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Does microvascular disease predict macrovascular events in type 2 diabetes?
R S Rosenson1, P Fioretto, P M Dodson
1Mount Sinai Heart, Mount Sinai School of Medicine, One Gustave Levy Place, New York, NY 10029, USA. robert.rosenson@mssm.edu
Atherosclerosis
|July 19, 2011
Summary
Diabetic microvascular complications like retinopathy and nephropathy are linked to increased cardiovascular events in type 2 diabetes. Early detection of these microangiopathies is crucial for assessing vascular risk.
Area of Science:
- Endocrinology
- Cardiology
- Nephrology
Background:
- Population studies indicate a correlation between albuminuria, reduced glomerular filtration rate (GFR), retinopathy, and macrovascular events in type 2 diabetes.
- The presence of microvascular complications in type 2 diabetes requires further investigation regarding their association with macrovascular events.
Purpose of the Study:
- To review and analyze the association between diabetic microvascular complications and cardiovascular events in type 2 diabetes.
- To determine if the link between albuminuria, reduced GFR, retinopathy, and macrovascular events extends to other microvascular complications.
Main Methods:
- A systematic literature search was conducted on PubMed (1999-2010) using keywords related to microvascular and macrovascular complications in type 2 diabetes.
- Prospective studies with at least 200 type 2 diabetes subjects and documented cardiovascular endpoints were selected for review.
- Data from 25 studies (n=54,117) were analyzed to assess the association between microvascular complications and cardiovascular events.
Main Results:
- A significant association was found between microvascular complications (retinopathy, nephropathy) and cardiovascular events in type 2 diabetes.
- Diabetic retinopathy increased cardiovascular event risk by approximately 1.7-fold, while albuminuria or reduced GFR increased risk by about two-fold.
- These associations persisted even after adjusting for conventional cardiovascular risk factors, diabetes duration, and glycemic control, suggesting common underlying pathogenic mechanisms.
Conclusions:
- Microvascular and macrovascular diseases share common pathogenic mechanisms in type 2 diabetes, likely involving endothelial dysfunction, low-grade inflammation, and rheological abnormalities.
- Early detection of microangiopathy is essential for comprehensive vascular risk assessment in individuals with type 2 diabetes.
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