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1. PCB153 (2,2′,4,4′,5,5′-hexachlorobiphenyl) differentially affects the VEGF/VEGFR system depending on photoperiod in the ovine choroid plexus

Author:
Lagaraine, Christine,   et al.   ; Szczepkowska, Aleksandra; Robert, Vincent; Młynarczuk, Jarosław; Dufourny, Laurence; Thiéry, Jean-Claude; Skipor, Janina;     Show all 7 Authors
Source:
Ecotoxicology and environmental safety 2016 v.124 pp. 303-308
ISSN:
0147-6513
Subject:
adults; brain; cerebrospinal fluid; choroid plexus; endothelium; ewes; messenger RNA; ovariectomy; photoperiod; polychlorinated biphenyls; protein content; tight junctions; vascular endothelial growth factor receptor-1; vascular endothelial growth factor receptor-2; vascular endothelial growth factors
Abstract:
... Ortho-substituted polychlorinated biphenyls (PCBs) preferentially accumulate in the brain and cerebrospinal fluid (CSF) compared with other PCBs. We previously demonstrated in ewes that an identical dose of PCB153, the most environmentally prevalent congener, resulted in a higher plasma concentration during short days (SD: 1200pg/ml) than during long days (LD: 200pg/ml). Moreover, PCB153 treatment ...
DOI:
10.1016/j.ecoenv.2015.11.007

2. Photoperiod modulates access of 2,2′,4,4′,5,5′-hexachlorobiphenyl (PCB153) to the brain and its effect on gonadotropin and thyroid hormones in adult ewes

Author:
Lagaraine, Christine,   et al.   ; Skipor, Janina; MŁynarczuk, JarosŁaw; Szczepkowska, Aleksandra; Grochowalski, Adam; Guillaume, Daniel; Dufourny, Laurence; Thiéry, Jean-Claude;     Show all 8 Authors
Source:
Ecotoxicology and environmental safety 2012 v.78 pp. 336-343
ISSN:
0147-6513
Subject:
adults; brain; cerebrospinal fluid; ewes; luteinizing hormone; oral administration; photoperiod; polychlorinated biphenyls; reproduction; seasonal variation; triiodothyronine
Abstract:
... The effects of photoperiod on the cerebrospinal fluid (CSF) concentration of six ortho-substituted polychlorinated biphenyls (PCBs: PCB28, PCB52, PCB101, PCB138, PCB153, and PCB180), the effects of an orally administered low dose of PCB153 (0.3mg/kg, three times a week for three weeks) on PCBs and thyroid hormones (THs) concentrations in the CSF and plasma, and the release of luteinizing hormone ( ...
DOI:
10.1016/j.ecoenv.2011.11.042