Abstract
Melatonin is a hormone that acts facilitating the appearance of physiological sleep It has also a very evident antinflammatory and antioxidant capacities that result in beneficial actions on the aging processes in the cardiovascular system and in the lungs where our group has detected a protective action against oxidative stress , inflammation and apoptosis . Although melatonin is not viricidal by itself in some models of viral infections it has demonstrated its ability to reduce viral load and also inflammation and oxidation, reducing the severity of the disease. In COVID 19 melatonin has been shown to be able to interfere with the infectious process that takes place through ACE2 and EGF receptors being able to block these interactions thus reducing viremia .It is able to block the activation of the NLRP3 inflammasome thus dramatically reducing the massive secretion of cytokines and markedly reducing hyperinflammation and apoptosis leading to a better evolution of the disease .For all these reasons melatonin could play an important role in the treatment of COVID 19.
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