, Volume 94, Issue 1, pp 74–78 | Cite as

Piracetam elevates muscarinic cholinergic receptor density in the frontal cortex of aged but not of young mice

  • H. Pilch
  • W. E. Müller
Original Investigations


Chronic treatment (2 weeks) with piracetam (500 mg/kg, once daily PO) elevatedm-cholinoceptor density in the frontal cortex of aged (18 months) female mice by about 30–40%, but had no effect onm-cholinoceptor density in the frontal cortex of young (4 weeks) mice. The effect of piracetam onm-cholinoceptor density as determined by the specific binding of tritiated QNB was not affected by concomitant daily treatment with either choline (200 mg/kg) or scopolamine (4 mg/kg). It is concluded that the effect of piracetam onm-cholinoceptor density could explain the positive effects which have been reported for combinations of cholinergic precursor treatment with piracetam on memory and other cognitive functions in aged experimental animals and patients and could also represent part of the possible mechanism of action of piracetam alone.

Key words

Piracetam Choline m-Cholinoceptor density Frontal cortex 


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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • H. Pilch
    • 1
  • W. E. Müller
    • 1
  1. 1.Psychopharmacological LaboratoryCentral Institute of Mental HealthMannheimFederal Republic of Germany

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