PMID- 30870631 OWN - NLM STAT- MEDLINE DCOM- 20190605 LR - 20190605 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 225 DP - 2019 Jun TI - Biochemical and molecular biomarkers in integument biopsies of free-ranging coastal bottlenose dolphins from southern Brazil. PG - 139-149 LID - S0045-6535(19)30403-5 [pii] LID - 10.1016/j.chemosphere.2019.02.179 [doi] AB - Adverse effects of exposure to persistent organic pollutants (POPs) threaten the maintenance of odontocete populations. In southern Brazil, coastal bottlenose dolphins from the Laguna Estuarine System (LES) and Patos Lagoon Estuary (PLE) were sampled using remote biopsies during the winter and summer months. Levels of bioaccumulated POPs were measured in the blubber. The activities of glutathione S-transferase (GST), glutathione reductase (GR), glutathione peroxidase (GPx), and superoxide dismutase (SOD) were also quantified, as were the mRNA transcript levels of aryl hydrocarbon receptor (AhR), AhR nuclear translocator (ARNT), cytochrome P450 1A1-like (CYP1A1), metallothionein 2A (MT2A), GST-pi, GPx-4, GR, interleukin 1 alpha (IL-1alpha), and major histocompatibility complex II (MHCII) in the skin. In general, levels of POPs were similar among sites, sexes, ages and seasons. For most animals, total polychlorinated biphenyl (SigmaPCBs) levels were above the threshold level have physiological effects and pose risks to cetaceans. The best-fitting generalized linear models (GLMs) found significant associations between GR, IL-1alpha and GPx-4 transcript levels, SOD and GST activities, and total polybrominated diphenyl ether (SigmaPBDEs) and pesticide levels. GLMs and Kruskal-Wallis analyses also indicated that there were higher transcript levels for most genes and lower GST activity in the winter. These results reinforce the need to consider the influence of environmental traits on biomarker values in wildlife assessments. CI - Copyright (c) 2019 Elsevier Ltd. All rights reserved. FAU - Righetti, Barbara Pacheco Harrison AU - Righetti BPH AD - Laboratorio de Biomarcadores de Contaminacao Aquatica e Imunoquimica, Departamento de Bioquimica, Universidade Federal de Santa Catarina, Florianopolis, Brazil. FAU - Mattos, Jaco Joaquim AU - Mattos JJ AD - Laboratorio de Biomarcadores de Contaminacao Aquatica e Imunoquimica, Departamento de Bioquimica, Universidade Federal de Santa Catarina, Florianopolis, Brazil. FAU - Siebert, Marilia Nardelli AU - Siebert MN AD - Laboratorio de Biomarcadores de Contaminacao Aquatica e Imunoquimica, Departamento de Bioquimica, Universidade Federal de Santa Catarina, Florianopolis, Brazil. FAU - Daura-Jorge, Fabio Goncalves AU - Daura-Jorge FG AD - Laboratorio de Mamiferos Aquaticos, Departamento de Ecologia e Zoologia, Universidade Federal de Santa Catarina, Florianopolis, Brazil. FAU - Bezamat, Carolina AU - Bezamat C AD - Laboratorio de Mamiferos Aquaticos, Departamento de Ecologia e Zoologia, Universidade Federal de Santa Catarina, Florianopolis, Brazil. FAU - Fruet, Pedro Friedrich AU - Fruet PF AD - Museu Oceanografico, Universidade Federal de Rio Grande, Rio Grande, Brazil; Kaosa, Rio Grade, Brazil; Centro Nacional de Pesquisa e Conservacao de Mamiferos Aquaticos - ICMBio/CMA, Santos, SP, Brazil. FAU - Genoves, Rodrigo Cezar AU - Genoves RC AD - Museu Oceanografico, Universidade Federal de Rio Grande, Rio Grande, Brazil; Kaosa, Rio Grade, Brazil. FAU - Taniguchi, Satie AU - Taniguchi S AD - Laboratorio de Quimica Organica, Universidade de Sao Paulo, Sao Paulo, Brazil. FAU - da Silva, Josilene AU - da Silva J AD - Laboratorio de Quimica Organica, Universidade de Sao Paulo, Sao Paulo, Brazil. FAU - Montone, Rosalinda Carmela AU - Montone RC AD - Laboratorio de Quimica Organica, Universidade de Sao Paulo, Sao Paulo, Brazil. FAU - Simoes-Lopes, Paulo Cesar de Azevedo AU - Simoes-Lopes PCA AD - Laboratorio de Mamiferos Aquaticos, Departamento de Ecologia e Zoologia, Universidade Federal de Santa Catarina, Florianopolis, Brazil. FAU - Bainy, Afonso Celso Dias AU - Bainy ACD AD - Laboratorio de Biomarcadores de Contaminacao Aquatica e Imunoquimica, Departamento de Bioquimica, Universidade Federal de Santa Catarina, Florianopolis, Brazil. FAU - Luchmann, Karim Hahn AU - Luchmann KH AD - Departamento de Educacao Cientifica e Tecnologica, Universidade do Estado de Santa Catarina, Florianopolis, Brazil. Electronic address: karim.luchmann@udesc.br. LA - eng PT - Journal Article DEP - 20190302 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Biomarkers) RN - 0 (RNA, Messenger) RN - 0 (Water Pollutants, Chemical) SB - IM MH - Adipose Tissue/drug effects/metabolism MH - Animals MH - Biomarkers/metabolism MH - Biopsy MH - Bottle-Nosed Dolphin/*genetics/*metabolism MH - Brazil MH - Environmental Monitoring/*methods MH - Gene Expression Regulation, Enzymologic/drug effects MH - RNA, Messenger/genetics/metabolism MH - Water Pollutants, Chemical/toxicity OTO - NOTNLM OT - Biomarker response OT - Bottlenose dolphins OT - Organic contaminants EDAT- 2019/03/15 06:00 MHDA- 2019/06/06 06:00 CRDT- 2019/03/15 06:00 PHST- 2018/11/13 00:00 [received] PHST- 2019/02/24 00:00 [revised] PHST- 2019/02/25 00:00 [accepted] PHST- 2019/03/15 06:00 [pubmed] PHST- 2019/06/06 06:00 [medline] PHST- 2019/03/15 06:00 [entrez] AID - S0045-6535(19)30403-5 [pii] AID - 10.1016/j.chemosphere.2019.02.179 [doi] PST - ppublish SO - Chemosphere. 2019 Jun;225:139-149. doi: 10.1016/j.chemosphere.2019.02.179. Epub 2019 Mar 2.