Critical analysis of methods for assessing genitourinary syndrome of menopause used in clinical trials

Clinical and laboratory results in vaginal wall restoration using a fractional-pixel-CO2 laser: histological findings and changes in the Ki67 protein and telomere length

Thermal deposition of laser energy in the vaginal epithelium in genitourinary syndrome of menopause (GSM) results in clinical and biological effects, but many cellular and molecular changes indicating cell proliferation or senescence inhibition are unknown. The aim of this study is to evaluate the clinical efficacy of the fractional-pixel-CO2 laser in the possible improvement of GMS signs and symptoms that can be correlated with histological changes or with cellular or molecular indicators of restoration. A detailed prospective study was designed to assess 17 women diagnosed with GSM who were treated intravaginally with two laser sessions. Seven non-treated women diagnosed with GSM were used as controls. Three validated outcome questionnaires for assessment of quality of sexual life and urinary incontinence were performed. Vaginal biopsies were collected before the first laser treatment and 4 months following the second session. Histological status, elastin, collagen, and hyaluronic acid content of the biopsies were also evaluated. Cell proliferation was assessed by Ki67 staining. Telomere length (TL) was measured by qPCR. The results show an improvement of the clinical symptoms of GSM (p < 0.05), vaginal epithelium recovery and enhancement of collagen (p < 0.05), elastic fibers (p < 0.005), and hyaluronic acid (p < 0.0005) content in the lamina propria after fractional-pixel-CO2 laser treatment. The laser treatment induced a significant rise on the TL of vaginal epithelial cells (VECs), and a positive correlation was found between the improvements of the collagen and hyaluronic acid content and TL changes (r = 0.82, p < 0.05; r = 0.38, p < 0.05). The percentage of proliferative Ki67-positive VECs was increased in patients whose vaginal TL lengthened after laser treatment (p < 0.05). In conclusion, the results indicate that laser treatment may induce restoration of the vaginal epithelium which is associated to increased TL and proliferation in the VECs. Performing a TL assay could be a suitable tool to evaluate the efficacy of vaginal laser treatment.

Methods of assessment of urogenital atrophy and the implication of these in estimated prevalence rates: A review of the literature

BACKGROUND

Urogenital atrophy is caused by lack of estrogen, most commonly due to the menopause. Symptoms frequently experienced include vaginal dryness, itching, burning, sexual difficulties and urinary problems, all of which can have a significant adverse effect on quality of life. Effective treatments are available for women with a confirmed diagnosis. The aim of this review is to determine whether a consistent diagnostic intervention exists, to support an accurate indication of prevalence.

MATERIALS AND METHODS

This study is a review of the literature.

RESULTS

A total of 1469 papers were identified on an initial search, including randomised controlled trials, cross sectional and cohort studies. By adoption of a systematic process, the number of papers in the final review was eight.There is inconsistent use of available assessment methods to diagnose urogenital atrophy in symptomatic women. There are no validated clinical assessment tools.

CONCLUSION

Absence of a defined intervention with which to confirm a diagnosis of urogenital atrophy, based on symptoms, influences research outcomes, but more importantly affects access to an accurate diagnosis and treatment, for affected women. This would ideally take place in a primary care setting.

A study of the objective benefits and safety of Er-YAG laser in the treatment of genitourinary syndrome of menopause

