WO2014173941A2 - Procédé d'obtention d'un gel stable d'acide hyaluronique et d'une forme libre de vitamine c et/ou de l'un de ses sels - Google Patents
Procédé d'obtention d'un gel stable d'acide hyaluronique et d'une forme libre de vitamine c et/ou de l'un de ses sels Download PDFInfo
- Publication number
- WO2014173941A2 WO2014173941A2 PCT/EP2014/058229 EP2014058229W WO2014173941A2 WO 2014173941 A2 WO2014173941 A2 WO 2014173941A2 EP 2014058229 W EP2014058229 W EP 2014058229W WO 2014173941 A2 WO2014173941 A2 WO 2014173941A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vitamin
- gel
- hyaluronic acid
- acid
- salt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/365—Lactones
- A61K31/375—Ascorbic acid, i.e. vitamin C; Salts thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/715—Polysaccharides, i.e. having more than five saccharide radicals attached to each other by glycosidic linkages; Derivatives thereof, e.g. ethers, esters
- A61K31/726—Glycosaminoglycans, i.e. mucopolysaccharides
- A61K31/728—Hyaluronic acid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
- A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
-
- 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
- A61K47/02—Inorganic compounds
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/04—Dispersions; Emulsions
- A61K8/042—Gels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/23—Sulfur; Selenium; Tellurium; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/67—Vitamins
- A61K8/676—Ascorbic acid, i.e. vitamin C
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/73—Polysaccharides
- A61K8/735—Mucopolysaccharides, e.g. hyaluronic acid; Derivatives thereof
-
- 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
- A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
-
- 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
- A61K9/06—Ointments; Bases therefor; Other semi-solid forms, e.g. creams, sticks, gels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P19/00—Drugs for skeletal disorders
- A61P19/02—Drugs for skeletal disorders for joint disorders, e.g. arthritis, arthrosis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P27/00—Drugs for disorders of the senses
- A61P27/02—Ophthalmic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
- A61P29/02—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID] without antiinflammatory effect
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/08—Anti-ageing preparations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/52—Stabilizers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/59—Mixtures
- A61K2800/592—Mixtures of compounds complementing their respective functions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/74—Biological properties of particular ingredients
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/80—Process related aspects concerning the preparation of the cosmetic composition or the storage or application thereof
- A61K2800/805—Corresponding aspects not provided for by any of codes A61K2800/81 - A61K2800/95
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/80—Process related aspects concerning the preparation of the cosmetic composition or the storage or application thereof
- A61K2800/91—Injection
Definitions
- the invention relates to a method for obtaining an aqueous composition of hyaluronic acid or at least one of its salts called hyaluronate, crosslinked or not, and vitamin C or a salt called ascorbate injection, under a stable hydrogel form which can be stored without significant degradation for a period of several months and which is preferably not subject to yellowing. More particularly, the invention relates to an aqueous composition of crosslinked or non-crosslinked hyaluronic acid, or a salt thereof and vitamin C in its acid form or its ascorbate equivalent from a vitamin C salt, injectable, in the form of hydrogel obtainable by said method.
- composition according to the invention can be used in particular for aesthetic and / or therapeutic purposes.
- Hyaluronic acid compositions are generally used in the form of an injectable gel.
- the hyaluronic acid gel can be injected under the skin to allow the filling of wrinkles and fine lines, the remodeling of the face or lips.
- These gels are also used in therapeutic medicine and find applications particularly in the field of ophthalmology for which the gel can moisturize the eye or relieve the cornea after a cornea transplant, glaucoma or cataract.
- the gel can also be injected into the joints to reduce joint pain, especially in rheumatology.
- additives can also bring complementary effects that improve those of hyaluronic acid injection treatment.
- Such additives can, for example, prolong the duration of the desired effect, optimize the distribution of the injected product, and limit the pain during injection, provide a complementary action, including anti-ecchymotic, antioxidant or stimulating the production of hyaluronic acid or collagen.
- L-ascorbic acid or vitamin C is particularly interesting because of its antioxidant, anti-aging and collagen-promoting properties.
