1. Studying the Humoral Response against SARS-CoV-2 in Cuban COVID-19 Recovered Patients
- Author
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Ivette Orosa Vázquez, Marianniz Díaz, Yaima Zúñiga Rosales, Klayris Amada, Janoi Chang, Ernesto Relova Hernández, Yaima Tundidor, Hilda Roblejo Balbuena, Giselle Monzón, Bárbara Torres Rives, Enrique Noa Romero, Danay Carrillo Valdés, Irinia Valdivia Álvarez, Aurora Delahanty Fernández, Claudia Díaz, Joaquín Solozabal, Mileidys Gil, Belinda Sánchez, Gertrudis Rojas, Beatriz Marcheco, and Tania Carmenate
- Subjects
Immunologic diseases. Allergy ,RC581-607 - Abstract
Understanding the immune response generated by SARS-CoV-2 is critical for assessing efficient therapeutic protocols and gaining insights into the durability of protective immunity. The current work was aimed at studying the specific humoral responses against SARS-CoV-2 in Cuban COVID-19 convalescents. We developed suitable tools and methods based on ELISA methodology, for supporting this evaluation. Here, we describe the development of an ELISA for the quantification of anti-RBD IgG titers in a large number of samples and a similar test in the presence of NH4SCN as chaotropic agent for estimating the RBD specific antibody avidity. Additionally, a simple and rapid ELISA based on antibody-mediated blockage of the binding RBD-ACE2 was implemented for detecting, as a surrogate of conventional test, the levels of anti-RBD inhibitory antibodies in convalescent sera. In a cohort of 273 unvaccinated convalescents, we identified higher anti-RBD IgG titer (1 : 1,330, p
- Published
- 2024
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