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WO2012118192A1 - Solution aqueuse contenant de l'acide hyaluronique ou un sel de celui-ci - Google Patents

Solution aqueuse contenant de l'acide hyaluronique ou un sel de celui-ci Download PDF

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Publication number
WO2012118192A1
WO2012118192A1 PCT/JP2012/055425 JP2012055425W WO2012118192A1 WO 2012118192 A1 WO2012118192 A1 WO 2012118192A1 JP 2012055425 W JP2012055425 W JP 2012055425W WO 2012118192 A1 WO2012118192 A1 WO 2012118192A1
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Prior art keywords
salt
aqueous solution
hyaluronic acid
solution containing
acid
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PCT/JP2012/055425
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English (en)
Japanese (ja)
Inventor
健司 能見
賢太郎 島田
忠志 守川
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Denka Co Ltd
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Denki Kagaku Kogyo KK
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Priority to CN2012800111107A priority Critical patent/CN103442721A/zh
Priority to KR1020137026033A priority patent/KR20140025369A/ko
Priority to JP2013502423A priority patent/JP5957440B2/ja
Publication of WO2012118192A1 publication Critical patent/WO2012118192A1/fr
Anticipated expiration legal-status Critical
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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
    • A61K31/70—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
    • 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
    • A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
    • A61K47/08—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
    • A61K47/12—Carboxylic acids; Salts or anhydrides 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
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/36—Carboxylic acids; Salts or anhydrides 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
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
    • A61K8/362—Polycarboxylic acids
    • 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
    • A61K9/08—Solutions
    • 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
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin

Definitions

  • the present invention relates to an aqueous solution containing hyaluronic acid or a salt thereof containing a carboxylic acid or a salt thereof containing a low content of divalent soluble iron and containing no amino group or thiol group.
  • Hyaluronic acid is known as a polysaccharide composed of linked disaccharide units of N-acetylglucosamine and glucuronic acid.
  • Hyaluronic acid is generally used as a raw material for pharmaceuticals, cosmetics, foods and the like.
  • As a production method of hyaluronic acid there are a method of producing with an extract from a chicken crown or the like, and a method of producing by a fermentation method using a microorganism.
  • Patent Document 1 describes that hyaluronic acid was produced by fermentation using Streptococcus tin-epidemicus.
  • the yield and molecular weight of hyaluronic acid are higher when ferrous sulfate is added to a concentration of 3 times during the culture (Example 3) than when not added (Example 1). It is described that it has increased.
  • Patent Document 2 describes that hyaluronic acid powder was produced by fermentation using Streptococcus equi (ATCC9527).
  • Patent Document 3 describes experimental data indicating that sodium hyaluronate crystals produced based on the method of Patent Document 2 contain a large amount of calcium, magnesium, and iron.
  • Patent Document 3 discloses a sodium hyaluronate crystal in which the content of calcium, magnesium, and iron is reduced to less than 10 ppm by further contacting a chelate resin with the hyaluronic acid-containing liquid obtained based on the method of Patent Document 2. It is described that obtained.
  • the hyaluronic acid powder contained a lot of calcium, magnesium, and iron, and the purity of sodium hyaluronate was low.
  • Patent Document 3 Thirdly, in the production method of Patent Document 3, it is described that the content of calcium, magnesium, and iron in the sodium hyaluronate crystal is reduced to less than 10 ppm, but what was the specific content? Is unknown. The analysis results are in the order of ppm and lack precision. Furthermore, it is not described what specific effects can be obtained by reducing the contents of calcium, magnesium, and iron.
  • the present invention has been made in view of the above circumstances, and since the content of divalent soluble iron is 5 ppb or less and includes a carboxylic acid or a salt thereof that does not contain an amino group and a thiol group, the stability is improved.
  • An object is to provide an aqueous solution containing high hyaluronic acid or a salt thereof.
  • the present inventors have found that the higher the content of divalent soluble iron mixed in the hyaluronate aqueous solution, the higher the hyaluronic acid molecule It was found for the first time that the stability of was reduced. In addition, the inventors surprisingly found that the stability of hyaluronic acid molecules does not decrease even when the content of trivalent soluble iron is large, and the content of divalent soluble iron is large. We have also found that the stability of hyaluronic acid molecules is reduced.
