Association between the indole pathway of tryptophan metabolism and subclinical depressive symptoms in obesity: a preliminary study
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Article de revue
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International Journal of Obesity. 2022-01-10, vol. 46, n° 4, p. 885-888
Resumen en inglés
Converging data support the role of chronic low-grade inflammation in depressive symptomatology in obesity. One mechanism likely to be involved relies on the effects of inflammation on tryptophan (TRP) metabolism. While ...Leer más >
Converging data support the role of chronic low-grade inflammation in depressive symptomatology in obesity. One mechanism likely to be involved relies on the effects of inflammation on tryptophan (TRP) metabolism. While recent data document alterations in the indole pathway of TRP metabolism in obesity, the relevance of this mechanism to obesity-related depressive symptoms has not been investigated. The aim of this preliminary study was to assess the association between plasma levels of TRP and indole metabolites and depressive symptoms in 44 subjects with severe or morbid obesity, free of clinically relevant neuropsychiatric disorders. The interaction effect of inflammation, reflected in serum high-sensitive C-reactive protein (hsCRP) levels, and indoles on depressive symptoms was also determined. Higher serum levels of hsCRP and lower concentrations of TRP and indoles, particularly indole-3-carboxaldehyde (IAld), correlated with more severe depressive symptoms. Interestingly, the effect of high hsCRP levels in predicting greater depressive symptoms was potentiated by low IAld levels. These results comfort the link between inflammation, the indole pathway of TRP metabolism, and obesity-related depressive symptoms. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.< Leer menos
Palabras clave en inglés
Metabolism
Obesity
Proteins
Risk factors
Proyecto ANR
Metabolic HEALTH through nutrition, microbiota and tryptophan bioMARKers - ANR-16-HDHL-0003
Centros de investigación