Domeniconi Raquel Fantin, Orsi Antonio Marcos, Beu Célia Cristina Leme, Felisbino Sérgio Luis
Post-graduate Program on Cell and Structural Biology, Institute of Biology, UNICAMP, Campinas, SP, Brazil.
Tissue Cell. 2007 Feb;39(1):47-57. doi: 10.1016/j.tice.2007.01.002. Epub 2007 Feb 22.
Principal cells of the ducts epididymis of the Mongolian gerbil showed ultrastructural characteristics of lining epithelium cells close related to processes of protein secretion, and transcytosis occurring between adjacent principal cells which were mainly verified in the initial segment. Principal cells also presented roles of fluid phase and adsorptive endocytoses, as well as autophagic and heterophagic lysosomal activities mainly observed in the caput epididymis. Columnar (principal) cells of the corpus epididymidis presented great number of variable vesicles and vacuoles distributed in all the cytoplasmic levels occurring a progressive coalescence pattern among them, which help to guarantee formation of cytoplasmic channels for fluid phase transport between the tubular lumen and epididymal interstitium. Clear cells were presented in the initial segment and predominately in the cauda epididymis epithelium of the gerbil and showed marked ultrastructural characteristics of endocytosis activities occurrence, perhaps directly related to the turnover of fluid phase of spermatozoa stored into the lumen of the distal tail. Other epididymal epithelium cells were verified and described such as basal, halo, apical and dark cells, but they did not presented special ultrastructural features.
蒙古沙鼠附睾管主细胞呈现出与蛋白质分泌过程密切相关的衬里上皮细胞的超微结构特征，以及主要在起始段相邻主细胞之间发生的转胞吞作用。主细胞还表现出液相和吸附性胞吞作用，以及主要在附睾头观察到的自噬和异噬溶酶体活性。附睾体的柱状（主）细胞呈现大量分布于所有细胞质水平的可变小泡和液泡，它们之间呈现出逐渐融合的模式，这有助于保证形成细胞质通道，用于管腔与附睾间质之间的液相运输。透明细胞出现在起始段，在沙鼠附睾尾上皮中占主导地位，显示出明显的内吞活动超微结构特征，可能与储存于远端尾部管腔中的精子液相周转直接相关。还证实并描述了其他附睾上皮细胞，如基底细胞、晕细胞、顶端细胞和暗细胞，但它们没有呈现出特殊的超微结构特征。
