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https://www.readbyqxmd.com/read/28903767/treatment-of-biofilms-in-bacterial-vaginosis-by-an-amphoteric-tenside-pessary-clinical-study-and-microbiota-analysis
#1
Cornelia Gottschick, Zhi-Luo Deng, Marius Vital, Clarissa Masur, Christoph Abels, Dietmar H Pieper, Manfred Rohde, Werner Mendling, Irene Wagner-Döbler
BACKGROUND: Bacterial vaginosis (BV) is the most common vaginal syndrome among women in their reproductive years. It is associated with an increased risk of acquiring sexually transmitted infections and complications like preterm labor. BV is characterized by a high recurrence rate for which biofilms frequently found on vaginal epithelial cells may be a reason. RESULTS: Here, we report a controlled randomized clinical trial that tested the safety and effectiveness of a newly developed pessary containing an amphoteric tenside (WO3191) to disrupt biofilms after metronidazole treatment of BV...
September 13, 2017: Microbiome
https://www.readbyqxmd.com/read/28898440/low-lactobacilli-abundance-and-polymicrobial-diversity-in-the-lower-reproductive-tract-of-female-rhesus-monkeys-do-not-compromise-their-reproductive-success
#2
Wellington Z Amaral, Gabriele R Lubach, Amita Kapoor, Alexandra Proctor, Gregory J Phillips, Mark Lyte, Christopher L Coe
The lower reproductive tract of nonhuman primates is colonized with a diverse microbiota, resembling bacterial vaginosis (BV), a gynecological condition associated with negative reproductive outcomes in women. Our 4 aims were to: (i) assess the prevalence of low Lactobacilli and a BV-like profile in female rhesus monkeys; (ii) quantify cytokines in their cervicovaginal fluid (CVF); (iii) examine the composition and structure of their mucosal microbiota with culture-independent sequencing methods; and (iv) evaluate the potential influence on reproductive success...
September 12, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28893789/gemini-cationic-amphiphiles-control-biofilm-formation-by-bacterial-vaginosis-pathogens
#3
Ammar Algburi, Yingyue Zhang, Richard Weeks, Nicole Comito, Saskia Zehm, Juanita Pinto, Kathryn E Uhrich, Michael L Chikindas
Antibiotic resistance and recurrence of bacterial vaginosis (BV), a polymicrobial infection, justify the need for novel antimicrobials to counteract microbial resistance to conventional antibiotics. Previously, two series of cationic amphiphiles (CAms), which self-assemble into supramolecular nanostructures with membrane-lytic properties, were designed with hydrophilic head groups and non-polar domains. The combination of CAms with commonly prescribed antibiotics is suggested as a promising strategy for targeting microorganisms that are resistant to conventional antibiotics...
September 11, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28893284/role-of-sex-hormones-and-the-vaginal-microbiome-in-susceptibility-and-mucosal-immunity-to-hiv-1-in-the-female-genital-tract
#4
REVIEW
Danielle Vitali, Jocelyn M Wessels, Charu Kaushic
While the prevalence of Human immunodeficiency virus-1 (HIV-1) infection has stabilized globally, it continues to be the leading cause of death among women of reproductive age. The majority of new infections are transmitted heterosexually, and women have consistently been found to be more susceptible to HIV-1 infection during heterosexual intercourse compared to men. This emphasizes the need for a deeper understanding of how the microenvironment in the female genital tract (FGT) could influence HIV-1 acquisition...
September 12, 2017: AIDS Research and Therapy
https://www.readbyqxmd.com/read/28892902/effects-of-different-contraceptive-methods-on-cervico-vaginal-cytology
#5
Khushboo Garg, Anjali Khare, Rani Bansal, Sangeeta Sharma, Neha Chaudhary
INTRODUCTION: The vaginal flora of healthy adult women of reproductive age group constitutes predominantly Lactobacilli which inhibits the growth of other microorganisms (by maintaining acidic pH). The vaginal microflora is altered in favour of anaerobes in women using Intra Uterine Contraceptive Device (IUCD). Also, it can cause morphologic changes in both squamous and endocervical columnar cells. Similarly, the prevalence of vaginal lactobacilli is reduced among women using diaphragm-spermicide or spermicide alone...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28875084/prevalence-of-bacterial-vaginosis-in-portuguese-pregnant-women-and-vaginal-colonization-by-gardnerella-vaginalis
#6
Daniela Machado, Joana Castro, José Martinez-de-Oliveira, Cristina Nogueira-Silva, Nuno Cerca
BACKGROUND: We aimed to determine the prevalence of vaginal colonization by Gardnerella vaginalis and of bacterial vaginosis (BV) in Portuguese pregnant women, and to identify risk factors for BV and G. vaginalis colonization in pregnancy. METHODS: A cross-sectional study was conducted among pregnant women aged ≥ 18 years who were attending in two public hospitals of the Northwest region of Portugal. Epidemiological data was collected by anonymous questionnaire...
