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Abstract:

Evaluations of histopathological lesions in gill tissue were carried out in the freshwater fish Macropsobrycon uruguayanae following 30 and 60 days of exposure to 1.5 mg l-1 of cadmium. The study was conducted on both fed and starved animals in order to determine the influence of feeding condition on cadmium toxicity. The main lesions observed and quantified were: (1) hyperplasia of primary lamellar epithelium; (2) hyperplasia of secondary lamellar epithelium; (3) separation of respiratory epithelium; (4) shortening of secondary lamellae; (5) epithelial necrosis; (6) fusion of adjacent secondary lamellae; (7) hypertrophy of respiratory epithelium; (8) lamellar telangiectasis; (9) hyperplasia of chloride cells; (10) mucinous metaplasia; and (11) inflammatory infiltration. Lesions 6, 8, 9 and 11 were only induced by exposure to cadmium, while lesion 4 could be produced only by starvation. Starved fish also showed a reduction in total body weight and length. Lesion 2 was shown to be non-specific, and produced by either cadmium, starvation or even exposure time. The possible mode of action of the experimental factors are discussed in relation to the observed pathologies.

Registro:

Documento: Artículo
Título:Histopathological effects of cadmium on the gills of the freshwater fish, Macropsobrycon uruguayanae Eigenmann (Pisces, Atherinidae)
Autor:Randi, A.S.; Monserrat, J.M.; Rodriguez, E.M.; Romano, L.A.
Filiación:Department of Biological Chemistry, University of Buenos Aires, Buenos Aires, Argentina
Department of Biological Sciences, University of Buenos Aires, Ineva, Contcet, Buenos Aires, Argentina
Department of Biopathology, Albert Einstein Med. Res. Foundation, Buenos Aires, Argentina
Department of Biological Chemistry, University of Buenos Aires, Ciudad Universitaria (Pab. II), 1428 Buenos Aires, Argentina
Palabras clave:Animalia; Atherinidae; Macropsobrycon; Macropsobrycon uruguayanae; Macropsobrycon uruguayanae; Pisces
Año:1996
Volumen:19
Número:4
Página de inicio:311
Página de fin:322
DOI: http://dx.doi.org/10.1111/j.1365-2761.1996.tb00709.x
Título revista:Journal of Fish Diseases
Título revista abreviado:J. FISH DIS.
ISSN:01407775
CODEN:JFIDD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01407775_v19_n4_p311_Randi

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Citas:

---------- APA ----------
Randi, A.S., Monserrat, J.M., Rodriguez, E.M. & Romano, L.A. (1996) . Histopathological effects of cadmium on the gills of the freshwater fish, Macropsobrycon uruguayanae Eigenmann (Pisces, Atherinidae). Journal of Fish Diseases, 19(4), 311-322.
http://dx.doi.org/10.1111/j.1365-2761.1996.tb00709.x
---------- CHICAGO ----------
Randi, A.S., Monserrat, J.M., Rodriguez, E.M., Romano, L.A. "Histopathological effects of cadmium on the gills of the freshwater fish, Macropsobrycon uruguayanae Eigenmann (Pisces, Atherinidae)" . Journal of Fish Diseases 19, no. 4 (1996) : 311-322.
http://dx.doi.org/10.1111/j.1365-2761.1996.tb00709.x
---------- MLA ----------
Randi, A.S., Monserrat, J.M., Rodriguez, E.M., Romano, L.A. "Histopathological effects of cadmium on the gills of the freshwater fish, Macropsobrycon uruguayanae Eigenmann (Pisces, Atherinidae)" . Journal of Fish Diseases, vol. 19, no. 4, 1996, pp. 311-322.
http://dx.doi.org/10.1111/j.1365-2761.1996.tb00709.x
---------- VANCOUVER ----------
Randi, A.S., Monserrat, J.M., Rodriguez, E.M., Romano, L.A. Histopathological effects of cadmium on the gills of the freshwater fish, Macropsobrycon uruguayanae Eigenmann (Pisces, Atherinidae). J. FISH DIS. 1996;19(4):311-322.
http://dx.doi.org/10.1111/j.1365-2761.1996.tb00709.x