This study examined the association between oral candidiasis in elderly users and nonusers of prosthesis and its predisposing factors. To this end, we performed a cross-sectional study where saliva samples from 48 patients were collected they used prosthesis and 43 patients (control group) who did not use. Among the 91 patients, Candida spp were isolated in 40 (83.3%) who used prosthesis and in 23 (53.5%) in the control group. A statistically significant association was determined between the two groups, the isolation of yeasts and dental prosthesis (p < 0.05, OR = 4.3). The most common etiological agent was Candida albicans (37 isolates), with 23 (62.2%) in the denture group and 14 (37.8%) (control group). Among patients who presented clinical manifestations of oral candidiasis (n = 24), 83.3% (n = 20) belonged to the group that wore dentures, while only 16.7% (n = 4) belonged to the control group. Elderly patients with diabetes had 4.4 times higher estimated risk of developing oral candidiasis when compared with individuals without this condition. There was no statistically significant association between being user prostheses and have diabetes with the onset of candidiasis. No statistically significant association was determined between xerostomia, use of prosthesis and oral candidiasis. The use of prosthetics and poor oral hygiene in elderly patients predisposes to the development of oral candidiasis.

A Estomatite Protética (EP) é freqüentemente observada em pacientes portadores de prótese total, sendo a presença de fungos considerada um importante fator para o seu aparecimento. Baseado neste fato, avaliamos pacientes edêntulos com e sem estomatite protética, identificando os fungos presentes, e os níveis de proteinase e fosfolipase produzidos por Candida albicans. Os resultados mostraram que C. albicans foi a espécie mais freqüente, prevalecendo em pacientes com EP. Todas as cepas de C. albicans isoladas foram fortemente positivas para proteinase, diferentemente da atividade de fosfolipase.

The so called erithematous stomatitis is frequently observed in denture wearers, being local factors, mainly related to the presence of yeasts, considered important for its development. Having these aspects in mind, we evaluated edentulous patients with and without denture stomatitis (DS), identifying the yeasts obtained from the palate, and determining the relative level of the proteinase and phospholipase exo-enzymes produced by C. albicans. The results suggested that C. albicans was the most frequent species observed, being more prevalent in patients presenting DS, isolated or in association with other yeasts, with high expression of proteinase.

Entre oitenta e seis amostras da mucosa oral de pacientes com AIDS, 59 (68,60%) foram positivas para leveduras do gênero Candida. A identificação, feita pela produção de tubo germinativo e clamidósporos e através de assimilação e fermentação de hidratos de carbono, revelou 52 cepas (88,13%) de C.albicans, 4 (6,77%) de C. tropicalis e 3 (5,08%) de C.krusei. Avaliação destas leveduras para susceptibilidade in vitro frente a anfotericina B, flucitosina, itraconazol, fluconazol e cetoconazol, foi realizada pelo método de diluição em ágar. Comparando-se os valores de concentração inibitória mínima encontrados com os níveis séricos alcançados por estes antifúngicos verificou-se que apenas 8,47% e 5,08% das 59 leveduras foram resistentes a anfotericina B e flucitosina, respectivamente. Foi registrada uma percentagem de cepas resistentes aos derivados azólicos, sendo 25,42% ao itraconazol, 45,76% ao cetoconazol e 66,10% ao fluconazol.

Candida spp was isolated from 59 (68.60%) out of eighty six samples of oral mucosa of AIDS patients. The identification, based or the production of a germ tube and chlamydospores, and on the assimilation and fermentation of carbohydrates, revealed 52 strains (88.13%) of C. albicans, 4 (6.77%) of C. tropicalis and 3 (5.08%) of C. krusei. The susceptibility of these strains to amphotericin B, flucytosine, itraconazole, fluconazole and ketoconazole was determined using the agar dilution method. Comparing the minimum inhibitory concentration values found in the susceptibility test with the serum levels achieved by these drugs, only 8.47% and 5.08% of the yeasts strains proved to be resistant to amphotericin B and flucitosyne, respectively. A high frequency of strains resistant to azole derivatives (25.42%, to itraconazole, 45.76%, to ketoconazole and 66.10% to fluconazole) was observed.

