WO2013178743A1 - Microcapsules contenant des rétinoïdes, leur procédé de préparation et compositions pharmaceutiques les contenant - Google Patents
Microcapsules contenant des rétinoïdes, leur procédé de préparation et compositions pharmaceutiques les contenant Download PDFInfo
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- WO2013178743A1 WO2013178743A1 PCT/EP2013/061183 EP2013061183W WO2013178743A1 WO 2013178743 A1 WO2013178743 A1 WO 2013178743A1 EP 2013061183 W EP2013061183 W EP 2013061183W WO 2013178743 A1 WO2013178743 A1 WO 2013178743A1
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- 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
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
- A61K31/402—1-aryl substituted, e.g. piretanide
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- 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
- A61K31/045—Hydroxy compounds, e.g. alcohols; Salts thereof, e.g. alcoholates
- A61K31/07—Retinol compounds, e.g. vitamin A
-
- 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
- A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
- A61K31/19—Carboxylic acids, e.g. valproic acid
- A61K31/192—Carboxylic acids, e.g. valproic acid having aromatic groups, e.g. sulindac, 2-aryl-propionic acids, ethacrynic acid
-
- 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
- A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
- A61K31/19—Carboxylic acids, e.g. valproic acid
- A61K31/20—Carboxylic acids, e.g. valproic acid having a carboxyl group bound to a chain of seven or more carbon atoms, e.g. stearic, palmitic, arachidic acids
- A61K31/203—Retinoic acids ; Salts thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/36—Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/42—Proteins; Polypeptides; Degradation products thereof; Derivatives thereof, e.g. albumin, gelatin or zein
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0014—Skin, i.e. galenical aspects of topical compositions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/5005—Wall or coating material
- A61K9/5021—Organic macromolecular compounds
- A61K9/5036—Polysaccharides, e.g. gums, alginate; Cyclodextrin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/5005—Wall or coating material
- A61K9/5021—Organic macromolecular compounds
- A61K9/5052—Proteins, e.g. albumin
- A61K9/5057—Gelatin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/5089—Processes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
- A61P17/02—Drugs for dermatological disorders for treating wounds, ulcers, burns, scars, keloids, or the like
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- A61P17/06—Antipsoriatics
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- A61P17/10—Anti-acne agents
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- A61P31/12—Antivirals
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- A61P37/08—Antiallergic agents
Definitions
- Microcapsules containing retinoids process for their preparation and compositions
- the invention relates to microcapsules comprising a pharmaceutical active agent selected from retinoids, to their processes of preparation, to a topical pharmaceutical composition comprising these microcapsules in a physiologically acceptable medium, and to its use in dermatology.
- Topical treatment of moderate acne is generally the preferred and first-line route of administration, whereas for moderate-to-severe acne, systemic treatment with or without topical therapy is recommended. .
- anti-acne agents such as antibiotics, retinoids, peroxides, each of them acting specifically on one of the physiopathological factors of acne which are hyperkeratinization, inflammation, colonization by P. Acnes and the hyperproduction of sebum.
- antibiotics such as antibiotics, retinoids, peroxides, each of them acting specifically on one of the physiopathological factors of acne which are hyperkeratinization, inflammation, colonization by P. Acnes and the hyperproduction of sebum.
- retinoids and peroxides are the most widely used.
- Microsponges® Adsorption of tretinoin on porous microspheres called Microsponges®.
- Microsponges® are patented porous microspheres in which the active ingredient is adsorbed in solid form at the pores thereof.
- Retin-A Micro® 0.1% and 0.04% approved respectively by the FDA in 1997 and 2002.
- a film-forming agent such as polyolprepolymer-2.
- This polymer makes it possible to maintain the active ingredient solubilized or dispersed on the upper layers of the limiting skin its penetration (Leyden, 1998).
- 3 products use this technology to improve tolerance of retinoids: two products with Tretinoin Avita® Gel 0.025% and Avita® Cream 0.025% approved in the US by the FDA in 1997 and 1998 and more recently Differin® Lotion 0.1% with adapalene.
- the two formulation technologies namely adsorption and film-forming agent, contribute to reducing retinoid-related skin irritation by modulating the kinetics of release of said retinoid when it is applied to the skin. Indeed, generally a delay effect is sought with kinetics of release and therefore of penetration into the skin slower compared to that of the same retinoid not adsorbed or present in a composition devoid of film-forming agent.
- the active agent is adsorbed on a support bringing it into contact with the other ingredients of the composition.
- the active agent can then be unstable within the composition, which can cause the instability of the composition.
- physical stability is meant a composition whose physical properties such organoleptic characters, pH, viscosity are stable over time and at different temperature conditions, 4 ° C, ambient temperature, 40 ° C.
- chemical stability is meant a composition in which the active ingredient is chemically stable over time and whatever the temperature condition: 4 ° C, room temperature, 40 ° C.
- the Applicant has thus discovered a new topical pharmaceutical composition containing an active agent, such as retinoids, held in microcapsules, which allows an improvement in the tolerance, and in particular a reduction of the irritation phenomena, while presenting a good physical and chemical stability of the retinoids and the composition as a whole.
- an active agent such as retinoids
- microcapsules according to the present invention in pharmaceutical compositions for topical use makes it possible to improve the chemical and physical stability of the final compositions, when the active agent degrades in the presence of other excipients present in the composition.
- compositions according to the invention containing these microcapsules also allow a controlled release of the active agent in two phases:
- a second release phase with kinetics identical to that of the same non-encapsulated retinoid is identical to that of the same non-encapsulated retinoid.
