Junzhao Zhao

BACKGROUND: Few previous studies have addressed the impact of COVID-19 infection status on assisted reproductive technology outcomes. The purpose of this study was to assess whether COVID-19 infection affects ovulation induction outcomes an…

BACKGROUND: Polycystic ovary syndrome (PCOS) is a common endocrine disorder with significant impacts on women’s reproductive health. Interleukin (IL)-2 receptor subunit gamma (IL2RG), a common receptor for IL-2, IL-4, IL-7, IL-9, IL-15 and …

BACKGROUND: Approximately 50% of the women with polycystic ovary syndrome (PCOS) are overweight or obese and obesity can significantly impair reproductive function. This study aimed to investigate the association between body mass index (BM…

OBJECTIVE: Additive human menopausal gonadotropin (HMG)/recombinant luteinizing hormone (r-LH) to follicle-stimulating hormone (FSH) can improve pregnancy outcomes in patients with poor ovarian response during assisted reproductive procedur…

PURPOSE: To investigate the relationship between blood lead levels (BLLs) and IVF clinical outcomes in infertile females and to further explore the possible involvement of granulosa cell (GC) endoplasmic reticulum (ER) stress in the process…

OBJECTIVE: To investigate the feasibility of performing frozen-thawed high-quality single blastocyst transfer in women of different ages. METHODS: A total of 1,279 women were divided into four groups: a 38-40-year-old group (n = 147), 35-3…

BACKGROUND: This study was designed to evaluate pregnancy outcomes between morulae transferred on day 4 (D4) and blastocysts transferred on day 5 (D5). METHODS: From September 2017 to September 2020, 1963 fresh transfer cycles underwent ea…

BACKGROUND: The basal luteinizing hormone (LH) and the prior LH to follicle-stimulating hormone (FSH) ratio (LH/FSH) in polycystic ovarian syndrome (PCOS) are generally higher than those in non-PCOS patients and the general population. The …

INTRODUCTION: The optimal dosage of recombinant human luteinizing hormone (r-hLH) and its impact on endometrial thickness (EMT) when administered alongside recombinant human follicle-stimulating hormone (r-hFSH) during controlled ovarian st…

BACKGROUND: Assisted reproductive technology (ART) is the most effective method to treat infertility and the pathogenesis of implantation failure after in vitro fertilization-embryo transfer (IVF-ET) is a challenging filed in infertility. M…

OBJECTIVE: To compare the effects of five different frozen-thaw embryo transfer (FET) strategies in women aged 35-40 years. METHODS: Data from 1,060 patients were divided into five groups according to the number and quality of transferred …

OBJECTIVE: To investigate transfer strategies in the frozen-thawed embryo transfer (FET) cycle. METHODS: The clinical data of 1,652 FET patients were divided into five groups according to the number and quality of the transferred blastocys…

BACKGROUND: It remains controversial whether there is a difference in the prognosis of intracytoplasmic sperm injection (ICSI) using frozen or fresh testicular sperm in patients with obstructive azoospermia (OA). Moreover, in the available …

BACKGROUND: The efficiency of prolonged down-regulation caused by a full-dose of gonadotropin-releasing hormone agonist (GnRH-a) injected during different menstrual phases has not yet been researched. Our goal was to evaluate the effects of…

Objective This study evaluated associations of basal serum and follicular fluid (FF) anti-Muüllerian hormone (AMH) levels with in vitro fertilization (IVF) outcomes in polycystic ovary syndrome (PCOS) patients. Methods This prospective stud…