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Effects of human recombinant interleukin-2 on resistance, and on the humoral and cellular response of rabbits infested with adult Ixodes ricinus ticks

Veterinary Parasitology, ISSN: 0304-4017, Vol: 54, Issue: 4, Page: 375-387
1994
  • 10
    Citations
  • 0
    Usage
  • 10
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    10
    • Citation Indexes
      10
  • Captures
    10

Article Description

Rabbits were treated with subcutaneous injections of ten doses of 5 × 10 3 units of human recombinant interleukin-2 (IL-2) during a first infestation with five adult pairs Ixodes ricinus per rabbit, while untreated controls were infested by either five (direct control) or 25 pairs (resistant control) per rabbit. During the second infestation with 25 pairs per rabbit in each group, rabbits treated with IL-2 became more resistant than the rabbits in the two untreated control groups. Stronger resistance was manifested by lower engorgement and egg laying weights, and by smaller numbers of normally fed or ovipositioning ticks. IL-2 treatment had no significant effects on the rabbit anti-tick antibody production and the lymphocyte proliferation to a salivary gland extract (SGE). By contrast. the highest cutaneous responses to SGE were observed in the IL-2 treated group. IL-2 may increase rabbit cell-mediated immunity, and stimulate an increase in the production of memory cells during the induction phase of the immune response (first infestation), allowing the development of a strong resistance in lightly infested rabbits.

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