry out the thermokinetics research that drug substance is sealed in addition.
In this, people are for because the change that occurs in the physicochemical property in the liposome that drug encapsulation caused has very big interest.
Similar in the technology that is adopted and stage 2.
In addition, also adopt the titration of isothermal trace calorifics to carry out the thermokinetics research that drug molecule is sealed.The microscope upgrading of being recommended will provide more detailed expression for the chemical composition that is in the surface of liposome under the research.Especially being encapsulated under the situation of lipid bilayer, active component can be made chart.
IV. pharmacokinetic study
Pharmacokinetic study is included in buffer solution (external) and the experiment of the drug release in 50% rat plasma (in the body).
In order to study stability of drug, carried out the dynamics research relevant (refrigerator temperature is 2 ℃, 25 ℃ of room temperatures), and under 37 ℃, carried out the research of drug release with the time.
For progressively the discharging and avoid possible toxicity phenomenon of testing drug, under 45 ℃ and 55 ℃, carried out high temperature research.In all cases, with respect to entrapped pharmaceutical preparation, those free pharmaceutical preparatioies will be under the control by gel chromatography, and analyze with UV-Vis.Also measured the ratio of medicine and lipid.
Analytical method is as follows:
A) releasing research in buffer
TES (N-three [methylol] methyl 2-aminoethyl sulfonic acid), MES (2-[N-morpholino]-ethyl sulfonic acid), HEPES (the N-[2-ethoxy] piperazine-N-2-ethyl sulfonic acid.
This is the indication that medicine discharges from liposome.After in the specified gap that material is encapsulated into liposome, material is analyzed with HPLC (mobile phase is alcohol-water) and UV-VIS.
B) release in vitro of medicine on skin
Obtain skin of back on one's body from hairless mouse, remove fatty tissue with blade, heated 60 seconds, (chorium) isolates epidermis from chorium.Adopt liposome solutions and in the interval of standard, collect blood serum sample, analyze with HPLC.
C) experiment in the body that absorbs the drug on the skin
Gather serum or plasma sample, centrifugal after, extract active component and HPLC and UV-Vis and measure.
Adopt this method, can determine that medicine is at skin, blood, intravital local concentration and total absorption strength.
Exploitation-the quality control of V. final pharmaceutical dosage form
The liposome medicament that presents optimal absorption can be mixed with cream, gel or washing liquid.For this purpose, need to select the prescription of product, so that the liposome product can disperse and/or be dissolved in wherein.
From prepared product, selected two prescriptions, they have satisfied some standards in the best way, for example application approach, outward appearance and viscosity.
For the life-span of product is described, these two products have been carried out stability experiment, the parameter of being studied is as follows: outward appearance, pH, viscosity, solid residue, active component and anti-corrosion measure etc.Research is in different temperature (for example 4,25,37,45 ℃) and freezing-separate under the refrigerated endless form and carry out.
Also the concentration of product in microorganism of selecting has been carried out the microbiology experiment.Also carried out exciting (challenge) experiment to prove the effectiveness of corrosion protection system.
VI. the effectiveness of liposome medicament
A) pharmacokinetic study
Carry out according to the 4th section described method,, adopt the mice that does not have hair in vivo promptly at the external ecbatic that is used for.Ensuing method is described identical with the 4th section, and different is to substitute the liposome product with final products to be applied directly on the skin.The product of result of study and non-liposome dosage form is compared.
From the final products of previous stage, select one and have the dynamic (dynamical) product of optimal drug, but can also carry out the further improved research of the composition relevant with drug release.
B) pharmaceutical research
In vivo the pharmacological property of final selected product is tested.On the skin of hairless mouse, cause inflammation with ultraviolet light; test inflammation by the formation of measuring prostaglandin and free radical; because this can estimate by the reduction of natural inhibitor skin care effect, what they showed is that the antioxidant capacity of antioxidant such as vitamin E, vitamin C, ubiquinone and ubiquinol on skin descends.

