keyword
MENU ▼
Read by QxMD icon Read
search

Group B streptococcus

keyword
https://www.readbyqxmd.com/read/28633864/perinatal-group-b-streptococcal-infections-virulence-factors-immunity-and-prevention-strategies
#1
REVIEW
Jay Vornhagen, Kristina M Adams Waldorf, Lakshmi Rajagopal
Group B streptococcus (GBS) or Streptococcus agalactiae is a β-hemolytic, Gram-positive bacterium that is a leading cause of neonatal infections. GBS commonly colonizes the lower gastrointestinal and genital tracts and, during pregnancy, neonates are at risk of infection. Although intrapartum antibiotic prophylaxis during labor and delivery has decreased the incidence of early-onset neonatal infection, these measures do not prevent ascending infection that can occur earlier in pregnancy leading to preterm births, stillbirths, or late-onset neonatal infections...
June 17, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28630844/multifocal-septic-arthritis-secondary-to-infective-endocarditis-a-rare-case-report
#2
Pavandeep Soor, Nikhil Sharma, Chandra Rao
INTRODUCTION: Infective endocarditis (IE) is a rare cause of septic arthritis. We report a patient who presented with multifocal septic arthritis as a result of IE, which is an extremely rare condition. CASE REPORT: This 69-year-old gentleman presented to the emergency department (ED) with a 3-day history of acute right knee pain. Initial investigations demonstrated chondrocalcinosis on knee radiographs, acute renal failure with rhabdomyolysis and a CRP of 520. After treatment with intravenous fluid rehydration and analgesia, the knee aspiration grew a Group B Streptococcus, and the patient underwent arthroscopic washout...
January 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28622535/vitamin-d-mediates-the-relationship-between-placental-cathelicidin-and-group-b-streptococcus-colonization-during-pregnancy
#3
Christine C Akoh, Eva K Pressman, Corrie M Whisner, Carrie Thomas, Chang Cao, Tera Kent, Elizabeth Cooper, Kimberly O O'Brien
Vitamin D is thought to modulate innate immune responses, and recent studies have highlighted the autocrine and paracrine functions of vitamin D in the placenta. Our objective was to determine the relationship between maternal vitamin D status and placental antimicrobial peptide (AMP) expression in a group of racially and ethnically diverse pregnant adolescents. In this study, 158 pregnant adolescents were recruited from the Rochester Adolescent Maternity Program (RAMP) in Rochester, NY. Maternal serum concentrations of the vitamin D biomarkers, 25-hydroxyvitamin D (25(OH)D) and 1,25-dihydroxyvitamin D (1,25(OH)2D), were measured at mid-gestation (∼26 weeks) and at delivery...
June 6, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28621047/clinical-value-of-polymerase-chain-reaction-in-detecting-group-b-streptococcus-during-labor
#4
Dorothea Maria Koppes, Antonius Arnoldus Cornelis Maria Vriends, Michiel van Rijn, Antonine Dimphne van Heesewijk
AIM: To reduce the intrapartum use of antibiotics in women with prolonged rupture of the membranes (PROM) by restriction of antibiotics to women who are colonized with group B streptococci (GBS), as identified with the Cepheid Gene Xpert polymerase chain reaction (PCR) for detecting GBS. METHODS: We conducted a randomized controlled trial among full-term delivering women with PROM. Fifty-four women were enrolled, based on a power calculation with a significance level of 5% and a power of 95%...
June 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28620262/prevalence-of-multiple-drug-resistant-streptococcus-suis-in-and-around-guwahati-india
#5
Mrinalee Devi, Jyoti B Dutta, Swaraj Rajkhowa, Dhireswar Kalita, Girindra Kumar Saikia, Bipin Chandra Das, Razibuddin Ahmed Hazarika, Gauranga Mahato
AIM: This study was conducted to determine the prevalence and antimicrobial susceptibility of Streptococcus suis and their resistance patterns isolated from both clinically healthy carriers and diseased pigs in and around Guwahati, Assam, India. MATERIALS AND METHODS: A total of 497 samples were collected during October, 2012, to April, 2014, from clinically healthy (n=67) and diseased (n=230) pigs of varying age and either sex maintained under organized and unorganized farming systems...
