Small-dense LDL and LDL glycation in metabolic syndrome and in statin-treated and non-statin-treated type 2 diabetes. 2010

Nahla N Younis, and Handrean Soran, and Reena Sharma, and Valentine Charlton-Menys, and Adam Greenstein, and Mohamed M Elseweidy, and Paul N Durrington
Cardiovascular Research Group, School of Clinical & Laboratory Sciences, University of Manchester, UK.

Small-dense LDL (SD-LDL) has been particularly implicated in atherosclerosis. It has previously been reported that in non-diabetic people SD-LDL is preferentially glycated. The distribution of glycated apolipoprotein B (glyc-apoB) in lipoproteins in metabolic syndrome (MS) and in type 2 diabetes has not previously been studied. Plasma apoB and glyc-apoB were determined in different apoB-containing lipoproteins including buoyant and SD-LDL in MS (n=18) and type 2 diabetes (DM) [n=48; 12 statin-untreated (DM-S) and 36 statin-treated (DM+S)]. Plasma glyc-apoB was 5.6 ± 0.9, 3.5 ± 0.5 and 4.0 ± 0.2 mg/dl in DM-S, DM+S and MS, respectively. The glycated proportion of SD-LDL-apoB was greater than buoyant LDL in all groups. SD-LDL contributed most to plasma glyc-apoB in DM-S, because SD-LDL-apoB was higher in DM-S than in MS and DM+S (p < 0.001). Plasma glyc-apoB correlated with SD-LDL-apoB (r=0.74, p < 0.0001 in diabetes and r=0.53, p < 0.001 in MS), but not with HbA(1c). SD-LDL is preferentially glycated in type 2 diabetes and MS. Its concentration is a stronger determinant of plasma glycapoB than glycaemia. Statin-induced changes in its level may be important in decreasing apoB glycation in diabetes. These findings may explain the small effect of improving glycaemia relative to statin treatment in reducing atherosclerosis risk in type 2 diabetes and the increased risk in MS even before the onset of type 2 diabetes.

