Dysregulation of glucose metabolism is an early event in sporadic Parkinson's disease
العنوان: | Dysregulation of glucose metabolism is an early event in sporadic Parkinson's disease |
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المؤلفون: | Dunn, Laura, Allen, George FG., Mamais, Adamantios, Ling, Helen, Li, Abi, Duberley, Kate E., Hargreaves, Iain P., Pope, Simon, Holton, Janice L., Lees, Andrew, Heales, Simon J., Bandopadhyay, Rina |
المصدر: | Neurobiology of Aging. 35(5):1111-1115 |
بيانات النشر: | Elsevier BV, 2014. |
سنة النشر: | 2014 |
مصطلحات موضوعية: | Glucose metabolism, Ageing, Parkinson's disease, Neuroscience(all), NADPH, Clinical Neurology, Pentose-phosphate pathway, Neurodegeneration, Geriatrics and Gerontology, Developmental Biology |
الوصف: | Unlike most other cell types, neurons preferentially metabolize glucose via the pentose phosphate pathway (PPP) to maintain their antioxidant status. Inhibiting the PPP in neuronal cell models causes cell death. In rodents, inhibition of this pathway causes selective dopaminergic cell death leading to motor deficits resembling parkinsonism. Using postmortem human brain tissue, we characterized glucose metabolism via the PPP in sporadic Parkinson's disease (PD), Alzheimer's disease (AD), and controls. AD brains showed increased nicotinamide adenine dinucleotide phosphate (NADPH) production in areas affected by disease. In PD however, increased NADPH production was only seen in the affected areas of late-stage cases. Quantifying PPP NADPH-producing enzymes glucose-6-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase by enzyme-linked immunosorbent assay, showed a reduction in the putamen of early-stage PD and interestingly in the cerebellum of early and late-stage PD. Importantly, there was no decrease in enzyme levels in the cortex, putamen, or cerebellum of AD. Our results suggest that down-regulation of PPP enzymes and a failure to increase antioxidant reserve is an early event in the pathogenesis of sporadic PD. |
تدمد: | 0197-4580 |
DOI: | 10.1016/j.neurobiolaging.2013.11.001 |
الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::11df38d258db11ecb573f1a390289cf2Test |
حقوق: | OPEN |
رقم الانضمام: | edsair.dedup.wf.001..11df38d258db11ecb573f1a390289cf2 |
قاعدة البيانات: | OpenAIRE |
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