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Mechanisms of non-adrenergic sympathetic regulation of peripheral metabolism.

Research Project

Project/Area Number 62480128
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field General medical chemistry
Research InstitutionEhime University

Principal Investigator

SHIMAZU Takashi  Ehime University, School of Medicine, Professor, 医学部 (30090400)

Co-Investigator(Kenkyū-buntansha) MINOKOSHI Yasuhiko  Ehime University, School of Medicine, Assistant Professor, 医学部, 助手 (10200099)
TAKAHASHI Akira  Ehime University, School of Medicine, Assistant Professor, 医学部, 助手 (40171467)
Project Period (FY) 1987 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥6,800,000 (Direct Cost: ¥6,800,000)
Fiscal Year 1989: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1988: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1987: ¥4,600,000 (Direct Cost: ¥4,600,000)
KeywordsSympathetic nerve / Non-adrenergic sympathetic regulation / Liver phosphorylase / alpha-and beta-Adrenergic blockers / Brown adipocytes / Fatty acid synthesis / 神経ペプチド / α,βブロッカー / グアネチジン / 代謝調節 / 肝ホスホリラーゼ
Research Abstract

Although sympathetic neural regulation of metabolism is considered to be mediated by the sympathetic neurotransmitter noradrenaline, recent evidence has suggested that a non-adrenergic transmission is also involved in this metabolic regulation. With the use of hepatic nerve-liver preparation perfused in situ, for instance, electrical stimulation of the post-ganglionic sympathetic nerve fibers results in rapid increases in phosphorylase a activity and glucose output from the liver, and this effect of sympathetic nerve stimulation on hepatic glycogenolysis can be only partially prevented by the presence of both the alpha-adrenergic blocking agent phenoxybenzamine and tile beta-antagonist propranblol. In an attempt to isolate a factor that may mediate the non-adrenergic sympathetic activation of liver phosphorylase, we purified this factor from the celiac ganglia and identified it as adenosine. In addition, it was found that prostaglandins are also involved in the neural activation of hep … More atic glycogenolysis.
The second approach of this research project is to establish the mechanism of nonadrenergic mediation of sympathetic nerve effect on brown adipose tissue (BAT) lipogenesis. It was shown that electrical stimulation, in bursts, of the sympathetic nerves entering the interscapular BAT caused a marked increase in the rate of fatty acid synthesis. However, this effect of sympathetic nerve stimulation in bursts could not be prevented at all by alpha- and beta- adrenergic blockade. Infusion of noradrenaline could also not mimic the sympathetic nerve effect on fatty acid synthesis. Moreover, intermittent electrical stimulation of tile sympathetic nerves could not increase the rate of glyceride glycerol synthesis, but it induced a paradoxical increase in the rate of fatty acid; synthesis after combined alpha-and beta-adrenergic blockade. These results indicate that noradrenaline seem not to mediate the lipogenic action of sympathetic nerve. In a search for identifying a factor responsible for the non-adrenergic sympathetic activation of BAT lipogenesis, we developed an assay system with a suspension of brown adipocytes and tested a variety of neuropeptides and other substances for their activity in stimulating fatty acid synthesis; none of these substances were effective for fatty acid synthesis. However, a partially purified extract from the rat hypothalamus was found to contain a neural factor that stimulates fatty acid synthesis of brown adipocytes. Less

Report

(4 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • 1987 Annual Research Report
  • Research Products

    (35 results)

All Other

All Publications (35 results)

