An increasing body of evidence shows that miR-34 family has tumor suppressive properties mediating apoptosis, cell cycle arrest and senescence. In ovarian cancer, miR34 family members were found to be under expressed. Particularly miR-34a has been revealed to be a direct transcriptional target of p53 which is frequently mutated in epithelial ovarian carcinomas especially in high grade serous cancer. Moreover, methylation of miR-34a CpG Islands was found to down-regulate miR-34a expression. The aim of this study was to investigate the clinical relevance of mir34a as well as its promoter methylation in a subset of 133 ovarian cancers with a special focus on the p53 mutation status, the dualistic type I and type II ovarian cancer model and the different histotypes. One hundred thirty-three epithelial ovarian cancers and 8 samples of healthy ovarian surface epithelium were retrospectively analysed for miR-34a expression with quantitative real-time reverse transcription PCR (qRT-PCR). Gene-specific DNA methylation was evaluated with MethyLight technique. Significantly lower miR-34a expression was found in ovarian cancers than in healthy ovarian epithelium (p = 0.002). The expression of miR-34a was found lower in type II than in type I cancers (p = 0.037), in p53 mutated as compared to p53 wild type cancers (p = 0.003) and in high grade compared to in low grade cancers (p = 0.028). In multivariate COX regression model low expressing miR-34a cancers exhibited a reduced PFS (p = 0.039) and OS (p = 0.018). In serous cancers low miR-34a levels showed a worse OS confirmed also in multivariate analysis (p = 0.022). miR-34a promoter methylation was found higher in type II cancers than in type I (p = 0.006). mir34a expression and promoter methylation showed an inverse correlation in cancer samples (p = 0.05). We demonstrated a clinical independent role of miR-34a in epithelial ovarian cancers. Moreover, we corroborated the correlation between miR-34a expression and its promoter methylation in a large set of ovarian cancers. The inverse association between miR-34a expression and grading, p53 mutation status and dualistic tumor type classification, together with its prognostic relevance may underline the tumor-suppressive character of miR-34a in ovarian cancer.
12 June 2020 in Ultrasound in Obstetrics & Gynecology
Background: In high-risk patients with cervical incompetence, laparoscopic cerclage is a promising treatment option. However, the procedure exhibits relevant surgical risks. Aims: The purpose of this study was to evaluate a surgical “needle-free” technique for minimally invasive, laparoscopically placed cervico-isthmic cerclage in high-risk patients. Methods: This was a retrospective observational study over a 10-year period of pre- and postconceptional cerclage placement. The included patients either experienced previous transvaginal cerclage (TVC) failure or were not eligible for TVC. Laparoscopic transabdominal cerclage using a needle-less mersilene tape was performed via a broad ligament window lateral to the uterine vessels. Results: Laparoscopic transabdominal cerclage was successfully performed in all included women with a median operation time of 62 min. We did not observe any intra- or postoperative complications, particularly no bleeding complications. Nine of 11 women became pregnant and/or carried out a successful pregnancy, respectively. Importantly, we did not observe any cases of miscarriage or mid-trimester loss. Two patients did not conceive; however, their medical histories did include Asherman’s syndrome and advanced maternal age. Conclusion: Transabdominal laparoscopic “needle-free” cerclage is a safe and effective treatment option for a well-selected group of women at high risk of cervical incompetence. It provides good obstetric results without increasing perioperative morbidity.
1 February 2023 in International Journal of Gynecology & Obstetrics
ObjectiveTo create a reference curve for postvoid residual volume (PVRV) in asymptomatic postpartum women who are at low risk of developing postpartum urinary retention (PUR), a well-known complication in the immediate postpartum period. MethodsThis is a prospective observational study measuring PVRV after uncomplicated vaginal delivery. PVRV was assessed by transabdominal ultrasound using a portable ultrasound scanner within the first 26 h after delivery (PVRV 1) and on the day of discharge (day 2 or 3 postpartum) (PVRV 2). A PVRV of 150 mL or more was defined as the cut-off value for covert PUR. ResultsThe prevalence of covert PUR was 7.1%. Primiparity, duration of second stage, and obstetric injury were correlated with higher PVRV 1. The median PVRV 1 was 21 mL and PVRV 2 was 11 mL. The subgroup of nulliparous women had a significantly higher PVRV 1 compared with multiparous women. At discharge, the majority (99.1%) of women had a PVRV of less than 150 mL. ConclusionAsymptomatic women were at low risk of developing PUR. However, women with a prolonged second stage may benefit from a routine postpartum assessment. Our results allow for a better understanding of PVRV in the early postpartum period.