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PROVIDER: PRJEB49096 | ENA |
REPOSITORIES: ENA
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Project description:Cervical cancer is the fourth most common cancer among women worldwide and screening pro-grams increase detection rate and survivability. Molecular screening of presence of human papil-loma viruses (HPV) as alternatives to physical examinations offers cost-efficient solutions and can be performed on self-collected samples. A persistent infection with HPV is necessary but not sufficient to develop cancer and additional biomarkers are needed to increase the precision. We have analyzed protein biomarkers found in self-collected dried cervico-vaginal fluid (CVF) from both controls and women with cervical cancer pre-stages.
2022-02-17 | PXD026064 | Pride
Project description:A lactobacilli dominated microbiota in most pre and post-menopausal women is an indicator of vaginal health. A Nugent scoring system serves as a proxy for determining the ratio of lactobacilli to other vaginal inhabitants where a high score usually represents a diseased state, whilst an intermediate score represents a warning zone. The objective of this double blinded, placebo-controlled crossover study was to evaluate in 14 post-menopausal women with an intermediate score, the effect of vaginal administration of probiotic L. rhamnosus GR-1 and L. reuteri RC-14 on the microbiota and host response. The probiotic treatment did not result in changes to clinical parameters such as dryness, irritation and comfort, compared to when placebo was applied. Analysis using 16S rRNA sequencing and metabolomics profiling revealed that the proportional abundance of Lactobacillus was increased following probiotic administration as compared to placebo, which was weakly associated with an increase in lactate levels. Analysis of host responses by microarray showed the probiotics had an immune-modulatory response and multiplex cytokine analysis showed up-regulation of IL-5. This is the first study to use an interactomic approach for the study of vaginal probiotic administration in post-menopausal women. It shows that in some cases multifaceted approaches are required to detect the subtle trigger molecular changes induced by the host to instillation of probiotic strains. A total of 35 total RNA samples extracted from vaginal brushes were analyzed on Affymetrix Gene 2.0 ST arrays from 14 Participants collected over multiple visits including administration of either a probiotic supplement or placebo control.
2014-07-20 | E-GEOD-54363 | biostudies-arrayexpress
Project description:A lactobacilli dominated microbiota in most pre and post-menopausal women is an indicator of vaginal health. A Nugent scoring system serves as a proxy for determining the ratio of lactobacilli to other vaginal inhabitants where a high score usually represents a diseased state, whilst an intermediate score represents a warning zone. The objective of this double blinded, placebo-controlled crossover study was to evaluate in 14 post-menopausal women with an intermediate score, the effect of vaginal administration of probiotic L. rhamnosus GR-1 and L. reuteri RC-14 on the microbiota and host response. The probiotic treatment did not result in changes to clinical parameters such as dryness, irritation and comfort, compared to when placebo was applied. Analysis using 16S rRNA sequencing and metabolomics profiling revealed that the proportional abundance of Lactobacillus was increased following probiotic administration as compared to placebo, which was weakly associated with an increase in lactate levels. Analysis of host responses by microarray showed the probiotics had an immune-modulatory response and multiplex cytokine analysis showed up-regulation of IL-5. This is the first study to use an interactomic approach for the study of vaginal probiotic administration in post-menopausal women. It shows that in some cases multifaceted approaches are required to detect the subtle trigger molecular changes induced by the host to instillation of probiotic strains.
2014-07-20 | GSE54363 | GEO
Project description:characterization of cervico-vaginal microbiota associated with HPV infection
| PRJEB18720 | ENA
Project description:Women persistently infected with human papillomavirus (HPV) type 16 are at high risk for development of cervical intraepithelial neoplasia grade 3 or cervical cancer (CIN3+). We aimed to identify biomarkers for progression to CIN3+ in women with persistent HPV16 infection. In this prospective study, 11,088 women aged 20â29 years were enrolled during 1991-1993, and re-invited for a second visit two years later. Cervical cytology samples obtained at both visits were tested for HPV DNA by Hybrid Capture 2 (HC2), and HC2-positive samples were genotyped by INNO-LiPA. The cohort was followed for up to 19 years via a national pathology register. To identify markers for progression to CIN3+, we performed microarray analysis on RNA extracted from cervical swabs of 30 women with persistent HPV16-infection and 11 HPV-negative women. After further validation, we found that high mRNA expression levels of TMEM45A, SERPINB5 and p16INK4a were associated with increased risk of CIN3+ in persistently HPV16-infected women. We aimed at identifying genes differentially expressed in women with persistent HPV16 infection that either progressed to CIN3+ or not. As a test of principle we first compared HPV16 persistently infected women with HPV-negative women.
2016-07-03 | E-GEOD-75132 | biostudies-arrayexpress
Project description:<p>This study aimed to highlight the relationships between vaginal microbiome composition, metabolic alterations, and gene expression changes during cervical cancer. Multi-omics analysis for the healthy (Z group), abortion (AB group), HPV infection (HP group), and cervical cancer group (CC group), qRT-PCR and cytotoxicity assays were used for validation. The CC group had the highest vaginal community diversity with decreased Lactobacillus and increase in anaerobic bacteria. In the HP group, Bifidobacteriales are obvious markers. Metabolomic analysis revealed changes in lipid metabolism pathways, the metabolic pathways of the AB and HP group were similar. Lactic acid and α-linolenic acid were negatively correlated with Anaerococcus and Porphyromonas. There were 8 up-regulated genes at HPV infection. Key upregulated genes in the CC group, including CCL2, CDKN1A, and IRF1, showed negative correlations with α-linolenic acid levels. The distinct microbial and metabolite patterns could facilitate in the diagnosis and treatment of cervical cancer. </p>
2025-11-26 | MTBLS10477 | MetaboLights
Project description:Griffithsin (GRFT) is an anti-viral lectin with potent anti-HIV activity. GRFT’s preclinical safety, lack of systemic absorption after topical administration, and lack of cross-resistance with existing products prompted its development for topical HIV pre-exposure prophylaxis. We evaluated safety, pharmacokinetics and pharmacodynamics of PC-6500 (0.1% GRFT in a carrageenan (CG) gel) in healthy, HIV-negative, non-pregnant women following once daily vaginal gel administration for 14 days. No significant adverse events, histopathological changes in cervico-vaginal mucosa, or anti-drug (GRFT) antibodies were detected. No cervicovaginal proinflammatory responses and no changes in the ectocervical transcriptome were evident. Vaginal microbiome remained largely unchanged. Reduced abundance of vaginosis-associated bacteria and decreased levels of proinflammatory chemokines (CXCL8 and CCL20) were observed. GRFT was not detected in plasma. GRFT and GRFT/CG in CVLs dose-dependently inhibited HIV and HPV, respectively, in vitro. The data suggest GRFT/CG is a promising on-demand multipurpose prevention product that warrants further investigation.
2021-10-04 | GSE141478 | GEO