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Pioglitazone and cardiovascular risk reduction: time for a second look?
Ana L Perdigoto1, Lawrence H Young2, Silvio E Inzucchi1
1Department of Internal Medicine, Section of Endocrinology.
Pioglitazone, an insulin sensitizing drug, may reduce cardiovascular events in patients with insulin resistance. The Insulin Resistance Intervention after Stroke trial showed benefits in stroke patients, suggesting its use for secondary CV risk prevention.
Area of Science:
- Endocrinology
- Cardiology
- Pharmacology
Background:
- Insulin resistance is a key factor in type 2 diabetes, increasing cardiovascular disease (CV) risk.
- Antihyperglycemic agents lacking insulin-sensitizing properties have shown limited CV benefits.
- Insulin sensitizing drugs are hypothesized to reduce CV complications, but data are inconsistent.
Purpose of the Study:
- To review thiazolidinedione trials reporting cardiovascular outcomes.
- To focus on the Insulin Resistance Intervention after Stroke (IRIS) trial findings.
- To discuss pioglitazone's role in secondary CV risk prevention for insulin-resistant patients.
Main Methods:
- Review of clinical trials on thiazolidinediones and cardiovascular events.
- Analysis of the Insulin Resistance Intervention after Stroke (IRIS) trial data.
- Discussion of pioglitazone's efficacy in stroke patients with insulin resistance.
Main Results:
- The IRIS trial demonstrated a beneficial effect of pioglitazone on cardiovascular outcomes in stroke patients with insulin resistance.
- Thiazolidinediones' impact on macrovascular events warrants further investigation.
- Pioglitazone showed potential for secondary prevention of CV risk.
Conclusions:
- Pioglitazone may offer a selective advantage in reducing CV risk in insulin-resistant individuals.
- The IRIS trial results have significant implications for clinical practice in managing CV risk.
- Further research into insulin sensitizing agents for CV protection is warranted.
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