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L-deprenyl: nitric oxide production
and dilation of cerebral blood vessels


Thomas T, McLendon C, Thomas G

Woodlands Medical and Research Center,
Oldsmar, FL 45677, USA.
Neuroreport 1998 Aug 3; 9(11):2595-600

ABSTRACT

The monoamine oxidase-B inhibitor L-deprenyl (Selegiline) is effective in treating Parkinson's disease and possibly Alzheimer's disease.  The neuroprotective property of L-deprenyl may be unrelated to the inhibition of monoamine oxidase-B.  Since nitric oxide (NO) modulates activities including cerebral blood flow and memory, we examined the effect of L-deprenyl on NO. L-Deprenyl induced rapid increases in NO production in brain tissue and cerebral vessels. Vasodilation was produced by endothelial NO-dependent as well as NO-independent mechanisms in cerebral vessels. The drug also protected the vascular endothelium from the toxic effects of amyloid-beta peptide.  These novel actions of selegiline may protect neurons from ischemic or oxidative damage and suggest new therapeutic applications for L-deprenyl in vascular and neurodegenerative diseases.
  • Deprenyl  in the treatment of Alzheimer's disease
  • Deprenyl  MAO-B inhibitors in the treatment of Alzheimer's disease
  • Deprenyl  for Alzheimer's disease
  • Deprenyl  stimulates biosynthesis of cytokines interleukin-1 & 6
  • Deprenyl  and age-related decline of the striatal dopaminergic system
  • Deprenyl  improves memory in amnesic Alzheimer's patients
  • Deprenyl  treatment of behavioral symptoms of Alzheimer's disease
  • Deprenyl   increases life span in Parkinson's patients
  • Deprenyl   possible mechanisms of action in Parkinson's disease
  • Deprenyl   effect on arm movement in early Parkinson's
  • Deprenyl   effect on cognitive functions in early Parkinson's 
  • Deprenyl   possible mechanisms of action in Parkinson's
  • Deprenyl   depression in Parkinson's disease
  • Deprenyl   improves visuo-motor control in early Parkinsonism
  • Deprenyl   management of early Parkinson's disease
  • Deprenyl   delays the onset of disability in Parkinsonian patients
  • Deprenyl   and tocopherol antioxidative therapy of Parkinsonism
  • Deprenyl   treatment and death of nigral neurons in Parkinson's disease.
  • Deprenyl   rationale for deprenyl medication in Parkinson's disease
  • Deprenyl   and levodopa in Parkinson's disease
  • Deprenyl   is an MAO-B inhibitor
  • Deprenyl   facilitates neuronal growth without inhibiting monoamine oxidase
  • Deprenyl   pharmacology
  • Deprenyl   biochemical actions
  • Deprenyl   effect of MAO-B inhibitors on MPP+ toxicity
  • Deprenyl   the history of its development
  • Deprenyl   protects neurons against neurotoxins
  • Deprenyl   in neurodegenerative disorders
  • Deprenyl   enhances the release of dopamine
  • Deprenyl   plus L-phenylalanine in the treatment of depression
  • Deprenyl   in the treatment-resistant of older depressive patients
  • Deprenyl   effects in atypical depressives
  • Deprenyl   up-regulates superoxide dismutase and catalase
  • Deprenyl   immunostimulant
  • Deprenyl   pharmacology
  • Deprenyl   effect on rat longevity and sexual acitivity
  • Deprenyl   effects of experimental cocaine administration
  • Deprenyl   effects on longevity in animals
  • Deprenyl   effects on subjective ratings of cocaine-induced euphoria
  • Deprenyl   increases the life span in Fischer rats
  • Deprenyl   effects on short term memory in young and aged dogs
  • Deprenyl   the facilitation of dopaminergic activity in the aged brain
  • Deprenyl   fluoxetine (Prozac) and deprenyl
  • Deprenyl   improves cardiac sympathetic terminal function in heart failure
  • Deprenyl   effect on dopamine concentration in the striatum of a primate
  • Deprenyl   a review of the pharmacology
  • Deprenyl   restores IGF-1 levels to young levels
  • Deprenyl   prolongs life in elderly dogs
  • Deprenyl   past, present, and future
  • Deprenyl   relevance to humans
  • Deprenyl   responses of forebrain neurons to deprenyl
  • Deprenyl   protects neurons from glutamate toxicity
  • Deprenyl   nitric oxide production and dilation of cerebral blood vessels
  • Deprenyl   modulates the decline of the striatal dopaminergic system
  • Deprenyl   inhibits tumor growth in rats with mammary tumors
  • Deprenyl   a catecholaminergic activity enhancer in the brain
  • Deprenyl   releases coupling in the catecholaminergic neurons
  • Deprenyl   clinical potential in neurologic and psychiatric disorders
  • Deprenyl   protects human dopaminergic neuroblastoma cells
  • Deprenyl   nitric oxide production and dilation of cerebral blood vessels
  • Deprenyl   assessing the effects of deprenyl on longevity of animals
  • Deprenyl   effects on cocaine-induced euphoria
  • Deprenyl   effects on response to experimental cocaine administration  
  • Deprenyl   Are metabolites of deprenyl useful or harmful?
  • Deprenyl   is devoid of amphetamine-like effects
  • Deprenyl   treated rats lived beyond the known maximum lifespan
  • Deprenyl   stimulates biosynthesis of cytokines interleukin-1 & 6
  • Deprenyl   pharmacological basis of the beneficial effects
  • Deprenyl   modulates the decline of the dopamineric system