• 1.蘭州大學第二醫(yī)院普外科(甘肅蘭州 730030);;
  • 2.甘肅省慶陽市人民醫(yī)院普外科 (甘肅慶陽 745000);

目的  探討氧化性損傷在大鼠梗阻性黃疸肝功能損害發(fā)生中的作用以及褪黑素對其的保護作用。
方法  成年雄性SD大鼠64只,采用完全隨機化法隨機分為正常對照組(CN組,n=16)、假手術(shù)組(SO組,n=16)、膽總管結(jié)扎組(BDL組,n=16)和膽總管結(jié)扎+褪黑素治療組(BDL+MT組,n=16)。應(yīng)用膽總管結(jié)扎法建立梗阻性黃疸模型,褪黑素治療組大鼠手術(shù)前1d至手術(shù)后7d連續(xù)腹腔注射褪黑素0.5mg/(kg·d),每日10∶00給藥。分別于手術(shù)后第4d和第8d兩個時間點采集標本,檢測血漿中總膽紅素(TBIL)、丙氨酸轉(zhuǎn)氨酶(ALT)、門冬氨酸轉(zhuǎn)氨酶(AST)、堿性磷酸酶(AKP)及γ-谷氨酰轉(zhuǎn)肽酶(GGT)水平變化,比色法測定肝組織勻漿中丙二醛(MDA)、超氧化物歧化酶(SOD)、過氧化氫酶(CAT)、谷胱甘肽(GSH)、谷胱甘肽過氧化物酶(GSH-Px)含量或活力變化,采用TUNEL法檢測肝組織細胞凋亡,并計算肝細胞凋亡指數(shù)(AI)。
結(jié)果  與CN組和SO組比較,BDL組大鼠血漿TBIL、ALT、AST、AKP、GGT水平和肝組織MDA含量明顯升高(P<0.05,P<0.01),SOD、CAT、GSH-Px活力或GSH含量顯著降低(P<0.01),AI增加(P<0.01); 褪黑素治療可使血漿TBIL、ALT、AST、AKP、GGT和肝組織MDA含量顯著降低,SOD、CAT、GSH-Px活力或GSH含量明顯升高(P<0.01),AI減少(P<0.01)。BDL組肝組織MDA含量與血漿TBIL、ALT、AKP、AST、GGT水平均呈顯著正相關(guān)(P<0.01),GSH、SOD、CAT、GSH-Px與血漿TBIL、ALT、AKP、ALT、AST水平分別均呈顯著負相關(guān)(P<0.01);BDL組肝組織MDA含量的變化與AI呈正相關(guān)(P<0.01),而GSH含量及SOD、CAT、GSH-Px活力分別與AI呈負相關(guān)(P<0.01)。
結(jié)論  大鼠梗阻性黃疸時,肝組織自由基大量產(chǎn)生介導的氧化性損傷及其細胞凋亡,參與了肝功能損害的發(fā)生、發(fā)展。褪黑素對大鼠梗阻性黃疸肝功能損害有一定程度的保護作用,其機制可能與其拮抗肝組織過氧化和細胞凋亡有關(guān)。

引用本文: 張小明,馬平安,陳家先,寇治民,張有成. 褪黑素對梗阻性黃疸大鼠肝損傷保護作用的實驗研究. 中國普外基礎(chǔ)與臨床雜志, 2013, 20(8): 878-883. doi: 復(fù)制

1. Gonzalez-Correa JA, De La Cruz JP, Martin-Aurioles E, et al. Effects of S-adenosyl-L-methionine on hepatic and renal oxidativestress in an experimental model of acute biliary obstruction in rats[J]. Hepatology, 1997, 26(1):121-127.
2. 張永剛, 遲彥邦, 楊彤翰, 等. 膽道梗阻后肝臟自由基損傷及粉防己堿保護作用的實驗研究[J]. 中華實驗外科雜志, 1999, 16(5):406-407.
3. Granato A, Gores G, Vilei MT, et al. Bilirubin inhibits bile acid induced apoptosis in rat hepatocytes[J]. Gut, 2003, 52(12):1774-1778.
