Comparison of perivascular astrocytic structure between white matter and gray matter of rats

Regional differences in perivascular glial structures were investigated between the white matter (hippocampal fimbria, corpus callosum, cerebellar medulla) and the gray matter (cerebral cortex) of adult rats. Sparser vascular distribution, perivascular glial rows and cylinder-like segmented astrocyt...

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Bibliographic Details
Published in:Brain research 2003-12, Vol.992 (2), p.294-297
Main Authors: Suzuki, Mitsuru, Obara, Keiko, Sasaki, Yuka, Matoh, Koichi, Kitabatake, Akihiro, Sasaki, Katsuya, Nunosawa, Fumiaki
Format: Article
Language:English
Subjects:
Anatomy
Animals
Astrocyte
Astrocytes - physiology
Astrocytes - ultrastructure
Biological and medical sciences
Blood-Brain Barrier - physiology
Brain - physiology
Brain - ultrastructure
Central nervous system
Cerebellar medulla
Cerebellum - blood supply
Cerebellum - cytology
Cerebellum - ultrastructure
Cerebral Cortex - blood supply
Cerebral Cortex - cytology
Cerebral Cortex - ultrastructure
Cerebral white matter
Corpus callosum
Corpus Callosum - blood supply
Corpus Callosum - cytology
Corpus Callosum - ultrastructure
Dementia, Vascular - pathology
Dementia, Vascular - physiopathology
Female
fimbria
Fundamental and applied biological sciences. Psychology
Hippocampus - blood supply
Hippocampus - cytology
Hippocampus - ultrastructure
Microcirculation - physiology
Microcirculation - ultrastructure
Microscopy, Electron
Nerve Fibers, Myelinated - physiology
Nerve Fibers, Myelinated - ultrastructure
Perivascular structure
Rats
Rats, Inbred F344
Vertebrates: nervous system and sense organs
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Summary:Regional differences in perivascular glial structures were investigated between the white matter (hippocampal fimbria, corpus callosum, cerebellar medulla) and the gray matter (cerebral cortex) of adult rats. Sparser vascular distribution, perivascular glial rows and cylinder-like segmented astrocytic endings were characteristic in the white matter. The perivascular astrocytic processes covered microvessels extensively in the white matter. Comparison of transverse microvessel sections by transmission electron microscopy (TEM) between the two sites revealed significantly larger perivascular astrocytic spaces in the white matter.
ISSN:0006-8993
1872-6240
DOI:10.1016/j.brainres.2003.08.052