کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6116774 | 1216390 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Upregulation of the inhibitory receptor ILT4 in monocytes from septic patients
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کلمات کلیدی
LPSPBMCFITCAPCSAPS IIILT4PC5peripheral blood mononuclear cells - سلول های تک هسته ای خون محیطیantigen presenting cell - سلولهای پردازنده آنتیژنphycoerythrin - فایکوئیریدینfluorescein isothiocyanate - فلوئورسین ایسوتیوسیاناتlipopolysaccharide - لیپوپلی ساکاریدsimplified acute physiology score - نمره فیزیولوژیک حاد ساده شدهSequential Organ Failure Assessment score - نمره نقص ارزیابی ارگانهای متوالیSOFA - کاناپه
موضوعات مرتبط
علوم زیستی و بیوفناوری
ایمنی شناسی و میکروب شناسی
ایمونولوژی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Sepsis-induced immune dysfunction is a complex phenomenon that involves both innate and adaptive responses. Upregulation of the inhibitor receptor named immunoglobulin like transcript 4 (ILT4) is crucial to the tolerogenic function of monocytes. Here, ILT4 expression, endotoxin-induced IL-12 and IL-10 production and CD86 expression were investigated in circulating monocytes from 16 patients with severe sepsis and 16 age and sex matched controls. We found that monocytes from patients with severe sepsis express significantly higher levels of ILT4 than monocytes from controls. Upregulation of ILT4 expression appeared to be induced by soluble factors present in the serum of septic patients and directly correlated with the degree of organ dysfunction. ILT4+ monocytes from septic patients also displayed an alteration in the cytokine response to endotoxin stimulation characterized by reduced IL-12 production and increased IL-10 production, and a reduced expression of the costimulatory molecule CD86. In conclusion, the increased ILT4 expression and IL-10 production and the decreased CD86 expression and IL-12 production indicate that during sepsis monocytes undergo substantial modulation of the surface and cytokine phenotype. These phenotypic changes may interfere with the antigen presenting cell activity of monocytes, which may contribute to the impairment of adaptive immune responses that takes place during sepsis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Human Immunology - Volume 74, Issue 10, October 2013, Pages 1244-1250
Journal: Human Immunology - Volume 74, Issue 10, October 2013, Pages 1244-1250
نویسندگان
Eleonora Baffari, Diego Fiume, Giordana Caiazzo, Anna Sinistro, Silvia Natoli, Cristiana Almerighi, Francesca Calò-Carducci, Francesca Leonardis, Alberto Bergamini,