  • the present inventors reduced the content of divalent soluble iron mixed in an aqueous solution containing hyaluronic acid or a salt thereof, and improved the stability of hyaluronic acid molecules by divalent soluble iron.
  • the present inventors reduced the content of divalent soluble iron mixed in an aqueous solution containing hyaluronic acid or a salt thereof, and improved the stability of hyaluronic acid molecules by divalent soluble iron.
  • the inventors surprisingly added glycine, L-aspartate Na, Na bromide, Na hydrogen sulfite, sulfide Na, thioglycolate Na, glucose, purified sucrose, or ascorbic acid. Found that the decrease in the stability of hyaluronic acid molecules due to divalent soluble iron was not suppressed, and that the addition of the divalent soluble iron often resulted in a decrease in stability, and thus completed the present invention.
  • the aqueous solution containing this hyaluronic acid or a salt thereof has been demonstrated in Examples to be described later that the intrinsic viscosity remaining rate after storage is good. Therefore, it is suitable for raw materials such as pharmaceuticals, cosmetics and foods.
  • a pharmaceutical composition comprising an aqueous solution containing the above hyaluronic acid or a salt thereof.
  • This pharmaceutical composition contains an aqueous solution containing hyaluronic acid or a salt thereof having a good residual intrinsic viscosity after storage. For this reason, it is difficult for a decrease in viscosity or a decrease in quality to occur over time.
  • an injection for treating arthritis comprising an aqueous solution containing the above hyaluronic acid or a salt thereof.
  • This injection for treatment of arthropathy includes an aqueous solution containing hyaluronic acid or a salt thereof having a good residual intrinsic viscosity after storage. Therefore, good retention is obtained when administered in or around the joint.
  • a cosmetic composition comprising an aqueous solution containing the hyaluronic acid or a salt thereof.
  • This cosmetic composition contains an aqueous solution containing hyaluronic acid or a salt thereof having an excellent residual viscosity after storage. For this reason, it is difficult for a decrease in viscosity or a decrease in quality to occur over time.
  • the step of dissolving the composition containing hyaluronic acid or a salt thereof and divalent soluble iron and the carboxylic acid or a salt thereof containing no amino group and thiol group in an aqueous solution The composition containing hyaluronic acid or a salt thereof having a divalent soluble iron content of 5 ppb or less when dissolved in an aqueous solution so that the concentration of hyaluronic acid or a salt thereof is 10 mg / mL
  • a method for producing an aqueous solution containing the salt is provided. According to this production method, it is possible to produce hyaluronic acid or a salt thereof having an excellent residual residual viscosity after storage.
  • the step of dissolving the composition containing hyaluronic acid or a salt thereof and divalent soluble iron and the carboxylic acid or a salt thereof containing no amino group and thiol group in an aqueous solution is provided.
  • a method for promoting stabilization of an aqueous solution containing the salt is provided.
  • the carboxylic acid or salt thereof containing no amino group or thiol group is contained in an aqueous solution containing hyaluronic acid or a salt thereof having a divalent soluble iron content of 5 ppb or less, the intrinsic viscosity remaining rate after storage It has been demonstrated in the examples described later that the improvement is significantly improved. Therefore, according to this stabilization promoting method, stabilization of an aqueous solution containing hyaluronic acid or a salt thereof can be significantly promoted.
  • an aqueous solution containing hyaluronic acid or a salt thereof having a divalent soluble iron content of 5 ppb or less including a carboxylic acid or a salt thereof not containing an amino group and a thiol group.
  • a stabilizer is provided. If the carboxylic acid or salt thereof containing no amino group or thiol group is contained in an aqueous solution containing hyaluronic acid or a salt thereof having a divalent soluble iron content of 5 ppb or less, the intrinsic viscosity remaining rate after storage It has been demonstrated in the examples described later that the improvement is significantly improved. Therefore, if this stabilizer is added to an aqueous solution containing hyaluronic acid or a salt thereof having a divalent soluble iron content of 5 ppb or less, the stabilizer can be remarkably stabilized.
  • the content of divalent soluble iron is 5 ppb or less and includes a carboxylic acid or a salt thereof that does not contain an amino group and a thiol group, the highly stable hyaluronic acid or a salt thereof is included. An aqueous solution is obtained.
