WO2012118191A1 - ヒアルロン酸またはその塩を含む水溶液 - Google Patents
ヒアルロン酸またはその塩を含む水溶液 Download PDFInfo
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- WO2012118191A1 WO2012118191A1 PCT/JP2012/055424 JP2012055424W WO2012118191A1 WO 2012118191 A1 WO2012118191 A1 WO 2012118191A1 JP 2012055424 W JP2012055424 W JP 2012055424W WO 2012118191 A1 WO2012118191 A1 WO 2012118191A1
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- aqueous solution
- hyaluronic acid
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- soluble iron
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/006—Heteroglycans, i.e. polysaccharides having more than one sugar residue in the main chain in either alternating or less regular sequence; Gellans; Succinoglycans; Arabinogalactans; Tragacanth or gum tragacanth or traganth from Astragalus; Gum Karaya from Sterculia urens; Gum Ghatti from Anogeissus latifolia; Derivatives thereof
- C08B37/0063—Glycosaminoglycans or mucopolysaccharides, e.g. keratan sulfate; Derivatives thereof, e.g. fucoidan
- C08B37/0072—Hyaluronic acid, i.e. HA or hyaluronan; Derivatives thereof, e.g. crosslinked hyaluronic acid (hylan) or hyaluronates
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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
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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
- A61K47/02—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
- A61K47/06—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
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- 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
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- 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
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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
- A61K9/08—Solutions
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- 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
- A61P17/16—Emollients or protectives, e.g. against radiation
-
- 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
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- 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 low content of divalent soluble iron and containing an iodine-containing reducing agent.
- 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.
- This invention is made
- An object is to provide an aqueous solution.
- 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.
- an additive that suppresses the decrease
- the inventors surprisingly found that even when reducing compounds, Na bromide, Na hydrogen sulfite, Na sulfide, Na thioglycolate, glucose, and ascorbic acid were added.
- the present inventors have found that the decrease in stability of hyaluronic acid molecules due to divalent soluble iron is not suppressed, and that the addition often reduces the stability, thereby completing the present invention.
- an aqueous solution containing hyaluronic acid or a salt thereof containing a divalent soluble iron content of 5 ppb or less and containing an iodine-containing reducing agent is provided.
- 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 present invention also includes a step of dissolving hyaluronic acid or a salt thereof and a composition containing divalent soluble iron and an iodine-containing reducing agent in an aqueous solution.
- the present invention also includes a step of dissolving hyaluronic acid or a salt thereof and a composition containing divalent soluble iron and an iodine-containing reducing agent in an aqueous solution. Stabilization of an aqueous solution containing 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 an aqueous solution so that the concentration of the acid or salt thereof is 10 mg / mL A promotion method is provided.
- the reducing agent 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 is significantly improved. Proven in examples. Therefore, according to this stabilization promoting method, stabilization of an aqueous solution containing hyaluronic acid or a salt thereof can be significantly promoted.
- a stabilizer for stabilizing an aqueous solution containing a hyaluronic acid having a content of divalent soluble iron of 5 ppb or less or a salt thereof containing an iodine-containing reducing agent is provided.
- This stabilizer is contained in an aqueous solution containing hyaluronic acid or a salt thereof having a divalent soluble iron content of 5 ppb or less, it can be remarkably stabilized.
- the content of divalent soluble iron is 5 ppb or less and contains an iodine-containing reducing agent, an aqueous solution containing hyaluronic acid or a salt thereof having high stability is obtained.
- FIG. 1 is a graph showing changes in the intrinsic viscosity residual rate when sodium hyaluronate powder is added to an aqueous solution containing divalent soluble iron and Na iodide.
- One embodiment of the present invention is an aqueous solution containing hyaluronic acid or a salt thereof containing a divalent soluble iron content of 5 ppb or less and containing an iodine-containing reducing agent.
- 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 iodine-containing reducing agent may be, for example, metal iodide compounds.
- metal iodide compounds include sodium iodide, potassium iodide, calcium iodide, and magnesium iodide.
