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  • Title: Increased levels of bisphenol A (BPA) in Thai girls with precocious puberty.
    Author: Supornsilchai V, Jantarat C, Nosoognoen W, Pornkunwilai S, Wacharasindhu S, Soder O.
    Journal: J Pediatr Endocrinol Metab; 2016 Nov 01; 29(11):1233-1239. PubMed ID: 26812862.
    Abstract:
    BACKGROUND: Reports on the secular trend of pubertal onset indicate a recent earlier start especially in girls. Bisphenol A (BPA), which posses estrogenic activity, might be a cause of advanced puberty. The objective of the study was to determine the association between BPA and advanced puberty. METHODS: A cross-sectional study was conducted in patients with advanced puberty (n=41) compared to age-matched controls (n=47). Anthropometric measurements, estradiol, basal and gonadotropin releasing hormone (GnRH)-stimulated follicle stimulating hormone (FSH) and luteinizing hormone (LH) levels, uterine sizes, ovarian diameters and bone ages were obtained. Urinary BPA concentrations were analyzed by ultra-performance liquid chromatography-tandem mass spectrometry (UPLC/MSMS) with the lower limit of quantification (LLOQ) of 0.05 ng/mL. RESULTS: The median adjust-BPA concentration in advanced puberty group was higher than in control groups [1.44 vs. 0.59 μg/g creatinine (Cr): p<0.05]. We also found that the median adjust-BPA concentration in girls with advanced puberty who were overweight/obese, was greater than in the normal pubertal overweight/obese girls (1.74 vs. 0.59 μg/g Cr: p<0.05), and was in the same trend among normal weight girls with advanced and normal puberty (0.83 vs. 0.49 μg/g Cr: p=0.09), but not statistically significant. CONCLUSIONS: The present findings suggest that BPA exposure appears to be related to an earlier age at onset of puberty especially in obese girls.
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