Effect of Platycodon Grandiflorum Aqueous Extract on Lipid Levels in Rats

  • Kim Jeong-Seon (Department of Oriental Medical Food & Nutrition, Semyung University)
  • Published : 2006.08.01

Abstract

This study investigated the effects of Platycodon grandiflorum aqueous extract on lipid concentration of serum and liver in rats fed high cholesterol diet Male Sprague-Dawley rats were assigned to three groups (control, low dose of extract, high dose of extract) for four weeks. The serum total cholesterol concentration was significantly lower in the low and high doses of extract groups than in the control group. There was a significant decrease in the free cholesterol, cholesterol ester, LDL-cholesterol, and triglycerides concentrations in serum, and the total cholesterol and the triglycerides contentin liver in the low and high doses of extract groups compared to the control group. When the serum phospholipid concentration was compared among the groups, it was significantly lower in high dose of extract group than in control and low dose of extract group. It can be postulated that Platycodon grandiflorum aqueous extract may possess substantial hypolipidemic properties in rats.

Keywords

References

  1. Saeki T, Koike K, Mikado T. A comparative study on commercial, botanical gardens and wild samples of the roots of Platycodon grandiflorum by HPLC analysis. Planta Med 65:428-431, 1999 https://doi.org/10.1055/s-1999-14021
  2. Lee KJ, Choi CY, Chung YC, Kim YS, Ryun SY, Rohm SH, Jung HG. Protective effect of saponins derived from roots of Platycodon grandiflorum on tert-butyl hydroperoxide-induced oxidative hepatotoxicity. Toxicol Lett 147:271-282, 2004 https://doi.org/10.1016/j.toxlet.2003.12.002
  3. Han SB, Park SH, Lee KH, Lee CW, Lee SH, Kim HC, Kim YS, Lee HS, Kim MH. Polysaccharide isolated from the radix of Platycodon grandiflorum selectively activates B cells and rnacrophages but not T cells. Int Immunopharmacol 1:1969-1978, 2004 https://doi.org/10.1016/S1567-5769(01)00124-2
  4. Lee KJ, You HJ, Park SJ, Kim YS, Chung YC, Jeong TC, Jeong HG. Hepatoprotective effects of Platycodon grandiflorum on acetaminophen-induced liver damage in mice. Cancer Lett 174:73-81, 2001 https://doi.org/10.1016/S0304-3835(01)00678-4
  5. Kim KS, Ezaki O, Ikemoto S, Itakura H. Effects of Platycodon grandiflorum feeding on serum and liver lipid concentrations in rats with diet-induced hyperlipidemia. J Nutr Sci Vitaminol 41:485-491, 1995 https://doi.org/10.3177/jnsv.41.485
  6. Malinow MR, Connor WE, McLaughlin P, Stafford C, Lin DS, Livingston AL, Kohler GO, McNulty WP. Cholesterol and bile acid balance in Macaca Fascicularis: Effects of alfalfa saponins. J Clin Invest 67:156-162, 1981 https://doi.org/10.1172/JCI110008
  7. Kritchevsky D, Story JA. Binding of bile salts in vitro by nonnutritive fiber. J Nutr 104:458-462, 1974 https://doi.org/10.1093/jn/104.4.458
  8. Sidhu GS, Oakenfull DG. A mechanism for the hypocholesterolemic activity of saponins. Br J Nutr 55:643-649, 1986 https://doi.org/10.1079/BJN19860070
  9. Castelli WP, Garrison RJ, Wilson PW, Abbott RD, Kalousdian S, Kannel WB. Incidence of coronary heart disease and lipoprotein cholesterol level. The Framingham Study. JAMA 256:2835-2838, 1986 https://doi.org/10.1001/jama.256.20.2835
  10. Nicoll A, Miller NE, Lewis B. High-density lipoprotein metabolism. Adv Lipid Res 17:53-106, 1980
  11. Lipsky H, Gloger M, Frishman WH. Dietary fiber for reducing blood cholesterol. J Clin Pharmacol 30:699-703, 1990 https://doi.org/10.1002/j.1552-4604.1990.tb03629.x
  12. Bell LP, Hectorn KJ, Reynolds H, Hunninghake DB. Cholesterollowering effects of soluble-fiber cereals as part of a prudent diet for patients with mild to moderate hypercholesterolemia. Am J Clin Nutr 52:1020-1026, 1950
