Culture and phenotype of activated T-cells from patients with type I diabetes mellitus.

Abstract:

:Blood T-cells from 28 patients with type I (insulin-dependent) diabetes (IDDM) of variable duration were examined for the Tac antigen by immunofluorescence, and for proliferation in the presence of interleukin 2 (IL 2). The mean percentage of Tac+ cells in patients whose IDDM was of less than 2-yr duration was 6.2% compared with 2% in patients whose IDDM was of 3 or more years' duration, or in healthy controls. The percentage of Tac+ cells in the patients' blood correlated positively with the amount of thymidine uptake in a 24-h culture of blood mononuclear cells and with the percentage of T-cell blasts generated in a 6-day culture. The patients' T-cell blasts stained with OKT 4 or OKT 8, suggesting that each of these subsets is present in the activated T-cell population in the patients' blood. The T-cell blasts did not show specificity for pork insulin in an antigen restimulation assay. There was no correlation between increased Tac+ cells and the presence or absence of islet cell antibodies. If T-cell activation in IDDM occurs as a result of recognition of islet cell antigens, our results suggest that both HLA-DR-restricted (OKT 4+) and A-, B-, and C-restricted (OKT 8+) T-cell subsets contribute.

journal_name

Diabetes

journal_title

Diabetes

authors

Hayward AR,Herberger M

doi

10.2337/diab.33.4.319

subject

Has Abstract

pub_date

1984-04-01 00:00:00

pages

319-23

issue

4

eissn

0012-1797

issn

1939-327X

journal_volume

33

pub_type

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