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Frequency of involvement of pox virions in lesions of bovine dermatophilosis

Frequence De La Participation De Virions Pox Dans Les Lesions De Dermatophilose Bovine

Frecuencia Del Compromiso De Viriones Pox En Lesiones De Dermatiofilosis Bovina

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Summary

By combined electron microscopical and serological methods the rate of involvement of pox virions within lesions of bovine natural dermatophilosis was determined. Scabby lesions of 40 (77%) out of a total of 52 cases were positive for the virions, while sera of all infected animals which reacted positively for pox viral antibodies (LSD) was significantly higher (P<0·001) in comparison to those of healthy-appearing animals. The virions in all cases had a uniform oval to cylindrical morphology with a mean measurement of 110 × 280 nm. A synergistic interplay involving the initiation of the scabby lesions by the virions and their subsequent trapping within keratin deposits, followed by their release through the keratolytic activity ofDermatophilus congolensis appear to have obtained in cases.

Résumé

Par utilisation combinée de méthodes sérologiques et de microscopie électronique, on a pu déterminer la fréquence de participation de virions pox dans les lésions de dermatophilose bovine naturelle. Les lésions croûteuses de 40 (77%) cas sur 52 ont été positives pour les virions, tandis que les sérums de tous les animaux qui réagissent positivement pour les anticorps antiviraux pox (LSD) sont significativement supérieurs (P<0,001) comparés à ceux des animaux apparemment en bonne santé. Dans tous les cas, les virions ont une morphologie uniforme ovale à cylindrique, avec une taille moyenne de 110 × 280 nm. On a pu obtenir dans certains cas une interaction synergique, mettant en jeu l'initiation de lésions croûteuses par les virions et leur piégeage ultérieur dans les dépôts kératinisés, suivi de leur relargage dû à l'activité kératinolytique deDermatophilus congolensis.

Resumen

Se determinó la tasa del compromiso de viriones pox, con lesiones de dermatofilosis bovina natural, mediante la combinación de microscopía electrónica y serológica. Cuarenta lesiones costrosas (77%) de un total de 52 casos fueron positivas a viriones, mientras que el suero de todos los animales infectados que reaccionaron positivamente para anticuerpos pox (LSD) fueron significativamente más altos (P<0.001) en comparación a aquellos de animales aparentemente sanos. Los viriones en todos los casos tuvieron una morfología uniforme, de oval a cilíndrica con una media de 110 × 280 nm. Se obtuvo un sinergismo recíproco que involucró la iniciación de las lesiones costrosas por los viriones, los cuales quedaron atrapados subsecuentemente en los depósitos de queratina, seguido de la liberación de los mismos a través de la acción queratolítica delDermatophilus congolensis.

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References

  • Abu-Samra, M. T. (1978).Zentralblatt-für Veterinärmedizin,25B, 641–651.

    Google Scholar 

  • Abu-Samra, M. T. &Walton, G. S. (1981).Journal of Comparative Pathology,91, 317–329.

    Google Scholar 

  • Albrecht, R., Horowitz, S., Gilbert, E., Hong, R., Richard, J. &Connor, D. H. (1974).Paediatrics,53, 907–912.

    Google Scholar 

  • Egerton, T. R. (1964).Australian Veterinary Journal,40, 147.

    Google Scholar 

  • Hudson, T. R. (1937). Proceedings ofRoyal Society of Medicine,30, 1456–1460.

    Google Scholar 

  • Isitor, G. N. (1984). The keratinized layers as an ideal region for TEM localization of micro-organisms in bovine dermatitis. Proceedings of 42nd Annual Meeting of Electron Microscopy Society America, pp 186–187.

  • Isitor, G. N., Dellmann, H. D., Adegboye, D. S., Ezeokoli, C. D. &Chineme, C. N. (1984).Tropical Veterinarian,2, 183–189.

    Google Scholar 

  • Isitor, G. N. &Adegboye, D. S. (1986).Tropical Veterinarian,4, 15–23.

    Google Scholar 

  • Kluge, J. P., Cheville, N. F. &Perry, T. M. (1972).American Journal of Veterinary Research,33, 1191–1196.

    Google Scholar 

  • Munz, E. A. (1976).Dermatophilus infection in animals and man, (Eds. D. Lloyd and K. Sellers). Academic Press, London, pp 57–65.

    Google Scholar 

  • Oduye, O. O. (1975).World Animal Review,16, 13–17.

    Google Scholar 

  • O'Hara, P. J. &Cordes, D. O. (1963).New Zealand Veterinary Journal,11, 151–154.

    Google Scholar 

  • Plowright, W. (1956).Veterinary Record,68, 350–355.

    Google Scholar 

  • Plowright, W. &Ferris, R. D. (1959).Veterinary Record,71, 718–724.

    Google Scholar 

  • Roberts, D. S. (1967).Veterinary Bulletin,37, 513–521.

    Google Scholar 

  • Smith, C. F. &Cordes, D. O. (1972).British Veterinary Journal,128, 366–371.

    Google Scholar 

  • Van Saceghem, R. (1915).Bulletin of Agriculture, Congo Belge,8, 354–359.

    Google Scholar 

Download references

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Isitor, G.N., Kazeem, H.M., Njoku, C.O. et al. Frequency of involvement of pox virions in lesions of bovine dermatophilosis. Trop Anim Health Prod 20, 2–10 (1988). https://doi.org/10.1007/BF02239635

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  • DOI: https://doi.org/10.1007/BF02239635

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