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https://www.readbyqxmd.com/read/28700747/the-association-between-ethnicity-and-vaginal-microbiota-composition-in-amsterdam-the-netherlands
#1
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
#2
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
https://www.readbyqxmd.com/read/28649404/comparative-transcriptomic-analysis-of-gardnerella-vaginalis-biofilms-vs-planktonic-cultures-using-rna-seq
#3
Joana Castro, Angela França, Katie R Bradwell, Myrna G Serrano, Kimberly K Jefferson, Nuno Cerca
Bacterial vaginosis is the most common gynecological disorder affecting women of reproductive age. Bacterial vaginosis is frequently associated with the development of a Gardnerella vaginalis biofilm. Recent data indicates that G. vaginalis biofilms are more tolerant to antibiotics and are able to incorporate other bacterial vaginosis -associated species, yielding a multi-species biofilm. However, despite its apparent role in bacterial vaginosis, little is known regarding the molecular determinants involved in biofilm formation by G...
2017: NPJ Biofilms and Microbiomes
https://www.readbyqxmd.com/read/28637523/ureaplasma-urealyticum-and-u-parvum-in-sexually-active-women-attending-public-health-clinics-in-brazil
#4
T N Lobão, G B Campos, N N Selis, A T Amorim, S G Souza, S S Mafra, L S Pereira, D B Dos Santos, T B Figueiredo, L M Marques, J Timenetsky
Ureaplasma urealyticum and U. parvum have been associated with genital infections. The purpose of this study was to detect the presence of ureaplasmas and other sexually transmitted infections in sexually active women from Brazil and relate these data to demographic and sexual health, and cytokines IL-6 and IL-1β. Samples of cervical swab of 302 women were examined at the Family Health Units in Vitória da Conquista. The frequency of detection by conventional PCR was 76·2% for Mollicutes. In qPCR, the frequency found was 16·6% for U...
June 22, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28617561/cervicovaginal-bacteria-and-fungi-in-pregnant-diabetic-and-non-diabetic-women-a-multicenter-observational-cohort-study
#5
A Lukic, A Napoli, I Santino, P Bianchi, F Nobili, G Ciampittiello, M R Nardone, M Santomauro, M Di Properzio, D Caserta
OBJECTIVE: We evaluated the prevalence of cervicovaginal Bacteria, group B Streptococcus (GBS), Gardnerella vaginalis (GV), Candida spp., Chlamydia trachomatis (CT), Mycoplasma hominis (MH) and Ureaplasma urealyticum (UU) in pregnant women with and without diabetes mellitus (DM). PATIENTS AND METHODS: Cervicovaginal swabs were gathered from 473 pregnant patients divided into 127 diabetic and 346 non-diabetic. The results were correlated to gestational age, parity and glycemic control...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28600771/multiplex-peptide-nucleic-acid-fluorescence-in-situ-hybridization-pna-fish-for-diagnosis-of-bacterial-vaginosis
#6
Antonio Machado, Nuno Cerca
Fluorescence in situ hybridization (FISH) is a molecular method used to identify and quantify microorganisms in a wide range of samples. This technique combines the simplicity of microscopic observation and the specificity of DNA/rRNA hybridization, allowing detection of selected bacterial species and morphologic visualization. Here, we describe a quantitative molecular diagnosis of bacterial vaginosis, based on the classical Nugent score. Our probes are able to differentiate Lactobacillus spp. and Gardnerella vaginalis from the other undefined bacterial species considered in the Nugent score...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28594946/association-of-vaginal-dysbiosis-and-biofilm-with-contraceptive-vaginal-ring-biomass-in-african-women
#7
Liselotte Hardy, Vicky Jespers, Irith De Baetselier, Jozefien Buyze, Lambert Mwambarangwe, Viateur Musengamana, Janneke van de Wijgert, Tania Crucitti
We investigated the presence, density and bacterial composition of contraceptive vaginal ring biomass and its association with the vaginal microbiome. Of 415 rings worn by 120 Rwandese women for three weeks, the biomass density was assessed with crystal violet and the bacterial composition of biomass eluates was assessed with quantitative polymerase chain reaction (qPCR). The biomass was visualised after fluorescence in situ hybridisation (FISH) and with scanning electron microscopy (SEM). The vaginal microbiome was assessed with Nugent scoring and vaginal biofilm was visualised after FISH...
