Abstract
Adenosine 5'-triphosphate (ATP, 0.1-100 microM), produced inward currents in patch-clamped coeliac neurones from guinea-pig when studied in either the whole cell configuration or in excised (outside-out) patches. The P2-purinoceptor antagonists suramin (80-230 microM) or reactive blue 2 (2-20 microM) depressed the ATP-induced currents but not those produced by acetylcholine. Excitatory post-synaptic currents (e.p.s.cs) were observed in cultured neurones. E.p.s.cs had similar current-voltage relationships to currents evoked by ATP in excised patches and were reduced by suramin or reactive blue 2 to a similar extent as ATP currents. The results suggest that ATP is the excitatory neurotransmitter in cultures of these neurones.
Full text
PDF

Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Allen T. G., Burnstock G. The actions of adenosine 5'-triphosphate on guinea-pig intracardiac neurones in culture. Br J Pharmacol. 1990 Jun;100(2):269–276. doi: 10.1111/j.1476-5381.1990.tb15794.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Burnstock G. Purinergic nerves. Pharmacol Rev. 1972 Sep;24(3):509–581. [PubMed] [Google Scholar]
- Dunn P. M., Blakeley A. G. Suramin: a reversible P2-purinoceptor antagonist in the mouse vas deferens. Br J Pharmacol. 1988 Feb;93(2):243–245. doi: 10.1111/j.1476-5381.1988.tb11427.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Fieber L. A., Adams D. J. Adenosine triphosphate-evoked currents in cultured neurones dissociated from rat parasympathetic cardiac ganglia. J Physiol. 1991 Mar;434:239–256. doi: 10.1113/jphysiol.1991.sp018467. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Fyffe R. E., Perl E. R. Is ATP a central synaptic mediator for certain primary afferent fibers from mammalian skin? Proc Natl Acad Sci U S A. 1984 Nov;81(21):6890–6893. doi: 10.1073/pnas.81.21.6890. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kreulen D. L., Szurszewski J. H. Nerve pathways in celiac plexus of the guinea pig. Am J Physiol. 1979 Jul;237(1):E90–E97. doi: 10.1152/ajpendo.1979.237.1.E90. [DOI] [PubMed] [Google Scholar]
- McLachlan E. M., Meckler R. L. Characteristics of synaptic input to three classes of sympathetic neurone in the coeliac ganglion of the guinea-pig. J Physiol. 1989 Aug;415:109–129. doi: 10.1113/jphysiol.1989.sp017714. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Nakazawa K., Fujimori K., Takanaka A., Inoue K. Reversible and selective antagonism by suramin of ATP-activated inward current in PC12 phaeochromocytoma cells. Br J Pharmacol. 1990 Sep;101(1):224–226. doi: 10.1111/j.1476-5381.1990.tb12117.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sneddon P., Westfall D. P. Pharmacological evidence that adenosine triphosphate and noradrenaline are co-transmitters in the guinea-pig vas deferens. J Physiol. 1984 Feb;347:561–580. doi: 10.1113/jphysiol.1984.sp015083. [DOI] [PMC free article] [PubMed] [Google Scholar]