Claims (17)

1. be encapsulated in the liposome with the anti-inflammatory drug niflumic acid and as all derivants of synthesizing ester, these liposomees are prepared by following lipid: EPC (egg phosphatidylcholine), DSPC (distearoyl phosphatidylcholine), DMPC (dimyristoyl phosphatidyl choline), DPPC (dipalmitoyl phosphatidyl choline), HSPC (hydrogenated soya phosphatide phatidylcholine), the compositions that their mixture, the above-mentioned lipid mixtures of mentioning and they and cholesterol and ceramide are formed.
Described in the claim 1 in inner fat layer and sealing at surface of liposome.
3. sealing described in the claim 1 is characterized in that new liposome product can be used as antiinflammatory, rheumatism and analgesic drug product and is applied topically to skin, eyes, ear and oral cavity, also can be applied to arthrosis and the similar imbalance relevant with wound.
4. be encapsulated in the liposome with radiolabeled niflumic acid and as all derivants of synthesizing ester, these liposomees are prepared by following lipid: EPC (egg phosphatidylcholine), DSPC (distearoyl phosphatidylcholine), DMPC (dimyristoyl phosphatidyl choline), DPPC (dipalmitoyl phosphatidyl choline), HSPC (hydrogenated soya phosphatide phatidylcholine), the compositions that their mixture, the above-mentioned lipid mixtures of mentioning and they and cholesterol and ceramide are formed.
5. sealing of the niflumic acid described in the claim 1,2 and 4 and all synthesizing esters thereof is characterized in that the method sealed pharmaceutically active to be transferred to liposome interior (pH gradient) by this method.
6. claim 1,2,3, liposome product described in 4 and their pharmaceutical dosage form is characterized in that can alleviating the inflammation of skin after topical therapeutic is carried out in skin, eyes, ear and oral cavity.
7. the niflumic acid described in the claim 1,2 and 3 and all synthesizing esters sealing in liposome thereof, the dissolution experiment that it is characterized in that medicine is to carry out under the condition of pH=1-10.
8. claim 1, the niflumic acid described in 2,3 and 7 and all synthesizing esters sealing in liposome thereof, the dissolution experiment that it is characterized in that medicine is to carry out under the condition of pH=4.5.
9. claim 12, the niflumic acid described in 3,7 and 8 and all synthesizing esters sealing in liposome thereof, the dissolution experiment that it is characterized in that medicine is to carry out under the condition of pH=7.1.
10. claim 1,2,3, niflumic acid and all synthesizing esters thereof behind liposomal encapsulated described in 4,5, it is characterized in that adopting have high resolution, qualitative, quantitatively reach the physical and chemical parameter that technology such as calorimetric obtain the medicine lipid system.
11. the liposome product described in the claim 1, to it is characterized in that utilizing these products to carry out in mice, rat under 2-55 ℃ on one's body external/interior medicine dynamics research.
12. pharmaceutical dosage form is characterized in that it contains claim 1, the niflumic acid of sealing described in 2,3 and 4 and all synthesizing esters thereof.
13. be used for skin and the saturating pharmaceutical preparation of skin described in the claim 12, it contains the niflumic acid of sealing, and can be mixed with cream, gel, ointment, skin cream, skin suspension, the saturating obedient sheet of skin and dipping dressing.
14. be used for oral pharmaceutical preparation described in the claim 12, it contains the niflumic acid of sealing, and can be mixed with collutory, gingiva solution, oral mucosa suspension, oral mucosa drop, oral mucosa gel, gingiva gel, oral mucosa solution, washing liquid of oral cavity.
15. the pharmaceutical preparation that is used for eye described in the claim 12, it contains the niflumic acid of sealing, and can be mixed with the eye drop of eye cream, eye ointment, eye gel, solution of eyedrop, eye drip suspension, slow release.
16. the pharmaceutical preparation that is used for ear described in the claim 12, it contains the niflumic acid of sealing, and can be mixed with ear frost, ear gel, credulous unguentum, an ear solution, an ear suspension, an ear Emulsion with the gill tampon.
17. liposome product and the claim 12 described in the claim 1,13,14, the pharmaceutical preparation described in 15,16, it contains the niflumic acid of sealing.
CN99814948A 1998-12-24 1999-12-22 Liposomic niflumic acid-new transdermal anti-inflammatory medicine Pending CN1331592A (en)

