Hepatic Oxygen Free Radical and Alcolhol Metabolizing Enzyme Activities in Rats Fed Diets Supplemented with Lycium chinense Ethanol Extract

흰쥐에 있어서 구기자 추출물 첨가식이가 간조직의 유해산소 및 알콜대사 효소활성에 미치는 영향

  • 윤종국 (계명대학교 공중보건과) ;
  • 김현희 (계명대학교 공중보건과) ;
  • 채순님 (동원대학교 피부미용과) ;
  • 오만진 (충남대학교 식품공학과) ;
  • 이규희 (충남대학교 식품공학과)
  • Published : 2001.08.01

Abstract

To investigate the oxygen free radical and alcohol metabolizing system in liver of rats fed diets with 30% ethanol extract of Lycium chinense (LCEE), Sprague-Dawley male rats weighing 225~235g have been fed a diet supplemented with 2% or 4% LCEE for a month. The rats fed LCEE supplemented diets gained less body weight compared with the control, and had no remarkable changes of liver function. In rats fed 2% LCEE supplemented diet, hepatic cytochrome P450 contents appeared to be increased, but catalase (204.88$\pm$20.06 $H_2O$$_2$nmoles/mg protein/min), and superoxide dismutase (13.18$\pm$0.74 Unit/mg protein) activities were significantly increased compared with control 120.28$\pm$26.99 $H_2O$$_2$nmoles/mg protein/min and 10.49$\pm$0.80 Units/mg protein). There was no difference in hepatic glutathione content, glutathione peroxidase, and glutathione-S-transferase ctivities between the rats fed LCEE suplemented diets and the control diet. On the other hand, hepatic alcohol dehydrogenase activity were not changed by LCEE feeding, but hepatic aldehyde dehydrogenase activities were significantly increased in rats fed both 2 and 4% LCEE diets(5.01$\pm$0.21 and 4.47$\pm$0.06 $\mu$moles NADPH/mg protein/min) compared with control (3.28$\pm$0.21 $\mu$moles NADPH/mg protein/min) and its Vmax value was 1.9 fold increased in rats fed 2% LCEE and 1.5 fold in those fed 4% LCEE compared with control. In conclusion, it is likely that rats receiving a diet supplemented with LCEE may have the oxygen free radicals and alcohol detoxication potential.

흰쥐에 있어서 구기자 추출물 첨가식이가 간조직의 유해산소대사기구와 알콜대사에 어떠한 효과가 있는지를 알아보기 위하여 구기자 알콜 추출물을 사료에 2%, 4%를 첨가시켜 1개월간 사육한 후 처치하여 다음과 같은 결과를 얻었다. 구기자 추출물 첨가식이로 성장하는 동안 체중증가율은 대조군보다 오히려 약간 감소되는 경향을 보였으며 간기능은 대조군과 별다른 차이가 없었다. 간조직의 xanthine oxidase 활성은 구기자 첨가식이군과 대조군간에는 별다를 차이를 볼 수 없었으며 cytochrome P450 함량은 2%및 4% 구기자 추출물 첨가식이군이 대조군보다 높게 나타나는 경향을 보였다. 그리고 간조직의 catalase 활성은 2% 및 4% 구기자 추출물 첨가식이군 모두 대조군보다 유의한 (p<0.05) 증가를 보였으나 두 실험군 간에는 별다른 차이를 볼 수 없었다. 또한 superoxide dismutase 활성은 2% 구기자 추출물 첨가식이군이 대조군보다 유의한 (p<0.05) 증가를 보였으며, 4% 구기자 추출물 첨가식이군은 대조군과는 별다른 차이가 없었으나 2% 구기자 추출물 첨가식이군에 비해서는 다소 감소하는 경향을 보였다. 그러나 glutathine 함량, glutathione-S-transferase 활성은 구기자 추출물 첨가식이군과 대조군 간에는 별다른 차이를 볼수 없었다. 한편 간조직의 alcohol dehydrogenase 활성은 2% 및 4% 구기자 추출물 첨가식이군 모두 대조군보다 유의한 (p<0.001) 증가를 보였다. 그리고 구기자 추출물 첨가식이군과 대조군의 Km치는 980mM로 동일한 값을 나타내었으나, Vmax치는 2% 및 4% 구기자 추출물 첨가식이군이 대조군보다 각각 71%(660 nmole)및 40%(526nmole)로 증가하였다. 이상 실험결과는 식이중 구기자 알콜 추출물 첨가는 유해산소 및 알콜의 해독효과를 나타냄을 시사해 주고 있다.

