THE ISOLATION OF HIGHLY 5-HYDROXYTRYPTAMINE CONCENTRATED FRACTION FROM RABBIT DUODENAL MUCOUS MEMBRANE HOMOGENATES
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概要
- 論文の詳細を見る
Large amounts of 5-hydroxytryptamine (5-HT) in the mammalian duodenum are found mainly in the enterochromaffin cells. Baker (1) was the first to demonstrate that in the enterochromaffin cells of the dogs duodenal mucosa, 5-HT was stored in large granules which were sedimented in the gravitational field used for the sedimentation of mitochondria. By further equilibrium centrifugation in a sucrose density gradient the granules were partially purified from mitochondria (2). Prusoff (3) reported that even with a two density gradient centrifugation of the mitochondrial fraction succinic dehydrogenase (SDH) activity was still found in the fraction that was rich in 5-HT. Therefore, in this paper an attempt has been made to separate 5-HT storage granules from SDH. Attention has also been given to minimizing damage to the granules during separation. For this purpose urografin density gradients have been employed.
- 社団法人 日本薬理学会の論文
著者
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Segawa Tomio
Department Of Pharmacology Institute Of Pharmaceutical Sciences Hiroshima University School Of Medic
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OKADA Toshikazu
Department of Pharmacology, Faculty of Pharmaceutical Sciences, Kyoto University
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KUME Kayoko
Department of Pharmacology, Faculty of Pharmaceutical Sciences, Kyoto University
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