DE3607897A1 - Verfahren zur herstellung einer chemisch modifizierten hyaluronsaeurezubereitung - Google Patents
Verfahren zur herstellung einer chemisch modifizierten hyaluronsaeurezubereitungInfo
- Publication number
- DE3607897A1 DE3607897A1 DE19863607897 DE3607897A DE3607897A1 DE 3607897 A1 DE3607897 A1 DE 3607897A1 DE 19863607897 DE19863607897 DE 19863607897 DE 3607897 A DE3607897 A DE 3607897A DE 3607897 A1 DE3607897 A1 DE 3607897A1
- Authority
- DE
- Germany
- Prior art keywords
- hyaluronic acid
- water
- solvent
- chemically modified
- mixture
- 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.)
- Granted
Links
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P7/00—Drugs for disorders of the blood or the extracellular fluid
- A61P7/02—Antithrombotic agents; Anticoagulants; Platelet aggregation inhibitors
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Molecular Biology (AREA)
- Polymers & Plastics (AREA)
- Biochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Animal Behavior & Ethology (AREA)
- Diabetes (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pharmacology & Pharmacy (AREA)
- Hematology (AREA)
- General Chemical & Material Sciences (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Cosmetics (AREA)
Description
(US-PS 4 303 676, E.A. Balazs). Folglich stellt die Entfernung von Proteinen die erste Schwierigkeit bei der
Gewinnung reiner HA aus tierischem Gewebe dar. Es wurde
festgestellt, daß sich bei Anwendung der vorstehend genannten vorläufigen Behandlung des Gewebes ein Wasserextrakt von HY mit wesentlich geringerem Proteingehalt ergibt als beim Weglassen einer solchen Behandlung.
wässrigen Extraktion unlöslich sind.
einem wasserhaltigen Medium umsetzbar ist. Es hat sich
erwiesen, daß der vorteilhafteste Stoff Formaldehyd ist. Es können aber auch andere Aldehyde, wie GlutaraIdehyd
oder Glyoxal beim erfindungsgemäßen Verfahren Verwendung finden.
Löslichkeit in Wasser. Deshalb wird bevorzugt, die Behandlung des Gewebes in einem Gemisch aus Wasser und einem mit Wasser mischbaren organischen Lösungsmittel durchzuführen. Das Lösungsmittel sollte mit dem für die Immobilisierung des Proteins verwendeten Reagens nicht reagieren. Zu diesen Lösungsmitteln gehören niedere Ketone,
Molekulargewicht aus Lichtstreudaten, χ 10 6
Molekulargewicht aus Sedimentations-Diffusionsdaten, χ 10
1 Gew.%-Lösung in 0,15 M wässrigem
NaCl: Scherviskosität bei Schergeschwindigkeit 0,055~1, Pa.s 969 305 Dynamische Speichermoduli (G1)
al | ,28 | 3 | HA | 30 | |
4 | 729 | ,30 | 562 | 86 | |
3 | 2, | ||||
13 | 2, | ||||
FaLL können Verknüpfungen zwischen einem HA-MakromoLeküL und einem ProteinanteiL und einem weiteren HA-MakromoleküL oder zwischen einem kovaLent an zwei HA-MakromoLeküLe gebundenen Protein gebiLdet werden.
kLeiner Mengen kovaLenter Verknüpfungen in das Produkt
gemäß der Erfindung mögLich sind.
während des Gewinnungsprozesses, vermutLich durch Einführen kLeiner ZahLen von Verknüpfungen in die HA-MakromoLeküLe, wobei der Grad der Modifizierung ausreicht, um die eLastischen Eigenschaften der PoLymerisat Lösungen wesentlich zu erhöhen,ohne eine nachteilige Auswirkung auf die günstigen Eigenschaften von HA zu haben, wie dessen Fähigkeit, stark viskose Lösungen in wässrigem Medium zu Liefern, BiokompatibiLität, usw.
