Advanced glycation end products-induced TNF-? and IL-6 production by peripheral lymphocytes of diabetic patients / 中国糖尿病杂志

ABSTRACT

Objective To investigate whether AGEs stimulate human lymphocytes to produce cytokines and whether the immune response to AGEs stimulation is the same or not in diabetics and normal subjects.Methods Venous blood was collected from 55 normal subjects and 50 diabetic patients.The blood sample was mixed in 1640 culture medium with 10?g/ml PHA or 20?g/ml AGEs respectively for 24 hours incubation.TNF-? and IL-6 of the medium were determined by ELISA test kit.Results After 24 hours incubation,AGEs-induced TNF-? production in diabetic patients and normal subjects was 473.20?66.93pg/ml vs 254.62?35.14pg/ml ( P 0.05).There was no relation of higher cytokine production with course of diabetes,glycemia levels,body weight and sex.Conclusion The above results demonstrated that (1) AGEs do stimulate human lymphocytes to produce TNF-? and IL-6;(2)The immune response to AGEs and PHA was more sensitive in diabetics,at least partially,than that in normal subjects;(3)It seems that the sensitive response to AGEs stimulation has no relation with course of diabetes,glycemia levels,body weight and sex in tested individuals.Our findings imply the possibility that immune response to AGEs of diabetic individual can be studied by this method.The sensitive response to AGEs stimulation in diabetes may be an independent risk factor involved in diabetic complications.