Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=26843331
&cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 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\26843331
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Immunol
2016 ; 196
(6
): 2742-52
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Resolvin D1 Dampens Pulmonary Inflammation and Promotes Clearance of Nontypeable
Haemophilus influenzae
#MMPMID26843331
Croasdell A
; Lacy SH
; Thatcher TH
; Sime PJ
; Phipps RP
J Immunol
2016[Mar]; 196
(6
): 2742-52
PMID26843331
show ga
Nontypeable Haemophilus influenzae (NTHi) is a Gram-negative, opportunistic
pathogen that frequently causes ear infections, bronchitis, pneumonia, and
exacerbations in patients with underlying inflammatory diseases, such as chronic
obstructive pulmonary disease. In mice, NTHi is rapidly cleared, but a strong
inflammatory response persists, underscoring the concept that NTHi induces
dysregulation of normal inflammatory responses and causes a failure to resolve.
Lipid-derived specialized proresolving mediators (SPMs) play a critical role in
the active resolution of inflammation by both suppressing proinflammatory actions
and promoting resolution pathways. Importantly, SPMs lack the immunosuppressive
properties of classical anti-inflammatory therapies. On the basis of these
characteristics, we hypothesized that aspirin-triggered resolvin D1 (AT-RvD1)
would dampen NTHi-induced inflammation while still enhancing bacterial clearance.
C57BL/6 mice were treated with AT-RvD1 and infected with live NTHi.
AT-RvD1-treated mice had lower total cell counts and neutrophils in
bronchoalveolar lavage fluid, and had earlier influx of macrophages. In addition,
AT-RvD1-treated mice showed changes in temporal regulation of inflammatory
cytokines and enzymes, with decreased KC at 6 h and decreased IL-6, TNF-?, and
cyclooxygenase-2 expression at 24 h post infection. Despite reduced inflammation,
AT-RvD1-treated mice had reduced NTHi bacterial load, mediated by enhanced
clearance by macrophages and a skewing toward an M2 phenotype. Finally, AT-RvD1
protected NTHi-infected mice from weight loss, hypothermia, hypoxemia, and
respiratory compromise. This research highlights the beneficial role of SPMs in
pulmonary bacterial infections and provides the groundwork for further
investigation into SPMs as alternatives to immunosuppressive therapies like
steroids.