CANINE HEALTH FOUNDATION GRANT 305

CALL FOR PARTICIPANTS

 
  • Abstract
  • Participation Criteria
  • Consent Form
  • DNA Sampling
  • Wayne Potts Laboratory has been funded by the Canine Health Foundation to study the relationship between major histocompatability alleles and the following auto-immune diseases in canines: immune mediated hemolytic anemia, diabetes and immune mediated thyroiditisis. We are currently seeking candidate animals for participation in this study. If your dog is purebred and has any of the aforementioned diseases it may qualify for this study. Please carefully review the following criteria for study participation. If your animal is a potential candidate, please print out a copy of the Consent Form , have it filled out by your veterinarian and returned to:

    
    Wayne Potts Canine Health Study
    Department of Biology
    University of Utah
    257 South 1400 East
    Salt Lake City, Utah   84112

    We will review your consent form, and if your dog is deemed qualified for participation in this study, you will be sent a home DNA sample collection kit. Click here for more information about DNA sample collection.

    If you would like more information about this study please feel free to read the study abstract.

    Thank you for your interest.

     

    PARTICIPATION CRITERIA

    Your dog must be purebred and have a positive diagnosis for one of the following diseases:

    Immune mediated hemolytic anemia:

    Your dog must test positive for the disease for EACH of the following three tests:

    1. Auto Agglutination of RBC
    2. Direct Coomb’s Test
    3. Spherocytosis of RBC

    Immune mediated thyroiditis:

    Your dog must be positive for the disease state for BOTH tests.

    1. Low Total/Free T4 by ED; positive result is indicated by a LOW value
    2. Thyroglobulin auto-antibodies

    It is possible that your dog has been diagnosed with thyroiditis with out having been tested for thyroglobulin auto-antibodies. The presence of thyroglobulin auto-antibodies is the definative test for immune mediated thyroiditis. Because this disease can have multiple causes, for the purposes of this study we can only accept participants that have tested positive for thyroglobulin auto-antibodies; indicating that the disease is immune mediated.

    Diabetes:

    Your dog should have a high fasting blood sugar. The normal range for this test is 70-120ug/ml, values of 110 – 120 are considered borderline. To participate in this study your dog must have a fasting blood sugar measurement in excess of 120ug/ml

     

    ABSTRACT

    Autoimmune diseases cause significant amounts of mortality and debilitating disease in dogs. In humans many autoimmune diseases occur only in individuals expressing one of the few predisposing histocompatibility genes. For example, all cases of type I diabetes in humans are associated with only a few of the many allelic forms of class II histocompatibility genes. Consequently, if the frequencies of these few alleles were reduced by half, the incidence of diabetes would be reduced by half. Here we propose to characterize histocompatibility susceptibility alleles for three major, heritable canine autoimmune diseases - diabetes, immune-mediated thyroiditis and immune-mediated hemolytic anemia. If any of these three debilitating (or lethal) autoimmune diseases have a restricted number of susceptibility alleles it will allow: (1) development of diagnostic tests for identifying individuals at risk for prophylactic therapy and research and (2) reducing the incidence of the disease by reducing the breeding of individuals carrying the predisposing histocompatibility alleles. For each of the three autoimmune diseases, we propose to collect DNA samples from approximately 100 purebred dogs diagnosed with the disease. Histocompatibility genes will be cloned and sequenced for each dog for a total of approximately 1100 sequences. Histocompatibility alleles will be tested for significant associations with each of the autoimmune diseases.

     

    DNA SAMPLE COLLECTION

    We use a simple cheek swab method for DNA collection that may be performed at home by the dog owner. This is a routine procedure for DNA sample collection and presents effectively no risk to your dog.

    Collection and Shipping Instructions for Canine Cheek Cell Samples:

    *Important note: all envelopes, cytology brush wrappers, and consent forms are pre-numbered to prevent sample misidentification. Prevention of such misidentification will most effectively be achieved if all collection for a given patient is fully complete before opening another packet and collecting from the next patient.

    1. Remove brush from wrapper. DO NOT THROW AWAY WRAPPER!
    2. Brush the inside of the cheek vigorously for 15 seconds, rotating brush.
    3. Obtain three swabs from the inside of both the left and right sides of the mouth.
    4. Let swab air dry for a minimum of 5-10 minutes.
    5. Replace brushes in wrappers and return them to the sample packet envelope Please mail immediately upon completion.