Cardiovascular disease in type 1 diabetes

Area of Science:

• Endocrinology and Metabolism
• Cardiology
• Vascular Biology

Background:

• Cardiovascular disease (CVD) is a significant complication of diabetes, yet its mechanisms and management in type 1 diabetes (T1D) are less understood than in type 2 diabetes.
• Endothelial dysfunction is an early cellular marker of CVD, with its prevalence and severity increasing with age in T1D patients.

Purpose of the Study:

• To review current literature and guidelines on CVD in T1D.
• To highlight age-dependent cardiovascular risk factors and emerging risk assessment tools for T1D.

Main Methods:

• Literature review of recent studies and clinical guidelines.
• Analysis of cellular mechanisms of CVD in T1D, including endothelial dysfunction.
• Evaluation of existing and developing CVD risk assessment tools for T1D patients.

Main Results:

• Endothelial function is preserved in younger T1D patients but significantly impaired in older T1D individuals, indicating age-dependent risk.
• Several risk assessment tools, including QRISK3, are available or in development for T1D, with QRISK3 likely for routine use.
• CVD, particularly coronary artery disease, is a leading cause of mortality in T1D, often presenting silently and severely due to hyperglycemia-mediated oxidative stress and inflammation.

Conclusions:

• Endothelial dysfunction is a key age-dependent cardiovascular risk factor in T1D.
• Risk prediction tools are essential for identifying T1D individuals who may benefit from intensive risk factor modification.
• Routine screening for coronary artery disease is not recommended, but risk stratification aids in managing CVD in T1D.