Immunocytochemical localization of l -glutamate decarboxylase and catecholamine-synthesizing enzymes in the retroperitoneal sympathetic tissue of the newborn rat
Journal of the Autonomic Nervous System, ISSN: 0165-1838, Vol: 26, Issue: 2, Page: 89-96
1989
- 10Citations
- 3Captures
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Metrics Details
- Citations10
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- CrossRef10
- Captures3
- Readers3
Article Description
The localization of l -glutamate decarboxylase (GAD), the enzyme synthesizing γ-aminobutyric acid, was studied in newborn rat retroperitoneal sympathetic tissue, i.e. the main retroperitoneal paraganglion, adrenal medullae and abdominal sympathetic ganglia using the indirect immunofluorescence method. The coexistence of GAD with the catecholamine-synthesizing enzymes tyrosine hydroxylase (TH) and phenylethanolamine N-methyltransferase (PNMT) was analyzed in consecutive sections or by staining one section consecutively with different antisera. GAD immunoreactivity was observed only in some cell types of each organ studied. In the main retroperitoneal paraganglion, the small, intensely TH-immunoreactive, paraganglion-type cells were GAD-immunoreactive, while the larger moderately TH-immunoreactive, neuron-like cells were non-reactive for GAD. In the adrenal medulla, GAD immunoreactivity was localized only in the adrenaline-synthesizing, PNMT-immunoreactive chromaffin cells. The noradrenaline-synthesizing, i.e. the TH-immunoreactive cells with no PNMT immunoreactivity, were non-reactive for GAD. In the abdominal sympathetic ganglia, some small intensely TH-immunoreactive cells were GAD-immunoreactive, while the principal neurons were non-reactive for GAD. These results provide immunohistochemical evidence that GAD is present and is colocalized with catecholamine-synthesizing enzymes in various sympathetic tissues of the newborn rat. The present results indicate that GAD is localized in adrenaline-synthesizing cells of all the sympathetic tissues studied. A fraction of noradrenaline-synthesizing cells of retroperitoneal sympathetic tissues, excluding the adrenal medulla, also contains GAD.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/0165183889901562; http://dx.doi.org/10.1016/0165-1838(89)90156-2; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0024510717&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/2566632; https://linkinghub.elsevier.com/retrieve/pii/0165183889901562; http://dx.doi.org/10.1016/0165-1838%2889%2990156-2; https://dx.doi.org/10.1016/0165-1838%2889%2990156-2
Elsevier BV
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