Inhibition of MAO activity, 3H-imipramine binding, 3H-paroxetine binding and 3H-5-HT uptake by human cerebrospinal fluid

  • T. Egashira
  • S. Goto
  • F. Murayama
  • Y. Yamanaka
Conference paper
Part of the Journal of Neural Transmission book series (NEURAL SUPPL, volume 32)


Addition of small amount of human cerebrospinal fluid (CSF) inhibited both types of MAO in monkey brain mitochondria. The specific binding of 3H-paroxetine decreased remarkably with increasing CSF volumes, while 3H-imipramine binding was slightly inhibited. Scatchard analysis of 3H-paroxetine binding in the presence and absence of CSF indicated that the inhibitory effect was associated with a decreased Bmax without an appreciable change in Kd. Addition of CSF induced an inhibition of uncompetitive 3H-5-HT uptake to monkey cerebral membranes. These results indicate that the materials in human CSF inhibit 3H-paroxetine binding, and modulate the uptake system for 5-HT.


Scatchard Analysis Serotonin Uptake Monkey Brain Paroxetine Binding Imipramine Binding 


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Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • T. Egashira
    • 1
  • S. Goto
    • 1
  • F. Murayama
    • 1
  • Y. Yamanaka
    • 1
  1. 1.Department of PharmacologyMedical College of OitaHazama-cho, OitaJapan

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