1. Dietary Glycemic Load and Plasma Amyloid-β Biomarkers of Alzheimer’s Disease
- Author
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Virginie Chuy, Michel Raymond, Sylvaine Artero, Cecilia Samieri, Catherine FEART, Claire Berticat, Mélissa Gentreau, Institut de Génomique Fonctionnelle (IGF), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Institut des Sciences de l'Evolution de Montpellier (UMR ISEM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de recherche pour le développement [IRD] : UR226-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Bordeaux population health (BPH), Université de Bordeaux (UB)-Institut de Santé Publique, d'Épidémiologie et de Développement (ISPED)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Bordeaux [Bordeaux], Guerineau, Nathalie C., and Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE)
- Subjects
Amyloid beta-Peptides ,Nutrition and Dietetics ,[SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology ,Apolipoprotein E4 ,digestive, oral, and skin physiology ,[SDV.NEU.NB] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology ,cohort ,amyloid-β ,Peptide Fragments ,Diet ,[SDV.AEN] Life Sciences [q-bio]/Food and Nutrition ,Alzheimer Disease ,[SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie ,refined carbohydrate ,glycemic load ,Humans ,biomarker ,[SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie ,Prospective Studies ,Alzheimer’s disease ,[SDV.AEN]Life Sciences [q-bio]/Food and Nutrition ,Biomarkers ,Food Science - Abstract
International audience; Previous studies have highlighted links between a high-glycemic-load (GL) diet and Alzheimer's disease in apolipoprotein E ε4 (APOE4) carriers. However, the impact of high-GL diet on plasma amyloid-β (Aβ), an Alzheimer's disease hallmark that can be detected decades before clinical symptomatology, is unknown. This study examined the association between plasma Aβ peptides (Aβ40, Aβ42 concentration and Aβ42/Aβ40 ratio) and GL. The influence of the GL of four meal types (breakfast, lunch, afternoon snack, and dinner) was also determined. From the prospective Three-City study, 377 participants with plasma Aβ measurements, and who completed the Food Frequency Questionnaire, were selected. The association between plasma Aβ and GL was tested using an adjusted linear regression model. Lunch GL was associated with a lower plasma Aβ42 concentration (β = -2.2 [CI = -4.27, -0.12], p = 0.038) and lower Aβ42/Aβ40 ratio (β = -0.009 [CI = -0.0172, -0.0007], p = 0.034) in the model adjusted for center, age, sex, education level, APOE4 status, energy intake, serum creatinine, total cholesterol, and Mediterranean-like diet. No significant association was found with the GL of the other meal types. These results suggest that dietary GL may independently modulate the plasma Aβ of the APOE4 status. The mechanism underlying diet, metabolic response, and Aβ peptide regulation must be elucidated.
- Published
- 2022
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