新科学想法 › 文献管理 › 浏览文献

Articular cartilage in the knee joint of the African elephant, Loxodonta africana, Blumenbach 1797

宇晟添加于 2010-5-31 00:51 | 2017 次阅读 | 0 个评论

作者
Egger GF, Witter K, Weissengruber G, Forstenpointner G
摘要
Knee joints of one adult and three juvenile African elephants were dissected. The specific features of the articular cartilage with particular reference to matrix components were studied by light and electron microscopy and immunohistochemistry. The elephant knee joint cartilage contains an unusually low concentration of proteoglycans resulting in rather eosinophilic staining properties of the matrix. The very thick collagen fibers of the cartilage possibly represent collagen I. Except for the different thickness of cartilage at the weight-bearing surfaces of femur (approximately 6.7 mm) and tibia (approximately 11.2 mm) in juvenile elephants, light and electron microscopy did not reveal distinct topographical differences in cartilage structure, perhaps because of the high congruency of the articulating surfaces and resulting uniform load distribution in the knee. The number of cell profiles per section area of both femoral (approximately 950 cell profiles/mm(2)) and tibial cartilage (approximately 898 cell profiles/mm(2)) was low, indicating excessive matrix production by the chondrocytes during cartilage development. These unique properties could be a result of the enormous compressive load resting on the elephant knee. Maintenance of the equilibrium between biological function and resistance to compression seems to be crucial in the elephant knee joint cartilage. Any disturbance that interferes with this equilibrium appears to lead to arthrotic alterations, as particularly seen in captive elephants.
详细资料
- 关键词: Africa; Animals; Arthritis; Biomechanics; Cartilage, Articular/*anatomy & histology/cytology/*ultrastructure; Collagen; Compressive Strength; Elephants/*anatomy & histology; Knee Joint/*anatomy & histology/ultrastructure; Male; Microscopy, Electron, Transmission; Stress, Mechanical
- 文献种类:期刊
- 期刊名称: Journal of Morphology
- 期刊缩写: J Morphol
- 期卷页: 2008年第269卷第1期 118-127页
- 地址: Institute of Histology and Embryology, Department of Pathobiology, University of Veterinary Medicine, Vienna, Austria. gunter.egger@vu-wien.ac.at
- ISBN: 0022-2887
- 备注:PMID:17972268
所属群组

the world of tendon
相关链接 DOI URL

宇晟的文献笔记订阅

比较解剖学之三关节软骨

This paper is done by the same group of last paper.After the morphology investigation, they turned into the histology of the articular cartilage of the elephant.But as to me, it has its own significance.These methods and discussion is really what i need now.

管理选项： 导出文献