Prenatal Hypoxia Reduces Mitochondrial Protein Levels and Cytochrome c Oxidase Activity in Offspring Guinea Pig Hearts

被引：24
作者：
Al-Hasan, Yazan M. [1 ]
Pinkas, Gerard A. [2 ]
Thompson, Loren P. [2 ]
机构：
[1] Univ Maryland, Dept Physiol, Baltimore, MD 21201 USA
[2] Univ Maryland, Dept Obstet Gynecol & Reprod Sci, Baltimore, MD 21201 USA
来源：
REPRODUCTIVE SCIENCES | 2014年 / 21卷 / 07期
关键词：
cardiac; electron transport chain; programming; GROWTH RESTRICTION INCREASES; NUCLEAR RESPIRATORY FACTORS; ACTIVATED RECEPTOR-ALPHA; NITRIC-OXIDE; DNA METHYLATION; GENE-EXPRESSION; TRANSCRIPTIONAL ACTIVATION; REPERFUSION INJURY; OXIDATIVE STRESS; FETAL;
D O I：
10.1177/1933719113518981
中图分类号：
R71 [妇产科学];
学科分类号：
100211 ;
摘要：
Prenatal hypoxia (HPX) reduces mitochondrial cytochrome c oxidase (CCO and COX) activity in fetal guinea pig (GP) hearts. The aim of this study was to quantify the lasting effects of chronic prenatal HPX on cardiac mitochondrial enzyme activity and protein expression in offspring hearts. Pregnant GPs were exposed to either normoxia (NMX) or HPX (10.5%O-2) during the last 14 days of pregnancy. Both NMX and HPX fetuses, delivered vaginally, were housed under NMX conditions until 90 days of age. Total RNA and mitochondrial fractions were isolated from hearts of anesthetized NMX and HPX offspring and showed decreased levels of CCO but not medium-chain acyl dehydrogenase activity, protein levels of nuclear-and mitochondrial-encoded COX4 and COX1, respectively, and messenger RNA expression of peroxisome proliferator-activated receptor gamma coactivator 1-alpha, COX5b, and 4.1 compared to NMX controls. Prenatal HPX may alter mitochondrial function in the offspring by disrupting protein expression associated with the respiratory chain.
引用
收藏
页码：883 / 891
页数：9
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