  • [Publications] Shimazu,T.: "Neuronal regulation of hepatic glucose metabolism in mammals." Diabetes/Metabolism Reviews. 3. 185-206 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Minokoshi,Y.,Saito,M.and Shimazu,T.: "Sympathetic activation of lipid synthesis in brown adipose tissue in the rat." J.Physiol.398. 361-370 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Takahashi,A.& Shimazu,T.: "Effects of vagotomy and sympathectomy on diurnal fluctuation of 3-hydroxy-3-methylglutaryl CoA reductase activity in rat liver." Biomed.Res.9. 127-131 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Saito,M.,Minokoshi,Y.and Shimazu,T.: "Accelerated norepinephrine turnover in peripheral tissues after ventromedial hypothalamic stimulation in rats." Brain Res.481. 298-303 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Minokoshi,Y.,Saito,M.and Shimazu,T.: "Adrenergic blockade paradoxically increases lipogenic response of brown adipose tissue to sympathetic nerve stimulation." Neuroscience Lett.in press. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Watanabe,Y.,Takahashi,A.and Shimazu,T.: "Neural control of biosynthesis and secretion of serum transferrin in perfused rat liver." Biochem.J.(in press). 267. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 嶋津孝,斉藤昌之: "神経と代謝調節" 朝倉書店, 1-360 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 嶋津孝,他: "内分泌におけるα受容体" Excerpta Medica, 7-23 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Shimazu, T.: "Neuronal regulation of hepatic glucose metabolism in mammals." Diabetes/Metabolism Reviews, 3, 185-206, 1987.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Minokoshi, Y., Saito, M. and Shimazu, T.: "Sympathetic activation of lipid synthesis in brown adipose tissue in the rat." J. Physiol., 398, 361-370, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Takahashi, A. and Shimazu, T.: "Effects of vagotomy and sympathectomy on diurnal fluctuation of 3-hydroxy-3-methylglutaryl CoA reductase activity in rat liver." Biomed. Res., 9, 127-131, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Saito, M., Minokoshi, Y. and Shimazu, T.: "Accelerated norepinephrine turnover in peripheral tissues after ventromedial hypothalamic stimulation in rats." Brain Res., 481, 298-303, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Minokoshi, Y., Saito, M. and Shimazu, T.: "Adrenergic blockade paradoxically increases lipogenic response of brown adipose tissue to sympathetic nerve stimulation." Neuroscience Lett., 1990.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Watanabe, Y., Takahashi, A. and Shimazu, T.: "Neural control of biosynthesis and secretion of serum transferrin in perfused rat liver." Biochem. J., 267, 1990.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Minokoshi,Y.,Saito,M.and Shimazu,T.: "Adrenergic blockade paradoxically increases lipogenic response of brown adipose tissue to sympathetic nerve stimulation" Neuroscience Lett.in press. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] Watanabe,Y.,Takahashi,A.and Shimazu,T.: "Neural control of biosynthesis and secretion of serum transferrin in perfused rat liver" Biochem.J.267. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] Abe,M.,Saito,M.and Shimazu,T.: "Neuropeptide Y in the specific hypothalamic nuclei of rats treated neonatally with monosodium glutamate" Brain Res.Bull. 24. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] Saito,M.,Minokoshi,Y.and Shimazu,T.: "Accelerated norepinephrine turnover in peripheral tissues after ventromedial hypothalamic stimulation in rats" Brain Res. 481. 298-303 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Abe,M.,Saito,M.and Shimazu,T.: "Neuropeptide Y and norepinephrine injected into the paraventricular nucleus of the hypothalamus activate endocrine pancreas" Biomed.Res. 10. 431-436 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Saito,M.,Minokoshi,Y.and Shimazu,T.: "Metabolic and sympathetic nerve activities of brown adipose tissue in tube-fed rats" Amer.J.Physiol. 257. E374-E378 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 嶋津孝 他: "内分泌におけるα受容体" Excerpta Medica, 7-23 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 井口昭久,嶋津孝 他: "内科生化学入門" 医歯薬出版, 33-51 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Y.Minokoshi;M.Saito;T.Shimazu: Journal of Physiology. 398. 361-370 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] A.Takahashi;T.Shimazu: Biomedical Research. 9. 127-131 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] M.Iwai;T.Shimazu: Life Sciences. 42. 1833-1840 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] N.S.Hell;M.Iwai;T.Shimazu: Physiology & Behavior. 43. 383-387 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] N.Ogawa;Y.H.Sora;M.Saito;T.Shimazu: Brain Research. 451. 115-118 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] A.Takeda;M.Kanoh;T.Shimazu;N.Takeuchi: Journal of Biochemistry. 104. 901-907 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 嶋津孝,斉藤昌之: "神経と代謝調節" 朝倉書店, 1-360 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 嶋津孝: "講座プロスタグランジン 5.脳と神経" 化学同人, 277-290 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] T.Shimazu: Diabetes/Metabolism Reviews. 3. 185-206 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] M.Saito;Y.Minokoshi;T.Shimazu: Life Sciences. 41. 193-197 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] A.Takeda;E.Hashimoto;H.Yamamura;T.Shimazu: FEBS Letters. 210. 169-172 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] M.Iwai;N.S.Hell;T.Shimazu: Pflugers Archiv European Journal Physiology. 410. 44-47 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 嶋津孝他: "The New Horizons-from Cancer Research to Biomedical Sciences" 大阪大学医学部付属バイオメディカル教育研究センター腫瘍医学部門, 139 (1987)

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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