- 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 reducing agent contained in the aqueous solution containing the hyaluronic acid or a salt thereof of the present embodiment is, for example, 5, 10, 30, 50, 100, 150, 300, 500, 800, 1000, 1500, 2000, It may be 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 100 ⁇ 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 step of dissolving a composition containing hyaluronic acid or a salt thereof and divalent soluble iron and an iodine-containing reducing agent in the 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 It can be obtained by a method for producing an aqueous solution containing the salt. 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, Polyethylene glycol, etc.), preservatives (eg, benzyl alcohol, phenol, etc.), antioxidants and the like.
- a buffer eg, phosphate buffer, sodium acetate buffer
- a soothing agent eg, lidocaine hydrochloride, procaine hydrochloride, etc.
- a stabilizer eg, human serum albumin, Polyethylene
- 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 an iodine-containing reducing agent in an aqueous solution, wherein the composition comprises hyaluronic acid or Method for promoting stabilization of an aqueous solution containing 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 the salt is 10 mg / mL It is.
- 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 reducing agent can be used as a raw material for an aqueous solution stabilizer 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). 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. 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. 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 (No. 23 to 34). 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.
- glycine, L-aspartate Na, and purified sucrose are non-reducing compounds.
- Na iodide, K iodide, Na bromide, Na bisulfite, Na sulfide, Na thioglycolate, dextrose, and ascorbic acid are reducing compounds.
- the aqueous solution in which the sodium hyaluronate powder prepared in Example 1 was dissolved contained Na iodide or K iodide to improve the stability of the aqueous hyaluronate solution. Moreover, even if it is a compound which has a reducing property like Na iodide or K iodide, it is rather stable when Na bisulfite, Na sulfide, Na thioglycolate, glucose, and ascorbic acid are added. The sex was decreasing.
