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    transplant
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    worn1 posted:
    Dr Stacy
    When they do bone marrow transplants they are checking for compatibillity. Do they perform testing for gene abnormalities such as parkinsons if parkinsons runs in the donors family? I never gave it much thought until the question on transplants.

    Also concerning dyes in medication is there one type of dye that causes reactions more than the others. I know they use different products to produce color varience such as different shades of yellow dye which explains why some cause reactions and some do not.

    w
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    DUKE MEDICINE
    Mark A Stacy, MD responded:
    I had not thought about that either! Cadaver grafts are not genotyped (or checked for genetic risk factors), and organs are evaluated for the potential of donor rejection.

    I do not know why the yellow dye causes a rash - but it is the most commonly prescribed type of levodopa, and maybe the other dyes can (rarely) cause this too.


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