The aim of this study is to evaluate changes in vaginal pH and epithelium maturation after erbium-doped yttrium aluminum garnet (Er-YAG) laser treatment, and to assess its safety and efficacy on the symptoms of genitourinary syndrome of menopause (GSM). This was a retrospective study conducted between November 2019 and April 2022 and included 32 women diagnosed with GSM who had not benefitted from lubrication treatment and could not or would not use estrogen. Patients received three sessions of Er- YAG laser. All patient data before and after treatment were obtained from computer records. Vaginal maturation index (VMI), maturation value (MV) and vaginal pH values of the patients before and after laser treatment were compared. We also evaluated post-procedural complications and symptoms. Mean age was 59.72 ± 5.66 years. After laser therapy, there was a significant decrease in vaginal pH (p < 0.001) and the proportion of parabasal cells in VMI (p < 0.001), while there was a significant increase in MV (p < 0.001) and the proportion of superficial cells in VMI (p < 0.001). In 84.4% of the patients, GSM-related symptoms regressed completely or decreased to a tolerable level. Patients in which symptoms disappeared completely had significantly lower mean age (p = 0.002) and duration of menopause (p = 0.009). The laser procedure resulted in complications including mucosal injury in 5 (15.6%) patients (all recovered spontaneously) and vaginal burning sensation in 2 (6.3%) patients. Vaginal Er-YAG laser treatment may be a safe and effective alternative treatment method in a population of women with GSM who do not want to or cannot use estrogen therapy.

Ultrasonographic measurement of vaginal thickness: Relation to menopausal status and genitourinary syndrome of menopause

OBJECTIVE

To compare the total vaginal wall thickness (TVT) and total mucosal thickness (TMT) measurements of premenopausal and postmenopausal women measured by ultrasonography and to determine the association of these measurements to findings and symptoms of genitourinary syndrome of menopause METHODS: Healthy volunteers, 80 postmenopausal and 80 premenopausal, were included. Ultrasonographic TVT and TMT measurements, vaginal health index (VHI) scores and pH values were recorded. The daily impact of vaginal aging (DIVA) scale was administered to women in the postmenopausal group.

RESULTS

TVT measurements of the postmenopausal group (6.55 ± 2.00 mm) were lower than the premenopausal group (10.37 ± 2.11 mm) (p: 0.000). TMT measurements of the postmenopausal group (1.46 ± 0.50 mm) were lower than the premenopausal group (2.19 ± 0.60 mm) (p: 0.000). The VHI scores of the postmenopausal group were significantly lower than the premenopausal group, the pH value was higher (p < 0.05). Considering all women TVT and TMT measurements were inversely correlated with pH values and positively correlated with total VHI scores. There was no significant correlation between any component scores of the DIVA scale and TVT, TMT, pH, and VHI total (p > 0.05).

CONCLUSIONS

TVT and TMT measurements in postmenopausal women are significantly lower than premenopausal women. Examination findings and thickness measurements are correlated. Transabdominal ultrasonography is a method that can be used in the evaluation of vaginal thickness which is not painful for the patient, is easy to apply and gives results consistent with the examination findings. However, measurements and examination findings do not correlate with the DIVA scores in postmenopausal women.

Impact of Topical Interventions on the Vaginal Microbiota and Metabolome in Postmenopausal Women: A Secondary Analysis of a Randomized Clinical Trial

IMPORTANCE

Postmenopausal women with genitourinary symptoms of menopause are often prescribed vaginal estradiol or moisturizer for symptom improvement, but the impact of these treatments on the local microenvironment is poorly understood.

OBJECTIVE

To compare changes in the vaginal microbiota, metabolome, and pH among women using low-dose vaginal estradiol tablet or low pH moisturizer gel for 12-weeks vs low pH placebo.

DESIGN, SETTING, AND PARTICIPANTS

This is a post hoc prespecified secondary analysis of a 12-week multicenter randomized clinical trial among postmenopausal women with moderate to severe genitourinary symptoms. Women were enrolled between April 2016 and February 2017; final follow-up visits occurred in April 2017. Data were analyzed from November 2018 to July 2021.

INTERVENTIONS

Ten-μg vaginal estradiol plus placebo gel vs placebo tablet plus vaginal moisturizer vs dual placebo.

MAIN OUTCOMES AND MEASURES

The main outcome measures were changes in the diversity and composition of the vaginal microbiota, changes in the metabolome, and pH.