May 2017: Veterinary World
https://www.readbyqxmd.com/read/28617561/cervicovaginal-bacteria-and-fungi-in-pregnant-diabetic-and-non-diabetic-women-a-multicenter-observational-cohort-study
#6
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/28615930/prevention-of-influenza-a-h7n9-and-bacterial-infections-in-mice-using-intranasal-immunization-with-live-influenza-vaccine-and-the-group-b-streptococcus-recombinant-polypeptides
#7
Yulia A Desheva, Galina F Leontieva, Tatiana A Kramskaya, Tatiana A Smolonogina, Kornelia B Grabovskaya, Galina O Landgraf, Vadim E Karev, Alexander N Suvorov, Larisa G Rudenko
We investigate the protective effect of combined vaccination based on live attenuated influenza vaccine (LAIV) and group B streptococcus (GBS) recombinant polypeptides against potential pandemic H7N9 influenza infection followed by GBS burden. Mice were intranasally immunized using 107 50% egg infectious dose (EID50) of H7N3 LAIV, the mix of the 4 GBS peptides (group B streptococcus vaccine [GBSV]), or combined LAIV + GBSV vaccine. The LAIV raised serum hemagglutination-inhibition antibodies against H7N9 in higher titers than against H7N3...
2017: Virology: Research and Treatment
https://www.readbyqxmd.com/read/28615470/identification-of-the-group-b-streptococcus-capsule-type-using-a-dual-phenotypic-genotypic-assay
#8
Areej Alhhazmi, Armaan Pandey, Gregory J Tyrrell
The Group B streptococcus (GBS) capsular polysaccharide (CPS) is an important virulence factor which is also used for GBS typing. There are 10 CPS types (Ia, Ib and II-IX). GBS that do not phenotypically type are considered non-typable. All genes required for CPS synthesis are found on the GBS cps operon, which contains a highly variable CPS-determining region (cpsG-cpsK).The objective of this study was development of an assay to detect sialic acid on the GBS cell surface followed by a genotypic PCR CPS typing assay...
June 14, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28611324/comparative-evaluation-of-mangifera-indica-leaf-mouthwash-with-chlorhexidine-on-plaque-accumulation-gingival-inflammation-and-salivary-streptococcal-growth
#9
Sham S Bhat, K Sundeep Hegde, Chinchu Mathew, S Vidya Bhat, M Shyamjith
AIMS: This study aims to compare the efficacy of a mango (Mangifera indica) leaf mouthwash with chlorhexidine on plaque status, gingival status, and salivary Streptococcus mutans count. MATERIALS AND METHODS: A sample of twenty children, aged 8-14 years, Mangalore Residential School, Karnataka, India, was allocated into two groups. Group A (10) and Group B (10) were given test mouthwash "mango leaf mouthwash" and chlorhexidine, respectively. The clinical trial was carried out for ½ h after rinsing and after 5 days, during which children were asked to rinse once daily, with 10 ml of the given mouthwash ½ h after tooth brushing...
March 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28602733/efficacy-of-viable-bacillus-pumilus-isolated-from-farmed-fish-on-immune-responses-and-increased-disease-resistance-in-nile-tilapia-oreochromis-niloticus-laboratory-and-on-farm-trials
#10
Prapansak Srisapoome, Nonthawit Areechon
Applications of viable Bacillus pumilus AQAHBS01 isolated from Nile tilapia farms as probiotics were studied in both laboratory and farm conditions. In the laboratory, feeding fish (approximately 50 g) with feed containing viable B. pumilus at concentrations of 1 × 10(7)-10(9) colony forming units (CFU)/kg elevated fish immune responses, as indicated by their phagocytic activity and superoxide anion levels, and led to more effective disease resistance against Streptococcus agalactiae. However, when these concentrations were applied to Nile tilapia cultures growing in cage culture systems, only B...
June 7, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28600447/the-epidemiology-management-and-outcomes-of-bacterial-meningitis-in-infants
#11
Lynda Ouchenir, Christian Renaud, Sarah Khan, Ari Bitnun, Andree-Anne Boisvert, Jane McDonald, Jennifer Bowes, Jason Brophy, Michelle Barton, Joseph Ting, Ashley Roberts, Michael Hawkes, Joan L Robinson
OBJECTIVES: The pathogens that cause bacterial meningitis in infants and their antimicrobial susceptibilities may have changed in this era of increasing antimicrobial resistance, use of conjugated vaccines, and maternal antibiotic prophylaxis for group B Streptococcus (GBS). The objective was to determine the optimal empirical antibiotics for bacterial meningitis in early infancy. METHODS: This was a cohort study of infants <90 days of age with bacterial meningitis at 7 pediatric tertiary care hospitals across Canada in 2013 and 2014...
