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• W2996469070 abstract "Cognitive impairment in type 2 diabetes is associated with cerebral glucose hypometabolism. Providing a glucose substitute such as ketone bodies might restore metabolic balance in glucose-compromised neurones and improve cognitive performance. We aimed to investigate if β-hydroxybutyrate (ketone body) infusion acutely affects cognitive performance, measured by a neuropsychological test battery, in patients with type 2 diabetes.Randomised, placebo-controlled, double-blind cross-over trial.Eighteen patients with type 2 diabetes received i.v. ketone body (β-hydroxybutyrate) and placebo (saline) infusion in a randomised order on two separate occasions. On both days of examination, blood glucose was clamped at 7.5 mmol/L and a neuropsychological test battery was used to assess global cognitive performance (primary outcome) and specialized cognitive measures of verbal memory, working memory, executive function, psychomotor speed, and sustained attention.During neurocognitive testing, β-hydroxybutyrate concentrations were 2.4 vs 0.1 mmol/L. Working memory assessed by Wechsler Adult Intelligence Scale letter-number-sequencing significantly improved by 1.6 points (95% CI: 0.7, 2.4; non-adjusted P < 0.001) corresponding to a 17% increase in performance during ketone infusion compared to placebo. There was no change for global cognitive performance or any other cognitive measure after adjusting for multiple comparisons. Blood concentrations of β-hydroxybutyrate and glycaemic status did not associate with test performance; however, insulin resistance measured by HOMA was related to improved working memory performance during ketone infusion (β = 4%; 95% CI: 1.1, 7.7; P = 0.012).Ketone infusion specifically improved working memory performance in patients with type 2 diabetes in the absence of changes in global cognition." @default.
• W2996469070 created "2019-12-26" @default.
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• W2996469070 date "2020-02-01" @default.
• W2996469070 modified "2023-10-17" @default.
• W2996469070 title "Effects of β-hydroxybutyrate on cognition in patients with type 2 diabetes" @default.
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• W2996469070 doi "https://doi.org/10.1530/eje-19-0710" @default.
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