Water temperature and acid pH influence the cytotoxic and genotoxic effects of aluminum in the freshwater teleost Astyanax altiparanae (Teleostei: Characidae)

Autor(es)

Silva Pinheiro, Joao Paulo ^[1] ; de Assis, Cecilia Bertacini ^[1] ; Munoz-Penuela, Marcela ^[1] ; Barbosa Junior, Fernando ^[2] ; Correia, Tiago Gabriel ^[3] ; Moreira, Renata Guimaraes ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Biosci, Dept Physiol, Lab Metab & Reprod Aquat Organisms LAMEROA, Matao St, 14 Lane, 101 Room 220, Sao Paulo, SP - Brazil

^[2] Univ Sao Paulo, Fac Pharmaceut Sci Ribeirao Preto FCFRP, Cafe Ave, Ribeirao Preto, SP - Brazil

^[3] Univ Fed Amapa, Biol Sci Course, Juscelino Kubitschek Highway, Macapa, AP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Chemosphere; v. 220, p. 266-274, APR 2019.
• Citações Web of Science: 1

Resumo

The toxicity of metals, including aluminum (Al), can be potentiated by temperature and acid pH, a concern in view of the current global warming scenario. The aim of this study was to evaluate the bioconcentration of Al in the testes and semen of Astyanax altiparanae and the potential of this metal, at different environmental temperatures and acid pH, to cause cytotoxicity and genotocixity in erythrocytes and spermatozoa. A. altiparanae males were divided into nine experimental groups: at each of three different water temperatures (20, 25 and 30 degrees C), the fish were exposed to a neutral pH, an acid pH and acidic water containing Al (0.5 mg.L-1). The fish were subjected to subacute, semi-static exposure and sampled at 24 and 96 h. After each exposure period the comet assay (blood and semen) and micronucleus test (blood) were performed. Bioconcentration of Al was evaluated in the testes and semen. Exposure time and temperature influenced the Al bioconcentration pattern in the testes. Al concentration in the semen was higher in fish exposed at 20 and 25 degrees C (24 h). The DNA fragmentation score for the semen and blood was higher in fish exposed to Al at 20 (24 h) and 30 degrees C (96 h). The frequency of nuclear abnormalities in erythrocytes was higher in the group exposed to Al at 30 degrees C (96 h). It was concluded that Al bioconcentrates in the testes and semen of A. altiparanae at different temperatures and is potentially cytotoxic and genotoxic to erythrocytes and spermatozoa in this species. (C) 2018 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 14/16320-7 - Impactos das mudanças climáticas e ambientais sobre a fauna: uma abordagem integrativa
• Beneficiário: Carlos Arturo Navas Iannini
• Modalidade de apoio: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático
• Processo FAPESP: 16/08770-8 - Avaliação da qualidade seminal, mutagênese e genotoxicidade em Astyanax altiparanae (Teleostei, Characidae) expostos ao alumínio em diferentes temperaturas de água
• Beneficiário: João Paulo Silva Pinheiro
• Modalidade de apoio: Bolsas no Brasil - Doutorado