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  • Title: Heterozygote detection in a family of Lapland dogs with a recessively inherited metabolic disease: canine glycogen storage disease type II.
    Author: Walvoort HC, Koster JF, Reuser AJ.
    Journal: Res Vet Sci; 1985 Mar; 38(2):174-8. PubMed ID: 3923581.
    Abstract:
    The control of recessively inherited inborn errors of metabolism may benefit from quantitative biochemical screening assays enabling the identification of heterozygous individuals. Based on the principle of partial enzyme deficiency in heterozygotes, an attempt was made to identify heterozygous animals in a Lapland dog family with canine glycogen storage disease type II (acid alpha-glucosidase deficiency). Acid alpha-glucosidase activity was determined in peripheral blood leucocyte extracts of 12 related Lapland dogs, two of which were obligate heterozygotes. The use of an antiserum against acid alpha-glucosidase was necessary to increase the specificity of the assay. Twice the obligate heterozygous enzyme level was assumed to indicate the homozygous normal level. Five dogs were designated as presumptive heterozygotes, and five as presumptive normal homozygotes. The results in two dogs were inconclusive. The information obtained in this preliminary investigation may be helpful in the control of the disease in the Lapland dog breed.
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