keyword
MENU ▼
Read by QxMD icon Read
search

Streptococcus

keyword
https://www.readbyqxmd.com/read/28239478/genomic-analysis-of-a-streptococcus-pyogenes-strain-causing-endocarditis-in-a-child
#1
M Beye, K El Karkouri, N Labas, D Raoult, P-E Fournier
We sequenced the genome of Streptococcus pyogenes strain G773 that caused an infective endocarditis in a 4-year-old boy suffering from acute endocarditis. The 1.9-Mb genome exhibited a specific combination of virulence factors including a complete integrative and conjugative element, sp2905, previously described as incomplete in S. pyogenes, and five bacteriocin-coding genes. However, strain G773 lacked a CRISPR-Cas system.
May 2017: New Microbes and New Infections
https://www.readbyqxmd.com/read/28239081/clinical-features-of-spontaneous-bacterial-peritonitis-a-10-year-experience-from-a-single-center
#2
Ha Young Na, Jeong Han Kim, Won Hyeok Choe, So Young Kwon, Byung Chul Yoo
Background/Aims: Spontaneous bacterial peritonitis (SBP) is one of critical complications in liver cirrhosis patients with ascites. We aimed to review clinical course of SBP patients in a 10-year period from single center. Methods: This study enrolled SBP patients between 2005 and 2015. Their medical records were reviewed. The laboratory findings of serum and ascites were examined, and characteristics of isolated microorganisms in ascites were analyzed. Results: Total 51 patients were enrolled...
February 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28238416/quantitative-multiplexed-tandem-pcr-for-direct-detection-of-bacteraemia-in-critically-ill-patients
#3
Andrew N Ginn, Briony Hazelton, Shereen Shoma, Martin Cullen, Thomas Solano, Jonathan R Iredell
Culture remains the gold standard for diagnosis of blood stream infections (BSI), but its clinical utility is limited by slow turnaround times. Here we describe a method for rapid quantitative detection of bacterial DNA directly extracted from whole blood using a multiplexed tandem real-time PCR (MT-PCR) assay targeting Staphylococcus, Streptococcus, Pseudomonas, Enterococcus and Enterobacteriaceae 16S rDNA genes. Results were available less than 3.5 hours after blood collection with all five bacterial targets having limits of detection between 10(1) and 10(3) CFU/mL...
February 23, 2017: Pathology
https://www.readbyqxmd.com/read/28237766/n-acetylcysteine-inhibits-growth-adhesion-and-biofilm-formation-of-gram-positive-skin-pathogens
#4
Daria Eroshenko, Tatyana Polyudova, Vladimir Korobov
N-Acetylcysteine (NAC) is a non-antibiotic drug with antimicrobial properties against biofilm phenotypes of Gram-positive and Gram-negative bacteria. Our aim was to assess the effects of NAC on the growth of Gram-positive human skin and mucous membrane pathogens in the planktonic and biofilm phases. The minimum inhibitory concentrations (MICs) of NAC against Enterococcus faecalis, Corynebacterium ammoniagenes, Mycobacterium smegmatis, Propionibacterium acnes, Staphylococcus aureus, S. epidermidis, Streptococcus pyogenes, and 14 clinical strains of coagulase-negative staphylococci (CNS) ranged from 0...
February 22, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28237623/effect-of-underlying-immune-compromise-on-the-manifestations-and-outcomes-of-group-a-streptococcal-bacteremia
#5
Kathleen A Linder, Leen Alkhouli, Mayur Ramesh, George A Alangaden, Carol A Kauffman, Marisa H Miceli
BACKGROUND: Group A streptococcal bloodstream infection is the most common presentation of invasive group A streptococcal disease. We sought to determine the impact of immunosuppression on severity of disease and clinical outcomes. METHODS: This retrospective review of 148 patients with at least one positive blood culture for Streptococcus pyogenes from 1/2003 to 3/2013 compared immunocompromised patients with those with no immunocompromise in regards to development of severe complications and mortality...
