Effect of the glycemic control on intracellular cytokine production from peripheral blood mononuclear cells of type 1 and type 2 diabetic patients.
OBJECTIVE
To evaluate the intracellular production of tumor necrosis factor (TNF-alpha), interleukine-6 (IL-6), INF-gamma, IL-8 and IL-10 in peripheral blood lymphomononuclear cells from type 1 and type 2 diabetic patients, stratified according to the glycemic control.


METHODS
Thirty-five diabetic patients (17 type 1 and 18 type 2) and nine healthy individuals paired to patients in terms of sex and age were studied. Nine patients of each group were on inadequate glycemic controls. Intracellular cytokines were evaluated using flow cytometry. Cell cultures were stimulated with LPS to evaluate TNF-alpha and IL-6 or with PMA and Ionomycin to evaluate IFN-gamma, IL-8 and IL-10 intracellular staining.


RESULTS
The percentages of CD33(+) cells bearing TNF-alpha and CD3(+) cells bearing IL-10 were increased in type 1 diabetic patients with inadequate glycemic control in relation to those with adequate control. In contrast, the percentage of CD3(+) cells bearing IL-8 was decreased in type 2 patients under inadequate glycemic control.


CONCLUSIONS
The glycemic control is important for the detection of intracellular cytokines, and may contribute towards the susceptibility to infections in diabetic patients.
Division of Endocrinology and Metabolism, Department of Medicine, Ribeirão Preto Medical School, São Paulo University, Brazil.
M C
MC
Foss-Freitas
N T
NT
Foss
E A
EA
Donadi
M C
MC
Foss
D000328:Adult; D000368:Aged; D015703:Antigens, CD; D015214:Antigens, Differentiation, Myelomonocytic; D001773:Blood Cells; D001786:Blood Glucose / Q000032:analysis / Q000276:immunology*; D017252:CD3 Complex; D016022:Case-Control Studies; D002478:Cells, Cultured; D016207:Cytokines / Q000096:biosynthesis*; D003922:Diabetes Mellitus, Type 1 / Q000097:blood / Q000276:immunology*; D003924:Diabetes Mellitus, Type 2 / Q000097:blood / Q000276:immunology*; D005260:Female; D006442:Glycated Hemoglobin / Q000032:analysis / Q000276:immunology; D006801:Humans; D007371:Interferon-gamma; D007378:Interleukins / Q000032:analysis; D007963:Leukocytes, Mononuclear / Q000276:immunology*; D008070:Lipopolysaccharides / Q000494:pharmacology; D008297:Male; D008875:Middle Aged; D063268:Sialic Acid Binding Ig-like Lectin 3; D014409:Tumor Necrosis Factor-alpha / Q000032:analysis; D055815:Young Adult
D015703:Antigens, CD; D015214:Antigens, Differentiation, Myelomonocytic; D001786:Blood Glucose; D017252:CD3 Complex; D016207:Cytokines; D006442:Glycated Hemoglobin; D007371:Interferon-gamma; D007378:Interleukins; D008070:Lipopolysaccharides; D063268:Sialic Acid Binding Ig-like Lectin 3; D014409:Tumor Necrosis Factor-alpha; C571163:CD33 protein, human