keyword
MENU ▼
Read by QxMD icon Read
search

Streptococcus agalactiae

keyword
https://www.readbyqxmd.com/read/28428133/epidemiological-study-of-common-diseases-and-their-risk-factors-in-camels-in-south-punjab-pakistan
#1
Aneela Zameer Durrani, Zubair Bashir, Imran Rasheed, Noor-Ul-Ain Sarwar
Bacteriological study of mastitis along with common blood protozoan diseases were studied in dromedary camels in Cholistan, Dera Ismail Khan and Rahim Yar Khan districts in South Punjab, Pakistan. For this purpose 300 camels were sampled randomly at different common grazing and watering point. For study of blood parasites clinically suspected and apparently healthy camels, 150 each, were sampled. An overall prevalence of 15%and 5% was recorded for trypanosomiasis and Anaplasmosis respectively. Trypanosoma evansi was identified with 280 bp product on polymerase chain reaction test...
April 17, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28425874/in-vitro-and-in-vivo-assessments-of-rhodomyrtus-tomentosa-leaf-extract-as-an-alternative-anti-streptococcal-agent-in-nile-tilapia-oreochromis-niloticus-l
#2
Pinanong Na-Phatthalung, Sasitorn Chusri, Naraid Suanyuk, Supayang Piyawan Voravuthikunchai
PURPOSE: Rhodomyrtustomentosa is a Thai medicinal plant that has been attracting attention for its remarkable antibacterial properties against Gram-positive pathogenic bacteria. The purpose of this study was to evaluate the antibacterial properties of R. tomentosa leaf extract against Streptococcus agalactiae and Streptococcus iniae isolated from infected tilapia. METHODOLOGY: The anti-streptococcal activity of R. tomentosa was determined using broth microdilution assays...
April 21, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28416607/human-milk-oligosaccharides-inhibit-growth-of-group-b-streptococcus
#3
Ann E Lin, Chloe A Autran, Alexandra Szyszka, Tamara Escajadillo, Mia Huang, Kamil Godula, Anthony R Prudden, Geert-Jan Boons, Amanda L Lewis, Kelly S Doran, Victor Nizet, Lars Bode
Streptococcus agalactiae (group B Streptococcus; GBS) is a leading cause of invasive bacterial infections in newborns, typically acquired vertically during childbirth secondary to maternal vaginal colonization. Human milk oligosaccharides (HMOs) have important nutritional and biological activities that guide development of the infant's immune system and shape the composition of normal gut microbiota. In this manner, HMOs help protect against pathogen colonization and reduce risk of infection. In the course of our studies of HMO-microbial interactions, we unexpectedly uncovered a novel HMO property to directly inhibit the growth of GBS, independent of host immunity...
April 17, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28402182/analysis-of-point-mutations-in-the-pbp2x-pbp2b-and-pbp1a-genes-of-streptococcus-agalactiae-and-their-relation-with-a-reduced-susceptibility-to-cephalosporins
#4
Giorgio Piccinelli, Giuseppe Carlentini, Franco Gargiulo, Arnaldo Caruso, Maria Antonia De Francesco
The emergence of group B Streptococcus (GBS) isolates with reduced penicillin susceptibility (PRGBS) and their tendency to be nonsusceptible to fluoroquinolones prompted us to analyze the possible presence of amino acid mutations in penicillin-binding proteins (PBPs) (PBP2X, PBP1A, and PBP2B) from a collection of fluoroquinolone-resistant GBS isolates. We analyzed 21 GBS isolates resistant to levofloxacin. Sequence analysis of genes for PBPs was performed. The minimal inhibitory concentrations (MICs) for penicillin, ceftibuten, cefaclor, cefixime, cefotaxime, and ceftizoxime were performed by the Etest method and by broth microdilution method...
