Insulin binding to circulating monocytes in children with insulin-dependent and non-insulin-dependent diabetes mellitus.
This study describes insulin binding to circulating monocytes in 24 children with insulin-dependent diabetes mellitus (IDDM), five children with non-insulin-dependent diabetes mellitus (NIDDM), and 10 healthy and 12 obese control children. Insulin binding to monocytes was greatly increased in untreated IDDM children with obvious ketoacidosis (5.51 +/- 3.49 vs. 1.91 +/- 0.47 pg/10(6) cells, P less than 0.01), whereas it was decreased in those without obvious ketoacidosis (1.39 +/- 0.30 vs. 1.91 +/- 0.47 pg/10(6) cells, P less than 0.01). Insulin treatment restored insulin binding almost to the level of control children in both ketoacidotic and non-ketoacidotic patients. Insulin binding to monocytes was markedly decreased in untreated NIDDM children with hyperinsulinemia compared with healthy control children (0.73 +/- 0.27 vs. 1.91 +/- 0.47 pg/10(6) cells, P less than 0.01) or obese control children (0.73 +/- 0.27 vs. 1.33 +/- 0.35 pg/10(6) cells, P less than 0.01). These data indicate that changes in insulin secretion and metabolic conditions might be involved in the fluctuation of the number of insulin receptors in IDDM children as well as in NIDDM children.
Kida
K
K
Department of Pediatrics, Ehime University School of Medicine, Japan.
Goto
Y
Y
Watanabe
N
N
Kaino
Y
Y
Miyagawa
T
T
Inoue
T
T
Ikeuchi
M
M
Matsuda
H
H
Kuwajima
K
K
D000293:Adolescent; D002648:Child; D003922:Diabetes Mellitus, Type 1 / Q000097:blood*; D003924:Diabetes Mellitus, Type 2 / Q000097:blood*; D005260:Female; D006801:Humans; D007328:Insulin / Q000097:blood*; D008297:Male; D009000:Monocytes / Q000378:metabolism*; D011485:Protein Binding; D011972:Receptor, Insulin / Q000032:analysis
D007328:Insulin; D011972:Receptor, Insulin