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Vaginal microbiome

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https://www.readbyqxmd.com/read/29340028/high-resolution-microbiome-profiling-uncovers-fusobacterium-nucleatum-lactobacillus-gasseri-johnsonii-and-lactobacillus-vaginalis-associated-to-oral-and-oropharyngeal-cancer-in-saliva-from-hpv-positive-and-hpv-negative-patients-treated-with-surgery-and-chemo
#1
Rafael Guerrero-Preston, James Robert White, Filipa Godoy-Vitorino, Arnold Rodríguez-Hilario, Kelvin Navarro, Herminio González, Christina Michailidi, Anne Jedlicka, Sierra Canapp, Jessica Bondy, Amanda Dziedzic, Barbara Mora-Lagos, Gustavo Rivera-Alvarez, Carmen Ili-Gangas, Priscilla Brebi-Mieville, William Westra, Wayne Koch, Hyunseok Kang, Luigi Marchionni, Young Kim, David Sidransky
Microbiome studies show altered microbiota in head and neck squamous cell carcinoma (HNSCC), both in terms of taxonomic composition and metabolic capacity. These studies utilized a traditional bioinformatics methodology, which allows for accurate taxonomic assignment down to the genus level, but cannot accurately resolve species level membership. We applied Resphera Insight, a high-resolution methodology for 16S rRNA taxonomic assignment that is able to provide species-level context in its assignments of 16S rRNA next generation sequencing (NGS) data...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29326217/draft-genome-sequences-of-bifidobacterium-strains-n4g05-and-n5g01-isolated-from-the-human-vaginal-microbiome
#2
Aline C Freitas, Janet E Hill
We report here the draft genome sequences of Bifidobacterium strains N4G05 and N5G01, isolated from the human vaginal microbiome. Genome sequences were obtained by de novo assembly from high-quality reads. Both strains were closely related to Bifidobacterium kashiwanohense based on barcode marker sequences and average nucleotide identity analysis.
January 11, 2018: Genome Announcements
https://www.readbyqxmd.com/read/29307753/tetraglochin-cristatum-britton-roth-a-medicinal-plant-from-the-argentinean-highlands-with-potential-use-in-vaginal-candidiasis
#3
María Alejandra Moreno, Susana Córdoba, Iris Catiana Zampini, María Rosa Alberto, M E Fatima Nader-Macias, Jorge Sayago, Alberto Burgos-Edwards, Guillermo Schmeda-Hirschmann, María Inés Isla
ETHNOPHARMACOLOGICAL RELEVANCE: The Argentinean medicinal plant Tetraglochin cristatum (Britton) Rothm is used in traditional medicine by inhabitants from Argentinean northwestern highlands (Puna) to treat candidiasis and as anti-inflammatory. AIM OF THE STUDY: To assess the potential of the crude drug as an anti-Candida agent with anti-inflammatory properties. The bioactivity and phytochemical composition of a dry extract of the plant was investigated. MATERIAL AND METHODS: A hydroalcoholic dry extract from T...
January 4, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29281632/the-vaginal-microbiome-and-sexually-transmitted-infections-are-interlinked-consequences-for-treatment-and-prevention
#4
Janneke H H M van de Wijgert
In a Perspective for our Collection on STI research, Janneke van de Wijgert discusses the latest on how the vaginal microbiota predisposes women to acquisition of STIs and discusses future potential for clinical intervention.
December 2017: PLoS Medicine
https://www.readbyqxmd.com/read/29259388/genital-tract-infections-in-an-isolated-community-100-women-of-the-pr%C3%A3-ncipe-island
#5
Pedro Vieira-Baptista, Svitrigaile Grinceviciene, Gert Bellen, Carlos Sousa, Conceição Saldanha, Davy Vanden Broeck, John-Paul Bogers, Gilbert Donders
Objective: To characterize the vaginal microbiome and the rate of sexually transmitted infections (STIs) in the women of Príncipe (São Tomé and Príncipe). Methods: Cross-sectional study of 100 consecutive women, invited for a free appointment and cervical cancer screening. A vaginal slide (wet mount microscopy) and a cervical sample (ThinPrep®) (Pap test, high risk human papillomavirus [HR-HPV], N. gonorrhea [NG], T. vaginalis [TV], and C. trachomatis [CT]) were obtained...