2017: PloS One
https://www.readbyqxmd.com/read/28583109/prevalence-and-distribution-of-gardnerella-vaginalis-subgroups-in-women-with-and-without-bacterial-vaginosis
#8
Migle Janulaitiene, Virginija Paliulyte, Svitrigaile Grinceviciene, Jolita Zakareviciene, Alma Vladisauskiene, Agne Marcinkute, Milda Pleckaityte
BACKGROUND: Bacterial vaginosis (BV) is one of the leading causes of vaginal complaints among women of childbearing age. The role of Gardnerella vaginalis remains controversial due to its presence in healthy and BV-type vaginal microflora. The phenotypic and genotypic heterogeneity of G. vaginalis suggested the existence of strain variants linked with different health conditions. We sought to analyze prevalence and distribution of G. vaginalis subgroups (clades) in BV-positive (n = 29), partial BV (n = 27), and BV-negative (n = 53) vaginal samples from Lithuanian women...
June 5, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28572753/changes-in-vaginal-community-state-types-reflect-major-shifts-in-the-microbiome
#9
J Paul Brooks, Gregory A Buck, Guanhua Chen, Liyang Diao, David J Edwards, Jennifer M Fettweis, Snehalata Huzurbazar, Alexander Rakitin, Glen A Satten, Ekaterina Smirnova, Zeev Waks, Michelle L Wright, Chen Yanover, Yi-Hui Zhou
Background: Recent studies of various human microbiome habitats have revealed thousands of bacterial species and the existence of large variation in communities of microorganisms in the same habitats across individual human subjects. Previous efforts to summarize this diversity, notably in the human gut and vagina, have categorized microbiome profiles by clustering them into community state types (CSTs). The functional relevance of specific CSTs has not been established. Objective: We investigate whether CSTs can be used to assess dynamics in the microbiome...
2017: Microbial Ecology in Health and Disease
https://www.readbyqxmd.com/read/28572388/vaginal-bacteria-modify-hiv-tenofovir-microbicide-efficacy-in-african-women
#10
Nichole R Klatt, Ryan Cheu, Kenzie Birse, Alexander S Zevin, Michelle Perner, Laura Noël-Romas, Anneke Grobler, Garrett Westmacott, Irene Y Xie, Jennifer Butler, Leila Mansoor, Lyle R McKinnon, Jo-Ann S Passmore, Quarraisha Abdool Karim, Salim S Abdool Karim, Adam D Burgener
Antiretroviral-based strategies for HIV prevention have shown inconsistent results in women. We investigated whether vaginal microbiota modulated tenofovir gel microbicide efficacy in the CAPRISA (Centre for the AIDS Program of Research in South Africa) 004 trial. Two major vaginal bacterial community types-one dominated by Lactobacillus (59.2%) and the other where Gardnerella vaginalis predominated with other anaerobic bacteria (40.8%)-were identified in 688 women profiled. Tenofovir reduced HIV incidence by 61% (P = 0...
June 2, 2017: Science
https://www.readbyqxmd.com/read/28571565/c-reactive-protein-is-differentially-modulated-by-co-existing-infections-vitamin-deficiencies-and-maternal-factors-in-pregnant-and-lactating-indigenous-panamanian-women
#11
Doris González-Fernández, Emérita Del Carmen Pons, Delfina Rueda, Odalis Teresa Sinisterra, Enrique Murillo, Marilyn E Scott, Kristine G Koski
BACKGROUND: The usefulness of C-reactive protein (CRP) as a non-specific marker of inflammation during pregnancy and lactation is unclear in impoverished populations where co-existing infections and vitamin deficiencies are common. METHODS: This cross-sectional study in Panama recruited 120 pregnant and 99 lactating Ngäbe-Buglé women from 14 communities in rural Panama. Obstetric history, indoor wood smoke exposure, fieldwork, BMI, vitamins A, B12, D, and folic acid, and inflammation markers (CRP, neutrophil/lymphocyte ratio (NLR), plateletcrit and cytokines) were measured...