- the second phase has the advantage of not decreasing the amount of retinoid available to be absorbed into the skin and thus to reduce the effective therapeutic concentration of the retinoid.
- Figure 1 shows the percentage released amount of a retinoid preferred in the present invention ("compound A”) versus the square root of time for a reference gel and for a composition according to the invention.
- Figures 2 and 3 respectively show the amount of compound A expressed in ⁇ g cm 2 depending on the square root of time for a composition according to the invention.
- Figure 4 shows the results of a tolerance study performed on a reference gel, a placebo gel and compositions according to the invention.
- the present invention relates to microcapsules obtained by complex coacervation, which comprise a pharmaceutical active agent, for example a retinoid.
- Complex coacervation is an encapsulation technique. It makes it possible to obtain microcapsules or coacervates by forming a polymer layer around a lipophilic core that may be oil droplets or solid particles.
- Controlled release refers to a release of a regular dose of the asset over time.
- release phase is meant release kinetics with a definite release constant.
- the active agent in the microcapsules can be encapsulated either directly in the solid state in the form of solid particles, or dispersed in a fatty phase, or solubilized in a fatty phase.
- the encapsulation can be carried out either directly on the solid particles or on these same solid particles dispersed in a nonsolventing liquid phase.
- liquid phase is meant a non-solid phase at room temperature. This liquid phase is generally immiscible with water.
- the microcapsules are obtained using a polymer layer formed around the oil droplets containing the active agent or solid particles of active agent.
- This polymer layer consists of two hydrophilic biopolymers of opposite charges.
- the complex coacervation corresponds to the simultaneous desolvation of two water-soluble polyelectrolyte polymers of opposite charges, caused by a modification of the pH of the reaction medium and the induced electrostatic attraction of the two polymers.
- a crosslinking agent is added in order to solidify this coacervate and thus to form microcapsules.
- Microcapsule means objects whose size is of the micrometric order consisting of a membrane or envelope coating a central portion that can be liquid or solid at room temperature.
- the microcapsules function as reservoir systems, thus, the retinoid or encapsulated retinoids in the microcapsules are released by diffusion through the membrane or envelope surrounding this core or by breaking thereof due to shearing during application to the skin .
- microcapsules according to the invention are of small size, ideally less than 120 ⁇ " ⁇ , preferably less than 60 ⁇ and ideally around 20 ⁇ " ⁇ .
- the microcapsules comprise:
- An active pharmaceutical agent chosen from retinoids,
- a cationic hydrophilic polymer chosen from gelatins of type A, and
- microcapsules comprise:
- the area under the curve determined by applying to mouse ears, once a day for 4 consecutive weeks, 3 mg of a composition containing said microcapsules, so that the 3 "acid content 4-tert-butyl-4 '- (2-hydroxyethoxy) -4 "-pyrrolidin-1-yl- [1,1', 3 ', 1"] -terphenyl-4-carboxylic acid is 0.01% by weight relative to the total weight of the composition, and by measuring the thickness of the mouse ear from day 2 and daily to day 26, producing the corresponding graph showing the evolution of the thickness of the ear over time and by calculating the area under this curve, less than 2000 ⁇ per day
- the area under the curve is between 1000 and 2000 ⁇ per day.
- the microcapsules comprise:
- the area under the curve determined by applying to mouse ears, once a day for 4 consecutive weeks, 3 mg of a composition containing said microcapsules, so that the 3 "acid content 4-tert-butyl-4 '- (2-hydroxyethoxy) -4 "-pyrrolidin-1-yl- [1,1', 3 ', 1"] -terphenyl-4-carboxylic acid is 0.01% by weight relative to the total weight of the composition, and by measuring the thickness of the mouse ear from day 2 and daily to day 26, producing the corresponding graph showing the evolution of the thickness of the ear over time and by calculating the area under this curve, less than 4000 ⁇ per day, preferably in this third variant the area under the curve is between 3000 and 4000 ⁇ per day.
- retinoids that can be used in the context of the invention include, in particular, all-trans retinoic acid or tretinoin, 13-cis-retinoic acid or isotretinoin, acitretin, arotinoic acid, retinol, adapalene. , tazarotene, retinaldehyde, etretinate and the compounds protected in patent application WO2006 / 066978 such as 3 "-tert-butyl-4 '- (2-hydroxyethoxy) -4" -pyrrolidine acid.
- cationic hydrophilic polymer or cationic macromolecule is meant a cationically rendered polymer by a decrease in pH below the isoelectric point thereof.
- the positively charged macromolecule is advantageously selected from cationic biopolymers such as polypeptides, proteins or polysaccharides.
- the cationic polymer according to the present invention is type A gelatin.
- the anionic hydrophilic polymer is advantageously chosen from anionic biopolymers such as polypeptides, proteins or polysaccharides.
- biopolymers of the anionic polysaccharide type may be mentioned with As a non-limiting example, gum arabic or acacia, gellan gum sold under the name Kelcogel by Kelco, alginates such as sodium alginate sold under the name Satialgine® by Cargill; carrageenan such as those sold by the company IMCD as the Gelcarin ® and Viscarin ® (eg Gelcarin GP812N ®, Gelcarin GP379NF ®, Viscarin GP209NF ®).
- the anionic polymer according to the present invention is gum arabic.
- the key parameter of formation of the polymer layer is the variation of pH. Indeed, a decrease in pH below the isoelectric point of the hydrophilic polymer renders this cationic polymer which thereby interacts with the anionic hydrophilic polymer at this pH value. A pH corrector is thus introduced into the preparation.
