Abstract:
:Paracoccidioidomycosis (PCM) is a neglected fungal disease that elicits an important granulomatous inflammatory reaction which aims to isolate the fungi and resolve the infection; besides the innate cellular response, the patients' sera may contain different levels of antibodies directed against PCM's pathogenic agent: Paracoccidioides brasiliensis (Pb). The aim of the study was to assess the distinct serum antibody levels of 19 chronic PCM patients and to associate these levels to the granulomatous inflammatory response and presence of fungi in oral lesions caused by Pb. The presence of Pb was detected and counted within oral tissues using immunohistochemistry; antibody levels were classified as negative, low-grade, moderate or high-grade groups. The Kruskal-Wallis and Dunn's test were used to verify possible associations among the groups. Interestingly, lower antibody titres were associated with lesser numbers of Pb, which favours the cellular response over the humoral response to fight PCM. On the other hand, negative serological results were linked to a higher presence of Pb in the tissues, indicating that a deficient humoral response supports the fungal proliferation. The number of Pb was conveniently associated with the level of serum antibodies, showing that the humoral immune response is required, however, not solely responsible to restrain the dissemination of Pb.
journal_name
Mycosesjournal_title
Mycosesauthors
de Carli ML,Cardoso BC,Malaquias LC,Nonogaki S,Pereira AA,Sperandio FF,Hanemann JAdoi
10.1111/myc.12325subject
Has Abstractpub_date
2015-06-01 00:00:00pages
356-61issue
6eissn
0933-7407issn
1439-0507journal_volume
58pub_type
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