RESULTS

Of 302 postmenopausal women from the parent trial, 144 women (mean [SD] age, 61 [4] years) were included in this analysis. After 12 weeks, the microbiota was dominated with Lactobacillus and Bifidobacterium communities among 36 women (80%) in the estradiol group, compared with 16 women (36%) using moisturizer and 13 women (26%) using placebo (P < .001). The composition of vaginal fluid metabolites also varied after 12-weeks among women in the estradiol group with significant changes in 90 of 171 metabolites measured (53%) (P < .001), including an increase in lactate. The 12-week pH among women in the estradiol group was lower vs placebo (median [IQR] pH, 5 [4.5-6.0] vs 6 [5.5-7.0]; P = .005) but not the moisturizer group vs placebo (median [IQR] pH, 6 [5.5-6.5]; P = .28). There was a decrease in pH from baseline to 12-weeks within the moisturizer (median [IQR] pH, 7 [6.0-7.5] vs 6 [5.5-6.5]; P < .001) and placebo (median [IQR] pH, 7 [7.0-7.5] vs 6 [5.5-7.0]; P < .001) groups. Women with high-diversity bacterial communities at baseline exhibited greater median change in pH compared with women with low-diversity communities (median [IQR] change, -1 [-2 to -0.5] vs -0.3 [-1.1 to 0], P = .007).

CONCLUSIONS AND RELEVANCE

This secondary analysis of a randomized clinical trial found that use of vaginal estradiol tablets resulted in substantial changes in the vaginal microbiota and metabolome with a lowering in pH, particularly in women with high-diversity bacterial communities at baseline. Low pH moisturizer or placebo did not significantly impact the vaginal microbiota or metabolome despite lowering the vaginal pH. Estradiol use may offer additional genitourinary health benefits to postmenopausal women.

TRIAL REGISTRATION

ClinicalTrials.gov Identifier: NCT02516202.

Urogenital atrophy: The 'unknown factors' challenging current practice

Urogenital atrophy occurs as a result of the effect of estrogen deficiency on the tissue quality in the vulva, vagina, urethra and bladder. It is a common consequence of the menopause, with possibly up to 80% of women experiencing symptoms. Despite a number of different diagnostic methods, there is no validated objective method by which to confirm the diagnosis in clinical practice and research settings. Education, for women and clinicians, is called for to support diagnosis and treatment. However, before this can be of global benefit, development of an accessible and reproducible diagnostic test is required. Current assessment methods include routine history and clinical examination, with the clinician's opinion based on their subjective observations. A vaginal smear to assess the ratio of superficial to parabasal cells and measurement of the pH of the vaginal secretions is more commonly used in research settings. A number of formulae have been postulated to facilitate the diagnosis including the Vaginal Health Index, the Vulval Health Index, the Genitourinary Syndrome of the Menopause assessment tool, the Genital Health Clinical Evaluation and vaginal biopsy and assessment of the vaginal microbiome. However, none of these potential methods of assessment has been validated. This article focuses on what we do not know about urogenital atrophy including the prevalence, the most appropriate terminology, aetiology, pathogenesis and the most objective and reproducible method of assessment.

Variation in outcome reporting and measurement tools in clinical trials of treatments for genitourinary symptoms in peri- and postmenopausal women: a systematic review

IMPORTANCE

Genitourinary symptoms affect 40% to 60% of postmenopausal women. Evidence-based approaches to diagnosing and managing these symptoms are limited by inconsistencies in outcomes and measures used in clinical trials.

OBJECTIVE

The aim of the study was to systematically review all outcomes and measurement tools reported in randomized clinical trials of interventions for genitourinary symptoms associated with menopause.

EVIDENCE REVIEW

We searched PubMed, Scopus, and the Cochrane Central Register of Controlled Trials (CENTRAL) up to December 2018. Randomized controlled trials with a primary or secondary outcome of genitourinary symptoms associated with menopause, English language, and sample size of 20 or more women per study arm were included. Study characteristics, outcomes, and measurement methods were collected.

