Title
Diagnostic accuracy of somatic and excretory-secretory antigens from Strongyloides venezuelensis infective larvae for the immunodiagnosis of human strongyloidiasis
Date Issued
01 January 2021
Access level
metadata only access
Resource Type
journal article
Author(s)
Universidade de São Paulo
Publisher(s)
Cambridge University Press
Abstract
To evaluate the diagnostic accuracy of three types of antigenic preparations from Strongyloides venezuelensis infective larvae for detection of serum IgG anti-Strongyloides antibodies by enzyme-linked immunosorbent assay (ELISA). Soluble (SSF) and membrane (MSF) somatic fractions and excretorysecretory (E/S) products from S. venezuelensis infective larvae were evaluated against 71 sera from individuals with strongyloidiasis, 105 sera from healthy individuals, and 84 sera from individuals with other helminth infections. Using an ELISA cut-off for 100% sensitivity, E/S products were 97.88% specific followed by MSF (93.12%) and then by SSF (85.2%). The occurrence of cross-reactivity with other helminths was 4.76% (4/84) with E/S products, 8.33% (7/84) with MSF, and 17.86% (15/84) with SSF. For a cut-off for 100% specificity, E/S products showed a sensitivity of 88.73% whereas MSF and SSF showed sensitivities of 59.15% and 53.52%, respectively. In conclusion, E/S products were the best antigenic option for the serodiagnosis of human strongyloidiasis.
Language
English
OCDE Knowledge area
Inmunología
Tecnología médica de laboratorio (análisis de muestras, tecnologías para el diagnóstico)
Parasitología
Subjects
Scopus EID
2-s2.0-85109506604
PubMed ID
Source
Parasitology
ISSN of the container
00311820
Sponsor(s)
Financial support. WHR is receiving support from Edital MCT/ CNPq-Brazil, Process N° 142056/2018-9. RCBG is receiving support from Fundação de Amparo à Pesquisa do Estado de São Paulo, Brazil (FAPESP Grant N° 2013/04236-9).
Sources of information:
Directorio de Producción Científica
Scopus