Complementary Medicine International, Vol. 3, No. 3, pp. 28-36, May/June 1996.
Atef N. Hanna, PhD,* Vidya Sundaram, MD,** James M. Falko, MD,** Ralph E. Stephens, PhD,* and Hari M. Sharma, MD, FRCPC.*
*Department of Pathology and **Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43210
Oxidation of low-density lipoprotein (LDL) plays a central role in the pathogenesis of atherosclerosis. This study investigated the in vivo antioxidant activity of MAK-4 and MAK-5 in a clinical setting, and investigated the in vitro antioxidant properties of MAK-4. Both the aqueous and alcoholic extracts of MAK-4 inhibited endothelial cell (EC)- and soybean lipoxygenase (SLP)-induced LDL oxidation in a concentration-dependent manner. The agent concentrations (microgram/mL) which inhibited 50% (IC50) of EC- and SLP-induced LDL oxidation, respectively, were 150.0 +/- 10.0 and 488.3 +/- 41.9 for the aqueous extract, and 69.3 +/- 8.1 and 128.3 +/- 18.9 for the alcoholic extract. In vitro pretreatment of LDL with MAK-4 increased the resistance of LDL to Cu+2-catalyzed LDL oxidation. Both the aqueous and alcoholic extracts inhibited free radical generation in a concentration-dependent manner. The IC50 was 16.35 +/- 4.27 for the aqueous extract, and 3.64 +/- 1.24 for the alcoholic extract; addition of both extracts showed a synergistic interaction. In hyperlipidemic patients, MAK-4 and MAK-5 increased resistance of LDL to oxidation by Cu+2 and EC. These results suggest that MAK-4 and MAK-5 protect LDL from oxidation and may be useful in the prevention and treatment of atherosclerosis.
The sole purpose of these articles is to provide information about the tradition of ayurveda. This information is not intended for use in the diagnosis, treatment, cure or prevention of any disease. If you have any serious acute or chronic health concern, please consult a trained health professional who can fully assess your needs and address them effectively. If you are seeking the medical advice of a trained ayurvedic expert, call or e-mail us for the number of a physician in your area. Check with your doctor before taking herbs or using essential oils when pregnant or nursing.