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Egg yolk immunoglobulin Y as a promising tool to detect immune complexes in neurocysticercosis serum samples

2020; Oxford University Press; Volume: 114; Issue: 8 Linguagem: Inglês

10.1093/trstmh/traa028

1878-3503

Gabriela B. da Silva, Lucas S da Faria, Camila de Almeida Lopes, Daniela Nunes, Vanessa da Silva Ribeiro, José Eduardo Neto de Sousa, Guilherme Carrara Moreira Paiva, M. R. F. Gonçalves-Pires, Isabela Pacheco Borges, Malú Mateus Santos Obata, Veridiana de Melo Rodrigues, Álvaro Ferreira Júnior, Julia Maria Costa‐Cruz,

Food Allergy and Anaphylaxis Research

Neurocysticercosis (NCC) is a neglected tropical disease and its diagnosis is still a challenge due to non-specific manifestations. Neuroimaging techniques are used in the diagnosis of NCC, however, due to the high cost of these methods and the advantages presented in the use of immunological tests, such as ease of performance and satisfactory results, immunoassays are commonly used to detect antibodies against Taenia sp. antigens. The aim of the present study was to produce, characterize and apply specific polyclonal immunoglobulin Y (IgY) anti-Taenia crassiceps extracted from egg yolk of hens immunized with T. crassiceps metacestodes.Indirect enzyme-linked immunosorbent assay (ELISA), avidity ELISA, immunoblotting and indirect immunofluorescence tests were performed for characterization of IgY antibodies. Diagnostic performance was verified by ELISA for immune complex detection testing 90 serum samples.Values of sensitivity, specificity, positive and negative likelihood ratios (LR+/LR-) and area under the curve (AUC) were calculated and presented the following results: sensitivity 83.3%, specificity 96.7%, AUC 0.966, LR+ 25.0 and LR- 0.17.Results of this pioneering and innovative study demonstrate that anti-T. crassiceps IgY antibodies present potential applicability and can be used as an efficient tool in human NCC serodiagnosis.