keyword
MENU ▼
Read by QxMD icon Read
search

serotyping

keyword
https://www.readbyqxmd.com/read/28550292/proteomic-comparisons-of-opaque-and-transparent-variants-of-streptococcus-pneumoniae-by-two-dimensional-differential-gel-electrophoresis
#1
Melissa H Chai, Florian Weiland, Richard M Harvey, Peter Hoffmann, Abiodun D Ogunniyi, James C Paton
Streptococcus pneumoniae (the pneumococcus) is a human pathogen, accounting for massive global morbidity and mortality. Although asymptomatic colonization of the nasopharynx almost invariably precedes disease, the critical determinants enabling pneumococcal progression from this niche to cause invasive disease are poorly understood. One mechanism proposed to be central to this transition involves opacity phase variation, whereby pneumococci harvested from the nasopharynx are typically transparent, while those simultaneously harvested from the blood are opaque...
May 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28550058/whole-genome-and-core-genome-multilocus-sequence-typing-and-single-nucleotide-polymorphism-analyses-of-listeria-monocytogenes-associated-with-an-outbreak-linked-to-cheese-united-states-2013
#2
Yi Chen, Yan Luo, Heather Carleton, Ruth Timme, David Melka, Tim Muruvanda, Charles Wang, George Kastanis, Lee S Katz, Lauren Turner, Angela Fritzinger, Terence Moore, Robert Stones, Joseph Blankenship, Monique Salter, Mickey Parish, Thomas S Hammack, Peter S Evans, Cheryl L Tarr, Marc W Allard, Errol A Strain, Eric W Brown
Epidemiological findings of a listeriosis outbreak in 2013 implicated Hispanic-style cheese produced by Company A, and pulsed-field gel electrophoresis (PFGE) and whole genome sequencing (WGS) were performed on clinical isolates and representative isolates collected from Company A cheese and environmental samples during the investigation. The results strengthened the evidence for cheese as the vehicle. Surveillance sampling and WGS three months later revealed that the equipment purchased by Company B from Company A yielded an environmental isolate highly similar to all outbreak isolates...
May 26, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28550057/prevalence-and-genomic-characterization-of-escherichia-coli-o157-h7-in-cow-calf-herds-throughout-california
#3
Jay N Worley, Kristopher A Flores, Xun Yang, Jennifer A Chase, Guojie Cao, Shuai Tang, Jianghong Meng, Edward R Atwill
Escherichia coli serotype O157:H7 (E. coli O157:H7) is a zoonotic food- and waterborne bacterial pathogen that has a high hospitalization rate and can cause life-threatening complications. Increasingly, E. coli O157:H7 infections appear to originate from fresh produce. Ruminants, like cattle, are a prominent reservoir of E. coli O157:H7 in the United States. California is one of the most agriculturally productive regions in the world for fresh produce, beef, and milk. The close proximity of fresh produce and cattle present food safety challenges on a uniquely large scale...
May 26, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28548686/studies-on-the-antibody-response-and-side-effects-after-intramuscular-and-intraperitoneal-injection-of-atlantic-lumpfish-cyclopterus-lumpus-l-with-different-oil-based-vaccines
#4
T Erkinharju, M R Lundberg, E Isdal, I Hordvik, R A Dalmo, T Seternes
Atlantic lumpfish (Cyclopterus lumpus L.) is used as a biological delousing agent for sea lice (Lepeophtheirus salmonis K.) infestations in Norwegian aquaculture. Here, we present a study on the antibody response and vaccine side effects after intramuscular and intraperitoneal injection of lumpfish with two vaccines. Both vaccines contained bacterial antigens from atypical Aeromonas salmonicida A-layer types V and VI, Vibrio anguillarum serotype O1 and Moritella viscosa sp., but one vaccine contained a vegetable oil-based adjuvant, while the other contained a mineral oil-based adjuvant...
