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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Li, Hong Fukuda, Seiji Hasegawa, Yuki Purevsuren, Jamiyan Kobayashi, Hironori Mushimoto, Yuichi Yamaguchi, Seiji |
| Description | Country affiliation: Japan Author Affiliation: Li H ( Department of Pediatrics, Shimane University School of Medicine, 89-1 Enya-cho, Izumo, Shimane 693-8501, Japan. nxlihong@163.com) |
| Abstract | Mitochondrial fatty acids beta-oxidation disorder (FAOD) has become popular with development of tandem mass spectrometry (MS/MS) and enzymatic evaluation techniques. FAOD occasionally causes acute encephalopathy or even sudden death in children. On the other hand, hyperpyrexia may also trigger severe seizures or encephalopathy, which might be caused by the defects of fatty acid beta-oxidation (FAO). We investigated the effect of heat stress on FAO to determine the relationship between serious febrile episodes and defect in beta-oxidation of fatty acid in children. Fibroblasts from healthy control and children with various FAODs, were cultured in the medium loaded with unlabelled palmitic acid for 96 h at 37 degrees C or 41 degrees C. Acylcarnitine (AC) profiles in the medium were determined by MS/MS, and specific ratios of ACs were calculated. Under heat stress (at 41 degrees C), long-chain ACs (C12, C14, or C16) were increased, while medium-chain ACs (C6, C8, or C10) were decreased in cells with carnitine palmitoyl transferase II deficiency, very-long-chain acyl-CoA dehydrogenase deficiency and mitochondrial trifunctional protein deficiency, whereas AC species from short-chain (C4) to long-chain (C16) were barely affected in medium-chain acyl-CoA dehydrogenase and control. While long-chain ACs (C12-C16) were significantly elevated, short to medium-chain ACs (C4-C10) were reduced in multiple acyl-CoA dehydrogenase deficiency. These data suggest that patients with long-chain FAODs may be more susceptible to heat stress compared to medium-chain FAOD or healthy control and that serious febrile episodes may deteriorate long-chain FAO in patients with long-chain FAODs. |
| File Format | HTM / HTML |
| ISSN | 15700232 |
| Issue Number | 20 |
| Volume Number | 878 |
| e-ISSN | 1873376X |
| Journal | Journal of Chromatography B |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2010-06-15 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Analytical Chemistry Fatty Acids Metabolism Fibroblasts Heat Stress Disorders Lipid Metabolism, Inborn Errors Mitochondria Adolescent Carnitine Analogs & Derivatives Child Chemistry Female Humans Male Oxidation-reduction Tandem Mass Spectrometry Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Medicine Analytical Chemistry Clinical Biochemistry Biochemistry |
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