目的研究肝臟低溫保存再灌注期間肝細(xì)胞糖原含量與肝細(xì)胞凋亡之間的關(guān)系及bax基因在其中的作用。方法制備糖原含量顯著不同的4組兔肝臟模型,根據(jù)給食方法的不同分為A組(禁食24 h,但自由飲水)、B組(標(biāo)準(zhǔn)實驗室飲食)、C組(標(biāo)準(zhǔn)實驗室飲食+每6 h靜脈滴注25%葡萄糖30 ml)及D組(標(biāo)準(zhǔn)實驗室飲食+每4 h靜脈滴注25%葡萄糖30 ml),檢測各組肝臟低溫保存再灌注期間肝細(xì)胞凋亡及bax基因蛋白的表達(dá)情況。結(jié)果各組肝臟于低溫保存9 h后再灌注60 min時,肝組織內(nèi)可見明顯的肝實質(zhì)細(xì)胞凋亡現(xiàn)象,A、B、C、D 4組的凋亡細(xì)胞數(shù)量依次減少, 4組間兩兩比較差異有統(tǒng)計學(xué)意義,各組肝細(xì)胞bax基因蛋白的表達(dá)程度與肝細(xì)胞糖原含量有密切的相關(guān)性。 結(jié)論肝臟低溫保存再灌注過程中,肝細(xì)胞內(nèi)糖原能明顯拮抗肝實質(zhì)細(xì)胞凋亡的發(fā)生,其內(nèi)在機(jī)理可能為肝細(xì)胞糖原通過抑制bax基因蛋白的表達(dá)從而達(dá)到拮抗肝實質(zhì)細(xì)胞凋亡的發(fā)生。
引用本文: 湯禮軍,田伏洲,王雨,高曉美. 低溫保存再灌注肝臟肝細(xì)胞凋亡與肝細(xì)胞糖原含量的關(guān)系及bax基因在其中的作用. 中國普外基礎(chǔ)與臨床雜志, 2003, 10(3): 226-229. doi: 復(fù)制
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- 2. Jamieson NV,Lindell S, Sundberg R, et al.An analysis of the components in UW solution using the isolated perfused rabbit liver [J]. Transplantation, 1988; 46(4)∶512.
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- 4. Cywes R, Greig PD, Sanabria JR, et al. Effect of intraportal glucose infusion on hepatic glycogen content and degradation, and outcome of liver transplantation [J]. Ann Surg, 1992; 216(3)∶235.
- 5. Gavrieli Y, Sherman Y, BenSasson SA. Identification of programmed cell death in situ via specific labeling of nuclear DNA fragmentation [J]. J Cell Biol, 1992; 119(3)∶493.
- 6. 王雨, 田伏洲, 湯禮軍, 等. 兔移植肝糖原在缺血再灌注期間的代謝特點(diǎn) [J]. 中華普通外科雜志, 2001; 16(7)∶442.
- 7. Schumer M, Colombel MC, Sawczuk IS, et al. Morphologic,biochemicals, and molecular evidence of apoptosis during the reperfusion phase after brief periods renal ischemia [J]. Am J Pathol, 1992; 140(4)∶831.
- 8. 湯禮軍, 田伏洲, 王雨, 等. 離體肝臟低溫保存再灌注期間肝細(xì)胞凋亡現(xiàn)象的觀察 [J]. 中國普外基礎(chǔ)與臨床雜志, 2000; 7(4)∶214.
- 9. Jurgensmeier JM, Xie Z, Deveraux Q, et al. Bax directly induces release of cytochrome C from isolated mitochondria [J]. Proc Natl Acad Sci USA, 1998; 95(9)∶4997.