February 22, 2017: Journal of Infection
https://www.readbyqxmd.com/read/28237594/efficacy-of-a-high-free-iodine-barrier-teat-disinfectant-for-the-prevention-of-naturally-occurring-new-intramammary-infections-and-clinical-mastitis-in-dairy-cows
#6
C M M R Martins, E S C Pinheiro, M Gentilini, M Lopez Benavides, M V Santos
Using a natural exposure trial design, the goal of our study was to evaluate the clinical efficacy of an iodine teat disinfectant with barrier properties and a high level of free iodine relative to a conventional iodine teat disinfectant with no barrier properties and low levels of free iodine. During the 18 wk of the trial, quarter milk samples were collected every 2 wk from 385 dairy cows from 2 herds. Cows on both farms were assigned in a balanced way according to milk yield, number of lactation, days in milk, somatic cell count (SCC) and microbiology culture pretrial into one of following groups: nonbarrier post milking teat disinfectant (NBAR; n = 195 cows; 747 quarters) or barrier postmilking teat disinfectant (BAR; n = 190 cows; 728 quarters)...
February 22, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28237588/evaluating-a-commercial-pcr-assay-against-bacterial-culture-for-diagnosing-streptococcus-uberis-and-staphylococcus-aureus-throughout-lactation
#7
N M Steele, J H Williamson, R Thresher, R A Laven, J E Hillerton
The performance of a commercial, real-time PCR assay was compared with traditional bacterial culture for the identification of Streptococcus uberis and Staphylococcus aureus in bovine milk collected at different stages of lactation. Initial validation tests using fresh and frozen quarter milk samples identified factors that affected the success of the PCR. Therefore, the standard protocol was adjusted for samples collected at the first milking postpartum (colostrum) and from clinical mastitis cases. The adjustment involved PCR testing both undiluted and diluted (1 in 10 with sterile water) DNA extracts...
February 22, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28237500/prospects-for-preventing-infant-invasive-gbs-disease-through-maternal-vaccination
#8
Shabir A Madhi, Ziyaad Dangor
Group B streptococcus (GBS) is a leading cause of neonatal sepsis, with the highest incidence (1.3 per 1000 live births) reported from Africa. Although the incidence of invasive GBS disease is reportedly low in South Asia, there is disconnect between prevalence of maternal recto-vaginal colonization and the incidence of early-onset disease (EOD). This is possibly due to case-ascertainment biases that omit investigation of newborns dying on day-0 of life, which accounts for >90% of EOD. Furthermore, GBS is associated with approximately 15% of all infection related stillbirths...
February 22, 2017: Vaccine
https://www.readbyqxmd.com/read/28237374/intertrigo-caused-by-streptococcus-pyogenes
#9
Anca Chiriac, Alina Murgu, Marius Florin Coroș, Adrian Naznean, Cristian Podoleanu, Simona Stolnicu
Well-demarcated, beefy-red lesions of the skin folds, without satellite lesions, are the clinical hallmarks of intertrigo, frequently misdiagnosed especially in young children. We present 6 cases of streptococcal intertrigo to draw attention to this easily diagnosed and treated, but frequently overlooked, infection.
February 22, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28236536/-streptococcus-milleri-an-unusual-cause-of-skull-extensive-osteomyelitis-in-an-immunocompetent-patient
#10
C Duquenne, E Dernis, A Zehrouni, A Bizon, M Duquenne
INTRODUCTION: Streptococcus milleri (Streptococcus anginosus, intermedius and constellatus) are commensal organisms, which can become pathogenic and cause infection with frequent abscess formation, local or metastatic extension. Osteomyelitis of the skull has been rarely reported in this type of infection. CASE REPORT: Skull osteomyelitis due to Streptococcus milleri is reported in a 61-year-old immunocompetent man without any medical history, occurring 10 months after a head injury without any wound or complication at initial presentation...
February 21, 2017: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/28236516/colorectal-neoplasm-in-cases-of-clostridium-septicum-and-streptococcus-gallolyticus-subsp-gallolyticus-bacteraemia
#11
Juan Corredoira, Imma Grau, José F Garcia-Rodriguez, María Jose García-País, Ramón Rabuñal, Carmen Ardanuy, Fernando García-Garrote, Amparo Coira, Maria Pilar Alonso, Annemarie Boleij, Roman Pallares
BACKGROUND: Bacteremia with Clostridium septicum (CS) and Streptococcus gallolyticus subsp. gallolyticus (SGG) have both been associated with colorectal neoplasms (CRN) and colonoscopic examination is advised, however the differences and similarities in colorectal findings are not well known. METHODS: This is a multicenter, comparative study of patients with CS bacteremia [44 of 664 cases (6.6%) of Clostridium spp.] and SGG bacteremia [257 of 596 cases (44.2%) of S...
