RESUMEN
In order to estimate the prevalence of dermatophytes and other fungi on healthy children hairs and nails, 92 hair samples and 85 nail samples (groups of 10 finger nails from each child) were collected from 5 nurseries (children aged 9 months up to 4 years) in Assiut city. From hair samples 22 species were collected, Trichophyton (2 species) and Microsporum (2 species) were the only recovered dermatophytes in addition to well known keratinophilic genus Chrysosporium (4 species). From nail samples, 18 species were identified, Trichophyton was represented by 4 species, Microsporum, 2 species and Chrysosporium, 4 species. Also, several other saprophytes and cycloheximide resistant fungi were isolated.
Asunto(s)
Antifúngicos/farmacología , Arthrodermataceae/efectos de los fármacos , Cicloheximida/farmacología , Farmacorresistencia Microbiana , Cabello/microbiología , Uñas/microbiología , Arthrodermataceae/aislamiento & purificación , Preescolar , Chrysosporium/efectos de los fármacos , Chrysosporium/aislamiento & purificación , Dermatomicosis/etiología , Humanos , Pruebas de Sensibilidad Microbiana , Microsporum/efectos de los fármacos , Microsporum/aislamiento & purificación , Casas Cuna , Trichophyton/efectos de los fármacos , Trichophyton/aislamiento & purificaciónRESUMEN
150 soil samples were collected, 90 from Nile Valley and Delta, 36 from desert and 24 from salt marshes. Human, buffalo and cow hair and sheep wool were used as baits at three incubation temperatures. Forty-four species which belong to twenty-one genera at 27 degrees C and forty-two which belong to twenty-two genera at 37 degrees C were collected. We isolated the following keratinophilic fungi Chrysosporium tropicum, C. keratinophilum, C. indicum, C. pannicola, C. queenslandicum, Trichophyton terrestre, T. mentagrophytes and Microsporum gypseum. Several other saprophytic fungi were isolated. No fungi were isolated at 45 degrees C.
Asunto(s)
Hongos/aislamiento & purificación , Cabello/microbiología , Microbiología del Suelo , Lana/microbiología , Animales , Búfalos , Bovinos , Ovinos , TemperaturaRESUMEN
50 water samples from 2 public swimming pools were tested for the presence of fungi using the hair baiting technique and plate count methods. Sabouraud's-dextrose agar and Littman-oxgall agar media were used for isolation of the fungi. Of the keratinolytic fungi 8 species were recorded of which three species were dermatophytes (Trichophyton terrestre, 14% of the samples; T. mentagrophytes, 10% and Microsporum gypseum, 6%). On Littman-oxgall agar the following species were recovered: Aspergillus flavus, A. fumigatus, A. niger, Penicillium chrysogeman, Syncephalastrum racemosum, Alternaria alternata and Mucor hiemalis.
Asunto(s)
Hongos/aislamiento & purificación , Piscinas , Microbiología del Agua , Arthrodermataceae/aislamiento & purificación , Arthrodermataceae/metabolismo , Recuento de Colonia Microbiana , Medios de Cultivo , Egipto , Hongos/metabolismo , Cabello/metabolismo , Queratinas/metabolismoRESUMEN
The frequency of occurrence of keratinolytic fungi in seventy soil samples collected from different sites in Upper Egypt and in the coastal area of the Mediterranean and baited with human and animal hair and pigeon feathers was determined. Twenty-one species in addition to an unidentified species, which belong to sixteen genera were collected. Chrysosporium indicum, B. tropicum, C. keratinophilum and Microsporum gypseum were the most frequent fungal species recovered from baited soils. The eight soil samples collected from the salt marshes of the coastal Mediterranean area were completely free from any keratinolytic fungi, whereas the sixty-two soil samples collected from cultivated soils contributed a species ranging from one to four species.
Asunto(s)
Hongos/aislamiento & purificación , Queratinas/metabolismo , Microbiología del Suelo , Animales , Egipto , Cabello , Humanos , Microsporum/aislamiento & purificación , Hongos Mitospóricos/aislamiento & purificaciónRESUMEN
The frequency of occurrence of keratinolytic fungi in seventy soil samples, collected from different sites in Upper Egypt and in the coastal area of the Mediterranean, was determined by baiting with human and animal hairs and pigeon feathers. Twenty-one species, in addition to an unidentified species, which belong to sixteen genera were collected. Chrysosporium indicum, C. Tropicum, C. keratinophilum, and Microsporum gypseum were the most frequent fungal species recovered from the baited soils. The soil samples collected from the salt marshes of the coastal Mediterranean area were completely free from any keratinolytic fungi, whereas the soil samples collected from cultivated soils contributed species, ranging from one to four species.
Asunto(s)
Hongos , Microbiología del Suelo , Egipto , Hongos/clasificaciónRESUMEN
In the early periods of soil storage, the total number of fungi almost regularly and significantly increased with the concentration of keratinaceous material (ground buffalo hooves) between 1% and 10%. A concentration of 20% was stimulative after 7 days and became toxic after 15 days and remained so through the end of the experiment. With increase in the storage period, the beneficial effect of all concentrations was lost and in the case of high concentrations (5-20%) toxic ammonia was produced. The occurrence of Scopulariopsis brevicaulis, Cephalosporium acremonium, Chrysosporium tropicum, C. indicum, and C. keratinophilum increased markedly, especially at the higher concentrations of the keratinaceous material and after long periods of incubation. With increase in the concentration of keratinaceous material, the rate of evolution of ammonia from the soil sharply increased during the second week after treatment and fell off sharply during the third and fourth weeks. In soil stored at 35 C, the rate of decline in total fungi after longer periods of incubation was sharper at 35 C than at 25 C. Also the amount of evolved ammonia during the first and the second weeks was almost always higher at 35 C than at 25 C. Fourteen species were tested for keratinolytic activity. Three of them were highly keratinolytic and five moderately so.