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  • Title: Hereditary high-potassium erythrocytes with high Na, K-ATPase activity in Japanese shiba dogs.
    Author: Maede Y, Amano Y, Nishida A, Murase T, Sasaki A, Inaba M.
    Journal: Res Vet Sci; 1991 Jan; 50(1):123-5. PubMed ID: 1646472.
    Abstract:
    The sodium (Na) and potassium (K) concentrations and Na, K-ATPase activity were examined in erythrocytes from 24 Japanese shiba dogs and 79 dogs of 24 other breeds. Eleven of the shibas had erythrocytes with high K and low Na concentrations, together with high Na, K-ATPase activity (HK RBCs), while red cells from the remaining shibas and all of the other breeds examined showed low K and high Na concentrations, with no enzyme activity (LK RBCs). The concentration of reduced glutathione in HK RBCs was about five times that in LK RBCs. All the findings from HK shibas were in good agreement with those from HK mongrel dogs found in Japan previously. Since the shiba is a Japanese breed of dog, the results of the present study strongly suggest that the gene for HK RBCs may be inherent in dogs indigenous to Japan, particularly in shiba dogs.
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