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Endothelial cells of the meningeal capillaries in the rainbow trout: A freeze-fracture study

✍ Scribed by Hector J. Caruncho; Dr. Ramón Anadón

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
687 KB
Volume
206
Category
Article
ISSN
0362-2525

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✦ Synopsis

Abstract

Meningeal capillaries are unfenestrated. They are made up of endothelial cells that have a pinocytotic caveolae density of 41 ± 11/μm^2^ and 89 ± 21/μm^2^ on the abluminal and luminal sides respectively. The total density of intramembrane particles is not significantly different between the luminal and the abluminal membranes; however, the coefficients of partition are significantly different (P< 0.001). One or two strands of tight junctions occur between adjacent cells but no gap junctions nor desmosomes exist. The density of nuclear pores is less than 3.2/μm^2^. An abundance of intermediate filaments and free vesicles, some of which are seriated, characterize the cytoplasm. The functional significance of these findings is discussed.

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