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BIBTEX RIS

Enteric nervous system analyses: New biomarkers for environmental quality assessment

2018; Elsevier BV; Volume: 137; Linguagem: Inglês

10.1016/j.marpolbul.2018.11.015

1879-3363

Gabriela Pustiglione Marinsek, Denis Moledo de Souza Abessa, Paloma Kachel Gusso‐Choueri, Rodrigo Brasil Choueri, Alexandre Rodrigo Nascimento Gonçalves, Beatriz Vivian D'angelo Barroso, Gustavo Souza Santos, Marta Margarete Cestari, Bruno Galvão de Campos, Renata de Britto Mari,

Environmental Toxicology and Ecotoxicology

The gastrointestinal tract (GIT) of fish is a target of contaminants since it can absorb these substances. We evaluated the morphophysiological alterations in the GIT of Sphoeroides testudineus collected in two estuaries presenting differences in their environmental quality (NIA and IA). The intestine was analyzed for histological and neuronal changes; liver and gills for biochemical markers; muscle tissues for neurotoxicity and peripheral blood for genotoxic damage. The results showed alterations in the GIT of the animals collected in the IA, such as muscle tunica and goblet cell density reduction, increased intraepithelial lymphocytes density and changes in neuronal density. Furthermore, changes were observed in MTs and LPO in the gills. Thus, we suggest that TGI is functioning as a barrier that responds to ingested contaminants, in order to reduce their absorption and translocation. Thus, alterations in morphophysiological and enteric neurons in S. testudineus can be used as biomarkers of environmental contamination.