Flávia F Veiga1, Lidiane V de Castro-Hoshino2, Francielle Sato2, Amanda Bombassaro3, Vânia A Vicente3, Vanessa Mendes1, Mauro L Baesso2, Melyssa Negri1, Terezinha Ie Svidzinski1. 1. Departamento de Análises Clínicas e Biomedicina, Universidade Estadual de Maringá (UEM), Avenida Colombo, 5790, Maringá, PR, CEP 87020-900, Brazil. 2. Departamento de Física, Universidade Estadual de Maringá (UEM), Avenida Colombo, 5790, Maringá, PR, CEP 87020-900, Brazil. 3. Microbiology, Parasitology & Pathology Post-Graduation Program, Department of Pathology, Federal University of Paraná (UFPR), Mailbox: 19031, Curitiba, Paraná, Brazil.
Abstract
AIM: To evaluate and characterize the etiopathogenesis of the fusarial onychomycosis in an ex vivo study through fragments of sterile human nail, without the addition of any nutritional source. MATERIALS & METHODS: The infection and invasion of Fusarium oxysporum in the nail were evaluated by scanning electron microscopy (SEM), CFU, matrix, histopathology and Fourier Transform Infrared Spectrometer coupled to an equipment with diamond accessory (FTIR-ATR). RESULTS: F. oxysporum infected and invaded across the nail, regardless of application face. However, the dorsal nail surface was the strongest barrier, while the ventral was more vulnerable to infection and invasion process. The fungal-nail interaction resulted in the formation of a dense biofilm. CONCLUSION: F. oxysporum infect and invade the healthy human nail, resulting in biofilm formation. Therefore, F. oxysporum is likely a primary onychomycosis agent.
AIM: To evaluate and characterize the etiopathogenesis of the fusarial onychomycosis in an ex vivo study through fragments of sterile human nail, without the addition of any nutritional source. MATERIALS & METHODS: The infection and invasion of Fusarium oxysporum in the nail were evaluated by scanning electron microscopy (SEM), CFU, matrix, histopathology and Fourier Transform Infrared Spectrometer coupled to an equipment with diamond accessory (FTIR-ATR). RESULTS:F. oxysporum infected and invaded across the nail, regardless of application face. However, the dorsal nail surface was the strongest barrier, while the ventral was more vulnerable to infection and invasion process. The fungal-nail interaction resulted in the formation of a dense biofilm. CONCLUSION:F. oxysporum infect and invade the healthy human nail, resulting in biofilm formation. Therefore, F. oxysporum is likely a primary onychomycosis agent.
Authors: Alexander K C Leung; Joseph M Lam; Kin F Leong; Kam L Hon; Benjamin Barankin; Amy A M Leung; Alex H C Wong Journal: Recent Pat Inflamm Allergy Drug Discov Date: 2020