Lei Yan

Intrauterine adhesion (IUA) refers to injury to the basal layer of the endometrium, which can be caused by various factors. It is often accompanied by clinical symptoms such as abnormal menstruation, infertility, recurrent abortion, and per…

Abstract Background: Endometriosis is a chronic disease associated with disorder of the oxidative balance and chronic inflammation. Although endometriosis is a benign disease, it has the characteristics properties similar to malignant canc…

Gonadotropin-releasing hormone agonist (GnRH-a) is generally added to the improve pregnancy outcomes of hormone replacement therapy cycles among patients with adenomyosis. We aimed to investigate whether adding GnRH-a can result in better p…

Abstract Gonadotropin-releasing hormone agonist(GnRH-a) is generally added to improve pregnancy outcomes of adenomyosis based hormone replacement therapy cycle. Our objective in this study is to investigate whether adding GnRH-a can obtain …

PURPOSE: To evaluate the effect of ovarian endometrioma aspiration on IVF/ICSI outcomes. METHODS: The PubMed, EMBASE, Web of Science, China National Knowledge Infrastructure, and Wanfang databases were searched to identify studies related …

Background: Reproductive outcomes after fresh in vitro fertilization/intracytoplasmic sperm injection-embryo transfer (IVF/ICSI-ET) cycles are diverse in infertile women with a history of ovarian cystectomy for endometriomas. We aimed to de…

Abstract Background : Recent studies have confirmed that endometriosis is a chronic inflammatory disease. In our previous work, we found that STING (stimulator of interferon genes) was differentially expressed in eutopic endometrium and con…

Background: The association between endometriosis and embryological outcomes remains uncertain. The meta-analysis aimed to evaluate the impact of endometriosis on embryo quality. Methods: A systematic review and meta-analysis was conducted …

AIM: Endometriosis is associated with infertility. The aim of this study was to examine the overall proteomic changes of eutopic endometrium in infertile women with endometriosis. METHODS: Tandem mass tags combined with multidimensional li…

Purpose: The aim of this study was to investigate the effect of human chorionic gonadotropin (hCG) in hormone replacement (HT) regime for frozen thawed embryo transfer in women with endometriosis (EM). Methods: We performed a retrospective,…

Abstract Purpose To investigate the effect of hCG in hormone replacement regime for frozen thawed embryo transfer in women with endometriosis. Methods We performed a retrospective, database-searched cohort study. The data of endometriosis p…

Fibrotic tissue may contribute to the origin of some endometriosis-related symptoms, such as chronic pelvic pain and infertility. Alterations in the H19/miR-216a-5p/ACTA2 pathway may mediate the regulation of eutopic endometrial stromal cel…

AIM: To study whether infertile patients with endometriosis have a higher prevalence of endometrial polyps, and to clarify the characteristics of the pathology of combined polyps. METHODS: Infertile patients who had undergone both hysteros…

BACKGROUND: Melatonin is a potential therapeutic agent for endometriosis, but its molecular mechanism is unclear. Here, we investigated the effect of melatonin on the epithelial-mesenchymal transition (EMT) in endometriotic endometrial epit…

BACKGROUND: Umbilical lesions are rare, and can be benign or malignant. This retrospective study was conducted to assess the epidemiological, clinical, and histologic characteristics of umbilical masses. METHODS: Cases of umbilical masses …

OBJECTIVE: To evaluate the effects of different treatment methods for previous ectopic pregnancies (EP) on cryopreserved embryo transfer (CET) outcomes. MATERIALS AND METHODS: This was a retrospective cohort study. Patients with EP histori…

To investigate the impact of an ovarian dermoid cyst or dermoid cyst surgery on ovarian reserve in patients undergoing in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI). We performed a retrospective cohort study by using th…

Polymorphisms in the Xba I and Pvu II restriction enzyme recognition sites in the estrogen receptor-alpha gene (ESR1) have been associated with multiple diseases, including osteoarthritis. To determine whether such polymorphisms are associa…

AIMS: To study the effect of adenomyosis on in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) outcomes in infertile patients. METHODS: We performed a retrospective, database-searched cohort study based on 10,268 patients u…

The aim of this study was to investigate the role of microRNA-21 (miR-21) in the regulation of phosphatase and tensin homolog deleted from chromosome-10 (PTEN) expression and proliferation of endometrioid endometrial cancer (EEC) cells. We …