Kinetic Modeling of Storage Effects on Biomarkers Related to B Vitamin Status and One-Carbon Metabolism
| العنوان: | Kinetic Modeling of Storage Effects on Biomarkers Related to B Vitamin Status and One-Carbon Metabolism |
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| المؤلفون: | Puck M. Van De Kant, Lars Mørkrid, Per Magne Ueland, Simone J. P. M. Eussen, Øivind Midttun, Randi Elin Gislefoss, Arve Ulvik, Steinar Hustad |
| المساهمون: | Epidemiologie, RS: CAPHRI School for Public Health and Primary Care |
| المصدر: | Clinical Chemistry, 58(2), 402-410. American Association for Clinical Chemistry |
| بيانات النشر: | American Association for Clinical Chemistry, 2012. |
| سنة النشر: | 2012 |
| مصطلحات موضوعية: | Adult, Male, Sarcosine, Time Factors, Clinical Biochemistry, Riboflavin, Cobalamin, Dimethylglycine, chemistry.chemical_compound, Choline, Humans, Pyridoxal, Aged, Blood Specimen Collection, Methionine, Chromatography, Models, Statistical, Biochemistry (medical), Middle Aged, B vitamins, Kinetics, Cross-Sectional Studies, chemistry, Biochemistry, Vitamin B Complex, Female, Biomarkers |
| الوصف: | BACKGROUND Biomarkers and metabolites related to B vitamin function and one-carbon metabolism have been studied as predictors of chronic diseases in studies based on samples stored in biobanks. For most biomarkers, stability data are lacking or fragmentary. METHODS Degradation and accumulation kinetics of 32 biomarkers were determined at 23 °C in serum and plasma (EDTA, heparin, and citrate) collected from 16 individuals and stored for up to 8 days. In frozen serum (−25 °C), stability was studied cross-sectionally in 650 archival samples stored for up to 29 years. Concentration vs time curves were fitted to monoexponential, biexponential, linear, and nonlinear models. RESULTS For many biomarkers, stability was highest in EDTA plasma. Storage effects were similar at room temperature and at −25 °C; notable exceptions were methionine, which could be recovered as methionine sulfoxide, and cystathionine, which decreased in frozen samples. Cobalamin, betaine, dimethylglycine, sarcosine, total homocysteine, total cysteine, tryptophan, asymetric and symmetric dimethyl argenine, creatinine, and methylmalonic acid were essentially stable under all conditions. Most B vitamins (folate and vitamins B2 and B6) were unstable; choline increased markedly, and some amino acids also increased, particularly in serum. The kynurenines showed variable stability. For many biomarkers, degradation (folate and flavin mononucleotide) or accumulation (pyridoxal, riboflavin, choline, amino acids) kinetics at room temperature were non–first order. CONCLUSIONS Data on stability and deterioration kinetics for individual biomarkers are required to optimize procedures for handling serum and plasma, and for addressing preanalytical bias in epidemiological and clinical studies. |
| اللغة: | English |
| تدمد: | 1530-8561 0009-9147 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::441e36b431a82d594a392aeea0152053 https://cris.maastrichtuniversity.nl/en/publications/4004a481-3f84-4ec3-b3fb-d7978255ba1e |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....441e36b431a82d594a392aeea0152053 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15308561 00099147 |
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