- the degradation of the hyaluronic acid and vitamin C gel results in a significant loss of viscosity and viscoelasticity of the gel sign of the beginning of degradation before complete degradation into a liquid with the appearance of an intense yellow coloration.
- WO 95/29683 and FR 2 900 575 describe stability problems of hyaluronic acid gels when combined with vitamin C, or salts thereof, in a free form.
- ascorbic acid esters, especially palmitate, or other vitamin C derivatives for example fatty acid ascorbates, ascorbic acid 2-glucoside, or ascorbyl phosphate, provides less efficacy than the direct use of vitamin C or its salts in a free form.
- an injectable gel comprising hyaluronic acid and vitamin C and / or one of its salts, in a free form and which is stable enough to be thermally sterilized in an autoclave, it is that is, the gel does not exhibit a significant loss of viscosity and / or viscoelasticity, does not degrade in a liquid form, and does not yellow.
- an object of the invention is to implement a process for obtaining an aqueous gel comprising hyaluronic acid or at least one of its salts called hyaluronate, crosslinked or not, vitamin C in a free form and / or one of its salts called ascorbate and a stabilizing agent selected from metabisulfites.
- Another object of the invention in at least one of its embodiments, is to provide an aqueous gel comprising hyaluronic acid or the corresponding hyaluronate, crosslinked or not, and vitamin C in a free form and or one of its salts called ascorbate.
- the gel must be stable enough to be sterilized by autoclaving and conditioned to be stored for several months, preferably at least 6 months without significant degradation of the gel or its components, especially vitamin C.
- the invention in at least one of its embodiments, is also intended to combine the benefits of a hyaluronic acid injection with the antioxidant, anti-aging and promoter effects of vitamin C collagen and / or one of its salts, used in free form.
- the invention also aims at the use in the cosmetic field of a formula containing a hyaluronic acid in acid or salt form, crosslinked or not, vitamin C and / or one of its salts, in particular sodium ascorbate, in a free form, that is to say in the form of acid or ascorbate, and a stabilizing agent selected from metabisulfites.
- Another object of the invention is the use for aesthetic, reconstructive or therapeutic purposes of an injectable gel comprising a hyaluronic acid in the form of acid or salt, crosslinked or otherwise, vitamin C or a its salts, especially sodium ascorbate, in a free form, and a stabilizing agent selected from metabisulfites.
- the invention relates to a method for manufacturing an aqueous gel comprising hyaluronic acid, vitamin C and a stabilizing agent chosen from metabisulfites.
- such a process comprises the following steps: a) preparation of a mixture comprising hyaluronic acid and / or one of its salts, crosslinked or otherwise, with a molar mass of between 1000 Da and 10 MDa from 0.1 to 20.0% by weight of vitamin C in its acid form, or its ascorbate equivalent derived from a vitamin C salt, from 0.01 to 1.00% by weight of stabilizing agent chosen from metabisulfites and a solution aqueous added so that the hyaluronic acid content is between 0.01 and 100 mg / ml to form a hydrogel. b) Degassing the mixture before the forming hydrogel fully swells.
- the general principle of the invention is based on the addition of a stabilizing agent chosen from metabisulphites, said addition being combined with a step of degassing the composition during the preparation of the gel.
- a stabilizing agent chosen from metabisulphites
- the inventors have surprisingly found that the stability of the gel, that is to say, its non-degradation over a period of at least 6 months, or during autoclaving and the absence of a yellow coloring are obtained when the addition of the stabilizing agent is combined with a degassing step of the composition during the preparation of the gel.
- Said stability corresponding to a simultaneous stability of the hyaluronic acid gel as such through its viscoelastic properties but also vitamin C, which also results in an absence of yellowing of said gel.
- a stabilizing agent is used in the composition of the gel.
- This stabilizing agent must be compatible with medical or cosmetic applications, especially for injections.
- Said agent is chosen from the group of reducing agents and antioxidants employed at a concentration of between 0.01 and 1% by weight and preferably between 0.08 and 1%.
- This agent is chosen from metabisulfites, preferably from alkali and alkaline earth metabisulfites, more preferably from alkali metabisulfites, most preferably from potassium and sodium metabisulphites.
