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  • Title: Abnormal erythrocyte Na, K-ATPase activity in a northeastern Thai population.
    Author: Tosukhowong P, Chotikasatit C, Tungsanga K, Sriboonlue P, Prasongwattana V, Pansin P, Sitprija V.
    Journal: Southeast Asian J Trop Med Public Health; 1992 Sep; 23(3):526-30. PubMed ID: 1336901.
    Abstract:
    We studied the cellular membrane enzyme responsible for potassium transport in different Thai populations. We measured plasma and intraerythrocytic concentrations of sodium and potassium, activities of erythrocytic membrane Na, K-activated adenosine triphosphatase (Na, K-ATPase), ouabain-insensitive ATPase, total ATPase and the activity ratio of Na, K-ATPase/total ATPase in 25 healthy blood donors at Khon Kaen University Hospital, Khon Kaen (group 1), and in 32 donors at the National Blood Center, Thai Red Cross Society, Bangkok (group 2). Group 1 subjects had significantly higher concentrations of erythrocyte sodium (p < 0.001) and lower activity of Na, K-ATPase (p < 0.001) than group 2. When data of these 2 groups were combined, erythrocyte Na+ correlated inversely with Na, K-ATPase and the activity ratio of Na, K-ATPase/total ATPase. Our study suggests that there is a defect in membrane transport enzymes for sodium/potassium in certain northeast Thai populations.
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