Order
 
HOME
 
Alzheimers
 
Piracetam
 
Idebenone
 
 
 
 
 
 
 
 
 
 
 
 
 
 

































 

Assessing the effects of deprenyl on
longevity and antioxidant defenses in different animal models


Kitani K, Kanai S, Ivy GO, Carrillo MC

National Institute for Longevity Sciences,
Aichi, Japan.
Ann N Y Acad Sci 1998 Nov 20; 854:291-306

ABSTRACT

Among many pharmaceuticals that have been tested for their effects on longevities of different animal rodents, deprenyl is unique in that its effects on longevity has been tested in at least four different animal species by independent research groups and that the effect has been postulated to be due to its effect of raising such antioxidant enzyme activities as superoxide dismutase (SOD) and catalase (CAT) in selective brain regions. Thus far, in all four species of animals examined (rats, mice, hamsters, and dogs), a positive effect was demonstrated, although the extent of its effect is quite variable.  Our group has examined the effect on longevities in rats and mice and on antioxidant enzymes in rats, mice, and dogs.  Although in rats of both sexes, we have obtained positive effects on longevity, two studies with different doses in mice did not reveal a significantly positive effect.  We have observed, however, significantly positive effects on SOD (in Cu, Zn-, and Mn-) as well as CAT (but not glutathione peroxidase) activities in the brain dopaminergic system such as in the S. nigra and striatum (but not in hippocampus) in all rats, mice, and dogs, although the effects were quite variable, depending on the doses used. In mice, however, a long-term administration (3x/w, 3 months) caused a remarkable decrease in the magnitude of activity as well as a narrowing of the effective dose range, which may explain a relatively weak effect of the drug on mouse longevity.  Further, a recent study on aging beagle dogs by Ruehl et al. showed a remarkable effect on longevity, which agrees with our SOD study in dogs. Although deprenyl has been claimed to have several other effects, such as a radical scavenging effect and a neuroprotective effect, past reports on its effects on longevities and antioxidant defenses are compatible with the notion that the drug prolongs the life span of animals by reducing the oxidative damage to the brain dopaminergic system during aging.  Further, our studies on F-344 rats as well as a dog study by Ruehl et al. suggest that the drug may at least partially prolong the life span of animals by enhancing immune system function and preventing tumor development in animals.

  • 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