Mechanism of action of L-leucyl-glycinamide and its effect on Parkinson's disease

Adv Neurol. 1987:45:587-90.

Abstract

PLG potentiates the action of levodopa in 6-OH-DA-treated rats. PLG plus levodopa is more effective than levodopa alone. PLG-treated rats have a decreased concentration of Leu-enkephalin in the caudate nucleus as compared with the control. Preliminary results of using PLG (400 mg/day) for 10 days for treating PD are satisfactory. The mode of action of PLG with relation to dopamine-enkephalin interaction is discussed.

MeSH terms

  • Aged
  • Animals
  • Antiparkinson Agents / therapeutic use*
  • Brain / drug effects
  • Enkephalin, Leucine / metabolism
  • Female
  • Humans
  • Hydroxydopamines / toxicity
  • Levodopa / therapeutic use
  • MSH Release-Inhibiting Hormone / therapeutic use*
  • Male
  • Middle Aged
  • Oxidopamine
  • Parkinson Disease / drug therapy*
  • Parkinson Disease, Secondary / chemically induced
  • Parkinson Disease, Secondary / drug therapy
  • Rats
  • Stereotyped Behavior / drug effects

Substances

  • Antiparkinson Agents
  • Hydroxydopamines
  • Levodopa
  • Enkephalin, Leucine
  • Oxidopamine
  • MSH Release-Inhibiting Hormone