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Pregnant colonization

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https://www.readbyqxmd.com/read/28077143/pregnant-women-carrying-microcephaly-foetuses-and-zika-virus-contain-potentially-pathogenic-microbes-and-parasites-in-their-amniotic-fluid
#1
Diogo Antonio Tschoeke, Louisi Souza de Oliveira, Luciana Leomil, Amilcar Tanuri, Fabiano Lopes Thompson
BACKGROUND: Microcephaly has become a major public health problem in Brazil. The total number of newborns with microcephaly was reported to be >4000 in June 2016. Studies suggest that Zika Virus is a major cause of new microcephaly cases in Brazil. Inside the uterus, the foetus is surrounded by the Amniotic Fluid, a proximal fluid that contains foetal and maternal cells as well as microorganisms and where Zika Virus was already found. CASE PRESENTATION: A previous study reported the presence of the Zika Virus in the amniotic fluid (collected in the 28th gestational week) of two pregnant women carrying microcephaly foetuses in Brazil...
January 11, 2017: BMC Medical Genomics
https://www.readbyqxmd.com/read/28063544/the-prevention-of-early-onset-neonatal-group-b-streptococcal-disease
#2
Deborah Money, Victoria M Allen
OBJECTIVE: To review the evidence in the literature and to provide recommendations on the management of pregnant women in labour for the prevention of early-onset neonatal group B streptococcal disease. The key revisions in this updated guideline include changed recommendations for regimens for antibiotic prophylaxis, susceptibility testing, and management of women with pre-labour rupture of membranes. OUTCOMES: Maternal outcomes evaluated included exposure to antibiotics in pregnancy and labour and complications related to antibiotic use...
December 2016: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28050621/-a-two-faced-vitamin-folic-acid-prevention-or-promotion-of-colon-cancer
#3
Anke Weißenborn, Anke Ehlers, Karen-I Hirsch-Ernst, Alfonso Lampen, Birgit Niemann
In the late 1930s, it was discovered that liver and yeast extracts can be used to correct certain cases of megaloblastic anemia in pregnancy. The factor responsible for this was isolated from spinach leaves in the 1940s, and referred to as folate, a term derived from the Latin word folium for leaf. Folate is considered an essential nutrient for human beings. Folic acid, the synthetic form of the vitamin, is used in dietary supplements, medicines and fortified foods. Since the 1980s, it has been recommended that women who plan to become pregnant and pregnant women during the first trimester of pregnancy take folic acid supplements...
January 3, 2017: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
https://www.readbyqxmd.com/read/28027278/group-b-streptococcal-colonization-among-pregnant-women-in-delhi-india
#4
Manu Chaudhary, Marcia A Rench, Carol J Baker, Pushpa Singh, Charoo Hans, Morven S Edwards
BACKGROUND: Little is known regarding maternal group B streptococcal (GBS) colonization prevalence and capsular (CPS) serotype distribution among pregnant women in India. The objective of this prospective cohort study was to determine GBS recto-vaginal colonization prevalence in pregnant women at Dr. Ram Manohar Lohia Hospital in Delhi, India. METHODS: Literature review identified reports from India assessing GBS colonization prevalence in pregnant women. Rectal and vaginal swabs were inoculated into Strep B Carrot Broth™ and subcultured onto GBS Detect™ plates...
December 23, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28017431/who-consultation-on-group-b-streptococcus-vaccine-development-report-from-a-meeting-held-on-27-28-april-2016
#5
Miwako Kobayashi, Stephanie J Schrag, Mark R Alderson, Shabir A Madhi, Carol J Baker, Ajoke Sobanjo-Ter Meulen, David C Kaslow, Peter G Smith, Vasee S Moorthy, Johan Vekemans
Globally, group B Streptococcus (GBS) remains a leading cause of sepsis and meningitis in infants in the first 90days of life. Intrapartum antibiotic prophylaxis (IAP) for women at increased risk of transmitting GBS to their newborns has been effective in reducing part, but not all, of the GBS disease burden in many high income countries (HICs). In low- and middle-income countries (LMICs), IAP use is low. Immunization of pregnant women with a GBS vaccine represents an alternative strategy to protecting newborns and young infants, through transplacental antibody transfer and potentially by reducing new vaginal colonization...