FINDINGS

The search yielded 3,478 articles of which 109 met inclusion criteria. Forty-eight different outcomes were reported with "atrophy" as the most common (56/109, 51%) followed by measures of sexual function (19/109, 17%). Almost all (108/109, 99%) trials included patient-reported measures, with 21 different measures and 39 symptom combinations. Clinician-reported scales of vulvovaginal appearance were used in 36 of 109 (33%) trials, with extensive variation in what was measured and reported. Cytological measures from the vaginal epithelium were the most commonly used objective tools (76/109, 70%).

CONCLUSIONS AND RELEVANCE

There is heterogeneity in reported outcomes and measures used in clinical trials of treatments for genitourinary symptoms at menopause and uncertainty as to which outcomes best reflect patient priorities and symptoms. The findings from this systematic review have informed an international survey of stakeholders to determine priorities for outcome selection and reporting. This survey will then inform the development of a Core Outcome Set for use in future clinical trials by the COMMA (Core OutcoMes in MenopAuse) consortium. : Video Summary:http://links.lww.com/MENO/A599.

Genitourinary syndrome of menopause: a systematic review on prevalence and treatment

IMPORTANCE

Genitourinary syndrome of menopause (GSM) consists of genitourinary tract symptoms that occur due to physical changes caused by estrogen concentrations decline after menopause. Unlike menopausal symptoms, which subside with time, GSM symptoms persist throughout a woman's life.

OBJECTIVE

This article aimed to systematically review the literature to investigate the prevalence of GSM and its treatment.

EVIDENCE REVIEW

The search was conducted in the electronic databases PubMed, CENTRAL, and EMBASE until October 2020. Eligible for the systematic review were studies and surveys conducted via questionnaires or medical interviews evaluating the existence of GSM symptoms with or without gynecological examination in postmenopausal women or women >40 years of age.

FINDINGS

After the application of predefined inclusion/exclusion criteria, 27 studies were included in the systematic review. The prevalence of GSM-related symptoms, such as vaginal dryness, irritation, itching, and dyspareunia, ranged from 13% to 87%. The use of GSM-specific treatment varied from 13% to 78%. Over-the-counter lubricants and moisturizers were the most popular therapeutic options (24.0%-85.5%), followed by low-dose vaginal estrogens (4.8%-35.0%). Vaginal health is not frequently discussed during doctor visits and awareness about the condition and the number of treatment options is low. Women are concerned about the long-term safety and side effects of hormonal treatment. The majority of women who suffer from genitourinary symptoms are dissatisfied by the treatment they have used.

CONCLUSIONS AND RELEVANCE

GSM is a highly prevalent condition among women. Nevertheless, women are frequently not aware of its cause and its treatment options. The findings of this review underline the need for education of patients and healthcare professionals regarding GSM diagnosis and treatment options.

The effect of pathophysiological changes in the vaginal milieu on the signs and symptoms of genitourinary syndrome of menopause (GSM)

IMPORTANCE AND OBJECTIVE

The aim of this study was to provide an overview of the most recent literature on genitourinary syndrome of menopause (GSM), to explore the key elements of GSM diagnosis, and the potential impact of pathophysiological changes in the vaginal milieu on vulvovaginal symptoms.

METHODS

The MEDLINE database was searched, and only articles written in English were considered. Additional references were identified by hand searching the bibliographies of the included articles.

DISCUSSIONS AND CONCLUSION

The vaginal milieu plays important roles in producing bothersome symptoms in the host. In women with GSM, low hormone states can result in pathophysiological changes in the vaginal milieu, including the vaginal microbiome and the mucosal immunity. Hormone-associated disruption of the balance of the indigenous microbiota and the dysregulation of these immune responses are the pathophysiological basis of GSM symptoms. However, whether the microbiome and mucosal immunity are markers of vulvovaginal disorder or agents actively promoting a healthy vagina are still not fully understood. It is an important area of focus.