Ren J

Bisphenol A (BPA), an endocrine-disrupting chemical frequently detected in follicular fluid (FF), has been implicated in ovarian reserve dysfunction. However, data on the presence of its structural analogues within ovarian follicles remain …

BACKGROUND: Pelvic floor dysfunction (PFD) is a common cause of chronic constipation which can reciprocally exacerbate pelvic floor burden. However, the characteristics and evolution of pelvic floor structures in patients with constipation …

PURPOSE: To investigate whether controlled ovarian stimulation (COS), as part of assisted reproductive technology (ART), accelerates the progression of BI-RADS categories. METHODS: This was a single-center, retrospective, propensity score …

BACKGROUND: Embryo implantation failure and early pregnancy loss remain significant challenges in assisted reproductive technology (ART). Lipid peroxidation is known to be involved in reproductive physiology. However, its role during the im…

PURPOSE: This study aims to compare the live birth rate (LBR) and reproductive outcomes between gonadotropin-releasing hormone antagonist (GnRH-ant) and progestin-primed ovarian stimulation (PPOS) protocols in infertile women of advanced re…

ImportanceTonsillectomy has long been scrutinized for its potential long-term impacts on health, with conflicting evidence linking it to increased risks of several diseases, such as cancer, psychiatric disorders, and immune dysfunctions.Obj…

BACKGROUND: Compared with overnight insemination, it remains uncertain whether short-term insemination can improve outcomes in poor responders, and few studies have used cumulative live birth rate as the primary endpoint. The study aims to …

The female immune system operates within an evolutionary stability-plasticity trade-off, where the physiological demands of pregnancy necessitate a considerable degree of regulatory T cell (Treg) plasticity. This essential flexibility, howe…

BACKGROUND: Carotenoids, known for their antioxidant properties and potential health benefits, have attracted considerable attention. Nonetheless, the association between carotenoid levels and gallstone prevalence has not been adequately ex…

BACKGROUND: Premenstrual dysphoric disorder (PMDD) has been identified as a member of the Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5). The symptoms of premenstrual syndrome are uncertain, and these uncertain s…

PURPOSE: To compare the clinical outcomes of extremely poor responders with one or two oocytes who receive in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI). METHODS: A retrospective study was carried out on 2572 pat…

BACKGROUND: The aetiology and pathogenesis of adenomyosis remain unclear. This study utilised untargeted metabolomics to explore the aberrant amino acid metabolism in adenomyosis. Among the studied metabolites, hydroxyproline is known to pr…

BACKGROUND: Recurrent implantation failure (RIF) remains a significant barrier in assisted reproductive technology (ART), where multiple transfers of high-quality embryos fail to achieve pregnancy. While embryo-related factors have been ext…

PURPOSE: This study was designed to evaluate the effects of dual trigger (GnRH agonist and hCG) compared with hCG trigger alone on oocyte quality, embryo development, and pregnancy outcomes in elderly women (aged≥35 years) who underwent IVF…

PURPOSE: To evaluate the value of mtDNA copy number measurement in spent culture medium of blastocysts for predicting the chance of implantation following single blastocyst transfer (SBT). METHODS: Copy numbers of mtDNA and genomic DNA (gD…

BACKGROUND: E2 is important in follicular development. During monitoring of stimulated cycles, serum levels of E2 are expected to increase steadily with follicle growth until final maturation. Unexpected E2 decline before triggering is repo…

OBJECTIVES: To develop an innovative magnetic resonance imaging (MRI)-based PUMCH (Peking Union Medical College Hospital) classification system aimed at standardising the diagnosis of congenital cervical malformations (CCMs) by identifying …

BACKGROUND: Exposure to metal could impact women's depression risk. However, the connection and mechanisms between metalloestrogens exposure and depression are still not fully understood. We aim to explore the associations between metalloes…

OBJECTIVE: To investigate the interaction between atosiban and growth hormone (GH) as adjuvants in frozen-thawed embryo transfer (FET) cycles. METHOD: A total of 11627 patients who underwent FET at Xiamen University Affiliated Chenggong Ho…

BACKGROUND: Low-dose aspirin is one of the widely used adjuvants in assisted reproductive technologies with the hope of improving the live birth rate. However, the studies regarding its effects are conflicting. The study aimed to investigat…

RESEARCH QUESTION: Does the observed correlation between dyslipidaemia and endometriosis indicate a bidirectional causal association? DESIGN: Bidirectional Mendelian randomization was used to investigate the causal association between lipi…

PURPOSE: Microgravity, characterized by gravity levels of 10-3-10-6g, has been found to significantly impair various physiological systems in astronauts, including cardiovascular function, bone density, and metabolism. With the recent surge…

Osteosarcoma is an aggressive form of bone cancer and affects the health in children and adolescents. Although conventional treatment improves the osteosarcoma survival, some patients have metastasis and drug resistance, leading to a worse …

Acute pancreatitis (AP) is an inflammatory disease of the pancreas and a complex process involving multiple factors, with mitochondrial damage playing a crucial role. Mitochondrial dysfunction is now considered a key driver in the developme…

OBJECTIVE: To investigate whether using Zishen Yutai Pills (ZYP) following embryo transfer would affect the live birth rate in frozen-thawed embryo transfer (FET) cycles. METHODS: A retrospective analysis was performed on 15044 FET cycles …