Mycological Diagnosis of Animal Dermatophytoses by Jaroslav Dvořák, Miloš Otčenášek (auth.)

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By Jaroslav Dvořák, Miloš Otčenášek (auth.)

There aren't many organic disciplines, that have skilled such speedy improvement as have human and veterinary mycology lately. within the preliminary phases organisms, whoEe impact on guy has no longer b~en decided, were investigated on a in basic terms educational foundation and with specific connection with their taxonomic place. As lately because the thirties, the pathogenic brokers of dermatophytoses have been identified jointly less than such names as "Micro­ sporum" and "Trichophyton". Such designation happened in so much clinical and veterinary literature without reference to the truth that fungi are organisms of a hugely complex and so much variable morphological constitution, an complex improvement and a distribution over a variety of environments, infecting hosts of the animal country. The higher the credits, for this reason, that may be attributed to the pioneers of mycological learn, the founders of contemporary mycology akin to R. Sabouraud, M. Langeron, R. Vanbreuseghem, Ch. W. Emmons, who elucidated the significance of mycology in human and veterinary medication. to at least one of them, Professor R. V anbreuseghem, this e-book has been committed. regardless of those super efforts, many points of the biology and ecology of fungi have nonetheless remained vague in view of the complex improve­ ment during the a number of levels, the range of species and the big numbers of only saprophytic species happening in nature. at this time, mycoparasitic an infection in guy and animals is of maximum importance.

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Additional resources for Mycological Diagnosis of Animal Dermatophytoses

Sample text

Verrucosum- the most common animal dermatophyte in Czechoslovakia. XI. CULTIVATION A prerequisite for establishing a diagnosis of veterinary dermatophytoses is the demonstration by cultivation of the causative agent. g. ). In this way a differential diagnosis may be made. The limited reliability of the results of microscopic examination of samples taken from cutaneous lesions of animals (see above) emphasizes that the cultivation must be performed consistently. ). ). For species identification it is necessary to isolate the dermatophyte from the lesion, to obtain a colony.

Its exposure to the iodine solution. In-this time the changes in the structure of the macroconidia caused by iodine are completed. remain intact, ·but their structure cannot be satisfactorily distinguished. The cellular wall of tlie macroconidia · seems to thicken after a 10 min exposure to iodine, but these changes seem to be constant and, therefore, the use of iodine solution may be permitted although even artificial ·blues ma,y be obtained. Table 13 shows the number ofmacroconidia produced by the individual dermatophytes.

No differences exist between T. mentagrophytes and T . m . var. interdigitale and between T. terrestre and T . verrucosum. As evident from the Table, hairs are frequently d'sintegrated by both coaxial and rectangular keratinolysis or they may remain intact. The method must be considered as supplementary and its diagnostic value must be verified. 4. Nutritional tests AJELLO et al. (1963) summarized the nutritional patterns of some Trichophyton species. It has been shown that it may be possible to use these tests for identification (Table 19).

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