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https://www.readbyqxmd.com/read/28931859/a-longitudinal-analysis-of-the-vaginal-microbiota-and-vaginal-immune-mediators-in-women-from-sub-saharan-africa
#1
Vicky Jespers, Jordan Kyongo, Sarah Joseph, Liselotte Hardy, Piet Cools, Tania Crucitti, Mary Mwaura, Gilles Ndayisaba, Sinead Delany-Moretlwe, Jozefien Buyze, Guido Vanham, Janneke H H M van de Wijgert
In cross-sectional studies increased vaginal bacterial diversity has been associated with vaginal inflammation which can be detrimental for health. We describe longitudinal changes at 5 visits over 8 weeks in vaginal microbiota and immune mediators in African women. Women (N = 40) with a normal Nugent score at all visits had a stable lactobacilli dominated microbiota with prevailing Lactobacillus iners. Presence of prostate-specific antigen (proxy for recent sex) and being amenorrhoeic (due to progestin-injectable use), but not recent vaginal cleansing, were significantly associated with microbiota diversity and inflammation (controlled for menstrual cycle and other confounders)...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28923300/influence-of-co-infection-complicated-with-human-papillomavirus-on-cervical-intraepithelial-neoplasia-development-in-patients-with-atypical-squamous-cells-of-undetermined-significance
#2
Hisami Kiseki, Yutaka Tsukahara, Natsumi Tajima, Ayako Tanaka, Aya Horimoto, Naohiko Hashimura
AIM: Human papillomaviruses (HPV) infection is a primary cause of the development of cervical precancerous lesions and cervical cancer. However, the influence of other infections on intraepithelial neoplasia (CIN) development has not been fully elucidated. We evaluated the association between co-infection and CIN development in subjects with atypical squamous cells of undetermined significance (ASCUS). METHOD: Data for ASCUS subjects who had undergone testing for high risk HPV (HR-HPV) and pathological diagnosis were analyzed...
September 8, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28922066/the-effect-of-lysozyme-on-reducing-biofilms-by-staphylococcus-aureus-pseudomonas-aeruginosa-and-gardnerella-vaginalis-an-in-vitro-examination
#3
Mirsada Hukić, Dzenita Seljmo, Amra Ramovic, Monia Avdić Ibrišimović, Serkan Dogan, Jasna Hukic, Elma Feric Bojic
Two basic questions about lysozyme activities on the selected microorganisms were investigated, namely whether lysozyme inhibits biofilm production and which concentrations of the enzyme have the ability to change the natural biofilm producing capacity of different strains of Staphylococcus aureus (methicillin sensitive and resistant), Streptococcus pyogenes, Pseudomonas aeruginosa, and Gardnerella vaginalis. The effect of lysozyme on biofilm formation capacities of 16 strains of selected microorganisms was investigated, whereby four testing replicates have been performed in vitro using the Test Tube method, and the potential of lysozyme to change biofilm forming capacities depending on its concentration, species, and strains of microorganisms is demonstrated...
September 18, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28915448/the-composition-of-the-vaginal-microbiome-in-first-trimester-pregnant-women-influences-the-level-of-autophagy-and-stress-in-vaginal-epithelial-cells
#4
Dimitrios Nasioudis, Larry J Forney, G Maria Schneider, Karol Gliniewicz, Michael T France, Allison Boester, Mio Sawai, Jessica Scholl, Steven S Witkin
Epithelial cells lining the vagina are major components of genital tract immunity. The influence of the vaginal microbiome on properties of host epithelial cells is largely unexplored. We evaluated whether differences in the most abundant lactobacilli species or bacterial genera in the vagina of first trimester pregnant women were associated with variations in the extent of stress and autophagy in vaginal epithelial cells. Vaginal swabs from 154 first trimester pregnant women were analyzed for bacterial composition by amplification and sequencing of the V1-V3 region of bacterial 16S rRNA genes...
September 8, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28903767/treatment-of-biofilms-in-bacterial-vaginosis-by-an-amphoteric-tenside-pessary-clinical-study-and-microbiota-analysis
#5
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/28893789/gemini-cationic-amphiphiles-control-biofilm-formation-by-bacterial-vaginosis-pathogens
#6
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/28875084/prevalence-of-bacterial-vaginosis-in-portuguese-pregnant-women-and-vaginal-colonization-by-gardnerella-vaginalis
#7
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/28861766/in-vitro-probiotic-properties-of-lactobacillus-salivarius-mg242-isolated-from-human-vagina
#8
Chang-Ho Kang, Seul Hwa Han, YongGyeong Kim, Nam-Soo Paek, Jae-Seong So
Vulvovaginal candidiasis (VVC) is a very common infection worldwide that is mainly caused by Candida albicans. In a previous study, we showed that Lactobacillus salivarius MG242 has anti-Gardnerella vaginalis activity. In this study, we investigated the potential of using L. salivarius MG242 for biocontrol of C. albicans. In line with the results from a spot overlay assay, MG242 inhibited the growth of C. albicans by 99.99 ± 0.01% in co-culture, suggesting that L. salivarius MG242 has the potential to be developed into a probiotic formula to treat or prevent VVC...
