Letrozole During Frozen Embryo Transfer in Women With Polycystic Ovarian Syndrome: A Randomized Controlled Trial.

Objective: To compare live-birth rates between letrozole application and artificial cycle for endometrium preparation during frozen embryo transfer (FET) cycle among women with polycystic ovarian syndrome (PCOS).

Methods: A randomized controlled trial was conducted. Women with PCOS were randomized to letrozole application for ovulation induction compared with artificial cycle for endometrial preparation during FET.

Vessel-Sparing Microsurgical Longitudinal Intussusception Vasoepididymostomy to Treat Epididymal Obstructive Azoospermia.

The epididymis is a common site of obstruction in obstructive azoospermia (OA). Vasoepididymostomy has become an important method for the treatment of epididymal OA since 2000. There are two challenges in classic microscopic vasoepididymostomy.

In Vitro Study on the Regulation of Annexin IV and VEGF by hCG in the Human Endometrium.

Objective: Whether changes in vascular endothelial growth factor (VEGF) and annexin IV during implantation are regulated through the LH/hCG-R needs further research. To investigate the mechanism of hCG on the expression of annexin IV and VEGF in human endometrial cells.

Methods: Endometrial cells were isolated and identified from human specimens.

Effects of Antiretroviral Therapy and HIV Exposure in Utero on Adverse Pregnancy and Infant Outcomes: A Prospective Cohort Study in Guangzhou, China.

Objective: This study aimed to evaluate the effects of in-utero exposure to HIV and ART on pregnancy outcome and early growth of children.

Methods: This cohort study enrolled 802 HIV-infected pregnant women between October 2009 and May 2018 in Guangzhou, China. The women were assigned to receive combination ART (cART) or mono/dual ART or no treatment.

[Influence of antiretroviral prophylaxis on growth of HIV-exposed uninfected infants].

To evaluate the influence of antiretroviral prophylaxis on the growth and development of HIV-exposed uninfected infants in Guangzhou. Data were from the national information system for prevention of mother-to-child transmission of HIV infection, syphilis and hepatitis B. After excluding death and perinatal HIV infection cases, 564 HIV-exposed uninfected infants were included.

Effects of M II stage oocytes zona pellucida birefringence on pregnancy outcome.

Objective: To explore the effects of different M II stage oocytes zona pellucida birefringence on pregnancy outcome.

Methods: A total of 46 couples with infertile which induced by single cause received in-vitro fertilization treatment were analyzed retrospectively, and randomly divided into the high zona birefringence (HZB)/HZB group, HZB/low zona birefringence (LZB) group and LZB/LZB group according to different oocytes zona pellucida birefringence. Intracytoplasmic sperm injection outcome was analyzed and compared.

Is premature ovarian ageing a cause of unexplained recurrent miscarriage?

Recurrent miscarriage is often unexplained. In our study, we test the hypothesis that unexplained recurrent miscarriage is associated with premature ovarian ageing by comparing the basal follicle-stimulating hormone (FSH) level between women with recurrent miscarriage and a control group of subjects in two different ethnic centres: one in Guangzhou, China and the other in Sheffield, UK. The subjects were stratified into three different age groups, and all of them were under the age of 40 years.