- the stabilizing agent is sodium metabisulfite.
- the invention is based on an entirely new and inventive approach to combine the use of a stabilizing agent in the form of metabisulfite with a degassing step.
- a stabilizing agent in the form of metabisulfite with a degassing step.
- concentrations of between 0.08% by weight and 1% by weight of stabilizing agent do not make it possible to avoid the yellow coloration of the gel.
- concentrations of between 0.08% by weight and 1% by weight of stabilizing agent do not make it possible to avoid the yellow coloration of the gel.
- the inventors have solved these problems of degradation and coloration by preparing a gelled aqueous composition comprising hyaluronic acid or one of its salts, crosslinked or otherwise, and whose molar mass is between 1000 Da and 10 MDa (10 7 Da) and preferentially between 50 KDa and 5 MDa or even more preferably between 200 KDa and 3 MDa, an excessively high molar mass making gel handling difficult, whereas for a molar mass of less than 1000 Da the composition would be too liquid .
- the gelled aqueous composition also comprises from 0.1 to 20.0% and preferably from 2 to 10% by weight of vitamin C in its acid form, or its ascorbate equivalent from a vitamin C salt, of 0.01 to 1.00%, of preferably between 0.08 and 1.00% by weight, of a stabilizing agent chosen from metabisulfites, preferably from alkali metal and alkaline earth metabisulfites, more preferably from alkali metabisultites, most preferably from sodium metabisulfites. and potassium, preferably the stabilizing agent is sodium metabisulfite, and an aqueous solution added so that the hyaluronic acid content is between 0.01 and 100 mg / ml and preferably between 2 and 50 mg / ml.
- a stabilizing agent chosen from metabisulfites, preferably from alkali metal and alkaline earth metabisulfites, more preferably from alkali metabisultites, most preferably from sodium metabisulfites. and potassium, preferably the stabilizing agent is
- hyaluronic acid will be used to describe in an undifferentiated manner the cross-linked or non-cross-linked hyaluronic acid, or the corresponding hyaluronate.
- the hyaluronic acid salt is a sodium salt.
- crosslinked hyaluronic acid makes it possible to obtain a viscosity and a higher stability.
- uncrosslinked hyaluronic acid makes it possible to obtain more fluid compositions.
- the crosslinking agents are preferably diols, in particular they may be chosen from 1,4-butanediol, diglycidyl ether, 1,4-bis (2,3-epoxypropoxy) butane, 1,4-bisglycidyloxybutane, 1,2-bis (2,3-epoxypropoxy) ethylene and 1- (2,3-epoxypropyl) -2,3-epoxycyclohexane.
- Hyaluronic acid is marketed under the brand names Juvederm by Allergan, or Restylane by Medicis Aesthetics.
- vitamin C should be interpreted as covering the free forms of ascorbic acid, ie ascorbic acid in laevorotatory acid form or one of its salts called ascorbate.
- aqueous phase used for the preparation of the hyaluronic acid gel may be chosen by those skilled in the art on the basis of its general knowledge, in order to be compatible with the applications of the injectable gel.
- the injectable gel should preferably have a pH that is not too acidic to be compatible with the different applications of the gel.
- the aqueous phase used according to the invention is preferably an aqueous solution buffered at a pH of between about 5 and about 8.
- the aqueous phase may contain any useful additive known to those skilled in the art and compatible with the application, allowing for example to improve the gel, to increase its resistance, to avoid the pain with the injection.
- degassing of the mixture before the formation hydrogel completely swells it is meant that the acid Hyaluronic does not usually swell instantly.
- the process according to the invention is such that the mixture of step a) comprises from 2 to 10% by weight of vitamin C in acid form and / or in the form of at least one ascorbic acid salt. and from 0.08 to 1% by weight of stabilizing agent selected from metabisulfites.
- the process according to the invention is such that, during step a) of mixing, hyaluronic acid and / or one of its salts, crosslinked or not, vitamin C in acid form or its ascorbate equivalent from a vitamin C salt and the stabilizing agent selected from metabisulfites, are used in a solid form, and then mixed with the aqueous solution.
