Effects of tributyltin on placental cytokine production

Journal of Perinatal Medicine - Tập 46 Số 8 - Trang 867-875 - 2018
Yuko Arita1, Michael Kirk1, Neha Gupta1, Ramkumar Menon2, Darios Getahun3, Morgan R. Peltier1,2
1Department of Biomedical Research , NYU Winthrop Hospital, 101 Mineola Blvd , Mineola, NY 11501 , USA
2Department of Obstetrics and Gynecology, UTMB-Galveston, Galveston, TX, USA
3Department of Research and Evaluation , Kaiser-Permenante Southern California , Pasadena, CA , USA

Tóm tắt

Abstract Objective Tributyltin (TBT) is a persistent pollutant but its effects on placental function are poorly understood as are its possible interactions with infection. We hypothesized that TBT alters the production of sex hormones and biomarkers for inflammation and neurodevelopment in an infection-dependent manner. Methods Placental explant cultures were treated with 0–5000 nM TBT in the presence and absence of Escherichia coli. A conditioned medium was harvested and concentrations of steroids (progesterone, P4; testosterone, T and estradiol, E2) as well as biomarkers of inflammation [interleukin (IL)-1β (IL-1β), tumor necrosis factor (TNF-α), IL-10, IL-6, soluble glycoprotein 130 (sgp-130) and heme oxygenase-1 (HO-1)], oxidative stress [8-iso-prostaglandin (8-IsoP)] and neurodevelopment [brain-derived neurotrophic factor (BDNF)] were quantified. Results TBT increased P4 slightly but had little or no effect on T or E2 production. IL-1β, IL-6, sgp-130, IL-10 and 8-IsoP production was enhanced by TBT. P4 and IL-6 production was also enhanced by TBT for bacteria-stimulated cultures but TBT significantly inhibited bacteria-induced IL-1β and sgp-130 production. High doses of TBT also inhibited BDNF production. Conclusions TBT increases P4 but has minimal effect on downstream steroids. It enhances the production of inflammatory biomarkers such as IL-1β, TNF-α, IL-10 and IL-6. Inhibition of sgp-130 by TBT suggests that TBT may increase bioactive IL-6 production which has been associated with adverse neurodevelopmental outcomes. Reduced expression of BDNF also supports this possibility.

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Journal of Perinatal Medicine

Tập 46 Số 8

867-875

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