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      HSP70 expression in Biomphalaria glabrata snails exposed to cadmium.

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          Abstract

          In this study, the effects of the heavy metal cadmium on the stress protein HSP70 are investigated in freshwater mollusks Biomphalaria glabrata. Adult snails were exposed for 96h to CdCl2 at concentrations ranging from 0.09 to 0.7mgL(-1) (LC50/96h=0.34 (0.30-0.37). Time and concentration-dependent increases in the expression of HSP70 were observed at sub-lethal levels in the immunoblotting assay. Further, an increased survival to a lethal heat shock was observed in animals pre-exposed to a nonlethal concentration of cadmium, evidencing the induction of acquired tolerance. The present study demonstrated the inducibility of B. glabrata HSP70 by cadmium, a relevant environmental contaminant, at non-lethal levels, providing evidences that the assessment of HSP70 in B. glabrata can be regarded as a suitable biomarker for ecotoxicological studies.

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          Author and article information

          Journal
          Ecotoxicol. Environ. Saf.
          Ecotoxicology and environmental safety
          Elsevier BV
          1090-2414
          0147-6513
          Jun 2017
          : 140
          Affiliations
          [1 ] Instituto Butantan, Laboratório de Parasitologia, Avenida Vital Brasil, 1500, Butantã, São Paulo, SP CEP 05503-900, Brazil; Instituto de Pesquisas Energéticas e Nucleares, Avenida Professor Lineu Prestes, 2242, Cidade Universitária, São Paulo, SP CEP 05508-000, Brazil. Electronic address: rcantinha@gmail.com.
          [2 ] Instituto de Pesquisas Energéticas e Nucleares, Avenida Professor Lineu Prestes, 2242, Cidade Universitária, São Paulo, SP CEP 05508-000, Brazil. Electronic address: sborrely@ipen.br.
          [3 ] Instituto Butantan, Laboratório de Parasitologia, Avenida Vital Brasil, 1500, Butantã, São Paulo, SP CEP 05503-900, Brazil. Electronic address: nancyoguiura@butantan.gov.br.
          [4 ] Departamento de Estatística, Instituto de Matemática e Estatística, Universidade de São Paulo, Rua do Matão, 1010, Cidade Universitária, São Paulo, SP CEP 05008-090, Brazil. Electronic address: cadebp@gmail.com.
          [5 ] Instituto Butantan, Laboratório de Parasitologia, Avenida Vital Brasil, 1500, Butantã, São Paulo, SP CEP 05503-900, Brazil. Electronic address: marcelarigolon@hotmail.com.
          [6 ] Instituto Butantan, Laboratório de Parasitologia, Avenida Vital Brasil, 1500, Butantã, São Paulo, SP CEP 05503-900, Brazil. Electronic address: eliana.nakano@butantan.gov.br.
          Article
          S0147-6513(17)30087-8
          10.1016/j.ecoenv.2017.02.026
          28231501
          4179ed17-4d31-4100-833b-b4f48b050063
          History

          Acquired resistance,Bioindicator,Biomarker,Mollusk,Protein induction

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