Juanzi Shi

Precise regulation of alternative splicing (AS) of maternal mRNAs is crucial for maintaining mRNA homeostasis and for acquiring oocyte competence. However, the regulatory factors and mechanisms of AS regulating oocyte competence and human f…

Oocyte/embryo defects can result in oocyte maturation arrest, fertilization failure, embryonic arrest, and infertility as well as recurrent in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) failures. However, the genet…

BACKGROUND: To investigate whether cured tuberculosis affect assisted reproductive outcomes in infertile women. METHODS: A retrospective cohort study was conducted to compare assisted reproductive outcomes between cured tuberculosis and no…

OBJECTIVE: Limited evidence exists on the safety of inactivated COVID-19 vaccines and the optimal vaccination timing for women undergoing in vitro fertilization-frozen embryo transfer (IVF-FET). This study aims to examine the associations b…

BACKGROUND: Total fertilization failure (TFF) or near TFF may lead to cycle cancellation, which is a highly frustrating experience for patients, especially those who have undergone multiple attempts. Early rescue intracytoplasmic sperm inje…

BACKGROUND: Few studies have analyzed the endometrial preparation protocols for frozen-thawed embryo transfer (FET) in patients at high risk of ovarian hyperstimulation syndrome (OHSS). This study aimed to investigate the optimal protocol f…

BACKGROUND: Different endometrial preparation protocols are used prior to frozen-thawed embryo transfer (FET). Optimization of endometrial preparation protocols is mandatory to improve live birth rate and obstetric and perinatal outcomes. I…

RESEARCH QUESTION: Does preimplantation genetic testing for aneuploidy (PGT-A) on cryopreserved unbiopsied blastocysts improve pregnancy outcomes for women with previous IVF-related pregnancy loss? METHODS: This retrospective observational…

BACKGROUND: With the increasing incidence of obesity and the childbearing-age delay among women, a debate over obesity's impacts on pregnancy and neonatal outcomes becomes hot. The potential negative effects of obesity and aging on fertilit…

OBJECTIVE: This study aimed to evaluate the impact of adding 4 mg estradiol valerate to progesterone for luteal support on pregnancy rates in IVF cycles following a long protocol with reduced luteal serum estradiol levels post-hCG triggerin…

PURPOSE: To evaluate the embryological and pregnancy outcomes of women who failed in their first IVF treatment if they attempted a second cycle. METHODS: For evaluating the embryological outcomes, the study cohort included 1,227 women who …

The incidence of multiple pronuclei (≥ 3PN) zygotes and blastomere multinucleation was found to be elevated in the presence of increased estradiol (E2) levels and a greater number of retrieved oocytes. This implies a potential link between …

BACKGROUND: Uterine contractions may interfere with embryo implantation in assisted reproductive technology. To reduce these contractions and improve success rates, the oxytocin antagonist atosiban has been suggested for administration duri…

BACKGROUND: Late follicular phase progesterone elevation (LFPE) during ovarian stimulation is associated with reduced live birth rates (LBRs) after cleavage-stage embryo transfer. However, due to better synchronization with a stimulated end…

RESEARCH QUESTION: Does glycan profile in spent blastocyst culture medium have the potential to be used as a biomarker to predict implantation outcome. DESIGN: A nested case-control study was conducted in Northwest women's and children's H…

INTRODUCTION: In frozen-thawed embryo transfer (FET) cycles, hormone replacement treatment (HRT) was associated with a higher risk of hypertensive disorders of pregnancy (HDP) compared with natural cycles (NC). Multiple pregnancy was a risk…

BACKGROUND: Human chorionic gonadotropin (hCG) as one of the first signals secreted by the embryo to the mother may have a direct effect on the endometrium at implantation. The current study was aim to compare the clinical outcomes after fr…

BACKGROUND: Hydrosalpinx may decrease implantation and pregnancy rates after embryo transfer. Laparoscopic tubal ligation after embryo freeze and before frozen-thawed embryo transfer (FET) is effective at improving reproductive outcomes for…

IMPORTANCE: There is a lack of information regarding the need to postpone conception after COVID-19 vaccination. OBJECTIVE: To investigate the time interval between the first dose of inactivated COVID-19 vaccine and in vitro fertilization …

BACKGROUND: Plenty of studies explored the most optimal treatment protocol for infertile women with adenomyosis in in-vitro fertilization (IVF) /intracytoplasmic sperm injection (ICSI), however, there is still no consensus on which treatmen…

BACKGROUND: Intracytoplasmic sperm injection (ICSI) is increasingly used among in vitro fertilization (IVF) cycles without male factor infertility. For couples with prolonged infertility duration, the preferred insemination method may vary …

BACKGROUND: Intrauterine insemination (IUI) treatment is recommended in subfertile women with AFS/ASRM stage I/II endometriosis. However, the efficacy of IUI in women with ovarian endometriomas with tubal patency is uncertain. We explored t…

BACKGROUND: To determine whether gonadotropin-releasing hormone (GnRH) agonist downregulation combined with hormone replacement therapy (HRT) can improve the reproductive outcomes in frozen-thawed embryo transfer cycles for older patients (…

BACKGROUND: A number of studies have compared the clinical outcomes between the two endometrial preparation methods: natural cycles (NCs) and hormone replacement treatment (HRT) before frozen embryo transfer, but the results were conflictin…

OBJECTIVE: Predictive models of the cumulative live birth (CLB) in women undergoing in vitro fertilization (IVF) treatment are limited. The aim of this study was to develop and validate a nomogram for the CLB in women undergoing the first I…