- pH corrector in the present invention, an acid to reduce the pH of the preparation to the isoelectric point of the two polymers, so that they are of opposite charges and can form the coacervation complexes.
- the coacervation pH for this embodiment is from 4.9 to 5.0.
- This acid may be for example non-limiting acetic acid.
- the pH corrector is then removed at the end of the preparation of the microcapsules during successive washings.
- microcapsules according to the invention advantageously comprise at least one crosslinking agent, which allows the formation of covalent bonds between said hydrophilic anionic polymer and said cationic hydrophilic polymer.
- transglutaminase As crosslinking agent, transglutaminase, tannic acid, an aldehyde or a derivative thereof, such as formaldehyde or glutaraldehyde or mixtures thereof, may be mentioned without limitation.
- the crosslinking agent according to the present invention is glutaraldehyde.
- This crosslinking agent allows the formation of covalent amide bonds by the chemical reaction of the amino groups of the protein with the carboxylic groups of the polysaccharide. At the end of the reaction, the residual glutaraldehyde is removed by successive washing of the microcapsules.
- the microcapsules according to the invention comprise:
- gelatin type A gelatin type A
- Compound A in dispersed form in the microcapsules is preferably present at a concentration ranging from 0.001 to 1% and more preferably ranging from 0.1 to 0.7% by weight relative to the total weight of the microcapsules.
- Compound A in the form solubilized in the microcapsules is preferably present at a concentration ranging from 0.001 to 0.5% and more preferably ranging from 0.1 to 0.3% by weight relative to the total weight of the microcapsules.
- solvents of the compound A may be mentioned in particular triglycerides such as acid triglyceride mixture capric / caprylic, sold under the name Miglyol ® 812N, esters of fatty acids such as for example diisopropyl adipate, marketed under the trademark Crodamol ® DA by Croda, polyethoxylated fatty acids such as e.g., oleoyl macrogol-6 glycerides sold under the name Labrafil M1944CS ® by the company Gattefosse, fatty alcohols such as for example octyl dodecanol sold under the trademark Eutanol ® G, esters of fatty alcohols, glycols and derivatives thereof, glycol ethers such as, for example, PPG-15 stearyl ether sold under the name Arlamol ® PSE15 by Croda.
- triglycerides such as acid triglyceride mixture capric / caprylic, sold under
- microcapsules according to the invention comprise:
- gelatin type A gelatin type A
- Adapalene in dispersed form in the microcapsules is preferably present at a concentration ranging from 0.01 to 10% and more preferably ranging from 3 to 7% by weight relative to the total weight of the microcapsules.
- the microcapsules according to the invention may also contain a lipophilic phase (or fatty phase or oily phase) chosen from:
- This lipophilic phase may comprise, for example, vegetable, mineral, animal or synthetic oils, silicone oils, and mixtures thereof.
- mineral oil there may be mentioned for example paraffin oils of different viscosities such as Primol 352®, Marcol 152® sold by the company Univar.
- sweet almond oil Purus Amygdalus Dulcis - Sweet Almond oil supplied by Sictia, palm oil, soybean oil, sesame oil, sunflower oil , olive oil.
- Sophiderm® As animal oil, mention may be made of lanolin, squalene, fish oil, with as derivative perhydrosqualene sold under the name Sophiderm® by Sophim.
- an ester such as cetearyl isononanoate such as the product sold under the name Cetiol SN PH® by the company Chitinor France, diisopropyl adipate, and the product sold under the name Crodamol DA® by the company Croda isopropyl palmitate, such as the product sold under the name Crodamol IPP® by the company Croda, caprylic capric triglyceride such as Miglyol 812® sold by the company Univar.
- an ester such as cetearyl isononanoate such as the product sold under the name Cetiol SN PH® by the company Chitinor France, diisopropyl adipate, and the product sold under the name Crodamol DA® by the company Croda isopropyl palmitate, such as the product sold under the name Crodamol IPP® by the company Croda, caprylic capric triglyceride such as Miglyol 812
- silicone oil a dimethicone such as the product sold under the name Q7-9120 Silicone Fluid® with a viscosity of 20 cSt to 12500 is sold by the company Dow Corning, a cyclomethicone such as the product sold under the name ST- Cyclomethicone 5NF® also by Dow Corning.
- a lipophilic phase is propylene glycol monocaprylate (Capryol® 90) provided by Gattéfossé, propylene glycol laurate (Lauroglycol® FCC) supplied by Gattéfossé, Diisopropyl Adipate (Crodamol® DA) supplied by CRODA, PPG-15 stearyl ether (Arlamol® PS15E) supplied by CRODA, and Apricot Kernel Oil PEG-6 Ester or oleoyl macrogol-6 glycerides (Labrafil® M1944CS).
- the weight ratio polymer / oil that is to say the total amount by weight of cationic hydrophilic polymer added to that of polymer anionic hydrophilic on the total amount of lipophilic phase is advantageously between 0.2 and 0.8, preferably between 0.3 and 0.5.
- microcapsules may also contain additives to improve their stability. There may be mentioned additives such as suspending agents, gelling agents, preservatives.
