Daniel Almeida Freitas

Dr. Daniel Almeida Freitas


Research Focus & Metrics

Academic Career Length

2Years (2025-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
21 January 2026 in Microorganisms
Verified
Journal Article
Open access
PDF file
PFPaola Aparecida Alves Ferreira
Paola Aparecida Alves Ferreira
LRLucas Daniel Cibolli Roso
Lucas Daniel Cibolli Roso
DFDaniel Almeida Freitas
Daniel Almeida Freitas
ABAna Paula Pereira Bressani
Ana Paula Pereira Bressani
PFPaulo Henrique Da Cruz Ferreira
Paulo Henrique Da Cruz Ferreira
CRCíntia Lacerda Ramos
Cíntia Lacerda Ramos
Candida spp. are important opportunistic human fungal pathogens. This study aimed to identify and characterize Candida spp. obtained from patients admitted to an Intensive Care Unit (ICU), focusing on virulence attributes and susceptibility to antifungal agents. A total of 131 isolates from oral and tracheobronchial secretions of adult ICU patients were evaluated. Phenotypic identification was performed using chromogenic culture media for Candida, followed by MALDI-TOF mass spectrometry, with representative isolates confirmed by ITS sequencing. Antifungal susceptibility to fluconazole, ketoconazole, and amphotericin B was determined only by the agar disk diffusion method, and virulence was assessed through esterase, DNase, protease, and hemolytic activity assays. C. albicans was the prevalent species, followed by C. tropicalis, C. krusei, C. glabrata, C. parapsilosis, C. dubliniensis, C. lusitaniae, and C. guilliermondii. Antifungal resistance rates reached 51.1% for fluconazole, 42.7% for ketoconazole, and 19.1% for amphotericin B, as determined by disk diffusion method. Overall, 64.9% of the isolates exhibited esterase activity, 18.3% DNase, 45.8% protease, and 67.2% exhibited hemolytic activity. Oral isolates were more frequent than tracheal isolates and demonstrated a higher prevalence of antifungal resistance and virulence traits. These findings underscore the epidemiological importance of characterizing Candida species in hospitals to better understand the yeast profile and to support adequate clinical management.

27 January 2025 in Diagnostic Microbiology and Infectious Disease
Verified
Journal Article
Closed access
PFPaulo Henrique Da Cruz Ferreira
Paulo Henrique Da Cruz Ferreira
CMCristiane Rocha Fagundes Moura
Cristiane Rocha Fagundes Moura
VLVanessa Kelly da Silva Lage
Vanessa Kelly da Silva Lage
LTLeonardo Augusto da Costa Teixeira
Leonardo Augusto da Costa Teixeira
HCHenrique Silveira Costa
Henrique Silveira Costa
VMVanessa Mendonça
Vanessa Mendonça