Diagnosis of neuroparacoccidioidomycosis by detection of circulating antigen and antibody in cerebrospinal fluid

Diagnosis of neuroparacoccidioidomycosis by detection of circulating antigen and antibody in cerebrospinal fluid

Autor Silva, Silvia Helena Marques da Autor UNIFESP Google Scholar
Colombo, Arnaldo Lopes Autor UNIFESP Google Scholar
Blotta, Maria Heloisa Souza Lima Google Scholar
Queiroz-Telles, Flavio Google Scholar
Lopes, Jose Daniel Autor UNIFESP Google Scholar
Camargo, Zoilo Pires de Autor UNIFESP Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Universidade Estadual de Campinas (UNICAMP)
Univ Fed Parana
Resumo Neuroparacoccidioidomycosis (neuroPCM) is the central nervous system infection by the fungus Paracoccidioides brasiliensis. Its diagnosis is a difficult task that depends on neuroimaging techniques such as computed tomography and magnetic resonance imaging. However, the detection of circulating P. brasiliensis antigens in body fluids by inhibition enzyme-linked immunosorbent assay (inh-ELISA) has provided encouraging results. in this study, 14 cerebrospinal fluid (CSF) and 11 serum samples of patients with neuroPCM were analyzed by inh-ELISA for detection of circulating glycoprotein antigens of 43 kDa (gp43) and 70 kDa (gp70). Circulating gp43 and gp70 antigens were detected in all CSF samples from patients with neuroPCM at mean concentrations of 19.3 and 6.8 mu g/ml, respectively. in addition, both gp43 and gp70 antigens were detected in 10 of 11 serum samples analyzed at mean concentrations of 4.6 and 4.0 mu g/ml, respectively. By immunodiffusion test, CSF samples were determined to be negative in 13 of 14 samples. the detection of anti-gp43 and anti-gp70 antibodies by conventional ELISA showed positive results for all CSF samples, with titers ranging from 1:50 to 1:51,200. Therefore, the high sensitivity of the inh-ELISA technique in detecting gp43 and gp70 antigens in the CSF of neuroPCM patients strongly indicates that this assay can be considered as a powerful diagnostic tool. in addition, the finding of anti-gp43 and anti-gp70 antibodies in CSF samples by conventional ELISA also seems to be a promising diagnostic method for this special modality of PCM.
Idioma Inglês
Data de publicação 2005-09-01
Publicado em Journal of Clinical Microbiology. Washington: Amer Soc Microbiology, v. 43, n. 9, p. 4680-4683, 2005.
ISSN 0095-1137 (Sherpa/Romeo, fator de impacto)
Publicador Amer Soc Microbiology
Extensão 4680-4683
Fonte http://dx.doi.org/10.1128/JCM.43.9.4680-4683.2005
Direito de acesso Acesso aberto Open Access
Tipo Artigo
Web of Science WOS:000232020400057
Endereço permanente http://repositorio.unifesp.br/handle/11600/28435

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