PMID: 11324716Apr 28, 2001Paper

Lithium does not synergize the peripheral action of cholinomimetics as seen in the central nervous system

Life Sciences
G Chaudhary, Y K Gupta

Abstract

Lithium is known to synergize the action of cholinomimetics in the CNS such that pilocarpine induces seizures in low concentration (1/13th of per se dose) in rats. The present study was undertaken to see if lithium priming also enhances the peripheral effects of acetylcholine and pilocarpine i.e. change in blood pressure in rats and contractions of the isolated guinea pig ileum. In anaesthetized rats the blood pressure was recorded from cannulated carotid artery connected through the pressure transducer to Coulbourn polygraph. The blood pressure response of pilocarpine was not different either in magnitude or in duration when administered 1, 2 and 4 h after lithium chloride (3 meq/kg) pretreatment as compared to the control. Similarly acetylcholine effect remained unchanged after lithium chloride priming. In the isolated guinea pig ileum experiments, ileum was incubated for 1 h in different concentrations of lithium chloride and effect on acetylcholine induced contractions were observed. Lithium in concentration of 2.8 x 10(-3) M had no effect on acetylcholine induced contractions while incubation with higher concentrations of 1.4 x 10(-2) M and 2.8 x 10(-2) M significant inhibition of acetylcholine contractions were observed. ...Continue Reading

Citations

May 26, 2011·Neurotoxicology and Teratology·Renata da Luz OliveiraCarla Denise Bonan
Dec 1, 2003·Acta Neuropsychiatrica·B Corbella, E Vieta

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