The hormone melatonin produced in the lungs acts as a barrier against COVID-19. These are the conclusions reached by scientists from the University of São Paulo in Brazil.
Thus, melatonin prevents the expression of genes encoding proteins at the entry points for the virus - the cells of the nasal and pulmonary alveoli - and the epithelium. The hormone prevents infection of these tissues and suppresses the immune response, as a result of which the virus remains in the respiratory tract for several days and then leaves, writes Melatonin Research.
A similar mechanism of action for pulmonary melatonin should also apply to other respiratory viruses, including influenza, the study said.
Over the past day, Russian doctors have recorded 19,138 new cases of coronavirus in 85 regions. The total number of cases in Russia since the beginning of the pandemic has reached 3 793 810.
According to the headquarters, the number of active cases is 492,901.
The number of those who recovered over the past 24 hours increased by 26,775 people - up to 3,229,258. 575 people became victims of COVID-19, a total of 71,651 deaths were registered.
Earlier NEWS.ru wrote that the vaccination schedule against COVID-19 is being adjusted based on the forms of release and the appearance of new vaccines, there are 3,098 vaccination points in Russia, said Deputy Prime Minister Tatyana Golikova.