Bosch_1993_Gen.Pharmacol_24_1101

Reference

Title : Comparative effects of velnacrine, tacrine and physostigmine on the twitch responses in the rat phrenic-hemidiaphragm preparation - Bosch_1993_Gen.Pharmacol_24_1101
Author(s) : Bosch F , Morales M , Badia A , Banos JE
Ref : General Pharmacology , 24 :1101 , 1993
Abstract :

1. Cholinesterase inhibitors potentiated twitch responses induced by nerve stimulation, with physostigmine more potent than tacrine and velnacrine. However, at higher concentrations, tacrine decreased twitch responses in a concentration-dependent manner. 2. Tacrine strongly depressed directly-induced twitch responses, whereas the other drugs had minimal effects. 3. Physostigmine was the most potent drug in reversal of tubocurarine-induced blockade, but its antagonism index was similar to those obtained with tacrine and velnacrine at higher concentrations. When evaluating their ability to reverse neomycin-induced blockade, all drugs exhibited a similar effect. 4. It is concluded that tacrine and velnacrine are less potent than physostigmine in potentiating skeletal neuromuscular transmission. Additionally, the blocking effects of tacrine could limit its therapeutic efficacy.

PubMedSearch : Bosch_1993_Gen.Pharmacol_24_1101
PubMedID: 8270168

Related information

Citations formats

Bosch F, Morales M, Badia A, Banos JE (1993)
Comparative effects of velnacrine, tacrine and physostigmine on the twitch responses in the rat phrenic-hemidiaphragm preparation
General Pharmacology 24 :1101

Bosch F, Morales M, Badia A, Banos JE (1993)
General Pharmacology 24 :1101