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Determinants of blood acylcarnitine concentrations in healthy individuals of the European Prospective Investigation into Cancer and Nutrition
Nutrition and Metabolism Branch, International Agency for Research on Cancer, 150 Cours Albert Thomas, Lyon, France.
(CESP), Faculté de Medicine, Université Paris-Saclay, Inserm, Villejuif, France; Institut Gustave Roussy, Villejuif, France.
Nutrition and Metabolism Branch, International Agency for Research on Cancer, 150 Cours Albert Thomas, Lyon, France.
Nutrition and Metabolism Branch, International Agency for Research on Cancer, 150 Cours Albert Thomas, Lyon, France.
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2022 (engelsk)Inngår i: Clinical Nutrition, ISSN 0261-5614, E-ISSN 1532-1983, Vol. 41, nr 8, s. 1735-1745Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Background & aims: Circulating levels of acylcarnitines (ACs) have been associated with the risk of various diseases such as cancer and type 2 diabetes. Diet and lifestyle factors have been shown to influence AC concentrations but a better understanding of their biological, lifestyle and metabolic determinants is needed.

Methods: Circulating ACs were measured in blood by targeted (15 ACs) and untargeted metabolomics (50 ACs) in 7770 and 395 healthy participants of the European Prospective Investigation into Cancer and Nutrition (EPIC), respectively. Associations with biological and lifestyle characteristics, dietary patterns, self-reported intake of individual foods, estimated intake of carnitine and fatty acids, and fatty acids in plasma phospholipid fraction and amino acids in blood were assessed.

Results: Age, sex and fasting status were associated with the largest proportion of AC variability (partial-r up to 0.19, 0.18 and 0.16, respectively). Some AC species of medium or long-chain fatty acid moiety were associated with the corresponding fatty acids in plasma (partial-r = 0.24) or with intake of specific foods such as dairy foods containing the same fatty acid. ACs of short-chain fatty acid moiety (propionylcarnitine and valerylcarnitine) were moderately associated with concentrations of branched-chain amino acids (partial-r = 0.5). Intake of most other foods and of carnitine showed little association with AC levels.

Conclusions: Our results show that determinants of ACs in blood vary according to their fatty acid moiety, and that their concentrations are related to age, sex, diet, and fasting status. Knowledge on their potential determinants may help interpret associations of ACs with disease risk and inform on potential dietary and lifestyle factors that might be modified for disease prevention.

sted, utgiver, år, opplag, sider
Elsevier, 2022. Vol. 41, nr 8, s. 1735-1745
Emneord [en]
Acylcarnitines, Branched-chain amino acids, Diet, Fatty acids, Metabolomics
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Identifikatorer
URN: urn:nbn:se:umu:diva-198033DOI: 10.1016/j.clnu.2022.05.020ISI: 000822382600013Scopus ID: 2-s2.0-85133224937OAI: oai:DiVA.org:umu-198033DiVA, id: diva2:1683338
Forskningsfinansiär
Swedish Cancer SocietySwedish Research CouncilTilgjengelig fra: 2022-07-15 Laget: 2022-07-15 Sist oppdatert: 2023-09-05bibliografisk kontrollert

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