  • FIG. 1 is a graph showing a change in intrinsic viscosity residual rate when sodium hyaluronate powder is added to an aqueous solution containing divalent soluble iron and Na citrate.
  • One embodiment of the present invention is an aqueous solution containing hyaluronic acid or a salt thereof containing a carboxylic acid or a salt thereof containing a divalent soluble iron of 5 ppb or less and containing no amino group and thiol group.
  • An aqueous solution containing hyaluronic acid or a salt thereof having such a composition has a high residual residual viscosity after storage and is excellent in physical stability, as demonstrated in Examples described later. In addition, the viscosity and quality are hardly lowered even after long-term storage or after a long period of time, and it is suitable for raw materials such as pharmaceuticals, cosmetics and foods.
  • the carboxylic acid or salt thereof containing no amino group and thiol group is, for example, one or more compounds selected from the group consisting of citric acid, lactic acid, tartaric acid, salicylic acid, succinic acid, malic acid, and acetic acid, or salts thereof.
  • citric acid lactic acid, tartaric acid, salicylic acid, succinic acid, malic acid, and acetic acid, or salts thereof.
  • a salt the salt which sodium, potassium, zinc, iron, calcium, or ammonium couple
  • the citrate salt may be potassium hydrogen citrate.
  • Carboxylic acid is a compound having an R-COOH structure.
  • the carboxylic acid may have 2, 3, 4, 5, 6, 7, 12, or 15 carbon atoms, for example.
  • the number of carbon atoms may be greater than or equal to the value exemplified here, or may be within the range of any two values.
  • the number of carboxyl groups in the molecule of the carboxylic acid may be 1, 2, 3, 4, 5, or 10, for example.
  • the number of carboxyl groups may be greater than or equal to the value exemplified here, or may be in the range of any two values.
  • the carboxylic acid may be a saturated carboxylic acid or an unsaturated carboxylic acid.
  • the carboxylic acid may contain a hydroxyl group.
  • the number of hydroxyl groups may be 1, 2, 3, 4, 5, or 10, for example.
  • the number of hydroxyl groups may be greater than or equal to the value exemplified here, or may be in the range of any two values.
  • the above 5 ppb or less may be, for example, 0.001, 0.01, 0.1, 0.5, 1, 2, 4, or 5 ppb.
  • the content may be equal to or less than the value exemplified here, or may be in the range of any two values. This content is preferably smaller from the viewpoint of improving the stability of an aqueous solution containing hyaluronic acid or a salt thereof.
  • the content of the carboxylic acid or salt thereof containing no amino group and thiol group contained in the aqueous solution containing the hyaluronic acid or salt thereof of the present embodiment is, for example, 5, 10, 30, 50, 100, 150, 300. 500, 800, 1000, 1500, 2000, 5000 or 10000 ⁇ g / mL. Moreover, this content rate may be in the range of any two values exemplified here.
  • the content is preferably 10 ⁇ g / mL or more, more preferably 500 ⁇ g / mL or more from the viewpoint of further improving the stability of the aqueous solution containing hyaluronic acid or a salt thereof.
  • the content is preferably 2000 ⁇ g / mL or less, more preferably 1500 ⁇ g / mL or less, from the viewpoint of reducing production cost or improving operability.
  • the average molecular weight of sodium hyaluronate or a salt thereof contained in the aqueous solution containing hyaluronic acid or a salt thereof of the present embodiment is, for example, 500,000, 800,000, 1,000,000, 1.5 million, 1.8 million, 2 million, 2.5 million, 300 May be 5 million, 5 million, or 8 million. This average molecular weight may be within the range of any two values exemplified here. From the viewpoint of further improving the viscosity of an aqueous solution containing hyaluronic acid or a salt thereof, it is preferably 1 million or more, more preferably 1.5 million or more.
  • An aqueous solution containing high-viscosity hyaluronic acid or a salt thereof is excellent in retention in the affected area when used as an injection for the treatment of arthropathy.
  • the average molecular weight of hyaluronic acid or a salt thereof contained in an aqueous solution containing hyaluronic acid or a salt thereof is calculated by measuring Laurent's formula (LAURENT et al., Biochim Biophys Acta. 1960 Aug 26; 42: 476-485 .).
