Document Detail

Immunohistochemical and ultrastructural evidence of adrenal chromaffin cell subtypes in sea bass Dicentrarchus labrax (L.).
MedLine Citation:
PMID:  8860315     Owner:  NLM     Status:  MEDLINE    
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.
L Abelli; V P Gallo; A Civinini; L Mastrolia
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  General and comparative endocrinology     Volume:  102     ISSN:  0016-6480     ISO Abbreviation:  Gen. Comp. Endocrinol.     Publication Date:  1996 Apr 
Date Detail:
Created Date:  1997-03-11     Completed Date:  1997-03-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370735     Medline TA:  Gen Comp Endocrinol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  113-22     Citation Subset:  IM    
Department of Environmental Sciences, Faculty of Sciences, Tuscia University, Viterbo, Italy.
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MeSH Terms
Bass / anatomy & histology,  metabolism*
Chromaffin Cells / chemistry*,  ultrastructure
Dihydroxyphenylalanine / metabolism
Dopamine / metabolism
Dopamine beta-Hydroxylase / analysis*
Epinephrine / metabolism
Kidney / chemistry*,  ultrastructure
Microscopy, Electron
Norepinephrine / metabolism
Tyrosine / metabolism
Tyrosine 3-Monooxygenase / analysis*
Reg. No./Substance:
51-41-2/Norepinephrine; 51-43-4/Epinephrine; 55520-40-6/Tyrosine; 63-84-3/Dihydroxyphenylalanine; EC 3-Monooxygenase; EC beta-Hydroxylase

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