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2017 ; 3
(3
): ä Nephropedia Template TP
gab.com Text
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English Wikipedia
Conserved Inhibition of Neutrophil Extracellular Trap Release by Clinical Candida
albicans Biofilms
#MMPMID28944225
Kernien JF
; Johnson CJ
; Nett JE
J Fungi (Basel)
2017[Sep]; 3
(3
): ä PMID28944225
show ga
Candida albicans biofilms are difficult to eradicate due to their resistance to
host defenses and antifungal drugs. Although neutrophils are the primary
responder to C. albicans during invasive candidiasis, biofilms resist killing by
neutrophils. Prior investigation, with the commonly used laboratory strain
SC5314, linked this phenotype to the impaired release of neutrophil extracellular
traps (NETs), which are structures of DNA, histones, and antimicrobial proteins
involved in extracellular microbial killing. Considering the diversity of C.
albicans biofilms, we examined the neutrophil response to a subset of clinical
isolates forming biofilms with varying depths and architectures. Using
fluorescent staining of DNA and scanning electron microscopy, we found that
inhibition of NET release was conserved across the clinical isolates. However,
the dampening of the production of reactive oxygen species (ROS) by neutrophils
was strain-dependent, suggesting an uncoupling of ROS and NET inhibition. Our
findings show that biofilms formed by clinical C. albicans isolates uniformly
impair the release of NETs. Further investigation of this pathway may reveal
novel approaches to augment immunity to C. albicans biofilm infections.