May 26, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28546965/ribonuclease-from-bacillus-acts-as-an-antiviral-agent-against-negative-and-positive-sense-single-stranded-human-respiratory-rna-viruses
#5
Raihan Shah Mahmud, Christin Müller, Yulia Romanova, Ahmed Mostafa, Vera Ulyanova, Stephan Pleschka, Olga Ilinskaya
Bacillus pumilus ribonuclease (binase) was shown to be a promising antiviral agent in animal models and cell cultures. However, the mode of its antiviral action remains unknown. To assess the binase effect on intracellular viral RNA we have selected single stranded negative- and positive-sense RNA viruses, influenza virus, and rhinovirus, respectively, which annually cause respiratory illnesses and are characterized by high contagious nature, mutation rate, and antigen variability. We have shown that binase exerts an antiviral effect on both viruses at the same concentration, which does not alter the spectrum of A549 cellular proteins and expression of housekeeping genes...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28545925/peritoneal-b-1b-and-b-2-b-cells-confer-long-term-protection-from-pneumococcal-serotype-3-infection-after-vaccination-with-prevnar-13-and-are-defective-in-sickle-cell-disease-mice
#6
Christina Cotte, Steven M Szczepanek
Long-term immunity after inoculation with the pneumococcal conjugate vaccine (Prevnar-13) is impaired in sickle cell disease (SCD) mice. We sought to determine which B-cell subsets are defective in SCD mice after vaccination with Prevnar-13, yet confer long-term immunity in wild-type (WT) mice. We vaccinated WT and SCD mice three times at three week intervals with Prevnar-13. Fourteen weeks later, 5∗10(4) cells of isolated peritoneal B-1a, B-1b, and B-2 cells were harvested and intraperitoneally transferred to Rag -/- recipients...
May 22, 2017: Vaccine
https://www.readbyqxmd.com/read/28545528/comparison-of-biomarker-based-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry-maldi-tof-ms-and-conventional-methods-in-the-identification-of-clinically-relevant-bacteria-and-yeast
#7
Ali Kassim, Valentin Pflüger, Zul Premji, Claudia Daubenberger, Gunturu Revathi
BACKGROUND: MALDI-TOF MS is an analytical method that has recently become integral in the identification of microorganisms in clinical laboratories. It relies on databases that majorly employ pattern recognition or fingerprinting. Biomarker based databases have also been developed and there is optimism that these may be superior to pattern recognition based databases. This study compared the performance of ribosomal biomarker based MALDI-TOF MS and conventional methods in the identification of selected bacteria and yeast...
May 25, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28545090/neotropical-bats-that-co-habit-with-humans-function-as-dead-end-hosts-for-dengue-virus
#8
Amanda Vicente-Santos, Andres Moreira-Soto, Claudio Soto-Garita, Luis Guillermo Chaverri, Andrea Chaves, Jan Felix Drexler, Juan Alberto Morales, Alejandro Alfaro-Alarcón, Bernal Rodríguez-Herrera, Eugenia Corrales-Aguilar
Several studies have shown Dengue Virus (DENV) nucleic acids and/or antibodies present in Neotropical wildlife including bats, suggesting that some bat species may be susceptible to DENV infection. Here we aim to elucidate the role of house-roosting bats in the DENV transmission cycle. Bats were sampled in households located in high and low dengue incidence regions during rainy and dry seasons in Costa Rica. We captured 318 bats from 12 different species in 29 households. Necropsies were performed in 205 bats to analyze virus presence in heart, lung, spleen, liver, intestine, kidney, and brain tissue...
May 18, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28544099/genetic-signatures-coupled-with-lineage-shift-characterize-endemic-evolution-of-dengue-virus-serotype-2-during-2015-outbreak-in-delhi-india
#9
Manish Chandra Choudhary, Ekta Gupta, Shvetank Sharma, Nadeem Hasnain, Pragya Agarwala
OBJECTIVE: In 2015 New Delhi witnessed a massive outbreak of Dengue virus (DENV) resulting in high morbidity and mortality. We report the molecular characterization of the dominant circulating DENV strain to understand its evolution and dispersal. MATERIALS AND METHODS: DENV infections were diagnosed by detection of IgM/NS1 antigen and serotyping was performed by C-PrM PCR. Envelope gene was amplified and variation(s) in envelope gene were analyzed. Phylogenetic tree construction, time-based phylogeny and origin of DENV were analyzed...
