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  • Title: Prenatal ethanol exposure enhances the susceptibility to metabolic syndrome in offspring rats by HPA axis-associated neuroendocrine metabolic programming.
    Author: Xia LP, Shen L, Kou H, Zhang BJ, Zhang L, Wu Y, Li XJ, Xiong J, Yu Y, Wang H.
    Journal: Toxicol Lett; 2014 Apr 07; 226(1):98-105. PubMed ID: 24472613.
    Abstract:
    OBJECTIVE: The present study was designed to demonstrate that prenatal ethanol exposure (PEE) could enhance the susceptibility of high-fat diet-induced metabolic syndrome (MS) in adult male offspring via a hypothalamic-pituitary-adrenal (HPA) axis-associated neuroendocrine metabolic programmed mechanism. METHODS: Pregnant Wistar rats were intragastricly administrated ethanol 4 g/kg·d from gestational day 11 until term delivery. All male offspring were fed with high-fat diet after weaning, exposed to an unpredictable chronic stress at postnatal week (PW) 17 and sacrificed at PW20. RESULTS: In PEE group, body weight presented a "catch-up growth" pattern, and the HPA axis exhibited a lower basal activity but an enhanced sensitivity to chronic stress, leading to increased levels of serum glucose, insulin, insulin resistant index, total cholesterol and low-density lipoprotein-cholesterol, and decreased levels of high-density lipoprotein-cholesterol. Furthermore, many lipid droplets and vacuolar degeneration were observed in the hypothalamus, pituitary gland and liver. CONCLUSIONS: PEE induces enhanced susceptibility to MS in adult offspring fed with high-fat diet, and the underlying mechanism involves a HPA axis-associated neuroendocrine metabolic programming alteration.
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