- the term "suspending agent and gelling agent” means by way of non-limiting example Acrylates / C 10-30 Alkyl Acrylate Crosspolymer sold under the name Pemulen TR-1 or Pemulen TR-2 by the company Lubrizol, the carbomers sold under the name Ultrez 20®, Ultrez 10®, Carbopol 1382® or Carbopol ETD2020NF®, Carbopol® 981 or Carbopol® 980 by the company Lubrizol, polysaccharides with, by way of non-limiting examples, the xanthan gum such as Xantural180® sold by Kelco or Satiaxane® UCX 91 1 sold by Cargill, polyvinyl alcohol and Polyvinyl alcohol 40-88 sold by Merck, gellan gum sold under the name Kelcogel by Kelco company, guar gum, cellulose and its derivatives such as microcrystalline cellulose and sodium carboxymethyl cellulose sold under the name Avicel® CL-61 1 by the company FMC Biopolymer, hydroxy
- preservative is meant for example non-limiting, methyl paraben such as Nipagin M sold by Clariant, propyl paraben, benzaikonium chloride, phenoxyethanol sold under the name of Phenoxetol ® by Clariant, benzyl alcohol sold under benzyl alcohol by Merck, sodium benzoate sold under the name Probenz ® SP by Unipex, potassium sorbate sold under the name of potassium sorbate by VWR, benzoic acid sold under the name benzoic acid by VWR, 2-bromo-2-nitropropane-1, 3-diol sold under the name Bronopol ® by Jan Dekker International, chlorhexidine sold under the name of chlorhexidine digluconate 20% solution by Arnaud Pharmacy, chlorocresol and its derivatives, ethyl alcohol and diazolidinylurea.
- preservatives can be used alone or in combination to effectively protect formulas against bacterial contamination.
- microcapsules of the present invention are advantageously used to prepare pharmaceutical compositions for topical use.
- the present invention therefore also relates to a topical pharmaceutical composition containing the microcapsules described above, obtained by complex coacervation comprising a pharmaceutical active agent, such as retinoids.
- the active pharmaceutical ingredient used in the compositions according to the invention will be a retinoid.
- compositions according to the present invention may be in any of the galenical forms normally used for topical application, especially in the form of aqueous, aqueous-alcoholic or oily dispersions, suspensions, aqueous, anhydrous or lipophilic gels, emulsions (lotions, creams). or ointments) of liquid, semi-solid or solid consistency, obtained by dispersion of a fatty phase in an aqueous phase (oil-in-water emulsions) or conversely (water-in-oil emulsions) in the presence or absence of emulsifier , or even microemulsions.
- compositions according to the invention are in the form of emulsions (lotions, creams, creams without emulsifier), suspensions, gels, and more preferably in the form of gels and emulsions.
- the retinoid when the retinoid is adapalene, it is advantageously present at a concentration ranging from 0.001% to 10% by weight, and preferably from 0.01% to 5% by weight, relative to to the total weight of the composition.
- the retinoid when the retinoid is compound A, it is advantageously present in a concentration ranging from 0.00001 to 1% by weight, and preferably from 0.0001 to 0.1% by weight, relative to the total weight of the composition.
- composition according to the invention may also comprise one or more gelling agents.
- gelling agents can enter in the compositions according to the invention include the Acrylates / C10-30 Alkyl Acrylate Crosspolymer marketed under the trademark Pemulen ® TR-1 or Pemulen ® TR 2 by Lubrizol, the carbomers sold under the name Ultrez 20 ® , Ultrez ® 10, Carbopol ® 1382 or Carbopol ® ETD2020NF, Carbopol ® 981 or Carbopol ® 980 by Lubrizol, polysaccharides with as non-limiting examples of xanthan gum such as Xantural180® sold by Kelco or Satiaxane ® UCX 91 1 sold by Cargill, polyvinyl alcohol you that 40-88 polyvinyl alcohol sold by Merck, gellan gum sold under the name Kelcogel by Kelco, guar gum, cellulose and its derivatives such as microcrystalline cellulose and sodium carboxymethyl cellulose sold
- hydroxypropylmethylcellulose in particular ier the product sold under the name of Methocel ® E4M premium by Dow Chemical company or hydroxyethylcellulose, particularly the product sold under the name Natrosol HHX 250 ® by the company Aqualon, magnesium aluminum silicate family such as Veegum ® K sold by Vanderbilt company, family of acrylic polymers coupled to hydrophobic chains, such as PEG-150 / decyl / SMDI copolymer sold as Aculyn ® 44 (including polycondensate at least as components, a polyethylene glycol 150 or 180 moles of ethylene oxide, decyl alcohol and methylene bis (4-cyclohexylisocyanate) (SMDI), 35% by weight in a mixture of propylene glycol (39%) and water (26%) ), the family of modified starches such as modified potato starch sold under the name of Solanace Structure or their blends and gelling agents of the polyacrylamide family such as the mixture Sodium acryloy
- composition according to the invention may also comprise a fatty phase, which may be constituted, by way of non-limiting examples, of:
- mineral oils such as paraffin oils of different viscosities such as Marcol ® 152, Marcol ® 52 or Primol ® 352 sold by Univar
- mineral oils such as paraffin oils of different viscosities such as Marcol ® 152, Marcol ® 52 or Primol ® 352 sold by Univar
- vegetable oils among which may be mentioned sweet almond oil, palm oil, soybean oil, sesame oil, sunflower oil, hydrogenated castor oil, coconut oil,
- -One or more synthetic oils among which mention may be made Apricot Kernel Oil PEG-6 ester (Labrafil M1944CS ®), propylene glycol laurate (Lauroglycol FCC ®), propylene glycol monocaprylate (Capryol 90 ®) available from Gattefosse, of esters such as cetearyl isononanoate such as the product sold under the name Kollicream ® CL by BASF France, isopropyl palmitate such as the product sold under the name Crodamol ® IPP by Croda,
- One or more animal oils among which mention may be made of lanolin, squalene, fish oil, mink oil with as derivative squalane sold under the name Cosbiol® by Laserson.
