Meanwhile the outbreak of the Covid-19 since December, 2019 in China, it has killed more than a hundred thousand of people of all ages and sex across the globe in a short span of time. On the bases of this study the n...Meanwhile the outbreak of the Covid-19 since December, 2019 in China, it has killed more than a hundred thousand of people of all ages and sex across the globe in a short span of time. On the bases of this study the nearest family member of the virus and its receptor binding domain of S protein including its model structure and function of its active sites were naked through Multiple Sequence Alignment, modelling and molecular docking software accordingly its repository genome databases. The virus was genetically associated and molecular evolutionary related with (<em>RaTG</em>13) and it scores 96.12% homology with 99% query coverage followed by <em>bat-SL-CoVZC</em>45 and<em> bat-SL-CoVZXC</em>21 notch 89.12% and 88.65% respectively. However, SARS and MERS corona type virus those outbreak earlier respectively less likely family members of 2019-nCoV. Though the virus has a close genetic association with those previous SARS coronaviruses, and certainly the spike protein used as a binding receptor to fight against human receptor protein of ACE 2, but on the basis of FRODOC and HDOCK server analysis multi favorable active sites of S protein was discovered such GLN493 shown as a finest key in both model and possessed a unique traits on it resulting unexpected rate of transmission and number of people died while compared to the previous one. TYR500, ASN501, GLN498 and others residues preferably contemplate site also. In particular, the diversity of the virus in the world may be due to the genome structure of the virus and S gene changed over the time, across the world against to host of human genetic diversity, which may be more robust, and may be a new and unique feature. This is because it is characterized close to contact with distance divergence between wild type novel coronavirus which was risen from China against to the genomes from Lebanon, India, Italy, and USA and so on. Thus, the World Health Organization and its researchers should focus on immunologic research and effective drug and vaccine development that will help to address the epidemiology of the virus, which can provide a long-term solution.展开更多
Background:Several vaccines have been approved against COVID-19,and 5 have been used in Indonesia.Due to the decrease in antibody levels 3 to 6 months after the second dose of CoronaVac,healthcare workers received the...Background:Several vaccines have been approved against COVID-19,and 5 have been used in Indonesia.Due to the decrease in antibody levels 3 to 6 months after the second dose of CoronaVac,healthcare workers received the third booster of mRNA vaccine(mRNA-1273)to increase the antibody level.This study aimed to evaluate the risk factors of anti-S-RBD IgG levels differences in healthcare workers.Methods:This study is a retrospective cohort study of 576 healthcare workers without previous SARS-CoV-2 infection who received 2 doses of CoronaVac and the third dose of mRNA-12736 months after the second dose.Blood samples were obtained 2nd,6th,12th,and 24th weeks after the second dose of CoronaVac vaccine administration,with mRNA-1273 booster on week 20.Quantitative measurements of IgG antibodies were performed with Elecsys Anti-SARS-CoV-2 S immunoassay.We identify the baseline factors predicting post-vaccination antibody titers using univariate and multivariate linear regression analysis.Results:This study comprised 576 participants aged 32 years old,72.05%female,and 45.84%from high-risk occupation subgroups.The median antibodies titer level on the 2nd,6th,12th,and 24th weeks after the second vaccine dose administration were 40.99 u/mL,42.01 u/mL,54.78 u/mL,and 23,225 u/mL.Antibody levels trended highest in female and younger age group(20-29 years old).Conclusions:The third dose of vaccine increased the quantitative SARS-CoV-2 spike IgG antibody titers and eliminated differences in antibodies titer by gender.展开更多
文摘Meanwhile the outbreak of the Covid-19 since December, 2019 in China, it has killed more than a hundred thousand of people of all ages and sex across the globe in a short span of time. On the bases of this study the nearest family member of the virus and its receptor binding domain of S protein including its model structure and function of its active sites were naked through Multiple Sequence Alignment, modelling and molecular docking software accordingly its repository genome databases. The virus was genetically associated and molecular evolutionary related with (<em>RaTG</em>13) and it scores 96.12% homology with 99% query coverage followed by <em>bat-SL-CoVZC</em>45 and<em> bat-SL-CoVZXC</em>21 notch 89.12% and 88.65% respectively. However, SARS and MERS corona type virus those outbreak earlier respectively less likely family members of 2019-nCoV. Though the virus has a close genetic association with those previous SARS coronaviruses, and certainly the spike protein used as a binding receptor to fight against human receptor protein of ACE 2, but on the basis of FRODOC and HDOCK server analysis multi favorable active sites of S protein was discovered such GLN493 shown as a finest key in both model and possessed a unique traits on it resulting unexpected rate of transmission and number of people died while compared to the previous one. TYR500, ASN501, GLN498 and others residues preferably contemplate site also. In particular, the diversity of the virus in the world may be due to the genome structure of the virus and S gene changed over the time, across the world against to host of human genetic diversity, which may be more robust, and may be a new and unique feature. This is because it is characterized close to contact with distance divergence between wild type novel coronavirus which was risen from China against to the genomes from Lebanon, India, Italy, and USA and so on. Thus, the World Health Organization and its researchers should focus on immunologic research and effective drug and vaccine development that will help to address the epidemiology of the virus, which can provide a long-term solution.
基金approved by Mochtar Riady Institute for Nanotechnology(MRIN),Tangerang,Banten Indonesia(Protocol No.2108017-03).
文摘Background:Several vaccines have been approved against COVID-19,and 5 have been used in Indonesia.Due to the decrease in antibody levels 3 to 6 months after the second dose of CoronaVac,healthcare workers received the third booster of mRNA vaccine(mRNA-1273)to increase the antibody level.This study aimed to evaluate the risk factors of anti-S-RBD IgG levels differences in healthcare workers.Methods:This study is a retrospective cohort study of 576 healthcare workers without previous SARS-CoV-2 infection who received 2 doses of CoronaVac and the third dose of mRNA-12736 months after the second dose.Blood samples were obtained 2nd,6th,12th,and 24th weeks after the second dose of CoronaVac vaccine administration,with mRNA-1273 booster on week 20.Quantitative measurements of IgG antibodies were performed with Elecsys Anti-SARS-CoV-2 S immunoassay.We identify the baseline factors predicting post-vaccination antibody titers using univariate and multivariate linear regression analysis.Results:This study comprised 576 participants aged 32 years old,72.05%female,and 45.84%from high-risk occupation subgroups.The median antibodies titer level on the 2nd,6th,12th,and 24th weeks after the second vaccine dose administration were 40.99 u/mL,42.01 u/mL,54.78 u/mL,and 23,225 u/mL.Antibody levels trended highest in female and younger age group(20-29 years old).Conclusions:The third dose of vaccine increased the quantitative SARS-CoV-2 spike IgG antibody titers and eliminated differences in antibodies titer by gender.
