RESUMO Com o objetivo de avaliar a expectativa de vida dos cães na área metropolitana de São Paulo e as causas relacionadas com a morte destes, foram analisados dados

Dermatophytes are fungi that cause superficial mycoses in animals and humans. While studies have shown that domestic cats (Felis catus) are often asymptomatic carriers of dermatophytes, and thus a significant source of infection, this aspect has not been studied in relation to their wild relatives. The present study was aimed at determining the presence of dermatophytes on the haircoat of healthy wild felids, kept in captivity at "Fundação Parque Zoológico de São Paulo". Samples were taken from 130 adult animals of both sexes: 25 lions (Panthera leo), 12 tigers (Panthera tigris), 6 jaguars (Panthera onca), 4 leopards (Panthera pardus), 2 snow leopards (Panthera uncia), 2 pumas (Puma concolor), 2 cheetahs (Acinonyx jubatus), 1 ocelot (Leopardus pardalis), 28 tiger cats (Leopardus tigrinus), 10 margays (Leopardus wiedii), 8 geoffroy's cats (Leopardus geoffroyi), 22 jaguarundis (Herpailurus yagouaroundi) and 8 pampas cats (Oncifelis colocolo). The samples were obtained by rubbing the haircoat of the animals with squares of sterile carpet, and then seeded onto Petri dishes containing Mycobiotic agar (Difco™). The plates were incubated at 25°C for 4 weeks. The isolates were subcultured in Sabouraud dextrose agar supplemented with chloramphenicol (100mg/L) and cultured on slides for posterior identification by their macro-and microscopic characteristics. Microsporum gypseum was isolated from two apparently healthy lionesses (1.6%), both kept in terrariums. The most prevalent contaminants were of the genera Penicillium (27.9%); Cladosporium (24.5%); Acremonium (12.1%); Scopulariopsis and Chrysosporium (9.8%); and Aspergillus (5.3%). The occurrence of dermatophytes in the haircoat of healthy wild felids, maintained in captivity, confirms their status as asymptomatic carriers and characterizes them as sources of infection for other animals and for humans.

Abstract. Sporotrichosis is a polymorphic disease of humans and animals, which is acquired via traumatic inoculation of Sporothrix propagules into cutaneous or subcutaneous tissue. The etiological agents are in a clinical complex, which includes Sporothrix brasiliensis, Sporothrix schenckii, Sporothrix globosa, and Sporothrix luriei, each of which has specific epidemiological and virulence characteristics. Classical manifestation in humans includes a fixed localized lesion at the site of trauma plus lymphocutaneous sporotrichosis with fungal spreading along the lymphatic channels. Atypical sporotrichosis is a challenge to diagnosis because it can mimic many other dermatological diseases. We report an unusual, itraconazoleresistant cutaneous lesion of sporotrichosis in a 66-year-old Brazilian man. Histopathological examination of the skin revealed vascular and fibroblastic proliferation with chronic granulomatous infiltrate composed of multinucleated giant cells. Sporothrix were isolated from the skin lesion, and phylogenetic analyses confirmed it to be sporotrichosis due to S. globosa, a widespread pathogen. Immunoblotting analysis showed several IgG-reactive molecules in autochthonous preparations of the whole cellular proteins (160, 80, 60, 55, 46, 38,35, and 30 kDa) and exoantigen (35 and 33 kDa). The patient was first unsuccessfully treated with daily itraconazole, and then successfully treated with potassium iodide.

Fungi produce a broad spectrum of enzymes capable of degrading different substrates in nature. When the substrate is the tissue of a vertebrate host, these enzymes acts as a fungal virulence factor that increases the pathogenicity of the fungus. Trichosporon yeasts are emerging pathogens that infect immunocompromised patients. Little is known about the virulence characteristics of these fungi. The aim of this research was to characterize the behavior of protease, phospholipase, lipase and DNase production in different species of Trichosporon, with a focus on the influence of incubation temperature on the expression of these enzymes. Classical methodologies were used in all of the experiments, and the results were statistically analyzed. The proportions of the samples that produced each type of enzyme were as follows: lipases (95.5%), phospholipases (56.8%), proteases (50,0%) and DNases (38.6%). The incubation temperature was an important factor in the expression of enzymatic activity, and it influenced the incubation period of each species. Although these data concerning the enzymatic activity expressed by isolates of Trichosporon are valuable, further research is warranted to completely characterize this new pathogen, as well as in vivo studies to determine the roles of these enzymes in the pathogenesis of trichosporonosis.