June 2, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28546029/gardnerella-vaginalis-bacteremia-associated-with-severe-acute-encephalopathy-in-a-young-female-patient
#12
Jacques Tankovic, Albertas Timinskas, Migle Janulaitiene, Milda Zilnyte, Jean-Luc Baudel, Eric Maury, Aurelija Zvirbliene, Milda Pleckaityte
Gardnerella vaginalis is a facultative anaerobic bacterium that inhabits the genitourinary tract of both healthy women and those with bacterial vaginosis. We report a case of G. vaginalis bacteremia associated with severe toxic encephalopathy in a young woman. Anaerobic blood cultures yielded pure growth of small gram-variable rods later identified as G. vaginalis by both rapid biochemical tests and 16S rRNA gene sequencing. The patient recovered after treatment with amoxicillin-clavulanate according to the in vitro susceptibility testing...
May 22, 2017: Anaerobe
https://www.readbyqxmd.com/read/28545241/lactobacillus-rhamnosus-hn001-and-lactobacillus-acidophilus-la-14-attenuate-gardnerella-vaginalis-infected-bacterial-vaginosis-in-mice
#13
Se-Eun Jang, Jin-Ju Jeong, Su-Young Choi, Hyunji Kim, Myung Joo Han, Dong-Hyun Kim
Oral administration of a probiotic mixture (PM; Respecta(®)) consisting of Lactobacillus rhamnosus HN001 (L1), Lactobacillus acidophilus La-14 (L2), and lactoferrin RCXTM results in colonization of these probiotics in the vagina of healthy women. Therefore, we examined whether vaginal colonization of the PM ingredients L1 and L2 could attenuate bacterial vaginosis (BV). BV was induced in mice via β-estradiol-3-benzoate-induced immunosuppression and intravaginal inoculation with Gardnerella vaginalis (GV)...
May 23, 2017: Nutrients
https://www.readbyqxmd.com/read/28522362/susceptibility-of-bacterial-vaginosis-bv-associated-bacteria-to-secnidazole-compared-to-metronidazole-tinidazole-and-clindamycin
#14
Melinda A B Petrina, Lisa A Cosentino, Lorna K Rabe, Sharon L Hillier
Secnidazole, a 5-nitroimidazole with a longer half-life, is structurally related to metronidazole and tinidazole. For treatment of bacterial vaginosis (BV), secnidazole is a suitable single-dose oral drug having a longer serum half-life than metronidazole. The objective of this study was to evaluate the antimicrobial susceptibility of vaginal isolates of facultative and anaerobic bacteria to secnidazole, metronidazole, tinidazole and clindamycin. A total of 605 unique BV-related bacteria and 108 isolates of lactobacilli recovered from the human vagina of US women during the years 2009-2015 were tested for antimicrobial susceptibility by the agar dilution CLSI reference method to determine the minimal inhibitory concentration (MIC)...
May 15, 2017: Anaerobe
https://www.readbyqxmd.com/read/28473387/draft-genome-sequence-of-gardnerella-vaginalis-strain-atcc-49145-associated-with-bacterial-vaginosis
#15
Destaalem T Kidane, Brock A Arivett, Jacob Crigler, Eric J Vick, Anthony L Farone, Mary B Farone
Gardnerella vaginalis is a Gram-variable bacterium associated with bacterial vaginosis, a common vaginal inflammation in women of reproductive age. This study reports the whole-genome sequencing for the clinical isolate strain ATCC 49145. The draft genome is composed of 21 contigs containing 1,325 protein-coding sequences, 45 tRNAs and a single tmRNA (SsrA).
