Mc. Carrillo et al., Enhancing effect of rasagiline on superoxide dismutase and catalase activities in the dopaminergic system in the rat, LIFE SCI, 67(5), 2000, pp. 577-585
Rasagiline [N-propargyl-1(R)-aminoindan] is a selective irreversible MAO-B
inhibitor as is(-)deprenyl. The effect of the drug on antioxidant enzyme ac
tivities on dopaminergic tissue was examined in male F-344 rats (8.5-months
-old), Two experi-mental groups were infused subcutaneously with rasagiline
saline solutions by means of osmotic minipumpus implanted subcutaneously i
n the back of the rats. Control animals were also similarly implanted with
saline filled mini-pumps. Three-and-one-half weeks later, animals were sacr
ificed and selected tissue samples removed from brain, kidney and heart. Tw
o doses of rasagiline (0.5 mg/kg/day, 1.0 mg/kg/day, both for 3.5 weeks) si
gnificantly increased catalase activities about 2-fold in substantia nigra
and striatum but not in hippocampus. Interestingly, in both renal cortex an
d medulla, catalase (CAT) activities were significantly increased. Both Mn-
and Cu,Zn-superoxide dismutase (SOD) activities were increased 2 to 4 fold
in substantia nigra, striatum and renal cortex and heart, Several groups,
including our own have reported an extension of survival of deprenyl-treate
d animals of different species. Although the mechanism(s) of the life exten
sion by deprenyl remains unresolved, it would be interesting to investigate
the effect of rasagiline on the survival of animals, since deprenyl also w
as shown to increase antioxidant enzyme activities in brain dopaminergic re
gions. (C) 2000 Elsevier Science Inc. All rights reserved.