Should we stop screening for chronic endometritis?

Chronic endometritis is a poorly understood infectious or inflammatory process, potentially disrupting the correct implantation of a human embryo (Puente et al., 2020). The exact prevalence is a subject of discussion and ranges across the available literature from 2% to almost 60%, with a higher suspicion of the condition being present in women with recurrent early pregnancy loss and recurrent implantation failure (Puente et al., 2020). The impact of chronic endometritis on reproductive outcomes following IVF remains questionable given the lack of proper data convincingly showing an improvement after diagnosis and treatment. This article aims to provide the reader with a critical appraisal of current diagnostic methods, treatments and patient populations to be tested for chronic endometritis.     

利用高糖高脂饮食建立胰岛素抵抗大鼠模型

目的：通过给予Wistar大鼠喂养高糖高脂饮食,探索诱发建立胰岛素抵抗（IR）动物模型的方法。方法：24只Wistar大鼠随机分为普通饲料组和高糖高脂饲料配方组,喂饲12周后采血,生化及酶联免疫分析检测血糖、血脂及胰岛素水平,观察其对血清胰岛素抵抗的影响。结果：与对照组比较,模型组大鼠血低密度脂蛋白（LDL—C）、总胆固醇（TC）、甘油三酯（TG2）、空腹血糖（FPG）明显升高,且具有统计学意义（P〈0．05）,并且两组之间比较,空腹血胰岛素水平（FINs）、胰岛素敏感指数（ISI）、胰岛素抵抗指数（HOMO—IR）亦有明显差异,ISI明显下降,而HOMO—IR明显上升,且具有统计学意义（P〈0．05）。结论：通过给Wistar大鼠喂养高糖高脂饮食能够诱发稳定的高糖高脂大鼠模型,可以初步建立胰岛素抵抗伴有胰岛素分泌不足的动物模型,而不只是单一的胰岛素抵抗动物模型。这一动物模型符合人类胰岛素抵抗发生的规律,是较为理想的动物模型。