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dc.contributor.authorJunaid, Kehinde
dc.date.accessioned2021-07-27T09:52:57Z
dc.date.available2021-07-27T09:52:57Z
dc.date.issued2021
dc.identifier.citationFemminella, G. D., Livingston, N. R., Raza, S., van der Doef, T., Frangou, E., Love, S., Busza, G., Calsolaro, V., Carver, S., Holmes, C., et al. (2021). Does insulin resistance influence neurodegeneration in non-diabetic Alzheimer's subjects? Alzheimers Research & Therapy, 13, pp.47, DOI: 10.1186/s13195-021-00784-wen_US
dc.identifier.other10.1186/s13195-021-00784-w
dc.identifier.urihttp://hdl.handle.net/20.500.12904/14706
dc.descriptionOpen Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
dc.description.abstractBackgroundType 2 diabetes is a risk factor for Alzheimer's disease (AD), and AD brain shows impaired insulin signalling. The role of peripheral insulin resistance on AD aetiopathogenesis in non-diabetic patients is still debated. Here we evaluated the influence of insulin resistance on brain glucose metabolism, grey matter volume and white matter lesions (WMLs) in non-diabetic AD subjects.MethodsIn total, 130 non-diabetic AD subjects underwent MRI and [18F]FDG PET scans with arterial cannula insertion for radioactivity measurement. T1 Volumetric and FLAIR sequences were acquired on a 3-T MRI scanner. These subjects also had measurement of glucose and insulin levels after a 4-h fast on the same day of the scan. Insulin resistance was calculated by the updated homeostatic model assessment (HOMA2). For [18F]FDG analysis, cerebral glucose metabolic rate (rCMRGlc) parametric images were generated using spectral analysis with arterial plasma input function.ResultsIn this non-diabetic AD population, HOMA2 was negatively associated with hippocampal rCMRGlc, along with total grey matter volumes. No significant correlation was observed between HOMA2, hippocampal volume and WMLs.ConclusionsIn non-diabetic AD, peripheral insulin resistance is independently associated with reduced hippocampal glucose metabolism and with lower grey matter volume, suggesting that peripheral insulin resistance might influence AD pathology by its action on cerebral glucose metabolism and on neurodegeneration.
dc.description.urihttps://alzres.biomedcentral.com/articles/10.1186/s13195-021-00784-w
dc.language.isoenen_US
dc.subjectAlzheimer diseaseen_US
dc.subjectDrug resistanceen_US
dc.subjectMagnetic resonance imagingen_US
dc.subjectWhite matteren_US
dc.titleDoes insulin resistance influence neurodegeneration in non-diabetic Alzheimer's subjects?en_US
rioxxterms.funderDefault funderen_US
rioxxterms.identifier.projectDefault projecten_US
rioxxterms.versionNAen_US
rioxxterms.typeJournal Article/Reviewen_US
refterms.dateFOA2021-12-02T16:29:52Z
refterms.panelUnspecifieden_US
refterms.dateFirstOnline2021-02-17
html.description.abstractBackgroundType 2 diabetes is a risk factor for Alzheimer's disease (AD), and AD brain shows impaired insulin signalling. The role of peripheral insulin resistance on AD aetiopathogenesis in non-diabetic patients is still debated. Here we evaluated the influence of insulin resistance on brain glucose metabolism, grey matter volume and white matter lesions (WMLs) in non-diabetic AD subjects.MethodsIn total, 130 non-diabetic AD subjects underwent MRI and [18F]FDG PET scans with arterial cannula insertion for radioactivity measurement. T1 Volumetric and FLAIR sequences were acquired on a 3-T MRI scanner. These subjects also had measurement of glucose and insulin levels after a 4-h fast on the same day of the scan. Insulin resistance was calculated by the updated homeostatic model assessment (HOMA2). For [18F]FDG analysis, cerebral glucose metabolic rate (rCMRGlc) parametric images were generated using spectral analysis with arterial plasma input function.ResultsIn this non-diabetic AD population, HOMA2 was negatively associated with hippocampal rCMRGlc, along with total grey matter volumes. No significant correlation was observed between HOMA2, hippocampal volume and WMLs.ConclusionsIn non-diabetic AD, peripheral insulin resistance is independently associated with reduced hippocampal glucose metabolism and with lower grey matter volume, suggesting that peripheral insulin resistance might influence AD pathology by its action on cerebral glucose metabolism and on neurodegeneration.en_US
rioxxterms.funder.project94a427429a5bcfef7dd04c33360d80cden_US


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