- silicone oils improving the properties of the formula in the application, such as Cyclomethicone (St. Cyclomethicone 5NF ®) or dimethicone (Q7 9120 silicone fluid viscosity is 20 to 12,500 cSt Dow Corning)
- fatty phase thickeners of fatty alcohol such as cetyl alcohol (C70 CRODACOL ® supplied by Croda / Lanette ® 16 supplied by BASF but also Kolliwax CA ® supplied by BASF), cetearyl alcohol (CRODACOL ® 1618 provided by Croda, Tego Alkanol ® 1618 supplied by Evonik but also Kolliwax ® CSA supplied by BASF), stearyl alcohol (Crodacol ® S95 supplied by Croda, Kolliwax® SA supplied by BASF but also Tego Alkanol ® 18 supplied by Evonik) but also behenic alcohol (Lanette ® 22 supplied by BASF, Nacol ® 22-98 supplied by Sasol but also Behenyl Alcohol ® 65 80 supplied by Nikko Chems) or carnauba wax type supplied by Baerlocher but also beeswax sold under the name of Cerabeil Blanchie DAB ® supplied by Univar, glyce
- oils or fats may be added to the fatty phase of the composition in a manner varied by those skilled in the art to prepare a composition having the desired properties, for example in consistency or texture.
- the fatty phase when the composition according to the invention is in the form of an emulsion, the fatty phase may be present in a content ranging from 1 to 95% by weight relative to the total weight of the composition, preferably from 5 to 85% by weight. more preferably from 15 to 50% by weight relative to the total weight of the composition.
- the composition according to the invention may further contain additives or combinations of additives, such as:
- UV-A and UV-B filters are UV-A and UV-B filters
- additives may be present in the composition in contents ranging from 0 to 40% by weight relative to the total weight of the composition.
- the present invention also relates to the process for preparing the microcapsules described above.
- the process for preparing the microcapsules according to the invention comprises the following steps:
- the retinoid in solid form and encapsulated in the form of solid particles, it may be incorporated directly into the hydrophilic polymer solution, before the addition of 2 nd polymer. In the case where the retinoid is dispersed or solubilized in a lipophilic phase, it is incorporated into the mixtures of the two hydrophilic polymers of opposite charges.
- the subject of the present invention is also the use of a composition according to the invention for the treatment of one or more of the following pathologies:
- dermatological disorders related to a keratinization disorder relating to differentiation and cell proliferation in particular to treat vulgar, comedonal, polymorphic, rosacea acne, nodulocystic acne, conglobata, senile acnes, secondary acnes such as solar acne, medicated or professional;
- disorders of keratinization including ichthyosis, ichthyosiform states, lamellar ichthyosis, Darrier's disease, palmoplantar keratoderma, leukoplakia, pityriasis rubra pilaire and leucoplasiform states, cutaneous or mucosal lichen (oral) ;
- Skin disorders due to exposure to UV radiation as well as to repair or fight against aging of the skin be it photo-induced or chronological or to reduce pigmentations and actinic keratoses, or any pathologies associated with aging chronological or actinic, such as xerosis, pigmentations and wrinkles;
- dermatological disorders such as immune dermatoses such as lupus erythematosus, bullous immune diseases and collagen diseases, such as scleroderma;
- disorders of pigmentation such as hyperpigmentation, melasma, hypopigmentation or vitiligo
- cancerous or precancerous, cutaneous or mucosal states such as actinic keratoses, Bowen's disease, in-situ carcinomas, keratoacanthoma and skin cancers such as basal cell carcinoma (BCC), squamous cell carcinoma (SCC) and cutaneous lymphomas such as T-cell lymphoma
- BCC basal cell carcinoma
- SCC squamous cell carcinoma
- the pharmaceutical composition is preferentially intended for the treatment of: acne, ichthyosis, ichthyosiform states, palmoplantar keratosis, psoriasis.
- the present invention therefore also relates to a composition as described above, for its use for the treatment of the pathologies described above.
- the speeds and agitation times used are adjusted so as to obtain microcapsules of the desired size.
- Process example 1 obtaining microcapsules with encapsulated solid retinoid:
- the aqueous phase is heated in order to promote the solubilization of the two hydrophilic polymers.
- aqueous gum arabic containing the dispersed retinoid. Maintain agitation until homogenization of the mixture.
- Process example 2 obtaining microcapsules with retinoid dispersed or solubilized in a lipophilic phase:
- the aqueous phase is heated in order to promote the solubilization of the two hydrophilic polymers.
- aqueous solution of polymer Maintain agitation until homogenization of the mixture (emulsification) is complete.
- the amount of oil corresponds to the sum of the compounds of the lipophilic phase
- the polymer content corresponds to the sum of the quantities of anionic and cationic hydrophilic polymer used.
- adapalene microcapsules In order to obtain adapalene microcapsules, the following ingredients were used in the following proportions:
- Example 1 According to the method described in Example 1 the pH was adjusted to 4.9 with acetic acid. In order to allow the crosslinking, an amount of glutaraldehyde corresponding to 16% of the total amount of polymers used was added.
- adapalene microcapsules is as follows:
- Example 4 Microcapsule Composition of Compound A Encapsulated in Solid State
- Example 1 According to the method described in Example 1 the pH was adjusted to 4.9 with acetic acid. In order to allow the crosslinking, an amount of glutaraldehyde corresponding to 16% of the total amount of polymers used was added.
- composition of the microcapsules of compound A is as follows:
- Moisture content (% w / w Karl Fisher) 92.30
- Example 5 microcapsule compositions of adapalene dispersed in the fatty phase
- Example 2 According to the method described in Example 2 the pH was adjusted to 4.9 with acetic acid. In order to allow the crosslinking, an amount of glutaraldehyde corresponding to 16% of the total amount of polymers used was added.