2017: PeerJ
https://www.readbyqxmd.com/read/28867602/a-phase-3-double-blind-placebo-controlled-study-of-the-effectiveness-and-safety-of-single-oral-doses-of-secnidazole-2-g-for-the-treatment-of-women-with-bacterial-vaginosis
#7
Jane R Schwebke, Franklin G Morgan, William Koltun, Paul Nyirjesy
BACKGROUND: A novel single oral dose granule formulation of secnidazole 2 g, a 5-nitroimidazole with a longer half-life (∼17 hours) than metronidazole (∼8 hours), is being developed to treat bacterial vaginosis (BV). OBJECTIVE: To evaluate the effectiveness and safety of single-dose secnidazole 2 g compared to placebo for the treatment of women with BV. STUDY DESIGN: 189 women with BV were randomized 2:1 to receive a single oral dose of secnidazole 2 g (N=125) or matched placebo (N=64) at 21 centers in the US...
August 31, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28860468/characterization-of-cervico-vaginal-microbiota-in-women-developing-persistent-high-risk-human-papillomavirus-infection
#8
Monica Di Paola, Cristina Sani, Ann Maria Clemente, Anna Iossa, Eloisa Perissi, Giuseppe Castronovo, Michele Tanturli, Damariz Rivero, Federico Cozzolino, Duccio Cavalieri, Francesca Carozzi, Carlotta De Filippo, Maria Gabriella Torcia
Changes in cervico-vaginal microbiota with Lactobacillus depletion and increased microbial diversity facilitate human papillomavirus (HPV) infection and might be involved in viral persistence and cancer development. To define the microbial Community State Types (CSTs) associated with high-risk HPV-persistence, we analysed 55 cervico-vaginal samples from HPV positive (HPV+) women out of 1029 screened women and performed pyrosequencing of 16S rDNA. A total of 17 samples from age-matched HPV negative (HPV-) women were used as control...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28846702/association-between-statin-use-the-vaginal-microbiome-and-gardnerella-vaginalis-vaginolysin-mediated-cytotoxicity
#9
Abdallah A Abdelmaksoud, Philippe H Girerd, Erin M Garcia, J Paul Brooks, Lauren M Leftwich, Nihar U Sheth, Steven P Bradley, Myrna G Serrano, Jennifer M Fettweis, Bernice Huang, Jerome F Strauss, Gregory A Buck, Kimberly K Jefferson
BACKGROUND: Bacterial vaginosis (BV) is the leading dysbiosis of the vaginal microbiome. The pathways leading towards the development of BV are not well understood. Gardnerella vaginalis is frequently associated with BV. G. vaginalis produces the cholesterol-dependent cytolysin (CDC), vaginolysin, which can lyse a variety of human cells and is thought to play a role in pathogenesis. Because membrane cholesterol is required for vaginolysin to function, and because HMG-CoA reductase inhibitors (statins) affect not only serum levels of cholesterol but membrane levels as well, we hypothesized that statins might affect the vaginal microbiome...
2017: PloS One
https://www.readbyqxmd.com/read/28831285/prevalence-of-bacterial-vaginosis-and-associated-risk-factors-among-women-complaining-of-genital-tract-infection
#10
Adane Bitew, Yeshiwork Abebaw, Delayehu Bekele, Amete Mihret
BACKGROUND: Bacterial vaginosis is a global concern due to the increased risk of acquisition of sexually transmitted infections. OBJECTIVES: To determine the prevalence of bacterial vaginosis and bacteria causing aerobic vaginitis. METHODS: A cross-sectional study was conducted among 210 patients between September 2015 and July 2016 at St. Paul's Hospital. Gram-stained vaginal swabs were examined microscopically and graded as per Nugent's procedure...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28820412/-to-the-state-of-the-fetoplacental-complex-in-women-with-the-threat-of-abortion
#11
L Rzaguliyeva, Z Osmanli, S Akperbekova, N Meybalizade
The goal is a comprehensive study of the morphofunctional state of the mother-placenta-fetus system in placental insufficiency and infection. 250 pregnant and puerperas for the period 2008-2014 were examined. Detection of bacterial flora was carried out in 35 pregnant women aged 20.4±0.8 years with the threat of abortion from an early gestation period and a prolonged persistent infection of the genitals, bacterial vaginosis. Methods are applied: culture, ion chromatography, gas-liquid chromatography with mass spectrometry...