  13. Goodman DS. Cholesterol ester metabolism. Physiol Rev 45:747-839, 1965 https://doi.org/10.1152/physrev.1965.45.4.747
  14. Garg ML, Thomson AB, Clandinin MT. Effect of dietary cholesterol and/or $\omega$-3 fatty acids on lipid composition and ${\Delta}^5$ -desaturase activity rat liver microsomes. J Nutr 118:661-668, 1988 https://doi.org/10.1093/jn/118.6.661
  15. Smith EB. The relationship between plasma and tissue lipid in human atherosclerosis. Adv Lipid Res 12:1-49, 1974
  16. Goldstein JL, Brown MS. The LDL receptor defect in familial hypercholesterolemia. Implications for pathogenesis and therapy. Med Clin North Am 66:335-362, 1983
  17. Kesaniemi YA, Tarpila S, Miettinen TA. Low vs high dietary fiber and serum, biliary, and fecal lipids in middle-aged men. Am J Clin Nutr 51:1007-1012, 1990 https://doi.org/10.1093/ajcn/51.6.1007
  18. Ershoff BH, Wells AF. Effects of gum guar, locust bean and carrageenan on liver cholesterol of cholesterol-fed rats. Proc Soc Exp Biol Med 110:580-582, 1962
  19. Kestin M, Moss R, Clifton PM, Nestel PJ. Comparative effects of three cereal brans on plasma lipids, blood pressure, and glucose metabolism in midly hypercholesterolemic men. Am J Clin Nutr 52:661-666, 1990 https://doi.org/10.1093/ajcn/52.4.661
  20. Ney DM, Lasekan JB, Shinnick FL. Soluble oat fibers tends to normalize lipoprotein composition in cholesterol-fed rats. J Nutr 118:1455-1462, 1988 https://doi.org/10.1093/jn/118.12.1455
  21. Nishina PM, Schneeman BO, Freedland RA. Effects of dietary fibers on nonfasting plasma lipoprotein and apolipoprotein levels in rats. J Nutr 121:431-437, 1991 https://doi.org/10.1093/jn/121.4.431
  22. Cillingirouglu M, Ballantyne C. Endothelial lipase and cholesterol metabolism. Curr Atheroscler Rep 6: 126-130, 2004 https://doi.org/10.1007/s11883-004-0101-y
  23. Akiba Y, Matsumoto T. Effects of dietary fibers on lipid metabolism in liver and adipose tissue in chicks. J Nutr 112:1577-1585, 1982 https://doi.org/10.1093/jn/112.8.1577
  24. Topping DL, Illman RJ, Roach PD, Trimble RP, Kambouris A, Nestel PJ. Modulation of the hypolipidemic effect of fish oils by dietary fiber in rats: Studies with rice and wheat bran. J Nutr 12:325-330, 1990
  25. Thomas M, Leelamma S, Kurup PA. Effect of blackgram fiber on hepatic hydroxymethylglutaryl-CoA reductase activity, cholesterogenesis and cholesterol degradation in rats. J Nutr 113:1104-1108, 1983 https://doi.org/10.1093/jn/113.6.1104
  26. Thomas M, Leelamma S, Kurup PA. Effect of blackgram fiber on hepatic hydroxymethylglutaryl-CoA reductase activity, cholesterogenesis and cholesterol degradation in rats. J Nutr 113:1104-1108, 1983 https://doi.org/10.1093/jn/113.6.1104
  27. Shimizu J, Oka M, Kudoh K, Wada M, Takita T, Innami S, Tadokoro T, Maekawa A. Effects of a partially hydrolyzed curdlan on serum and hepatic cholesterol concentration and cereal fermentation in rats. Int J Vitam Nutr Res 72: 101-108, 2002 https://doi.org/10.1024/0300-9831.72.2.101
  28. Kiriyama S, Okazaki Y, Yoshida A. Hypocholesterolemic effect of polysaccharides and polysaccharide-rich foodstuffs in cholesterol-fed rats. J Nutr 97:382-388, 1969 https://doi.org/10.1093/jn/97.3.382
  29. Mueller MA, Cleary MP, Kritchevsky D. Influence of dietary fiber on lipid metabolism in meal-fed rats. J Nutr 113:2229-2238, 1983 https://doi.org/10.1093/jn/113.11.2229
  30. Bakhsh P, Chughtai MI. Effect of wheat flour, Bengal gram flour and com flour on lipid metabolism in rats. J Nutr Sci Vitaminol 30:297-301, 1984 https://doi.org/10.3177/jnsv.30.297
  31. Vahouny GV, Roy T, Gallo LL, Story JA, Kritchevsky D, Cassidy M. Dietary fibers. III. Effects of chronic intake on cholesterol absorption and metabolism in the rat. Am J Clin Nutr 33:2182-2191, 1980 https://doi.org/10.1093/ajcn/33.10.2182