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Vaginal microbiota

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https://www.readbyqxmd.com/read/29142203/mode-of-delivery-and-child-and-adolescent-psychological-well-being-evidence-from-hong-kong-s-children-of-1997-birth-cohort
#1
Cherry Y Leung, Gabriel M Leung, C Mary Schooling
Mode of delivery (vaginal or cesarean section) is thought to affect gut microbiota, which in turn may affect psychological well-being. As such, mode of delivery is potentially a modifiable factor for psychological well-being. Here we examined the association of mode of delivery with child and adolescent psychological well-being. We used multivariable linear regression in a population-representative Hong Kong Chinese birth cohort, "Children of 1997," to examine the adjusted associations of mode of delivery with behavioral problems assessed from parent-reported Rutter score at ~7 (n = 6294) and ~11 years (n = 5598), self-esteem assessed from self-reported Culture-Free Self-Esteem Inventory score at ~11 years (n = 6937) and depressive symptoms assessed from self-reported Patient Health Questionnaire-9 score at ~13 years (n = 5797)...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29130974/atypical-squamous-cells-in-liquid-based-cervical-cytology-microbiology-inflammatory-infiltrate-and-human-papillomavirus-dna-testing
#2
Geilson Gomes de Oliveira, Renata Mirian Nunes Eleutério, Ana Katherine Silveira Gonçalves, Paulo César Giraldo, José Eleutério
OBJECTIVE: The aim of this study was to assess the correlation between atypical squamous cells (ASC) and inflammatory infiltrate and vaginal microbiota using cervical liquid-based cytological (SurePath®) and high-risk human papillomavirus (HR-HPV) tests. STUDY DESIGN: A cross-sectional study was conducted using a 6-year database from a laboratory in Fortaleza (Brazil). Files from 1,346 ASC cases were divided into subgroups and results concerning inflammation and vaginal microorganisms diagnosed by cytology were compared with HR-HPV test results...
November 8, 2017: Acta Cytologica
https://www.readbyqxmd.com/read/29129498/a-novel-double-layer-mucoadhesive-tablet-containing-probiotic-strain-for-vaginal-administration-design-development-and-technological-evaluation
#3
María Teresa Sánchez, María Adolfina Ruiz, Herminia Castán, María Encarnación Morales
Vulvovaginal candidosis caused by Candida spp. is the most prevalent vaginal infection in Europe and the second one in EE.UU, so it has become a major female concern. Probiotics bacteria have been proposed as an alternative treatment with the aim of avoiding the adverse effects associated with conventional therapies including antibiotics and other aggressive drugs for the vaginal mucosa and microbiota. The purpose of this work was to design and develop a novel vaginal tablet that contained Lactobacillus spp...
November 10, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29127989/antimicrobial-resistant-escherichia-coli-in-the-reproductive-tract-microbiota-of-cows-and-sows
#4
Andrea Torres Luque, Candelaria Gonzalez Moreno, Sergio E Pasteris, José A Orden, Ricardo de la Fuente, María C Otero
Escherichia coli is a natural colonizer of the urogenital mucosa of healthy females; however it is one of the pathogens associated to reproductive failures in cows and sows. A better knowledge about the characteristics of native E. coli will allow us to differentiate them from pathogenic strains. Ninety autochthonous isolates from the reproductive tract of sows and cows were characterized to determine the phylogenetic profile, antibiotic resistance and virulence factors; also, comparisons between different breeding systems were performed...
December 2017: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/29095928/association-of-high-risk-sexual-behaviour-with-diversity-of-the-vaginal-microbiota-and-abundance-of-lactobacillus
#5
Jocelyn M Wessels, Julie Lajoie, Danielle Vitali, Kenneth Omollo, Joshua Kimani, Julius Oyugi, Juliana Cheruiyot, Makubo Kimani, John N Mungai, Maureen Akolo, Jennifer C Stearns, Michael G Surette, Keith R Fowke, Charu Kaushic
OBJECTIVE: To compare the vaginal microbiota of women engaged in high-risk sexual behaviour (sex work) with women who are not engaged in high-risk sexual behaviour. Diverse vaginal microbiota, low in Lactobacillus species, like those in bacterial vaginosis (BV), are associated with increased prevalence of sexually transmitted infections (STIs) and human immunodeficiency virus (HIV) acquisition. Although high-risk sexual behaviour increases risk for STIs, the vaginal microbiota of sex workers is understudied...
