Author:
Shu Lei,Niu Changming,Li Ruyou,Huang Tingrong,Wang Yan,Huang Mao,Ji Ningfei,Zheng You,Chen Xiaolin,Shi Lei,Wu Mingjing,Deng Kaili,Wei Jing,Wang Xueli,Cao Yang,Yan Jiaxin,Feng Ganzhu
Abstract
Abstract
Background
COVID-19 is a highly infectious respiratory disease. No therapeutics have yet been proven effective for treating severe COVID-19.
Objectives
To determine whether human umbilical cord mesenchymal stem cell infusion may be effective and safe for the treatment of severe COVID-19.
Methods
Patients with severe COVID-19 were randomly divided into 2 groups: the standard treatment group and the standard treatment plus hUC-MSC infusion group. The incidence of progression from severe to critical illness, 28-day mortality, clinical symptom improvement, time to clinical symptom improvement, hematologic indicators including C-reactive protein, lymphocyte number, and interleukin 6, and imaging changes were observed and compared between the two groups.
Measurements and main results
The incidence of progression from severe to critical illness and the 28-day mortality rate were 0 in the hUC-MSC treatment group, while 4 patients in the control group deteriorated to critical condition and received invasive ventilation; 3 of them died, and the 28-day mortality rate was 10.34%. In the hUC-MSC treatment group, the time to clinical improvement was shorter than that in the control group. Clinical symptoms of weakness and fatigue, shortness of breath, and low oxygen saturation obviously improved beginning on the third day of stem cell infusion and reached a significant difference on day 7. CRP and IL-6 levels were significantly lower from day 3 of infusion, the time for the lymphocyte count to return to the normal range was significantly faster, and lung inflammation absorption was significantly shorter on CT imaging in the hUC-MSC group than in the control group.
Conclusions
Intravenous transplantation of hUC-MSCs is a safe and effective method that can be considered a salvage and priority treatment option for severe COVID-19.
Trial registration
Chinese Clinical Trial Registration; ChiCTR2000031494; Registered on 2 April 2020; http://www.medresman.org
Funder
National Natural Science Foundation of China
Key Research and Development Project of Jiangsu Province
Publisher
Springer Science and Business Media LLC
Subject
Cell Biology,Biochemistry, Genetics and Molecular Biology (miscellaneous),Molecular Medicine,Medicine (miscellaneous)
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