Essential fatty acids in clinically stable children with propionic acidaemia |
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Authors: | T Decsi W Sperl B Koletzko |
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Institution: | (1) Kinderpoliklinik, Ludwig-Maximilians University, Munich, Germany;(2) Present address: Department of Paediatrics, University Medical School of Pécs, Pécs, Hungary;(3) Department of Paediatrics, University of Innsbruck, Innsbruck, Austria;(4) Present address: Kinderspital, Landeskrankenanstalten Salzburg, Austria;(5) Kinderpoliklinik, Ludwig-Maximilians-University of Munich, Pettenkoferstr. 8a, D-80336 München, Germany |
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Abstract: | Disturbances of fatty acid metabolism with accumulation of odd-chain fatty acids have been reported in propionic acidaemia (PA). It is not known whether the synthesis of long-chain polyunsaturated fatty acids (LCPUFA) is also affected. In five clinically stable children with PA (median age 8 years, range 3.5-9.5 years; median percentage fibroblast propionyl-CoA carboxylase activity 0.8, range 0.8-1.5), we determined the fatty acid composition of plasma phospholipids, triglycerides and sterol esters and compared the results with those of 18 age-matched healthy controls. Odd-numbered fatty acids were found in all samples of PA patients but in controls median values were zero. Percentage contributions of substrate (linoleic acid, C18:2 -6) and principal product (arachidonic acid, C20:4 -6) of -6 LCPUFA synthesis did not differ between patients and controls. Similarly, there were no differences between both groups in the substrate ( -linolenic acid, C18:3 -3) and principal product (docosahexaenoic acid, C22:6 -3) of -3 LCPUFA formation. We conclude that disturbances of fatty acid metabolism in clinically stable children with PA do not affect LCPUFA synthesis. |
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