April 12, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28400757/streptococcus-agalactiae-causing-neonatal-infections-in-portugal-2005-2015-diversification-and-emergence-of-a-cc17-pi-2b-multidrug-resistant-sublineage
#5
Elisabete R Martins, Cristiano Pedroso-Roussado, José Melo-Cristino, Mário Ramirez
The molecular characterization of 218 GBS isolates recovered from neonatal invasive infections in Portugal in 2005-2015 revealed the existence of a small number of genetically distinct lineages that were present over a significant time-span. Serotypes III and Ia were dominant in the population, together accounting for >80% of the isolates. Clonal complex 17 included 50% of all isolates, highlighting the importance of the hypervirulent genetic lineage represented by serotype III ST17/rib/PI-1+PI-2b. Serotype Ia was represented mainly by ST23, previously reported as dominant among invasive disease in non-pregnant adults in Portugal, but also by ST24, showing an increased frequency among late-onset disease...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28381819/purulent-pericarditis-an-uncommon-presentation-of-a-common-organism
#6
Muhammad Kashif, Henish Raiyani, Masooma Niazi, Kamalakkannan Gayathri, Trupti Vakde
BACKGROUND In the modern antibiotic era, Streptococcus agalactiae infection of the endocardium and pericardial space is a rare occurrence. However, once the disease spreads it can lead to life-threatening illness despite advances in diagnostic and treatment modalities, partly because the symptoms and signs associated with pericarditis are frequently missing, and due to the rarity of the disease, diagnosis is often overlooked. We report an extremely rare case of purulent pericarditis caused by Streptococcus agalactiae...
April 6, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28376391/new-glycolipid-biosurfactants-produced-by-the-yeast-strain-wickerhamomyces-anomalus-ccma-0358
#7
Karla S Teixeira Souza, Eduardo J Gudiña, Zélia Azevedo, Victor de Freitas, Rosane F Schwan, Lígia R Rodrigues, Disney R Dias, José A Teixeira
In this work, biosurfactant production by several yeast strains was evaluated using different culture media. The best results were obtained with the strain Wickerhamomyces anomalus CCMA 0358 growing in a culture medium containing glucose (1g/L) and olive oil (20g/L) as carbon sources. This strain produced 2.6g of biosurfactant per liter after 24h of growth. The crude biosurfactant reduced the surface tension of water to values around 31mN/m, and its critical micelle concentration was 0.9mg/mL. This biosurfactant was characterized through mass spectrometry (MS), and nuclear magnetic resonance (NMR) as a mixture of two different glycolipids, comprising a sugar moiety linked to one or three molecules of oleic acid...
March 21, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28373088/clinical-presentation-and-treatment-of-septic-arthritis-in-children
#8
I Moro-Lago, G Talavera, L Moraleda, G González-Morán
INTRODUCTION: The aim of this study is to determine the epidemiological features, clinical presentation, and treatment of children with septic arthritis. MATERIAL AND METHOD: A retrospective review was conducted on a total of 141 children with septic arthritis treated in Hospital Universitario La Paz (Madrid) between the years 2000 to 2013. The patient data collected included, the joint affected, the clinical presentation, the laboratory results, the appearance, Gram stain result, and the joint fluid culture, as well as the imaging tests and the treatment...
March 31, 2017: Revista Española de Cirugía Ortopédica y Traumatología
https://www.readbyqxmd.com/read/28341517/enhancement-of-bactericidal-activity-against-group-b-streptococci-with-reduced-penicillin-susceptibility-by-uptake-of-gentamicin-into-cells-resulting-from-combination-with-%C3%AE-lactam-antibiotics
#9
Yoshifumi Ebara, Miyuki Morozumi, Mamiko Sato, Nobuko Moritoki, Meiwa Toyofuku, Misako Takata, Mitsuru Murata, Kimiko Ubukata, Satoshi Iwata
Combined effects of penicillin (PEN) and gentamicin (GM) against Streptococcus agalactiae, i.e. group B streptococci (GBS), are known to occur, but synergy has not been examined in strains with reduced PEN susceptibility, usually called PEN-resistant GBS (PRGBS). We therefore studied combined effects of β-lactam antibiotics and GM in cultures of 3 PRGBS strains belonging to serotype Ia or III that were isolated from Japanese adults with invasive infections. Killing kinetics were determined at 2-h intervals from 0 to 6 h after exposure to ampicillin (AMP) or cefotaxime (CTX) combined with GM...
March 21, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28333320/cross-resistance-to-lincosamides-streptogramins-a-and-pleuromutilins-in-streptococcus-agalactiae-isolates-from-the-usa
#10
Paulina A Hawkins, Caitlin S Law, Benjamin J Metcalf, Sopio Chochua, Delois M Jackson, Lars F Westblade, Robert Jerris, Bernard W Beall, Lesley McGee
Background: Streptococcus agalactiae (Group B Streptococcus, GBS) is a leading cause of meningitis, sepsis and pneumonia in neonates in the United States. GBS also causes invasive disease in older infants, pregnant women, children and young adults with underlying medical conditions, and older adults. Resistance to lincosamides in the absence of erythromycin resistance is rare in GBS, but has been previously reported in clinical isolates, both on its own or in combination with resistance to streptogramins A and pleuromutilins (L/LSA/LSAP phenotypes)...
