Studies of myofibrillar ATPase in ragweed-sensitized canine pulmonary smooth muscle |
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Authors: | S K Kong R P Shiu N L Stephens |
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Abstract: | The maximal shortening velocities of tracheal and pulmonary vascular smooth muscle from ragweed-sensitized dogs were significantly higher than those of muscles from their littermate controls. Myofibrils of tracheal and pulmonary vascular smooth muscle from ragweed-sensitized and control dogs were obtained with use of Triton X-100 homogenizing solution. The myofibrillar adenosinetriphosphatase (ATPase) activities of the sensitized tissues were significantly higher (P less than 0.05) than those of their respective controls. |
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