Zinc and copper distribution in excretory organs of the dogfish Scyliorhinus canicula and chloride cell response following treatment with zinc sulphate

Crespo, S.; Soriano, E; Sampera, C.; Balasch, Juan

doi:10.1007/bf00397075

Cited by 32 publications

(14 citation statements)

References 27 publications

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“…Their disappearance from the skin at the end of the experimental period may reflect that the ionic regulation has been restored, for instance by adaptive processes in the gill e.g., an increase in chloride cell number in the branchial epithelium. Such an increase has been reported for the winter flounder and the dogfish after copper expo sure (Baker, 1969;Crespo et al, 1981). The appearance of chloride cells in the skin of carp can be initiated by administration of ACTH, likely via cortisol (Iger, 1992).…”

Section: Filament Cellsmentioning

confidence: 71%

Cellular responses in the skin of carp (Cyprinus carpio) exposed to copper

et al. 1994

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The skin o f carp, Cyprinus carpio, was exam ined at the ultrastructural level after exposure to 1.6 juM (100 fi% I"1) of copper for different periods, up to 43 days. D uring the first 7 days, the skin surface became highly undulating and covered by a web o f glycocalyx and am orphous mucus. At this period, degenerative pavem ent cells (both apoptotic and necrotic) were com m on. D uring the whole period filament cells from the outer epiderm al layers were active in synthesizing secretory vesicles o f high electron density. M itotic activity was enhanced, and was located m ainly in the vicinity o f club cells. M ucous cells differentiated close to the skin surface, became elongated and synthesized highly electron-dense, probably serous, m ucosom es. The latter showed peroxidase activity. M any leucocytes invaded the skin, and chloride cells ap peared close to the epiderm al surface. M erkel cells were depleted o f their secretory vesicles during the first week of copper exposure, but recovered afterw ards. In the dermis, fibroblasts became m ore active in the synthesis and secretion o f collagen. The pigm ent in the melanocytes was dispersed in the first weeks, but this reversed tow ards the end o f the experiment. These changes reflect the sensitivity o f the skin o f fish to w aterborne copper. They are com parable to the effects o f stressors such as cadm ium , lead, or acid water.

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Section: Filament Cellsmentioning

confidence: 71%

Cellular responses in the skin of carp (Cyprinus carpio) exposed to copper

et al. 1994

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“…Oladimeji and Offem (1989) reported that in O. niloticus, the gills consistently accumulated higher amount of lead as lead nitrate. Crepso et al (1981) found Zn to be highly accumulated in dog-fish gills. Okoye (1991) reported the level of accumulated Pb to be 2.28 µg/g fresh weights.…”

Section: Discussionmentioning

confidence: 99%

Effects of sub-lethal exposure of lead acetate on histopathology of gills, liver, kidney and muscle and its accumulation in these organs of Clarias gariepinus

Al-Balawi

Al-Akel

Al‐Misned

et al. 2013

Braz. arch. biol. technol.

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The aim of this work was to study the effects of sub-lethal exposure of lead acetate on the histopathology of the gills, liver, kidney and muscle and its accumulation in these organs of Clarias gariepinus. Results showed that lead accumulation in the tissues of C. gariepinus was dependent on the exposure period and lead concentration. Gills and liver were the predominant storage tissue and the order of accumulation in tissues was gill > liver > kidney > muscle. Some structural changes were observed in different organs, especially in the gills of the fishes exposed to lead acetate. Epithelial hypertrophy and epithelial lifting were apparent in the gills of exposed fishes. The degeneration of cytoplasm and secondary lamellae was also observed. Necrosis of hepatocytes was apparent. Glomerular expansion and gaps between the muscular bundles were found in the fishes exposed to lead acetate.

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“…Infiltration with lymphocytes and macrophages frequently occurs together with infestations of unicellular parasites. Intoxication with Cd, Cu, and Zn ions is reflected in the histopathologic picture as an increase in the number of chloride cells (Crespo et al 1981). These cells then migrate from the epithelium of respiratory filaments and accumulate on the surface of respiratory lamellae.…”

Section: Exudate and Cellular Infiltrationmentioning

confidence: 99%

Morphologic evaluation of the gills as a tool in the diagnostics of pathological conditions in fish and pollution in the aquatic environment: a review

Strzyźewska¹,

Szarek²,

Babińska³

2016

Vet. Med. - Czech

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Fish gills, owing to their status as a multifunctional organ, have always fascinated researchers. In spite of the intense work done on the morphologic examination of gills, the organ is relatively under-used in health evaluation in fish. The existing literature on this topic is reviewed here. Our review summarises important diagnostic guidelines for the examination of gill structure and describes the morphological lesions that develop under the influence of different biological and physicochemical factors. The picture that should emerge is that of an organ that is extremely sensitive to all types of handling and unfavourable changes in the external and internal environments. We conclude that studying the morphology of the fish gills provides an opportunity to assess fish health status as well as information on possible health hazards coming from their environment.

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Zinc and copper distribution in excretory organs of the dogfish Scyliorhinus canicula and chloride cell response following treatment with zinc sulphate

Cited by 32 publications

References 27 publications

Cellular responses in the skin of carp (Cyprinus carpio) exposed to copper

Cellular responses in the skin of carp (Cyprinus carpio) exposed to copper

Effects of sub-lethal exposure of lead acetate on histopathology of gills, liver, kidney and muscle and its accumulation in these organs of Clarias gariepinus

Morphologic evaluation of the gills as a tool in the diagnostics of pathological conditions in fish and pollution in the aquatic environment: a review

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