March 13, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28332290/inductors-and-regulatory-properties-of-the-genomic-island-associated-fru2-metabolic-operon-of-streptococcus-agalactiae
#11
K Patron, P Gilot, V Rong, A Hiron, L Mereghetti, E Camiade
No abstract text is available yet for this article.
April 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28321367/evaluation-of-procedures-for-typing-of-group-b-streptococcus-a-retrospective-study
#12
Hans-Christian Slotved, Steen Hoffmann
BACKGROUND: This study evaluates two procedures for typing of Streptococcus agalactiae (group B streptococci; GBS) isolates, using retrospective typing data from the period 2010 to 2014 with a commercial latex agglutination test (latex test) and the Lancefield precipitation test (LP test). Furthermore, the genotype distribution of phenotypically non-typable (NT) GBS isolates is presented. We also raise the awareness, that the difference in typing results obtained by phenotypical methods and genotype based methods may have implications on vaccine surveillance in case a GBS vaccine is introduced...
2017: PeerJ
https://www.readbyqxmd.com/read/28315021/clinical-strains-of-streptococcus-agalactiae-carry-two-different-variants-of-pathogenicity-island-xii
#13
Eugenia Kuleshevich, Joseph Ferretti, Ilda Santos Sanches, Natesan Balasubramanian, Barbara Spellerberg, Androulla Efstratiou, Paula Kriz, Kornelia Grabovskaya, Olga Arjanova, Alevtina Savitcheva, Valentin Shevchenko, Anton Rysev, Alexander Suvorov
Streptococcus agalactiae or Group B streptococci (GBS) are a common cause of serious diseases of newborns and adults. GBS pathogenicity largely depends on genes located on the accessory genome including several pathogenicity islands (PAI). The present paper is focused on the structure and molecular epidemiological analysis of one of the GBS pathogenicity islands-the pathogenicity island PAI XII (Glaser et al. Mol Microbiol 45(6):1499-1513, 2002). This PAI was found to be composed of three different mobile genetic elements: a composite transposon (PAI-C), a genomic islet (PAI-B), and a pathogenicity island associated with gene sspB1 (PAI-A)...
March 18, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28300698/antibacterial-screening-of-rumex-species-native-to-the-carpathian-basin-and-bioactivity-guided-isolation-of-compounds-from-rumex-aquaticus
#14
Orsolya Orbán-Gyapai, Erika Liktor-Busa, Norbert Kúsz, Dóra Stefkó, Edit Urbán, Judit Hohmann, Andrea Vasas
Plants belonging to the genus Rumex (family Polygonaceae) are used worldwide in traditional medicine for the treatment of various diseases caused by different microorganisms (e.g. bacteria-related dermatologic conditions, dysentery and enteritis). The present study focused on the antibacterial screening of Rumex species native to the Carpathian Basin, and isolation of compounds from one of the most efficient species, Rumex aquaticus. The antibacterial effects of n-hexane, chloroform and aqueous fractions of methanol extracts prepared from different parts of 14 Rumex species (R...
April 2017: Fitoterapia
https://www.readbyqxmd.com/read/28295891/molecular-serotyping-virulence-gene-profiling-and-pathogenicity-of-streptococcus-agalactiae-isolated-from-tilapia-farms-in-thailand-by-multiplex-pcr
#15
Korntip Kannika, Duangjai Pisuttharachai, Prapansak Srisapoome, Janenuj Wongtavatchai, Hidehiro Kondo, Ikuo Hirono, Sasimanas Unajak, Nontawith Areechon
AIMS: This study aimed to biotype Streptococcus agalactiae isolated from tilapia farms in Thailand based on molecular biotyping methods and to determine the correlation between the serotype and virulence of bacteria. In addition to a biotyping (serotyping) technique based on multiplex PCR of cps genes, in this study, we developed multiplex PCR typing of Group B streptococcus (GBS) virulence genes to examine 3 clusters of virulence genes and their correlation to the pathogenicity of S...
