Histamine Release Induced by Immobilization, Gentle Handling and Decapitation From Mast Cells and Its Inhibition by Nedocromil in Rats
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概要
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The effect of immobilization, gentle handling and decapitation on the level of plasma histamine in Wistar rats was investigated. Mast cell deficient (Ws/Ws) rats were used to characterize the source of elevated histamine in plasma by stress, and the effect of nedocromil, a mast cell stabilizer, on histamine release was assessed in these models in vivo. The plasma histamine concentration of freely moving rats was 93.0±2.3 pmol/ml. Gentle handling produced a transient increase in plasma histamine level by 1.9-fold, whereas immobilization resulted in a longer-lasting elevation by 2.6-fold compared to that in the freely moving rats. Decapitation increased the plasma histamine level by 10- to 16-fold compared with that in the freely moving rats. No increase in plasma histamine was found in Ws/Ws rats exposed to stress. Nedocromil inhibited the increase in plasma histamine level induced by stress in a dose-dependent manner. These findings suggest that stress induces histamine release from mast cells in Wistar rats and the extent of this histamine release increases with the severity of stress. Nedocromil proved to be a good pharmacological tool to inhibit stress-induced release of mediators from mast cells.
- 社団法人 日本薬理学会の論文
著者
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Huang Zhi-li
Department Of Molecular Behavioral Biology Osaka Bioscience Institute
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Huang Zhi-li
Department Of Pharmacology Ehime University School Of Medicine
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Watanabe Hirokazu
Department Of Pharmacology Ehime University School Of Medicine
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Watanabe Hirokazu
Department Of Biochemistry Faculty Of Pharmaceutical Sciences Kanazawa University:(present Address)
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Mochizuki Takatoshi
Department Of Pharmacology Ehime University School Of Medicine
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Maeyama Kazutaka
Department Of Pharmacology Ehime University School Of Medicine
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Watanabe Hirokazu
Department Of Applied Chemistry Nagoya Institute Of Technology
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