Zhen X

BACKGROUND: Polycystic ovary syndrome (PCOS) is characterized by chronic low-grade inflammation of the ovaries. This disorder of the immune microenvironment is closely related to abnormal follicular development and ovulation disorders. This…

IntroductionLuteinizing hormone (LH) is critical for follicular development and IVF pregnancy outcomes, but evidence linking trigger-day serum LH levels to IVF-ET outcomes in overweight patients is scarce. This study investigated the impact…

ObjectiveTo investigate the effects of Modified Hupo San on reproductive hormone levels and microcirculation in patients with menstrual disorders of cold congelation and blood stasis pattern.MethodsA total of 102 patients from the gynecolog…

BackgroundNatural cycle in vitro fertilization (NC-IVF) represents a convenient and safe assisted reproductive technology, making it particularly advantageous for patients with poor ovarian response (POR). This research evaluates the effect…

ObjectiveThis study aimed to analyze the effect of progesterone (P) levels on the human chorionic gonadotropin (hCG) trigger day and the progesterone on hCG day-to-basal progesterone (PhCG/Pbasal) ratio on pregnancy outcomes in patients wit…

ObjectivesThis study aimed to explore potential differences in efficacy between vaginal progesterone (VPG) and VPG + oral progesterone (OPG) for luteal-phase support in hormone replacement therapy-frozen embryo transfer (HRT-FET) cycles.Des…

This study aims to assess whether endometriosis causally increases the risk of IBD through Mendelian randomisation (MR) analysis and to elucidate potential mechanisms using in vitro experiments. A two-sample Mendelian randomisation (MR) ana…

ObjectiveTo investigate the changes in bile acid (BA) metabolites within the follicular fluid (FF) of patients with diminished ovarian reserve (DOR) and to identify novel diagnostic markers that could facilitate early detection and interven…

Study questionDoes the downregulation of cell division cycle 42 (CDC42) protein in endometrial stroma lead to endometrial senescence in patients with recurrent implantation failure (RIF), and what is the potential mechanism?Summary answerCD…

Study questionDoes abnormal serotonin homeostasis contribute to impaired endometrial decidualization in patients with recurrent implantation failure (RIF)?Summary answerAbnormal serotonin homeostasis in patients with RIF, which is accompani…

A successful embryo implantation relies heavily on the receptivity of the endometrial epithelium, a process regulated by various molecular mechanisms. Evaluating endometrial receptivity in infertility patients undergoing assisted reproducti…

Endometrial receptivity damage caused by impaired decidualization may be one of the mechanisms of infertility in endometriosis (EMs). Our previous study demonstrated that Calpain-7 (CAPN7) is abnormally overexpressed in EMs. Whether CAPN7 a…

Abstract Decidualization is a prerequisite for successful embryo implantation, in which elongated fibroblast-like endometrial stromal cells differentiate into more rounded decidual cells. Accumulating evidence has stressed the important ro…

Decidualization is a prerequisite for successful embryo implantation, in which elongated fibroblast-like endometrial stromal cells differentiate into more rounded decidual cells. Accumulating evidence has stressed the important role of the …

Recurrent implantation failure (RIF) is a rather thorny problem in the clinical practice of assisted reproductive technology. Due to the complex aetiology of RIF, its pathogenesis is far from fully understood, and there is no effective trea…

Embryo adhesion is a very important step in the embryo implantation process. Homeobox A10 (HOXA10), a key transcriptional factor of endometrial receptivity, is indispensable for embryo adhesion. However, how to control the activation status…

Decidualization is a complex process involving cellular proliferation and differentiation of the endometrial stroma and is required to establish and support pregnancy. Dysregulated decidualization has been reported to be a critical cause of…

Abstract Background Endometrial receptivity damage caused by impaired decidualization may be one of the mechanisms of infertility in endometriosis (EMs). Our previous study demonstrated that Calpain-7 (CAPN7) is abnormally overexpressed in …

Impaired decidualization has been considered a major cause of infertility in adenomyosis. However, the mechanism remains poorly understood. Recent studies suggest that microRNAs (miRNA) play a crucial role in embryo implantation. The aim of…

Recurrent implantation failure (RIF) caused by various etiological factors remains a challenge for fertility clinicians using assisted reproductive technology (ART) worldwide. Dysregulation of leukemia inhibitory factor (LIF) in the endomet…

HOXA10 has emerged as an important molecular marker of endometrial receptivity. Recurrent implantation failure (RIF) after in vitro fertilization-embryo transplantation (IVF-ET) treatment is associated with impaired endometrial receptivity,…

BackgroundDecidualization is a prerequisite for successful implantation and the establishment of pregnancy. Krüppel-like factor 12 (KLF12) is a negative regulator of endometrial decidualization in vitro. We investigated whether KLF12 was as…

BACKGROUND: The transformation of endometrium into decidua is essential for normal implantation of the blastocyst. However, the post-transcriptional regulation and the miRNAs involved in decidualization remain poorly understood. Here, we ex…

BACKGROUND: Homeobox A10 (HOXA10), a key transcription factor, plays a critical role in endometrial receptivity by regulating the expression of downstream target genes, such as β3-integrin (ITGB3), but little is understood about the mechani…

BackgroundTo determine the effect of higher progesterone (P) level on endometrial receptivity.MethodsThis was a prospective analysis conducted in the Reproductive Medical Center of Peking University Third Hospital. All patients received IVF…