Publications by authors named "Yunwei Ouyang"

Article Synopsis
  • The study aimed to determine how molecular classification impacts the success of fertility-sparing treatments (FST) in early-stage endometrial cancer (EC) and how this information might optimize patient management.
  • A total of 116 patients with molecularly classified EC were analyzed, showing comparable complete response (CR) rates across different subtypes, though treatment times varied, with POLE EDM patients responding the quickest.
  • The findings suggest that POLE EDM patients may have the best outcomes with FST, while patients with MMR-D require careful monitoring due to the longer time needed for treatment. More research is necessary due to limited sample sizes in some subtypes.
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Article Synopsis
  • This study looked at women who had trouble getting pregnant because of certain problems inside their uterus called intrauterine adhesions (IUA).
  • The researchers treated these women using a special surgery and then checked how many were able to have babies afterward.
  • They found that over half of the women got pregnant after the surgery, and those who had better periods afterward were more likely to give birth successfully.
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Objective: To investigate the impact of endometriosis on the therapeutic effect of hysteroscopic fallopian tube catheterization combined with laparoscopy in infertile patients with proximal tubal obstruction.

Methods: We conducted a retrospective analysis of patients who underwent hysteroscopic fallopian tube catheterization combined with laparoscopy for infertility caused by proximal fallopian tube obstruction between January 19, 2016 and March 20, 2020 at the Department of Reproductive Endocrinology, West China Second Hospital, Sichuan University. During the operation, hydrotubation was performed to verify whether there was proximal tubal obstruction.

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Endometriosis is a hormone-dependent disease associated with impaired immunoregulation. In our recent study, we have characterized the trascriptomic transformation of eutopic endometrium from patients with minimal/mild endometriosis and controls across the menstrual cycle. However, the regulatory mechanism of altered immune microenvironment in eutopic endometrial stromal cells (ESCs) remains unclear.

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Endometriosis is a common inflammatory disorder in women of reproductive age due to an abnormal endometrial immune environment and is associated with infertility. This study aimed to systematically understand the endometrial leukocyte types, inflammatory environment, and impaired receptivity at single-cell resolution. We profiled single-cell RNA transcriptomes of 138 057 endometrial cells from endometriosis patients (n = 6) and control (n = 7), respectively, using 10x Genomics platform.

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Aim: Progesterone resistance is an epigenetic factor that reduces endometrial receptivity and causes implantation failure in women with endometriosis. In addition, dysregulated miRNAs contribute to the underlying pathogenic mechanisms of endometriosis. This study aimed to determine the effect of miR-297 on the progesterone receptor (PR) expression and on insufficient decidualization of endometrial stromal cells (ESCs) within the eutopic endometria of infertile women with minimal or mild endometriosis.

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Objective: Septate uterus is the most common structural uterine anomaly, which is related to the adverse pregnancy outcomes in women of childbearing age. This article provides a retrospective review of hysteroscopic uterine septum resection performed in our hospital during recent years, focusing on the patients with recurrent miscarriage and primary infertility, and also to identify which patients are more likely to benefit from the surgery.

Methods: This is a single-center retrospective study.

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We first reported that the Hippo-YAP signaling pathway plays a critical role in the pathogenesis of endometriosis (EMS). Autophagy is also related to the invasion ability of endometrial cells and is involved in the pathogenesis of EMS through multi-levels. However, the precise regulatory mechanism of YAP on autophagy in the eutopic endometrial stromal cells (ESCs) is still unclear.

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The prevalence of endometriosis is approximately 10% in women of reproductive age, and 30-50% of women with endometriosis are infertile. Metformin has been reported to inhibit the growth of ectopic lesions in endometriosis. However, its effect on the eutopic endometrium of endometriosis is unknown.

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Objective: To provide more information about tumor prevalence and malignant transformation among patients with disorders of sex development (DSD) for further guidance in prophylactic gonadectomies and surveillance.

Methods: SPSS software (version 20.0) was used for all statistical analyses.

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Objective: To evaluate the effectiveness of laparoscopic tubal anastomosis for tubal occlusions associated with infertility in patients with previous laparoscopic salpingostomy for ectopic pregnancy.

