Effects of the electrical stimulation of the mammary nerve on oxytocin and luteinizing hormone secretion in anesthetized rats.

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  • MAEDA Kei-ichiro
    Laboratory of Reproductive Physiology, School of Agriculture, Nagoya University
  • OHKURA Naganari
    Laboratory of Reproductive Physiology, School of Agriculture, Nagoya University
  • UCHIDA Emi
    Laboratory of Reproductive Physiology, School of Agriculture, Nagoya University
  • TSUKAMURA Hiroko
    Laboratory of Reproductive Physiology, School of Agriculture, Nagoya University
  • YOKOYAMA Akira
    Laboratory of Reproductive Physiology, School of Agriculture, Nagoya University

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Other Title
  • 乳腺神経の電気刺激が雌ラットのオキシトシン及び性腺刺激ホルモン分泌に及ぼす効果
  • 乳腺神経の電気刺激が雌ラットのオキシトシン及び性腺刺激ホルモン分泌に及ぼす効果〔英文〕
  • ニュウセン シンケイ ノ デンキ シゲキ ガ メス ラット ノ オキシトシン

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Abstract

Effects of the electrical stimulation of the mammary nerve on oxytocin (OT) and luteinizing hormone (LH) secretion in anesthetized lactating rats were examined. The electrical stimulation of the mammary nerve as well as the saphenous and the median nerve increased the plasma OT concentration in both lactating and cycling rats under urethane anesthesia. All groups of rats stimulated with these nerves showed a very similar pattern of OT release which was different from those observed in lactating rats suckled by pups. The electrical stimulation of the mammary nerve decreased the plasma LH concentration in ovariectomized lactating rats that had been deprived of their pups for 24 hr compared with the concentration obtained after the stimulation of the saphenous nerve. The possibility still remains that the electrical stimulation of the mammary nerve could be used as a substitute for the suckling stimulus.

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