Biomedical subjects
Publications and source records attributed to S H Alves.
This paper reports a case of peritonitis caused by Trichosporon beigelii in a woman submitted to continuous ambulatory peritoneal dialysis. Diagnosis was established by direct examination and culture of dialysis effluent.
Explore the source record for details and available documents.
This paper reports a case of cutaneous infection of nontraumatic origin caused by Nocardia asteroides in a hospitalized patient with chronic obstructive pulmonary disease. Diagnosis was established by direct and histological examination, cultures from exudate and biopsy specimen. We discuss the classification of clinical forms of Nocardia infections affecting the skin.
Explore the source record for details and available documents.
Tinea pedis in the most common type of dermatophytosis, but can mimic many cutaneous diseases and tend to be chronic. We present a study of the frequency, epidemiology and clinical aspects of tinea pedis in the central region of Rio Grande do Sul during the period 1988-1997.
The purpose of the present study was to compare the susceptibility to four antifungal agents of 69 Cryptococcus neoformans strains isolated from AIDS patients with that of 13 C. neoformans strains isolated from the environment. Based on the NCCLS M27-A methodology the Minimal Inhibitory Concentrations (MICs) obtained for amphotericin B, itraconazole and ketoconazole were very similar for clinical and environmental isolates. Clinical isolates were less susceptible to fluconazole than environmental isolates. The significance of these findings and aspects concerning the importance, role and difficulties of C. neoformans susceptibility testing are also discussed.
We report eight cases of cryptococcosis in non-AIDS patients diagnosed in Santa Maria, RS, during 1961-1995. A review of the literature is performed and the prevalence of the infection caused by var neoformans in patients without underlying disease in subtropical regions is commented.
Thirty-one cases of sporotrichosis diagnosed in the central region of Rio Grande do Sul from 1988 to 1997 were studied. Clinical data were compared with a study concerning three past decades, clearly showing a decrease in the incidence of the mycosis, and an alteration in the profile of the infection, with a decrease of sporotrichosis in rural patients, children, women and farmers. In the past decade the mycosis was most frequent among urban adults with different professions, with the onset of the disease being associated with rural leisure activities such as fishing and hunting.
Candida strains susceptibility from cancer patients were compared with Candida strains susceptibility from patients, without cancer by MIC (minimal inhibitory concentration) and MFC (minimal fungicidal concentration) to Amphotericin B and Nystatin. Broth dilution method and agar dilution method were the procedure employed. The authors find no significant differences between the studied groups. The problem of Candida resistance to polyene antifungals is discussed.
The performance of broth dilution method and agar dilution method were compared by MIC (minimal inhibitory concentration) and MFC (minimal fungicidal concentration) from Candida strains to polyene and imizadole antifungal agents. The concordance between these methods was drug dependent. The best percent of concordance were showed when the polyenes were tested. The problems of sensitivity test for yeasts to antifungal drugs are discussed.