A study reveals corona injury to the brain and its effect on the nerves
The British Express newspaper published a report stating that Corona does not affect the respiratory system only, but extends to attack the nerve cells in the brain that cause loss of smell and taste, severe headache, fatigue and nausea.
The newspaper pointed out that a new study published in Nature Neuroscience provides a reasonable explanation for these distinctive symptoms, explaining that the research indicates that corona not only invades the respiratory system, but also affects the central nervous system (CNS), which leads to neurological symptoms such as loss Sense of smell, taste, headache, fatigue, and nausea.
The study found that this occurs by "Corona" infecting the human brain through nasal mucus. According to "Express", this discovery is the first of its kind to show how the emerging virus can enter the nerve cells in the brain through the mucosal pathway.
To confirm their hypothesis, scientists in Germany conducted an autopsy on the bodies of 33 people who had died from "Corona", and they studied the mucus in the back of the nose - above the mouth where the throat meets the nasal cavity - in addition to samples of brain tissue.
The genetic material of the emerging virus was present in large quantities in the mucus of the nasal cavity, but the virus proteins that facilitate the entry of the virus into cells in the brain were also found.
"Once the virus enters the olfactory mucosa, it appears to use neuroanatomical connections, such as the olfactory nerve, to reach the brain," said Dr. Frank Hebner, co-author of the study from Charité University - University of Berlin.
To support their claim, the scientists captured the first electron microscope image of intact emerging virus particles inside the mucus. However, the study did not specify how the virus travels to the brain from this point, according to "Express".
For her part, Dr. Helena Radbruch, one of the academics who worked on the study, said: "Our data indicate that the virus is transmitted from one nerve cell to another in order to reach the brain."
However, it is likely that the virus is also transmitted through the blood vessels, as evidence of the presence of the virus in the walls of blood vessels in the brain was also found, and the study revealed the presence of immune cells in the cerebral fluid that were activated after infection.
Professor Hebner said, "The presence of the virus in the neurons of the olfactory mucosa provides a good explanation for the neurological symptoms that appear in patients, such as loss of smell or taste. We also found it in areas of the brain that control vital functions such as breathing."