2017: PloS One
https://www.readbyqxmd.com/read/29069100/gut-microbiome-of-mothers-delivering-prematurely-shows-reduced-diversity-and-lower-relative-abundance-of-bifidobacterium-and-streptococcus
#6
Cecilie Dahl, Maggie Stanislawski, Nina Iszatt, Siddhartha Mandal, Catherine Lozupone, Jose C Clemente, Rob Knight, Hein Stigum, Merete Eggesbø
OBJECTIVE: Preterm birth is the main reason for neonatal deaths worldwide. We investigate whether maternal gut microbiota may play a previously overlooked role. METHODS: The Norwegian Microbiota Study (NoMIC) is a case control study on preterm birth (<259 days of gestation, calculated primarily based on the last menstrual period), including two consecutively born term infants per infant born prematurely. Eligible mothers were fluent in Norwegian and recruited from the maternity ward at a county hospital in Eastern Norway in the period 2002-2005...
2017: PloS One
https://www.readbyqxmd.com/read/29063878/recurrent-urinary-tract-infections-in-women-how-promising-is-the-use-of-probiotics
#7
REVIEW
Varsha Gupta, Deepika Nag, Pratibha Garg
Urinary tract infections (UTIs) currently rank amongst the most prevalent bacterial infections, representing a major health hazard. UTIs in females usually start as vaginal infections and ascend to the urethra and bladder. Recurrent UTIs (rUTIs) can be defined as at least three episodes of UTI in 1 year or two episodes in 6 months. Various antibiotics have been the mainstay of therapy in ameliorating the incidence of UTIs, but recurrent infections continue to afflict many women. It necessitates the exploitation of alternative antimicrobial therapy...
July 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29059077/the-microbiome-and-hiv-prevention-strategies-in-women
#8
Salim S Abdool Karim, Jo-Ann S Passmore, Cheryl Baxter
PURPOSE OF REVIEW: HIV prevention approaches that women can use and control are a priority. Results from topical and oral preexposure prophylaxis (PrEP) HIV prevention trials have produced inconsistent results in women. One of the main behavioural factors impacting effectiveness of PrEP has been suboptimal adherence. In this review, we examine biological factors that modulate topical PrEP efficacy, with particular focus on the vaginal microbiome. RECENT FINDINGS: Genital inflammation is an independent risk factor for HIV acquisition in women...
October 20, 2017: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/29042534/the-microbiota-continuum-along-the-female-reproductive-tract-and-its-relation-to-uterine-related-diseases
#9
Chen Chen, Xiaolei Song, Weixia Wei, Huanzi Zhong, Juanjuan Dai, Zhou Lan, Fei Li, Xinlei Yu, Qiang Feng, Zirong Wang, Hailiang Xie, Xiaomin Chen, Chunwei Zeng, Bo Wen, Liping Zeng, Hui Du, Huiru Tang, Changlu Xu, Yan Xia, Huihua Xia, Huanming Yang, Jian Wang, Jun Wang, Lise Madsen, Susanne Brix, Karsten Kristiansen, Xun Xu, Junhua Li, Ruifang Wu, Huijue Jia
Reports on bacteria detected in maternal fluids during pregnancy are typically associated with adverse consequences, and whether the female reproductive tract harbours distinct microbial communities beyond the vagina has been a matter of debate. Here we systematically sample the microbiota within the female reproductive tract in 110 women of reproductive age, and examine the nature of colonisation by 16S rRNA gene amplicon sequencing and cultivation. We find distinct microbial communities in cervical canal, uterus, fallopian tubes and peritoneal fluid, differing from that of the vagina...
