目的 探討肝細(xì)胞膜鈉泵(Na+K+ATPase)活性變化在膽紅素鈣結(jié)石成石過程中的作用。方法采用膽紅素鈣結(jié)石兔模型進(jìn)行研究,對(duì)照組28只,膽道不全梗阻組(BO組)36只,膽道不全梗阻加感染組(BOI組)39只,各組再按術(shù)后處死時(shí)間3 d、7 d、14 d及20 d時(shí)相分組。動(dòng)態(tài)測(cè)定各組各時(shí)相肝細(xì)胞膜鈉泵活性、肝細(xì)胞鈣及膽汁中膽汁酸含量。 結(jié)果BO組及BOI組肝細(xì)胞膜鈉泵活性及膽汁中膽汁酸含量進(jìn)行性下降,肝細(xì)胞鈣含量呈進(jìn)行性增多,與對(duì)照組相比差異有顯著性意義(P<0.01),但BOI組上述變化較BO組明顯(P<0.05)。結(jié)論膽紅素鈣結(jié)石成石過程中存在肝細(xì)胞膜鈉泵活性的進(jìn)行性下降,鈉泵活性下降引起肝細(xì)胞鈣超負(fù)荷及膽汁中膽汁酸含量下降,從而促進(jìn)成石。細(xì)菌感染加重上述變化,使結(jié)石形成增多。
引用本文: 莊文,肖路加,左鳳瓊,東云華,吳忠舜,吳兆鋒. 肝細(xì)胞膜鈉泵活性變化在膽紅素鈣結(jié)石成石過程中的作用. 中國普外基礎(chǔ)與臨床雜志, 2002, 9(2): 73-75. doi: 復(fù)制
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- 2. 曾勇,肖路加,張尚福. 兔膽紅素鈣結(jié)石成石過程中膽囊免疫球蛋白分泌細(xì)胞含量的變化 [J]. 普外基礎(chǔ)與臨床雜志,1997; 4(2)∶75.
- 3. Meeda T, Bismuth H, Sherlock DJ, et al. A simple and rapid method for the preparation of plasma membranes [J]. Biochim Biophys Acta, 1983; 731(5)∶115.
- 4. Jame L, Merion RM, Burtch GD, et al. Properties of Na+K+activated ATPase in rat liver plasma membranes enriched with bile canaliculi [J]. Biochim Biophys Acta, 1975; 401(3)∶59.
- 5. Schanne FA, Muller C, Endlich K, et al. Liver plasma membrane calcium transport [J]. J Biol Chem, 1986; 261(21)∶9886.
- 6. Michael H, Garrel T, Decurtins M, et al. Mechanisms and regulations of bile secretion [J]. Hepatology, 1991; 14(3)∶551.
- 7. Frimmer M, Grant B, Zobeck TS, et al. The transport of bile acids in liver cells [J]. Biochim Biophys Acta, 1988; 947(8)∶75.
- 8. Chung TY. Calcium and ischemic injury [J]. New Engl J Med, 1986;314(26)∶1670.
- 9. Victor A, Inan M, Sayek I, et al. Conditions that results in the mobilization and influx of Ca2+ into rat hepatocytes induce the rapid loss of HMGCoA reductase activity that is not reversed by phosphatase treatment [J]. Biochem J, 1990; 269(9)∶373.