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At least 217 records · Page 12Linked to original sources
PubMed1986

Bovine ringworm. An outbreak caused by Trichophyton mentagrophytes var. granulare in Greece.

Seven cattle barns were investigated during the years 1976 through 1977. Six of these barns located in central Euboea have been characterized as "suspect" barns because one or more persons working in these barns had been infected by dermatomycosis. The seventh barn serving as control was located on the opposite side of the Boeotic coast. A total of 60 "suspected as infected" animals were isolated from all these barns. Twenty-one of them (35%) gave positive cultures for dermatophytes in Sabouraud medium. Of the 113 "healthy" animals that were examined, 28 (24.8%) gave positive cultures. The only pathogenic strain of dermatophyte that was isolated was the Trichophyton mentagrophytes var. granulare.

Animal Husbandry↗
PubMed1997

Soil dermatophytes in Madras, India, in relation to human ringworm.

A total of 269 soil samples collected from different habitats in Madras, India, were screened for the presence of dermatophytes by the hair-baiting technique. Three strains of Trichophyton mentagrophytes and 16 strains of Microsporum gypseum complex were isolated. These strains were subjected to the mating experiment. 2/3 soil isolates of Trichophyton mentagrophytes belonged to Arthroderma vanbreuseghemii (+) mating type, and 1/3 was Arthroderma vanbreuseghemii (-) mating type. Similarly 6/70 clinical strains of Trichophyton mentagrophytes isolated in our previous study also belonged to Arthroderma vanbreuseghemii (+) mating type. These 6 strains were isolated from severe cases of tinea capitis in children belonging to rural Madras. The teleomorphic and mating type homology between the clinical and soil isolates of T. mentagrophytes suggest that soil may act as reservoir for these organisms. The incompatible clinical strains of T. mentagrophytes var. interdigitale and A. vanbreuseghemii showed DNA homology, thereby establishing the epidemiologic link which supports the above findings.

Arthrodermataceae↗
PubMed1998

[Variability of Trichophyton cerrucosum isolates from vaccinated herds with cattle ringworm].

Twenty-seven strains of Trichophyton verrucosum from 14 cattle herds in the Federal States of Thuringia and Mecklenburg-Vorpommern were examined by culture morphological and molecular biological (PCR fingerprinting, AFLP analysis sequencing of ITS region) methods. Six reference strains of the same species, among them the so-called album and ochraceum varieties, were also included. Despite great variability in terms of culture morphology, which suggested their possible classification into 4 different colony types, all T. verrucosum isolates were genotypically almost identical. Even the 2 field isolates growing with yellow pigment, which could possibly be regarded as belonging to the ochraceum variety, could not be differentiated using molecular biological methods. The results do not provide indications of a separate taxonomic position of the 3 T. verrucosum varieties. Furthermore, there is no evidence confirming the suspected infection of cattle herds with ochraceum strains as the cause of the failure of immune prophylaxis using various T. verrucosum vaccines. The frequent occurrence of animals not responding to vaccination could not be explained either. It should be assumed that the main factors responsible for this situation include poor handling of the vaccine strains and errors in application, especially the absence of continuous and systematic immune prophylaxis in the herds.

Animals↗