PMID- 31146160 OWN - NLM STAT- MEDLINE DCOM- 20191030 LR - 20191030 IS - 1873-6750 (Electronic) IS - 0160-4120 (Linking) VI - 129 DP - 2019 Aug TI - Impacts of in vivo and in vitro exposures to tamoxifen: Comparative effects on human cells and marine organisms. PG - 256-272 LID - S0160-4120(18)33231-8 [pii] LID - 10.1016/j.envint.2019.05.014 [doi] AB - Tamoxifen (TAM) is a first generation-SERM administered for hormone receptor-positive (HER+) breast cancer in both pre- and post-menopausal patients and may undergo metabolic activation in organisms that share similar receptors and thus face comparable mechanisms of response. The present study aimed to assess whether environmental trace concentrations of TAM are bioavailable to the filter feeder M. galloprovincialis (100 ng L(-1)) and to the deposit feeder N. diversicolor (0.5, 10, 25 and 100 ng L(-1)) after 14 days of exposure. Behavioural impairment (burrowing kinetic), neurotoxicity (AChE activity), endocrine disruption by alkali-labile phosphate (ALP) content, oxidative stress (SOD, CAT, GPXs activities), biotransformation (GST activity), oxidative damage (LPO) and genotoxicity (DNA damage) were assessed. Moreover, this study also pertained to compare TAM cytotoxicity effects to mussels and targeted human (i.e. immortalized retinal pigment epithelium - RPE; and human transformed endothelial cells - HeLa) cell lines, in a range of concentrations from 0.5 ng L(-1) to 50 mug L(-1). In polychaetes N. diversicolor, TAM exerted remarkable oxidative stress and damage at the lowest concentration (0.5 ng L(-1)), whereas significant genotoxicity was reported at the highest exposure level (100 ng L(-1)). In mussels M. galloprovincialis, 100 ng L(-1) TAM caused endocrine disruption in males, neurotoxicity, and an induction in GST activity and LPO byproducts in gills, corroborating in genotoxicity over the exposure days. Although cytotoxicity assays conducted with mussel haemocytes following in vivo exposure was not effective, in vitro exposure showed to be a feasible alternative, with comparable sensitivity to human cell line (HeLa). CI - Copyright (c) 2019 The Authors. Published by Elsevier Ltd.. All rights reserved. FAU - Fonseca, T G AU - Fonseca TG AD - CIMA, Centro de Investigacao Marinha e Ambiental, Universidade do Algarve, Campus Gambelas, 8005-135 Faro, Portugal; NEPEA, Nucleo de Estudos em Poluicao e Ecotoxicologia, Aquatica, Universidade Estadual Paulista (UNESP), Campus do Litoral Paulista, Sao Vicente, SP 11330-900, Brazil. FAU - Carrico, T AU - Carrico T AD - CIMA, Centro de Investigacao Marinha e Ambiental, Universidade do Algarve, Campus Gambelas, 8005-135 Faro, Portugal. FAU - Fernandes, E AU - Fernandes E AD - CIMA, Centro de Investigacao Marinha e Ambiental, Universidade do Algarve, Campus Gambelas, 8005-135 Faro, Portugal. FAU - Abessa, D M S AU - Abessa DMS AD - NEPEA, Nucleo de Estudos em Poluicao e Ecotoxicologia, Aquatica, Universidade Estadual Paulista (UNESP), Campus do Litoral Paulista, Sao Vicente, SP 11330-900, Brazil. FAU - Tavares, A AU - Tavares A AD - Departamento de Ciencias Biomedicas e Medicina, Universidade do Algarve, Campus Gambelas, 8005-135 Faro, Portugal. FAU - Bebianno, M J AU - Bebianno MJ AD - CIMA, Centro de Investigacao Marinha e Ambiental, Universidade do Algarve, Campus Gambelas, 8005-135 Faro, Portugal. Electronic address: mbebian@ualg.pt. LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190527 PL - Netherlands TA - Environ Int JT - Environment international JID - 7807270 RN - 094ZI81Y45 (Tamoxifen) SB - IM MH - Animals MH - Biotransformation MH - Bivalvia MH - DNA Damage MH - Female MH - Gills MH - Humans MH - Male MH - Oxidative Stress/drug effects MH - Tamoxifen/*pharmacology OTO - NOTNLM OT - Biomarkers OT - Cytotoxicity OT - Human cells OT - Marine organisms OT - Tamoxifen EDAT- 2019/05/31 06:00 MHDA- 2019/10/31 06:00 CRDT- 2019/05/31 06:00 PHST- 2019/01/22 00:00 [received] PHST- 2019/05/06 00:00 [accepted] PHST- 2019/05/31 06:00 [pubmed] PHST- 2019/10/31 06:00 [medline] PHST- 2019/05/31 06:00 [entrez] AID - S0160-4120(18)33231-8 [pii] AID - 10.1016/j.envint.2019.05.014 [doi] PST - ppublish SO - Environ Int. 2019 Aug;129:256-272. doi: 10.1016/j.envint.2019.05.014. Epub 2019 May 27.