{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T13:29:24Z","timestamp":1789738164308,"version":"4.0.1"},"reference-count":31,"publisher":"Oxford University Press (OUP)","issue":"7","license":[{"start":{"date-parts":[[2006,7,1]],"date-time":"2006-07-01T00:00:00Z","timestamp":1151712000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2006,7,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Background: Many severe diseases are caused by defects in lipid metabolism. As a result, patients often accumulate unusual lipids in their blood and tissues, and proper identification of these lipids is essential for correct diagnosis. In this study, we investigated the potential use of proton nuclear magnetic resonance (1H-NMR) spectroscopy to simultaneously identify and quantify (un)usual lipids present in the blood of patients with different inborn errors of lipid metabolism.<\/jats:p><jats:p>Methods: We extracted blood plasma or serum lipids in chloroform\u2013methanol (2:1 by volume). After addition of the nonvolatile chemical shift and concentration reference compound octamethylcyclotetrasiloxane, we performed 1H-NMR measurements on a 500-MHz spectrometer. Assignments were based on the literature, computer simulations, and reference spectra of relevant authentic standards.<\/jats:p><jats:p>Results: Spectra of normal plasma samples allowed the identification of 9 lipid species. We found good correlation between conventional methods and 1H-NMR for cholesterol and triglyceride concentrations. We also investigated 4 inborn errors of lipid metabolism (3 in sterol metabolism and 1 in fatty acid metabolism). NMR analysis led to a correct diagnosis for all 4 diseases, whereas the concentration of the diagnostic metabolite could be determined for 3.<\/jats:p><jats:p>Conclusions: 1H-NMR spectroscopy of blood plasma or serum lipid extracts can be used to accurately identify and quantify lipids. The method can also identify unusual lipids in the blood of patients with inborn errors of lipid metabolism. This technique may therefore be applicable in clinical diagnosis and follow-up.<\/jats:p>","DOI":"10.1373\/clinchem.2006.069112","type":"journal-article","created":{"date-parts":[[2006,5,19]],"date-time":"2006-05-19T00:43:13Z","timestamp":1147999393000},"page":"1395-1405","source":"Crossref","is-referenced-by-count":88,"title":["Diagnosing Inborn Errors of Lipid Metabolism with Proton Nuclear Magnetic Resonance Spectroscopy"],"prefix":"10.1093","volume":"52","author":[{"given":"Marlies","family":"Oostendorp","sequence":"first","affiliation":[{"name":"Laboratory of Pediatrics and Neurology and Department of Pediatric Neurology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Udo FH","family":"Engelke","sequence":"first","affiliation":[{"name":"Laboratory of Pediatrics and Neurology and Department of Pediatric Neurology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Miche\u0300l AAP","family":"Willemsen","sequence":"first","affiliation":[{"name":"Laboratory of Pediatrics and Neurology and Department of Pediatric Neurology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ron A","family":"Wevers","sequence":"first","affiliation":[{"name":"Laboratory of Pediatrics and Neurology and Department of Pediatric Neurology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2006,7,1]]},"reference":[{"key":"2020022801251974200_R1","doi-asserted-by":"crossref","unstructured":"Wevers RA, Engelke U, Wendel U, de Jong JG, Gabree\u0308ls FJ, Heerschap A. 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