- 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. 35 to 41). 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 iodide or K iodide.
- Example 4 Na iodide was dissolved at a concentration shown in Table 7 in an aqueous solution containing 2 mM phosphate buffer and 0.9% sodium chloride (No. 42 to 48). 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 Na iodide at 10 ⁇ g / mL or more, thereby improving the stability of the aqueous hyaluronate solution. Moreover, the improvement of the stability became moderate around 100 ⁇ g / mL of sodium iodide.
- Example 5 Na iodide was dissolved in an aqueous solution containing 2 mM phosphate buffer and 0.9% sodium chloride so as to have a concentration of 1000 ⁇ g / mL. Furthermore, iron chloride (II) having a concentration shown in Table 8 was added to each aqueous solution (No. 49 to 54). 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.
- II iron chloride having a concentration shown in Table 8
- Fig. 1 shows the results of Table 8 and Table 3 as graphs. From FIG. 1, it can be seen that the stability of the aqueous solution of sodium hyaluronate is improved when Na iodide is contained at 1000 ⁇ g / mL in a 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 iodide, 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. Moreover, since it is suitable for long-term storage, the cost can be reduced.
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Abstract
Description
第一に特許文献1の生産方法では、硫酸第一鉄(硫酸鉄(II)、FeSO4)を大量に培地に添加しているため、精製後のヒアルロン酸含有溶液に鉄が混入しやすいと考えられる。また、硫酸第一鉄を大量に含む培地から鉄を取り除くには、通常よりも多くのコストが必要になる。
本発明の一実施形態は、2価の溶解性鉄の含有率が5ppb以下であり、ヨウ素含有の還元剤を含む、ヒアルロン酸またはその塩を含む水溶液である。このような組成からなるヒアルロン酸またはその塩を含む水溶液は、後述する実施例で実証されているように、保存後の極限粘度残存率が高く、物理的な安定性に優れている。また、長期保存後または長期時間経過後にも粘度や品質の低下が生じにくく、例えば医薬品・化粧品・食品等の原材料に好適である。
本実施形態のヒアルロン酸またはその塩を含む水溶液は、医薬組成物の原材料として使用できる。この場合、上記医薬組成物は安定性に優れたヒアルロン酸またはその塩を含む水溶液を含むため、長期保存後にも粘度や品質の低下が生じにくい。また、例えば関節内またはその周辺に投与した場合に、患部に長時間または所望の時間滞留することができる。この医薬組成物の剤形は特に限定されないが、関節等の患部へ直接投与することができるという観点からは注射剤が好ましい。注射剤の容器としては、例えばシリンジ、バイアル、またはアンプルを使用できる。投与に際しては、単独で投与することも可能ではあるが、薬理学的に許容される1つまたはそれ以上の担体もしくは賦形剤と一緒に混合し、製剤学の技術分野においてよく知られる任意の方法により製造した医薬製剤として提供することが好ましい。この医薬組成物は投与形態に合わせて、緩衝剤(例えば、リン酸塩緩衝液、酢酸ナトリウム緩衝液)無痛化剤(例えば、塩酸リドカイン、塩酸プロカインなど)、安定剤(例えば、ヒト血清アルブミン、ポリエチレングリコールなど)、保存剤(例えば、ベンジルアルコール、フェノールなど)、酸化防止剤などと配合してもよい。またこの医薬組成物は、添加剤としてリン酸水素ナトリウム、結晶リン酸二水素ナトリウム、塩化ナトリウムを含んでいてもよい。調整された医薬組成物は、例えばヒトや哺乳動物(例えばラット、マウス、ウサギ、イヌ、サル、ヒツジ、ブタ、ウシ、ネコなど)に対して投与することができる。なお医薬組成物には、予防を目的として使用される組成物を含む。
