宫腔镜子宫内膜息肉切除术后应用黄体酮栓预防复发的效果

目的 探讨子宫内膜息肉行宫腔镜治疗术后应用黄体酮栓预防复发的临床效果。方法 选取2015年1月~2017年12月在本院行宫腔镜引导下子宫内膜息肉切除手术治疗，且术后病理诊断符合子宫内膜息肉的患者220例为研究对象，根据术后治疗方法的不同分为研究组（106例）与对照组（114例），研究组术后应用黄体酮栓治疗，对照组未用药物治疗，比较两组术后3、6、12个月子宫内膜厚度，月经改变情况及复发情况。结果 研究组术后6、12个月子宫内膜厚度及复发率均优于对照组，差异有统计学差异（P＜0.05）；研究组术后3、6、12个月的月经量改善优于对照组，差异有统计学意义（P＜0.05），术后6个月经期情况比较，差异有统计学意义（P＜0.05）；术后3、12个月经期比较，差异无统计学意义（P＞0.05），9例（8.74%）出现乳房胀痛、头晕，偶有患者点滴出血等不适，均可以耐受。结论 宫腔镜术后应用黄体酮栓治疗子宫内膜息肉有助于降低复发率，改善月经情况，疗效可靠。     

以孕酮水平确定冻融胚胎移植时间的临床研究

目的比较基于排卵监测的方案(MOR)与基于孕酮水平监测的方案(MPR)确定自然周期冻融胚胎移植(FET)时机的临床结局。方法回顾性分析190个自然周期FET的临床资料。结果 61.1%(116/190)的周期应用MPR方案,38.9%(74/190)为MOR方案;MOR组生化妊娠率为9.5%,同MPR组(1.7%)相比显著升高(P=0.014);然而,MPR、MOR组的临床妊娠率相似,分别为53.4%及51.4%,种植率、持续妊娠率及活产率的差异亦无统计学意义(P0.05)。多元Logistic回归分析显示移植方案是生化妊娠的独立影响因素,MPR与生化妊娠呈负相关[(OR0.050,95%CI(0.004,0.593)](P=0.018)。结论在基本情况及周期治疗情况相似的患者中,与MOR方案相比,MPR方案进行自然周期FET可能获得更低的生化妊娠率(即更低的妊娠丢失率),但仍需进一步研究证实。     

Progestin-inducible EDD E3 ubiquitin ligase binds to α4 phosphoprotein to regulate ubiquitination and degradation of protein phosphatase PP2Ac

Mammalian α4 phosphoprotein binds to the protein phosphatase 2A catalytic subunit (PP2Ac) to regulate PP2A activity, and to poly(A)-binding protein (PABP) and progestin-inducible EDD E3 ubiquitin ligase. This study showed induction of the EDD protein by progesterone, 17β-estradiol and prolactin in breast cancer cells. Co-immunoprecipitation analyses, using lysates of COS-1 cells transfected with α4-deletion constructs, showed the α4 N-terminus binding to endogenous PP2Ac and PABP, and the C-terminus to EDD. Monoubiquitinated α4 in MCF-7 cells was unaffected by EDD-targeting siRNA (siEDD) nor by non-targetting siNT, thus, EDD does not ubiquitinate α4. PP2Ac is polyubiquitinated, and 36-kDa PP2Ac only was detected in siEDD- or siNT-transfected cells. However, treatment with proteasomal inhibitor MG132 showed polyubiquitinated-PP2Ac molecules (∼65–250 kDa) abundantly in siNT controls but low in siEDD-transfectants, implicating PP2Ac as an EDD substrate. Finally, progesterone induction of EDD in MCF-7 cells correlated with decreased PP2Ac levels, further implicating hormone-inducible EDD in PP2Ac turnover.     

黄体酮对新生儿缺氧缺血性脑病作用的研究进展

新生儿缺氧缺血性脑病病死率和致残率较高,且缺乏有效的治疗方法,所以至今仍为医学界的难题.黄体酮作为神经类固醇激素已经证实对新生儿缺氧缺血性脑病有保护作用,且已经应用于Ⅱ期临床试验.该文综述黄体酮对新生儿缺氧缺血性脑病的治疗进展.     

Sex,hormones, and stress: How they impact development and function of the carotid bodies and related reflexes

Progesterone and corticosterone are key modulators of the respiratory control system. While progesterone is widely recognized as an important respiratory stimulant in adult and newborn animals, much remains to be described regarding the underlying mechanisms. We review the potential implication of nuclear and membrane progesterone receptors in adults and in newborns. This raises intriguing questions regarding the contribution of progesterone as a protective factor against some respiratory control disorders during early life. We then discuss our current understanding of the central integration of stressful stimuli and the responses they elicit. The fact that this system interacts with the respiratory control system, either because both share some common neural pathways in the brainstem and hypothalamus, or because corticosterone directly modulates the function of the respiratory control network, is a fascinating field of research that has emerged over the past few years. Finally, we review the short- and long-term consequences of disruption of stress circuitry during postnatal development on these systems.