咖啡因所致子代海马发育毒性及发生机制
首发时间:2015-12-01
摘要:目的:探讨孕期咖啡因摄入所致成年子代海马发育损伤及发生机制。方法:Wistar受孕大鼠分为对照组和咖啡因组,咖啡因组于孕9日(GD9)至GD20以120 mg/kg咖啡因经口灌胃,孕鼠自然生产,仔鼠于出生后12周处死。检测成年仔鼠海马相关指标。结果:与对照组相比,孕期咖啡因摄入可引起成年仔鼠海马组织突触可塑性和细胞增殖功能改变,并存在一定的性别差异;同时海马组织BDNF通路和IGF1通路抑制,并存在性别差异,以雌性明显。结论:孕期咖啡因摄入可引起子代海马功能发育损伤,可能与BDNF通路和IGF1通路抑制有关。
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Caffeine induced hippocampus toxicology in offspring rats and its mechanism
Abstract:Objectives: This study aims to investigate the mechanism of synaptic plasticity injury of hippocampus induced by prenatal caffeine intake. Methods: Pregnant rats ingested different doses of caffeine (120 mg/kg) once per day, then were naturally delivery and the offspring were fed with normal diet to adulthood. Results: As compared with the control, the numbers of hippocampus neurons and synaptic plasticity were decreased in caffeine group. Further, caffeine significantly decreased the BDNF and IGF1 signaling pathway, especially in female rats. Conclusion: Prenatal caffeine exposure can induce hippocampal toxicology in offspring rats, which may induced by inhibition of BDNF and IGF1 pathways.
Keywords: caffeine hippocampus development toxicology
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