40 On the other hand, treatment of the diabetic rats with methanolic extract of D. hamiltonii caused reduction in the activity of these enzymes in plasma when compared to the diabetic group. Glucose synthesis in the rat liver and skeletal muscles was XAV-939 chemical structure impaired during diabetes; hence glycogen content of skeletal muscle and
liver markedly decreased in diabetes.41 Insulin is a stimulator of glycogen synthase system. On the other hand, insulin inhibits glycogenolysis and in lack of insulin, glycogenolysis is not under inhibition of insulin and, therefore, glycogen content of the liver decreases. Since alloxan causes selective destruction of beta cells of islets of pancreas resulting in marked decrease in insulin levels, it is rational that glycogen level in tissues decrease as they depend on insulin for influx of glucose.42 Treatment with methanolic extract of D. hamiltonii prevented the depletion of glycogen content in liver and skeletal muscle in alloxan-induced diabetic rabbits. This prevention of depletion of glycogen Adriamycin is possibly due to stimulation of insulin release from beta cells. 43 Further experiments are needed to identify the active components of the root extraction to determine
its mechanism of action. Conclusively, it is evident that methanolic extract of D. hamiltonii root contains antihyperglycemic agents capable of lowering blood glucose level and hypolipidemic effect. All authors have none to declare. Authors are thankful to the department of Biochemistry of Muthayammal College of Arts and Science, Rasipuram, Tamil Nadu and Dr.B.Duraiswamy, Department of pharmacognosy, ooty, Tamil Nadu for their encouragement and technical support in testing the extracts for activity. “
“A physiological condition when blood pressure stands consistently higher than normal magnitudes is referred to as hypertension.1 This physiological event implies extra performance and
also poses serious health risks. Hypertension has been identified and proven to be a major cause of strokes and heart attacks. In addition, science higher blood pressure also results into the devastation of coronary arteries, kidneys, brain and eyes.2 and 3 Target identification events have confirmed the cardinal role in regulation of a variety of physiological events, markedly within the cardiovascular system. Recent advances encompass the concerned studies related to physiological events and messenger systems in which the α-adrenergic receptors are involved.4 and 5 Literature survey reveals development of agonists and antagonists, highly selective for the various subtypes of α-adrenergic receptors and with possible therapeutic values and lesser side effects.6, 7, 8 and 9 The target site selection in alpha-adrenergic receptor was identified from the literature survey pertaining to current work.