- adapalene microcapsules is as follows:
- Example 6 Adaphalene microcapsule compositions dispersed in the fatty phase
- compositions (% w / w)
- Example 2 According to the method described in Example 2 the pH was adjusted to 4.9 with acetic acid. In order to allow the crosslinking, an amount of glutaraldehyde corresponding to 16% of the total amount of polymers used was added.
- composition of adapalene microcapsules is as follows:
- Example 7 Compositions of Microcapsules of Compound A Dispersed in the Fatty Phase
- compositions (% w / w)
- Example 2 According to the method described in Example 2 the pH was adjusted to 4.9 with acetic acid. In order to allow the crosslinking, an amount of glutaraldehyde corresponding to 16% of the total amount of polymers used was added.
- composition of the microcapsules of Compound A is as follows:
- Example 8 Microcapsule compositions of compound A solubilized in the fatty phase
- compositions (% w / w)
- Example 2 According to the method described in Example 2 the pH was adjusted to 4.9 with acetic acid. In order to allow the crosslinking, an amount of glutaraldehyde corresponding to 16% of the total amount of polymers used was added.
- composition of the microcapsules of compound A is as follows:
- Moisture content (% w / w Karl Fisher) 56.0 55.0 56.0
- Example 2 According to the method described in Example 2 the pH was adjusted to 4.9 with acetic acid. In order to allow the crosslinking, an amount of glutaraldehyde corresponding to 16% of the total amount of polymers used was added.
- composition of the microcapsules of compound A is as follows:
- Example 10 Microcapsule compositions of compound A solubilized in the fatty phase
- Example 2 According to the method described in Example 2 the pH was adjusted to 4.9 with acetic acid. In order to allow the crosslinking, an amount of glutaraldehyde corresponding to 16% of the total amount of polymers used was added.
- composition of the microcapsules of compound A is as follows:
- Moisture content (% w / w Karl Fisher) 55.0 54.5 59.0
- Oil content (% w / w) 32.54 34.80 28.12
- Example 1 Composition and stability of a gel containing microcapsules of adapalene dispersed in a fatty phase
- composition of type comprising microcapsules No. 5 was carried out and followed in stability for 3 months and under 3 temperature conditions: + 4 ° C., ambient temperature and 40 ° C. At each score, the following characterizations were performed:
- the macroscopic observation is performed on the formulation in its original packaging.
- the pH measurement is taken in the formulation.
- the measurement of the viscosity is carried out using a Brookfield RVDVII + type apparatus.
- the operating conditions such as the choice of needle and speed may vary.
- the measurements are carried out after 1 min, in the original packaging (250 ml wide opening jars).
- the titer of the adapalene is checked by HPLC after preparation (TO) and after 1 month, 2 months, 3 months, at the 2 storage temperatures: ambient temperature and 40 ° C:
- the stability results show that the gel comprising adapalene No. 5 microcapsules is physically and chemically stable.
- Example 12 Composition and stability of a gel containing microcapsules of compound A dispersed in a fatty phase
- composition of type comprising microcapsules No. 8 was carried out and followed in stability for 3 months and under 3 temperature conditions: + 4 ° C., ambient temperature and 40 ° C. At each score, the following characterizations were performed:
- the macroscopic observation is performed on the formulation in its original packaging.
- the pH measurement is taken in the formulation.
- the measurement of the viscosity is carried out using a Brookfield RVDVII + type apparatus.
- the operating conditions such as the choice of needle and speed may vary.
- the measurements are carried out after 1 min, in the original packaging (250 ml wide opening jars).
- the title of the compound A is checked by HPLC after preparation (TO) and after 1 month, 2 months, 3 months, at the 2 storage temperatures: ambient temperature and 40 ° C:
- EXAMPLE 13 Composition and stability of a gel containing microcapsules of compound A solubilized in a fatty phase
- composition of type comprising microcapsules No. 14 was carried out and followed in stability for 3 months and under 3 temperature conditions: + 4 ° C., ambient temperature and 40 ° C. At each score, the following characterizations were performed:
- the macroscopic observation is performed on the formulation in its original packaging.
- the pH measurement is taken in the formulation.
- the measurement of the viscosity is carried out using a Brookfield RVDVII + type apparatus.
- the operating conditions such as the choice of needle and speed may vary.
- the measurements are carried out after 1 min, in the original packaging (250 ml wide opening jars).
- the title of the compound A is checked by HPLC after preparation (TO) and after 1 month, 2 months, 3 months, at the 2 storage temperatures: ambient temperature and 40 ° C:
- EXAMPLE 14 Composition and Stability of a Cream Containing Microcapsules of Compound A Solubilized in a Fatty Phase
- composition of type comprising microcapsules No. 16 was carried out and followed in stability for 3 months and under 3 temperature conditions: + 4 ° C., ambient temperature and 40 ° C. At each score, the following characterizations were performed:
- the macroscopic observation is performed on the formulation in its original packaging.
- the pH measurement is taken in the formulation.
- the measurement of the viscosity is carried out using a Brookfield RVDVII + type apparatus. Depending on the physical appearance of the composition, the operating conditions such as the choice of needle and speed may vary. The measurements are carried out after 1 min, in the original packaging (250 ml wide opening jars).
- the title of the compound A is checked by HPLC after preparation (TO) and after 1 month, 2 months, 3 months, at the 2 storage temperatures: ambient temperature and 40 ° C:
- the kinetics of release of compound A from the microcapsules was evaluated on 24-well microplates (Corning HTS Transwell plate) having a polyester membrane. On this membrane, about 200 mg of the composition to be studied has been deposited.
