Clin Endocrinol:雌激素治疗可增加神经性厌食女孩BMD

2013-09-03 佚名 丁香园

神经性厌食(AN)的青少年是有闭经,并且有骨量增长减少和低骨矿密度(BMD)。间充质干细胞分化调节是一种调节骨形成的重要因素。前脂肪细胞因子1(Pref-1),一种脂肪细胞和成骨细胞分化的抑制剂,在雌激素缺乏状态下升高。为了探讨AN的青春期女孩雌二醇经皮给药对Pref-1的影响,并检测Pref-1变化与腰椎BMD和骨转换标志物变化之间的关系,来自美国哈佛大学医学院的Anne

神经性厌食(AN)的青少年是有闭经,并且有骨量增长减少和低骨矿密度(BMD)。间充质干细胞分化调节是一种调节骨形成的重要因素。前脂肪细胞因子1(Pref-1),一种脂肪细胞和成骨细胞分化的抑制剂,在雌激素缺乏状态下升高。为了探讨AN的青春期女孩雌二醇经皮给药对Pref-1的影响,并检测Pref-1变化与腰椎BMD和骨转换标志物变化之间的关系,来自美国哈佛大学医学院的Anne Klibanski教授及其团队进行了一项研究,该研究发现AN青春期女孩使用雌激素后Pref-1下调。AN女孩Pref-1的抑制可能由雌二醇经皮替代治疗对BMD的有益影响介导。该研究结果发表在2013年9月的Clinical Endocrinology杂志上。【原文下载

该研究中,横断面研究AN青春期女孩和正常体重对照者。在一项双盲研究中,接受雌二醇经皮给药(加用周期性甲羟孕酮)或安慰剂治疗12个月,纵向调查AN女孩。在基线研究69例13-18岁女孩(44例为AN,25例为正常体重对照者),22例AN女孩之后进行前瞻性研究。测量Pref-1水平、骨形成和骨吸收标志物和BMD.该研究结果表明,尽管在基线时,AN女孩与对照组相比,Pref-1水平没有差别,与安慰剂组相比,雌二醇经皮给药组治疗后AN女孩Pref-1水平下降。12个月期间Pref-1的变化与腰椎BMD变化呈负相关,而与CTX变化呈正相关。

该研究发现,AN青春期女孩使用雌激素后Pref-1下调。AN女孩Pref-1的抑制可能由雌二醇经皮替代治疗对BMD的有益影响介导。

原文下载:

Faje AT, Fazeli PK, Katzman D, Miller KK, Breggia A, Rosen CJ, Mendes N, Misra M, Klibanski A. Inhibition of Pref-1 (preadipocyte factor 1) by oestradiol in adolescent girls with anorexia nervosa is associated with improvement in lumbar bone mineral density.Clin Endocrinol (Oxf). 2013 Sep;79(3):326-32. doi: 10.1111/cen.12144. Epub 2013 Jul 2.

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据一项新的研究报告,在绝经后妇女中,雌激素可帮助保护其尿路免受感染。 这些发现可帮助解释为什么雌激素补充剂可在绝经后妇女中抵御感染复发。尿路感染或UTIs是妇女看医生的最常见原因之一——有多达60%的妇女至少会发生一次UTI,有25%的妇女有过反复的尿路感染。 Petra Lüthje及其同事如今显示,雌激素可增加身体自制的被称作抗菌肽的抗生素的产生。研究人员给一组绝经后妇女为期2周的雌激素补

雌激素有助抵御尿路感染

一项新研究称,在绝经后妇女中,雌激素可帮助保护其尿路免受感染。这些发现有助解释为什么雌激素补充剂可在绝经后妇女中抵御感染复发。 有多达60%的妇女至少会发生一次尿路感染,有25%的妇女有过反复的尿路感染。 Petra Lthje及其同事发现,雌激素可增加身体自制的被称作抗菌肽的抗生素的产生。研究人员给一组绝经后妇女为期2周的雌激素补充剂,并进行了分析。他们发现,雌激素会作用于基因表达,以帮助激