Diabetes Drug Associated With Heart Risks

Use of diabetes drug rosiglitazone is associated with an increased risk for heart attack, a new study has found.

Rosiglitazone was approved in 1999 to treat hyperglycemia (high blood glucose levels) among patients with type 2 diabetes. Concerns about the cardiovascular safety of rosiglitazone first arose in 2007, when a meta-analysis demonstrated a significantly increased risk for myocardial infarction (heart attack) and a borderline significant increase for cardiovascular death.

Type 2 Diabetes - Risk Factors - Symptoms & Signs - Management - Prevention
Globalization and changing lifestyles has made diabetes very common in developing countries so much so that India is known as the Diabetes Capital of the World.

No large, definitive cardiovascular outcomes trials have been conducted with rosiglitazone. However, as a consequence of a 2004 court settlement in New York, GSK was required to post clinical trial results on a public web site.

In the combined studies, rosiglitazone therapy was associated with a significantly increased risk of myocardial infarction by an estimated 28 percent to 39 percent, although the risk of cardiovascular death was not increased.

"An alternative analysis that included trials with no cardiovascular events found a similar hazard. Subgroups classified by study duration and comparator drug also showed elevated odds ratio estimates," the authors said.

Diabetes Essentials: Types, Complications, Management & Treatment
Diabetes is a metabolic disease caused by insulin deficiency that leads to high blood sugar levels and several associated complications if left untreated.

"These findings are consistent with prior meta-analyses conducted by GSK, the FDA and most independent investigators demonstrating an increased risk of myocardial infarction in patients treated with rosiglitazone.

"The FDA has announced that it will conduct an advisory committee meeting in July 2010 to consider whether to remove rosiglitazone from the market," they added.

Gestational Diabetes About
The condition is not caused by a lack of insulin, but by the action of hormones produced during pregnancy that blocks the action of insulin.

The mechanisms by which rosiglitazone may cause cardiovascular harm are not clear, the authors note, but could involve increases in low-density lipoprotein (LDL, or "bad" cholesterol) levels or genetic effects associated with the production of an enzyme linked to plaque rupture.

The study appears in the July 26 print issue of Archives of Internal Medicine.

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A comprehensive article on diabetes - both Type 1 and Type 2 diabetes, including : causes, signs, symptoms, diagnosis, treatment, facts and a glossary on diabetes.

Source-ANI