Suppr超能文献

公鸡胸肌和股外侧肌中胶原蛋白含量及结构的生长变化

Growth changes of the collagen content and architecture in the pectoralis and iliotibialis lateralis muscles of cockerels.

作者信息

Nakamura Y N, Iwamoto H, Shiba N, Miyachi H, Tabata S, Nishimura S

机构信息

Graduate School of Bioresource and Bioenvironmental Sciences, Graduate School, Kyushu University, Fukuoka-shi 812-8581, Japan.

出版信息

Br Poult Sci. 2004 Dec;45(6):753-61. doi: 10.1080/00071660400014309.

Abstract
  1. Growth changes of the collagen content and architecture in the pectoralis (PT) and iliotibialis lateralis (ITL) muscles were examined using cockerels from 1 to 14 weeks of age. 2. Total collagen content in PT muscle showed little change, but in ITL muscle reached a maximum at 5 weeks and thereafter decreased slightly until 14 weeks. The collagen content was markedly larger in ITL muscle after 5 weeks. Pyridinoline content of collagen increased abruptly from 5 to 14 weeks in both muscles, but no difference between muscle types was detected. 3. The cell size of the endomysial honeycombs increased with the development of myofibres, and the mesh size of the perimysium around the honeycombs enlarged. 4. In both muscles endomysia were an incomplete network of collagen fibrils with many foramina at one week, became a very thin membrane of felt-like fabric in 2 to 5 weeks and thereafter increased in thickness until 11 to 14 weeks. 5. Perimysial width around the secondary fasciculus differed between the muscle types after 5 weeks. In the wider perimysium of ITL muscle, the collagen fibres increased in number and size to make a stack of collagen bands around the fasciculus. In the narrower perimysium of PT muscle, a few platelets of collagen fibres also developed. 6. The perimysial collagen fibre at 1 to 2 weeks had a smooth surface and appeared to be composed of fine collagen fibrils. The fibre at 11 to 14 weeks showed a rugged surface and was composed of coarser collagen bundles that combined with each other into a net-like configuration with very slim meshes. 7. Our results showed that the collagenous components of chicken intramuscular connective tissue changed markedly during the early period of muscle growth in distribution, architecture and quality but with little difference in quantity.
摘要
  1. 使用1至14周龄的公鸡,研究胸肌(PT)和股外侧肌(ITL)中胶原蛋白含量和结构的生长变化。2. PT肌肉中的总胶原蛋白含量变化不大,但ITL肌肉中的总胶原蛋白含量在5周时达到最高,此后略有下降直至14周。5周后,ITL肌肉中的胶原蛋白含量明显更高。两种肌肉中胶原蛋白的吡啶啉含量在5至14周时均突然增加,但未检测到肌肉类型之间的差异。3. 肌内膜蜂窝状结构的细胞大小随着肌纤维的发育而增加,蜂窝状结构周围的肌束膜网眼大小增大。4. 在两种肌肉中,肌内膜在1周时是一个由许多小孔组成的不完整胶原纤维网络,在2至5周时变成非常薄的毡状膜,此后厚度增加直至11至14周。5. 5周后,次级肌束周围的肌束膜宽度在不同肌肉类型之间存在差异。在ITL肌肉较宽的肌束膜中,胶原纤维的数量和大小增加,在肌束周围形成一堆胶原带。在PT肌肉较窄的肌束膜中,也形成了一些胶原纤维小片。6. 1至2周时的肌束膜胶原纤维表面光滑,似乎由细胶原纤维组成。11至14周时的纤维表面粗糙,由较粗的胶原束组成,这些胶原束相互结合形成网状结构,网眼非常细小。7. 我们的结果表明,鸡肌肉内结缔组织的胶原成分在肌肉生长早期,在分布、结构和质量上发生了显著变化,但在数量上差异不大。

文献检索

告别复杂PubMed语法,用中文像聊天一样搜索,搜遍4000万医学文献。AI智能推荐,让科研检索更轻松。

立即免费搜索

文件翻译

保留排版,准确专业,支持PDF/Word/PPT等文件格式,支持 12+语言互译。

免费翻译文档

深度研究

AI帮你快速写综述,25分钟生成高质量综述,智能提取关键信息,辅助科研写作。

立即免费体验