Behavioral and neural biology, 50(3), 251-254 (1988-11-01)
The pre-test administration of beta-endorphin (0.05 microgram/mouse), oxotremorine sesquifumarate (5.0 micrograms/mouse), or beta-endorphin plus oxotremorine enhanced retention test performance of a conditioned emotional response in mice. The effects were blocked by scopolamine. Scopolamine had no effect of its own. The
Behavioral and neural biology, 57(3), 248-255 (1992-05-01)
Post-training administration of the centrally acting muscarinic agonist oxotremorine (50.0 microgram/kg, ip) facilitated 48-hr retention, in mice, of a one-trial step-through inhibitory avoidance response. Oxotremorine-induced memory facilitation was not prevented by the simultaneous post-training administration of the central beta-adrenoceptor antagonist
Cyanide is generated in neurons and this report examines the two different receptors which mediate cyanide formation in neuronal tissue. An opiate receptor blocked by naloxone increases cyanide production both in rat brain and in rat pheochromocytoma (PC12) cells. A
American journal of respiratory and critical care medicine, 156(2 Pt 1), 389-395 (1997-08-01)
Human bronchi were incubated in organ baths to measure histamine release. The calcium ionophore A23187 (10 mumol/L; 1 min) stimulated histamine release by 148 +/- 28% (n = 11) above the prestimulation level but was ineffective in epithelium-denuded bronchi. Neither
In a companion study (Carnicella et al., 2005), we showed that the muscarinic antagonist atropine, when administered after extensive training during both conditioning and testing, affected neither cued nor contextual fear memories when both of them did not compete for
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