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EC number: 201-245-8
CAS number: 80-05-7
Bisphenol A; BPA
There were no BPA-related effects on adult mating, fertility or gestational indices, ovarian primordial follicle counts, estrous cyclicity, precoital interval, offspring sex ratios or postnatal survival, sperm parameters, or reproductive organ weights or histopathology (including the testes and prostate). Adult systemic effects: at 300 ppm, only centrilobular hepatocyte hypertrophy; at 3500 ppm, reduced body weight, increased kidney and liver weights, centrilobular hepatocyte hypertrophy, and renal nephropathy in males. At 3500 ppm, BPA also reduced F1/F2 weanling body weight, reduced weanling spleen and testes weights (with seminiferous tubule hypoplasia), slightly delayed PPS, and apparently increased the incidence of treatment-related, undescended testes only in weanlings, which did not result in adverse effects on adult reproductive structures or functions; this last finding is considered a developmental delay in the normal process of testes descent. It is likely that these transient effects were secondary to (and caused by) systemic toxicity. Gestational length was increased by 0.3 days in F1/F2 generations; the toxicological significance, if any, of this marginal difference is unknown. At lower doses (0.018 - 30 ppm), there were no treatment-related effects and no evidence of non-monotonic dose response curves for any parameter. The systemic NOEL was 30 ppm BPA (approximately 5 mg/kg-day); the reproductive/developmental NOEL was 300 ppm (approximately 50 mg/kg-day).
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