Methods: This study is a retrospective analysis of the pregnancy outcomes of 173 infertile patients who underwent hysteroscopy and laparoscopic tubal anastomosis treatment between January 2013 and August 2018 in the Department of Reproductive Endocrinology in West China Second University Hospital of Sichuan University. All patients had a history of laparoscopic salpingostomy for tubal pregnancy.

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Rationale: In this article, we report interesting clinical manifestation of spontaneous bilateral fallopian tube pregnancies in a patient with a didelphic uterus.

Patient Concerns: A 26-year-old female patient, gravida 2, para 0 + 1, suffered from progressive abdominal pain and vaginal bleeding. A laboratory exam revealed a human chorionic gonadotropin level of 1091 IU/L.

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Rationale: Intravenous leiomyomatosis (IVL) is a rare and special type of smooth muscle tumor originating in the uterus. It is classified as a benign disease according to its histological features but shows the behavioral characteristics of a malignant tumor. It is easily misdiagnosed and recurrent.

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MicroRNAs (miRNAs) may function as oncogenes or tumor suppressors. Here, we identified that miR-590-5p was up-regulated in human cervical cancer. Over-expression of miR-590-5p promoted cervical cancer cell growth, cell cycle and invasion via Growth curve, Colony formation, FACS and Transwell assays in HeLa and C33A cell lines.

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Objective: To investigate the timing of pregnancy and pregnancy termination and its management in women with pregnancy complicating systemic lupus erythematosus (SLE).

Methods: A series of 86 cases of pregnancy complicating SLE treated in our hospital from January 2005 to June 2010 were retrospectively reviewed, including 54 cases of planned pregnancy and 32 cases of unplanned pregnancy. The pregnancy courses and clinical outcomes were analyzed.

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Objective: To explore the effect of metastasis suppressor gene KAI1 on the proliferation and invasive ability of cervical cancer cell line CaSki.

Methods: pCMV-KAI1 cDNA plasmid was transferred into cervical carcinoma cell line CaSki by liposome, which had low level of endogenous KAI1 expression. The expressions of KAI1 protein and mRNA were determined by immunohistochemistry and real-time fluorescence quantitative PCR (RT-PCR), the proliferation of KAI1-transfected CaSki cells was investigated by MTT assay and the invasive ability of these cells was evaluated by in vitro invasion assays.

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Objective: To investigate the expression of metastasis suppressor gene KAI1 in cervical carcinoma and the impact of human papillomavirus 16 E6, E7, 18 E6/E7 infection on the expression of KAI1.

Methods: The expressions of KAI1 protein in the formalin-fixed, paraffin-embedded specimens of 20 normal cervical epthelium, 15 cervical in situ carcinoma and 70 primary invasive cervical carcinoma were detected by immunohistochemistry SP. Polymerase chain reaction (PCR) tests were also undertaken to detect the HPV16 E6, E7 and HPV18 E6/E7 DNA.

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Objective: To isolate human hemoglobin and its fragrments, compare their antimicrobial activity in vitro and pilot study of their antimicrobial activity in vivo.

Methods: The alpha and beta chains of hemoglobin were separated by cation exchange chromatography and gel chromatography; The alpha and beta chains were cleaved by cyanogens bromide respectively. The cleaved fragments were purified by reverse phase high performance liquid chromatography.

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Objective: To investigate the expression and correlation of C-met and Estrogen receptor (ER) in endometrial carcinomas.

Methods: We examined 55 samples of endometrial carcinomas using specific polyclonal endometrial carcinomas.

Methods: antibody and monoclonal antibody correspondent to the human C-met and ER respectively.

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Objective: To detect the expressions of matrix metalloproteinase-2 (MMP-2) and matrix metalloproteinase-9 (MMP-9) in cervical cancer and their correlation with clinicopathologic features.

Methods: With the use of specific monoclonal antibody to human MMP-2 and MMP-9, the formalin-fixed and paraffin-embedded specimens of 62 invasive carcinomas of cervix uteri, 5 carcinomas in situ, 10 normal cervical epithelia and 10 lymph node metastases were detected by immunohistochemical method.

Results: MMP-2 and MMP-9 protein expressions in tumor and peritumoral stromal cells were enhanced in invasive carcinoma, compared to those in carcinoma in situ and controls (P < 0.

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