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Heart disease in diabetes mellitus: a challenge for early diagnosis and intervention
1Diabetes Research Institute at the Heinrich Heine University, Düsseldorf, Germany. tschoepe@uni-duesseldorf.de
Insights
Diabetes significantly increases thrombotic complications and cardiovascular disease risk. Effective management requires a comprehensive approach beyond glucose control, addressing coagulation and other metabolic factors for early secondary prevention.
Area of Science:
- Cardiovascular Medicine
- Diabetology
- Thrombosis Research
Background:
- Diabetes mellitus is a major risk factor for thrombotic complications, primarily myocardial infarction, often linked to metabolic syndrome.
- Associated conditions like dyslipoproteinemia, hypertension, and obesity exacerbate cardiovascular disease (CVD) risk in diabetic patients.
- The
- metabolic syndrome
- in Type-II diabetes patients, combined with genetic predisposition, accelerates coronary artery disease (CAD) and diabetic cardiopathy.
Purpose of the Study:
- To elucidate the pathophysiological mechanisms underlying thrombotic complications in diabetes.
- To investigate the pro-thrombotic state in diabetic patients, including coagulation and fibrinolysis alterations.
- To evaluate the impact of these mechanisms on cardiac function and intervention outcomes in diabetes.
Main Methods:
- Analysis of the pro-thrombotic state in diabetic patients, focusing on coagulation, fibrinolysis, endothelial function, and platelet activity.
- Assessment of factors contributing to atherothrombosis, such as fibrinogen, PAI-1, and platelet hyperreactivity.
- Evaluation of cardiac remodelling and adhesion mechanisms in diabetic hearts.
Main Results:
- Diabetic patients exhibit a pro-thrombotic state characterized by increased coagulation, diminished fibrinolysis, reduced endothelial thromboresistance, and platelet hyperreactivity.
- Specific factors like elevated fibrinogen, PAI-1, and platelets contribute to increased coronary risk and atherothrombosis.
- Altered cardiac remodelling and adhesion mechanisms contribute to impaired functional performance and reduced success of interventions (PTCA, CABG) in diabetic patients.
Conclusions:
- Glucose control alone is insufficient to counteract the complex thrombotic mechanisms in diabetes.
- A multidimensional interventional strategy, including antihypertensive, antidyslipoproteinemic, and antithrombotic therapies, is crucial for early secondary prevention in diabetes.
- Personalized treatment plans based on early diagnostic measures are essential for managing cardiovascular complications in diabetic patients.
Abstract:
Most people with diabetes die from thrombotic complications superimposed to degenerative arterial vascular lesions, mostly myocardial infarction. Diabetes is a risk factor per se for such complications, but often clusters with dyslipoproteinemia, hypertension and obesity. In NIDDM (Type-II) patients this is referred to as "metabolic syndrome" and often operates on a genetically programmed susceptibility which accelerates the pathogenesis of coronary artery disease in front of a much wider diabetes specific cardiopathy. From a pathophysiological point of view none of these associated risk factors explains the pathogenetic series of events leading to the precipitation of an occlusive thrombus at sites of complicated coronary plaques. In patients with diabetes the coagulation system is switched towards a prethrombotic state, involving increased plasmatic coagulation, diminished fibrinolysis, decreased endothelial thromboresistance and predominantly platelet hyperreactivity ("diabetic thrombocytopathy"). Some of these factors are associated with an increased coronary risk (e.g. fibrinogen, PAI-1, platelets), but are also directly linked to the pathogenesis of "atherothrombosis". Altered cardiac remodelling together with adhesion and coagulation mechanisms appears suitable to explain decreased functional performance of infarcted organs, decreased success of acute (reduced fibrinolytic response, reperfusion injury) and longterm intervention strategies (PTCA, CABG) in diabetes. Glucose adjustment alone will not adequately neutralize these complex mechanisms. Particularly in diabetes a multidimensional interventional repertoire is required including antihypertensive, antidyslipoproteinemic and antithrombotic drugs, customized according to the individual patients needs as assessed by early diagnostic measures ("early secondary prevention").