4. 李明正. 褪黑素的抗自由基氧化損傷和防護作用[J]. 國外醫(yī)學:衛(wèi)生學分冊, 2000, 27(1):26-29.
5. Shaker ME, Houssen ME, Abo-Hashem EM, et al. Comparison of vitamin E, L-carnitine and melatonin in ameliorating Carbon tetrachloride and diabetes induced hepatic oxidative stress[J]. J Physiol Biochem, 2009, 65(3):225-233.
6. Ohta Y, Kongo M, Kishikawa T. Melatonin exerts a therapeutic effect on cholestatic liver injury in rats with bile duct ligation[J]. J Pineal Res, 2003, 34(2):119-126.
7. Cruz A, Padillo FJ, Túnez I, et al. Melatonin protects against renal oxidative stress after obstructive jaundice in rats[J]. Eur J Pharmacol, 2001, 425(2):135-139.
8. Aktas C, Kanter M, Erboga M, et al. Melatonin attenuates oxid-ative stress, liver damage and hepatocyte apoptosis after bile-duct ligation in rats[J]. Toxicol Ind Health, 2012 Oct 24. [Epub ahead of print].
9. 張小明, 寇治民, 康二虎, 等. 褪黑素對大鼠梗阻性黃疸腎損害的保護作用[J]. 中國普外基礎(chǔ)與臨床雜志, 2005, 12(1):55-58.
10. Montilla P, Cruz A, Padillo FJ, et al. Melatonin versus vitamin E as protective treatment against oxidative stress after extra-hepatic bile duct ligation in rats[J]. J Pineal Res, 2001, 31(2):138-144.
11. Inan M, Sayek I, Tel BC, et al. Role of endotoxin and nitric oxidein the pathogenesis of renal failure in obstructive jaundice[J]. BrJ Surg, 1997, 84(7):943-947.
12. Hu S, Yin S, Jiang X, et al. Melatonin protects against alcoholic liver injury by attenuating oxidative stress, inflammatory response, and apoptosis[J]. Eur J Pharmacol, 2009, 616(1-3):287-292.
13. Brown KM, Brems JJ, Moazzam FN, et al. The nitric oxide donormolsidomine improves survival and reduces hepatocyte apoptosis in cholestasis and endotoxemia[J]. J Am Coll Surg, 2003, 197(2):261-269.
14. Andrabi SA, Sayeed I, Siemen D, et al. Direct inhibition of the mitochondrial permeability transition pore:a possible mechanism responsible for anti-apoptotic effects of melatonin[J]. FASEB J, 2004, 18(7):869-871.
15. Jones BA, Rao YP, Stravitz RT, et al. Bile salt-induced apoptosisof hepatocytes involves activation of protein kinase C[J]. Am J Physiol, 1997, 272(5 Pt 1):G1109-G1115.
16. Kayanoki Y, Fujii J, Islam KN, et al. The protective role of glutathione peroxidase in apoptosis induced by reactive oxygen species[J]. J Biochem, 1996, 119(4):817-822.
17. 洪汝濤, 陳世林, 阮海玲, 等. 褪黑素對大鼠急性酒精性肝損傷的作用[J]. 中國藥理學通報, 2011, 27(11):1596-1599.
18. 陳風, 湯琳, 汪健, 等. 胰膽管合流異常膽道損傷抗氧化治療的實驗研究[J]. 中國普外基礎(chǔ)與臨床雜志, 2012, 19(10):1069-1073.
19. Kang JW, Lee SM. Melatonin inhibits type 1 interferon signaling of toll-like receptor 4 via heme oxygenase-1 induction in hepatic ischemia/reperfusion[J]. J Pineal Res, 2012, 53(1):67-76.
20. Hsu JT, Kuo CJ, Chen TH, et al. Melatonin prevents hemorrhagic shock-induced liver injury in rats through an Akt-dependent HO-1 pathway[J]. J Pineal Res, 2012, 53(4):410-416.