Cinqüenta felinos hígidos, adultos - vinte e seis machos e vinte e quatro fêmeas - sem definição racial, com distintas idades, reunidos em dois grupos (GRUPO 1- animais domiciliados e GRUPO 2 - animais que rendados) de vinte e cinco animais cada. Após anamnese e prévia sedação, os gatos foram submetidos a exame físico e à otoscopia, comprovando-se a ausência de lesões meatais e timpânicas, com cureta de Buck e wragatoas estéreis, foi colhido material meatal, que foi então submetido a exames bacteriológico e micológico. No Grupo 1, foi evidenciado presença de Otodectes cynotis (4% das amostras), em 72% dos casos de bolores e leveduras (Cladosporium sp 66,6%, Malassezia sp 40%, Penicillium sp 33%, Aspergillus sp 33,3%, Rhodotorula sp 20,0%, Mycelia sp 13,3% e Alternaria sp, Aureobasidium sp, Ryzopus sp, Trichosporon sp, todos com 6,6%) e, finalmente, em 64% da amostragem, bactérias dos gêneros Staphylococcus spp (81,2%), Pseudomonas sp (12,5%), Klebsiella sp (12,5%), Acinetobacter sp, Bacilos difteróides, Enterobacter sp, Lactobacillus spp (todos com 6,2%). No Grupo 2, o Otodectes sp foi identificado em 36% das amostras, em 96% daquelas isolaram-se fungos dos gêneros: Malassezia sp - 54,1%, Aspergillus e Penicillium sp, ambos com 33,3%, Microsporum sp - 29,1%, Cladosporium sp - 16,6%, Trichoderma sp - 12,5%, Alternaria e Phoma sp, ambos com 8,3% e Epicoccum sp, Neurospora sp. Mycelia sp, Rhodotorula sp, todos com 4,1% e, por fim, em 20 das 25 amostras (80%) isolaram-se pelo menos uma cepa bacteriana (Staphylococcus spp 75%, Klebsiella sp 20,8%, Bacilos difteróides 12,5%, Pseudomonas sp, 8,3%) e Acinetobacter sp, Enterobacter sp e Escherichia sp, todos com 4,1% cada um em cultivo monoespecífico ou em associação.

The study aimed to find out the frequency of microrganisms in the external ear canal in healthy cats. Fifty adult male (26) and female (24) short hair cats were utilized for the purpose, and they were divided according to living enviroment (Group l - indoor and Group 2 - outdoor). All animals were submitted to sedation prior to physical and otoscopic examinations in order to confirm to be healthy. Samples were obtained from ear canal by use of Buck curetes and sterile cotton sticks for microbiological investigation. In cats of Group 1, Otodects cynotis were observed in 4%. In 72% of the animals yeasts and molds were found (Cladosporium sp 66.6%, Malassezia sp 40%, Penicillium sp 33%, Aspergillus sp 33.3%, Rhodotorula sp 20%, Mycelia sp 13.3%, and 6.6% for Alternaria sp, Aureobasidium sp, Ryzopus sp and Trichosporon sp), finally, m 64% of the samples, was detected Staphylococcus spp (81.2%), Pseudomonas sp (12.5%), Klebsiella sp (12.5%), and 6,2% for Acinetobacter sp. Bacilos difteroides, Enterobacter sp, Lactobacillus spp. In Group 2, O. cynotis was isolated in 36% of cats, and in 96% of the animals wasfound Malassezia sp (54.1%), Aspergillus sp (33.3%), Penicillium (33.3%), Microsporum sp (29.1%), Cladosporium sp (16.6%), Trichoderma sp (12.5%) Alternaria sp (8.3%), Phoma sp (8.3%), Epicoccum sp (4.1%), Neurospora sp (4.1%), Mycelia sp (4.3%), Rhodotorula sp (4.1%). In 20 out of 25 (80%), at least one bacterial microrganism was isolated (Staphylococcus sp 75%, Klebsiela sp 20.8%, Bacilos difteroides 12.5%, Pseudomonas sp 8.3%, and 4.1% for Acynetobacter sp, Enterobacter and Escherichia sp).