Document Detail


Venous microvasculature of the pineal body and choroid plexus in the rat.
MedLine Citation:
PMID:  1865156     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Rats were perfused from aorta with Ringer's solution and with Karnovsky's fixative, and injected from the right atrium with Mercox resin. Specimens were properly taken, observed under LM, TEM, SEM, and stereo-photographed. Fenestrated endothelial cells of the pineal capillary were observed to contain plenty of microtubules running parallel to the long axis of the vessel. The endothelial basal lamina appeared anchored by microfibrils onto fine collagen fibrils and onto the basal lamina of the perivascular cells. These findings indicate resistance of the capillary endothelium against compression by perivascular hydrostatic pressure, and strongly suggest that the perivascular cerebrospinal fluid is absorbed into the capillary lumen. Resin cast of the pineal venous system looked like a glomerule with two longer collecting veins on the ventral surface and with shorter ones on the dorsal side all emptying into the straight sinus and the confluence of sinuses. Resin cast of the choroid plexus venous system tended to lobulate and looked like a vine with a spiral collecting vein emptying into the great vein. Two veins were found connecting the great vein to the confluence and to the transverse sinuses. These could be effective collaterals in case of occlusion of Galen's vein.
Authors:
S Q Sun; P H Hashimoto
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of electron microscopy     Volume:  40     ISSN:  0022-0744     ISO Abbreviation:  J Electron Microsc (Tokyo)     Publication Date:  1991 Feb 
Date Detail:
Created Date:  1991-09-09     Completed Date:  1991-09-09     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  7611157     Medline TA:  J Electron Microsc (Tokyo)     Country:  JAPAN    
Other Details:
Languages:  eng     Pagination:  29-33     Citation Subset:  IM    
Affiliation:
Department of Anatomy, Osaka University Medical School, Japan.
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MeSH Terms
Descriptor/Qualifier:
Animals
Cerebral Veins / ultrastructure
Choroid Plexus / blood supply*
Female
Male
Microcirculation / ultrastructure
Microscopy, Electron
Microscopy, Electron, Scanning
Pineal Gland / blood supply*
Rats

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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