Abstract:
:Fusarium spp. are recognized as the second most frequently filamentous fungi causing opportunistic infections and particularly important due to the increasing number of immunocompromised patients. F. keratoplasticum (a member of F. solani species complex) is one of the Fusarium species commonly associated with human infection, and therefore, studies on the virulence of this fungus are needed. This study aimed to confirm the presence of melanin in F. keratoplasticum from a patient with systemic fusariosis. Immunofluorescence labeling with anti-melanin monoclonal antibody (MAb) was used to examine an expression of melanin in F. keratoplasticum in vitro and during infection. Electron spin resonance identified the particles extracted from F. keratoplasticum as stable free radical consistent with melanin. Lesional skin from the sites with fusariosis contained hyphal structures that could be labeled by melanin-binding MAb, while digestion of the tissue yielded dark particles that were reactive. These findings suggest that F. keratoplasticum hyphae and chlamydospores can produce melanin in vitro and that hyphae can synthesize pigment in vivo. Given the potential role of melanin in virulence of other fungi, this pigment in F. keratoplasticum may play a role in the pathogenesis of fusariosis.
journal_name
Mycopathologiajournal_title
Mycopathologiaauthors
Chiewchanvit S,Chongkae S,Mahanupab P,Nosanchuk JD,Pornsuwan S,Vanittanakom N,Youngchim Sdoi
10.1007/s11046-017-0156-2subject
Has Abstractpub_date
2017-10-01 00:00:00pages
879-885issue
9-10eissn
0301-486Xissn
1573-0832pii
10.1007/s11046-017-0156-2journal_volume
182pub_type
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