Posted on 3 August 2020
The best way to fight Covid may be to fight ageing. As COVID-19 primarily kills the elderly, treatments aimed at making the ageing immune system behave more like its younger self may be one of the most effective ways to tackle the disease. The means to put this theory to the test exist, and are worthy of exploration, particularly when it comes to boosting older people’s response to vaccination.
are less effective in elderly people. However, a new class of drugs called rapalogues could be used to rejuvenate the ageing immune system just prior to , thereby boosting its effectiveness., which rely on inducing a robust response from the recipient’s immune system,
Rapalogues inhibit a molecule called mTOR, which is part of a reducing infection rates in the elderly and improving flu vaccine responses by 20%. Furthermore, studies from Wuhan and the United States suggest that taking , a drug that also targets mTOR, were less likely to die from Covid than not taking (even when the severity of their was the same).pathway that plays an important role in the ageing process. Inhibiting mTOR not only extends lifespan in all animals that have been studied, but also appears to have a rejuvenating effect on the ageing immune system,
Of course, until we have a Covid vaccine, it is impossible to know whether such drugs will boost. However, it is an enticing possibility that should be investigated in vaccine trials, as it may help solve one of the big challenges of developing a Covid vaccine: that the age group most in need of protection against the is also the least responsive to vaccination.
TORC1 inhibition enhances immune function and reduces infections in the elderly: DOI: 10.1126/scitranslmed.aaq1564
mTOR inhibition improves immune function in the elderly: DOI: 10.1126/scitranslmed.3009892
Metformin Treatment Was Associated with Decreased Mortality in COVID-19 Patients with Diabetes in a Retrospective Analysis: DOI: 10.4269/ajtmh.20-0375
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