Results 71 to 80 of about 451,443 (360)

Extracellular calcium reduction strongly increases the lytic capacity of pneumolysin from streptococcus pneumoniae in brain tissue [PDF]

, 2011
Background. Streptococcus pneumoniae causes serious diseases such as pneumonia and meningitis. Its major pathogenic factor is the cholesterol-dependent cytolysin pneumolysin, which produces lytic pores at high concentrations.
Asparouh I. Iliev, Ben-Abraham, Benz, Benz, Benz, Bereczki, Beurg, Braun, Carolin Wippel, Christina Förtsch, Cooper, Douce, Durand, Elke Maier, Fickl, Franco-Vidal, Förtsch, Hirst, Iliev, Iliev, Iliev, Jiangtao Ma, Johnson, Jones, Korchev, Korchev, Ohba, Orlov, Pandey, Reiss, Roland Benz, Sabrina Hupp, Somjen, Spreer, Stringaris, Tilley, Timothy J. Mitchell, Wellmer, Wood, Zaloga, Zefirov   +40 more
core   +3 more sources

Mercaptophenylboronic Acid‐Mediated Nanozyme Immunochromatographic Assay for Simultaneous Detection of Respiratory Bacteria and Virus

Advanced Science, EarlyView.
This study developes a universal colorimetric ICA platform that integrates broad‐spectrum recognition by 4‐mercaptophenylboronic acid with dual signal enhancement—both colorimetric and catalytic—mediated by a biomimetic magnetic nanozyme. This platform, for the first time, enables simple, convenient, ultrasensitive, and simultaneous screening of ...
Qing Yu, Jiaxuan Li, Shuai Zheng, Yajin Hu, Benshun Tian, Meirou Lu, Bing Gu, Chongwen Wang   +7 more
wiley   +1 more source

SeroBA: rapid high-throughput serotyping of Streptococcus pneumoniae from whole genome sequence data

bioRxiv, 2017
Streptococcus pneumoniae is responsible for 240,000 - 460,000 deaths in children under 5 years of age each year. Accurate identification of pneumococcal serotypes is important for tracking the distribution and evolution of serotypes following the ...
Lennard Epping, Andries J. van Tonder, R. Gladstone, S. Bentley, A. Page, Jacqueline A. Keane   +5 more
semanticscholar   +1 more source

Horizontal DNA transfer mechanisms of bacteria as weapons of intragenomic conflict [PDF]

, 2016
Horizontal DNA transfer (HDT) is a pervasive mechanism of diversification in many microbial species, but its primary evolutionary role remains controversial.
A Adams, A Adams, AB Dalia, AI Khan, B Martin, BJ Haijema, BR Levin, C Boutry, C Buchrieser, C Camacho, C Canchaya, C Chewapreecha, C Fraser, C Johnston, C Johnston, C Johnston, Christophe Fraser, Christopher Wymant, CS Wylie, D Dubnau, D Hyatt, DA Baltrus, DA Caugant, DA Higgins, DA Morrison, DA Morrison, DE Fouts, DJP Engelmoer, E Borezee, E Szathmáry, E V Pestova, E Zaccaria, EA Campbell, EJ Feil, EJ Gaasbeek, EJ Gaasbeek, EP Rocha, ES Antonova, F Ginetti, F Griffith, F Liu, GG Wilson, GJ Stewart, GM Süel, GW Goldberg, H Bagci, H Bernstein, H Deveau, H Li, H Maamar, H Muller, H Ochman, H Tong, H-H Chou, HC Neu, I Chen, I Mortier-Barriere, I Mortier-Barrière, J Bondy-Denomy, J Guglielmini, J Majewski, J Majewski, J-P Claverys, JA Lanie, JA Londoño-Vallejo, JA Mongold, JC Lefevre, JC Mell, JH Stuy, JJ Sakamoto, JK Setlow, JM Auchtung, JM Musser, JM Smith, JM Smith, JO McInerney, JP Claverys, JP Claverys, JT Simpson, JW Beaber, K Turgay, KS Makarova, KT Konstantinidis, L Attaiech, L Fontaine, L Van Valen, L-M Bobay, LP Macfadyen, LS Frost, LS Håvarstein, LS Håvarstein, M Berge, M Boetzer, M Del Grosso, M Prudhomme, M Ramirez, MA Hoelzer, ME Kahn, MF Wojciechowski, MJ Lopez-Sanchez, ML Gwinn, MR Oggioni, MS Dorer, MTG Holden, Nicholas J. Croucher, Nick H. Barton, NJ Croucher, NJ Croucher, NJ Croucher, NJ Croucher, NJ Croucher, NJ Croucher, NJ Croucher, NJ Croucher, NJ Croucher, NJ Croucher, O Johnsborg, OE Cornejo, OH Ambur, OT Avery, P Glaser, P Jorth, P Luo, PA Levin, Paul Turner, PJ Johnsen, R Davidoff-Abelson, R Edgar, R Mostowy, RA Fisher, Rafal Mostowy, RE Michod, RE Yasbin, RJ Redfield, RJ Redfield, RJ Redfield, RJ Redfield, RJ Redfield, RJ Redfield, RK Aziz, RP Novick, S Lacks, SA McMahon, SB Beres, SE Finkel, SJ Labrie, SP Otto, Stephen D. Bentley, T Carver, T Nozawa, U Munoz-Najar, WA Sweetman, WJ Kent, X Charpentier, X Charpentier, X Didelot, Y Li, Z Zhou   +157 more
core   +3 more sources

