Ascorbic Acid and the Brain: Rationale for the Use against Cognitive Decline

Harrison, Fiona E.; Bowman, Gene L.; Polidori, Maria Cristina

doi:10.3390/nu6041752

Cited by 82 publications

(80 citation statements)

References 159 publications

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“…These elevated levels of Asc could be viewed alternately as either a response to AD‐related oxidative stress, or AD‐related downregulation of GLUT1 mirroring the putative buildup proposed for Glc, above. It is worth noting that vitamin C supplementation has been studied as a potential AD treatment for its antioxidant properties, but results were disappointing 60. The negative results of those earlier studies may be explicable if the disease causes a buildup of extracellular ascorbate that cannot be taken up by the cell.…”

Section: Discussionmentioning

confidence: 99%

Magnetic resonance spectroscopy reveals abnormalities of glucose metabolism in the Alzheimer's brain

Mullins

Reiter

Kapogiannis

2018

Ann Clin Transl Neurol

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ObjectiveBrain glucose hypometabolism is a prominent feature of Alzheimer's disease (AD), and in this case–control study we used Magnetic Resonance Spectroscopy (MRS) to assess AD‐related differences in the posterior cingulate/precuneal ratio of glucose, lactate, and other metabolites.MethodsJ‐modulated Point‐Resolved Spectroscopy (J‐PRESS) and Prior‐Knowledge Fitting (ProFit) software was used to measure glucose and other metabolites in the posterior cingulate/precuneus of 25 AD, 27 older controls, and 27 younger control participants. Clinical assessments for AD participants included cognitive performance measures, insulin resistance metrics and CSF biomarkers.Results AD participants showed substantially elevated glucose, lactate, and ascorbate levels compared to older (and younger) controls. In addition, the precuneal glucose elevation discriminated well between AD participants and older controls. Myo‐inositol correlated with CSF p‐Tau181P, total Tau, and the Clinical Dementia Rating (CDR) sum‐of‐boxes score within the AD group.InterpretationHigher glucose to creatine ratios in the AD brain likely reflect lower glucose utilization. Our findings reveal pronounced metabolic abnormalities in the AD brain and strongly suggest that brain glucose merits further investigation as a candidate AD biomarker.

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Section: Discussionmentioning

confidence: 99%

Magnetic resonance spectroscopy reveals abnormalities of glucose metabolism in the Alzheimer's brain

Mullins

Reiter

Kapogiannis

2018

Ann Clin Transl Neurol

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“…It easily reacts with reactive oxygen species to neutralize their activity, and become ascorbate free radical, which is then recycled (203). Vitamin C seems to play an important role in neuronal repair, generation of new cells, and expression of many different genes (204).…”

Section: Vitaminsmentioning

confidence: 99%

Alzheimer’s Disease: Dawn of a New Era?

et al. 2017

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Alzheimer’s disease (AD) is an irreversible neurodegenerative disease characterized by a progressive decline in cognition and memory, leading to significant impairment in daily activities and ultimately death. It is the most common cause of dementia, the prevalence of which increases with age; however, age is not the only predisposing factor. The pathology of this cognitive impairing disease is still not completely understood, which has limited the development of valid therapeutic options. Recent years have witnessed a wide range of novel approaches to combat this disease, so that they greatly increased our understanding of the disease and of the unique drug development issues associated with this disease. In this paper, we provide a brief overview of the history, the clinical presentation and diagnosis, and we undertake a comprehensive review of the various approaches that have been brought to clinical trials in recent years, including immunotherapeutic approaches, tau-targeted strategies, neurotransmitter-based therapies, neurotropic and hematopoietic growth factors, and antioxidant therapies, trying to highlight the lessons learned from these approaches. This article is open to POST-PUBLICATION REVIEW. Registered readers (see “For Readers”) may comment by clicking on ABSTRACT on the issue’s contents page.

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“…Beta carotene is present in fruits, vegetables, germ oil etc. Lycopene is also a carotenoid possessed antiproliferative and antioxidative capacity [99,100] .…”

Section: (B) Exogenous Antioxidants In Neurodegenerative Diseasesmentioning

confidence: 99%

Antioxidants as a preventive therapeutic option for age related neurodegenerative diseases

Singh

2015

Ther Targets Neurol Dis

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Neurodegenerative diseases: an overview -Neurodegenerative disease term illustrate a range of conditions in which primarily neurons get affected or die. Neurons are the building blocks of the central and peripheral nervous system. Neurons could not reproduce or replace themselves with age therefore, when they get damaged or die they cannot be replaced and lead to specific neurodegenerative disease. Few evidences for the presence of stem cells are reported [1] but still it is not understood whether damaged neuron could regenerate or not. The Parkinson's, Alzheimer's, and Huntington's diseases are the most prevalent age related neurodegenerative diseases of central nervous system involving death of specific neuronal population. The treatment of these neurodegenerative diseases might involve the re-supplementation of specific neuronal population with the help of stem cells but researchers and clinicians did not get noticeable success in this approach yet. Millions of people each year are getting affected by these neurodegenerative diseases and the incidences are increasing further significantly with the extended life expectancy. It has been reported by World Health Organisation (2006) that the number of older people of more than 65 years age are expected to increase to approximately 1 billion in 2030 worldwide. Developing countries like India and China will see the largest increase in numbers of aged persons. Therefore the percentage of aged population in developing countries would increase from 59% to 71% worldwide [2] . Since occurrence of most of the neurodegenerative Advances in our understanding for neurodegenerative mechanisms have increased significantly in last few decades. But still no novel disease modifying therapy has been developed which could prevent the disease progression and drawn our attention towards the development of new alternative therapy. The major obstacle for the development of disease therapy is incomplete knowledge about neurodegenerative mechanisms. Due to the insufficient information about neurodegenerative mechanisms no standard diagnostic tests for the detection of neurodegenerative disease could be develop to date, causes delayed diagnosis and disease worsening. So far the exploratory reports and clinical data have suggested the involvement of oxidative stress, mitochondrial impairment and apoptosis as major neurodegenerative mechanisms. Investigations have elicited that once initiated the degeneration of neurons could not be arrested therefore in the scarcity of curative therapy we should approach for the preventive neurodegenerative therapy. Since oxidative stress has noteworthy involvement in neuronal death solely, and in connection to other death pathways therefore, antioxidants as preventive therapeutics might provide beneficial effects in age related neurodegenerative diseases. With this hypothesis in this review we are discussing about the use of antioxidants as a preventive treatment of neurodegenerative diseases. Such therapies may work in the preventive phase or in curati...

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Ascorbic Acid and the Brain: Rationale for the Use against Cognitive Decline

Cited by 82 publications

References 159 publications

Magnetic resonance spectroscopy reveals abnormalities of glucose metabolism in the Alzheimer's brain

Magnetic resonance spectroscopy reveals abnormalities of glucose metabolism in the Alzheimer's brain

Alzheimer’s Disease: Dawn of a New Era?

Antioxidants as a preventive therapeutic option for age related neurodegenerative diseases

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