June 9, 2017: Pediatrics
https://www.readbyqxmd.com/read/28583583/temporal-changes-of-oxidative-stress-markers-in-escherichia-coli-k1-induced-experimental-meningitis-in-a-neonatal-rat-model
#12
Vijayasree V Giridharan, Lutiana R Simões, Valdemira S Dagostin, Jaqueline S Generoso, Gislaine T Rezin, Drielly Florentino, Jhonata P Muniz, Allan Collodel, Fabricia Petronilho, Joao Quevedo, Tatiana Barichello
Despite advances in antimicrobial therapy and advanced critical care neonatal bacterial meningitis has a mortality rate of over 10% and induces neurological sequelae in 20-50% of cases. Escherichia coli K1 (E. coli K1) is the most common gram-negative organism causing neonatal meningitis and is the second most common cause behind group B streptococcus. We previously reported that an E. coli K1 experimental meningitis infection in neonatal rats resulted in habituation and aversive memory impairment and a significant increase in cytokine levels in adulthood...
June 3, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28583016/a-comparison-of-enriched-culture-and-xpert-polymerase-chain-reaction-assay-of-group-b-streptococcus-carrier-status-at-35-37-week-gestation-to-labor-onset-a-prospective-controlled-study
#13
Yuri Perlitz, Moshe Ben-Ami, Emanuel C Megory, Orna Nitzan, Tal Bouganim, Johnny S Younis, Nora Shapso, Avi Peretz
OBJECTIVES: (1) To compare the accuracy of vagino-rectal enriched culture (EC) and a rapid polymerase chain reaction (PCR) test for the detection of Group B streptococcus (GBS) carrier status at 35-37-week gestation and at onset of labor (2). To assess the conversion rate of GBS carrier status between 35-37 weeks to the onset of labor according to the EC/PCR tests. A prospective study was performed at a women's health clinic, referred to give birth at one medical center. STUDY POPULATION: low risk pregnant women at 35-37-week gestation who did not know their GBS carrier status...
June 6, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28574339/diverse-stimuli-engage-different-neutrophil-extracellular-trap-pathways
#14
Elaine F Kenny, Alf Herzig, Renate Krüger, Aaron Muth, Santanu Mondal, Paul R Thompson, Volker Brinkmann, Horst Von Bernuth, Arturo Zychlinsky
Neutrophils release neutrophil extracellular traps (NETs) which ensnare pathogens and have pathogenic functions in diverse diseases. We examined the NETosis pathways induced by five stimuli; PMA, the calcium ionophore A23187, nigericin, Candida albicans and Group B Streptococcus. We studied NET production in neutrophils from healthy donors with inhibitors of molecules crucial to PMA induced NETs including protein kinase C, calcium, reactive oxygen species, the enzymes myeloperoxidase (MPO) and neutrophil elastase...
June 2, 2017: ELife
https://www.readbyqxmd.com/read/28571573/comparison-of-molecular-serotyping-approaches-of-streptococcus-agalactiae-from-genomic-sequences
#15
Georgia Kapatai, Darshana Patel, Androulla Efstratiou, Victoria J Chalker
BACKGROUND: Group B streptococcus (GBS) capsular polysaccharide is one of the major virulence factors underlying invasive GBS disease and a component of forthcoming vaccines. Serotype classification of GBS is based on the capsule polysaccharide of which ten variants are known to exist (Ia, Ib, II-IX). Current methods for GBS serotype assignment rely on latex agglutination or PCR while more recently a whole genome sequencing method was reported. In this study, three distinct algorithms for serotype assignment from genomic data were assessed using a panel of 790 clinical isolates...
