Περίληψη:
NIDDM appears to be an inherited condition. Our aim was to identify early metabolic abnormalities in non-diabetic offspring with one NIDDM parent and with a strongly positive (n = 58, age 27.8 ± 7.0 years) or a negative family history (n = 38, age 27.4 ± 6.7 years) of diabetes. These were compared with 31 offspring of non-diabetic parents (age 26.9 ± 5.5 years). After an overnight fast, blood was taken for glucose, insulin, C-peptide, insulin receptors, and lipids. All the subjects underwent a 75 g oral glucose tolerance test. The positive family history group had significantly higher fasting levels of triglycerides (1.09 ± 0.24 vs control subjects: CS: 0.93 ± 0.16 mmol l-1, p < 0.001), insulin (102.8 ± 46.4 vs CS: 77.5 ± 32.4 pmol l-1, p < 0.01) and C-peptide (0.69 ± 0.22 vs CS: 0.61 ± 0.19 nmol l-1, p < 0.05) and lower numbers of insulin receptors per red cell (9.1 x 103 (4.5-18.1, 95% confidence intervals) vs CS: (11.2 x 103 (6.3-19.9)), P < 0.01, despite similar blood glucose levels. After a glucose challenge (120 min), the increases in both insulin and C-peptide concentrations were significantly greater in the positive family history group (289.2 ± 214.1 pmol l-1, 2.23 ± 1.48 nmol l-1), respectively, than in CS (192.4 ± 170.3 pmol l-1, p < 0.05) (1.54 ± 0.99 nmol l-1 p < 0.0.1), respectively. No significant differences were found in fasting and post-challenge glucose levels. The negative family history group had significantly lower numbers of insulin receptors 9.4 x 103 (4.1-15.2) compared with CS (p < 0.05). Insulin sensitivity was significantly reduced in the positive family history group (41.6%) compared with control subjects (51.9%), p < 0.01. The results strongly support the familial basis of the disease.
Συγγραφείς:
Migdalis, I.N.
Zachariadis, D.
Kalogeropoulou, K.
Nounopoulos, C.
Bouloukos, A.
Samartzis, M.
Λέξεις-κλειδιά:
c peptide; glucose; insulin; insulin receptor; lipid, adolescent; adult; article; controlled study; family history; female; human; hyperinsulinemia; major clinical study; male; non insulin dependent diabetes mellitus; pathogenesis, Adolescent; Adult; Analysis of Variance; Blood Glucose; Blood Pressure; C-Peptide; Cholesterol; Cholesterol, HDL; Confidence Intervals; Diabetes Mellitus, Type 2; Erythrocytes; Fasting; Female; Glucose Tolerance Test; Humans; Insulin; Lipids; Male; Middle Aged; Nuclear Family; Receptor, Insulin; Reference Values; Triglycerides