July 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28812207/the-vaginal-microbiome-and-its-potential-to-impact-efficacy-of-hiv-pre-exposure-prophylaxis-for-women
#12
REVIEW
Jennifer Velloza, Renee Heffron
PURPOSE OF REVIEW: This review describes existing evidence addressing the potential modulation of pre-exposure prophylaxis (PrEP) products, specifically 1% tenofovir (TFV) gel and oral tenofovir-based PrEP, by vaginal dysbiosis and discusses future considerations for delivering novel, long-acting PrEP products to women at high risk for vaginal dysbiosis and HIV. RECENT FINDINGS: We describe results from analyses investigating the modification of PrEP efficacy by vaginal dysbiosis and studies of biological mechanisms that could render PrEP ineffective in the presence of specific microbiota...
August 15, 2017: Current HIV/AIDS Reports
https://www.readbyqxmd.com/read/28807017/the-urinary-microbiota-of-men-and-women-and-its-changes-in-women-during-bacterial-vaginosis-and-antibiotic-treatment
#13
Cornelia Gottschick, Zhi-Luo Deng, Marius Vital, Clarissa Masur, Christoph Abels, Dietmar H Pieper, Irene Wagner-Döbler
BACKGROUND: The urinary microbiota is similarly complex as the vaginal and penile microbiota, yet its role as a reservoir for pathogens and for recurrent polymicrobial biofilm diseases like bacterial vaginosis (BV) is not clear. RESULTS: Here, we analysed the urinary microbiota of healthy men and women and compared it with that of women during BV and after antibiotic treatment using next-generation sequencing of the 16S rRNA gene V1-V2 regions. Eight different community types, so called urotypes (UT), were identified in healthy humans, all of which were shared between men and women, except UT 7, dominated in relative abundance by Lactobacillus crispatus, which was found in healthy women only...
August 14, 2017: Microbiome
https://www.readbyqxmd.com/read/28804083/vaginal-infections-in-haitian-immigrant-women-living-in-miami-florida
#14
Julia Seay, Morgan Mandigo, Karina Hew, Erin Kobetz
OBJECTIVE: To characterize vulvovaginal candidiasis (VC), trichomonas vaginalis (TV), and bacterial vaginosis (BV) among Haitian women living in Miami to identify contributing factors to cervical cancer disparity in this population. METHODS: Using a CBPR framework, 246 Haitian women (ages 21-65) were recruited. Self-collected cervical cytology specimens were analyzed for VC, TV, and BV. RESULTS: The proportion of participants with VC, TV, and BV, were 7...
2017: Journal of Health Care for the Poor and Underserved
https://www.readbyqxmd.com/read/28802585/genomics-of-the-new-species-kingella-negevensis-diagnostic-issues-identification-of-a-locus-encoding-a-rtx-toxin
#15
Onya Opota, Sacha Laurent, Trestan Pillonel, Marie Léger, Sabrina Trachsel, Guy Prod'hom, Katia Jaton, Gilbert Greub
Kingella kingae, producing the cytotoxic RTX protein, is a causative agent of serious infections in humans such as bacteremia, endocarditis and osteoarticular infection, especially in young children. Recently, Kingella negevensis, a related species, has been isolated from the oral cavity of healthy children. In this study, we report the isolation of K. negevensis strain eburonensis, initially misidentified as K. kingae with MALDI-TOF MS, from a vaginal specimen of a patient suffering of vaginosis. The genome sequencing and analysis of this strain together with comparative genomics of the Kingella genus revealed that K...
