Scientists from the US have discovered the exact mechanism of catching a cold in the cold

0

Scientists from two American universities have discovered a previously unknown mechanism of the nasal immune response. This explains the factor of a greater likelihood of getting sick with SARS in the cold.

According to experts, it was first assumed that people were more likely to get the flu during cold weather because they spent more time indoors, where viruses spread more easily through airborne droplets.

Recent scientific work by representatives of Northeastern and Massachusetts universities has shown that biological episodes are actually the causes of seasonal fluctuations in viral illnesses.

The experts found out during the experiment that samples of nasal tissue and cells from people who had undergone medical intervention and completely healthy respondents reacted to a pair of viruses that provoke a cold. The experts noticed that all pathogens activate exosomes from the nose, but they use a signal that is different from the one used to combat microbes.

The scientists also discovered a mechanism responsible for the antiviral action: elements that are not based in cells worked as bait when penetrating, carrying particles with them to which fragments of the disease bound instead of nasal cells.

Then the experts decided to check how cold affects this procedure, so they analyzed the condition of healthy volunteers who were at room temperature. After that, they were transferred to a room where it was 4.4 degrees Celsius.

It turned out that the temperature inside the nose decreased by five degrees. In the new phase of the experiment, scientists studied nasal tissues, and as a result, the immune response slowed down. The number of corresponding exosomes decreased by 42%, and they also found disturbances in the functioning of antiviral proteins.