21. Cheshchevik VT, Lapshina EA, Dremza IK, et al. Rat livermitochondrial damage under acute or chronic Carbon tetrachloride-induced intoxication:protection by melatonin and cranberry flavo-noids[J]. Toxicol Appl Pharmacol, 2012, 261(3):271-279.
22. Wang H, Xu DX, Lv JW, et al. Melatonin attenuates lipopolysaccharide (LPS)-induced apoptotic liver damage in D-galactosamine-sensitized mice[J]. Toxicology, 2007, 237(1-3):49-57.
23. El-Missiry MA, Fayed TA, El-Sawy MR, et al. Ameliorative effect of melatonin against gamma-irradiation-induced oxidativestress and tissue injury[J]. Ecotoxicol Environ Saf, 2007, 66(2):.
24. Jahovic N, Cevik H, Sehirli AO, et al. Melatonin prevents methotrexate-induced hepatorenal oxidative injury in rats[J]. J Pineal Res, 2003, 34(4):282-287.
25. Korkmaz GG, Uzun H, Cakatay U, et al. Melatonin ameliorates oxidative damage in hyperglycemia-induced liver injury[J]. Clin Invest Med, 2012, 35(6):E370-E377.
26. Reiter RJ. Melatonin:that ubiquitously acting pineal hormone[J]. Physiology, 1991, 6(5):223-227.
27. López PM, Fiñana IT, De Agueda MC, et al. Protective effect of melatonin against oxidative stress induced by ligature of extra-hepatic biliary duct in rats:comparison with the effect of S-adenosyl-L-methionine[J]. J Pineal Res, 2000, 28(3):143-149.
28. -286.
  1. 1. Gonzalez-Correa JA, De La Cruz JP, Martin-Aurioles E, et al. Effects of S-adenosyl-L-methionine on hepatic and renal oxidativestress in an experimental model of acute biliary obstruction in rats[J]. Hepatology, 1997, 26(1):121-127.
  2. 2. 張永剛, 遲彥邦, 楊彤翰, 等. 膽道梗阻后肝臟自由基損傷及粉防己堿保護作用的實驗研究[J]. 中華實驗外科雜志, 1999, 16(5):406-407.
  3. 3. Granato A, Gores G, Vilei MT, et al. Bilirubin inhibits bile acid induced apoptosis in rat hepatocytes[J]. Gut, 2003, 52(12):1774-1778.
  4. 4. 李明正. 褪黑素的抗自由基氧化損傷和防護作用[J]. 國外醫(yī)學:衛(wèi)生學分冊, 2000, 27(1):26-29.
  5. 5. Shaker ME, Houssen ME, Abo-Hashem EM, et al. Comparison of vitamin E, L-carnitine and melatonin in ameliorating Carbon tetrachloride and diabetes induced hepatic oxidative stress[J]. J Physiol Biochem, 2009, 65(3):225-233.
  6. 6. Ohta Y, Kongo M, Kishikawa T. Melatonin exerts a therapeutic effect on cholestatic liver injury in rats with bile duct ligation[J]. J Pineal Res, 2003, 34(2):119-126.
  7. 7. Cruz A, Padillo FJ, Túnez I, et al. Melatonin protects against renal oxidative stress after obstructive jaundice in rats[J]. Eur J Pharmacol, 2001, 425(2):135-139.
  8. 8. Aktas C, Kanter M, Erboga M, et al. Melatonin attenuates oxid-ative stress, liver damage and hepatocyte apoptosis after bile-duct ligation in rats[J]. Toxicol Ind Health, 2012 Oct 24. [Epub ahead of print].
  9. 9. 張小明, 寇治民, 康二虎, 等. 褪黑素對大鼠梗阻性黃疸腎損害的保護作用[J]. 中國普外基礎(chǔ)與臨床雜志, 2005, 12(1):55-58.
  10. 10. Montilla P, Cruz A, Padillo FJ, et al. Melatonin versus vitamin E as protective treatment against oxidative stress after extra-hepatic bile duct ligation in rats[J]. J Pineal Res, 2001, 31(2):138-144.