2017: Infectious Diseases in Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29242832/persistence-of-supplemented-bifidobacterium-longum-subsp-infantis-evc001-in-breastfed-infants
#6
Steven A Frese, Andra A Hutton, Lindsey N Contreras, Claire A Shaw, Michelle C Palumbo, Giorgio Casaburi, Gege Xu, Jasmine C C Davis, Carlito B Lebrilla, Bethany M Henrick, Samara L Freeman, Daniela Barile, J Bruce German, David A Mills, Jennifer T Smilowitz, Mark A Underwood
Attempts to alter intestinal dysbiosis via administration of probiotics have consistently shown that colonization with the administered microbes is transient. This study sought to determine whether provision of an initial course of Bifidobacterium longum subsp. infantis (B. infantis) would lead to persistent colonization of the probiotic organism in breastfed infants. Mothers intending to breastfeed were recruited and provided with lactation support. One group of mothers fed B. infantis EVC001 to their infants from day 7 to day 28 of life (n = 34), and the second group did not administer any probiotic (n = 32)...
November 2017: MSphere
https://www.readbyqxmd.com/read/29210152/hbahp-25-attenuates-hiv-1-gp120-mediated-inflammation-and-barrier-dysfunction
#7
T Bashir, Kvr Reddy
OBJECTIVES: Development of HbAHP-25, a peptide that prevents HIV-1 entry into cells by blocking gp120-CD4 interaction, as a topical anti-HIV drug, necessitates that it is first tested for toxic or abrasive effects on genital epithelial cells and also on the vaginal microbiome. The present study was, therefore, undertaken to investigate whether: (1) HbAHP-25 has any adverse effect on growth and membrane integrity of various cell lines, and (2) HbAHP-25 neutralizes gp120 mediated insults on genital epithelial cells...
December 6, 2017: HIV Medicine
https://www.readbyqxmd.com/read/29206649/the-importance-of-the-microbiome-in-pediatrics-and-pediatric-infectious-diseases
#8
Thaidra Gaufin, Nicole H Tobin, Grace M Aldrovandi
PURPOSE OF REVIEW: Emerging research on the pediatric microbiome implicates the importance of the microbiome on the development of the immune system, nervous system, and growth. Changes to the microbiome during infancy are associated with the development of chronic illnesses such as asthma and inflammatory bowel disease. Additionally, the microbiome provides protection against certain pathogens, affects vaccine responses, and alters drug metabolism. This review highlights what is known about the microbiome, the establishment of a healthy microbiome and the significance that changes to the microbiome composition have on growth and health of children and adolescents...
December 4, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/29184093/intrapartum-antibiotics-for-gbs-prophylaxis-alter-colonization-patterns-in-the-early-infant-gut-microbiome-of-low-risk-infants
#9
Jennifer C Stearns, Julia Simioni, Elizabeth Gunn, Helen McDonald, Alison C Holloway, Lehana Thabane, Andrea Mousseau, Jonathan D Schertzer, Elyanne M Ratcliffe, Laura Rossi, Michael G Surette, Katherine M Morrison, Eileen K Hutton
Early life microbial colonization and succession is critically important to healthy development with impacts on metabolic and immunologic processes throughout life. A longitudinal prospective cohort was recruited from midwifery practices to include infants born at full term gestation to women with uncomplicated pregnancies. Here we compare bacterial community succession in infants born vaginally, with no exposure to antibiotics (n = 53), with infants who were exposed to intrapartum antibiotic prophylaxis (IAP) for Group B Streptococcus (GBS; n = 14), and infants born by C-section (n = 7)...
November 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29179694/correction-to-protocol-for-the-emory-university-african-american-vaginal-oral-and-gut-microbiome-in-pregnancy-cohort-study
#10
Elizabeth J Corwin, Carol J Hogue, Bradley Pearce, Cherie C Hill, Timothy D Read, Jennifer Mulle, Anne L Dunlop
Following publication of the original article [1], the authors pointed out that the Methods included one step that is no longer necessary but which was inadvertently carried over from an earlier protocol.
November 27, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29177026/2-way-k-means-as-a-model-for-microbiome-samples
#11
Weston J Jackson, Ipsita Agarwal, Itsik Pe'er
Motivation. Microbiome sequencing allows defining clusters of samples with shared composition. However, this paradigm poorly accounts for samples whose composition is a mixture of cluster-characterizing ones and which therefore lie in between them in the cluster space. This paper addresses unsupervised learning of 2-way clusters. It defines a mixture model that allows 2-way cluster assignment and describes a variant of generalized k-means for learning such a model. We demonstrate applicability to microbial 16S rDNA sequencing data from the Human Vaginal Microbiome Project...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29170495/first-trimester-vaginal-microbiome-diversity-a-potential-indicator-of-preterm-delivery-risk
#12
Mohammed Monzoorul Haque, Mitali Merchant, Pinna Nishal Kumar, Anirban Dutta, Sharmila S Mande
Preterm birth is a leading cause of global neonate mortality. Hospitalization costs associated with preterm deliveries present a huge economic burden. Existing physical/biochemical markers for predicting preterm birth risk are mostly suited for application at mid/late pregnancy stages, thereby leaving very short time (between diagnosis and delivery) for adopting appropriate intervention strategies. Recent studies indicating correlations between pre/full-term delivery and the composition of vaginal microbiota in pregnant women have opened new diagnostic possibilities...