HyaLuronsäure, nämlich HY kann erfolgreich für viele
Zwecke auf dem biomedizinischen Gebiet und in der Kosmetik eingesetzt werden, z. B. als Werkzeug in der Organchirurgie, als Beschichtung, um die Biokompatibilität
verschiedener Stoffe zu verbessern, als Bestandteil verschiedener pharmazeutischer Produkte, für HautpfLegeerzeugnisse und dgl. Die verbesserten Eigenschaften dieses Polymerisats, wie seine größere Elastizität ergeben beim Gebrauch von HY wesentliche Vorteile.
beispielsweise Verknüpfung mittels herkömmlicher Vernet-
Claims (28)
gekennzeichnet durch
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/710,929 US4713448A (en) | 1985-03-12 | 1985-03-12 | Chemically modified hyaluronic acid preparation and method of recovery thereof from animal tissues |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3607897A1 true DE3607897A1 (de) | 1986-09-18 |
DE3607897C2 DE3607897C2 (de) | 1992-02-27 |
Family
ID=24856100
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19863607897 Granted DE3607897A1 (de) | 1985-03-12 | 1986-03-10 | Verfahren zur herstellung einer chemisch modifizierten hyaluronsaeurezubereitung |
DE3645226A Expired - Lifetime DE3645226C2 (de) | 1985-03-12 | 1986-03-10 | |
DE3645191A Expired - Lifetime DE3645191C2 (de) | 1985-03-12 | 1986-03-10 |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3645226A Expired - Lifetime DE3645226C2 (de) | 1985-03-12 | 1986-03-10 | |
DE3645191A Expired - Lifetime DE3645191C2 (de) | 1985-03-12 | 1986-03-10 |
Country Status (12)
Country | Link |
---|---|
US (1) | US4713448A (de) |
JP (2) | JPS61207401A (de) |
AU (1) | AU560956B2 (de) |
BE (1) | BE904357A (de) |
CA (1) | CA1276143C (de) |
CH (1) | CH670092A5 (de) |
DE (3) | DE3607897A1 (de) |
FR (1) | FR2582002B1 (de) |
GB (1) | GB2172295B (de) |
IT (1) | IT1191981B (de) |
NL (1) | NL186576C (de) |
SE (1) | SE468830B (de) |
Families Citing this family (148)
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- 1986-01-20 GB GB08601304A patent/GB2172295B/en not_active Expired
- 1986-01-31 AU AU52891/86A patent/AU560956B2/en not_active Expired
- 1986-02-28 JP JP61045134A patent/JPS61207401A/ja active Granted
- 1986-03-06 FR FR8603144A patent/FR2582002B1/fr not_active Expired
- 1986-03-06 BE BE0/216373A patent/BE904357A/fr not_active IP Right Cessation
- 1986-03-10 IT IT19684/86A patent/IT1191981B/it active
- 1986-03-10 DE DE19863607897 patent/DE3607897A1/de active Granted
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- 1986-03-11 CH CH992/86A patent/CH670092A5/fr not_active IP Right Cessation
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Also Published As
Publication number | Publication date |
---|---|
CA1276143C (en) | 1990-11-13 |
AU7618087A (en) | 1987-10-29 |
IT8619684A1 (it) | 1987-09-10 |
SE8601135L (sv) | 1986-09-13 |
NL8600644A (nl) | 1986-10-01 |
SE468830B (sv) | 1993-03-29 |
SE8601135D0 (sv) | 1986-03-11 |
AU583464B2 (en) | 1989-04-27 |
JPH01198602A (ja) | 1989-08-10 |
JPH0353321B2 (de) | 1991-08-14 |
NL186576C (nl) | 1991-01-02 |
US4713448A (en) | 1987-12-15 |
JPS61207401A (ja) | 1986-09-13 |
GB8601304D0 (en) | 1986-02-26 |
AU560956B2 (en) | 1987-04-30 |
DE3645226C2 (de) | 1993-07-15 |
DE3645191C2 (de) | 1992-12-10 |
FR2582002B1 (fr) | 1988-01-15 |
DE3607897C2 (de) | 1992-02-27 |
CH670092A5 (de) | 1989-05-12 |
NL186576B (nl) | 1990-08-01 |
BE904357A (fr) | 1986-06-30 |
FR2582002A1 (fr) | 1986-11-21 |
GB2172295A (en) | 1986-09-17 |
AU5289186A (en) | 1986-09-18 |
IT8619684A0 (it) | 1986-03-10 |
IT1191981B (it) | 1988-03-31 |
GB2172295B (en) | 1989-01-05 |
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