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GR980100469 1998-12-24
GR98100469 1998-12-24

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EP (1) EP1140089A1 (en)
JP (1) JP2002533394A (en)
KR (1) KR20010089889A (en)
CN (1) CN1331592A (en)
AU (1) AU1673400A (en)
BR (1) BR9917006A (en)
CA (1) CA2357765A1 (en)
CZ (1) CZ20012240A3 (en)
GR (1) GR1003359B (en)
HU (1) HUP0104853A3 (en)
IL (1) IL143499A0 (en)
IS (1) IS5964A (en)
MX (1) MXPA01006462A (en)
NO (1) NO20013015D0 (en)
PL (1) PL349344A1 (en)
SK (1) SK7962001A3 (en)
WO (1) WO2000038681A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100377704C (en) * 2002-11-26 2008-04-02 吉里德科学公司 Liposomal formulations

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KR20060015534A (en) * 2003-04-25 2006-02-17 더 펜 스테이트 리서치 파운데이션 Method and system for systemic delivery of growth arresting, lipid-derived bioactive compounds
US20050255154A1 (en) 2004-05-11 2005-11-17 Lena Pereswetoff-Morath Method and composition for treating rhinitis
JP4791082B2 (en) * 2005-05-30 2011-10-12 株式会社クラレ Liposomes and topical skin preparations containing the same
JP4931369B2 (en) * 2005-05-31 2012-05-16 ポーラ化成工業株式会社 Liposomes and therapeutic compositions containing the same
PL1888033T3 (en) 2005-06-09 2014-09-30 Meda Ab Method and composition for treating inflammatory disorders
BR112013003658B1 (en) 2010-07-28 2022-02-22 Life Technologies Corporation Pharmaceutical composition comprising azide-modified isoprenoid fatty acid, carbohydrate and lipid, use of such components and method of inhibiting infectivity of a virus
US20120028335A1 (en) 2010-07-28 2012-02-02 Life Technologies Corporation Anti-viral azide-containing compounds
AU2013212068B2 (en) 2012-01-26 2018-02-15 Life Technologies Corporation Methods for increasing the infectivity of viruses

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US4528193A (en) * 1978-12-27 1985-07-09 A. Natterman & Cie. Gmbh Inflammation-preventing pharmaceutical composition of oral administration
EP0225162B1 (en) * 1985-11-27 1992-01-22 Ethicon, Inc. Inhibition of post-surgical adhesion formation by the topical administration of non-steroidal anti-inflammatory drug
EP0249561B1 (en) * 1986-06-12 1992-05-13 The Liposome Company, Inc. Compositions using liposome-encapsulated non-steroidal anti-inflammatory drugs
EP0825852B1 (en) * 1995-04-18 2004-07-07 Yissum Research Development Company Of The Hebrew University Of Jerusalem Liposome drug-loading method and composition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100377704C (en) * 2002-11-26 2008-04-02 吉里德科学公司 Liposomal formulations

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MXPA01006462A (en) 2002-06-04
HUP0104853A3 (en) 2003-05-28
HUP0104853A2 (en) 2002-05-29
NO20013015L (en) 2001-06-18
JP2002533394A (en) 2002-10-08
EP1140089A1 (en) 2001-10-10
CZ20012240A3 (en) 2001-11-14
IL143499A0 (en) 2002-04-21
NO20013015D0 (en) 2001-06-18
WO2000038681A1 (en) 2000-07-06
CA2357765A1 (en) 2000-07-06
GR1003359B (en) 2000-04-10
IS5964A (en) 2001-06-08
BR9917006A (en) 2001-10-30
AU1673400A (en) 2000-07-31
SK7962001A3 (en) 2002-02-05
PL349344A1 (en) 2002-07-15

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