December 22, 2016: Vaccine
https://www.readbyqxmd.com/read/27973991/neonatal-protection-and-preterm-birth-reduction-following-maternal-group-b-streptococcus-vaccination-in-a-mouse-model
#6
R Bernardini, R Aufieri, A Detcheva, S Recchia, R Cicconi, M Amicosante, C Montesano, P Rossi, H K Tchidjou, B Petrunov, G Orefici, M Mattei
PURPOSE: Evaluate effects of maternal immunization in a mouse model of Group B Streptococcus (GBS) vaginal colonization using clinical isolates. MATERIALS AND METHODS: Female pregnant mice were immunized with heat-killed GBS 21 days before pregnancy and were inoculated intravaginally with GBS cultures (5 × 10(7) CFU twice a day for three days) from the 16th day of pregnancy. Gestation period and mice survival were monitored. Maternal anti-GBS IgG levels have been determined by ELISA analysis in vaccinated, unvaccinated mothers and newborns...
December 14, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27936166/increased-age-but-not-parity-predisposes-to-higher-bacteriuria-burdens-due-to-streptococcus-urinary-tract-infection-and-influences-bladder-cytokine-responses-which-develop-independent-of-tissue-bacterial-loads
#7
Matthew J Sullivan, Alison J Carey, Sophie Y Leclercq, Chee K Tan, Glen C Ulett
Streptococcus agalactiae causes urinary tract infection (UTI) in pregnant adults, non-pregnant adults, immune-compromised individuals and the elderly. The pathogenesis of S. agalactiae UTI in distinct patient populations is poorly understood. In this study, we used murine models of UTI incorporating young mice, aged and dam mice to show that uropathogenic S. agalactiae causes bacteriuria at significantly higher levels in aged mice compared to young mice and this occurs coincident with equivalent levels of bladder tissue colonisation at 24 h post-infection (p...
2016: PloS One
https://www.readbyqxmd.com/read/27917879/colonic-luminal-microbiota-and-bacterial-metabolite-composition-in-pregnant-huanjiang-mini-pigs-effects-of-food-composition-at-different-times-of-pregnancy
#8
Xiang-Feng Kong, Yu-Jiao Ji, Hua-Wei Li, Qian Zhu, F Blachier, Mei-Mei Geng, Wen Chen, Yu-Long Yin
The gut harbours diverse and complex microbiota, which influence body health including nutrient metabolism, immune development, and protection from pathogens. Pregnancy is associated with immune and metabolic changes that might be related to microbiota compositional dynamics. We therefore investigated the colonic luminal bacteria community in Huanjiang mini-pigs fed diets with different nutrient levels from the first to third trimester of pregnancy. The concentrations of intestinal metabolites including short-chain fat acids, NH3-N, indole, skatole, and bioamines were also determined...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27911391/a-murine-model-of-group-b-streptococcus-vaginal-colonization
#9
Kathryn A Patras, Kelly S Doran
Streptococcus agalactiae (group B Streptococcus, GBS), is a Gram-positive, asymptomatic colonizer of the human gastrointestinal tract and vaginal tract of 10 - 30% of adults. In immune-compromised individuals, including neonates, pregnant women, and the elderly, GBS may switch to an invasive pathogen causing sepsis, arthritis, pneumonia, and meningitis. Because GBS is a leading bacterial pathogen of neonates, current prophylaxis is comprised of late gestation screening for GBS vaginal colonization and subsequent peripartum antibiotic treatment of GBS-positive mothers...
November 16, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27899925/increased-risk-of-group-b-streptococcus-invasive-infection-in-hiv-exposed-but-uninfected-infants-a-review-of-the-evidence-and-possible-mechanisms
#10
REVIEW
Nicolas Dauby, Mustapha Chamekh, Pierrette Melin, Amy L Slogrove, Tessa Goetghebuer
Group B Streptococcus (GBS) is a major cause of neonatal sepsis and mortality worldwide. Studies from both developed and developing countries have shown that HIV-exposed but uninfected (HEU) infants are at increased risk of infectious morbidity, as compared to HIV-unexposed uninfected infants (HUU). A higher susceptibility to GBS infections has been reported in HEU infants, particularly late-onset diseases and more severe manifestations of GBS diseases. We review here the possible explanations for increased susceptibility to GBS infection...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27879969/factors-associated-with-choice-of-approach-for-group-b-streptococcus-screening
#11
H Sefty, A Klivitsky, M Bromberg, R Dichtiar, M Ben Ami, T Shohat, A Glatman-Freedman
BACKGROUND: The crude rate of early-onset Group B streptococcus disease (EOGBS) in Israel has been consistently under 0.5 for 1000 live births for the past 8 years. The Israeli Ministry of Health has adapted the risk factor based approach for preventing EOGBS and universal bacteriological screening for GBS is not recommended. In spite of this policy, there are indications that many pregnant women in Israel undergo bacteriological screening for GBS. The objective of this study is to assess the rate and characteristics of pregnant women who undergo screening for group B streptococcus (GBS) colonization in Israel...
