Finger-Prick Whole Blood Cryptococcal Antigen Lateral Flow Assay for the Diagnosis of Cryptococcosis in HIV-Negative Patients: A Case Series Study in Two Tertiary Centers in São Paulo, Brazil

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art_VIDAL_FingerPrick_Whole_Blood_Cryptococcal_Antigen_Lateral_Flow_Assay_2023.PDF (1.44 MB)
Citações na Scopus
0
Tipo de produção
article
Data de publicação
2023
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
MDPI
Autores
OLIVEIRA, Fernanda Gurgel
VIEIRA, Marcela
PEREIRA, Luisa
LUCAS JUNIOR, Rodovaldo M.
BOULWARE, David R.
Citação
JOURNAL OF FUNGI, v.9, n.12, article ID 1140, 15p, 2023
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
Cryptococcosis in HIV-negative patients can be an opportunistic or endemic disease. There are no published studies on the use of the finger-prick whole blood (point-of-care) cryptococcal antigen lateral flow assay (CrAg LFA) for diagnosing cryptococcosis in HIV-negative patients. We conducted a case series study of HIV-negative patients with cryptococcosis in two centers in S & atilde;o Paulo, Brazil. The objectives were to identify the sensitivity of a finger-prick whole blood CrAg LFA and to describe the main characteristics of this population. We identified 30 HIV-negative patients with cryptococcosis [19 (63%), male; median age, 47 years]. Ten (33%) patients were immunosuppressed, ten (33%) had other comorbidities, and ten (33%) were apparently immunocompetent and without comorbidities. The distribution of the sites of cryptococcosis was as follows: the central nervous system, 90% (n = 27); pulmonary, 43% (n = 13); and other extrapulmonary sites, 40% (n = 12). The sensitivity of the finger-prick whole blood CrAg LFA for the diagnosis of cryptococcosis was 97% (29/30). Among 26 participants with cryptococcal meningitis, the sensitivity of testing cerebrospinal fluid was as follows: CrAg latex agglutination, 77% (20/26); CrAg LFA, 96% (25/26); and culture, 81% (21/26). Culture speciation identified Cryptococcus gattii in 16 (62%) cases, and all had a positive finger-prick whole blood CrAg LFA. This test presented high sensitivity to the diagnosis of cryptococcosis in HIV-negative patients, including those caused by C. gattii.
Palavras-chave
cryptococcosis, cryptococcal meningitis, diagnosis, point-of-care testing, lateral flow assay, Cryptococcus gattii, Brazil
URI
https://observatorio.fm.usp.br/handle/OPI/58157
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Coleções
Artigos e Materiais de Revistas Científicas - HC/ICHC
Artigos e Materiais de Revistas Científicas - LIM/47
Artigos e Materiais de Revistas Científicas - LIM/48
Artigos e Materiais de Revistas Científicas - LIM/49
Artigos e Materiais de Revistas Científicas - ODS/03