Zhengyi Sun

ORCID: 0000-0001-6363-9723 · 11 papers in corpus
observational 2025
When to Choose In Vitro Fertilization (IVF) When Postponing Conceiving: The Age-Related Risk of IVF Failure at an Advanced Age
Obstetrics and Gynecology International ·doi:10.1155/ogi/2407539

BACKGROUND: To validate previous age subgrouping methods and provide an optimal age reference for women planning to delay in vitro fertilization (IVF). METHODS: From July 2014 to March 2018, 3012 patients that received IVF/intracytoplasmic…

observational 2024
Effect of post-vitrification cryopreservation duration on singleton birth-weight in frozen-thawed blastocysts transfer cycles
Frontiers in endocrinology ·doi:10.3389/fendo.2024.1366360

INTRODUCTION: This study aimed to explore the effect of cryopreservation duration after blastocyst vitrification on the singleton birth-weight of newborns to assess the safety of long-term preservation of frozen-thawed blastocyst transfer (…

observational 2023
Impact of endometriosis on embryo quality and endometrial receptivity in women undergoing assisted reproductive technology
Reproductive biology ·doi:10.1016/j.repbio.2023.100733

ART is an important treatment method for infertile patients with endometriosis. However, the effects of endometriosis on embryo quality and endometrial receptivity remain unclear. Thus, we aimed to simultaneously investigate the impact of e…

other 2022
Predicting cumulative live birth rate for patients undergoing in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI) for tubal and male infertility: a machine learning approach using XGBoost
Chinese medical journal ·doi:10.1097/cm9.0000000000001874
observational 2021
A Proper Increasing in the Testosterone Level May Be Associated With Better Pregnancy Outcomes for Patients With Tubal or Male Infertility During in vitro Fertilization/Intracytoplasmic Sperm Injection
Frontiers in physiology ·doi:10.3389/fphys.2021.696854

We aimed to investigate the relationship between testosterone (T) levels and pregnancy outcomes in patients with tubal or male infertility at different times during in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI) cycles…

observational 2021
Smooth Endoplasmic Reticulum Clusters in Oocytes From Patients Who Received Intracytoplasmic Sperm Injections Negatively Affect Blastocyst Quality and Speed of Blastocyst Development
Frontiers in physiology ·doi:10.3389/fphys.2021.732547

Findings regarding the relationship between smooth endoplasmic reticulum clusters (SERCs) in oocytes and blastocyst development have been conflicting. In this study, the effects of SERCs on blastocyst quality and the speed of blastocyst dev…

observational 2020
Mildly Higher Serum Prolactin Levels Are Directly Proportional to Cumulative Pregnancy Outcomes in in-vitro Fertilization/Intracytoplasmic Sperm Injection Cycles
Frontiers in endocrinology ·doi:10.3389/fendo.2020.00584

Hyperprolactinemia has long been considered detrimental to fertility due to irregularity of ovulation. Whether mild hyperprolactinemia should be corrected before initiating an in-vitro fertilization/intracytoplasmic sperm injection cycle (I…

observational 2020
Uterus Size May Affect Reproductive Outcome in Women with Adenomyosis After Gnrh- Agonist Pretreatment Undergoing Frozen Embryo Transfer Cycles: A Retrospective Cohort Study
·doi:10.21203/rs.3.rs-122461/v1

Abstract Background: GnRH-agonist is used to treat adenomyosis, but its efficacy in adenomyosis patients with uterine enlargement undergoing frozen embryo transfer (FET) is unclear. Methods： The retrospective cohort study comprised 112 aden…

observational 2011
Brain-derived neurotrophic factor from follicular fluid is positively associated with rate of mature ooocytes collected and cleavage rate in intracytoplasmic sperm injection patients
Journal of assisted reproduction and genetics ·doi:10.1007/s10815-011-9635-4

PURPOSE: The aim of the study was to evaluate the correlation between BDNF and oocyte maturation and to verify whether BDNF could predict in vitro fertilization (IVF) outcome. METHODS: The follicle fluid (FF) for BDNF, E(2) and P assay wer…

observational 2009
Analysis of Pregnancy Rate with Expectant Management and Controlled Ovary Hyperstimulation Treatment in Endometriosis-associated Infertility Patients after Laparoscopic Treatment

Objective:To compare pregnancy rate with expectant management or controlled ovary hyperstimulation(COH) treatment in endometriosis-associated infertility patients after laparoscopic treatment.Methods: Patients were divided into two groups,e…

case-report 2002
Intraspinal endometriosis: a case report
Chinese medical journal