2016: Israel Journal of Health Policy Research
https://www.readbyqxmd.com/read/27875686/early-onset-neonatal-sepsis-and-the-implementation-of-group-b-streptococcus-prophylaxis-in-a-brazilian-maternity-hospital-a-descriptive-study
#12
Felipe Teixeira de Mello Freitas, Gustavo Adolfo Sierra Romero
OBJECTIVES: To describe early-onset neonatal sepsis (EOS) epidemiology in a public maternity hospital in Brasilia, Brazil. METHODS: We defined EOS as a positive blood culture result obtained from infants aged ≤72 hours of life plus treatment with antibiotic therapy for ≥5 days. Incidence was calculated based on the number of cases and total live births (LB). This is a descriptive study comparing the period of 2012-2013 with the period of 2014-September 2015, before and after implementation of antibiotic prophylaxis during labor for group B streptococcus (GBS) prevention, respectively...
November 19, 2016: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27852675/serotype-distribution-population-structure-and-antimicrobial-resistance-of-group-b-streptococcus-strains-recovered-from-colonized-pregnant-women
#13
Sarah Teatero, Patricia Ferrieri, Irene Martin, Walter Demczuk, Allison McGeer, Nahuel Fittipaldi
Using serotyping, multilocus sequence typing and whole-genome sequencing (WGS) of selected strains, we studied the population structure of 102 group B Streptococcus isolates prospectively sampled in 2014 from vaginal/rectal swabs of healthy pregnant women in metropolitan Toronto, Canada. We also determined the susceptibilities of all colonizing isolates to penicillin, erythromycin, clindamycin, tetracycline and other antimicrobial agents. Overall, we observed a high rate of tetracycline resistance (89%) among colonizing GBS...
November 16, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27846056/mother-to-child-transmission-of-kpc-carbapenemase-producing-klebsiella-pneumoniae-at-birth
#14
Paolo Bonfanti, Roberto Bellù, Luigi Principe, Ilaria Caramma, Manuela Condò, Tommaso Giani, Gian Maria Rossolini, Francesco Luzzaro
We report on a mother-to-child transmission of KPC carbapenemase-producing Klebsiella pneumoniae at birth followed by subsequent cases in the NICU. Molecular analysis of isolates showed production of KPC-3 enzyme. The only potential risk factor identified for the mother was previous activity as a caregiver. Present findings suggest consideration of pro-active surveillance in pregnant women with risk factors for colonization.
November 11, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27832763/a-comparison-of-intestinal-microbiota-in-a-population-of-low-risk-infants-exposed-and-not-exposed-to-intrapartum-antibiotics-the-baby-microbiota-of-the-intestine-cohort-study-protocol
#15
Julia Simioni, Eileen K Hutton, Elizabeth Gunn, Alison C Holloway, Jennifer C Stearns, Helen McDonald, Andrea Mousseau, Jonathan D Schertzer, Elyanne M Ratcliffe, Lehana Thabane, Michael G Surette, Katherine M Morrison
BACKGROUND: The intestinal microbiota influences metabolic, nutritional, and immunologic processes and has been associated with a broad range of adverse health outcomes including asthma, obesity and Type 2 diabetes. Early life exposures may alter the course of gut microbial colonization leading to differences in metabolic and immune regulation throughout life. Although approximately 50 % of low-risk full-term infants born in Canada are exposed to intrapartum antibiotics, little is known about the influence of this common prophylactic treatment on the developing neonatal intestinal microbiota...
