نتایج جستجو برای: typeable haemophilus influenzae

تعداد نتایج: 10114  

2015
John M Atack Yogitha N Srikhanta Kate L Fox Joseph A Jurcisek Kenneth L Brockman Tyson A Clark Matthew Boitano Peter M Power Freda E-C Jen Alastair G McEwan Sean M Grimmond Arnold L Smith Stephen J Barenkamp Jonas Korlach Lauren O Bakaletz Michael P Jennings

Non-typeable Haemophilus influenzae contains an N(6)-adenine DNA-methyltransferase (ModA) that is subject to phase-variable expression (random ON/OFF switching). Five modA alleles, modA2, modA4, modA5, modA9 and modA10, account for over two-thirds of clinical otitis media isolates surveyed. Here, we use single molecule, real-time (SMRT) methylome analysis to identify the DNA-recognition motifs ...

2012
Gerhard Grevers Susanne Wiedemann Jan-Christof Bohn Rolf-Werner Blasius Thomas Harder Werner Kroeniger Volker Vetter Jean-Yves Pirçon Cinzia Marano

BACKGROUND Acute Otitis Media (AOM) is an important and common disease of childhood. Bacteria isolated from cases of clinically problematic AOM in German children were identified and characterized. METHODS In a prospective non-interventional study in German children between 3 months and less than 60 months of age with Ear, Nose and Throat Specialist -confirmed AOM, middle ear fluid was obtain...

2012
Laura Naranjo Jose Antonio Suarez Rodrigo DeAntonio Francis Sanchez Alberto Calvo Enza Spadola Nicolás Rodríguez Omaira Andrade Francisca Bertuglia Nelly Márquez Maria Mercedes Castrejon Eduardo Ortega-Barria Romulo E Colindres

BACKGROUND Non-typeable Haemophilus influenzae (NTHi) and Streptococcus pneumoniae are major causes of bacterial acute otitis media (AOM). Data regarding AOM are limited in Latin America. This is the first active surveillance in a private setting in Venezuela to characterize the bacterial etiology of AOM in children < 5 years of age. METHODS Between December 2008 and December 2009, 91 AOM epi...

Journal: :International journal of medical microbiology : IJMM 2012
Can M Unal Birendra Singh Christophe Fleury Kalpana Singh Luis Chávez de Paz Gunnel Svensäter Kristian Riesbeck

Non-typeable Haemophilus influenzae (NTHi) is a common pathogen associated with diseases such as acute otitis media or exacerbations in patients with chronic obstructive pulmonary disease. The biofilm-forming capability substantially contributes to the persistence of NTHi. However, the regulation of biofilm formation is not completely understood. Quorum sensing regulated by autoinducer-2 produc...

2014
Jeroen D. Langereis Jeffrey N. Weiser

Nontypeable Haemophilus influenzae is a frequent cause of noninvasive mucosal inflammatory diseases but may also cause invasive diseases, such as sepsis and meningitis, especially in children and the elderly. Infection by nontypeable Haemophilus influenzae is characterized by recruitment of neutrophilic granulocytes. Despite the presence of a large number of neutrophils, infections with nontype...

Journal: :Expert review of vaccines 2003
A Ruth Foxwell Jennelle M Kyd Allan W Cripps

Bacterial respiratory diseases remain a major cause of morbidity and mortality throughout the world. The young and the elderly are particularly susceptible to the pathogens that cause these diseases. Therapeutic approaches remain dependent upon antibiotics contributing to the persistent increases in antibiotic resistance. The main causes of respiratory disease discussed in this review are Mycob...

Journal: :International microbiology : the official journal of the Spanish Society for Microbiology 2014
Denis A Spricigo Pilar Cortés David Moranta Jordi Barbé José Antonio Bengoechea Montserrat Lagostera

Non-typeable Haemophilus influenzae (NTHi) is an opportunist pathogen well adapted to the human upper respiratory tract and responsible for many respiratory diseases. In the human airway, NTHi is exposed to pollutants, such as alkylating agents, that damage its DNA. In this study, we examined the significance of genes involved in the repair of DNA alkylation damage in NTHi virulence. Two knocko...

2011
Cara F. Clementi Timothy F. Murphy

Non-typeable Haemophilus influenzae (NTHI) is an opportunistic bacterial pathogen of the human respiratory tract and is a leading cause of respiratory infections in children and adults. NTHI is considered to be an extracellular pathogen, but has consistently been observed within and between human respiratory epithelial cells and macrophages, in vitro and ex vivo. Until recently, few studies hav...

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