Does triiodothyronine stimulate red blood cell sodium potassium pump?
['reduction in Na+,K+ATPase activity has been demonstrated in red blood cells (RBCs), as well as an inverse correlation between this enzymatic action and free triiodothyronine (FT3) levels.', 'The restoration of normal FT3 values also brings about a normalization of Na+,K+ATPase activity in erythrocytes.', 'at hyperthyroid patients have decreased red cell Na/K-ATPase activity and provide direct evidence that erythrocyte ATPase activity is increased in hypothyroid patients. The change in enzyme activity in patients with nonthyroidal illness and decreased circulating T3 levels was comparable to that in hypothyroidism.', 'The effect of triiodothyronine (T3) on Na+,K(+)-ATPase activity of K562 human erythroleukemic cell was studied to understand why the erythrocyte sodium pump activity is decreased in hyperthyroidism.', 'We conclude that T3 stimulates Na+,K(+)-ATPase activity of K562 cells and in the presence of T3 during differentiation, the enzyme activity remains high.']
['An inverse correlation between this enzymatic action and free triiodothyronine (FT3) levels.\nThe effect of triiodothyronine (T3) on Na+,K(+)-ATPase activity in red blood cells may be different in vivo and in vitro.']
['no']