NADPH-diaphorase histochemistry reveals oligodendrocytes in the rainbow trout (teleosts).

Document Type

Article

Abstract

We studied the distribution of NADPH-diaphorase (NADPHd) in the brain of the rainbow trout. Not only neurons but also tanycytes and oligodendrocytes showed NADPHd positivity. Interestingly, staining of oligodendrocytes was delicate and revealed fine characteristics of these cells, comparable to those revealed by classical 'oligodendrocyte methods' in mammals (such as the rich branching of processes and their association with myelin sheaths). NADPHd histochemistry indicated that trout oligodendrocytes are heterogeneous as regards cell size, shape and number of processes, and that there is a positive correlation between the size of axons and that of the associated oligodendrocytes. NADPHd histochemistry thus appears to be a useful method for the study of oligodendrocyte populations in bony fishes. Furthermore, this is the first report of NADPHd activity in oligodendrocytes of any vertebrate.

Keywords

Animals, Brain Chemistry, Cell Size, Histocytochemistry, Microscopy, Electron, NADPH Dehydrogenase, Neurons, Oligodendroglia, Oncorhynchus mykiss

Medical Subject Headings

Animals; Brain Chemistry; Cell Size; Histocytochemistry; Microscopy, Electron; NADPH Dehydrogenase; Neurons; Oligodendroglia; Oncorhynchus mykiss

Publication Date

2-23-1996

Publication Title

Neuroscience letters

ISSN

0304-3940

Volume

205

Issue

2

First Page

83

Last Page

86

PubMed ID

8907322

Digital Object Identifier (DOI)

10.1016/0304-3940(96)12379-x

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