Abe H, Oikawa T
Research Institute for the Functional Peptides, Yamagata, Japan.
Anat Rec. 1992 Jul;233(3):399-408. doi: 10.1002/ar.1092330307.
The luminal surfaces of epithelial cells in the fimbriae, ampulla, isthmus, and utero-tubal junction of the oviducts of the prolific Chinese Meishan pig at follicular and luteal phases of the estrous cycle were examined by scanning electron microscopy. Marked cyclic changes were observed on the surfaces of cells in the fimbriae and ampulla, but little change was found in the isthmus and at the utero-tubal junction. The cells of the fimbrial epithelium in the follicular phase were densely ciliated, and the cilia partially concealed the bulbous processes of the secretory cells. In the luteal phase, the secretory cells predominated in the epithelium, and most of the ciliated cells were hidden by the processes of the secretory cells. The ampullar epithelium showed similar changes, but to a lesser extent. In the isthmus and at the utero-tubal junction, the secretory cells had many microvilli on their bulbous processes at the follicular phase, but they were flat and the microvilli were fewer in number and shorter in length during the luteal phase. Conspicuous solitary cilia protruded from the surfaces of secretory cells in the fimbriae and ampulla during the luteal phase. These results demonstrate that there are regional variations in the cyclic changes associated with the oviductal epithelial cells of the Chinese Meishan pig.
运用扫描电子显微镜，对处于发情周期卵泡期和黄体期的高产中国梅山猪输卵管伞部、壶腹部、峡部及子宫-输卵管连接处上皮细胞的管腔表面进行了检查。在伞部和壶腹部细胞表面观察到明显的周期性变化，但在峡部和子宫-输卵管连接处变化不大。卵泡期伞部上皮细胞密布纤毛，纤毛部分遮盖了分泌细胞的球状突起。黄体期，上皮中分泌细胞占主导，大部分纤毛细胞被分泌细胞的突起遮盖。壶腹部上皮也有类似变化，但程度较轻。在峡部和子宫-输卵管连接处，卵泡期分泌细胞的球状突起上有许多微绒毛，而黄体期它们变平，微绒毛数量减少且长度变短。黄体期，伞部和壶腹部分泌细胞表面有明显的单根纤毛突出。这些结果表明，中国梅山猪输卵管上皮细胞的周期性变化存在区域差异。
