PLoS ONE:杀虫剂或可增加个体患糖尿病、肥胖等代谢疾病的风险

2014-08-04 佚名 生物谷

近日,一项来自加利福尼亚大学研究人员的研究表示,怀孕小鼠暴露于杀虫剂DDT中(氯二苯三氯乙; 杀虫剂的一种)或可致其后代肥胖、糖尿病、高胆固醇的风险升高,相关研究成果刊登于国际杂志PLoS ONE上。研究者表示,DDT的暴露或可导致怀孕小鼠后代代谢综合征风险的升高,20世纪70年代美国已经明令禁止使用DDT,但是在印度和南非等国家长期以来DDT一直被用于预防和控制疟疾的传播。文章中,研究者给予小鼠

近日,一项来自加利福尼亚大学研究人员的研究表示,怀孕小鼠暴露于杀虫剂DDT中(氯二苯三氯乙; 杀虫剂的一种)或可致其后代肥胖、糖尿病、高胆固醇的风险升高,相关研究成果刊登于国际杂志PLoS ONE上。[pdf free]


研究者表示,DDT的暴露或可导致怀孕小鼠后代代谢综合征风险的升高,20世纪70年代美国已经明令禁止使用DDT,但是在印度和南非等国家长期以来DDT一直被用于预防和控制疟疾的传播。

文章中,研究者给予小鼠一定剂量的DDT,该剂量和疟疾感染区域DDT的喷洒量剂量相当,随后对这些小鼠进行研究,Michele La Merrill教授表示,本项研究中的女性和男性个体均易发生代谢综合征,而其发病往往是在中年和老年阶段。幼崽出生前DDT的暴露会减缓雌性怀孕小鼠的代谢以及其对低温的耐受性,同时也会增加其患代谢综合征的风险。研究者表示,作为哺乳动物我们必须调节机体的温度以正常地生存,而DDT则会降低雌性小鼠机体产生热量的能力,如果机体不能够产生足够的热量,那么将会影响正常地生存。

这项研究中研究者揭示了小鼠在面对DDT时明显的性别差异反应,DDT往往会增加雌性个体患肥胖、II型糖尿病以及高胆固醇症的风险,而对于雄性个体来讲,DDT的暴露并不会导致其肥胖以及发生任何代谢综合征疾病。

高脂肪饮食会引发雌性小鼠血糖、胰岛素以及胆固醇发生很多代谢问题,但是这对于雄性个体来讲并不是问题,当然研究者表示,后期他们还将通过更为深入的研究来揭示为何这些代谢变化会存在不同性别之间存在明显的差异。

原始出处:

Michele La Merrill, Emma Karey, Erin Moshier, Claudia Lindtner, Michael R. La Frano, John W. Newman, Christoph Buettner.Perinatal Exposure of Mice to the Pesticide DDT Impairs Energy Expenditure and Metabolism in Adult Female Offspring.Plos ONE July 30, 2014DOI: 10.1371/journal.pone.0103337[pdf free]

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    2015-04-11 x35042875

    糖尿病肾病进展风险的关系没有发现。

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