PMID: 6974517Jan 1, 1981Paper

Studies on fluorescent granular perithelium (F.G.P.) of rat cerebral cortex - especially referring to morphological changes in aging

Anatomischer Anzeiger
M MatoK Kawasaki

Abstract

In this paper, the granule laden cells localizing around fine vessels in cerebral cortex were investigated with fluorescent, light and electron microscopes using Wistar rats. These cells were designated as fluorescent granular perithelial cells (F.G.P.). The findings obtained in this study were summarized as follows; 1. The F.G.P. were one of essential components of cerebral vessels and separated clearly from nervous tissue by a basal lamina. They were often observed at bifurcating regions of fine vessels. 2. The F.G.P. seemed to differentiate morphologically around birth, and the specific granules to them began to emit yellow fluorescence at second week and attained to a definite level of fluorescence intensity at eighth week. Microfluorometrically, the peak of emission stood at 530 micrometer. Accompanying with a growth of animals, eosinophilia of granules became strong. Sudanophilic areas in the F.G.P. were limited to a periphery of granules. Anisogranularity was evident in old rats age second and third year. 3. Electronmicroscopically, the specific cytoplasmic organelles in the F.G.P. were round electron opaque bodies and vesico-tubular system or sac shaped smooth surfaced endoplasmic reticula. The electron opaque bodies ap...Continue Reading

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