- step a) of mixing, hyaluronic acid and / or one of its salts, crosslinked or not, vitamin C in acid form or its ascorbate equivalent from a vitamin C salt and the stabilizing agent selected from metabisulfites are used in a solid form, and then mixed with the aqueous solution.
- the process according to the invention is such that an aqueous solution comprising vitamin C, in acid form or its ascorbate equivalent derived from a vitamin C salt, and the stabilizer selected from metabisulfites is prepared beforehand, then is then used to swell a gel of hyaluronic acid and / or a salt thereof, crosslinked or not, previously prepared, but partially inflated.
- an aqueous solution of vitamin C in the form of an acid or its ascorbate equivalent from a vitamin C salt is prepared beforehand and is then used to swell a hyaluronic acid gel and / or one of its salts, crosslinked or not, previously prepared, but partially swollen comprising a stabilizer selected from metabisulfites.
- partially inflated is meant the fact that the hyaluronic acid gel can still "absorb" the added aqueous phase to form a viscoelastic gel according to the intended application without liquefying, dispersing or revealing a supernatant
- the process according to the invention is such that the degassing step is carried out by ultrasound and / or alternating suction cycle and addition of inert gas, preferably by alternating cycle of aspiration and addition of nitrogen.
- the process according to the invention is such that a base, preferably a carbonate or a hydrogencarbonate, more preferably a hydrogencarbonate, most preferably sodium hydrogencarbonate, is added to the mixture.
- a base preferably a carbonate or a hydrogencarbonate, more preferably a hydrogencarbonate, most preferably sodium hydrogencarbonate
- a base such as a carbonate or a hydrogencarbonate, preferably a hydrogencarbonate in the mixture comprising vitamin C makes it possible to form the corresponding ascorbate in situ.
- a base such as a carbonate or a hydrogencarbonate, preferably a hydrogencarbonate
- the presence of hydrogencarbonate or carbonate, preferably hydrogen carbonate, and acid in aqueous solution causes a release of carbon dioxide, which improves the degassing of the composition.
- a salt of ascorbic acid such as a sodium salt.
- This salt can be introduced in the state or formed in situ by the addition of a base such as sodium hydrogencarbonate on ascorbic acid, which, in this second case, allows the release of carbon dioxide during the acid / base reaction and also contributes to the degassing of the solution.
- the method according to the invention is such that at least one additive selected from the group consisting of anesthetic agents, anti-ecchymotic agents, hyaluronic acid production stimulating agents and agents stimulating the Collagen production is added to the mixture.
- the process according to the invention is such that during step a) of mixing, hyaluronic acid and / or one of its salts, crosslinked or not, vitamin C in acid form or its equivalent in ascorbate from a vitamin C salt, the stabilizing agent chosen from metabisulfites, and carbonate or hydrogencarbonate, preferentially 1 'hydrogencarbonate, are used in a solid form and then mixed with the aqueous solution.
- the optional additive is also solid unless it is previously present in the gel or in the aqueous phase.
- solid for the preparation facilitates their handling, allows easier storage of unstable compounds such as vitamin C which is stable in the solid state, but not in solution, but also allows easier degassing.
- the process according to the invention is such that during step a) of mixing the aqueous solution is prepared beforehand and comprises vitamin C in the form of acid or its ascorbate equivalent from a vitamin C salt, the stabilizing agent selected from metabisulfites, the optional additive and the hydrogencarbonate; the aqueous solution is then used to swell a gel of hyaluronic acid and / or one of its salts, crosslinked or not, previously prepared, but partially inflated.
- the process according to the invention is such that it comprises the following additional steps: c) maintaining the gel thus obtained under an inert atmosphere; d) allow the gel to swell completely; e) sterilize the gel.
- the method according to the invention is such that it comprises an additional step f) of conditioning the gel, said step f) being subsequent to step e) or interposed between steps d) and e), preferably additional step f) is interposed between steps d) and e).
- this implementation allows for example a use and marketing after packaging in sterile syringes.
- the method according to the invention is such that the gel is sterilized by autoclave.
- this sterilization autoclave has the advantage of being less complex and easier to implement.