A Novel nor@DHB Matrix for Direct Microbial Analysis in Lung Cancer Tissues

Advanced Science, EarlyView.
Integrated matrix‐assisted laser desorption/ionization mass spectrometry workflow quantifies intratumoral microbes in lung cancer through lipopolysaccharide/lipid A extraction from biopsies. The novel ionic matrix called norharmane conjugated to 2,5‐dihydroxybenzoic acid enhances lipid A ionization, enabling direct detection of bacterial genera ...
Liang Shan, Xin Xu, Lin Huang, Dan Li, Yiran Deng, Xiangfei Xue, Susu Guo, Yiman Huang, Xiao Zhang, Yongchun Yu, Lifang Ma, Kun Qian, Jiayi Wang   +12 more
wiley   +1 more source

Serotypes and antimicrobial resistance of meningeal isolates of Streptococcus pneumonia. Cuba, 2007-2012

VacciMonitor, 2014
An observational study was conducted to know the serotypes and antimicrobial susceptibility of isolates of Streptococcus pneumoniae responsible for meningitis in Cuba, where there is no vaccine yet to prevent invasive pneumococcal disease.
Gilda Toraño-Peraza, Lisania Pías-Solis, Miriam Abreu-Capote, Misladys Rodríguez-Ortega, Félix Dickinson- Meneses, Marlen Varcárcel-Sánchez   +5 more
doaj  

Revisitingmolecular serotyping of Streptococcus pneumoniae [PDF]

BMC Genomics, 2015
Ninety-two Streptococcus pneumoniae serotypes have been described so far, but the pneumococcal conjugate vaccine introduced in the Brazilian basic vaccination schedule in 2010 covers only the ten most prevalent in the country. Pneumococcal serotype-shifting after massive immunization is a major concern and monitoring this phenomenon requires efficient ...
Roney S. Coimbra, Marluce Aparecida Assunção Oliveira, Dhian R A Camargo, Fabiano Sviatopolk-Mirsky Pais, Fabiano Sviatopolk-Mirsky Pais, Ângela C. Volpini, Ângela C. Volpini   +6 more
openaire   +3 more sources

Case Report: Unusual Neurological Features of Leigh Syndrome due to m.8993T>G Pathogenic Variant in the MT‐ATP6 Gene

American Journal of Medical Genetics Part A, EarlyView.
ABSTRACT The MT‐ATP6 gene m.8993T>G pathogenic variant has been associated with Leigh syndrome, especially in patients exhibiting a high degree of heteroplasmy. Although patients may present with a wide phenotypic spectrum, characteristic findings include bilateral, symmetric hyperintensities in the basal ganglia and brainstem on brain MRI ...
Ramya Treitel, Julie McLaughlin, Marta Frigeni   +2 more
wiley   +1 more source

Quorum Sensing Regulation of Competence and Bacteriocins in Streptococcus pneumoniae and mutans

Genes, 2017
The human pathogens Streptococcus pneumoniae and Streptococcus mutans have both evolved complex quorum sensing (QS) systems that regulate the production of bacteriocins and the entry into the competent state, a requirement for natural transformation ...
Erin Shanker, Michael J. Federle
semanticscholar   +1 more source

A role for Streptococcus pneumoniae in virus-associated pneumonia [PDF]

Nature Medicine, 2004
Here we show, in a double-blind, randomized, placebo-controlled trial in 37,107 fully immunized infants in Soweto, South Africa, that a 9-valent pneumococcal conjugate vaccine, PncCV, prevents 31% (95% confidence interval = 15-43%) of pneumonias associated with any of seven respiratory viruses in children in hospital.
Shabir A. Madhi, Keith P. Klugman, Keith P. Klugman   +2 more
openaire   +2 more sources