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Genetic Similarity Between COVID-19 and Alzheimers Disease

Following it, associated variants on the identical gene additionally improve the opportunity of extreme COVID-19 outcomes.

This could assist formulate new drug targets towards each the illness and its development. The findings might also maintain possible advantages towards dementia and different comparable infections.

OAS1 gene and Risk of AD & COVID-19

“While Alzheimer’s is primarily characterised by harmful build-up of amyloid protein and tangles in the brain, there is also extensive inflammation in the brain that highlights the importance of the immune system in Alzheimer’s. We have found that some of the same immune system changes can occur in both Alzheimer’s disease and COVID-19. In patients with severe COVID-19 infection, there can also be inflammatory changes in the brain. Here we have identified a gene that can contribute to an exaggerated immune response to increase risks of both Alzheimer’s and COVID-19”, says Lead writer Dr. Dervis Salih (UCL Queen Square Institute of Neurology and UK Dementia Research Institute at UCL).

The gene OAS1 is discovered to be expressed in immune cells of the mind – microglia. The research sequenced genetic knowledge from 2,547 individuals, amongst which, half of them had Alzheimer’s illness.

The research crew discovered that the baseline danger of Alzheimer’s elevated by 11-22% in individuals with a selected variation, known as rs1131454, of the OAS1 gene. Moreover these OAS1 variants had been additionally discovered to extend the baseline danger of needing intensive look after COVID-19 by as a lot as 20%.

As the OAS1 exercise adjustments with age, additional genetic analysis is required to know why older persons are extra susceptible to Alzheimer’s, COVID-19, and different associated ailments.

“If we could develop a simple way of testing for these genetic variants when someone tests positive for COVID-19, then it might be possible to identify who is at greater risk of needing critical care, but there is plenty more work to be done to get us there”, says, Dr. Salih.

Source: Medindia

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