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中国临床药理学与治疗学 ›› 2005, Vol. 10 ›› Issue (10): 1181-1185.

• 研究原著 • 上一篇    下一篇

脱氢表雄酮对大鼠骨关节炎影响的实验研究

黄义星, 陈廖斌, 江晖, 易先宏, 汪鹏   

  1. 武汉大学中南医院骨科, 武汉 430071, 湖北
  • 收稿日期:2005-08-13 修回日期:2005-09-23 发布日期:2020-11-23
  • 通讯作者: 陈廖斌,男,博士,硕士生导师,教授,研究方向:骨关节病。Tel:027-67813224 E-mail:clhwhcbd@public.wh.hb.cn
  • 作者简介:黄义星,男,硕士研究生,研究方向:骨关节病。Tel:027-87330045 E-mail:sunnykninght@126.com

Experimental study on the effects of dehydroepiandrosterone on osteoarthritis in rats

HUANG Yi-xing, CHEN Liao-bin, WANG Hui, YI Xian-hong, WANG Peng   

  1. Department of Orthopaedics, Zhongnan Hospital, Wuhan Uniersity Wuhan 430071, Hubei, China
  • Received:2005-08-13 Revised:2005-09-23 Published:2020-11-23

摘要: 目的:;研究脱氢表雄酮(DHEA)对大鼠实验性骨关节炎(OA)的影响。方法: 40 只大鼠随机分4组:正常对照组、模型对照组、DHEA 大、小剂量组。除正常对照组外,其余3组右膝木瓜蛋白酶关节腔注射法建立OA 模型。然后DHEA 大、小剂量组两组右膝分别关节腔注射50 μmol· L-1 和100μmol·L-1 的DHEA 溶液150 μl,正常对照组、模型对照组两组右膝均注入生理盐水150 μl,每周2 次,注射5周。6周后处死大鼠,大体形态学、组织学、生化及免疫组化的方法评价关节软骨情况。结果: 手术显微镜下观察,见DHEA 大、小剂量组两组软骨损害均较模型对照组明显减轻。DHEA 大、小剂量组Mankin's评分、关节腔冲洗液一氧化氮含量、滑膜丙二醛含量及关节软骨基质金属蛋白酶,1和9的表达均较模型对照、组显著降低, DHEA 大剂量组上述指标均较DHEA 小剂量组显著降低。且两组关节腔冲洗液和血清超氧化物歧化酶活性均较模型对照组显著升高, DHEA 大剂量组上述指标升高均较DHEA小剂量组更明显。结论: DHEA 对OA 软骨有保护作用,且存在剂量依赖性,保护机制可能是抑制关节软骨基质金属蛋白酶表达、减少一氧化氮释放和增强抗氧化作用。

关键词: 脱氢表雄嗣, 骨关节炎, 基质金属蛋白酶, 超氧化物歧化酶, 丙二醛, 一氧化氮

Abstract: AIM: To investigate the effects of delydmepiandrosterone (DHEA on experimental osteoarthritis in rats.METHODS: Forty rats were randomly divided into four groups. Group A is normal control group Osteoarthritic models of rats were established by intraarticular injections of papain into the right knee joints of groups B, C and D. Then the right knee joints of rats in groups C and D, respectively, received 150μl intraarticular injections of DHEA at a concentration of 50μmol·L-1 and 100μmol·L-1 and the right knee joints of rats in groups A and B both received 150 ul physiological saline, twice weekly for five weeks. Six weeks laterall rats were sacrificed, and the articular cartilage was assessed by gross morphologic, histologic, biochemical and immunohistochemical methods.RESULTS: The cartilagedamage in groups C and D was much less than that ingroup B through observation under a surgical microscope.The Mankin s score, nitric oxide (NO) in the douche of articular cavity, malondialdehyde (MDA) in synoviumthe expression of matrix metalloproteinase-1 and 9 in articular cartilage in groups C and D decreased in comparison with group B, and the for egoingndexes Ingroup Ddecreased signiticantly compared with group C. However the activities of superoxide dismutase (SOD) in thedouche of articular cavity and blood serumand D increased in comparison with group B, and the foregoing indexes in group D increased significantly compared with group C.CONCLUSIONS: DHEA shows acartilage-protecting effect which is in a dosage-dependentmanner. The mechanism probably is to inhibit the expression of matrix metalloproteinases and to decrease the release of (NO and enhance the antioxidation.

Key words: dehydroepiandrosterone, osteoarthritis, matrix metalloproteinases superoxide dismutase, malondialdehyde, nitric oxide

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