Nonencapsulated Streptococcus pneumoniae resists extracellular human neutrophil elastase- and cathepsin G-mediated killing
until further notice
SourceFEMS Immunology and Medical Microbiology, 66, 3, (2012), pp. 445-448
Article / Letter to editor
Display more detailsDisplay less details
Laboratory of Genetic, Endocrine and Metabolic Diseases
Paediatrics - OUD tm 2017
FEMS Immunology and Medical Microbiology
SubjectN4i 1: Pathogenesis and modulation of inflammation; N4i 1: Pathogenesis and modulation of inflammation NCMLS 1: Infection and autoimmunity
Although the Streptococcus pneumoniae polysaccharide capsule is an important virulence factor, ~ 15% of carriage isolates are nonencapsulated. Nonencapsulated S. pneumoniae are a cause of mucosal infections. Recent studies have shown that neutrophils kill S. pneumoniae predominately through neutrophil proteases, such as elastase and cathepsin G. Another recent finding is that nonencapsulated pneumococci have greater resistance to resist cationic antimicrobial peptides that are important in mucosal immunity. We here show that nonencapsulated pneumococci have greater resistance to extracellular human neutrophil elastase- and cathepsin G-mediated killing than isogenic encapsulated pneumococci. Resistance to extracellular neutrophil protease-mediated killing is likely to be of greater relative importance on mucosal surfaces compared to other body sites.
Upload full text
Use your RU credentials (u/z-number and password) to log in with SURFconext to upload a file for processing by the repository team.