Sulaj, A.* ; Nguyen, B.H.P. ; Poschet, G.* ; Kliemank, E.* ; Fleming, T.* ; Henke, L.* ; Neibig, W.* ; Kopf, S.* ; Hell, R.* ; Longo, V.D.* ; Herzig, S. ; Nawroth, P.P. ; Menden, M.P. ; Szendroedi, J.
Periodic fasting induced reconstitution of metabolic flexibility improves albuminuria in patients with type 2 diabetes.
Mol. Metab. 102:102257 (2025)
OBJECTIVE: Metabolic inflexibility has been shown to be associated with type 2 diabetes (T2D) and diabetic nephropathy (DN). However, data are lacking, proving that reconstitution of metabolic flexibility by using a 6-month periodic fasting (PF) regimen may improve albuminuria. RESEARCH DESIGN AND METHODS: In this post hoc analysis of a randomized-controlled trial, we investigated whether the PF regimen enhanced metabolic flexibility in individuals with T2D and DN showing improvement of albuminuria (responders) compared to non-responders. Participants followed every month either a 5-day fasting-mimicking diet or a Mediterranean diet for 6 months. LC-MS/MS-based comprehensive metabolic profiling was performed in plasma samples before, during, and after the intervention. Changes in metabolomic patterns and enriched signalling pathways were analysed between study groups. RESULTS: PF induced a sustained shift toward enhanced fatty acid oxidation, lipid utilization, and amino acids turnover, particularly in responders. Responders exhibited persistent elevations in short-chain acylcarnitines and cholesteryl esters, indicating more efficient lipid oxidation and tighter integration of lipid metabolism with the tricarboxylic acid cycle. Increased glycine and serine levels suggested enhanced cellular maintenance, a protein-sparing effect, and a metabolic shift favouring lipid over carbohydrate. In contrast, non-responders demonstrated only transient and limited metabolic shifts. Unsupervised clustering identified distinct metabolic response patterns, reinforcing the potential of personalized dietary interventions. CONCLUSIONS: These findings demonstrate that diet-induced restoration of metabolic flexibility is associated with improved albuminuria in T2D, suggesting broader implications for precise nutritional strategies in diabetes management.
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Publication type
Article: Journal article
Document type
Scientific Article
Thesis type
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Keywords
Albuminuria ; Metabolic Flexibility ; Periodic Fasting ; Type 2 Diabetes; Glycine Metabolism; Insulin-resistance; Nephropathy; Progression; Mechanisms; Expression; Subgroups; Nutrition; Disease; Risk
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Language
english
Publication Year
2025
Prepublished in Year
0
HGF-reported in Year
2025
ISSN (print) / ISBN
2212-8778
e-ISSN
2212-8778
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Quellenangaben
Volume: 102,
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Article Number: 102257
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Elsevier
Publishing Place
Amsterdam
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Reviewing status
Peer reviewed
POF-Topic(s)
90000 - German Center for Diabetes Research
30205 - Bioengineering and Digital Health
Research field(s)
Helmholtz Diabetes Center
Enabling and Novel Technologies
PSP Element(s)
G-501900-251
G-554700-001
G-501900-382
Grants
Olympia Morata funding program of the Medical Faculty Heidelberg
(German Diabetes Society)
Deutsche Diabetes Gesellschaft
German Center for Diabetes Research)
Deutsches Zentrum fr Diabetesforschung (DZD
Copyright
Erfassungsdatum
2025-11-03