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    Home > Biochemistry News > Biotechnology News > Infection with the new coronavirus can change the size and hardness of blood cells or help explain why disease symptoms last longer

    Infection with the new coronavirus can change the size and hardness of blood cells or help explain why disease symptoms last longer

    • Last Update: 2021-09-06
    • Source: Internet
    • Author: User
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    Science and Technology Daily News (Reporter Liu Xia) According to a recent report by the physicist organization network, German scientists discovered for the first time that the new coronavirus can significantly change the size and hardness of red blood cells and white blood cells in the human body using a real-time cell deformation measuring instrument.
    The duration may be as long as In a few months, this discovery may help explain why some symptoms persist for a long time in patients with new coronary pneumonia

    .

    Some patients are still suffering from symptoms such as shortness of breath, fatigue and headache after being infected with the new coronavirus for 6 months or more.
    Scientists have not been able to find out the cause

    .
    Moreover, studies have also found that after a patient's infection, blood circulation is impaired, which may cause vascular occlusion and affect the delivery of oxygen in the blood vessels.
    These phenomena are all related to blood cells

    .

    In order to clarify this problem, scientists from the Max Planck Institute of Light Science and the German Immunotherapy Center measured 400 from 17 new coronary pneumonia patients, 14 new coronary pneumonia patients and 24 healthy people (as a control group).
    Thousands of blood cells

    .
    They pointed out in a paper published in the latest "Journal of Biophysics": "During the infection and even after the infection, the patient's blood cells can be detected to have clear and lasting changes

    .
    "

    To analyze blood cells, the researchers used a self-developed real-time cell deformation measuring instrument (RT-DC)
    .
    They first let blood cells pass through a narrow passage at high speed, during which the white blood cells and red blood cells are stretched

    .
    A high-speed camera will record the condition of each cell

    .
    Then, they use custom software to determine the type of cell, as well as the size and degree of deformation of the cell

    .
    The system can analyze up to 1,000 blood cells per second

    .

    The results show that the size and deformability of red blood cells in patients with new coronary pneumonia are very different from those of healthy people, indicating that these cells are damaged, which helps explain why patients with new coronary pneumonia are at increased risk of blockage and embolism in the pulmonary blood vessels
    .
    The study also found that the oxygen supply capacity of red blood cells in patients with new coronary pneumonia is also impaired in the infection, and the patient's lymphocytes (a type of white blood cell responsible for acquired immune defense) are also significantly softer

    .
    In addition, 7 months after infection, the patient's neutrophils (another type of white blood cell involved in the innate immune response) still have significant changes

    .

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