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Title

Lysine pathway metabolites and the risk of type 2 diabetes and cardiovascular disease in the PREDIMED study: results from two case-cohort studies

AuthorsRazquin, Cristina; Ruiz-Canela, Miguel; Clish, Clary B.; Li, Jun ; Toledo, Estefania; Dennis, Courtney; Liang, Liming; Salas-Huetos, Albert; Pierce, Kerry A.; Guasch‐Ferré, Marta; Corella, Dolores; Ros, Emilio; Estruch, Ramón; Gómez-Gracia, Enrique; Fitó, Montserrat; Lapetra, Jose; Romaguera, Dora; Alonso-Gómez, Ángel M.; Serra-Majem, Lluis; Salas-Salvadó, Jordi; Hu, Frank B.; Martínez-González, Miguel Ángel
KeywordsBiomarkers
Cardiovascular disease
Dietary intervention
Metabolites
Type 2 diabetes
Issue Date2019
PublisherBioMed Central
CitationCardiovascular Diabetology 18(1): 151 (2019)
Abstract[Background]: The pandemic of cardiovascular disease (CVD) and type 2 diabetes (T2D) requires the identification of new predictor biomarkers. Biomarkers potentially modifiable with lifestyle changes deserve a special interest. Our aims were to analyze: (a) The associations of lysine, 2-aminoadipic acid (2-AAA) or pipecolic acid with the risk of T2D or CVD in the PREDIMED trial; (b) the effect of the dietary intervention on 1-year changes in these metabolites, and (c) whether the Mediterranean diet (MedDiet) interventions can modify the effects of these metabolites on CVD or T2D risk. [Methods]: Two unstratified case-cohort studies nested within the PREDIMED trial were used. For CVD analyses, we selected 696 non-cases and 221 incident CVD cases; for T2D, we included 610 non-cases and 243 type 2 diabetes incident cases. Metabolites were quantified using liquid chromatography-tandem mass spectrometry, at baseline and after 1-year of intervention. [Results]: In weighted Cox regression models, we found that baseline lysine (HR+1 SD increase = 1.26; 95% CI 1.06-1.51) and 2-AAA (HR+1 SD increase = 1.28; 95% CI 1.05-1.55) were both associated with a higher risk of T2D, but not with CVD. A significant interaction (p = 0.032) between baseline lysine and T2D on the risk of CVD was observed: subjects with prevalent T2D and high levels of lysine exhibited the highest risk of CVD. The intervention with MedDiet did not have a significant effect on 1-year changes of the metabolites. [Conclusions]: Our results provide an independent prospective replication of the association of 2-AAA with future risk of T2D. We show an association of lysine with subsequent CVD risk, which is apparently diabetes-dependent. No evidence of effects of MedDiet intervention on lysine, 2-AAA or pipecolic acid changes was found. Trial registration ISRCTN35739639; registration date: 05/10/2005; recruitment start date 01/10/2003.
Publisher version (URL)https://doi.org/10.1186/s12933-019-0958-2
URIhttp://hdl.handle.net/10261/212659
DOIhttp://dx.doi.org/10.1186/s12933-019-0958-2
Identifiersdoi: 10.1186/s12933-019-0958-2
e-issn: 1475-2840
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