- the receiving phase is composed of a propylene glycol / ethanol mixture (20/80) allowing a good solubilization of Compound A.
- Figure 1 shows the amount released as a percentage of compound A versus the square root of time from the reference gel and the composition of Example 13.
- Figures 2 and 3 respectively show the amount of compound A expressed in ⁇ / ⁇ 2 according to the square root of time. From the curves obtained, the linear regressions were determined between 0 and 2 hours and between 2 and 24 hours so as to calculate the release constants for each time interval.
- the kinetics of release of compound A from the microcapsules is about 3 times slower compared to that of unencapsulated solubilized Compound A.
- the encapsulation of compound A from the system as proposed by the invention has the advantage of reducing any risk of irritation of Compound A during the first hours after application because the amount of retinoid released is lower. As a result, the absorption is less important and the risk of irritation diminished. On the other hand, after the first hours following the application, the fact of obtaining a same release kinetics over long times shows that Compound A is available to be absorbed by the cutaneous tissues.
- the phenomena of irritation of the compound A can therefore be modulated without affecting the absorption profile of Compound A after 2 hours of application.
- microcapsules as defined by the invention also have the advantage of having a delayed effect on the kinetics of release of compound A of short duration.
- Example 16 Tolerability study: Evaluation of the pro-inflammatory effect of the formulations after repeated application on the ear of BALBB / C mice
- the purpose of this study is to study the irritating effect of compound A encapsulated in microcapsules obtained by coacervation according to the invention.
- mice Repeated application of 3 mg of each test composition was administered on the ear of the mice on day 1 for 4 weeks. Clinical observations and measurements of mouse ear thickness directly related to inflammation are performed from day 2 and daily until day 26.
- the results are expressed by calculating the area under the curve obtained from the graph representing the evolution of the thickness of the ear during the study.
- a gel-type placebo composition was made and from which a quantity of microcapsules of Compound A was introduced so as to obtain a Compound A content of 0.01% by weight of the weight of the final composition.
- the microcapsules tested correspond to those described in Examples No. 8; No. 9; No. 13; No. 14; No. 16 and No. 18.
- the composition of the type of placebo gel is as follows:
- a glyco-alcoholic reference gel in which Compound A is solubilized but not encapsulated was used.
- Figure 4 shows the different values of area under the curve obtained for each composition tested.
- microcapsules of compound A obtained by coacervation make it possible to reduce the irritation to a greater or lesser extent depending on the presentation of compound A: dispersed or solubilized within these microcapsules.
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Abstract
Description
Claims
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2874375A CA2874375A1 (fr) | 2012-06-01 | 2013-05-30 | Microcapsules contenant des retinoides, leur procede de preparation et compositions pharmaceutiques les contenant |
| EP13726765.4A EP2854775A1 (fr) | 2012-06-01 | 2013-05-30 | Microcapsules contenant des rétinoïdes, leur procédé de préparation et compositions pharmaceutiques les contenant |
| JP2015514504A JP2015518031A (ja) | 2012-06-01 | 2013-05-30 | レチノイド含有マイクロカプセル、その調製方法、及び当該レチノイド含有マイクロカプセルを含む医薬組成物 |
| AU2013269566A AU2013269566A1 (en) | 2012-06-01 | 2013-05-30 | Microcapsules containing retinoids, method for preparing same, and pharmaceutical compositions containing same |
| US14/404,893 US20150190372A1 (en) | 2012-06-01 | 2013-05-30 | Microcapsules containing retinoids, method of preparing same, and pharmaceutical compositions containing same |
| RU2014152994A RU2014152994A (ru) | 2012-06-01 | 2013-05-30 | Содержащие ретиноиды микрокапсулы, способ их получения и содержащие их фармацевтические композиции |
| KR1020147037137A KR20150014522A (ko) | 2012-06-01 | 2013-05-30 | 레티노이드 함유 마이크로캡슐, 이의 제조 방법 및 이를 함유하는 약학 조성물 |
| MX2014014590A MX2014014590A (es) | 2012-06-01 | 2013-05-30 | Microcapsulas que contienen retinoides, su procedimiento de preparacion y composiciones farmaceuticas que los contienen. |
| BR112014029869-6A BR112014029869A2 (pt) | 2012-06-01 | 2013-05-30 | microcápsula, composição farmacêutica, processos de preparação de microcápsulas e uso de uma composição |
