Development and Validation of ELISAs for Detection of Intrathecal Antibodies Against Rabies Virus Glycoprotein in Human CSF for Ante-Mortem Diagnosis
Accurate detection of intrathecal antibodies against rabies virus (RABV) is critical for ante-mortem diagnosis and disease monitoring, particularly when virus-neutralizing activity is low or delayed. In this study, indirect ELISAs were developed to detect IgM, IgG, and polyvalent (IgA/IgM/IgG) antibodies against RABV glycoprotein (RABV G) in cerebrospinal fluid. The RABV G antigen, purified by Lens culinaris lectin affinity chromatography, retained physicochemical and immunoreactive properties, as confirmed by SDS-PAGE, monoclonal antibody recognition and lectin-binding assays.
