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HbA1c negatively correlates with LCAT activity in type 2 diabetes
Manouchehr Nakhjavani1, Alireza Esteghamati, Fatemeh Esfahanian
1Endocrinology and Metabolism Research Center, Vali-Asr Hospital, Imam Khomeini Medical Complex, School of Medicine, Medical Sciences/University of Tehran, Tehran, Iran. nakhjavanim@sina.tums.ac.ir
Diabetes Research and Clinical Practice
|May 20, 2008
Summary
Glycemic control, measured by HbA1c, significantly impacts lecithin:cholesterol acyltransferase (LCAT) activity in type 2 diabetes mellitus (DM2). Poor glycemic control (high HbA1c) is linked to reduced LCAT activity, affecting high-density lipoprotein (HDL) metabolism.
Area of Science:
- Cardiovascular Research
- Metabolic Disorders
- Lipid Metabolism
Background:
- Abnormal high-density lipoprotein (HDL) metabolism is a significant cardiovascular risk factor in type 2 diabetes mellitus (DM2).
- Lecithin:cholesterol acyltransferase (LCAT) plays a crucial role in HDL maturation and cholesterol efflux by transferring acyl groups to cholesterol, thereby increasing HDL size.
- Understanding factors influencing LCAT activity is vital for managing cardiovascular risk in DM2 patients.
Purpose of the Study:
- To identify independent correlates of lecithin:cholesterol acyltransferase (LCAT) activity in patients with type 2 diabetes mellitus (DM2).
- To investigate the relationship between glycemic control and LCAT activity in this patient population.
Main Methods:
- A cohort of 45 adult type 2 diabetes mellitus (DM2) patients meeting specific inclusion/exclusion criteria were studied.
- Comprehensive biochemical and clinical variables were assessed.
- Univariate and multivariate statistical analyses were employed to determine independent predictors of LCAT activity.
Main Results:
- HbA1c and oxidized LDL showed a significant negative correlation with LCAT activity (p<0.001).
- HbA1c and oxidized LDL were strongly correlated with each other (rho=0.809, p<0.001).
- Multivariate analysis identified HbA1c as a strong independent predictor of LCAT activity (adjusted OR=-0.928, p<0.001).
Conclusions:
- Glycemia-induced glycation of HDL negatively impacts LCAT activity.
- HbA1c serves as an accurate and easily assessable marker for glycation, reflecting glycated HDL levels.
- HbA1c is a reliable indicator of LCAT activity in type 2 diabetes mellitus (DM2) patients.
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