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J Abrahamsen et al.
Pharmacology & toxicology, 76(3), 185-189 (1995-03-01)
The possible involvement of cyclic AMP in the stimulation-evoked 3H-overflow from rabbit isolated ear artery preloaded with 3H-noradrenaline was studied. Cyclic AMP (10(-5)-3 x 10(-4)M), 8-bromo-cyclic AMP (3 x 10(-4)M) and adenosine (10(-5)-3 x 10(-4)M) enhanced stimulation-evoked 3H-overflow. Dibutyryl-cyclic AMP
M D Houslay
Cellular signalling, 2(1), 85-98 (1990-01-01)
Using experimentally derived data for the activities and kinetic constants of hepatocyte cyclic AMP phosphodiesterase isoenzymes together with the derived changes in adenylate cyclase activity, due to stimulation and subsequent desensitization by glucagon, a computer model was established to simulate
Z Merican et al.
Clinical and experimental pharmacology & physiology, 10(1), 35-44 (1983-01-01)
1. Cyclic AMP and cyclic GMP levels were determined in bovine splenic nerve segments in the absence and presence of (+/-)-isoprenaline, (-)-phenylephrine, clonidine and ICI 63 197 (a phosphodiesterase inhibitor). The chosen concentrations of adrenoceptor agonists were those which are
M R Mustafa et al.
European journal of pharmacology, 148(2), 171-177 (1988-03-29)
The effects of single and chronic doses of rolipram on the sensitivity of alpha 2-adrenoceptors have been compared with the phosphodiesterase inhibitors, isobutylmethylxanthine (IBMX) and ICI 63,197, and the antidepressant, desipramine. While pretreatment with a single dose of rolipram, ICI
H Wachtel et al.
Neuropharmacology, 25(10), 1119-1126 (1986-10-01)
The antidepressant potential of rolipram and inhibitors of phosphodiesterase (PDE) which are selective for cyclic AMP has previously been ascribed to enhancement of central noradrenergic transmission by the combination of two mechanisms of action: increase of synthesis of noradrenaline and
Z Merican et al.
Clinical and experimental pharmacology & physiology, 8(1), 57-66 (1981-01-01)
1. Cyclic AMP levels have been determined in the soleus muscles of anaesthetized cats in the absence of drugs, and during depression of incomplete tetanic contractions produced by (-)-isoprenaline, ICI 63,197 (a phosphodiesterase inhibitor) or levodopa. 2. Cyclic AMP levels
H O Collier et al.
Federation proceedings, 40(5), 1513-1518 (1981-04-01)
A quasi-morphine withdrawal syndrome (QMWS) is a pattern of behavior closely resembling the true withdrawal syndrome in the opiate-dependent animal, which can be elicited acutely by a nonopiate drug in an opiate-naive animal. The main criteria proposed for the QMWS
S P Canfield et al.
International journal of tissue reactions, 5(3), 241-243 (1983-01-01)
The effect of 5 hydroxytryptamine (5-HT) on gastric acid secretion by the rat isolated stomach has been studied. 5-HT (10 microM) significantly inhibited secretory responses to pentagastrin, histamine and isoprenaline but not those due to bethanechol, dibutyryl cyclic AMP or
A Bobik et al.
Journal of cardiovascular pharmacology, 6(5), 795-801 (1984-09-01)
We examined the effects of prolonged exposure of cardiac cells in primary culture to the partial beta-adrenoceptor agonist prenalterol and inhibitors of phosphodiesterase on their subsequent ability to increase intracellular cyclic AMP during a 5-min exposure to 50 microM isoprenaline
C B Archer et al.
The British journal of dermatology, 109(5), 559-564 (1983-11-01)
Peripheral blood lymphocyte cyclic AMP responses to isoprenaline, prostaglandin E2 and histamine were examined in patients with atopic eczema, in the presence and absence of a potent phosphodiesterase inhibitor (PDEI). Basal cyclic AMP levels were not significantly different in atopic
H Wachtel
Psychopharmacology, 77(4), 309-316 (1982-01-01)
The significance of a characteristic symptomatology (hypothermia, hypoactivity, forepaw shaking, grooming, head twitches) as a potential in vivo correlate of enhanced availability of brain adenosine cyclic 3',5'-monophosphate (cAMP) was examined in rats following systemic administration of various doses of dibutyryladenosine
T Hermsdorf et al.
Cellular signalling, 10(9), 629-635 (1998-10-30)
Primary cultures of rat hepatocytes were used to study the combined effects of insulin and dexamethasone on cyclic AMP phosphodiesterase 3 (PDE 3) and glycogen metabolism. PDE activity was measured in extracts obtained by hypotonic shock treatment of the particulate
J Abrahamsen et al.
Naunyn-Schmiedeberg's archives of pharmacology, 343(2), 161-165 (1991-02-01)
The aim of the present investigation was to examine whether or not presynaptic facilitatory beta-adrenoceptors are detectable on the postganglionic nerves in the rabbit isolated ear artery. Strips of rabbit central ear artery were incubated with 3H-noradrenaline (10(-7) mol/l; 30
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