JP4041856B2 - 変形性関節症の治療剤 - Google Patents
変形性関節症の治療剤 Download PDFInfo
- Publication number
- JP4041856B2 JP4041856B2 JP2005163086A JP2005163086A JP4041856B2 JP 4041856 B2 JP4041856 B2 JP 4041856B2 JP 2005163086 A JP2005163086 A JP 2005163086A JP 2005163086 A JP2005163086 A JP 2005163086A JP 4041856 B2 JP4041856 B2 JP 4041856B2
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- Prior art keywords
- hyaluronan
- osteoarthritis
- salt
- joint
- administration
- 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.)
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Description
本実施例では、変形性関節症を自然発症するC57BL/6マウスにHA4を投与し、その効果を検討した。
20週齢の雄性C57BL/6マウスを日本チャールスリバーより購入し、変形性関節症を発症した個体を使用した。群構成は、陰性対照(生理食塩水)群及びHA4(100mg/10ml/kg)経口投与群とした。
本実施例では、10mg/mlのHA4を調整した。具体的に、HA4は、Tawadaらの方法(Tawada A, Masa T, Oonuki Y, Watanabe A, Matsuzaki Y, Asari A. Large-scale preparation, purification, and characterization of hyaluronan oligosaccharides from 4-mers to 52-mers. Glycobiology. 2002; 12(7):421-6.)により調製し、生理食塩水で濃度を調節した。また、対照としては生理食塩水(生食)を調整した。
変形性関節症の治癒効果を肉眼にて判断した。具体的には、各群に属する全ての個体について、膝関節軟骨表面(脛骨および大腿骨)に墨汁を塗布後、ガーゼで拭き取り、墨汁の障害部位に残存する程度を以下のようにブラインドで肉眼的に5段階評価した(表1)。なお、本評価方法については、Chang DG, Iverson EP, Schinagl RM, Sonoda M, Amiel D, Coutts RD, Sah RL. Quantitation and localization of cartilage degeneration following the induction of osteoarthritis in the rabbit knee. Osteoarthritis Cartilage. 1997 Sep;5(5):357-72.参照。
変形性関節症の肉眼所見の結果を表2に示す。
Claims (3)
- −D−グルクロン酸−β−1,3−D−N−アセチルグルコサミン−β−1,4−を1単位とし、これを1個〜10個含む2糖〜20糖の低分子量ヒアルロナンを有効成分とする変形性関節症治療剤。
- 上記低分子量ヒアルロナンのうち、1単位を2個含む4糖であることを特徴とする請求項1記載の変形性関節症治療剤。
- 経口投与剤であることを特徴とする請求項1または2記載の変形関節症治療剤。
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