February 21, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28236250/group-b-streptococcal-disease-in-infants-in-the-first-year-of-life-a-nationwide-surveillance-study-in-japan-2011-2015
#12
Kousaku Matsubara, Kiyoshi Hoshina, Masatoshi Kondo, Isao Miyairi, Yoshiya Yukitake, Yusuke Ito, Kisei Minami, Ryuichi Genkawa
PURPOSE: This study aimed to describe the epidemiology of childhood group B streptococcus (GBS) disease including late late-onset disease (LLOD) and to clinically characterize recurrent cases and twin-sibling cases in Japan. METHODS: We collected information on infants (<1 year of age) with invasive GBS disease and institutional information about births and transfers through a nationwide questionnaire between 2011 and 2015. RESULTS: We identified 133 infants with early-onset disease (EOD), 274 late-onset disease (LOD), and 38 LLOD from 149 institutes...
February 25, 2017: Infection
https://www.readbyqxmd.com/read/28236205/influence-of-oral-probiotic-streptococcus-salivarius-k12-on-ear-and-oral-cavity-health-in-humans-systematic-review
#13
Katarina Zupancic, Valentina Kriksic, Irena Kovacevic, Dujo Kovacevic
Traditionally, probiotics are linked to the good health of the intestine and most clinical studies focus on that field. Evidence of oral probiotic use for ear and oral cavity disease prevention with impact on human health is limited. This work reviews existing studies and literature on Streptococcus salivarius K12 as an oral probiotic and effects of S. salivarius K12 on human ear and oral cavity human health. The studies were accessed via database searches: MEDLINE, PubMed, and Elsevier. The search included/focused on/encompassed publications from 2003 to 2016 with keywords related to K12 Streptococcus salivarius, bacteriocin-like inhibitory substances (BLIS) K12, probiotic K12 salivarius, and K12 probiotic health effects...
February 24, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28235637/inhibition-of-mir-92d-3p-enhances-inflammation-responses-in-genetically-improved-farmed-tilapia-gift-oreochromis-niloticus-with-streptococcus-iniae-infection-by-modulating-complement-c3
#14
Jun Qiang, Yi-Fan Tao, Jie He, Hong-Xia Li, Pao Xu, Jin-Wen Bao, Yi-Lan Sun
MicroRNAs (miRNAs) are small, non-coding RNAs that regulate target gene expression by binding to the 3'-untranslated regions (3'-UTRs) of their target mRNAs. The miR-92 family is an important miRNA family, which was discovered to be related to regulation of tumor proliferation, apoptosis, invasion, and metastasis. Inhibition of miR-92d-3p was found previously in head kidney of genetically improved farmed tilapia (GIFT, Oreochromis niloticus) exposed to Streptococcus iniae infection. In this study, we found that miR-92d-3p regulated complement C3 mRNA levels by binding to its 3'-UTR by 3'-UTR luciferase reporter assay, and reduced miR-92d-3p expression resulted in increased C3 mRNA levels...
February 21, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28235635/cephalosporin-no-donor-prodrug-pyrro-c3d-shows-%C3%AE-lactam-mediated-activity-against-streptococcus-pneumoniae-biofilms
#15
Raymond N Allan, Michael J Kelso, Ardeshir Rineh, Nageshwar R Yepuri, Martin Feelisch, Odel Soren, Sanjita Brito-Mutunayagam, Rami J Salib, Paul Stoodley, Stuart C Clarke, Jeremy S Webb, Luanne Hall-Stoodley, Saul N Faust
Bacterial biofilms show high tolerance towards antibiotics and are a significant problem in clinical settings where they are a primary cause of chronic infections. Novel therapeutic strategies are needed to improve anti-biofilm efficacy and support reduction in antibiotic use. Treatment with exogenous nitric oxide (NO) has been shown to modulate bacterial signaling and metabolic processes that render biofilms more susceptible to antibiotics. We previously reported on cephalosporin-3'-diazeniumdiolates (C3Ds) as NO-donor prodrugs designed to selectively deliver NO to bacterial infection sites following reaction with β-lactamases...
