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Seasonal Variation of the Intraepithelial Gland in Camel Epididymis with Special Reference to Autophagosome.
Microscopy and Microanalysis ( IF 2.9 ) Pub Date : 2019-06-18 , DOI: 10.1017/s1431927619014557
Fatma M Abdel-Maksoud 1 , Manal T Hussein 1 , Abdelraheim Attaai 1
Affiliation  

The key role of the epididymis is contributing to sperm storage, maturation, and survival. The epididymis of camel has a unique structure called the intraepithelial gland. The present work aimed to investigate the structure of the epididymal intraepithelial gland with special references to the seasonal variation. The samples were collected from the distal part of the corpus epididymes of completely healthy mature camels (Camelus dromedarius) in the breeding and nonbreeding seasons. Tomato lectin-positive material had been demonstrated within the epididymal spermatozoa. Here, we provide the first transmission electron microscopic study for the intraepithelial gland of camel epididymis detecting the autophagy during the nonbreeding season. The autophagosomes originated from the endoplasmic reticulum, surrounding mitochondria, and located mainly next to the basement membrane. This location is probably valuable for subsequent passing of their contents into the interstitium for possible recycling. The histochemical and ultrastructural characteristics of the gland in the breeding season indicated a hyperactive secretory microenvironment enriched with the glycoprotein-producing machinery, which could be controlled by androgens. The present data suggest that the camel intraepithelial gland has a significant impact on the reproductive activity through their secretory microenvironment during the breeding season. Moreover, it recycles the unused organelles or proteins for reuse or to supply energy under stress conditions in the nonbreeding season.

中文翻译:

骆驼附睾上皮内腺的季节性变化,特别涉及自噬体。

附睾的关键作用是促进精子的储存,成熟和存活。骆驼的附睾具有称为上皮内腺的独特结构。本工作旨在调查附睾上皮内腺的结构,并特别提及季节变化。在繁殖和非繁殖季节,从完全健康的成熟骆驼(骆驼属)的主体附睾远端收集样本。番茄凝集素阳性物质已在附睾精子内被证实。在这里,我们提供了骆驼附睾上皮内腺的第一个透射电子显微镜研究,以检测非繁殖季节的自噬。自噬体起源于线粒体周围的内质网,并且主要位于基底膜旁边。此位置可能对随后将其内容物传递到组织间进行可能的回收很有价值。繁殖季节腺体的组织化学和超微结构特征表明,富含糖蛋白生产机制的多动性分泌微环境可由雄激素控制。目前的数据表明,骆驼上皮内腺在繁殖季节通过其分泌的微环境对生殖活动具有重大影响。此外,它在非繁殖季节中在压力条件下回收未使用的细胞器或蛋白质,以供再利用或提供能量。此位置可能对随后将其内容物传递到间质馆以进行可能的回收很有价值。繁殖季节腺体的组织化学和超微结构特征表明,富含糖蛋白生产机制的多动性分泌微环境可由雄激素控制。目前的数据表明,骆驼上皮内腺在繁殖季节通过其分泌的微环境对生殖活动具有重大影响。此外,它在非繁殖季节中在压力条件下回收未使用的细胞器或蛋白质,以供再利用或提供能量。此位置可能对随后将其内容物传递到间质馆以进行可能的回收很有价值。繁殖季节腺体的组织化学和超微结构特征表明,富含糖蛋白生产机制的多动性分泌微环境可由雄激素控制。目前的数据表明,骆驼上皮内腺在繁殖季节通过其分泌的微环境对生殖活动具有重大影响。此外,它在非繁殖季节中在压力条件下回收未使用的细胞器或蛋白质,以供再利用或提供能量。繁殖季节腺体的组织化学和超微结构特征表明,富含糖蛋白生产机制的多动性分泌微环境可由雄激素控制。目前的数据表明,骆驼上皮内腺在繁殖季节通过其分泌的微环境对生殖活动具有重大影响。此外,它在非繁殖季节中在压力条件下回收未使用的细胞器或蛋白质,以供再利用或提供能量。繁殖季节腺体的组织化学和超微结构特征表明,富含糖蛋白生产机制的多动性分泌微环境可由雄激素控制。目前的数据表明,骆驼上皮内腺在繁殖季节通过其分泌的微环境对生殖活动具有重大影响。此外,它在非繁殖季节中在压力条件下回收未使用的细胞器或蛋白质,以供再利用或提供能量。
更新日期:2019-11-01
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