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Abstract:

The swamp eel, Synbranchus marmoratus, is a freshwater protogynic diandric species. Primary males develop directly as males while secondary males arise from the sex reversal of females. Fishes from Argentine and Brazil inland waters were collected, examined and compared for this study. In order to characterize the interstitial testicular compartment, light and electron microscopy techniques and an enzyme histochemical examination for steroidogenic cells detection were used. The interstitial compartment of S. marmoratus is composed of Leydig and myoid cells, collagen fibers, blood cells, macrophages,and amyelinic nerves. At the ultrastructural level, no differences were observed in the interstitial tissue, either between specimens from the different sampling sites or between primary and secondary males. Leydig cells are present in all testes examined throughout the year. A cytoplasmatic reaction of 3β-HSD was detected only in Leydig cells during sex reversal and in both type of males, mainly during the regressed and early maturation classes (autumn and winter). Leydig cells possess the typical fine structural characteristics associated with steroidogenesis. Furthermore, in both type of males, during sex reversal and after the spawning period, the number of granulocytes and macrophages present in the testes increased, suggesting that they could be involved in phagocytosis and resorption of damaged cells. © 2004 Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:Testicular interstitial cells, and steroidogenic detection in the protogynous fish, Synbranchus marmoratus (Teleostei, Synbranchidae)
Autor:Lo Nostro, F.L.; Antoneli, F.N.; Quagio-Grassiotto, I.; Guerrero, G.A.
Filiación:Laboratorio de Embriologia Animal, Depto. de Biodiversidad y Biol. Exp., Fac. de Ciencias Exactas y Naturales, Buenos Aires C1428EHA, Argentina
Departamento de Biologia Celular, Instituto de Biologia, UNICAMP, Campinas 13083-970, Brazil
Departamento de Morfologia, Instituto de Biociências, UNESP, Botucatu 18618-000, Brazil
Palabras clave:Blood cells; Interstitial compartment; Leydig cells; Protogynous; Sex reversal; Synbranchiformes; collagen fiber; animal cell; animal tissue; Argentina; article; autumn; blood cell; Brazil; cell compartmentalization; cell damage; cell structure; controlled study; cytoplasm; electron microscopy; enzyme histochemistry; fish; granulocyte; interstitium; Leydig cell; light; macrophage; male; maturation; nonhuman; phagocytosis; sex transformation; spawning; steroidogenesis; swamp; testis cell; tissue section; winter; Anguilliformes; Argentina (fish); Monopterus albus; Myoida; Myoidea; Pisces; Synbranchidae; Synbranchiformes; Synbranchus marmoratus; Teleostei
Año:2004
Volumen:36
Número:4
Página de inicio:221
Página de fin:231
DOI: http://dx.doi.org/10.1016/j.tice.2004.03.001
Título revista:Tissue and Cell
Título revista abreviado:Tissue Cell
ISSN:00408166
CODEN:TICEB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00408166_v36_n4_p221_LoNostro

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Citas:

---------- APA ----------
Lo Nostro, F.L., Antoneli, F.N., Quagio-Grassiotto, I. & Guerrero, G.A. (2004) . Testicular interstitial cells, and steroidogenic detection in the protogynous fish, Synbranchus marmoratus (Teleostei, Synbranchidae). Tissue and Cell, 36(4), 221-231.
http://dx.doi.org/10.1016/j.tice.2004.03.001
---------- CHICAGO ----------
Lo Nostro, F.L., Antoneli, F.N., Quagio-Grassiotto, I., Guerrero, G.A. "Testicular interstitial cells, and steroidogenic detection in the protogynous fish, Synbranchus marmoratus (Teleostei, Synbranchidae)" . Tissue and Cell 36, no. 4 (2004) : 221-231.
http://dx.doi.org/10.1016/j.tice.2004.03.001
---------- MLA ----------
Lo Nostro, F.L., Antoneli, F.N., Quagio-Grassiotto, I., Guerrero, G.A. "Testicular interstitial cells, and steroidogenic detection in the protogynous fish, Synbranchus marmoratus (Teleostei, Synbranchidae)" . Tissue and Cell, vol. 36, no. 4, 2004, pp. 221-231.
http://dx.doi.org/10.1016/j.tice.2004.03.001
---------- VANCOUVER ----------
Lo Nostro, F.L., Antoneli, F.N., Quagio-Grassiotto, I., Guerrero, G.A. Testicular interstitial cells, and steroidogenic detection in the protogynous fish, Synbranchus marmoratus (Teleostei, Synbranchidae). Tissue Cell. 2004;36(4):221-231.
http://dx.doi.org/10.1016/j.tice.2004.03.001