en Physiology Physiology Original Research: Basic Science in Medicine Original Research: Basic Science in Medicine The results obtained in the present investigations point to a definite correlation between the onset of myocardial injury, electrocardiographic changes and biochemical changes. Changes in the electrocardiogram and elevated serum levels were paralleled by an increased excretion of magnesium in urine as early as one hour. Serum calcium and serum potassium levels did not show any significant result, but in coming days these ions including serum magnesium might help clinicians diagnose myocardial infarction. In this study, increased urinary magnesium excretion was found to coincide with elevated serum transaminases, and it is suggested that in addition to the other establised diagnostic criteria, estimation of serum as well as urinary magnesium may be used as an additional index of myocardial infarction. 151 155 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-298-783&slc_lang=en&sid=1 KASHAV ANAND 20031947532846006554 20031947532846006554 Yes From the Department of Physiology, Department of Anatomy, and Department of Pathology, School of Medicine, Kerman University of Medical Sciences, Kerman, Islamic Republic of Iran. ABRAR ALI KHAN 20031947532846006555 20031947532846006555 No RAJENDRA KUMAR GUPTA 20031947532846006556 20031947532846006556 No