February 21, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/28231686/evaluation-of-the-amoxicillin-concentrations-in-amniotic-fluid-placenta-umbilical-cord-blood-and-maternal-serum-two-hours-after-intravenous-administration
#16
(no author information available yet)
OBJECTIVES: The aims of this study were to evaluate amoxicillin concentrations in amniotic fluid, placenta, umbilical cord blood and maternal blood two hours after intravenous administration to assess obstetric and non-obstetric factors that could have influences on the penetration of the antibiotic into the examined tissues and to analyze the sensitivity to amoxicillin of the most common pathogens isolated from the genital tract. METHODS: A total of 35 full-term pregnant women who qualified for elective Caesarean delivery were included in the study...
October 24, 2016: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28231036/aqueous-humor-penetration-and-biological-activity-of-moxifloxacin-0-5-ophthalmic-solution-alone-or-with-dexamethasone-0-1
#17
Rachel L R Gomes, Rodrigo Galvão Viana, Luiz Alberto S Melo, Alessandro Carvalho Cruz, Eunice Mayumi Suenaga, Kenneth R Kenyon, Mauro Campos
PURPOSE: To compare aqueous humor concentrations of topically applied moxifloxacin 0.5% ophthalmic solution alone or in combination with dexamethasone 0.1% and to correlate these concentrations with the minimum inhibitory concentrations (MICs) for common endophthalmitis-causing organisms. METHODS: Sixty-eight patients undergoing routine phacoemulsification with intraocular lens implantation received either moxifloxacin 0.5% alone or moxifloxacin 0.5% combined with dexamethasone...
March 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28230273/comparison-of-pathogen-eradication-rate-and-safety-of-anti-bacterial-agents-for-bronchitis-a-network-meta-analysis
#18
Jinghua Wang, Haiyang Xu, Dunwei Wang, Mingxian Li
OBJECTIVE: A large number of population in both developing and developed countries are affected by bronchitis, among all the factors, bacterial infection was considered as a critical cause of acute exacerbations of chronic bronchitis. Although several anti-bacterial agents were proved to have the effect of alleviating bronchitis, their relative efficacies and potential side effects remained not clear. We are keen to compare the pathogen eradication rate and safety of anti-bacterial agents for bronchitis...
February 23, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28229593/development-of-laser-structured-liquid-infused-titanium-with-strong-biofilm-repellent-properties
#19
Katharina Doll, Elena Fadeeva, Joern Schaeske, Tobias Ehmke, Andreas Winkel, Alexander Heisterkamp, Boris N Chichkov, Meike Stiesch, Nico S Stumpp
Medical implants are commonly used in modern medicine but still harbor the risk of microbial infections caused by bacterial biofilms. As their retrospective treatment is difficult, there is a need for biomedical materials, which inhibit bacterial colonization from the start without using antibacterial agents, as these can promote resistance development. The promising concept of slippery liquid-infused porous surfaces (SLIPS) possesses enormous potential for this purpose. In the present study, this principle was applied to titanium, a common material in implantology, and its biofilm-repellent properties were demonstrated...
February 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28228857/total-synthesis-of-a-streptococcus-pneumoniae-serotype-12f-cps-repeating-unit-hexasaccharide
#20
Peter H Seeberger, Claney L Pereira, Subramanian Govindan
The Gram-positive bacterium Streptococcus pneumoniae causes severe disease globally. Vaccines that prevent S. pneumoniae infections induce antibodies against epitopes within the bacterial capsular polysaccharide (CPS). A better immunological understanding of the epitopes that protect from bacterial infection requires defined oligosaccharides obtained by total synthesis. The key to the synthesis of the S. pneumoniae serotype 12F CPS hexasaccharide repeating unit that is not contained in currently used glycoconjugate vaccines is the assembly of the trisaccharide β-D-GalpNAc-(1→4)-[α-D-Glcp-(1→3)]-β-D-ManpNAcA, in which the branching points are equipped with orthogonal protecting groups...
2017: Beilstein Journal of Organic Chemistry
keyword
keyword
5296
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"