  • the content of hyaluronic acid or a salt thereof contained in the aqueous solution containing hyaluronic acid or a salt thereof according to the present embodiment is, for example, 0.1, 1, 5, 8, 9, 10, 11, 12, 15, or 20 mg / mL. It may be. This content may be within the range of any two values exemplified here. From the viewpoint of therapeutic effect or operability when used for injections and the like, it is preferably in the range of 5 and 15 mg / mL, more preferably in the range of 8 and 12 mg / mL.
  • the pH of the aqueous solution containing hyaluronic acid or a salt thereof according to this embodiment may be, for example, 5.5, 6, 6.5, 6.8, 7, 7.8, 8, 8.5, or 9. This pH may be within the range of any two values exemplified herein.
  • the pH is preferably in the range of 6.5 and 8 from the viewpoint of stability, and more preferably in the range of 6.8 and 7.8.
  • the aqueous solution containing hyaluronic acid or a salt thereof includes, for example, a composition containing hyaluronic acid or a salt thereof and divalent soluble iron, and a carboxylic acid or a salt thereof containing no amino group and thiol group.
  • the content of the divalent soluble iron in the aqueous solution when the hyaluronic acid or salt thereof is dissolved in the aqueous solution so that the concentration is 10 mg / mL. It can be obtained by a method for producing an aqueous solution containing hyaluronic acid or a salt thereof that is 5 ppb or less. This production method does not necessarily require complicated steps, and is excellent in productivity or cost.
  • hyaluronic acid salt may be, for example, sodium hyaluronate, potassium hyaluronate, zinc hyaluronate, calcium hyaluronate, magnesium hyaluronate, or ammonium hyaluronate.
  • sodium hyaluronate is preferable from the viewpoint that a desired viscosity or a therapeutic effect on arthropathy can be expected.
  • the chemical name of sodium hyaluronate is, for example, [ ⁇ 3) -2-acetamido-2-deoxy- ⁇ -D-glucopyranosyl- (1 ⁇ 4) - ⁇ -D-sodium glucopyranosyluronate- (1 ⁇ ] n (IUPAC) Can be represented.
  • divalent soluble iron is iron in a soluble state and is divalent. It can also be expressed as Fe 2+ or divalent iron.
  • the aqueous solution containing hyaluronic acid or a salt thereof according to this embodiment can be used as a raw material of a pharmaceutical composition.
  • the pharmaceutical composition contains an aqueous solution containing hyaluronic acid or a salt thereof excellent in stability, the viscosity and quality are hardly lowered even after long-term storage. Further, for example, when it is administered in or around the joint, it can stay in the affected area for a long time or a desired time.
  • the dosage form of this pharmaceutical composition is not particularly limited, but an injection is preferable from the viewpoint that it can be directly administered to an affected area such as a joint.
  • a syringe, a vial, or an ampoule can be used as the container for the injection.
  • it can be administered alone, but can be mixed with one or more pharmacologically acceptable carriers or excipients and any well known in the pharmaceutical arts. It is preferably provided as a pharmaceutical preparation produced by the method.
  • This pharmaceutical composition is prepared according to the dosage form by using a buffer (eg, phosphate buffer, sodium acetate buffer), a soothing agent (eg, lidocaine hydrochloride, procaine hydrochloride, etc.), a stabilizer (eg, human serum albumin).
  • a buffer eg, phosphate buffer, sodium acetate buffer
  • a soothing agent eg, lidocaine hydrochloride, procaine hydrochloride, etc.
  • a stabilizer eg, human serum albumin
  • the pharmaceutical composition may also contain sodium hydrogen phosphate, crystalline sodium dihydrogen phosphate, and sodium chloride as additives.
  • the adjusted pharmaceutical composition can be administered to, for example, humans and mammals (eg, rats, mice, rabbits, dogs, monkeys, sheep, pigs, cows, cats, etc.).
  • the pharmaceutical composition includes a composition used for the purpose of prevention.
  • the administration method of this pharmaceutical composition can be appropriately selected depending on the age, symptoms, affected area, etc. of the subject.
  • 2.5 mL of an adult can be administered into the knee joint cavity 5 times continuously every week.
  • it can be administered at intervals of 2 to 4 weeks.
