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[A method for developing hereditary deficiency of complement component in the rabbit].

M Komatsu

    Jikken Dobutsu. Experimental Animals
    |April 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

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    Selective breeding in rabbits successfully developed hereditary deficiencies in complement components, specifically C8 and C6. This study estimated the realized heritability of total hemolytic complement activity (CH50) to be approximately 0.3.

    Area of Science:

    • Immunogenetics
    • Animal Breeding
    • Complement System Biology

    Context:

    • The complement system is crucial for innate immunity.
    • Hereditary deficiencies in complement components increase susceptibility to infections.
    • Understanding the heritability of complement activity is vital for breeding programs.

    Purpose:

    • To develop hereditary deficiencies of complement components in a rabbit colony.
    • To estimate the realized heritability (h2) of total hemolytic complement activity (CH50).
    • To assess the effectiveness of selective breeding for complement deficiency.

    Summary:

    • A two-way selective experiment on New Zealand White rabbits focused on CH50.
    • Mean CH50 was 9.0 +/- 0.2 U/ml, with individual differences being stable.

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  • Realized heritability of CH50 was estimated at ~0.3. Two rabbits with hereditary C8 alpha-gamma deficiency and five with C6 deficiency were identified, with gene frequencies estimated at 0.005 and 0.003 respectively.

    • Impact:

    • Demonstrates that downward selection for CH50 is effective in creating hereditary complement deficiencies.
    • Provides valuable insights into the genetic basis of complement activity in rabbits.
    • Establishes a rabbit model for studying the functional consequences of complement component deficiencies.