August 10, 2017: Microbes and Infection
https://www.readbyqxmd.com/read/28792372/treatment-failure-of-bacterial-vaginosis-is-not-associated-with-higher-loads-of-atopobium-vaginae-and-gardnerella-vaginalis
#16
Carolina Sanitá Tafner Ferreira, Gilbert Gerard Donders, Cristina Maria Garcia de Lima Parada, Andrea da Rocha Tristão, Thaiz Fernandes, Márcia Guimarães da Silva, Camila Marconi
PURPOSE: Cervicovaginal Atopobium vaginae and Gardnerella vaginalis are strongly associated with bacterial vaginosis (BV) and are the main components of vaginal biofilms. The low efficacy of BV treatment with metronidazole may be due to the presence of such biofilms. Thus, the aim of this study was to compare the pretreatment cervicovaginal loads of A. vaginae and G. vaginalis for women who restored normal flora and those who persisted with BV after a full course of oral metronidazole...
August 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28764612/influencing-the-importance-of-health-partners-and-hygiene-among-zambian-women
#17
Violeta J Rodriguez, Maureen Chisembele, Deborah L Jones, Ryan Cook, Stephen M Weiss, Maria L Alcaide
Intravaginal practices (IVPs) are common in Zambia and are usually practiced for hygiene, partner pleasure, and health. IVPs are associated with HIV acquisition, changes in the vaginal flora, and bacterial vaginosis (BV), making it important to understand the decision-making process behind IVP engagement. The Women's and Sexual Health (WASH) intervention decreased IVP engagement among HIV-infected Zambian women, though change in reasons for engagement has not been assessed. We used conjoint analysis (CA) to quantify the decision-making process of IVP engagement and evaluated how the WASH intervention impacted these factors...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28762360/screening-for-bacterial-vaginosis-before-intrauterine-device-insertion-at-a-family-planning-clinic-in-south-west-nigeria
#18
Opeyemi Rebecca Akinajo, Folasade A Bello, Oluwasomidoyin O Bello, Oladapo O Olayemi
AIM: This study determined the prevalence of bacterial vaginosis (BV) among clients before insertion of intrauterine device (IUD) and compared the incidence of complications between participants who were positive and negative for BV. PATIENTS AND METHODS: This was an observational cohort study that was performed between May 2014 and September 2014. A total of 360 women were recruited and followed up for 1 month. High vaginal swabs were obtained from each participant pre-insertion of the IUD and 1 month post-insertion...
April 2017: Nigerian Postgraduate Medical Journal
https://www.readbyqxmd.com/read/28738736/bacterial-vaginosis-and-the-risk-of-early-miscarriage-in-women-undergoing-intracytoplasmic-sperm-injection-cycles-a-prospective-cohort-study
#19
Ashraf Moini, Ladan Mohammadi Yeganeh, Marzieh Shiva, Malihe Ahmadieh, Reza Salman Yazdi, Fatemeh Hasani, Narges Bagheri Lankarani, Azam Sanati
This study aimed to assess the possible association of bacterial vaginosis (BV) and early miscarriage in 408 women undergoing intracytoplasmic sperm injection (ICSI) for reasons of male infertility. A vaginal sample was obtained before oocyte retrieval and evaluated for BV-associated bacteria using the Nugent scoring system. The primary outcome was early miscarriage and the secondary outcomes included implantation, pregnancy, late miscarriage, preterm delivery and live birth rates. Chi-square, ANOVA, relative risk and odds ratio were used for data analysis where appropriate...
July 24, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28732773/efficacy-of-oral-pre-exposure-prophylaxis-prep-for-hiv-among-women-with-abnormal-vaginal-microbiota-a-post-hoc-analysis-of-the-randomised-placebo-controlled-partners-prep-study
#20
Renee Heffron, R Scott McClelland, Jennifer E Balkus, Connie Celum, Craig R Cohen, Nelly Mugo, Elizabeth Bukusi, Deborah Donnell, Jairam Lingappa, James Kiarie, Tina Fiedler, Matthew Munch, David N Fredricks, Jared M Baeten
BACKGROUND: Daily oral tenofovir-based pre-exposure prophylaxis (PrEP) is high efficacious for HIV prevention among women with high adherence. However, the effect of abnormal vaginal microbiota on PrEP efficacy is of concern. We investigated whether bacterial vaginosis modified the efficacy of oral PrEP. METHODS: We used prospectively collected data from women in the Partners PrEP Study, a placebo-controlled trial of daily oral PrEP (either tenofovir monotherapy or a combination of tenofovir and emtricitabine) in HIV serodiscordant couples aged 18 years or older in Kenya and Uganda that showed high efficacy in women...
July 18, 2017: Lancet HIV
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