June 1, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28570820/human-milk-oligosaccharides-exhibit-antimicrobial-and-anti-biofilm-properties-against-group-b-streptococcus
#16
Dorothy L Ackerman, Ryan S Doster, Jörn-Hendrik Weitkamp, David Aronoff, Jennifer A Gaddy, Steven D Townsend
Streptococcus agalactiae (Group B Streptococcus, GBS) is a Gram-positive bacterial pathogen that causes invasive infections of both children and adults. During pregnancy, GBS is a significant cause of infection of the fetal membranes (chorioamnionitis), which can lead to intra-amniotic infection, preterm birth, stillbirth, and neonatal sepsis. Recently, breastfeeding has been thought to represent a potential mode of GBS transmission from mother to newborn, which might increase the risk for late-onset sepsis...
June 1, 2017: ACS Infectious Diseases
https://www.readbyqxmd.com/read/28569141/disease-burden-and-antimicrobial-resistance-of-invasive-group-b-streptococcus-among-infants-in-china-a-protocol-for-a-national-prospective-observational-study
#17
Wenjing Ji, Haiying Liu, Zhengjiang Jin, Aimin Wang, Xiaoping Mu, Xiaosong Qin, Weidong Wang, Chunyan Gao, Yuning Zhu, Xiaodan Feng, Jine Lei, Shangyang She, Lan Jiang, Jing Liu, Shuhua Yang, Zeshi Liu, Gang Li, Qiuhong Li, Dawen Guo, Muhammad Majid Aziz, Ali Hassan Gillani, Yu Fang
BACKGROUND: Group B Streptococcus (GBS) is a cause of neonatal sepsis, pneumonia, and meningitis that can lead to neurological sequelae in infants less than 3 months of age. The GBS disease burden is not known in China, therefore it cannot receive major attention. The main objectives of this study are the evaluation of the incidence of neonatal GBS infection, GBS case-fatality ratio, its serotypes and genotypes, bacterial resistance, clinical treatment and outcomes in China. METHODS: We are conducting a nation-wide, population-based, multi-center, prospective, observational cohort study in China from May 2016 to December 2017...
May 31, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28569133/defining-the-abc-of-gene-essentiality-in-streptococci
#18
Amelia R L Charbonneau, Oliver P Forman, Amy K Cain, Graham Newland, Carl Robinson, Mike Boursnell, Julian Parkhill, James A Leigh, Duncan J Maskell, Andrew S Waller
BACKGROUND: Utilising next generation sequencing to interrogate saturated bacterial mutant libraries provides unprecedented information for the assignment of genome-wide gene essentiality. Exposure of saturated mutant libraries to specific conditions and subsequent sequencing can be exploited to uncover gene essentiality relevant to the condition. Here we present a barcoded transposon directed insertion-site sequencing (TraDIS) system to define an essential gene list for Streptococcus equi subsp...
May 31, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28562753/group-b-streptococcus-detection-in-pregnant-women-via-culture-and-pcr-methods
#19
Cláudia Wollheim, Rosa Dea Sperhacke, Sabrina Kahler Ribeiro Fontana, Andréa Cristina Vanni, Sérgio Kakuta Kato, Patricia Regina de Araújo, Afonso Luis Barth, José Mauro Madi
INTRODUCTION: Group B Streptococcus (GBS), a source of neonatal infection, colonizes the gastrointestinal and genitourinary tracts of pregnant women. Routine screening for maternal GBS in late pregnancy and consequent intrapartum antibiotic prophylaxis have reduced the incidence of early-onset GBS neonatal infection. The aim of this study was to evaluate the performance of PCR, compared to culture (gold standard), in GBS colonization screening of pregnant women, and to establish the prevalence of GBS colonization among this population...
March 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/28560649/group-b-streptococcus-causes-severe-sepsis-in-term-neonates-8-years-experience-of-a-major-chinese-neonatal-unit
#20
Ying Dong, Si-Yuan Jiang, Qi Zhou, Yun Cao
BACKGROUND: In contrast to industrialized countries, the clinical characteristics of neonatal sepsis caused by Group B Streptococcus (GBS) are largely unexplored in China. METHODS: A retrospective case series study was performed at a high-capacity neonatal unit in Shanghai, China from January 2008 to December 2015. Clinical characteristics of neonates with culture-proven GBS sepsis and antibiotic susceptibility of isolated strains were analyzed. RESULTS: Forty-three term neonates were included during the study period...
May 9, 2017: World Journal of Pediatrics: WJP
keyword
keyword
6511
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"