Frontiers in endocrinology

RESEARCH QUESTION: Can machine learning models accurately predict the risk of early miscarriage following single vitrified-warmed blastocyst transfer (SVBT)? DESIGN: A dual-center retrospective analysis of 1,664 SVBT cycles, including 308 …

BACKGROUND: To date, there is no consensus on the optimal endometrial preparation protocol for frozen-thawed embryo transfer (FET) in patients with a thin endometrium. This study evaluated the effects of different endometrial preparation pr…

Semen quality is a key factor in male fertility, but defining normal reference values for semen parameters remain challenging. Over the past four decades, several authors have reported a noticeable decline in sperm parameters, raising conce…

BACKGROUND: Endometriosis (EMS) and adenomyosis have adverse effects on women's fertility. In vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) are effective treatments for these diseases. Research has shown that differe…

BACKGROUND: The global health crisis of coronavirus disease 2019 (COVID-19) continues to impact people of all age groups worldwide. Recent studies increasingly support that COVID-19 infection may affect reproductive function, causing subfer…

OBJECTIVE: This study explores the metabolic profiles in the peripheral blood of infertile patients with adenomyosis (ADM) to identify key metabolites affecting pregnancy outcomes in these patients undergoing frozen embryo transfer (FET). O…

BACKGROUND: Chronic low-grade inflammation is increasingly recognized as a contributing factor to female infertility. Elevated levels of pro-inflammatory cytokines such as TNF-α, IL-1β, and IL-6 are observed in ovarian conditions including …

OBJECTIVE: Proteomic analysis was conducted on human follicular fluid (FF) using the 4D label-free method to identify proteins potentially influencing oocyte quality in hyperandrogenic (HA) polycystic ovary syndrome (PCOS) patients. METHOD…

BACKGROUND: Many components in follicular fluid (FF), such as peptide hormones, cytokines, and steroids, undergo dynamic changes during folliculogenesis and have important roles in follicular development. Because systemic inflammation has a…

BACKGROUND: Relugolix offers a promising alternative for endometriosis-associated pain, yet its comprehensive impact on health-related quality of life (HRQoL), particularly as measured by the disease-specific EHP-30 questionnaire, remains u…

BACKGROUND: Patients with adenomyosis frequently experience menorrhagia and dysmenorrhea. Levonorgestrel-releasing intrauterine device (LNG-IUD) and oral norethindrone are widely used non-surgical treatment options. However, their associate…

OBJECTIVE: To evaluate the dynamics of serum medroxyprogesterone acetate (MPA) concentrations and their influence on serum progesterone (P) levels and pregnancy outcomes in the progestin-primed ovarian stimulation (PPOS) protocol. A total o…

BACKGROUND: Endometriosis (EMs) is a common condition that causes dysmenorrhea, chronic pelvic pain, and infertility, affecting millions of women worldwide. Despite the use of assisted reproductive technology, EMs patients often experience …

BACKGROUND: Polycystic ovary syndrome (PCOS) and type 2 diabetes mellitus (T2DM) are two prevalent and interrelated disorders that pose an increasingly significant global health burden. Cellular senescence may represent a pivotal process dr…

INTRODUCTION: A significant proportion of women in their reproductive years are afflicted by endometriosis. And one of the major contributing factors to infertility linked to ovarian endometriosis is thought to be oocyte quality. The precis…

OBJECTIVE: This study aimed to explore the differences in symptom clusters of adenomyosis (AM) patients across spatial, temporal, and age-stratified dimensions based on the theory of "Treatment in Accordance with Three Categories of Etiolog…

OBJECTIVE: The aim of this study was to investigate the relationship between endometrial thickness (EMT) on human chorionic gonadotropin (hCG) day in the progestin-primed ovarian stimulation (PPOS) protocol and pregnancy outcomes in the sub…

Diminished ovarian reserve (DOR) is characterized by a decrease in the quantity and quality of oocytes, leading to reduced chances of natural conception and a poorer response to fertility treatments. Along with these reproductive challenges…

BACKGROUND: Infertility is a public health issue closely related to obesity. However, the relationship between obesity-related indicators and infertility is currently uncertain. The present study aimed to explore the association between obe…

BackgroundThe aim of the present study was to investigate whether the CGG repeat length and AGG interruption patterns on the FMR1 gene affect female fecundity.MethodsA total of 266 infertile patients and 276 fertile controls were included i…

BACKGROUND: Endometriosis-associated ovarian cancer (EAOC), an aggressive form of malignant ovarian neoplasm with origins in endometriosis (EM), has risen to prominence recently. Despite extensive investigation, the precise pathophysiology …

OBJECTIVE: To analyze the expression levels of the oocyte-secreted factors growth differentiation factor-9 (GDF-9) and bone morphogenetic protein-15 (BMP-15) in cumulus cells (CCs) under different controlled ovarian stimulation (COS) protoc…

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…

OBJECTIVE: This study aimed to assess the impact of inoculation with the inactivated coronavirus disease 2019 (COVID-19) vaccine on the outcomes of in vitro fertilization and embryo transfer (IVF-ET). METHODS: From January 2021 to December…

INTRODUCTION: The global rise in obesity is linked to metabolic disorders, such as neuropathy and infertility. Our study aimed to analyze the effects of preconceptional weight loss in infertile women with obesity on peripheral sensory and c…