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lüll Insulin resistance: a potential new target for therapy in patients with heart failure Wong AK; AlZadjali MA; Choy AM; Lang CCCardiovasc Ther 2008[Fal]; 26 (3): 203-13There is increasing evidence to suggest that chronic heart failure (CHF) is an insulin resistant (IR) state and that the degree of IR correlates with the severity and mortality of CHF. The pathophysiology of IR in CHF has yet to be fully defined. Additionally, it remains to be determined if IR is merely a marker reflecting the severity of CHF or whether it contributes to the disease in CHF. If IR is truly a culprit that worsens CHF, it will potentially be a new target for therapy as strategies that can reverse IR in CHF may potentially result in an improvement in symptoms and even mortality in these patients. However, there are concerns regarding the use of certain insulin sensitizers, most notably, the thiazolidinediones (TZDs) which have been associated with increased risk of hospitalizations for CHF. Despite previous concerns of lactic acidosis (LA), there is now evidence that metformin may not only be safe but could potentially be useful in the setting of CHF. There are now ongoing prospective studies, including the TAYSIDE study, to determine if reversing IR with metformin will have beneficial effects in patients with CHF.|*Insulin Resistance[MESH]|Chronic Disease[MESH]|Heart Failure/*drug therapy/pathology/*physiopathology[MESH]|Humans[MESH]|Hypoglycemic Agents/adverse effects/therapeutic use[MESH]|Metformin/adverse effects/therapeutic use[MESH]|Thiazolidinediones/adverse effects/therapeutic use[MESH] |