  • 2.5 mL of an adult once a week for 5 consecutive shoulder joints (shoulder joint cavity, subacromial bursa, or biceps long head tendon) can be administered within the tendon sheath).
  • 2.5 mL of an adult can be administered into the knee joint cavity 5 times continuously every week. It may also be administered in combination with an appropriate chemotherapeutic agent.
  • Examples of the pharmacological action of this pharmaceutical composition include: a) viscoelasticity or lubrication action by hyaluronate binding to the cartilage tissue and covering the surface, b) cartilage matrix stabilization action (degeneration suppression) C) analgesic action by covering the surface of inflammatory cells and synovial cells, or by suppressing the production of analgesic substances, or d) close to arthritis with synovial and cartilage degeneration Examples thereof include inflammatory effects expressed by affecting synovial cells, chondrocytes, or inflammatory cells such as neutrophils and macrophages. By these actions, for example, reduction of pain, improvement of daily life activities and joint range of motion are expected.
  • the aqueous solution containing hyaluronic acid or a salt thereof according to this embodiment can be used as a raw material for a cosmetic composition.
  • the cosmetic composition includes an aqueous solution containing hyaluronic acid or a salt thereof excellent in stability, the viscosity and quality are not easily lowered even after long-term storage.
  • the moisturizing effect tends to be sustained.
  • Another embodiment includes dissolving a composition containing hyaluronic acid or a salt thereof and divalent soluble iron and a carboxylic acid or a salt thereof containing no amino group and thiol group in an aqueous solution.
  • the composition is hyaluronic acid or a salt thereof, wherein the content of divalent soluble iron in the aqueous solution is 5 ppb or less when dissolved in the aqueous solution so that the concentration of hyaluronic acid or a salt thereof is 10 mg / mL
  • Is a method for promoting the stabilization of an aqueous solution containing According to this method, an aqueous solution containing hyaluronic acid or a salt thereof having high physical stability can be obtained. Further, this method does not necessarily require a complicated process and is excellent in convenience.
  • the carboxylic acid or salt thereof containing no amino group and thiol group can be used as a raw material for the stabilizer of an aqueous solution containing hyaluronic acid or a salt thereof. If this stabilizer is used, the physical stability of an aqueous solution containing hyaluronic acid or a salt thereof having a divalent soluble iron content of 5 ppb or less can be improved.
  • This stabilizer may be in powder or liquid form. In the case of liquid, a buffer may be included.
  • a sodium hyaluronate aqueous solution was prepared by the following procedure. First, 1 liter of a medium consisting of 5% glucose, 0.2% monopotassium phosphate, 1.0% polypeptone, and 0.5% yeast extract was heat sterilized and then Streptococcus equi FM-100 No. 9027). Culturing was carried out for 20 hours at 200 rpm with stirring, at a temperature of 33 ° C., and at pH 8.5 (control by automatic dropping of 20% sodium hydroxide) while aeration of air at 1 vvm. This solution was filtered with a cell filtration device and dialyzed against water for 12 hours to recover the hyaluronic acid solution in the dialysis membrane.
  • the collection container used was an inner surface made of glass in order to prevent iron contamination.
  • Sodium chloride was added to 2.5% here, and ethanol was added twice as much as the hyaluronic acid solution to precipitate sodium hyaluronate.
  • the precipitate was washed 5 times with ethanol, and the impurities were thoroughly washed out and then air-dried at 40 ° C. for 10 hours to obtain Na hyaluronic acid powder.
  • the obtained sodium hyaluronate powder was dissolved in an aqueous solution containing 2 mM phosphate buffer and 0.9% sodium chloride, and sodium hyaluronate containing 5, 8, 10, 12, 15 mg / mL of hyaluronic acid Na, respectively.
  • An aqueous solution was obtained.
  • the intrinsic viscosity was measured, and the molecular weight of Na hyaluronate was calculated using Laurent's formula.
  • Streptococcus equi FM-100 was cultured according to the procedure described in Example 1, and an aqueous sodium hyaluronate solution was purified by the same procedure as that described in Example 1 of Patent Document 3 (Japanese Patent Laid-Open No. 2008-280430). Specifically, first, 1 liter of a medium consisting of 5% glucose, 0.2% potassium phosphate, 1.0% polypeptone, and 0.5% yeast extract is heat-sterilized, and then Streptococcus ex FM-100 is added. Vaccinated.