UI MeSH Term Description Entries
D008077 Lipoproteins, LDL A class of lipoproteins of small size (18-25 nm) and light (1.019-1.063 g/ml) particles with a core composed mainly of CHOLESTEROL ESTERS and smaller amounts of TRIGLYCERIDES. The surface monolayer consists mostly of PHOSPHOLIPIDS, a single copy of APOLIPOPROTEIN B-100, and free cholesterol molecules. The main LDL function is to transport cholesterol and cholesterol esters to extrahepatic tissues. Low-Density Lipoprotein,Low-Density Lipoproteins,beta-Lipoprotein,beta-Lipoproteins,LDL(1),LDL(2),LDL-1,LDL-2,LDL1,LDL2,Low-Density Lipoprotein 1,Low-Density Lipoprotein 2,LDL Lipoproteins,Lipoprotein, Low-Density,Lipoproteins, Low-Density,Low Density Lipoprotein,Low Density Lipoprotein 1,Low Density Lipoprotein 2,Low Density Lipoproteins,beta Lipoprotein,beta Lipoproteins
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D003924 Diabetes Mellitus, Type 2 A subclass of DIABETES MELLITUS that is not INSULIN-responsive or dependent (NIDDM). It is characterized initially by INSULIN RESISTANCE and HYPERINSULINEMIA; and eventually by GLUCOSE INTOLERANCE; HYPERGLYCEMIA; and overt diabetes. Type II diabetes mellitus is no longer considered a disease exclusively found in adults. Patients seldom develop KETOSIS but often exhibit OBESITY. Diabetes Mellitus, Adult-Onset,Diabetes Mellitus, Ketosis-Resistant,Diabetes Mellitus, Maturity-Onset,Diabetes Mellitus, Non-Insulin-Dependent,Diabetes Mellitus, Slow-Onset,Diabetes Mellitus, Stable,MODY,Maturity-Onset Diabetes Mellitus,NIDDM,Diabetes Mellitus, Non Insulin Dependent,Diabetes Mellitus, Noninsulin Dependent,Diabetes Mellitus, Noninsulin-Dependent,Diabetes Mellitus, Type II,Maturity-Onset Diabetes,Noninsulin-Dependent Diabetes Mellitus,Type 2 Diabetes,Type 2 Diabetes Mellitus,Adult-Onset Diabetes Mellitus,Diabetes Mellitus, Adult Onset,Diabetes Mellitus, Ketosis Resistant,Diabetes Mellitus, Maturity Onset,Diabetes Mellitus, Slow Onset,Diabetes, Maturity-Onset,Diabetes, Type 2,Ketosis-Resistant Diabetes Mellitus,Maturity Onset Diabetes,Maturity Onset Diabetes Mellitus,Non-Insulin-Dependent Diabetes Mellitus,Noninsulin Dependent Diabetes Mellitus,Slow-Onset Diabetes Mellitus,Stable Diabetes Mellitus
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D017127 Glycation End Products, Advanced A heterogeneous group of compounds derived from rearrangements, oxidation, and cross-linking reactions that follow from non-enzymatic glycation of amino groups in PROTEINS; LIPIDS; or NUCLEIC ACIDS. Their accumulation in vivo accelerates under hyperglycemic, oxidative, or inflammatory conditions. Heat also accelerates the formation of advanced glycation end products (AGEs) such seen with the browning of food during cooking. Advanced Glycation End Product,Advanced Glycation Endproduct,Advanced Maillard Reaction End Product,Glycated Lipids,Glycotoxins,Maillard Product,Maillard Reaction End Product,Maillard Reaction Product,Advanced Glycation End Products,Advanced Glycation Endproducts,Advanced Maillard Reaction End Products,Glycation Endproducts, Advanced,Maillard Products,Maillard Reaction End Products,Maillard Reaction Products,Glycation Endproduct, Advanced,Lipids, Glycated,Product, Maillard Reaction,Products, Maillard,Products, Maillard Reaction,Reaction Products, Maillard
D050197 Atherosclerosis A thickening and loss of elasticity of the walls of ARTERIES that occurs with formation of ATHEROSCLEROTIC PLAQUES within the ARTERIAL INTIMA. Atherogenesis,Atherogeneses,Atheroscleroses
D019161 Hydroxymethylglutaryl-CoA Reductase Inhibitors Compounds that inhibit HYDROXYMETHYLGLUTARYL COA REDUCTASES. They have been shown to directly lower CHOLESTEROL synthesis. HMG-CoA Reductase Inhibitor,HMG-CoA Reductase Inhibitors,Hydroxymethylglutaryl-CoA Reductase Inhibitor,Statin,Statins, HMG-CoA,Inhibitors, HMG-CoA Reductase,Inhibitors, Hydroxymethylglutaryl-CoA,Inhibitors, Hydroxymethylglutaryl-Coenzyme A,Statins,HMG CoA Reductase Inhibitor,HMG CoA Reductase Inhibitors,HMG-CoA Statins,Hydroxymethylglutaryl CoA Reductase Inhibitor,Hydroxymethylglutaryl CoA Reductase Inhibitors,Hydroxymethylglutaryl-CoA Inhibitors,Hydroxymethylglutaryl-Coenzyme A Inhibitors,Inhibitors, HMG CoA Reductase,Inhibitors, Hydroxymethylglutaryl CoA,Inhibitors, Hydroxymethylglutaryl Coenzyme A,Inhibitors, Hydroxymethylglutaryl-CoA Reductase,Reductase Inhibitor, Hydroxymethylglutaryl-CoA,Reductase Inhibitors, HMG-CoA,Reductase Inhibitors, Hydroxymethylglutaryl-CoA,Statins, HMG CoA
D024821 Metabolic Syndrome A cluster of symptoms that are risk factors for CARDIOVASCULAR DISEASES and TYPE 2 DIABETES MELLITUS. The major components of metabolic syndrome include ABDOMINAL OBESITY; atherogenic DYSLIPIDEMIA; HYPERTENSION; HYPERGLYCEMIA; INSULIN RESISTANCE; a proinflammatory state; and a prothrombotic (THROMBOSIS) state. Cardiometabolic Syndrome,Insulin Resistance Syndrome X,Metabolic Syndrome X,Reaven Syndrome X,Dysmetabolic Syndrome X,Metabolic Cardiovascular Syndrome,Metabolic X Syndrome,Syndrome X, Insulin Resistance,Syndrome X, Metabolic,Cardiometabolic Syndromes,Cardiovascular Syndrome, Metabolic,Cardiovascular Syndromes, Metabolic,Metabolic Syndromes,Syndrome X, Dysmetabolic,Syndrome X, Reaven,Syndrome, Cardiometabolic,Syndrome, Metabolic,Syndrome, Metabolic Cardiovascular,Syndrome, Metabolic X,Syndromes, Cardiometabolic,Syndromes, Metabolic,X Syndrome, Metabolic

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