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PNAS:研究发现来自脂肪组织的脂联素可对抗多囊卵巢综合征

2017-08-11 佚名 来宝网

肥胖和胰岛素敏感性降低在多囊卵巢综合征PCOS中很常见。基于动物研究的新研究,并将在PNAS杂志上发表,揭示激素脂联素可以防止这些变化。

肥胖和胰岛素敏感性降低在多囊卵巢综合征PCOS中很常见。基于动物研究的新研究,并将在PNAS杂志上发表,揭示激素脂联素可以防止这些变化。

多囊卵巢综合征影响超过十分之一的育龄妇女。其特征是男性性激素睾酮水平高,排卵紊乱,可引起不孕。 PCOS通常与超重和对葡萄糖调节激素胰岛素的反应能力有关,即所谓的胰岛素抵抗。这反过来导致2型糖尿病的风险增加。

以哥德堡大学和卡罗林斯卡研究所为首的国际研究小组以前表明,具有PCOS的妇女脂肪组织衍生的激素脂联素水平较低。此外,在这些女性中,低脂联素水平,腰围增加,大脂肪细胞和胰岛素抵抗之间存在着密切联系。然而,低脂联素水平与PCOS代谢紊乱之间的因果关系尚未得到证实。

在这项新的研究中,研究人员研究了两种基因改造的雌性小鼠。在一组中,他们研究了具有升高的脂联素水平的小鼠,以及其他缺乏脂联素的小鼠。每组中的一半小鼠接受雄性性激素,其在正常小鼠中诱导PCOS症状。显示具有高水平脂联素的小鼠被保护以防止与PCOS相关的代谢紊乱,例如胰岛素抵抗和腹部肥胖。然而,脂联素不能防止排卵中断。

“结果表明,脂联素在脂肪组织功能中起重要作用,也可能在PCOS妇女中发挥肥胖和胰岛素抵抗的作用。因此,与脂联素相似的药物可能是影响PCOS妇女代谢紊乱的有效治疗方法 ”。

原始出处:
Benrick A, Chanclón B, Micallef P,et al.Adiponectin protects against development of metabolic disturbances in a PCOS mouse model.Proc Natl Acad Sci U S A. 2017 Aug 8. pii: 201708854. doi: 10.1073/pnas.1708854114. [Epub ahead of print]

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    2017-09-16 drwjr
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患有妊娠期糖尿病(GDM)的母亲产下的婴儿将来有着更高的风险出现代谢性问题。研究人员通过选择合理的影响因子、脂肪组织(AT)的重量和分布、肝细胞内脂质(IHCL)含量,比较有GDM和无GDM的产妇产下的婴儿在出生后3个月的差别。该研究为前瞻性的纵向研究,利用MRI和光谱定量分析在出生后、2周、8-12周时检测全身和局部的脂肪体积、IHCL含量。并校正婴儿的体型大小、性别、产妇孕前的BMI。研究人员

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