| Registro completo |
| Provedor de dados: |
Biological Sciences
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| País: |
Brazil
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| Título: |
Morpho-toxicology of chlorpyrifos to prolactin cells of a freshwater catfish, Heteropneustes fossilis - doi: 10.4025/actascibiolsci.v34i4.9134
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| Autores: |
Srivastav, Ajai Kumar; DDU Gorakhpur University
Srivastava, Sanjay Kumar; DDU Gorakhpur University
Tripathi, Sarojni; DDU Gorakhpur University
Mishra, Diwakar
Srivastav, Sunil Kumar; DDU Gorakhpur University
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| Data: |
2012-09-04
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| Ano: |
2012
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| Palavras-chave: |
Prolactin cells
Serum calcium
Organophosphate
Chlorpyrifos
Fish
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| Resumo: |
In the present study, an organophosphorus compound Coroban (active ingredient chlorpyrifos – E.C. 20%) was used. In short-term exposure the fish were subjected to 0.8 of 96h LC50 value of chlorpyrifos (1.76 mg L-1) for 96h. In long-term exposure the experiment was performed for 28 days by using 0.2 of 96h LC50 value of chlorpyrifos (0.44 mg L-1). Fish were killed on each time intervals from control and experimental (chlorpyrifos) groups after 24, 48, 72, and 96h in short-term exposure and after 7, 14, 21, and 28 days in long-term experiment. Blood samples were collected and sera were analyzed for calcium. Pituitary glands were fixed for histological studies and stained with Herlant tetrachrome and Heidenhain’s azan techniques. Short-term exposure of chlorpyrifos caused decrease in the serum calcium levels. No change was noticed in the prolactin cells of chlorpyrifos treated fish. Long-term treatment with chlorpyrifos provoked hypocalcemia. The prolactin cells of treated fish exhibited slight degranulation after 21 days whereas the nuclear volume remained unchanged. After 28 days, the prolactin cells exhibited further degranulation and the nuclear volume recorded an increase. Cytolysis and vacuolization were also visible.
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| Idioma: |
Inglês
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| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/9134
10.4025/actascibiolsci.v34i4.9134
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| Editor: |
Universidade Estadual De Maringá
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| Relação: |
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/downloadSuppFile/9134/32171
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/downloadSuppFile/9134/32172
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/downloadSuppFile/9134/32178
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/downloadSuppFile/9134/32179
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/downloadSuppFile/9134/32180
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| Formato: |
application/pdf
application/pdf
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| Fonte: |
Acta Scientiarum. Biological Sciences; v. 34, n. 4 (2012); 443-449
Acta Scientiarum. Biological Sciences; v. 34, n. 4 (2012); 443-449
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| Direitos: |
DECLARATION OF ORIGINALITY AND CESSATION OF COPYRIGHTI Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal. I also declare that once published in the Acta Scientiarum. Biological Sciences, a publication of the Universidade Estadual de Maringá, it will not be submitted by me or by any co-author to any other scientific communication mean. In my name and in the name of co-authors, I shall cede the copyright of the above mentioned article to the Universidade Estadual de Maringá and I declare that I know that the non-observance of this norm may make me liable for the penalties contemplated in the Law for the Protection of Authors’ Rights (Act 9609 of the 19th February 1998).
DECLARAÇÃO DE ORIGINALIDADE E CESSÃO DE DIREITOS AUTORAIS Declaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade. Declaro, ainda, que uma vez publicado na revista Acta Scientiarum. Biological Sciences, editada pela Universidade Estadual de Maringá, o mesmo jamais será submetido por mim ou por qualquer um dos demais co-autores a qualquer outro meio de divulgação científica. Através deste instrumento, em meu nome e em nome dos demais co-autores, porventura existentes, cedo os direitos autorais do referido artigo à Universidade Estadual de Maringá e declaro estar ciente de que a não observância deste compromisso submeterá o infrator a sanções e penas previstas na Lei de Proteção de Direitos Autorias (Nº9609, de 19/02/98).
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