May 23, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28542347/effectiveness-of-pneumococcal-vaccines-in-preventing-pneumonia-in-adults-a-systematic-review-and-meta-analyses-of-observational-studies
#10
Myint Tin Tin Htar, Anke L Stuurman, Germano Ferreira, Cristiano Alicino, Kaatje Bollaerts, Chiara Paganino, Ralf René Reinert, Heinz-Josef Schmitt, Cecilia Trucchi, Thomas Vestraeten, Filippo Ansaldi
INTRODUCTION: S. pneumoniae can cause a wide spectrum of diseases, including invasive pneumococcal disease and pneumonia. Two types of pneumococcal vaccines are indicated for use in adults: 23-valent pneumococcal polysaccharide vaccines (PPV23) and a 13-valent pneumococcal conjugate vaccine (PCV13). OBJECTIVE: To systematically review the literature assessing pneumococcal vaccine effectiveness (VE) against community-acquired pneumonia (CAP) in adults among the general population, the immunocompromised and subjects with underlying risk factors in real-world settings...
2017: PloS One
https://www.readbyqxmd.com/read/28539579/serotyping-and-genetic-characterization-of-hand-foot-and-mouth-disease-hfmd-associated-enteroviruses-of-no-ev71-and-non-cva16-circulating-in-fujian-china-2011-2015
#11
Yuwei Weng, Wei Chen, Wenxiang He, Meng Huang, Ying Zhu, Yansheng Yan
BACKGROUND Hand, foot, and mouth disease (HFMD) is a common contagious disease in infants; it is caused by multiple serotypes of human enterovirus (EV), which belongs to the enterovirus genus of the picornavirus family. According to sentinel surveillance, infection with EVs other than EV71 and CVA 16 have become increasingly common in recent years among HFMD patients, posing new challenges for HFMD control. This study aimed to explore the spectrum of serotypes in the other EVs (non-EV71 and non-CVA16) in Fujian province in southeastern China...
May 25, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28538501/invasive-pneumococcal-disease-in-patients-with-sickle-cell-disease
#12
Pournima Navalkele, Bülent Özgönenel, Eric McGrath, Paul Lephart, Sharada Sarnaik
BACKGROUND: Patients with sickle cell disease (SCD) are at risk of fatal sepsis with encapsulated bacteria, such as Streptococcus pneumoniae, because of the inherent autosplenectomy that occurs in SCD. This risk is thwarted with oral penicillin prophylaxis during the first 5 years of life, and with stringent vaccination against S. pneumoniae alongside routine childhood immunization. But compared with the general African American pediatric population, the rate of invasive pneumococcal disease (IPD) in patients with SCD still remains high, resulting in hospitalization and fatality...
May 22, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28538494/committee-opinion-no-704-summary-human-papillomavirus-vaccination
#13
(no author information available yet)
Human papillomavirus (HPV) is associated with anogenital cancer (including cervical, vaginal, vulvar, penile, and anal), oropharyngeal cancer, and genital warts. The HPV vaccination significantly reduces the incidence of anogenital cancer and genital warts. Despite the benefits of HPV vaccines, only 41.9% of girls in the recommended age group, and only 28.1% of males in the recommended age group have received all recom-mended doses. Compared with many other countries, HPV vaccination rates in the United States are unacceptably low...
June 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28537484/epidemiological-characterizations-pathogen-spectrum-and-molecular-characteristics-of-coxsackievirus-a16-from-patients-with-hfmd-in-yantai-shandong-china-between-2011-and-2015
#14
Zhenlu Sun, Guifang Zhang, Peijun Guo, Juan Liu, Qiao Gao, Xiaowen Xu, Lianfeng Gong
This study aimed to investigate the epidemiological characterizations and pathogen spectrum of hand, foot, and mouth disease (HFMD) in Yantai City, Shandong Province, China, during 2011-2015, and to study the nucleotide evolution and amino acid variation of coxsackievirus A16 (CV-A16) epidemic strains that caused HFMD. The HFMD epidemic began to rise in March, and became prevalent from May to August, reached its peak in June, and then declined in September every year, children aged one to five years-old had the highest incidence rate whereas the incidence in children under 6 months was very low, and there were more males than females...
May 24, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28537439/phenotypic-and-genotypic-characterization-of-clinical-enterotoxigenic-escherichia-coli-isolates-from-shenzhen-china
#15
Yinghui Li, Qiang Luo, Xiaolu Shi, Yiman Lin, Yaqun Qiu, Dongyue Lv, Yixiang Jiang, Qiongcheng Chen, Min Jiang, Hanwu Ma, Jinquan Cheng, Qinghua Hu
BACKGROUND: Enterotoxigenic Escherichia coli (ETEC) is one of the major causes of infectious diarrhea in developing countries. This study aimed to characterize the prevalence and phenotypic and genotypic features of ETEC isolates from Shenzhen, China. METHODS: ETEC isolates were obtained from acute diarrheal patients and evaluated for enterotoxin, classical colonization factors (CFs), serotypes, antimicrobial susceptibility, and multilocus sequencing typing (MLST)...
