Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\28576979
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Immunol
2017 ; 199
(1
): 107-118
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Controlled Human Malaria Infection Leads to Long-Lasting Changes in Innate and
Innate-like Lymphocyte Populations
#MMPMID28576979
Mpina M
; Maurice NJ
; Yajima M
; Slichter CK
; Miller HW
; Dutta M
; McElrath MJ
; Stuart KD
; De Rosa SC
; McNevin JP
; Linsley PS
; Abdulla S
; Tanner M
; Hoffman SL
; Gottardo R
; Daubenberger CA
; Prlic M
J Immunol
2017[Jul]; 199
(1
): 107-118
PMID28576979
show ga
Animal model studies highlight the role of innate-like lymphocyte populations in
the early inflammatory response and subsequent parasite control following
Plasmodium infection. IFN-? production by these lymphocytes likely plays a key
role in the early control of the parasite and disease severity. Analyzing human
innate-like T cell and NK cell responses following infection with Plasmodium has
been challenging because the early stages of infection are clinically silent. To
overcome this limitation, we examined blood samples from a controlled human
malaria infection (CHMI) study in a Tanzanian cohort, in which volunteers
underwent CHMI with a low or high dose of Plasmodium falciparum sporozoites. The
CHMI differentially affected NK, NKT (invariant NKT), and mucosal-associated
invariant T cell populations in a dose-dependent manner, resulting in an altered
composition of this innate-like lymphocyte compartment. Although these
innate-like responses are typically thought of as short-lived, we found that
changes persisted for months after the infection was cleared, leading to
significantly increased frequencies of mucosal-associated invariant T cells 6 mo
postinfection. We used single-cell RNA sequencing and TCR ??-chain usage analysis
to define potential mechanisms for this expansion. These single-cell data suggest
that this increase was mediated by homeostatic expansion-like mechanisms.
Together, these data demonstrate that CHMI leads to previously unappreciated
long-lasting alterations in the human innate-like lymphocyte compartment. We
discuss the consequences of these changes for recurrent parasite infection and
infection-associated pathologies and highlight the importance of considering host
immunity and infection history for vaccine design.