他の実施形態は、ヒアルロン酸またはその塩、および2価の溶解性鉄を含有する組成物と、ヨウ素含有の還元剤と、を水溶液に溶解させる工程を含み、上記組成物は、ヒアルロン酸またはその塩の濃度が10mg/mLとなるように水溶液に溶解した時の、水溶液中の2価の溶解性鉄の含有率が5ppb以下である、ヒアルロン酸またはその塩を含む水溶液の安定化促進方法である。この方法によれば、物理的な安定性が高い、ヒアルロン酸またはその塩を含む水溶液を得ることができる。またこの方法は、複雑な工程を必ずしも必要とせず、利便性に優れている。
以下の手順で、ヒアルロン酸Na水溶液を調整した。まず、グルコース5%、リン酸第1カリウム0.2%、ポリペプトン1.0%、酵母エキス0.5%からなる培地1リットルを加熱殺菌後、ストレプトコッカス・エキFM-100(微工研条寄第9027号)を接種した。空気を1vvmで通気しながら、撹拌200回転/分、温度33℃、pH8.5(20%水酸化ナトリウムの自動滴下によるコントロール)で20時間培養した。この液を菌体ろ過装置によりろ過し、水に対して12時間透析して透析膜内のヒアルロン酸溶液を回収した。回収容器は、鉄の混入を防ぐため、内表面がガラス製のものを用いた。ここに塩化ナトリウムを2.5%となるように添加し、エタノールをヒアルロン酸溶液の2倍量加えてヒアルロン酸Naを沈殿させた。沈殿をエタノールで5回洗浄し、不純物を十分に洗い流してから40℃で10時間風乾し、ヒアルロン酸Naの粉末を得た。
実施例1に記載の手順でストレプトコッカス・エキFM-100を培養し、特許文献3(特開2008-280430)の実施例1に記載の手順と同様の手順で、ヒアルロン酸Na水溶液を精製した。具体的には、まず、グルコース5%、リン酸第1カリウム0.2%、ポリペプトン1.0%、酵母エキス0.5%からなる培地1リットルを加熱殺菌後、ストレプトコッカス・エキFM-100を接種した。空気を1vvmで通気しながら、撹拌200回転/分、温度33℃、pH8.5(20%水酸化ナトリウムの自動滴下によるコントロール)で20時間培養した。培養液を、イオン交換水を用いて10倍に希釈し、その2.5L水溶液に活性炭(武田薬品社製の白鷺RW50-T)を5g、パーライト(三井金属鉱業株式会社のロカヘルプ♯409)を30g添加して1時間処理し、ヌッチェを用いて濾過した。この操作を2回繰り返して培地中の有機成分を除去し、ヒアルロン酸Na含有液を調整した。次に、内径15mm、高さ300mmのクロマトカラムに三菱化学社製ダイヤイオンCR11を68ml充填し、樹脂を再生した。このクロマトカラムに上記ヒアルロン酸Na含有液2.5Lを、SV=18(1200ml/hr)で通液した。クロマトカラム通過液1Lに食塩2gを溶解し、pH7に調整後、2-プロパノールで析出を行い、40℃で真空乾燥し、ヒアルロン酸Naの粉末を得た。
(1)溶解性鉄の分析
実施例1および比較例1で調製したヒアルロン酸Naの粉末を、2mMリン酸バッファーおよび0.9%塩化ナトリウムを含む水溶液に溶解し、ヒアルロン酸Naを5、8、10、12、または15mg/mL含有するヒアルロン酸Na水溶液をそれぞれ調製した(No.1~10)。次に、それぞれの水溶液について、鉄量2価の溶解性鉄量、2価および3価の溶解性鉄量、および全鉄量を下記(1-1)~(1-3)の手順で測定した。全鉄量には溶解性および不溶解性の鉄量を含む。鉄量2価の溶解性鉄量、2価および3価の溶解性鉄量、および全鉄量の検出限界は、5ppbであった。
a)ヒアルロン酸Na水溶液2.75gをサンプル瓶に分取する。
b)チオシアン酸カリウム溶液0.1mL、1,10-フェナントロリン溶液0.05mLを添加して混合する。
c)約10mLに希釈した後、約10分間放置する。
d)クロロホルム5mLを加えた後、密栓する。5分間振り混ぜ、抽出する。
e)静置後、クロロホルム相を4mL分取し、別のサンプル瓶に移す。
f)ホットプレート上で蒸発乾固した後、濃硝酸0.5mLを加え酸分解する。
g)希硝酸(1+100)2mLを加え、残分を溶解する。
h)ICP発光分析でFeを定量する。
a)ヒアルロン酸Na水溶液2.75gをサンプル瓶に分取する。
b)塩酸ヒドロキシルアミン溶液0.2mLを添加する。
c)1,10-フェナントロリン溶液0.2mL、チオシアン酸カリウム溶液0.5mLを添加する。
d)約10mLに希釈した後、約10分間放置する。
e)4-メチル-2-ペンタノン5mLを加えた後、密栓する。1分間振り混ぜ、抽出する。
f)静置後、4-メチル-2-ペンタノン相を4mL分取し、別のサンプル瓶に移す。
g)ホットプレート上で蒸発乾固した後、濃硝酸0.5mLを加え酸分解する。
h)希硝酸(1+100)2mLを加え、残分を溶解する。
i)ICP発光分析でFeを定量する。
a)ヒアルロン酸Na水溶液2.75gをサンプル瓶に分取する。
b)HCl(1+1)0.1mLを加えホットプレートで加熱する。
c)上記(1-2)2価および3価の溶解性鉄の分析方法溶解性鉄の分析のb)以降の操作を行う。