May 24, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28536674/anti-idiotypic-antibodies-specific-to-prm-monoantibody-prevent-antibody-dependent-enhancement-of-dengue-virus-infection
#16
Miao Wang, Fan Yang, Dana Huang, Yalan Huang, Xiaomin Zhang, Chao Wang, Shaohua Zhang, Renli Zhang
Dengue virus (DENV) co-circulates as four serotypes (DENV1-4). Primary infection only leads to self-limited dengue fever. But secondary infection with another serotype carries a higher risk of increased disease severity, causing life-threatening dengue hemorrhagic fever/dengue shock syndrome (DHF/DSS). Serotype cross-reactive antibodies facilitate DENV infection in Fc-receptor-bearing cells by promoting virus entry via Fcγ receptors (FcγR), a process known as antibody dependent enhancement (ADE). Most studies suggested that enhancing antibodies were mainly specific to the structural premembrane protein (prM) of DENV...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28535704/pneumococcal-conjugate-vaccines-in-latin-america-are-pcv10-and-pcv13-similar-in-terms-of-protection-against-serotype-19a
#17
Maria L Avila-Aguero, Rolando Ulloa-Gutierrez, Luiza H Falleiros-Arlant, Oscar Porras
No abstract text is available yet for this article.
May 24, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28534487/rules-of-engagement-between-%C3%AE-v%C3%AE-6-integrin-and-foot-and-mouth-disease-virus
#18
Abhay Kotecha, Quan Wang, Xianchi Dong, Serban L Ilca, Marina Ondiviela, Rao Zihe, Julian Seago, Bryan Charleston, Elizabeth E Fry, Nicola G A Abrescia, Timothy A Springer, Juha T Huiskonen, David I Stuart
Foot-and-mouth disease virus (FMDV) mediates cell entry by attachment to an integrin receptor, generally αvβ6, via a conserved arginine-glycine-aspartic acid (RGD) motif in the exposed, antigenic, GH loop of capsid protein VP1. Infection can also occur in tissue culture adapted virus in the absence of integrin via acquired basic mutations interacting with heparin sulphate (HS); this virus is attenuated in natural infections. HS interaction has been visualized at a conserved site in two serotypes suggesting a propensity for sulfated-sugar binding...
May 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28533052/reverse-spillover-of-avian-viral-vaccine-strains-from-domesticated-poultry-to-wild-birds
#19
M A Rohaim, R F El Naggar, A M Helal, H A Hussein, Muhammad Munir
Transmission of viruses from the commercial poultry to wild birds is an emerging paradigm of livestock-wildlife interface. Here, we report the identification and isolation of vaccine strains of avian paramyxovirus serotype 1 (APMV1) and avian coronaviruses (ACoV) from different wild bird species across eight Egyptian governorates between January 2014 and December 2015. Surveillance of avian respiratory viruses in free-ranging wild birds (n=297) identified three species that harboured or excreted APMV1 and ACoVs...
May 19, 2017: Vaccine
https://www.readbyqxmd.com/read/28532797/genetic-basis-for-loss-of-immuno-reactive-o-chain-in-salmonella-enterica-serovar-enteritidis-veterinary-isolates
#20
Istvan Szabo, Marianne Grafe, Nicole Kemper, Ernst Junker, Burkhard Malorny
Fifty-two rough Salmonella enterica serovar Enteritidis (S. Enteritidis) isolates from broilers and the environment were characterized for their serological and genotypic properties. Under routine diagnostic serotyping methods such isolates lack the immuno-reactivity of the O-chain of the lipopolysaccharide (LPS), and are referred to as non-typeable. Using a modified slide agglutination method, the isolates could be differentiated into three different serological variants. Twenty-six isolates (50%) were defined as semi-rough, nineteen isolates (37%) as deep-rough, four isolates (8%) as rough and three isolates could not be assigned...
May 2017: Veterinary Microbiology
keyword
keyword
68416
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"