Parkinsonism-Preventing Activity of 1-Methyl-1,2,3,4-tetrahydroisoquinoline Derivatives in C57BL Mouse in Vivo

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Author(s)

Abstract

1-Methyl-1,2,3,4-tetrahydroisoquinoline (1MeTIQ), an endogenous parkinsonism-preventing substance, and its 5-, 6-, and 7-hydroxylated derivatives are reported to show <i>in vitro</i> neuroprotective activity against toxicity due to salsolinol in SH-SY5Y human neuroblastoma cells. In the present study, we tested the parkinsonism-preventing potential of these derivatives by means of the pole test in C57BL mice <i>in vivo</i>, and measured brain dopamine contents by liquid chromatography-tandem mass spectrometry. Parkinsonism was induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydroisoquinoline(MPTP), and pretreatment with any of the 1MeTIQ derivatives prevented its induction. 6-Hydroxy-1MeTIQ showed the greatest preventive activity. The amount of dopamine in the brain was reduced by MPTP treatment, and this reduction was suppressed by pretreatment with 1MeTIQ derivatives. These hydroxy-1MeTIQ derivatives may have potential for the treatment of Parkinson's disease as well as 1MeTIQ itself.

Journal

  • Biological and Pharmaceutical Bulletin

    Biological and Pharmaceutical Bulletin 29(7), 1401-1403, 2006-07-01

    The Pharmaceutical Society of Japan

References:  23

Codes

  • NII Article ID (NAID)
    110005602310
  • NII NACSIS-CAT ID (NCID)
    AA10885497
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    09186158
  • NDL Article ID
    7960510
  • NDL Source Classification
    ZS51(科学技術--薬学)
  • NDL Call No.
    Z53-V41
  • Data Source
    CJP  NDL  NII-ELS  J-STAGE 
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