Table 8

Other mechanisms of action

StudyDesign (n)Age, yr*Male, %ProtocolDrug (dose)TMS targetMechanism of actionEffect
Healthy participants
Heidegger et al. (82)C/O (10)21–3060PAS(N20)+2msLevetiracetam (3000 mg)M1SV2A bindingReduced LTP-like
Heidegger et al. (82)C/O (10)21–3060PAS(N20)+2msPiracetam (3600 mg)M1UnknownReduced LTP-like
NF1
Mainberger et al. (91)Parallel (11)28 (17–44)54.54PAS25Lovastatin (200 mg) single doseM1HMG-CoA inhibitionNo Effect
Mainberger et al. (91)Parallel (11)28 (17–44)54.54PAS25Lovastatin (200 mg), 4 daily dosesM1HMG-CoA inhibitionIncreased LTP-like
  • C/O = crossover; HMG-CoA = 3-hydroxy-3-methylglutaryl-coenzyme A; LTP = long-term potentiation; M1 = motor cortex; NF1 = neurofibromatrosis type 1; PAS = paired associative stimulation; SV2A = synaptic vesicle glycoprotein 2A; TMS = transcranial magnetic stimulation.

  • * Data are expressed as a mean with a range or as a range.