May 4, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28468531/prevalence-of-vaginitis-in-different-age-groups-among-females-in-greece
#16
Argiri Sianou, George Galyfos, Dimitra Moragianni, Stavroula Baka
Patients with vaginitis were classified into four groups: Group A (prepubertal under-aged females); Group B (pubertal under-aged females); Group C (reproductive age adult females); Group D (postmenopausal adult females). All vaginal specimens underwent microscopy, amine testing, Gram staining and culturing. Overall, 163 patients were included (33, 14, 81 and 35 patients, respectively). The most common infection was bacterial vaginosis (BV), followed by Ureaplasma infection, aerobic vaginitis (AV) and candidiasis...
May 4, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28388469/higher-prevalence-of-colonization-with-gardnerella-vaginalis-and-gram-negative-anaerobes-in-patients-with-recurrent-miscarriage-and-elevated-peripheral-natural-killer-cells
#17
R J Kuon, R Togawa, K Vomstein, M Weber, T Goeggl, T Strowitzki, U R Markert, S Zimmermann, V Daniel, A H Dalpke, B Toth
The role of vaginal infections in recurrent miscarriage (RM) is discussed controversially and screening is not recommended in international guidelines. Peripheral and uterine NK cells (pNK, uNK) play an important role in the establishment of a healthy pregnancy and are targets of immune diagnostics in RM patients. The aim of this study was to analyze the composition of the vaginal microbiota in RM patients and to correlate the findings to clinical characteristics as well as NK cell parameters. In total, n=243 RM patients with ≥3 consecutive miscarriages were recruited between 11/2011 and 03/2016...
March 30, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28358889/transient-microbiota-exposures-activate-dormant-escherichia-coli-infection-in-the-bladder-and-drive-severe-outcomes-of-recurrent-disease
#18
Nicole M Gilbert, Valerie P O'Brien, Amanda L Lewis
Pathogens often inhabit the body asymptomatically, emerging to cause disease in response to unknown triggers. In the bladder, latent intracellular Escherichia coli reservoirs are regarded as likely origins of recurrent urinary tract infection (rUTI), a problem affecting millions of women worldwide. However, clinically plausible triggers that activate these reservoirs are unknown. Clinical studies suggest that the composition of a woman's vaginal microbiota influences her susceptibility to rUTI, but the mechanisms behind these associations are unclear...
March 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28341009/gardnerella-vaginalis-diversity-and-ecology-in-relation-to-vaginal-symptoms
#19
John J Schellenberg, Mo H Patterson, Janet E Hill
Gardnerella vaginalis was first described in 1953, and subsequently identified as the causative agent of a cluster of vaginal symptoms currently known as vaginosis. Research has so far failed to confirm whether and by which mechanism G. vaginalis initiates vaginosis, with, consequently, poor diagnostics and treatment outcomes. Recent molecular analyses of protein-coding genes demonstrate that the taxon G. vaginalis consists of at least four distinct species. This development may represent a critical turning point in clarifying ecological interactions and virulence factors contributing to symptoms and/or sequelae of vaginosis...
March 22, 2017: Research in Microbiology
https://www.readbyqxmd.com/read/28339292/thymbra-capitata-essential-oil-as-potential-therapeutic-agent-against-gardnerella-vaginalis-biofilm-related-infections
#20
Daniela Machado, Carlos Gaspar, Ana Palmeira-de-Oliveira, Carlos Cavaleiro, Lígia Salgueiro, José Martinez-de-Oliveira, Nuno Cerca
AIM: To evaluate the antibacterial activity of Thymbra capitata essential oil and its main compound, carvacrol, against Gardnerella vaginalis grown planktonically and as biofilms, and its effect of vaginal lactobacilli. MATERIALS & METHODS: Minimal inhibitory concentration, minimal lethal concentration determination and flow cytometry analysis were used to assess the antibacterial effect against planktonic cells. Antibiofilm activity was measured through quantification of biomass and visualization of biofilm structure by confocal laser scanning microscopy...
April 2017: Future Microbiology
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