October 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/29033921/influence-of-oral-and-gut-microbiota-in-the-health-of-menopausal-women
#10
REVIEW
Angélica T Vieira, Paula M Castelo, Daniel A Ribeiro, Caroline M Ferreira
Sex differences in gut microbiota are acknowledged, and evidence suggests that gut microbiota may have a role in higher incidence and/or severity of autoimmune diseases in females. Additionally, it has been suggested that oral, vaginal, and gut microbiota composition can be regulated by estrogen levels. The association of vaginal microbiota with vulvovaginal atrophy at menopause is well described in the literature. However, the relevance of oral and gut microbiota modulation in the immune system during estrogen deficiency and its effect on inflammatory diseases is not well explored...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29030152/identification-of-microbiota-dynamics-using-robust-parameter-estimation-methods
#11
Matthias Chung, Justin Krueger, Mihai Pop
The compositions of in-host microbial communities (microbiota) play a significant role in host health, and a better understanding of the microbiota's role in a host's transition from health to disease or vice versa could lead to novel medical treatments. One of the first steps toward this understanding is modeling interaction dynamics of the microbiota, which can be exceedingly challenging given the complexity of the dynamics and difficulties in collecting sufficient data. Methods such as principal differential analysis, dynamic flux estimation, and others have been developed to overcome these challenges...
October 10, 2017: Mathematical Biosciences
https://www.readbyqxmd.com/read/29027368/expression-of-fluorescent-proteins-in-lactobacillus-rhamnosus-to-study-host-microbe-and-microbe-microbe-interactions
#12
Irina Spacova, Elke Lievens, Tine Verhoeven, Hans Steenackers, Jos Vanderleyden, Sarah Lebeer, Mariya I Petrova
Probiotic Lactobacillus strains are widely used to benefit human and animal health, although the exact mechanisms behind their interactions with the host and the microbiota are largely unknown. Fluorescent tagging of live probiotic cells is an important tool to unravel their modes of action. In this study, the implementation of different heterologously expressed fluorescent proteins for the labelling of the model probiotic strains Lactobacillus rhamnosusGG (gastrointestinal) and Lactobacillus rhamnosusGR-1 (vaginal) was explored...
October 13, 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/29026883/increased-weight-gain-by-c-section-functional-significance-of-the-primordial-microbiome
#13
Keith A Martinez, Joseph C Devlin, Corey R Lacher, Yue Yin, Yi Cai, Jincheng Wang, Maria G Dominguez-Bello
Epidemiological evidence supports a direct association between early microbiota impact-including C-section-and obesity. We performed antibiotic-free, fostered C-sections and determined the impact on the early microbiota and body weight during development. Mice in the C-section group gained more body mass after weaning, with a stronger phenotype in females. C-section-born mice lacked the dynamic developmental gut microbiota changes observed in control mice. The results demonstrate a causal relationship between C-section and increased body weight, supporting the involvement of maternal vaginal bacteria in normal metabolic development...
October 2017: Science Advances
https://www.readbyqxmd.com/read/29022384/does-the-maternal-vaginal-microbiota-play-a-role-in-seeding-the-microbiota-of-neonatal-gut-and-nose
#14
O Sakwinska, F Foata, B Berger, H Brüssow, S Combremont, A Mercenier, S Dogra, S-E Soh, J C K Yen, G Y S Heong, Y S Lee, F Yap, M J Meaney, Y-S Chong, K M Godfrey, J D Holbrook
The acquisition and early maturation of infant microbiota is not well understood despite its likely influence on later health. We investigated the contribution of the maternal microbiota to the microbiota of infant gut and nose in the context of mode of delivery and feeding. Using 16S rRNA sequencing and specific qPCR, we profiled microbiota of 42 mother-infant pairs from the GUSTO birth cohort, at body sites including maternal vagina, rectum and skin; and infant stool and nose. In our study, overlap between maternal vaginal microbiota and infant faecal microbiota was minimal, while the similarity between maternal rectal microbiota and infant microbiota was more pronounced...
