Antigen-induced protection against infection withToxocara vitulorum larvae in mice (original) (raw)

Abstract

Larvae of_Toxocara vitulorum_ hatched and migrated in the tissues of normal mice. Larvae survived in reasonable numbers, particularly in the liver and, to a lesser extent, in the lungs and kidneys, for at least 4–7 days and in muscles, albeit only in low numbers, for at least 3 weeks. Oral infection of mice on three or more occasions with_T. vitulorum_ eggs induced protection against a challenge infection with eggs of_T. vitulorum_. Prior parenteral immunization of mice with a variety of_T. vitulorum_ soluble antigens (extracts, excretions/secretions, or perienteric fluid and their fractions) from adult parasites and/or infective larvae induced statistically significant protection against infection. The most effective protective immunogens were three or more injections with perienteric fluid from adults (100% protection) and excretions/secretions from infective larvae of_T. vitulorum_ (>92% protection).

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Authors and Affiliations

  1. Faculties of Veterinary Medicine and Animal Science and Zoology, University of Peradeniya, Peradeniya, Sri Lanka
    P. H. Amerasinghe, R. P. V. J. Rajapakse & S. T. Fernando
  2. Department of Clinical Veterinary Medicine, University of Cambridge, Madingley Rd., CB3 OES, Cambridge, UK
    S. Lloyd

Authors

  1. P. H. Amerasinghe
  2. R. P. V. J. Rajapakse
  3. S. Lloyd
  4. S. T. Fernando

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Amerasinghe, P.H., Rajapakse, R.P.V.J., Lloyd, S. et al. Antigen-induced protection against infection with_Toxocara vitulorum_ larvae in mice.Parasitol Res 78, 643–647 (1992). https://doi.org/10.1007/BF00931514

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