Keywords

References

  1. 도해향약대사전 정진섭;신민교
  2. Kor. J. Pharmacogn v.25 Pharmcological effect of Lycium chinense Kim. N.J;Youn. W.G;Hong. N.D
  3. Kor. J. Biomed. lab. Sci v.6 Study on the activity of GOT and GPT in the Hepatotoxic rat treated Lycium chinese mill Kim. B.W;Roh. K.S
  4. J. Korean. Soc. Food Sci Nutr v.29 Effect of the ethanol extract of Lycium chinese on the oxygen free radical and alcohol metabolizing enzyme activities in rats Yoon. C.G;Jeon. T.W;Oh. M.J;Lee. G.H;Jeon. J.H
  5. Am. J. Clin. Pathol v.28 A Colorimetric method for the determination of serum glutamic oxaloacetic and glutamic pyruvic transminase Reitman. S;Frankel. S
  6. J. Clin. Invest v.34 A note on the spectrophotometric assay of glutamic oxaloacetic transaminase in human blood serum Karmen.A
  7. J. Biol. Chem v.244 The regulation of rat liver xanthine oxidase ; Conversion in vitro of the enzyme activity from dehydrogenase(type D)to oxidase (type O) Stripe. F;Della Corte. E
  8. J. L.ab. Clin. Med v.70 Studies on the quantitative and qualitative characterization of erythrocytes glutathione peroxidase Paglia. E.D;Valentine. W.N
  9. J. Biol. Chem v.249 Glutathione S-transferase : The first enzymatic step in mercapturic and formation Habig. W.H;Pabist. M.J;Jakoby. W.B
  10. Gastroenterology v.66 Increased CCl₄ hepatotoxicity and its metabolism after chronic ethanol consumption Hasushi. Y;Tesker. R;Lieber. C.S
  11. Arch. Biochem. Biophys v.255 Nagative and positive assays of superoxide dismutase based on hematoxynlin autooxidation Martin. J.P. J.r;Dailey. M;Sugarman. E
  12. Catalase In Methods of enzymatic Analysis, ergmeyer, H.U(cd) v.2 Aebi. H
  13. Methods of enzymatic Analysis v.2 Bergmeyer. H.U
  14. J. Biol. Chem v.239 The carbon monoxide -binding pigment of liver microsomes:Evidence for its hemoprotein nature Omura. T;Sato. R
  15. Arch. Biochem. Biophys v.82 Tissue sulfhydry1 groups Ellman. G.L
  16. J. Biol. Chem v.193 Protein measurement with the folin phenol reagent Lowry. O.H;Rosenbrough. N.J;Farr. A.L;Randall. R.J
  17. Statistics for the Biological Sciences Schefler. W.C
  18. Cellular pathology I. In Robbins Pathologic Basis of Disease, 6th ed Cotran. R.S;Kurma. V;Collin. T
  19. SOD and active oxygen modulators Oyanagui. Y
  20. Kor. J. Gerontol v.8 Effect of growth on the enzyme activities of oxygen free radical generating and scavening system in CCl₄-treated rats Yoon. C.G;Lee. M.K;Lee. S.I
  21. Res. Commun. Chem. Pathol. Pharmacol v.38 Effect of carbon tetrachloride on the changes of xanthine oxidase activity in rats previously fed low or high protein diet Oei. H.H;Stroo. W.E;Burton. K.P;Schaffer. S.W
  22. J. Korean. Soc. Food. Nutr v.20 Effect of carbon tetrachloride on the changes of xanthine oxidase activity in rats previously fed low or high protein diet Yoon. C.G;Lee. S.I;Shin, J.K
  23. Korean. J.Toxicol v.11 Effect of toluene administration on the activity of serum xanthine oxidase in rats Jeon. T.W;Kang. H.Y;Yoon. C.G
  24. J. East. Asian of Dietary Life v.7 Effect of ethanol pretreatment on the serum and liver xanthine oxidase activity in bromobenzcne treated rats Yoon. C.G;Lim. Y.S
  25. Korean. J. Toxicol v.11 Effect of ethanol pretreatment on the bromobensene metabolism in rats Kim. J.W;Shin. J.K;Yoon. C.G
  26. J. Nutr v.104 Response of glutathione peroxidase to dietary sclenium in rats Chow. C.K;Tappel. A.L
  27. J. Gerontol v.35 Aspects of free radical reaction in biological systems:aging Leibovitz. B.E;Siegel. B.V