Abstract:
:Peroxisome proliferator-activated receptors (PPAR)α have been shown to exert immunomodulatory effects in autoimmune disorders; no study evaluated the effect of PPARα activation in Graves' ophthalmopathy (GO). We show the presence of PPARα, δ and γ in GO fibroblasts and preadipocytes. PPARα activators have a potent inhibitory action on the secretion of CXCL9 and CXCL11 chemokines (induced by IFNγ and TNFα) in fibroblasts and preadipocytes. The potency of the used PPARα agonists was maximum on the secretion of CXCL11 (67% inhibition by fenofibrate) in fibroblasts. The relative potency of the compounds in GO fibroblasts was different with each chemokine. PPARα agonists were stronger inhibitors of CXCL9 and CXCL11 (in GO fibroblasts and preadipocytes) than PPARγ activators. This study first shows that PPARα activators inhibit CXCL9 and CXCL11 chemokines in normal and GO fibroblasts and preadipocytes, suggesting that PPARα may be involved in the modulation of the immune response in GO.
journal_name
Mol Cell Endocrinoljournal_title
Molecular and cellular endocrinologyauthors
Antonelli A,Ferrari SM,Frascerra S,Ruffilli I,Gelmini S,Minuto M,Pupilli C,Miccoli P,Sellari-Franceschini S,Ferrannini E,Fallahi Pdoi
10.1016/j.mce.2011.11.001subject
Has Abstractpub_date
2012-02-26 00:00:00pages
255-61issue
2eissn
0303-7207issn
1872-8057pii
S0303-7207(11)00654-Xjournal_volume
349pub_type
杂志文章abstract::Lipotoxic injury of pancreatic β cells is an important pathological feature in type 2 diabetes mellitus (T2DM). Stimulator of interferon genes (STING) can recognize its own DNA leaked into the cytoplasm from damaged mitochondria or nuclei of the host cell, thus activating its downstream factor interferon regulatory fa...
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