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Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Nat+Commun 2021 ; 12 (1): 4144 Nephropedia Template TP
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Twelve-month specific IgG response to SARS-CoV-2 receptor-binding domain among COVID-19 convalescent plasma donors in Wuhan #MMPMID34230476
Li C; Yu D; Wu X; Liang H; Zhou Z; Xie Y; Li T; Wu J; Lu F; Feng L; Mao M; Lin L; Guo H; Yue S; Wang F; Peng Y; Hu Y; Wang Z; Yu J; Zhang Y; Lu J; Ning H; Yang H; Fu D; He Y; Zhou D; Du T; Duan K; Dong D; Deng K; Zou X; Zhang Y; Zhou R; Gao Y; Zhang X; Yang X
Nat Commun 2021[Jul]; 12 (1): 4144 PMID34230476show ga
To investigate the duration of humoral immune response in convalescent coronavirus disease 2019 (COVID-19) patients, we conduct a 12-month longitudinal study through collecting a total of 1,782 plasma samples from 869 convalescent plasma donors in Wuhan, China and test specific antibody responses. The results show that positive rate of IgG antibody against receptor-binding domain of spike protein (RBD-IgG) to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in the COVID-19 convalescent plasma donors exceeded 70% for 12 months post diagnosis. The level of RBD-IgG decreases with time, with the titer stabilizing at 64.3% of the initial level by the 9th month. Moreover, male plasma donors produce more RBD-IgG than female, and age of the patients positively correlates with the RBD-IgG titer. A strong positive correlation between RBD-IgG and neutralizing antibody titers is also identified. These results facilitate our understanding of SARS-CoV-2-induced immune memory to promote vaccine and therapy development.