Summary
What is it about the metabolic syndrome that predisposes individuals to an increased risk of cardiovascular events? Which is the more important factor in the elevated cardiovascular risk of pre-diabetics; high circulating glucose levels or insulin resistance? How is this elevated risk linked to the inflammatory process?
In this presentation, Dr Steven Haffner discusses the results and implications of the San Antonio Heart Studies (SASH-1 & SASH-2), the Nurses Health Study, the Women’s Health Initiative, the STENO-2 trial, and the Insulin Resistance and Atherosclerosis Study (IRAS) and, in so doing, is able to dissect out the risk of cardiovascular events in different patient subgroups and discuss the relative contribution to this risk of both diabetes and the various components of the metabolic syndrome. The evidence for an increased cardiovascular risk among pre-diabetics, in particular, is reviewed. The differences among the varying conceptions of the metabolic syndrome are discussed, as well as how the evolving conception of the underlying cause of the metabolic syndrome has lead to a broadening of therapeutic options in modulating the cardiovascular risk of these individuals.
In addition, Dr. Haffner addresses the apparent discrepancies in some of the recent cardiovascular risk data from around the world and advocates for a multi-pronged approach to cardiovascular risk reduction for individuals with the metabolic syndrome.
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Learning objectives
After viewing this presentation, participants will be able to discuss:
- The difference between the NCEP and WHO definitions of the metabolic syndrome
- The relative contribution of the different components of the metabolic syndrome to the cardiovascular risk
- The risk associated with the pre-diabetic state
- The impact of the metabolic syndrome on the risk of diabetics and non-diabetics
- The impact of the metabolic syndrome on the risk of women as compared to men
Bibliographic references
Adler AI, Stratton IM, Neil HA, Yudkin JS, Matthews DR, Cull CA, Wright AD, Turner RC, Holman RR. Association of systolic blood pressure with macrovascular and microvascular complications of type 2 diabetes (UKPDS 36): prospective observational study. BMJ. 2000 Aug 12;321(7258):412-9.
Charles M. Alexander, Pamela B. Landsman, Steven M. Teutsch, and Steven M. Haffner.NCEP-Defined Metabolic Syndrome, Diabetes, and Prevalence of Coronary Heart Disease Among NHANES III Participants Age 50 Years and Older Diabetes.2003; 52:1210-1214.
Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults.Executive Summary of the Third Report of the National Cholesterol Education Program (NCEP) Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults (Adult Treatment Panel III)JAMA. 2001;285:2486-2497.
Andreas Festa, MD; Ralph D'Agostino, Jr, PhD; George Howard, DrPH; Leena Mykkaenen, MD, PhD; Russell P. Tracy, PhD; Steven M. Haffner, MD.Chronic Subclinical Inflammation as Part of the Insulin Resistance Syndrome-The Insulin Resistance Atherosclerosis Study (IRAS)Circulation. 2000;102:42.
Peter Gaede, M.D., Pernille Vedel, M.D., Ph.D., Nicolai Larsen, M.D., Ph.D., Gunnar V.H. Jensen, M.D., Ph.D., Hans-Henrik Parving, M.D., D.M.Sc., and Oluf Pedersen, M.D., D.M.Sc.Multifactorial Intervention and Cardiovascular Disease in Patients with Type 2 DiabetesNEJM.2003;348:383-393.
Haffner SM, Stern MP, Hazuda HP, Mitchell BD, Patterson JK. Cardiovascular risk factors in confirmed prediabetic individuals. Does the clock for coronary heart disease start ticking before the onset of clinical diabetes? JAMA. 1990 Jun 6;263(21):2893-8.
Haffner SM, Lehto S, Ronnemaa T, Pyorala K, Laakso M. Mortality from coronary heart disease in subjects with type 2 diabetes and in nondiabetic subjects with and without prior myocardial infarction. N Engl J Med. 1998 Jul 23;339(4):229-34.
Steven M. Haffner, MD; Andrew S. Greenberg, MD; Wayde M. Weston, PhD; Hongzi Chen, PhD; Ken Williams, MS; Martin I. Freed, MD.Effect of Rosiglitazone Treatment on Nontraditional Markers of Cardiovascular Disease in Patients With Type 2 Diabetes Mellitus Circulation. 2002;106:679.
Anthony J.G. Hanley, Lynne E. Wagenknecht, Ralph B. D'Agostino, Jr., Bernard Zinman, and Steven M. Haffner.Identification of Subjects with Insulin Resistance and Beta-Cell Dysfunction Using Alternative Definitions of the Metabolic Syndrome Diabetes.2003;52:2740-2747.
Frank B. Hu, MD, Meir J. Stampfer, MD, Steven M. Haffner, MD, Caren G. Solomon, MD, Walter C. Willett, MD and JoAnn E. Manson, MD. Elevated Risk of Cardiovascular Disease Prior to Clinical Diagnosis of Type 2 Diabetes Diabetes Care.2002;25:1129-1134.
Kelly J. Hunt, PhD; Roy G. Resendez, MA; Ken Williams, MS; Steve M. Haffner, MD; Michael P. Stern, MD. National Cholesterol Education Program Versus World Health Organization Metabolic Syndrome in Relation to All-Cause and Cardiovascular Mortality in the San Antonio Heart StudyCirculation. 2004;110:1251-1257.
Hanna-Maaria Lakka, MD, PhD; David E. Laaksonen, MD, MPH; Timo A. Lakka, MD, PhD; Leo K. Niskanen, MD, PhD; Esko Kumpusalo, MD, PhD; Jaakko Tuomilehto, MD, PhD; Jukka T. Salonen, MD, PhD.The Metabolic Syndrome and Total and Cardiovascular Disease Mortality in Middle-aged Men JAMA. 2002;288:2709-2716.
Carlos Lorenzo, MD, Mayor Okoloise, MS, Ken Williams, MS, Michael P. Stern, MD and Steven M. Haffner, MD.The Metabolic Syndrome as Predictor of Type 2 Diabetes Diabetes Care.2003;26:3153-3159.
Norhammar A, Tenerz A, Nilsson G, Hamsten A, Efendic S, Ryden L, Malmberg K. Glucose metabolism in patients with acute myocardial infarction and no previous diagnosis of diabetes mellitus: a prospective study. Lancet. 2002 Jun 22;359(9324):2140-4.
Paul M. Ridker, M.D., Nader Rifai, Ph.D., Lynda Rose, M.S., Julie E. Buring, Sc.D., and Nancy R. Cook, Sc.D.Comparison of C-Reactive Protein and Low-Density Lipoprotein Cholesterol Levels in the Prediction of First Cardiovascular EventsNEJM.2002;347:1557-1565.
Paul M Ridker, MD; Julie E. Buring, ScD; Nancy R. Cook, ScD; Nader Rifai, PhD C-Reactive Protein, the Metabolic Syndrome, and Risk of Incident Cardiovascular Events Circulation. 2003;107:391
Michael P. Stern, MD; Ken Williams, MS; and Steven M. Haffner, MD, MPH.Identification of Persons at High Risk for Type 2 Diabetes Mellitus: Do We Need the Oral Glucose Tolerance Test?Ann Int Med.2002;136(8):575-581.
Stratton IM, Adler AI, Neil HA, Matthews DR, Manley SE, Cull CA, Hadden D, Turner RC, Holman RR. Association of glycaemia with macrovascular and microvascular complications of type 2 diabetes (UKPDS 35): prospective observational study. BMJ. 2000 Aug 12;321(7258):405-12.
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