23 documents found, page 1 of 3
Aspergillosis in free-ranging Magellanic penguins
Melo, Aryse Martins; Poester, Vanice Rodrigues; Trápaga, Mariana Rodrigues; Stevens, David A.; Canabarro, Paula Lima; Adornes, Andréa CorradoWe evaluated the mortality due to aspergillosis in free-ranging Magellanic penguins during their migration and the reproductive season. A total of 98 carcasses of penguins were collected along 370 km of coastline in Southern Brazil, between June 2017 and October 2019, and from reproductive colonies in Patagonian Argentina, in January 2019. All animals were necropsied, and only proven cases were computed. Asperg...
Initial Results of the International Efforts in Screening New Agents against Ca...
Poester, Vanice Rodrigues; Munhoz, Lívia Silveira; Benelli, Jéssica Louise; Melo, Aryse Martins; Al-Hatmi, Abdullah M.S.; Larwood, David J.Background: Candida auris is an emergent fungal pathogen and a global concern, mostly due to its resistance to many currently available antifungal drugs. Objective: Thus, in response to this challenge, we evaluated the in vitro activity of potential new drugs, diphenyl diselenide (PhSe)2 and nikkomycin Z (nikZ), alone and in association with currently available antifungals (azoles, echinocandins, and polyenes) ...
Synergy Between Pseudomonas aeruginosa Filtrates And Voriconazole Against Asper...
Sass, Gabriele; Marsh, Julianne J.; Shrestha, Pallabi; Sabino, Raquel; Stevens, David A.Persons with cystic fibrosis (CF) frequently suffer from Pseudomonas aeruginosa and Aspergillus fumigatus co-infections. There is evidence that co-infections with these interacting pathogens cause airway inflammation and aggravate deterioration of lung function. We recently showed that P. aeruginosa laboratory isolates synergistically interact with the anti-fungal azole voriconazole (VCZ), inhibiting biofilm me...
Anti-Aspergillus fumigatus IgG in patients with bronchiectasis and its relation...
Rodrigues Trápaga, Mariana; Rodrigues Poester, Vanice; Sanchotene, Karine Ortiz; Martins Melo, Aryse; Benelli, Jéssica Louise; Basso, Rossana PatriciaAspergillosis is a mycosis, most commonly afecting the airways. This mycosis can worsen the clinical condition of patients with concurrent lung diseases. We assayed for the presence of serum anti-A. fumigatus IgG in bronchiectasis patients from a tertiary hospital in south Brazil and evaluated the relationship with clinical outcome. Thirty-one patients with bronchiec tasis, without cystic fbrosis, were included...
Molecular identification of Aspergillus isolates from Magellanic penguins
Melo, Aryse Martins; da Silva Filho, Rodolfo Pinho; Poester, Vanice Rodrigues; von Groll, Andrea; Stevens, David A.; Sabino, RaquelAspergillosis is an important disease in marine birds and has a mortality rate of 50% in Magellanic penguins (Spheniscus magellanicus) in captivity. Molecular biology allows the precise identification of Aspergillus to species level, which is important since cryptic species may show differences in their virulence attributes and in their antifungal susceptibility. This work aimed to perform molecular identificat...
Completion of the sequence of the Aspergillus fumigatus partitivirus 1 genome
Filippou, Charalampos; Coutts, Robert H. A.; Stevens, David A.; Sabino, Raquel; Kotta-Loizou, IolyA Portuguese isolate of Aspergillus fumigatus was found to contain three double-stranded (ds) RNA elements ranging in size from 1.1 to 1.8 kbp and comprising the genome of a strain of Aspergillus fumigatus partitivirus 1 (AfuPV-1) previously thought to contain only the two largest dsRNA elements. The sequence of the smallest dsRNA element is described here, completing the sequence of the AfuPV-1 genome. Sequenc...
Aspergillosis in free-ranging aquatic birds
Melo, Aryse Martins; Silva-Filho, Rodolfo Pinho da; Poester, Vanice Rodrigues; von Groll, Andrea; Fernandes, Cristina Gevehr; Stevens, David A.Due to the difficulty in the access to free-ranging birds, data regarding Aspergillus infections in wild avian species is rare compared to captive wild and domestic birds. Objective: report three cases of Aspergillus section Fumigati causing fungal disease in free-ranging aquatic birds, with the identification of the causal agent to the species level. Case reports: The diagnosis of aspergillosis was performed b...
Activity of Diphenyl diselenide against Aspergillus isolates
Melo, Aryse Martins; Poester, Vanice Rodrigues; Munhoz, Lívia; Trápaga, Mariana; Roca, Beatriz; Klafke, Gabriel Baracy; Sabino, RaquelOrganoselenium compounds have been showing promising antimicrobial activity against bacteria and some fungal species. Among these compounds, diphenyl diselenide (PhSe)2 is a simple and chemically stable molecule with proven low toxicity to animal hosts. Although the mechanisms of action of this molecule are not totally clear, it has been reported that it has a prooxidative activity for microorganisms, due to gl...
Aspergillosis, avian species and the one health perspective : the possible impo...
Melo, Aryse Martins; Stevens, David A.; Tell, Lisa A.; Veríssimo, Cristina; Sabino, Raquel Filipa Pinheiro; Xavier, Melissa OrzechowskiThe One Health context considers health based on three pillars: humans, animals, and environment. This approach is a strong ally in the surveillance of infectious diseases and in the development of prevention strategies. Aspergillus spp. are fungi that fit substantially in this context, in view of their ubiquity, as well as their importance as plant pathogens, and potentially fatal pathogens for, particularly, ...
Molecular identification of clinical and environmental avian Aspergillus isolates
Sabino, Raquel; Burco, Julia; Valente, Joana; Veríssimo, Cristina; Clemons, Karl V.; Stevens, David A.; Tell, Lisa A.Aspergillosis causes high morbidity and mortality in avian species. The main goal of this study was to use molecular techniques to identify Aspergillus species collected from different avian species with aspergillosis. A subsample of those isolates was also screened for resistance to itraconazole. Over a 2-year period, clinical samples were recovered from 44 birds with clinical signs of the disease, clinical pa...