Transcriptomic Analysis Reveals Intrinsic Abnormalities in Endometrial Polyps.

Endometrial polyps (EPs) are benign overgrowths of the endometrial tissue lining the uterus, often causing abnormal bleeding or infertility. This study analyzed gene expression differences between EPs and adjacent endometrial tissue to elucidate intrinsic abnormalities promoting pathological overgrowth. RNA sequencing of 12 pairs of EPs and the surrounding endometrial tissue from infertile women revealed 322 differentially expressed genes. Protein-protein interaction network analysis revealed significant alterations in specific signaling pathways, notably Wnt signaling and vascular smooth muscle regulation, suggesting these pathways play critical roles in the pathophysiology of EPs. Wnt-related genes DKK1 and DKKL1 were upregulated, while GPC3, GREM1, RSPO3, SFRP5, and WNT10B were downregulated. Relevant genes for vascular smooth muscle contraction were nearly all downregulated in EPs, including ACTA2, ACTG2, KCNMB1, KCNMB2, MYL9, PPP1R12B, and TAGLN. Overall, the results indicate fundamental gene expression changes promote EP formation through unrestrained growth signaling and vascular defects. The intrinsic signaling abnormalities likely contribute to clinical symptoms of abnormal uterine bleeding and infertility common in EP patients. This analysis provides molecular insights into abnormal endometrial overgrowth to guide improved diagnostic and therapeutic approaches for this troublesome women's health condition. Confirmation of expanded cohorts and further investigations into implicated regulatory relationships are warranted.

Intrauterine adhesion prevention with Malecot catheter after hysteroscopic myomectomy: A novel approach.

OBJECTIVE: Intrauterine adhesion after hysteroscopic myomectomy contributes to infertility, recurrent miscarriages, menstrual irregularities, and hinders pregnancy outcomes. The aim of this study was to apply the indwelling Malecot catheter in prevention of intrauterine adhesion after hysteroscopic myomectomy and to further evaluate the effectiveness of this approach with reported live birth rates in infertile patients who underwent subsequent infertility treatment. MATERIALS AND METHODS: Seventeen patients with FIGO Classification System PALM-COIEN Type 0 or 1 submucous myoma that received hysteroscopic myomectomy were recruited in this retrospective analysis. Post-operative insertion of the Malecot catheter via the aid of the uterine sound was performed and the catheter was left in place for seven days. RESULTS: The mean duration of TTP (time to pregnancy) was 15.6 months after hysteroscopy. Within three years after the operation, 10 out of 17 infertility patients achieved ongoing pregnancy over 12 weeks. Ongoing pregnancy rate was 58.8% (10/17). Eight patients achieved live birth (seven singletons, one twin pregnancy) with mean gestational age of 38 weeks. Live birth rate was 47.1% (8/17). CONCLUSION: The Malecot catheter is an inexpensive, easy-to-operate, and effective physical barrier method for preventing IUA in infertile patients undergoing hysteroscopic myomectomy with high live birth rate and no obvious visible post-operative adhesions.