October 12, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/29018787/cesarean-section-formula-feeding-and-infant-antibiotic-exposure-separate-and-combined-impacts-on-gut-microbial-changes-in-later-infancy
#15
Farzana Yasmin, Hein Min Tun, Theodore Brian Konya, David S Guttman, Radha S Chari, Catherine J Field, Allan B Becker, Piush J Mandhane, Stuart E Turvey, Padmaja Subbarao, Malcolm R Sears, James A Scott, Irina Dinu, Anita L Kozyrskyj
Established during infancy, our complex gut microbial community is shaped by medical interventions and societal preferences, such as cesarean section, formula feeding, and antibiotic use. We undertook this study to apply the significance analysis of microarrays (SAM) method to quantify changes in gut microbial composition during later infancy following the most common birth and postnatal exposures affecting infant gut microbial composition. Gut microbiota of 166 full-term infants in the Canadian Healthy Infant Longitudinal Development birth cohort were profiled using 16S high-throughput gene sequencing...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28994162/effect-of-probiotics-on-perinatal-outcome-in-patients-at-high-risk-of-preterm-birth
#16
Nami Kirihara, Masato Kamitomo, Tatsunori Tabira, Takashi Hashimoto, Hiroko Taniguchi, Takatsugu Maeda
AIM: Recent reports have shown lower levels of Clostridium and higher levels of Lactobacillales in the intestinal microbiota in preterm birth patients compared to term birth patients. However, the influence of probiotics on perinatal status has not been elucidated. The aim of our study was to evaluate the effects of probiotics on perinatal outcomes. METHODS: We retrospectively evaluated the effects of oral probiotics on perinatal outcome in patients at high risk of preterm birth...
October 10, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28959181/bacterial-biota-of-women-with-bacterial-vaginosis-treated-with-lactoferrin-an-open-prospective-randomized-trial
#17
Alessandra Pino, Giuliana Giunta, Cinzia L Randazzo, Salvatore Caruso, Cinzia Caggia, Antonio Cianci
Background: Bacterial vaginosis is the most frequent condition associated to the vaginal microbiota imbalance, affecting about the 40-50% of women in the world. Even if antibiotics are effcetive for bacterial vaginosis treatment a long-term recurrence rates, higher than 70%, is recorded. Lactoferrin is an iron-binding glycoprotein with bacteriostatic and bactericidal properties. It owns the ability to protect the host against infection, by binding and regulating the iron needed for the bacterial proliferation...
2017: Microbial Ecology in Health and Disease
https://www.readbyqxmd.com/read/28947665/lactobacillus-iners-dominated-vaginal-microbiota-is-associated-with-increased-susceptibility-to-chlamydia-trachomatis-infection-in-dutch-women-a-case-control-study
#18
Robin van Houdt, Bing Ma, Sylvia M Bruisten, Arjen G C L Speksnijder, Jacques Ravel, Henry J C de Vries
INTRODUCTION: This prospective study aimed to study the composition and structure of the vaginal microbiota prior to Chlamydia trachomatis infection. METHODS: A nested case-control study was performed in 122 women, half of which acquired C. trachomatis within a year after their first visit. At the first visit, the composition and structure of vaginal microbial communities were analysed using 16S rRNA sequencing in the context of the sociodemographic and sexual risk behaviour information using logistic regression...
September 25, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28946864/impact-of-delivery-mode-on-the-colostrum-microbiota-composition
#19
Marco Toscano, Roberta De Grandi, Diego Giampietro Peroni, Enzo Grossi, Valentina Facchin, Pasquale Comberiati, Lorenzo Drago
BACKGROUND: Breast milk is a rich nutrient with a temporally dynamic nature. In particular, numerous alterations in the nutritional, immunological and microbiological content occur during the transition from colostrum to mature milk. The objective of our study was to evaluate the potential impact of delivery mode on the microbiota of colostrum, at both the quantitative and qualitative levels (bacterial abundance and microbiota network). METHODS: Twenty-nine Italian mothers (15 vaginal deliveries vs 14 Cesarean sections) were enrolled in the study...
September 25, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28936424/acid-stress-response-mechanisms-of-group-b-streptococci
#20
REVIEW
Sarah Shabayek, Barbara Spellerberg
Group B streptococcus (GBS) is a leading cause of neonatal mortality and morbidity in the United States and Europe. It is part of the vaginal microbiota in up to 30% of pregnant women and can be passed on to the newborn through perinatal transmission. GBS has the ability to survive in multiple different host niches. The pathophysiology of this bacterium reveals an outstanding ability to withstand varying pH fluctuations of the surrounding environments inside the human host. GBS host pathogen interations include colonization of the acidic vaginal mucosa, invasion of the neutral human blood or amniotic fluid, breaching of the blood brain barrier as well as survival within the acidic phagolysosomal compartment of macrophages...
2017: Frontiers in Cellular and Infection Microbiology
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