  • the culture was carried out for 20 hours at 200 rpm with stirring, at a temperature of 33 ° C., and at pH 8.5 (control by automatic dropping of 20% sodium hydroxide) while aeration of air at 1 vvm.
  • the culture solution is diluted 10 times with ion-exchanged water, and 5 g of activated carbon (Shirakaba RW50-T manufactured by Takeda Pharmaceutical Co., Ltd.) and pearlite (LocaHelp # 409, Mitsui Mining & Smelting Co., Ltd.) are added to the 2.5 L aqueous solution. 30 g was added, treated for 1 hour, and filtered using Nutsche.
  • the obtained sodium hyaluronate powder was dissolved in an aqueous solution containing 2 mM phosphate buffer and 0.9% sodium chloride, and sodium hyaluronate containing 5, 8, 10, 12, 15 mg / mL of hyaluronic acid Na, respectively.
  • An aqueous solution was obtained.
  • the intrinsic viscosity was measured, and the molecular weight of Na hyaluronate was determined using the Laurent equation.
  • Example 1 (1) Analysis of soluble iron
  • the hyaluronic acid Na powder prepared in Example 1 and Comparative Example 1 was dissolved in an aqueous solution containing 2 mM phosphate buffer and 0.9% sodium chloride, and the hyaluronic acid Na was dissolved in 5, 8
  • An aqueous sodium hyaluronate solution containing 10, 12, or 15 mg / mL was prepared (No. 1 to 10), respectively.
  • the amount of divalent soluble iron, the amount of divalent and trivalent soluble iron, and the total amount of iron were measured by the following procedures (1-1) to (1-3). did.
  • the total iron amount includes soluble and insoluble iron amounts.
  • the detection limit of the bivalent soluble iron amount, the bivalent and trivalent soluble iron amount, and the total iron amount was 5 ppb.
  • Example 1 From the above results, 1) that the method described in Example 1 can be used, it is possible to prepare an aqueous solution of sodium hyaluronate having a mixed amount of divalent soluble iron of 5 ppb or less, and 2) hyaluronic acid can be obtained by divalent soluble iron. It was found that the intrinsic viscosity after storage of the aqueous acid Na solution was lowered, and 3) trivalent soluble iron did not affect the intrinsic viscosity after storage of the aqueous hyaluronate solution.
  • Example 2 Various additives were dissolved in an aqueous solution containing 2 mM phosphate buffer and 0.9% sodium chloride as shown in Table 5 (Nos. 23 to 36). Next, the sodium hyaluronate powder prepared in Example 1 was dissolved in each aqueous solution so as to have a concentration of 10 mg / mL. Furthermore, after storing at 80 ° C. for 24 hours, the intrinsic viscosity and the intrinsic viscosity residual ratio (%) were measured.
  • Additives include: Na citrate, Na lactate, Na tartrate, Na salicylate, glycine, Na-L-aspartate, Na bromide, Na hydrogen sulfite, Na sulfide, Na thioglycolate, glucose, purified white sugar, and ascorbic acid It was used.
  • the stability of the aqueous sodium hyaluronate solution is improved. I understood it. These are carboxylates that do not contain amino and thiol groups. Further, when Na bromide, Na hydrogen sulfite, Na sulfide, Na thioglycolate, glucose, or ascorbic acid was added, the stability was rather lowered.
  • Example 3 Various additives were dissolved in an aqueous solution containing 2 mM phosphate buffer and 0.9% sodium chloride as shown in Table 6 (Nos. 37 to 45). Further, 11.3 ppb (5 ppb as divalent soluble iron) was added to each aqueous solution. Next, the sodium hyaluronate powder prepared in Example 1 was dissolved in each aqueous solution so as to have a concentration of 10 mg / mL. Then, after storing for 24 hours at 80 ° C., the intrinsic viscosity and the intrinsic viscosity residual ratio (%) were measured.
  • the aqueous solution in which the sodium hyaluronate powder prepared in Example 1 was dissolved contained 5 ppb of divalent soluble iron, and the stability of the aqueous hyaluronate solution was lowered. Furthermore, it was found that the decrease in stability was significantly suppressed by Na citrate, Na lactate, Na tartrate, or Na salicylate.
