Impact of pelvic floor muscle training in pelvic organ prolapse

A comprehensive review of conservative therapies for female stress urinary incontinence: Advancements, efficacy, and future directions

Pelvic floor dysfunction poses a significant challenge to women worldwide. Female urinary incontinence is one of the most prevalent types of pelvic floor dysfunctions, affecting at least 50% of females, particularly those who are pregnant or menopausal. Among the various urinary incontinence subtypes, stress urinary incontinence takes the lead, characterized by involuntary urine leakage during activities that increase intra-abdominal pressure, such as sneezing, coughing, laughing, or exercising. This comprehensive review explores the latest advancements and critical insights into conservative treatments for stress urinary incontinence. Stress urinary incontinence symptoms result in profound physical and psychological consequences for individuals and impose a substantial medical and economic burden on society; however, only 5%-10% seek professional help. This narrative review meticulously examines a spectrum of interventions, ranging from lifestyle modifications to emerging modalities, such as laser treatment and electroacupuncture.

Unveiling the depths of pelvic organ prolapse: From risk factors to therapeutic methods (Review)

Pelvic organ prolapse (POP) is a condition where one or more pelvic organs (such as the uterus, bladder and rectum) descend from their normal anatomical positions into the vagina, primarily due to the weakening of the pelvic floor support structures. While not life-threatening, POP can substantially diminish the patient's quality of life and lead to serious social and psychological complications. Researchers have explored novel directions regarding the etiology, mechanism and treatment of POP. However, existing literature on the subject often lacks comprehensive and systematic overviews. To address this gap and enhance researchers' understanding of POP, the present study reviewed the risk factors and molecular mechanisms of POP [including matrix metalloproteinases (MMPs) and tissue inhibitors of MMPs, transforming growth factor β, advanced glycation end products (AGEs)/receptor for AGE, phosphoinositide 3-kinase/protein kinase B, fibulin, lysyl oxidase-like 1, homeobox A11, collagen α-1 (XVIII) chain, Wnt signaling pathways and estrogen receptor α], as well as therapeutic approaches, such as lifestyle interventions, physical methods, pharmacotherapy, stem cell transplantation and surgical techniques. The present review aims to provide new insights for future research and contribute to the advancement of diagnosis and treatment strategies for POP.

scRNA-seq reveals aging-related immune cell types and regulators in vaginal wall from elderly women with pelvic organ prolapse

Introduction

In the pathology of pelvic organ prolapse (POP), little is known about the contributing role of pelvic microenvironment. Also, the age-related differences in pelvic microenvironment of POP patients is always ignored. In the present study, we investigated the age-related differences in pelvic microenvironment between Young POP patients and Old POP patients, and the novel cell types and critical regulators which contributes to the age-related differences.

Methods

Single-cell transcriptomic analyses were used to detect the changes in cell composition and gene expression from the pelvic microenvironment of control group (<60 years), Young POP group (<60 years) and Old POP group (>60 years). Then, immunohistochemistry and immunofluorescence were used to verify the novel cell types and critical regulators in the pelvic microenvironment. Furthermore, histopathological alteration and mechanical property alteration in POP with different ages were revealed by vaginal tissue histology and biomechanical testing.

Results

The up-regulated biological process in Old women with POP is mainly related to chronic inflammation, while the up-regulated biological process in Young women with POP is mainly related to extracellular matrix metabolism. Meantime, CSF3+ endothelial cells and FOLR2+ macrophages were found to play a central role in inducing pelvic chronic inflammation. Furthermore, the collagen fiber and mechanical property of POP patients decreased with aging.

Conclusions

Taken together, this work provides a valuable resource for deciphering the aging-related immune cell types and the critical regulators in pelvic microenvironment. With better understanding of normal and abnormal events in this pelvic microenvironment, we provided rationales of personalized medicine for POP patients with different ages.

Exercise-induced circulating exosomes potentially prevent pelvic organ prolapse in clinical practice via inhibition of smooth muscle apoptosis

Background

This study aimed to explore the potential mechanisms of exercise to prevent pelvic organ prolapse (POP) and search for diagnostic indictors for POP.

Methods

We used two clinical POP datasets with patients' information (GSE12852 and GSE53868), a dataset consisting of altered microRNA expression in circulating blood after exercise (GSE69717) for bioinformatic analysis and clinical diagnostic analysis, while a series of cellular experiments were conducted for preliminary mechanical validation.

Results

Our results show that AXUD1 is highly expressed in the smooth muscle of the ovary and is a key pathogenic gene in POP, while miR-133b is a key molecule in the regulation of POP by exercise-induced serum exosomes. The AUCs of AXUD1 for POP diagnosis were 0.842 and 0.840 in GSE12852 and GSE53868 respectively. At cut-off value = 9.627, the sensitivity and specificity of AXUD1 for predicating POP is 1.000 and 0.833 respectively for GSE53868, while at cut-off value = 3324.640, the sensitivity and specificity of AXUD1 for predicating POP is 0.941 and 0.812 separately for GSE12852. Analysis and experiments confirmed that miR-133b can directly regulate AXUD1. miR-133b mediated C2C12 myoblasts proliferation and inhibited hydrogen peroxide-induced apoptosis.

Conclusions

Our study proved that AXUD1 is a good clinical diagnostic indicator for POP and provided a theoretical basis for future prevention of POP through exercise and a potential target for intervention in muscle dysfunction.

The effect of pelvic floor muscle training for women with pelvic organ prolapse: a meta-analysis

INTRODUCTION AND HYPOTHESIS

This study was aimed at evaluating the effect of pelvic floor muscle training (PFMT) as a conservative treatment for patients with pelvic organ prolapse (POP).

METHODS

A comprehensive search to identify eligible randomized controlled trial (RCT) studies was conducted using electronic databases including PubMed, Cochrane Central Register of Controlled Trials (CENTRAL), and Embase up to 10 June 2021. Results were presented as risk ratio (RR), the weighted mean difference (WMD), with 95% confidence interval (95% CI) using the random effects model. Outcome variables were pooled using Review Manager version 5.3.

RESULTS

Thirteen studies were included. Our results demonstrated that women who received PFMT intervention had a greater improvement than controls in prolapse symptom score (POP-SS; mean difference [MD] -1.66, 95% CI -2.36 to -0.97, p < 0.00001] and POP stages (risk ration [RR] 1.51, 95% CI 1.14-2.01, p = 0.004). The number of participants who felt better after PFMT was higher (RR 1.98, 95% CI 1.21-3.24, p = 0.006). Subgroup analysis showed that the symptoms of prolapse and the degree of prolapse were improved significantly in the short term, but there was no significant difference in the long-term effect. In addition, there was no significant difference in the impact of PFMT on the elderly and the quality of life. More RCTs are needed to evaluate the effect of PFMT on the elderly and whether the quality of life can be improved.

CONCLUSIONS

We found that PFMT can improve subjective symptoms and objective POP severity. More research is needed on the long-term effect.