Sbarbati A, Zancanaro C, Cinti S, Osculati F
Institute of Human Anatomy and Histology, University of Verona, Italy.
Acta Anat (Basel). 1988;131(1):47-51. doi: 10.1159/000146484.
We examined non-granulated pituitary cells (folliculo-stellate cells and anterior and posterior marginal cells of the pituitary cleft) in lactating and virgin female rats by means of electron microscopy and morphometry. Ultrastructure and morphometric parameters of the cells lining the pituitary cleft were similar in the two groups of animals. On the contrary, folliculo-stellate cells showed a marked nucleocytoplasmic activation in lactating rats in the electron microscope, which was confirmed by morphometric measurements. These results are not consistent with the hypothesis that the three cell types share the same reactivity during pituitary hyperfunction and that they have a common function, as suggested by purely morphological studies in various endocrine conditions. We believe that quantitation of cell response during such stimuli could be useful to further elucidate this matter.
我们通过电子显微镜和形态测量法研究了哺乳期和未生育雌性大鼠的无颗粒垂体细胞（滤泡星状细胞以及垂体裂的前后边缘细胞）。两组动物中垂体裂内衬细胞的超微结构和形态测量参数相似。相反，在电子显微镜下，滤泡星状细胞在哺乳期大鼠中表现出明显的核质激活，这一点通过形态测量得以证实。这些结果与如下假设不一致：在垂体功能亢进期间，这三种细胞类型具有相同的反应性且具有共同功能，这是各种内分泌状况下单纯形态学研究所表明的。我们认为，在此类刺激期间对细胞反应进行定量可能有助于进一步阐明这一问题。