- the method according to the invention makes it possible to obtain a gel which is stable enough to be sterilized in an autoclave and which also has stability over time, this property resulting in a non-liquefaction of the gel and an absence of yellowing.
- the gel obtained is compatible with the injection, for example by syringe in the case of cosmetic and / or therapeutic applications. It has also been shown that the autoclaving of such a preparation has no significant effect on the concentration of vitamin C contained in the gel and therefore on its stability; said vitamin C not being degraded after the sterilization and being stable over time.
- the invention also relates to gelled aqueous compositions that can be obtained according to the process according to the invention.
- the gelled aqueous compositions obtainable according to the process according to the invention are stable enough to be sterilized by autoclaving and conditioned to be stored for several months, preferably at least 6 months, without significant degradation of the gel or its components, especially vitamin C, which differentiate them from known compositions obtained by d ' other processes. Furthermore, the invention relates to the use of such compositions as injectable injectable gel in aesthetic and reconstructive medicine but also as an injectable gel against joint problems in rheumatology.
- the injectable gels according to the invention may also contain additional ingredients, in particular anesthetic agents and in particular lidocaine, anti-ecchymotic agents, agents stimulating the production of hyaluronic acid, agents stimulating cell proliferation and / or agents stimulating the production of collagen.
- additional agents stimulating the production of collagen may be chosen from amino acids, in particular proline, glycine, hydroxyproline, lysine, and peptide derivatives derived from amino acid coupling.
- Figure 1 Graph representing the ascorbate content assayed as ascorbic acid after acidification of a hyaluronic acid gel stored at room temperature.
- Figure 2 Graph showing ascorbate content assayed as ascorbic acid after acidification of a hyaluronic acid gel stored at 7 ° C.
- a stability study was conducted over a period of 6 months from a commercial freeze.
- the samples were sterilized by autoclaving and then stored at a temperature of 7 ° C and at room temperature for 6 months.
- the vitamin C content of the gel samples was analyzed by a residual vitamin C assay.
- the appearance of the gel and its behavior were also evaluated by a visual observation of the organoleptic characteristics of the gel.
- the characteristics of the gel are visually controlled in comparison to a control sample.
- the vitamin C content is assayed by HPLC.
- the batch tested was made from a commercial monophasic hyaluronic acid gel purified so that it no longer contains solvents or additives such as lidocaine.
- An amount of sodium ascorbate equivalent to 10% by weight of vitamin C was generated in situ by addition of at least one stoichiometric amount of sodium hydrogencarbonate to ascorbic acid and 0.08% by weight of sodium metabisulfite were added. added, as well as, in fine, the necessary amount of water.
- the preparations were degassed according to degassing methods known to those skilled in the art, among which there may be mentioned, for example, ultrasonic methods or the realization of vacuum / nitrogen cycles. The gel is then allowed to swell in a sealed atmosphere controlled container prior to autoclaving at a temperature of 121 ° C for 15 minutes.
- Example 1 Sterilization of an Inflated Reticulated Gel Without Vitamin C Addition
- Example 2 sterilization of a hyaluronic acid gel with addition of vitamin C
- HA hyaluronic acid
- the vial containing the preparation is hermetically closed and stirred slowly for 3 hours, then left at room temperature for 2 days until complete swelling of the gel, then autoclaved at 121 ° C for 15 minutes for sterilization.
- Example 3 Sterilization of a Hyaluronic Acid Gel, with Addition of Vitamin C and Metabisulfite in the Solid Phase Without Performing a Degassing Step
- the gels are prepared as described above, but in the absence of degassing.
- HA Hyaluronic acid
- NaHCO 3 Sodium hydrogen carbonate
- a 2 S 2 0 5 Sodium metabisulfite With 1% w / v corresponding to a mass concentration of 1 g per 100 ml.
- the gel retains its gel appearance without a significant difference in texture compared to the commercial gel. However, it has a yellow color after autoclaving. The 12.5 fold increase in metabisulfite concentration between the two trials does not solve the problem.
- Example 4 sterilization of a hyaluronic acid gel with addition of vitamin C, without metabisulphite, with a degassing step.
