A study by French, Spanish and German scientists, which appeared in the journal Nature Neuroscience, found that
Scientists have discovered that the blood after thisends up in areas of the brain where it shouldn’t go. At the second stage, when endothelial cells completely die, “ghost vessels” are formed through which blood no longer flows. Small areas of the brain are deprived of oxygen and glucose.
Thereafter, patients are at increased risk of microhemorrhages, which indicate the risk of decreased blood flow, which can have serious consequences and lead to death.
The brains of # COVID-19 patients have damagedblood vessels (more so-called string vessels representing remnants of lost capillaries); SARS-CoV-2 infects brain endothelial cells and leads to microvascular pathology via RIPK signaling https://t.co/vR0mgZ9EbS
— Nature Neuroscience (@NatureNeuro) October 21, 2021
The researchers noted that these injuries wererare and they have not yet been able to confirm a single death due to the effects of COVID-19 on the brain. “We have seen that in hamsters that develop very mild forms of COVID-19, this phenomenon is reversible, so we can hope that it can be reversible in humans as well,” they added.
Scientists also noted that this phenomenon they couldobserve only in patients who develop a severe form of the disease. However, in people who had a milder form of the disease, it was not possible to find any consequences for the brain.
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