Objective Researching the features of insulin resistance in patients with coronary heart disease (CHD) . Methods The study included 20 healthy subjects (control group), 53 CHD patients without (Group A) and 24 with es...Objective Researching the features of insulin resistance in patients with coronary heart disease (CHD) . Methods The study included 20 healthy subjects (control group), 53 CHD patients without (Group A) and 24 with essential hypertension (Group B) . Oral glucose tolerance test was administered to all subjects. Venous blood samples were taken during fasting and at 30, 60, 120 and 180 min after the glucose load (100g). All samples were assayed for glucose, insulin and C - peptide. Results The glucose, insulin, and C - peptide curves were at a hierarchy of Group B > Group A > the control group. Insulin - sensitivity - index was at an inverse hierarchy (-4. 31±0.55, -4. 05±0.47, - 3. 82±0. 42, respectively) . The ratio of the area under the C - peptide to the insulin was at a hierarchy of control group (3. 84±0. 81)> Group A (2. 84±0. 93)> Group B (2.26±0. 67), P < 0. 01) . As to insulin and C - peptide releasing types, most subjects of the control group had common type, while the predominant response type was pure - high in Group A, delayed - and delayed - high in Group B. Conclusions There are insulin resistance, insulin - C - peptide separation and changes of insulin and C - peptide releasing types in CHD patients. Insulin resistance is more severe when with hypertension. The hyperinsulinemia in CHD might be due to the over - secretion of insulin, also due to slow clearance in the patients accompanied by hypertension.展开更多
文摘Objective Researching the features of insulin resistance in patients with coronary heart disease (CHD) . Methods The study included 20 healthy subjects (control group), 53 CHD patients without (Group A) and 24 with essential hypertension (Group B) . Oral glucose tolerance test was administered to all subjects. Venous blood samples were taken during fasting and at 30, 60, 120 and 180 min after the glucose load (100g). All samples were assayed for glucose, insulin and C - peptide. Results The glucose, insulin, and C - peptide curves were at a hierarchy of Group B > Group A > the control group. Insulin - sensitivity - index was at an inverse hierarchy (-4. 31±0.55, -4. 05±0.47, - 3. 82±0. 42, respectively) . The ratio of the area under the C - peptide to the insulin was at a hierarchy of control group (3. 84±0. 81)> Group A (2. 84±0. 93)> Group B (2.26±0. 67), P < 0. 01) . As to insulin and C - peptide releasing types, most subjects of the control group had common type, while the predominant response type was pure - high in Group A, delayed - and delayed - high in Group B. Conclusions There are insulin resistance, insulin - C - peptide separation and changes of insulin and C - peptide releasing types in CHD patients. Insulin resistance is more severe when with hypertension. The hyperinsulinemia in CHD might be due to the over - secretion of insulin, also due to slow clearance in the patients accompanied by hypertension.
