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Related Experiment Videos

Immune system development in the dog and cat.

M J Day1

  • 1Division of Veterinary Pathology, Infection and Immunity, School of Clinical Veterinary Science, University of Bristol, Langford BS40 5DU, UK. m.j.day@bristol.ac.uk

Journal of Comparative Pathology
|June 15, 2007
PubMed
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Puppy and kitten vaccinations are timed to overcome maternal antibodies, allowing their immune systems to respond effectively. Newer vaccines may bypass these maternal antibody interferences, supporting robust immune development.

Area of Science:

  • Veterinary Immunology
  • Neonatal Immunity
  • Vaccinology

Background:

  • Young animals receive passive immunity from colostrum, crucial for early survival.
  • Vaccination timing in puppies and kittens depends on the decline of maternally derived antibodies (MDA).
  • Immune system development involves significant changes in leukocyte populations and cytokine regulation.

Purpose of the Study:

  • To analyze the immunological changes in young animals during their first year of life.
  • To understand the impact of maternally derived antibodies on vaccine efficacy.
  • To inform vaccine design considering the developing immune system.

Main Methods:

  • Analysis of immunoglobulin levels and leukocyte dynamics in young animals.
  • Evaluation of the impact of maternally derived antibodies on immune responses.

Related Experiment Videos

  • Assessment of novel vaccine technologies against MDA interference.

    • Main Results:

    • Maternally derived antibodies (MDA) can inhibit early vaccination responses in puppies and kittens.
    • Newer molecular vaccines show potential to overcome MDA-induced suppression.
    • Significant shifts in T cell (CD4+, CD8+) and B cell populations occur post-birth.
    • Immune regulation shifts from Th2 in utero to Th1 post-neonatally.
    • Breed-specific immune responses are linked to major histocompatibility complex (MHC) genes.

    Conclusions:

    • Vaccine strategies must account for the dynamic immune maturation in young animals.
    • Understanding breed-specific immunity is vital for effective canine vaccination.
    • Advanced vaccine platforms may offer improved protection during critical early life periods.