Distribution of glycogen phosphorylase and cytochrome oxidase in the central nervous system of the turtle Trachemys dorbigni

Citation
Wa. Partata et al., Distribution of glycogen phosphorylase and cytochrome oxidase in the central nervous system of the turtle Trachemys dorbigni, COMP BIOC A, 124(2), 1999, pp. 113-122
Citations number
25
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Animal Sciences",Physiology
Journal title
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR AND INTEGRATIVE PHYSIOLOGY
ISSN journal
1095-6433 → ACNP
Volume
124
Issue
2
Year of publication
1999
Pages
113 - 122
Database
ISI
SICI code
1095-6433(199910)124:2<113:DOGPAC>2.0.ZU;2-5
Abstract
Glycogen phosphorylase (GP) and cytochrome oxidase (CO) activities were map ped histochemically in the brain of the turtle Trachemys dorbigni. In the t elencephalon, both activities occurred in the olfactory bulb, in all cortic al areas, in the dorsal ventricular ridge, striatum, primordium hippocampi and olfactory tubercle. In the diencephalon, they were identified in some a reas of the hypothalamus, and in rotundus and geniculate nuclei. Both react ions were detected in the oculomotor, trochlear, mesencephalic trigeminal n uclei, the nucleus of the posterior commissure, torus semicircularis, subst antia nigra and ruber and isthmic nuclei of the mesencephalon. In all layer s of the optic tectum GP activity was found, but CO only labelled the strat um griseum centrale. In the medulla oblonga both enzymes appear in the reti cular, raphe and vestibular nuclei, locus coeruleus and nuclei of cranial n erves. In the cerebellum, the granular and molecular layers, and the deep c erebellar nuclei were positive for both enzymes. The Purkinje cells were on ly reactive for CO. In the spinal cord, motor and commissural neurones exhi bited a positive reaction for the two enzymes. However, CO also occurred in the marginal nucleus and in the lateral funiculus. These results may be us eful as a basis for subsequent studies on turtle brain metabolism. (C) 1999 Elsevier Science Inc. All rights reserved.