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Prenatal vanadium exposure, cytokine expression, and fetal growth: A gender-specific analysis in Shanghai MCPC study.
Sci Total Environ ; 685: 1152-1159, 2019 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-31390705
Increasing evidence supports that maternal exposure to vanadium (V) is associated with adverse birth outcomes including preterm birth and low birth weight. However, the effect of V exposure on intrauterine fetal growth and the underlying biological mechanism are still unclear. The present study includes 227 mother-infant pairs from the Shanghai Maternal-Child Pairs Cohort to assess the gender-specific effect of intrauterine V exposure on fetal growth and related cytokines. Maternal blood samples were collected to measure V concentration and biomarkers of growth. We used multiple linear regression to evaluate the gender-specific effect of prenatal V exposure on birth parameter and growth-related cytokines. Mixed-effect models were applied to assess the non-linear association between gestational V exposure and intrauterine fetal growth. Covariates adjusted in the regression models as potential confounders including maternal age, pre-pregnancy body mass index, gestational weeks, parity, socio-demographic status, etc. Results showed that prenatal V exposure was negatively associated with birth weight (ß = -64.73) in female newborns and body length (ß = -0.10) in male. During the fetal period, maternal V exposure was associated with decreased biparietal diameter (ß = -0.91), head circumference (ß = -2.96), femur length (ß = -0.72) and humerus length (ß = -0.64) in male. Trimester-specific analyses showed that serum V concentration in the second trimester was associated with significant reductions in intrauterine growth parameters. Besides, prenatal V exposure could down-regulate the expression of growth hormone (GH) in both maternal blood (ß = -0.23) and umbilical cord blood (ß = -1.66) in male fetuses, and the expression of brain derived neurotrophic factor (BDNF) in cord blood in females (ß = -0.52). Our results suggest that prenatal V exposure has a gender-specific effect on fetal growth and the second trimester may be a sensitive window. The disruption of grow-related cytokines may potentially be the biological mechanism of these effects.





Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Assunto principal: Vanádio / Citocinas / Exposição Materna / Poluentes Ambientais Tipo de estudo: Estudo de coorte Aspecto clínico: Etiologia Limite: Feminino / Humanos / Recém-Nascido / Gravidez País/Região como assunto: Ásia Idioma: Inglês Revista: Sci Total Environ Ano de publicação: 2019 Tipo de documento: Artigo País de afiliação: China