  • Example 4 Na citrate was dissolved at a concentration shown in Table 7 in an aqueous solution containing 2 mM phosphate buffer and 0.9% sodium chloride (No. 46 to 52). Next, the sodium hyaluronate powder prepared in Example 1 was dissolved in each aqueous solution so as to have a concentration of 10 mg / mL. Furthermore, after storing at 80 ° C. for 24 hours, the intrinsic viscosity and the intrinsic viscosity residual ratio (%) were measured.
  • the aqueous solution in which the sodium hyaluronate powder prepared in Example 1 was dissolved contained 10 ⁇ g / mL or more of sodium citrate, thereby improving the stability of the aqueous hyaluronate solution.
  • the stability improvement was moderated when Na citrate was contained at 1000 ⁇ g / mL.
  • Citrate Na was dissolved in an aqueous solution containing 2 mM phosphate buffer and 0.9% sodium chloride so that the concentration was 1000 ⁇ g / mL. Furthermore, iron chloride (II) having a concentration shown in Table 8 was added to each aqueous solution (No. 53 to 58). Next, the sodium hyaluronate powder prepared in Example 1 was dissolved in each aqueous solution so as to have a concentration of 10 mg / mL. Then, after storing for 24 hours at 80 ° C., the intrinsic viscosity and the intrinsic viscosity residual ratio (%) were measured.
  • Fig. 1 shows the results of Table 8 and Table 3 as a graph. From FIG. 1, it can be seen that the stability of the aqueous solution of sodium hyaluronate is improved by adding 1000 ⁇ g / mL of sodium citrate to the hyaluronic solution containing a low concentration of divalent soluble iron. This stabilizing effect was particularly remarkable when the divalent soluble iron concentration was 5 ppb or less.
  • the aqueous solution of sodium hyaluronate having a low content of divalent soluble iron had an improved residual intrinsic viscosity after storage. Furthermore, when the sodium hyaluronate aqueous solution contained Na citrate, the intrinsic viscosity remaining rate was further improved.
  • This aqueous sodium hyaluronate solution has high stability and is less likely to cause a decrease in viscosity or quality even after long-term storage, and thus is excellent as a raw material for pharmaceutical compositions, for example. Moreover, since it is suitable for long-term storage, the cost can be reduced.

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Abstract

La présente invention concerne une solution aqueuse hautement stable contenant de l'acide hyaluronique ou un sel de celui-ci. L'invention concerne une solution aqueuse contenant de l'acide hyaluronique ou un sel de celui-ci et contenant un acide carboxylique ou un sel de celui-ci qui ne contient pas de groupe amino ou de groupe thiol, la teneur en fer soluble divalent n'étant pas supérieure à 5 ppb. En variante, l'invention concerne une solution aqueuse contenant de l'acide hyaluronique ou un sel de celui-ci, la concentration d'acide hyaluronique ou d'un sel de celui-ci étant de 5-15 mg/mL.
PCT/JP2012/055425 2011-03-02 2012-03-02 Solution aqueuse contenant de l'acide hyaluronique ou un sel de celui-ci Ceased WO2012118192A1 (fr)

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CN2012800111107A CN103442721A (zh) 2011-03-02 2012-03-02 含透明质酸或透明质酸盐的水溶液
KR1020137026033A KR20140025369A (ko) 2011-03-02 2012-03-02 히알루론산 또는 히알루론산염을 포함하는 수용액
JP2013502423A JP5957440B2 (ja) 2011-03-02 2012-03-02 ヒアルロン酸またはその塩を含む水溶液

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Publication number Priority date Publication date Assignee Title
JP2016040236A (ja) * 2014-08-12 2016-03-24 ロート製薬株式会社 外用剤
WO2025210076A1 (fr) 2024-04-03 2025-10-09 Rimbarlat, S.L. Acide lactique destiné à être utilisé dans le traitement de lésions du système musculo-squelettique

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016040236A (ja) * 2014-08-12 2016-03-24 ロート製薬株式会社 外用剤
WO2025210076A1 (fr) 2024-04-03 2025-10-09 Rimbarlat, S.L. Acide lactique destiné à être utilisé dans le traitement de lésions du système musculo-squelettique

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KR20140025369A (ko) 2014-03-04
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