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2014 ; 16
(6
): 502-11
Nephropedia Template TP
gab.com Text
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English Wikipedia
Extracellular traps are associated with human and mouse neutrophil and macrophage
mediated killing of larval Strongyloides stercoralis
#MMPMID24642003
Bonne-Année S
; Kerepesi LA
; Hess JA
; Wesolowski J
; Paumet F
; Lok JB
; Nolan TJ
; Abraham D
Microbes Infect
2014[Jun]; 16
(6
): 502-11
PMID24642003
show ga
Neutrophils are multifaceted cells that are often the immune system's first line
of defense. Human and murine cells release extracellular DNA traps (ETs) in
response to several pathogens and diseases. Neutrophil extracellular trap (NET)
formation is crucial to trapping and killing extracellular pathogens. Aside from
neutrophils, macrophages and eosinophils also release ETs. We hypothesized that
ETs serve as a mechanism of ensnaring the large and highly motile helminth
parasite Strongyloides stercoralis thereby providing a static target for the
immune response. We demonstrated that S. stercoralis larvae trigger the release
of ETs by human neutrophils and macrophages. Analysis of NETs revealed that NETs
trapped but did not kill larvae. Induction of NETs was essential for larval
killing by human but not murine neutrophils and macrophages in vitro. In mice,
extracellular traps were induced following infection with S. stercoralis larvae
and were present in the microenvironment of worms being killed in vivo. These
findings demonstrate that NETs ensnare the parasite facilitating larval killing
by cells of the immune system.