Diabetes, Vol 37, Issue 6 792-795, Copyright © 1988 by American Diabetes Association
Two-color flow cytometry analysis of activated T-lymphocyte subsets in type I diabetes mellitus
CM Legendre, A Schiffrin, G Weitzner, E Colle and RD Guttmann
Transplantation Service, Royal Victoria Hospital, Montreal, Quebec, Canada.
We addressed the question of whether newly diagnosed type I
(insulin-dependent) diabetes mellitus patients showed an increased number
of DR (la+) T-lymphocytes compared with nondiabetic siblings and normal
control subjects. Two-color flow cytometry measurements of peripheral-blood
lymphocytes showed a slight but statistically significant increase in DR+
T-lymphocytes in diabetic subjects as well as the nondiabetic sibling
control compared with the normal control subjects. This difference was not
present in long-term-diabetic subjects. Thus, in addition to minor changes
in this lymphocyte subset in peripheral blood, the sibling data demonstrate
a lack of specificity for the disease; therefore, these measurements are
probably of limited diagnostic usefulness.