November 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29143101/candidate-biomarkers-in-the-cervical-vaginal-fluid-for-the-self-diagnosis-of-cervical-precancer
#13
REVIEW
Xaveer Van Ostade, Martin Dom, Wiebren Tjalma, Geert Van Raemdonck
PURPOSE: Despite improvement in vaccines against human papilloma virus (HPV), the causative agent of cervical cancer, screening women for cervical precancer will remain indispensable in the coming 30-40 years. A simple test that could be performed at home or at a doctor's practice and that informs the woman whether she is at risk would significantly help make a broader group of patients who aware that they need medical treatment. Cervical vaginal fluid (CVF) is a body fluid that is very well suited for such a test...
November 15, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29141044/high-dimensional-linear-state-space-models-for-dynamic-microbial-interaction-networks
#14
Iris Chen, Yogeshwar D Kelkar, Yu Gu, Jie Zhou, Xing Qiu, Hulin Wu
Medical researchers are increasingly interested in knowing how the complex community of micro-organisms living on human body impacts human health. Key to this is to understand how the microbes interact with each other. Time-course studies on human microbiome indicate that the composition of microbiome changes over short time periods, primarily as a consequence of synergistic and antagonistic interactions of the members of the microbiome with each other and with the environment. Knowledge of the abundance of bacteria-which are the predominant members of the human microbiome-in such time-course studies along with appropriate mathematical models will allow us to identify key dynamic interaction networks within the microbiome...
2017: PloS One
https://www.readbyqxmd.com/read/29124056/microbial-therapeutics-designed-for-infant-health
#15
REVIEW
Claire Watkins, Catherine Stanton, C Anthony Ryan, R Paul Ross
Acknowledgment of the gut microbiome as a vital asset to health has led to multiple studies attempting to elucidate its mechanisms of action. During the first year of life, many factors can cause fluctuation in the developing gut microbiome. Host genetics, maternal health status, mode of delivery, gestational age, feeding regime, and perinatal antibiotic usage, are known factors which can influence the development of the infant gut microbiome. Thus, the microbiome of vaginally born, exclusively breastfed infants at term, with no previous exposure to antibiotics, either directly or indirectly from the mother, is to be considered the "gold standard...
2017: Frontiers in Nutrition
https://www.readbyqxmd.com/read/29069100/gut-microbiome-of-mothers-delivering-prematurely-shows-reduced-diversity-and-lower-relative-abundance-of-bifidobacterium-and-streptococcus
#16
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/29059077/the-microbiome-and-hiv-prevention-strategies-in-women
#17
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/29057083/low-level-genital-hiv-shedding-in-thai-hiv-infected-women-with-suppressed-plasma-viral-load-after-menopause-a-longitudinal-study
#18
EDITORIAL
Nadia Kancheva Landolt, Tanya Do, Naruporn Kasipong, Rosalin Kriengsinyot, Sasiwimol Ubolyam, Apicha Mahanontharit, Tippawan Pankam, Tanakorn Apornpong, Anchalee Avihingsanon, Jintanat Ananworanich, Nittaya Phanuphak, Surasith Chaithongwongwatthana
OBJECTIVES: First, to evaluate the longitudinal changes of HIV RNA in genital secretions in HIV-positive women with plasma HIV RNA <50 copies/mL before and after the onset of menopause. Second, to assess inflammatory markers and prevalence of comorbidities after the onset of menopause. METHODS: This was a prospective observational study with two time points. HIV RNA in genital secretions (GVL) was measured in 15 HIV-positive menopausal women (second time point)...
October 1, 2017: Journal of Virus Eradication
https://www.readbyqxmd.com/read/29043070/bacterial%C3%A2-vaginosis
#19
REVIEW
Phillip Hay
Bacterial vaginosis is the most prevalent cause of abnormal vaginal discharge in women of childbearing age. It can have a major impact on quality of life and psychological wellbeing if frequently recurrent and strongly symptomatic. The use of molecular techniques to study the vaginal microbiome is increasing our understanding of the dynamic changes in flora that occur in health and disease. It might soon be possible to separate Gardnerella into different pathogenic and non-pathogenic species. Many groups are studying compounds that can disrupt the biofilm which is dominated by Gardnerella and Atopobium vaginae...
2017: F1000Research
https://www.readbyqxmd.com/read/29042534/the-microbiota-continuum-along-the-female-reproductive-tract-and-its-relation-to-uterine-related-diseases
#20
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
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