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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 Parasit+Vectors
2015 ; 8
(ä): 577
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English Wikipedia
Hepatic myofibroblasts derived from Schistosoma mansoni-infected mice are a
source of IL-5 and eotaxin: controls of eosinophil populations in vitro
#MMPMID26552582
Paiva LA
; Brand C
; Bandeira-Melo C
; Bozza PT
; El-Cheikh MC
; Silva PM
; Borojevic R
; Perez SA
Parasit Vectors
2015[Nov]; 8
(ä): 577
PMID26552582
show ga
BACKGROUND: Hepatic myofibroblasts are relevant for pathogenesis of S. mansoni
infection. In normal liver, these perisinusoidal cells are quiescent, express the
lipocyte phenotype, and are located in the Disse's space, being the major site of
vitamin A storage. When activated, they convert to myofibroblasts and contribute
to granulomatous and diffuse liver fibrosis. In the present work, we observed
that myofibroblasts obtained from granulomatous periovular inflammatory reactions
in schistosome-infected mice (GR-MF) produce in vitro immunomodulatory cytokines
for eosinophil activation: IL-5 and eotaxin. METHODS AND RESULTS: The secretory
activity of GR-MF was detected after TGF-? and IL-13 stimulation using 2D and 3D
cell culture systems. In a mixed co-culture system using GR-MF with hematopoietic
bone marrow cells from infected mice, we observed eosinophil survival that was
dependent upon IL-5 and eotaxin, since antibodies against this cytokines
decreased eosinophil population, as measured by eosinophil peroxidase activity.
CONCLUSION: These results indicate that GR-MF may contribute to maintenance of
local eosinophilia in schistosomal hepatic granulomas, and can function as
immunoregulatory cells, besides their role in production of fibrosis.