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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Antimicrob+Agents+Chemother
2011 ; 55
(5
): 2276-81
Nephropedia Template TP
gab.com Text
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English Wikipedia
Immunotherapy with a combination of intravenous immune globulin and p4 peptide
rescues mice from postinfluenza pneumococcal pneumonia
#MMPMID21383090
Weeks JN
; Boyd KL
; Rajam G
; Ades EW
; McCullers JA
Antimicrob Agents Chemother
2011[May]; 55
(5
): 2276-81
PMID21383090
show ga
Alternate therapies are needed for treatment of secondary bacterial pneumonia
following influenza. The immunomodulatory peptide P4 has shown promise in mouse
models of primary pneumococcal infection. Mice infected with influenza virus and
then challenged with Streptococcus pneumoniae were treated with a combination of
P4 peptide and intravenous immune globulin. Survival was improved from 20% to 80%
in treated mice relative to controls. Clinical cure correlated with increased
clearance of bacteria and decreased lung consolidation. Greater trafficking of
professional phagocytic cells to the site of pneumococcal infection coupled with
enhanced opsonophagocytosis as manifest by decreased surface display of Fc?
receptors (Fc?R) on neutrophils and macrophages were associated with P4 peptide
treatment. This suggests that the mechanism of action for improved clearance of
bacteria engendered by P4 is through improved uptake by phagocytes mediated by
IgG Fc-Fc? receptor interactions following antibody-mediated opsonophagocytosis
of bacteria. Antibody-based therapies, when coupled with immune modulators, such
as P4 peptide, may be an effective tool together with antibiotics in our
armamentarium against severe pneumonia.
|Animals
[MESH]
|Female
[MESH]
|Immunoglobulins, Intravenous/*therapeutic use
[MESH]