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- W2013703071 abstract "Cardiolipin, a unique phospholipid in the inner mitochondrial membrane, is critical for optimal mitochondrial function. CL abnormalities have been demonstrated in the failing rodent and adult human heart. The aim of this study was to determine whether abnormalities in CL content and the CL biosynthesis and remodeling pathways are present in pediatric idiopathic dilated cardiomyopathy (IDC). A cross-sectional analysis of myocardial tissue from 119 IDC and non-failing (NF) control samples was performed. Electrospray ionizing mass spectrometry was used to measure total CL and CL species content in LV tissue. RT-PCR was employed to measure gene expression of the enzymes in the CL biosynthesis and remodeling pathways in both the adult and pediatric heart. Significantly lower total and (18:2)4CL (the beneficial species) content was demonstrated in myocardium from pediatric patients with IDC compared to NF controls. Analysis of mitochondrial gene transcripts was used to demonstrate that there is no decrease in mitochondrial content. Expression of two biosynthesis enzymes and one remodeling enzyme was significantly lower in pediatric IDC compared to NF controls. Expression of two phospholipases involved in CL degradation were also altered, one up- and one down-regulated. Except for one remodeling enzyme, these changes are unique from those in the failing adult heart. Similar to what has been seen in adults and in a rat model of IDC, total and (18:2)4CL are lower in pediatric IDC. Unique CL species profiles are seen in heart tissue from children with IDC compared to adults. Differences in CL biosynthesis and remodeling enzyme expression likely explain the differences in CL profiles observed in IDC and implicate unique age-related mechanisms of disease." @default.
- W2013703071 created "2016-06-24" @default.
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- W2013703071 date "2014-09-01" @default.
- W2013703071 modified "2023-10-02" @default.
- W2013703071 title "Dysregulation of cardiolipin biosynthesis in pediatric heart failure" @default.
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- W2013703071 doi "https://doi.org/10.1016/j.yjmcc.2014.06.002" @default.
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