August 31, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28860491/influence-of-pregnancy-history-on-the-vaginal-microbiome-of-pregnant-women-in-their-first-trimester
#9
Dimitrios Nasioudis, Larry J Forney, G Maria Schneider, Karol Gliniewicz, Michael France, Allison Boester, Mio Sawai, Jessica Scholl, Steven S Witkin
Pregnancy permanently alters maternal anatomy, physiology and immunity. We evaluated if the vaginal microbiome differed between women with a first or subsequent conception. Relative abundance of bacteria in the vaginal microbiome in first trimester pregnant women, 52 with their first known conception, 26 with a prior spontaneous or induced abortion but no deliveries and 77 with at least one prior birth, was determined by classifying DNA sequences from the V1-V3 region of bacterial 16 S rRNA genes. Lactobacillus crispatus was the numerically most abundant bacterium in 76...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28860468/characterization-of-cervico-vaginal-microbiota-in-women-developing-persistent-high-risk-human-papillomavirus-infection
#10
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
#11
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/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/28803864/the-detection-of-microorganisms-related-to-urethritis-from-the-oral-cavity-of-male-patients-with-urethritis
#14
Phuong Thi Le, Ryoichi Hamasuna, Masahiro Matsumoto, Keiichi Furubayashi, Masayuki Hatanaka, Shuichi Kawai, Takamasa Yamaguchi, Kazutaka Uehara, Norihiko Murakami, Masaru Yoshioka, Ken Nakayama, Yutaka Shiono, Keisuke Muraoka, Masahiko Suzuki, Naohiro Fujimoto, Tetsuro Matsumoto
OBJECTIVES: To investigate the presence of microorganisms related to urethritis in the oral cavity of male patients with urethritis and the efficacies of antimicrobials for urethritis on microorganisms in the oral cavity. METHODS: Ninety-two male patients with urethritis and 17 male controls participated to this study at 12 urology clinics in Japan between March 2014 and March 2015. The first voided urine (FVU) and oral wash fluid (OWF) specimens were collected from the participants...
October 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28792372/treatment-failure-of-bacterial-vaginosis-is-not-associated-with-higher-loads-of-atopobium-vaginae-and-gardnerella-vaginalis
#15
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/28764658/comparative-genomic-and-phylogenomic-analyses-of-the-bifidobacteriaceae-family
#16
Gabriele Andrea Lugli, Christian Milani, Francesca Turroni, Sabrina Duranti, Leonardo Mancabelli, Marta Mangifesta, Chiara Ferrario, Monica Modesto, Paola Mattarelli, Killer Jiří, Douwe van Sinderen, Marco Ventura
BACKGROUND: Members of the Bifidobacteriaceae family represent both dominant microbial groups that colonize the gut of various animals, especially during the suckling stage of their life, while they also occur as pathogenic bacteria of the urogenital tract. The pan-genome of the genus Bifidobacterium has been explored in detail in recent years, though genomics of the Bifidobacteriaceae family has not yet received much attention. Here, a comparative genomic analyses of 67 Bifidobacteriaceae (sub) species including all currently recognized genera of this family, i...
August 1, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28735999/results-of-real-time-multiplex-polymerase-chain-reaction-assay-in-renal-transplant-recipients-with-sterile-pyuria
#17
M Sarier, M Demir, S Goktas, I Duman, M Buyukkinaci, Y Yuksel, S Tekin, A H Yavuz, A Sengul
Urinary tract infections are a major cause of morbidity and hospitalization after renal transplantation. Patients treated with immunosuppressive drugs suffer not only from common uropathogens but also from opportunistic infections caused by unusual uropathogens. Sterile pyuria is associated with numerous infectious agents including viruses, fungi, and atypical or fastidious organisms. The objective of this study was to investigate the pathogens using real-time multiplex polymerase chain reaction (rtMPCR) assay in sterile pyuria of renal transplant recipients...
July 2017: Transplantation Proceedings
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
#18
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
https://www.readbyqxmd.com/read/28700747/the-association-between-ethnicity-and-vaginal-microbiota-composition-in-amsterdam-the-netherlands
#19
Hanneke Borgdorff, Charlotte van der Veer, Robin van Houdt, Catharina J Alberts, Henry J de Vries, Sylvia M Bruisten, Marieke B Snijder, Maria Prins, Suzanne E Geerlings, Maarten F Schim van der Loeff, Janneke H H M van de Wijgert
OBJECTIVE: To evaluate whether ethnicity is independently associated with vaginal microbiota (VMB) composition in women living in Amsterdam, the Netherlands, as has been shown for American women. METHODS: Women (18-34 years, non-pregnant, N = 610) representing the six largest ethnic groups (Dutch, African Surinamese, South-Asian Surinamese, Turkish, Moroccan, and Ghanaian) were sampled from the population-based HELIUS study. Sampling was performed irrespective of health status or healthcare seeking behavior...
2017: PloS One
https://www.readbyqxmd.com/read/28686189/correction-jang-s-e-et-al-lactobacillus-rhamnosus-hn001-and-lactobacillus-acidophilus-la-14-attenuate-gardnerella-vaginalis-infected-bacterial-vaginosis-in-mice-nutrients-2017-9-531
#20
Se-Eun Jang, Jin-Ju Jeong, Su-Young Choi, Hyunji Kim, Myung Joo Han, Dong-Hyun Kim
We would like to submit the following corrections to our recently published paper [1] due to the reported wrong name of probiotic mixture and the dose of some drugs. ...].
July 7, 2017: Nutrients
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