| CN201380040734.6A CN104661656A (zh) | 2012-06-01 | 2013-05-30 | 含有类维生素a的微胶囊、制备其的方法以及含有其的药物组合物 |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261654723P | 2012-06-01 | 2012-06-01 | |
| FR1255108A FR2991172A1 (fr) | 2012-06-01 | 2012-06-01 | Compositions pharmaceutiques topiques comprenant des microcapsules |
| US61/654723 | 2012-06-01 | ||
| FR1255108 | 2012-06-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013178743A1 true WO2013178743A1 (fr) | 2013-12-05 |
Family
ID=46889199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2013/061183 Ceased WO2013178743A1 (fr) | 2012-06-01 | 2013-05-30 | Microcapsules contenant des rétinoïdes, leur procédé de préparation et compositions pharmaceutiques les contenant |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US20150190372A1 (fr) |
| EP (1) | EP2854775A1 (fr) |
| JP (1) | JP2015518031A (fr) |
| KR (1) | KR20150014522A (fr) |
| CN (1) | CN104661656A (fr) |
| AU (1) | AU2013269566A1 (fr) |
| BR (1) | BR112014029869A2 (fr) |
| CA (1) | CA2874375A1 (fr) |
| FR (1) | FR2991172A1 (fr) |
| MX (1) | MX2014014590A (fr) |
| RU (1) | RU2014152994A (fr) |
| WO (1) | WO2013178743A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015116709A1 (fr) * | 2014-01-28 | 2015-08-06 | Allergan, Inc. | Formulations topiques de rétinoïdes, et procédés d'utilisation |
| RU2852170C1 (ru) * | 2024-11-06 | 2025-12-04 | Общество с ограниченной ответственностью "Умные капсулы" | Способ получения суспензии многоядерных микрокапсул-коацерватов |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10933018B2 (en) | 2015-10-30 | 2021-03-02 | Timber Pharmaceuticals Llc | Isotretinoin formulations and uses and methods thereof |
| CN105663081B (zh) | 2015-12-30 | 2019-08-02 | 大连医诺生物股份有限公司 | 微囊化β-丙氨酸 |
| KR102108153B1 (ko) * | 2017-07-05 | 2020-05-07 | (주)동구바이오제약 | 생체 이용률 및 안정성이 개선된 레티노이드를 함유하는 약제학적 조성물 |
| CA3069359C (fr) * | 2017-07-12 | 2023-01-10 | Sol-Gel Technologies Ltd. | Compositions comprenant de la tretinoine encapsulee |
| KR102218427B1 (ko) * | 2017-09-20 | 2021-02-22 | 차의과학대학교 산학협력단 | 단백질 약물을 포함하는 코아세르베이트 조성물 및 이를 포함하는 창상 치료제 |
| CN108451787B (zh) * | 2018-05-23 | 2020-01-07 | 上海格兰化妆品有限公司 | 一种包埋维生素a醇的纳米脂质载体及其制备方法 |
| CN111329851A (zh) * | 2018-06-08 | 2020-06-26 | 中国医学科学院皮肤病医院 | 阿达帕林和抗增殖药物联合在制备预防或治疗血液系统肿瘤药物中的应用 |
| CN114929678B (zh) * | 2019-11-29 | 2023-08-15 | 石家庄迪斯凯威医药科技有限公司 | 一种取代的间三联苯类化合物及其药物组合物和用途 |
| CN110917071B (zh) * | 2019-12-23 | 2022-11-08 | 万华化学集团股份有限公司 | 核壳结构柔珠、其制备方法及包括其的个人护理用品 |
| CN111378185B (zh) * | 2020-03-31 | 2022-11-29 | 暨南大学 | 一种仿生蛋白多糖类纳米材料及其制备方法与应用 |
| AU2021274996B2 (en) | 2020-05-22 | 2026-04-09 | Sol-Gel Technologies Ltd. | Stabilized microcapsules, method of their preparation and uses thereof |
| CN113876690A (zh) * | 2021-07-16 | 2022-01-04 | 惠州市九惠制药股份有限公司 | 一种含醋酸地塞米松的新型制剂的制备及检测方法 |
| CN113818240A (zh) * | 2021-09-23 | 2021-12-21 | 烟台明远创意生活科技股份有限公司 | 一种大麻二酚整理液及大麻二酚功能面料的整理工艺 |
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-
2012
- 2012-06-01 FR FR1255108A patent/FR2991172A1/fr active Pending
-
2013
- 2013-05-30 US US14/404,893 patent/US20150190372A1/en not_active Abandoned
- 2013-05-30 EP EP13726765.4A patent/EP2854775A1/fr not_active Withdrawn
- 2013-05-30 AU AU2013269566A patent/AU2013269566A1/en not_active Abandoned
- 2013-05-30 WO PCT/EP2013/061183 patent/WO2013178743A1/fr not_active Ceased
- 2013-05-30 KR KR1020147037137A patent/KR20150014522A/ko not_active Withdrawn
- 2013-05-30 RU RU2014152994A patent/RU2014152994A/ru not_active Application Discontinuation
- 2013-05-30 BR BR112014029869-6A patent/BR112014029869A2/pt not_active IP Right Cessation
- 2013-05-30 CN CN201380040734.6A patent/CN104661656A/zh active Pending
- 2013-05-30 MX MX2014014590A patent/MX2014014590A/es unknown
- 2013-05-30 JP JP2015514504A patent/JP2015518031A/ja active Pending
- 2013-05-30 CA CA2874375A patent/CA2874375A1/fr not_active Abandoned
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015116709A1 (fr) * | 2014-01-28 | 2015-08-06 | Allergan, Inc. | Formulations topiques de rétinoïdes, et procédés d'utilisation |
| RU2852170C1 (ru) * | 2024-11-06 | 2025-12-04 | Общество с ограниченной ответственностью "Умные капсулы" | Способ получения суспензии многоядерных микрокапсул-коацерватов |
Also Published As
| Publication number | Publication date |
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| JP2015518031A (ja) | 2015-06-25 |
| CN104661656A (zh) | 2015-05-27 |
| KR20150014522A (ko) | 2015-02-06 |
| US20150190372A1 (en) | 2015-07-09 |
| FR2991172A1 (fr) | 2013-12-06 |
| AU2013269566A1 (en) | 2015-01-15 |
| BR112014029869A2 (pt) | 2019-08-20 |
| MX2014014590A (es) | 2015-03-03 |
| CA2874375A1 (fr) | 2013-12-05 |
| RU2014152994A (ru) | 2016-07-27 |
| EP2854775A1 (fr) | 2015-04-08 |
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