Abstract:
INTRODUCTION:The agents of paracoccidioidomycosis, historically identified as Paracoccidioides brasiliensis, are in fact different phylogenetic species. This study aims to evaluate associations between Paracoccidioides phylogenetic species and corresponding clinical data. METHODS:Paracoccidioides strains from INI/Fiocruz patients (1998-2016) were recovered. Socio-demographic, epidemiological, clinical, serological, therapeutic and prognostic data of the patients were collected to evaluate possible associations of these variables with the fungal species identified through partial sequencing of the ADP-ribosylation factor (arf) and the 43-kDa-glycoprotein (gp43) genes. RESULTS:Fifty-four fungal strains were recovered from 47 patients, most (72.3%) infected in Rio de Janeiro state, Brazil. Forty-one cases were caused by Paracoccidioides brasiliensis and six by Paracoccidioides americana (former PS2). P. brasiliensis was responsible for severe lymph abdominal forms, whereas patients infected with P. americana presented a high rate of adrenal involvement. However, no statistically significant associations were found for all variables studied. P. americana presented 100% reactivity to immunodiffusion, even when tested against antigens from other species, while negative results were observed in 9 (20%) cases caused by P. brasiliensis, despite being tested against a homologous antigen. CONCLUSIONS:P. brasiliensis and P. americana are sympatric and share similar clinical features and habitat, where they may compete for similar hosts.
journal_name
PLoS Negl Trop Disjournal_title
PLoS neglected tropical diseasesauthors
de Macedo PM,Teixeira MM,Barker BM,Zancopé-Oliveira RM,Almeida-Paes R,Francesconi do Valle ACdoi
10.1371/journal.pntd.0007309subject
Has Abstractpub_date
2019-04-15 00:00:00pages
e0007309issue
4eissn
1935-2727issn
1935-2735pii
PNTD-D-18-01650journal_volume
13pub_type
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