March 13, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28257899/short-read-whole-genome-sequencing-for-determination-of-antimicrobial-resistance-mechanisms-and-capsular-serotypes-of-current-invasive-streptococcus-agalactiae-recovered-in-the-usa
#16
B J Metcalf, S Chochua, R E Gertz, P A Hawkins, J Ricaldi, Z Li, H Walker, T Tran, J Rivers, S Mathis, D Jackson, A Glennen, R Lynfield, L McGee, B Beall
OBJECTIVES: Our objective was to evaluate and exploit a whole genome sequence (WGS) bioinformatics pipeline for predicting antimicrobial resistance and capsular serotypes from invasive group B streptococci (iGBS). METHODS: For 1975 iGBS recovered during 2015 from CDC's Active Bacterial Core surveillance, we compared pipeline predictions with broth dilution testing. Fifty-six isolates from earlier surveillance were included for testing β-lactams. Conventional serotyping was compared to WGS-based assignments for 302 isolates...
February 28, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28256391/molecular-epidemiology-of-streptococcus-agalactiae-isolated-from-mastitis-in-brazilian-dairy-herds
#17
Glei A Carvalho-Castro, Juliana R Silva, Luciano V Paiva, Dircéia A C Custódio, Rafael O Moreira, Glaucia F Mian, Ingrid A Prado, Antônio Chalfun-Junior, Geraldo M Costa
Streptococcus agalactiae is one of the most common pathogens leading to mastitis in dairy herds worldwide; consequently, the pathogen causes major economic losses for affected farmers. In this study, multilocus sequence typing (MLST), genotypic capsular typing by multiplex polymerase chain reaction (PCR), and virulence gene detection were performed to address the molecular epidemiology of 59 bovine (mastitis) S. agalactiae isolates from 36 dairy farms located in the largest milk-producing mesoregions in Brazil (Minas Gerais, São Paulo, Paraná, and Pernambuco)...
February 16, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28249108/the-zinc-efflux-activator-scza-protects-streptococcus-pneumoniae-serotype-2-d39-from-intracellular-zinc-toxicity
#18
Julia E Martin, Katherine A Edmonds, Kevin E Bruce, Gregory C Campanello, Bart A Eijkelkamp, Erin B Brazel, Christopher A McDevitt, Malcolm E Winkler, David P Giedroc
Zinc is an essential trace element that serves as a catalytic cofactor in metalloenzymes and a structural element in proteins involved in general metabolism and cellular defenses of pathogenic bacteria. Despite its importance, high zinc levels can impair cellular processes, inhibiting growth of many pathogenic bacteria, including the major respiratory pathogen Streptococcus pneumoniae. Zinc intoxication is prevented in S. pneumoniae by expression of the zinc exporter CzcD, whose expression is activated by the novel TetR-family transcriptional zinc-sensing regulator SczA...
March 1, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28246454/molecular-identification-and-histopathological-study-of-natural-streptococcus-agalactiae-infection-in-hybrid-tilapia-oreochromis-niloticus
#19
A A Laith, Mohd Azmi Ambak, Marina Hassan, Shahreza Md Sheriff, Musa Nadirah, Ahmad Shuhaimi Draman, Wahidah Wahab, Wan Nurhafizah Wan Ibrahim, Alia Syafiqah Aznan, Amina Jabar, Musa Najiah
AIM: The main objective of this study was to emphasize on histopathological examinations and molecular identification of Streptococcus agalactiae isolated from natural infections in hybrid tilapia (Oreochromis niloticus) in Temerloh Pahang, Malaysia, as well as to determine the susceptibility of the pathogen strains to various currently available antimicrobial agents. MATERIALS AND METHODS: The diseased fishes were observed for variable clinical signs including fin hemorrhages, alterations in behavior associated with erratic swimming, exophthalmia, and mortality...
January 2017: Veterinary World
https://www.readbyqxmd.com/read/28244330/rapid-identification-of-pathogenic-streptococci-isolated-from-moribund-red-tilapia-oreochromis-spp
#20
Mohamed Abdelsalam, Mamdouh Y Elgendy, Mohamed Shaalan, Mohamed Moustafa, Masayuki Fujino
Accurate and rapid identification of bacterial pathogens of fish is essential for the effective treatment and speedy control of infections. Massive mortalities in market-sized red tilapia (Oreochromis spp.) were noticed in mariculture concrete ponds in northern Egypt. Histopathological examination revealed marked congestion in the central vein of the liver with the presence of bacterial aggregates inside the lumen and in the vicinity of the central vein. A total of 12 isolates of streptococci were obtained from the moribund fish...
March 2017: Acta Veterinaria Hungarica
keyword
keyword
38694
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"