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  • Title: An indirect fluorescent antibody technique for detection of anti-Dermatophilus congolensis antibodies in sheep.
    Author: Hermoso De Mendoza J, Nieto CG, Arenas A, Alonso JM, Rey J, Gil MC, Anton J, Cardenal A, Hermoso De Mendoza M.
    Journal: Trop Anim Health Prod; 1994 May; 26(2):74-8. PubMed ID: 7941032.
    Abstract:
    An indirect fluorescent antibody (IFA) technique has been developed for detection of anti-Dermatophilus antibodies in sheep. Sera from 25 bacteriologically confirmed clinically affected sheep and from 10 negative non affected lambs were used. Whole cell antigen from brain heart infusion cultures of D. congolensis was used and all sera were tested in the same way for cross-reactivity against antigens obtained from cultures of Actinomyces viscosus, Micrococcus luteus, Nocardia asteroides, and Corynebacterium pseudotuberculosis. Sera from Dermatophilus-infected sheep gave positive results with D. congolensis antigen and negative results with the antigens from other bacteria. The whole cell antigens employed were simple to prepare and easy to recognise by microscopy. Cross-reactivity was further tested using the D. congolensis culture whole cell antigen and 3 sera from sheep with bacteriologically confirmed natural infections due to Corynebacterium pseudotuberculosis, Actinomyces pyogenes and Nocardia asteroides. None of these sera showed positive reactions. The authors recommend this technique for serological surveys and research on dermatophilosis.
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