| Immunohistochemical and ultrastructural evidence of adrenal chromaffin cell subtypes in sea bass Dicentrarchus labrax (L.). | |
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MedLine Citation:
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PMID: 8860315 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Histology demonstrated chromaffin cells in the head kidney and opisthonephros of the sea bass. Immunohistochemistry showed the catecholamine-synthesizing enzymes tyrosine hydroxylase and dopamine beta-hydroxylase in these cells. Phenlethanolamine N-methyltransferase was detected in a fraction of the chromaffin cells in the head kidney (59%) and in the opisthonephros (54%). Distinct noradrenaline- and adrenaline-synthesizing cells are therefore suggested. Ultrastructural analysis confirmed the existence of two main chromaffin cell types, distinguished by different types of the secretory granules. Cells that contain vesicles with a round, electron-dense core were interpreted as noradrenaline cells, while cells with electron-lucent vesicles were identified as adrenaline cells. The ultrastructure of these chromaffin cell subtypes does not differ in the head kidney and opisthonephros. A minor population of chromaffin cells was identified, which typically show smaller vesicles with an electron-dense core. This population may account for a limited number of not fully differentiated chromaffin cells. |
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Authors:
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L Abelli; V P Gallo; A Civinini; L Mastrolia |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: General and comparative endocrinology Volume: 102 ISSN: 0016-6480 ISO Abbreviation: Gen. Comp. Endocrinol. Publication Date: 1996 Apr |
Date Detail:
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Created Date: 1997-03-11 Completed Date: 1997-03-11 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0370735 Medline TA: Gen Comp Endocrinol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 113-22 Citation Subset: IM |
Affiliation:
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Department of Environmental Sciences, Faculty of Sciences, Tuscia University, Viterbo, Italy. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Bass / anatomy & histology, metabolism* Catalysis Chromaffin Cells / chemistry*, ultrastructure Dihydroxyphenylalanine / metabolism Dopamine / metabolism Dopamine beta-Hydroxylase / analysis* Epinephrine / metabolism Immunohistochemistry Kidney / chemistry*, ultrastructure Microscopy, Electron Norepinephrine / metabolism Tyrosine / metabolism Tyrosine 3-Monooxygenase / analysis* |
| Chemical | |
Reg. No./Substance:
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51-41-2/Norepinephrine; 51-43-4/Epinephrine; 55520-40-6/Tyrosine; 63-84-3/Dihydroxyphenylalanine; EC 1.14.16.2/Tyrosine 3-Monooxygenase; EC 1.14.17.1/Dopamine beta-Hydroxylase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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