- Example 5 Sterilization of a hyaluronic acid gel with addition of vitamin C and metabisulfite at a concentration of 0.08% and degassing before swelling and autoclaving.
- Example 6 Stability of a hyaluronic acid gel with addition of vitamin C and metabisulfite and degassing before autoclaving.
- the autoclaving does not induce significant changes in appearance or in terms of vitamin C concentration.
- the residual percentages of vitamin C are greater than 97% after 5 months of storage under both temperature conditions. However, there has been a slight decrease in the last month, with little significant variability of 3% linked to the method, with a residual percentage around 93%.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Chemical & Material Sciences (AREA)
- Epidemiology (AREA)
- Pharmacology & Pharmacy (AREA)
- Medicinal Chemistry (AREA)
- Birds (AREA)
- Dermatology (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Rheumatology (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Gerontology & Geriatric Medicine (AREA)
- Molecular Biology (AREA)
- Pain & Pain Management (AREA)
- Ophthalmology & Optometry (AREA)
- Immunology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Physical Education & Sports Medicine (AREA)
- Medicinal Preparation (AREA)
- Cosmetics (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Materials For Medical Uses (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP14718992.2A EP2988724A2 (fr) | 2013-04-26 | 2014-04-23 | Procédé d'obtention d'un gel stable d'acide hyaluronique et d'une forme libre de vitamine c et/ou de l'un de ses sels |
| US14/786,721 US9669007B2 (en) | 2013-04-26 | 2014-04-23 | Method for obtaining a stable gel of hyaluronic acid and of a free form of vitamin C and/or a salt thereof |
| CN201480023766.XA CN105377229A (zh) | 2013-04-26 | 2014-04-23 | 获得透明质酸和游离形式维生素c和/或它们的盐的稳定凝胶的方法 |
| KR1020157031437A KR20160002874A (ko) | 2013-04-26 | 2014-04-23 | 히알루론산 및 유리 형태의 비타민 c 및/또는 이의 염의 안정성 겔 수득 방법 |
| JP2016509447A JP2016517737A (ja) | 2013-04-26 | 2014-04-23 | ヒアルロン酸ならびにビタミンcの遊離型および/またはその塩の安定ゲルを取得するための方法 |
| BR112015026913A BR112015026913A2 (pt) | 2013-04-26 | 2014-04-23 | processo para a obtenção de um gel estável de ácido hialurônico e de uma forma livre de vitamina c e/ou um sal respectivo |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE2013/0295A BE1022012B1 (fr) | 2013-04-26 | 2013-04-26 | Gel stable d'acide hyaluronique et d'une forme libre de vitamine c et/ou de l'un de ses sels |
| BE2013/0295 | 2013-04-26 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO2014173941A2 true WO2014173941A2 (fr) | 2014-10-30 |
| WO2014173941A3 WO2014173941A3 (fr) | 2014-12-31 |
| WO2014173941A9 WO2014173941A9 (fr) | 2015-02-19 |
Family
ID=48672305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2014/058229 Ceased WO2014173941A2 (fr) | 2013-04-26 | 2014-04-23 | Procédé d'obtention d'un gel stable d'acide hyaluronique et d'une forme libre de vitamine c et/ou de l'un de ses sels |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9669007B2 (fr) |
| EP (1) | EP2988724A2 (fr) |
| JP (1) | JP2016517737A (fr) |
| CN (1) | CN105377229A (fr) |
| BE (1) | BE1022012B1 (fr) |
| BR (1) | BR112015026913A2 (fr) |
| WO (1) | WO2014173941A2 (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016207496A1 (fr) * | 2015-06-24 | 2016-12-29 | Tauzin Bénédicte Vincente | Procede de preparation d'un hydrogel reticule injectable; hydrogel obtenu; utilisation de l'hydrogel obtenu |
