Effects of chronic liver diseases on mitochondrial DNA transcription and replication in human liver.

Effects of chronic liver diseases on mitochondrial DNA transcription and replication in human liver.
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慢性肝病对人肝脏线粒体 DNA 转录和复制的影响。

DOI:
10.1016/s0024-3205(99)00276-3
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发表时间:
1999
期刊:
影响因子:
6.1
通讯作者:
Y. Shimomura
Y. Shimomura
中科院分区:
医学2区
文献类型:
--
作者:
K. Kotake;T. Nonami;T. Kurokawa;A. Nakao;T. Murakami;Y. Shimomura

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为了评估慢性肝病对线粒体DNA(mtDNA)转录和复制的影响,在正常、慢性病毒性肝炎和慢性肝炎人肝脏中测定了核呼吸因子-1(NRF-1)mRNA、线粒体转录因子A(mtTFA)mRNA、线粒体RNA加工(MRP)核糖核酸酶(RNase)的RNA组分、线粒体细胞色素B mRNA和mtDNA。与正常肝脏相比,慢性肝炎线粒体基因调节因子(NRF-1和mtTFA)和细胞色素B的mRNA水平显着升高(分别为160%、280%和175%),但肝硬化与正常肝脏之间没有差异。另一方面,在正常、慢性肝炎和慢性肝病肝脏中,线粒体DNA和RNase MRP的RNA组分的浓度没有差异。这些结果表明,无论是持续性肝炎病毒感染或慢性肝炎肝细胞反复坏死和再生可能与线粒体DNA转录增加。
To evaluate the effects of chronic liver diseases on mitochondrial DNA (mtDNA) transcription and replication, nuclear respiratory factor-1 (NRF-1) mRNA, mitochondrial transcription factor A (mtTFA) mRNA, a RNA component of ribonuclease (RNase) for mitochondrial RNA processing (MRP), mitochondrial cytochrome b mRNA, and mtDNA were measured in normal, chronically viral-hepatitic and cirrhotic human livers. The mRNA levels of the regulatory factors for mitochondrial gene (NRF-1 and mtTFA) and cytochrome b were significantly increased by chronic hepatitis (160, 280, and 175 %, respectively) compared with those in normal livers, but were not different between cirrhotic and normal livers. On the other hand, concentrations of mtDNA and RNA component of RNase MRP were not different among normal, chronically hepatitic, and cirrhotic livers. These results suggest that either persistent hepatitis viral infection or repeated cell necrosis and regeneration in chronically hepatitic liver may be associated with increase in mtDNA transcription.
DOI: --
发表时间: 1993-08
期刊: The Journal of biological chemistry
影响因子: --
作者:
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通讯作者: G. Shadel;D. Clayton
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期刊: The Journal of biological chemistry
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影响因子: 10.5
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