上記(1-1)~(1-3)の分析結果を表1に示す。
2mMリン酸バッファーおよび0.9%塩化ナトリウムを含む水溶液に対して、実施例1または比較例1で調製したヒアルロン酸Naの粉末を、ヒアルロン酸Na濃度が10mg/mLとなるようにそれぞれ溶解した(No. 11~12)。さらに、80°Cで24時間保存した後、極限粘度および極限粘度残存率(%)を測定した結果を表2に示す。なお、極限粘度は第十五改正日本薬局方第二追補「精製ヒアルロン酸ナトリウム」の粘度の項の記載に従い測定した。その結果を表2に示す。
2mMリン酸バッファーおよび0.9%塩化ナトリウムを含む水溶液に対して、表5に示すように各種添加物を溶解した(No.23~34)。次に、それぞれの水溶液に実施例1で調製したヒアルロン酸Naの粉末を、濃度が10mg/mLとなるように溶解した。さらに、80°Cで24時間保存した後、極限粘度および極限粘度残存率(%)を測定した。添加物のうち、グリシン、L-アスパラギン酸Na、精製白糖は非還元性の化合物である。ヨウ化Na、ヨウ化K、臭化Na、亜硫酸水素Na、硫化Na、チオグリコール酸Na、ブドウ糖、およびアスコルビン酸は還元性の化合物である。
ヨウ化Na:和光純薬社、194-02272
ヨウ化K:和光純薬社、168-03975
グリシン:和光純薬社、036435
L-アスパラギン酸Na:和光純薬社、193-01262
臭化Na:和光純薬社、193-01505
亜硫酸水素Na:和光純薬社、190-01375
硫化Na:和光純薬社、197-03362
チオグリコール酸Na:和光純薬社、590-11762
ブドウ糖:和光純薬社、076-05705
精製白糖(ショ糖):和光純薬社、196-13705
アスコルビン酸Na:和光純薬社、196-01252
2mMリン酸バッファーおよび0.9%塩化ナトリウムを含む水溶液に対して、表6に示すように各種添加物を溶解した(No.35~41)。さらに、それぞれの水溶液に塩化鉄(II)を11.3ppb(2価の溶解性鉄として5ppb)添加した。次に、それぞれの水溶液に実施例1で調製したヒアルロン酸Naの粉末を、濃度が10mg/mLとなるように溶解した。その後、80°Cで24時間保存した後、極限粘度および極限粘度残存率(%)を測定した。
2mMリン酸バッファーおよび0.9%塩化ナトリウムを含む水溶液に対して、表7に示す濃度でヨウ化Naを溶解した(No.42~48)。次に、それぞれの水溶液に実施例1で調製したヒアルロン酸Naの粉末を、濃度が10mg/mLとなるように溶解した。さらに、80°Cで24時間保存した後、極限粘度および極限粘度残存率(%)を測定した。
2mMリン酸バッファーおよび0.9%塩化ナトリウムを含む水溶液に対して、ヨウ化Naを、濃度が1000μg/mLとなるように溶解した。さらに、それぞれの水溶液に表8に示す濃度の塩化鉄(II)を添加した(No.49~54)。次に、それぞれの水溶液に実施例1で調製したヒアルロン酸Naの粉末を、濃度が10mg/mLとなるように溶解した。その後、80°Cで24時間保存した後、極限粘度および極限粘度残存率(%)を測定した。
Claims (12)
- 2価の溶解性鉄の含有率が5ppb以下であり、ヨウ素含有の還元剤を含有する、ヒアルロン酸またはその塩を含む水溶液。
- 前記ヒアルロン酸またはその塩の濃度が、5~15mg/mLである、請求項1に記載のヒアルロン酸またはその塩を含む水溶液。
- 前記ヨウ素含有の還元剤が、金属ヨウ化化合物類である、請求項1または2に記載のヒアルロン酸またはその塩を含む水溶液。
- 前記還元剤の含有量が10~10000μg/mLである、請求項1~3いずれかに記載のヒアルロン酸またはその塩を含む水溶液。
- 前記ヒアルロン酸またはその塩の平均分子量が100万以上である、請求項1~4いずれかに記載のヒアルロン酸またはその塩を含む水溶液。
- 前記ヒアルロン酸の前記塩が、ヒアルロン酸ナトリウムである、請求項1~5いずれかに記載のヒアルロン酸またはその塩を含む水溶液。
- 請求項1~6いずれかに記載のヒアルロン酸またはその塩を含む水溶液を含む、医薬組成物。
- 請求項1~6いずれかに記載のヒアルロン酸またはその塩を含む水溶液を含む、関節症治療用注射剤。
- 請求項1~6いずれかに記載のヒアルロン酸またはその塩を含む水溶液を含む、化粧料組成物。
- ヒアルロン酸またはその塩、および2価の溶解性鉄を含有する組成物と、
ヨウ素含有の還元剤と、
を水溶液に溶解させる工程を含み、
前記組成物は、ヒアルロン酸またはその塩の濃度が10mg/mLとなるように水溶液に溶解した時の、水溶液中の2価の溶解性鉄の含有率が5ppb以下である、
ヒアルロン酸またはその塩を含む水溶液の生産方法。 - ヒアルロン酸またはその塩、および2価の溶解性鉄を含有する組成物と、
ヨウ素含有の還元剤と、
を水溶液に溶解させる工程を含み、
前記組成物は、ヒアルロン酸またはその塩の濃度が10mg/mLとなるように水溶液に溶解した時の、水溶液中の2価の溶解性鉄の含有率が5ppb以下である、
ヒアルロン酸またはその塩を含む水溶液の安定化促進方法。 - ヨウ素含有の還元剤を含む、
2価の溶解性鉄の含有率が5ppb以下のヒアルロン酸またはその塩を含む水溶液を安定化するための、安定化剤。
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