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Department of Physiology, Nagasaki University School of Medicine, Nagasaki, Japan
(Received 2 September 1977)
In the dog, intravenous injection of histamine produces a marked increase in adrenocortical secretion (Suzuki, Hirai, Yoshio, Kurouji & Yamashita, 1963; Papp, Stark, Ács & Varga, 1964; Asano, 1966; Katsuki, Ito, Watanabe, lino, Yuji & Kondo, 1967; Tanigawa, 1967; Narita, 1971; Yamashita, Shimizu, Mieno & Kawao, 1973; Hirose, Matsumoto & Suzuki, 1976; Hirose, Matsumoto, Aikawa & Suzuki, 1977). The adrenocortical response of the dog to histamine was found to be markedly reduced, although not completely eliminated, by hypophysectomy (Hirose et al. 1976, 1977). This indicates that the response, although dependent for the main part on the pituitary gland, may involve a direct effect of histamine on the adrenal cortex or some other extrapituitary factor. In the present study, a direct stimulatory effect of histamine on the adrenal cortex was examined by evaluating the production of cortisol
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