Serology of Paracoccidioidomycosis Due to Paracoccidioides lutzii

Autor(es)

Gegembauer, Gregory ^[1] ; Araujo, Leticia Mendes ^[1] ; Pereira, Edy Firmina ^[2] ; Rodrigues, Anderson Messias ^[1] ; Miranda Paniago, Anamaria Mello ^[2] ; Hahn, Rosane Christine ^[3] ; de Camargo, Zoilo Pires ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Paulo UNIFESP, Dept Microbiol Imunol & Parasitol, Disciplina Biol Celular, Sao Paulo - Brazil

^[2] Univ Fed Mato Grosso do Sul UFMS, Fac Med FAMED, Campo Grande, MS - Brazil

^[3] Univ Fed Mato Grosso UFMT, Nucleo Doencas Infecciosas & Trop, Cuiaba, Mato Grosso - Brazil

• Tipo de documento: Artigo Científico
• Fonte: PLoS Neglected Tropical Diseases; v. 8, n. 7 JUL 2014.
• Citações Web of Science: 34

Resumo

Paracoccidioides lutzii is a new agent of paracoccidioidomycosis (PCM) and has its epicenter localized to the Central-West region of Brazil. Serological diagnosis of PCM caused by P. lutzii has not been established. This study aimed to develop new antigenic preparations from P. lutzii and to apply them in serological techniques to improve the diagnosis of PCM due to P. lutzii. Paracoccidioides lutzii exoantigens, cell free antigen (CFA), and a TCA-precipitated antigen were evaluated in immunodiffusion (ID) tests using a total of 89 patient sera from the Central-West region of Brazil. Seventy-two sera were defined as reactive for P. brasiliensis using traditional antigens (AgPbB339 and gp43). Non-reactive sera for traditional antigens (n = 17) were tested with different P. lutzii preparations and P. lutzii CFA showed 100% reactivity. ELISA was found to be a very useful test to titer anti-P. lutzii antibodies using P. lutzii-CFA preparations. Sera from patients with PCM due to P. lutzii presented with higher antibody titers than PCM due to P. brasiliensis and heterologous sera. In western blot, sera from patients with PCM due to P. lutzii were able to recognize antigenic molecules from the P. lutzii-CFA antigen, but sera from patients with PCM due to P. brasiliensis could not recognize any P. lutzii molecules. Due to the facility of preparing P. lutzii CFA antigens we recommend its use in immunodiffusion tests for the diagnosis of PCM due to P. lutzii. ELISA and western blot can be used as complementary tests. (AU)

• Processo FAPESP: 12/06593-0 - Paracoccidioides lutzii: estudos antigênicos e moleculares.
• Beneficiário: Gregory Gegembauer
• Linha de fomento: Bolsas no Brasil - Mestrado
• Processo FAPESP: 09/54024-2 - Biologia molecular e proteômica de fungos de interesse médico: Paracoccidioides brasiliensis e Sporothrix schenckii
• Beneficiário: Zoilo Pires de Camargo
• Linha de fomento: Auxílio à Pesquisa - Temático