Effective treatment of severe COVID-19 patients with tocilizumab

Xiaoling Xu1, Mingfeng Han2, Tiantian Li1, Sun Wei2, Dongsheng Wang1, Binqing Fu3,4, Yonggang Zhou3,4, Xiaohu Zheng3,4, Yun Yang5, Xiuyong Li6, Xiao‐Hua Zhang2, Aijun Pan5, Haiming Wei3,4
1Respiratory and Critical Care Medicine, The First Affiliated Hospital of University of Science and Technology of China (Anhui Provincial Hospital), Hefei, Anhui 230000, People’s Republic of China;
2Respiratory and Critical Care Medicine, Anhui Fuyang Second People’s Hospital, Fuyang, Anhui 230000, People’s Republic of China;
3Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230000, People’s Republic of China;
4Institute of Immunology and the Chinese Academy of Sciences (CAS) Key Laboratory of Innate Immunity and Chronic Disease, School of Life Science and Medical Center, University of Science and Technology of China, Hefei, Anhui 230000, People’s Republic of China;
5Intensive Care Unit, The First Affiliated Hospital of University of Science and Technology of China (Anhui Provincial Hospital), Hefei, Anhui 230000, People’s Republic of China;
6Hemodialysis Center, Anhui Fuyang Second People’s Hospital, Fuyang, Anhui 236000, People’s Republic of China

Tóm tắt

Significance In patients with coronavirus disease 2019, a large number of T lymphocytes and mononuclear macrophages are activated, producing cytokines such as interleukin-6 (IL-6), which bind to the IL-6 receptor on the target cells, causing the cytokine storm and severe inflammatory responses in lungs and other tissues and organs. Tocilizumab, as a recombinant humanized anti-human IL-6 receptor monoclonal antibody, can bind to the IL-6 receptor with high affinity, thus preventing IL-6 itself from binding to its receptor, rendering it incapable of immune damage to target cells, and alleviating the inflammatory responses.

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