November 10, 2016: BMC Pediatrics
https://www.readbyqxmd.com/read/27828624/antimicrobial-susceptibility-of-streptococcus-agalactiae-isolated-from-pregnant-women
#16
Simone Cristina Castanho Sabaini de Melo, Nathally Claudiane de Souza Santos, Marcia de Oliveira, Regiane Bertin de Lima Scodro, Rosilene Fressatti Cardoso, Rúbia Andreia Falleiros Pádua, Flavia Teixeira Ribeiro Silva, Aline Balandis Costa, Maria Dalva de Barros Carvalho, Sandra Marisa Pelloso
Introduction: Group B streptococcus (GBS) or Streptococcus agalactiae can colonize the gastrointestinal and genitourinary tracts and has been considered one of the most important risk factors for the development of neonatal disease. The present study evaluated the antimicrobial susceptibility of GBS isolates from pregnant women who were attended at a public health service in Northern Paraná, Brazil. Methods: A descriptive analytical cross-sectional study was performed with 544 pregnant women, at ≥ 35 weeks of gestation...
November 3, 2016: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/27821054/determination-of-virulence-and-antibiotic-resistance-pattern-of-biofilm-producing-listeria-species-isolated-from-retail-raw-milk
#17
Kamelia M Osman, Ahmed Samir, Usama H Abo-Shama, Essam H Mohamed, Ahmed Orabi, Tara Zolnikov
BACKGROUND: One of the foodborne pathogens is Listeria monocytogenes, which causes serious invasive illness in elderly and immunocompromised patients, pregnant women, newborns and infants ranking second after salmonellosis because of its high case fatality rate. Listerial cow mastitis marked by abnormal milk, increased cell counts and reduced production has not been reported. Therefore, apparently healthy cows can be reservoirs of L. monocytogenes. A number of 203 udder milk samples from apparently healthy animals (buffalo, n = 100; cow, n = 103) were collected and tested for Listeria...
November 8, 2016: BMC Microbiology
https://www.readbyqxmd.com/read/27786400/helicobacter-pylori-colonization-and-pregnancies-complicated-by-preeclampsia-spontaneous-prematurity-and-small-for-gestational-age-birth
#18
Wouter J den Hollander, Sarah Schalekamp-Timmermans, I Lisanne Holster, Vincent W Jaddoe, Albert Hofman, Henriëtte A Moll, Guillermo I Perez-Perez, Martin J Blaser, Eric A P Steegers, Ernst J Kuipers
BACKGROUND: Preeclampsia (PE), small for gestational age (SGA), and spontaneous preterm birth (PTB) each may be complications of impaired placental function in pregnancy. Although their exact pathogenesis is still unknown, certain infectious agents seem to play a role. Helicobacter pylori (H. pylori) colonization has been associated with increased risk for PE. Our aim was to assess the association between H. pylori colonization and PE, SGA, and PTB. MATERIAL AND METHODS: We measured IgG anti-H...
October 27, 2016: Helicobacter
https://www.readbyqxmd.com/read/27780533/activation-of-the-il-1%C3%AE-cxcl1-mmp-10-axis-in-chorioamnionitis-induced-by-inactivated-group-b-streptococcus
#19
Julie Bergeron, Noha Gerges, Clémence Guiraut, Djordje Grbic, Marie-Julie Allard, Louis-Charles Fortier, Cathy Vaillancourt, Guillaume Sébire
Infection or inflammation during pregnancy is known to lead to maternal immune activation triggering a fetal inflammatory response syndrome associated with deleterious effects, such as brain injury and neurodevelopmental disabilities. Group B Streptococcus (GBS) - one of the most common bacterium colonizing pregnant women - can be responsible for chorioamnionitis. Given that interleukin (IL)-1β has a major role in anti-GBS host defense, we hypothesized that IL-1β-driven innate immune response is implicated in GBS-induced chorioamnionitis...
November 2016: Placenta
https://www.readbyqxmd.com/read/27756413/fat-and-vitamin-intakes-during-pregnancy-have-stronger-relations-with-a-pro-inflammatory-maternal-microbiota-than-does-carbohydrate-intake
#20
Siddhartha Mandal, Keith M Godfrey, Daniel McDonald, Will V Treuren, Jørgen V Bjørnholt, Tore Midtvedt, Birgitte Moen, Knut Rudi, Rob Knight, Anne Lise Brantsæter, Shyamal D Peddada, Merete Eggesbø
BACKGROUND: Although diet is known to have a major modulatory influence on gut microbiota, knowledge of the specific roles of particular vitamins, minerals, and other nutrients is limited. Modulation of the composition of the microbiota in pregnant women is especially important as maternal microbes are transferred during delivery and initiate the colonization process in the infant. We studied the associations between intake of specific dietary nutrients during pregnancy and gut microbiota composition...
October 19, 2016: Microbiome
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