Yan L N
First Affiliated Hospital, West China University of Medical Sciences, Chengdu.
Zhonghua Wai Ke Za Zhi. 1990 May;28(5):295-7, 318-9.
In this study, changes of hepatic cellular ATP, ADP, and AMP, concentrations and mitochondrial oxidative phosphorylation were investigated in rats with experimental acute necrotizing pancreatitis (ANP). It was found that energy change (ATP + 1/2 ADP)/(ATP + ADP + AMP) of the liver decreased from 0.866 to 0.806 (P less than 0.05) 24 h after ANP, and to 0.769 (P less than 0.01) at 48 h. On the other hand, mitochondrial phosphorylative activity increased to 130% and 157% over the control at 12 h and 24 h respectively, and then rapidly dropped to 62% of normal value at 48 h. Blood ketone body ratio was positively correlated with hepatic energy charge level in ANP. The authors came to the following conclusions that: (1) In ANP, mitochondrial function damage resulted in decreased hepatic energy charge, which, in turn, led to hepatocellular impairment; (2) the measurement of blood ketone body ratio was a reliable indicator by which to assess the energy status of the liver in ANP.
在本研究中,对实验性急性坏死性胰腺炎(ANP)大鼠的肝细胞ATP、ADP和AMP浓度变化以及线粒体氧化磷酸化进行了研究。结果发现,ANP后24小时肝脏的能量变化(ATP + 1/2 ADP)/(ATP + ADP + AMP)从0.866降至0.806(P < 0.05),48小时时降至0.769(P < 0.01)。另一方面,线粒体磷酸化活性在12小时和24小时时分别比对照组增加到130%和157%,然后在48小时时迅速降至正常值的62%。ANP时血酮体比值与肝脏能量电荷水平呈正相关。作者得出以下结论:(1)在ANP中,线粒体功能损害导致肝脏能量电荷降低,进而导致肝细胞损伤;(2)血酮体比值的测定是评估ANP时肝脏能量状态的可靠指标。