Ascorbic acid may act against protein deposits that cause Alzheimer’s – 09/20/2022

Ascorbic acid is being studied for its potential potential to stop the construct-up of proteins round neurons (nerve system cells), stopping the formation of fibers considered a trademark of Alzheimer’s illness. Conducted in vitro experiments and computational analyses IFSC (Sao Carlos Institute of Physics) tried to clarify it by demonstrating a bodily and chemical methodology at USP.

“Alzheimer’s is a neurodegenerative illness that primarily impacts folks over the age of 65. The predominant signs are reminiscence loss and cognitive impairment”, researcher Isabella Sampaio and professor Valtensir Zuccoloto, coordinators GNano (IFSC’s Nanomedicine and Nanotoxicology Group), is accountable for the analysis, the outcomes of that are offered in an article printed within the scientific journal Biochemistry.

“Despite the growing incidence in Brazil, as a result of growing older of the inhabitants, there are nonetheless no remedies to stop or stop the development of the illness”, he says.

According to the researchers, “Some research have proven that the brains of sufferers with Alzheimer’s have decreased ranges of ascorbic acid, often known as vitamin C, a molecule with antioxidant properties that performs an necessary position in our immune system.”

“The purpose of our analysis was to guage the impact of ascorbic acid on the aggregation of beta-amyloid peptides by in vitro experiments and computational strategies equivalent to molecular dynamics, in collaboration with Professor Alessandro Nascimento from the IFSC.”

The work is preliminary, and it doesn’t suggest that taking the substance will stop the illness or include it in those that have already got it – an excessive amount of will be dangerous. To learn how the information generated at this stage can be utilized, a sequence of analysis must be carried out, together with checks on cells, then animals and at last people.

Decrease in fibers

For in vitro experiments, samples containing peptides had been incubated beneath circumstances that favored their aggregation. “In a few of these samples, ascorbic acid was added. At sure incubation occasions, elements of those samples had been eliminated and analyzed by totally different strategies to evaluate the extent of aggregation of peptides. We emphasize that research haven’t but been carried out on sufferers” , Isabella and Zuccoloto describe

“Experiments confirmed that in samples incubated with ascorbic acid, there was a big discount in fiber formation, indicating that these antioxidant molecules are capable of stop the aggregation of peptides.”

“Since ascorbic acid acts as an aggregation inhibitor, experiments had been performed to analyze how this happens,” the researchers reported. “Using molecular biophysics and pc modeling strategies, we discovered that ascorbic acid binds to beta-amyloid on the similar binding websites in peptides, stopping mixture formation. In addition, it is ready to bind and destabilize already shaped fibers.”

Isabella and Zuccoloto level out that there’s a worldwide concern to develop efficient remedies for Alzheimer’s illness. Further steps are nonetheless wanted to guage whether or not ascorbic acid supplementation will stop cognitive impairment in in vivo checks (in animals and later in people) and in folks identified with the illness, however the outcomes of this analysis open the door for continuation. of examine.


Professor Vitor Tumas within the Department of Neurosciences and Behavioral Sciences right here FMRP (Faculdade de Medicina de Ribeirão Preto) at USP, Jornal da USP states that a number of research have prompt that aggregation of peptides may be the principle pathological course of related to Alzheimer’s illness. “Research, on an experimental foundation, gives proof that ascorbic acid can stop aggregation and fibrillation,” he says.

“The level is that this work was completed in vitro, which concerned molecular evaluation, and it’s doable that what was demonstrated within the laboratory doesn’t translate into in vivo research with animal fashions, and to this point no researcher has been capable of show in people that the peptide in Intervention prevents the institution and development of the illness”, they add, highlighting one thing the authors of the article have already highlighted. None of this diminishes the scientific worth of the work completed, but it surely does function a warning against self-remedy.

“There continues to be no remedy for Alzheimer’s illness, and the article reveals that the usage of ascorbic acid to stop the formation of protein clusters may be a approach to cease the illness, nonetheless, this impact has been proven physicochemically, with ascorbic acid and peptides, not in cells and organs. , whose interactions resulting in Alzheimer’s should not recognized”, factors out Professor Marilia de Arruda Cardoso Smith from UNIFESP (Federal University of São Paulo), who researches the genetics of growing older and associated illnesses.

“Now it’s essential to confirm whether or not this motion happens in vivo, a job that should be completed progressively, first in animal fashions, then in human cells and, if no unintended effects are detected, in people with the illness.”

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