ArticleNutrients2026
Divergent Liver and Kidney Metabolic Responses to Ketogenic, High-Fat, and Sucrose-Enriched Diets in Mice.
Article in Nutrients, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
BACKGROUND/
objectivesFeeding with a ketogenic diet (KD), nutritionally devoid of carbohydrates, may be metabolically beneficial. The administration of a KD to mice after previous feeding with a high-fat, high-carbohydrate diet (HFD) induced weight loss, ketonemia, and glycemic normalization. Here, to compare organ-specific responses to KD, we analyzed lipogenic and gluconeogenic enzymes and genes in the liver and kidney of mice submitted to KD versus (i) HFD or (ii) a saccharose-enriched diet.
methodsLiver and kidney were from (i) mice fed a HFD followed by an 8-week switch to a chow diet (CD), KD continuation of HFD, and (ii) mice submitted to CD, KD, or a saccharose-enriched diet for 1 week. Protein expression levels were determined by Western blotting, and gene expression by qPCR. Hepatic lipid accumulation was visualized by red oil-O.
resultsSwitch to a KD led to a simultaneous decrease in lipogenic FASN (Fatty Acid Synthase), ACC (Acetyl-CoenzymeA Carboxylase), and its phosphorylated form (pACC-Ser79) in the liver and kidney. In parallel, we observed increased activating phosphorylation of AMPK, the kinase responsible for ACC phosphorylation. In the liver, but not in the kidney, the gluconeogenic rate-limiting enzyme G6Pase (Glucose 6-phosphatase) was repressed under a KD. The switch to a CD significantly reduced hepatic fat accumulation, while a switch to a KD did not allow a significant reversal of hepatic fat accumulation, suggesting resilience to hepatic fat loss under KD. Comparison of a KD versus saccharose-supplemented diet showed an opposite expression pattern of lipogenic enzymes.
conclusionsAdministration of KD after previous HFD induced convergent repression of lipogenic enzymes in the liver and kidney, and specific repression of G6Pase in the liver, suggesting a role for kidney gluconeogenesis during KD. KD versus saccharose-supplemented diet had opposite effects on lipogenesis and glycemic control, but both induced loss of lean body mass.
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