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Abstract Title:

Effect of L- arginine on electrocardiographic changes induced by hypercholesterolemia and isoproterenol in rabbits.

Abstract Source:

Indian Pacing Electrophysiol J. 2009;9(1):45-52. Epub 2009 Jan 7. PMID: 19165358

Abstract Author(s):

Pradeep Kumar, Manish Goyal, J L Agarwal

Article Affiliation:

Department of Physiology, CSM Medical University, Lucknow 226003. jenypradeep2002@yahoo.com

Abstract:

Hypercholesterolemia, a well-known cardiovascular risk factor, is associated with prolonged action potential duration, longer QTc intervals (rate controlled QT interval), suggested that Hypercholesterolemia may have a direct effect on ventricular repolarization. Hypercholesterolemia was induced in rabbits and L-arginine was given orally to animals for sixteen weeks. The isoproterenol was injected in all the animals to produce electrocardiographic changes. ECG was recorded in lead II at start of study, after hypercholesterolemic diet and/ or L-arginine supplementation. It is observed that L-arginine significantly reduced the hypercholesterolemia induced QTc prolongation. Isoproterenol induced increase in QTc intervals were decreased only in normolipidemic animals. No significant changes were observed in QRS complex and heart rate. Our study suggests that L-arginine definitely have effect on repolarization processes of myocardium.

Study Type : Animal Study

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Sayer Ji
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