| ITUB20152183A1 (it) * | 2015-07-15 | 2017-01-15 | Germano Laghi | Miscela di principi attivi cosmetici per la preparazione di un gel cosmetico e metodo per la preparazione di detto gel |
| US10500225B2 (en) | 2015-12-07 | 2019-12-10 | Kh Medtech Sárl | Injectable composition; method for preparing said composition; use of said composition |
| CN115015439A (zh) * | 2022-06-30 | 2022-09-06 | 瑞玞生物医学(深圳)有限公司 | 一种复合溶液中抗氧剂的分离检测方法 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6739118B1 (ja) * | 2019-11-22 | 2020-08-12 | 株式会社アンズコーポレーション | 油溶性ビタミンの着色抑制方法及び化粧料 |
| CN111840315B (zh) * | 2020-08-14 | 2022-12-16 | 酉西(龙岩)生物科技有限责任公司 | 一种纳米硒材料、制备方法及使用方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19703469C2 (de) * | 1997-01-31 | 2003-10-30 | Wolfgang Von Rhein | Verfahren zur Herstellung eines oxidationsgeschützten Vitamin-C-Präparats |
| AU2001286578A1 (en) * | 2000-08-24 | 2002-03-04 | Tim Ioannides | Topical antioxidant having vitamin c and method of combination with topical agent by user |
| CA2472188C (fr) * | 2002-01-18 | 2011-06-21 | Control Delivery Systems, Inc. | Systeme de gel polymere pour administration regulee de medicaments combines |
| US20050228336A1 (en) * | 2004-04-07 | 2005-10-13 | Preston Keusch | Electrically assisted lidocaine and epinephrine delivery device having extended shelf-stability |
| DE102009008940A1 (de) * | 2009-02-13 | 2010-08-19 | Rolf Ludl | Hautpflegende Kombination aus Hyaluronsäuregel und Creme in separaten Zubereitungen |
| FR2948286B1 (fr) | 2009-07-27 | 2011-08-26 | Jean-Noel Thorel | Composition injectable associant un agent de comblement et un milieu de croissance des fibroblastes |
| US20110172180A1 (en) * | 2010-01-13 | 2011-07-14 | Allergan Industrie. Sas | Heat stable hyaluronic acid compositions for dermatological use |
| US20110171310A1 (en) * | 2010-01-13 | 2011-07-14 | Allergan Industrie, Sas | Hydrogel compositions comprising vasoconstricting and anti-hemorrhagic agents for dermatological use |
| WO2013070775A1 (fr) * | 2011-11-07 | 2013-05-16 | C.R. Bard, Inc | Insert à base d'hydrogel renforcé pour ultrasons |
-
2013
- 2013-04-26 BE BE2013/0295A patent/BE1022012B1/fr not_active IP Right Cessation
-
2014
- 2014-04-23 JP JP2016509447A patent/JP2016517737A/ja active Pending
- 2014-04-23 CN CN201480023766.XA patent/CN105377229A/zh active Pending
- 2014-04-23 EP EP14718992.2A patent/EP2988724A2/fr not_active Withdrawn
- 2014-04-23 BR BR112015026913A patent/BR112015026913A2/pt not_active IP Right Cessation
- 2014-04-23 WO PCT/EP2014/058229 patent/WO2014173941A2/fr not_active Ceased
- 2014-04-23 US US14/786,721 patent/US9669007B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016207496A1 (fr) * | 2015-06-24 | 2016-12-29 | Tauzin Bénédicte Vincente | Procede de preparation d'un hydrogel reticule injectable; hydrogel obtenu; utilisation de l'hydrogel obtenu |
| FR3037797A1 (fr) * | 2015-06-24 | 2016-12-30 | Benedicte Vincente Gavard Molliard Tauzin | Procede de preparation d'un hydrogel reticule injectable; hydrogel obtenu; utilisation de l'hydrogel obtenu |
| EP3313452B1 (fr) | 2015-06-24 | 2019-09-04 | Kylane Laboratoires SA | Procede de preparation d'un hydrogel reticule injectable; hydrogel obtenu; utilisation de l'hydrogel obtenu |
| US10588922B2 (en) | 2015-06-24 | 2020-03-17 | Kylane Laboratoires Sa | Method for preparing an injectable cross-linked hydrogel, hydrogel obtained; and use of the obtained hydrogel |
| ITUB20152183A1 (it) * | 2015-07-15 | 2017-01-15 | Germano Laghi | Miscela di principi attivi cosmetici per la preparazione di un gel cosmetico e metodo per la preparazione di detto gel |
