Serum lipid and lipoprotein metabolism after glucose ingestion in NIDDM and IGT patients: apolipoprotein-containing particles
1996
Objective: Through analysis of apolipoprotein-containing particles-after glucose ingestion, we determined abnormal lipid metabolism in NIDDM patients and subjects with impaired glucose tolerance (IGT) without obesity or hyperlipidemia. Research and design and methods: Apolipoprotein (apo) AI- or B100-containing particles or remnant-like particles (RLPs) were isolated by immunoaffinity columns prepared with monoclonal antibodies. The cholesterol contents in these particles after glucose ingestion (0, 30, 60, and 120 min) were analyzed in 18 nonobese NIDDM patients, 18 nonobese IGT subjects, and 33 normal control subjects. Results: Changes in cholesterol content in apo B100 particles after oral glucose ingestion decreased significantly in both the NIDDM group and the IGT group; the changes were insignificant in the nondiabetic group. Changes in cholesterol content in the apo AI particles after oral glucose ingestion showed no differences between the three groups. Changes in cholesterol content in RLPs after oral glucose ingestion increased significantly in both the NIDDM group and IGT group; the changes were insignificant in the nondiabetic group. The changes in apo B100 after oral glucose ingestion decreased significantly in the three groups; however, apo AI after oral glucose ingestion showed no change in the three groups. Conclusion: The cholesterol content in apo B100 particles might decrease and the cholesterol content in RLPs might increase after oral glucose ingestion in not only NIDDM patients but also IGT subjects. The changes may be partially due to insulin resistance.
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