  11. 11. Inan M, Sayek I, Tel BC, et al. Role of endotoxin and nitric oxidein the pathogenesis of renal failure in obstructive jaundice[J]. BrJ Surg, 1997, 84(7):943-947.
  12. 12. Hu S, Yin S, Jiang X, et al. Melatonin protects against alcoholic liver injury by attenuating oxidative stress, inflammatory response, and apoptosis[J]. Eur J Pharmacol, 2009, 616(1-3):287-292.
  13. 13. Brown KM, Brems JJ, Moazzam FN, et al. The nitric oxide donormolsidomine improves survival and reduces hepatocyte apoptosis in cholestasis and endotoxemia[J]. J Am Coll Surg, 2003, 197(2):261-269.
  14. 14. Andrabi SA, Sayeed I, Siemen D, et al. Direct inhibition of the mitochondrial permeability transition pore:a possible mechanism responsible for anti-apoptotic effects of melatonin[J]. FASEB J, 2004, 18(7):869-871.
  15. 15. Jones BA, Rao YP, Stravitz RT, et al. Bile salt-induced apoptosisof hepatocytes involves activation of protein kinase C[J]. Am J Physiol, 1997, 272(5 Pt 1):G1109-G1115.
  16. 16. Kayanoki Y, Fujii J, Islam KN, et al. The protective role of glutathione peroxidase in apoptosis induced by reactive oxygen species[J]. J Biochem, 1996, 119(4):817-822.
  17. 17. 洪汝濤, 陳世林, 阮海玲, 等. 褪黑素對大鼠急性酒精性肝損傷的作用[J]. 中國藥理學通報, 2011, 27(11):1596-1599.
  18. 18. 陳風, 湯琳, 汪健, 等. 胰膽管合流異常膽道損傷抗氧化治療的實驗研究[J]. 中國普外基礎(chǔ)與臨床雜志, 2012, 19(10):1069-1073.
  19. 19. Kang JW, Lee SM. Melatonin inhibits type 1 interferon signaling of toll-like receptor 4 via heme oxygenase-1 induction in hepatic ischemia/reperfusion[J]. J Pineal Res, 2012, 53(1):67-76.
  20. 20. Hsu JT, Kuo CJ, Chen TH, et al. Melatonin prevents hemorrhagic shock-induced liver injury in rats through an Akt-dependent HO-1 pathway[J]. J Pineal Res, 2012, 53(4):410-416.
  21. 21. Cheshchevik VT, Lapshina EA, Dremza IK, et al. Rat livermitochondrial damage under acute or chronic Carbon tetrachloride-induced intoxication:protection by melatonin and cranberry flavo-noids[J]. Toxicol Appl Pharmacol, 2012, 261(3):271-279.
  22. 22. Wang H, Xu DX, Lv JW, et al. Melatonin attenuates lipopolysaccharide (LPS)-induced apoptotic liver damage in D-galactosamine-sensitized mice[J]. Toxicology, 2007, 237(1-3):49-57.
  23. 23. El-Missiry MA, Fayed TA, El-Sawy MR, et al. Ameliorative effect of melatonin against gamma-irradiation-induced oxidativestress and tissue injury[J]. Ecotoxicol Environ Saf, 2007, 66(2):.
  24. 24. Jahovic N, Cevik H, Sehirli AO, et al. Melatonin prevents methotrexate-induced hepatorenal oxidative injury in rats[J]. J Pineal Res, 2003, 34(4):282-287.
  25. 25. Korkmaz GG, Uzun H, Cakatay U, et al. Melatonin ameliorates oxidative damage in hyperglycemia-induced liver injury[J]. Clin Invest Med, 2012, 35(6):E370-E377.
  26. 26. Reiter RJ. Melatonin:that ubiquitously acting pineal hormone[J]. Physiology, 1991, 6(5):223-227.
  27. 27. López PM, Fiñana IT, De Agueda MC, et al. Protective effect of melatonin against oxidative stress induced by ligature of extra-hepatic biliary duct in rats:comparison with the effect of S-adenosyl-L-methionine[J]. J Pineal Res, 2000, 28(3):143-149.
  28. 28. -286.