Yániz Jesús Luis, Recreo Pilar, Carretero Teresa, Arceiz Elena, Hunter R H F, López-Gatius Fernando
Department Producción Animal, Universidad de Zaragoza, Huesca, Spain.
Anat Rec (Hoboken). 2007 Jul;290(7):831-7. doi: 10.1002/ar.20554.
The aim of this study was to describe the surface features of the peritoneal mesothelium covering the genital tract and adjacent ligaments of the sow to find signs of biosynthetic activation of cells. Surface features of the serosa covering the genital tract and adjacent ligaments from 14 cyclic sows, 7 in the follicular phase and 7 in the luteal phase of the estrous cycle, were examined by histology and scanning electron microscopy. Five additional sows, three in the follicular phase and two in the luteal phase of the estrous cycle, were examined by transmission electron microscopy (TEM). In this study, the presence of cells of the oviductal epithelium in the serosa of the infundibulum and the ampulla, as well as indications of a high functional activity of the mesothelial cells in the areas studied were two aspects that differed from the findings of previous works. Presence of endosalpingeal cells was observed in the serosal surface, showing cyclical variations with a predominance of either ciliated cells during the follicular phase or secretory cells during the luteal phase. Signs of high functional activity of the mesothelial cells included the predominance of cuboidal over flattened cells, a cytoplasm richly supplied with organelles, a dense microvillous coat, numerous primary cilia, and many secretory structures on the surface of cells. These results indicate that the serosa covering the genital area and the adjacent ligaments in the sow has an active epithelium whose coordinating role between reproductive tissues may be far more significant than previously thought.
本研究的目的是描述覆盖母猪生殖道及相邻韧带的腹膜间皮的表面特征，以寻找细胞生物合成激活的迹象。通过组织学和扫描电子显微镜检查了14头处于发情周期的母猪（卵泡期7头，黄体期7头）生殖道及相邻韧带浆膜的表面特征。另外5头母猪（卵泡期3头，黄体期2头）通过透射电子显微镜（TEM）进行了检查。在本研究中，漏斗部和壶腹部浆膜中存在输卵管上皮细胞，以及在所研究区域间皮细胞具有高功能活性的迹象，是与以往研究结果不同的两个方面。在浆膜表面观察到输卵管内膜细胞的存在，呈现周期性变化，卵泡期以纤毛细胞为主，黄体期以分泌细胞为主。间皮细胞高功能活性的迹象包括立方形细胞多于扁平细胞、细胞质富含细胞器、密集的微绒毛膜、大量初级纤毛以及细胞表面许多分泌结构。这些结果表明，覆盖母猪生殖区域及相邻韧带的浆膜具有活跃的上皮，其在生殖组织之间的协调作用可能比以前认为的更为重要。
