Yutaka Hazeyama

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Potassium (K+) is a vasoactive agent and is released from muscle cells during exercise. A simple diffusion model does not predict the time course of K+ efflux during exercise, which decreases as the exercise progresses. We constructed a mathematical model using the concept of an active Na+-K+ ion pump to account for the decreased efflux during and uptake(More)
The experiments reported here are designed to evaluate the role of potassium (K+) in exercise hyperemia. Desoxycorticosterone acetate was implanted subcutaneously in six dogs, which were then placed on K+-deficient diets. Experiments were performed 3 or 4 wk later. Exercise vasodilation was much reduced in K+-depleted animals. However, when muscle(More)
To clarify magnetic resonance (MR) signal changes during hepatobiliary imaging after oral ingestion of manganese chloride tetrahydrate (Bothdel Oral Solution 10) (MCT). Subjects were an MCT phantom, 10 healthy volunteers and 155 consecutive patients. The phantom study evaluated the relationship between MCT concentration and MR signal intensity. The(More)
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