Melatonin Inhibits the Central Sympatho-adrenomedullary Outflow in Rats

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Central effects of melatonin on the sympatho-adrenomedullary outflow were investigated in urethane-anesthetized rats. In the intact animals, intracerebroventricularly (i.c.v.) administered interleukin-1β (IL-1β) (100 ng/animal) slightly, but significantly, elevated the plasma level of noradrenaline (NA), but not the level of adrenaline (Ad). Melatonin (100 βg/animal, i.c.v.) did not modulate the effects of IL-1β on plasma levels of catecholamines. In the pinealectomized animals, however, the same dose of IL-1β markedly elevated plasma levels of both Ad and NA, and the elevation of Ad was more potent than that of NA. In these pinealectomized animals, the serum level of melatonin was significantly lower than that in the sham-operated control animals. Furthermore, the IL-1β-induced elevations of plasma catecholamines in these pinealectomized animals were attenuated by i.c.v. administered melatonin. These results suggest that melatonin plays an inhibitory role in the central regulation of sympatho-adrenomedullary outflow in rats.

収録刊行物

  • The Japanese journal of pharmacology

    The Japanese journal of pharmacology 81(1), 29-33, 1999-09

    The Japanese Pharmacological Society

参考文献:  22件中 1-22件 を表示

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各種コード

  • NII論文ID(NAID)
    10008196076
  • NII書誌ID(NCID)
    AA00691188
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00215198
  • NDL 記事登録ID
    4867777
  • NDL 雑誌分類
    ZS51(科学技術--薬学)
  • NDL 請求記号
    Z53-D199
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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