| US10500225B2 (en) | 2015-12-07 | 2019-12-10 | Kh Medtech Sárl | Injectable composition; method for preparing said composition; use of said composition |
| CN115015439A (zh) * | 2022-06-30 | 2022-09-06 | 瑞玞生物医学(深圳)有限公司 | 一种复合溶液中抗氧剂的分离检测方法 |
| CN115015439B (zh) * | 2022-06-30 | 2023-11-03 | 瑞玞生物医学(深圳)有限公司 | 一种复合溶液中抗氧剂的分离检测方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| BR112015026913A2 (pt) | 2017-07-25 |
| US9669007B2 (en) | 2017-06-06 |
| EP2988724A2 (fr) | 2016-03-02 |
| US20160106707A1 (en) | 2016-04-21 |
| BE1022012B1 (fr) | 2016-02-04 |
| CN105377229A (zh) | 2016-03-02 |
| WO2014173941A9 (fr) | 2015-02-19 |
| WO2014173941A3 (fr) | 2014-12-31 |
| JP2016517737A (ja) | 2016-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| BE1022012B1 (fr) | Gel stable d'acide hyaluronique et d'une forme libre de vitamine c et/ou de l'un de ses sels | |
| CA2636203C (fr) | Gel viscoelastique a usage dermatologique | |
| EP2890360B1 (fr) | Composition, sterilisee, comprenant au moins un acide hyaluronique et de l'ascorbyl phosphate de magnesium | |
| CA2708023C (fr) | Hydrogel cohesif monophasique biodegradable | |
| FR3096260A1 (fr) | Chitosane et ses applications | |
| FR3006689A1 (fr) | Procede de reticulation de l'acide hyaluronique; procede de preparation d'un hydrogel injectable; hydrogel obtenu; utilisation de l'hydroget obtenu | |
| CA2932967C (fr) | Compositions d'acide hyaluronique comprenant de la mepivacaine | |
| FR2909560A1 (fr) | Gel d'acide hyaluronique pour injection intradermique | |
| WO2010052430A2 (fr) | Composition injectable a base d'acide hyaluronique ou l'un de ses sels, de polyols et de lidocaïne, sterilisee a la chaleur | |
| FR3036035A1 (fr) | Compositions comprenant au moins un polyol et au moins un anesthesique | |
| EP2011816A1 (fr) | Gel co-réticulé de polysaccharides | |
| WO2017131130A1 (fr) | Composition aqueuse stabilisée comprenant du sulfate de chondroïtine et d'acide hyaluronique | |
| WO2022106676A1 (fr) | Billes a base de chitosane, preparation, compositions et applications | |
| CA2956863A1 (fr) | Composition thermogelifiable sterilisee | |
| EP2651393A1 (fr) | Formulation aqueuse injectable stérile utilisée en ophtalmologie | |
| WO2017009335A1 (fr) | Chitosane pour mélange avec un fluide coagulable | |
| KR20160002874A (ko) | 히알루론산 및 유리 형태의 비타민 c 및/또는 이의 염의 안정성 겔 수득 방법 | |
| EP3313452B1 (fr) | Procede de preparation d'un hydrogel reticule injectable; hydrogel obtenu; utilisation de l'hydrogel obtenu | |
| EP3315130A1 (fr) | Composition a base d'acide hyaluronique comprenant de la mepivacaïne | |
| CA3216030A1 (fr) | Produit biocompatible a matrice comprenant un polysaccharide et du chitosane co-reticules |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14718992 Country of ref document: EP Kind code of ref document: A2 |
|
| ENP | Entry into the national phase |
Ref document number: 2016509447 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 242263 Country of ref document: IL |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 20157031437 Country of ref document: KR Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2014718992 Country of ref document: EP |
|
| REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112015026913 Country of ref document: BR |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 14786721 Country of ref document: US |
|
| ENP | Entry into the national phase |
Ref document number: 112015026913 Country of ref document: BR Kind code of ref document: A2 Effective date: 20151022 |


