... showed that adrenaline elicits a dose-dependent β-adrenoreceptor (AR)-mediated increase in f V that does not require expression of β1-ARs, as the hyperventilatory response to β-AR stimulation was unaltered in adrb1 −/− mutants, generated by CRISPR/Cas9 knockout. In response to hypoxia and propranolol co...

... the resultant effects on cardiac output in anesthetized animals. Atrial ligation had no significant effects on total systemic blood flow before or after adrenaline injection. Unexpectedly, pulmonary flow was increased following atrial ligation prior to adrenaline treatment, but was unaffected after...

.... Physiological levels of d -glucose did not influence twitch force development for aerobic preparations (1) paced at 0.5 or 1.1 Hz, (2) at 15 or 23°C, (3) receiving adrenergic stimulation or (4) during reoxygenation with or without adrenaline after severe hypoxia. Contractile responses to ryanodine, an inhibitor...

... for rainbow trout Oncorhynchus mykiss and brown trout Salmo trutta at similar temperatures and with tonic adrenergic (5 nmol l –1 adrenaline) stimulation. For 22°C-acclimated sea bass, heart rate was significantly higher, but maximum stroke volume was reduced by 22% (1.05±0.05 ml kg –1 )compared with 18°C...

... contribute to this bradycardia is unknown. We examined how temperature acclimation, oxygen deprivation,acidosis, hyperkalemia, hypercalcemia and adrenaline affect chronotropy in the turtle myocardium. We monitored spontaneous contraction rates of right-atrial preparations obtained from 21°C- and 5°C...

... cardiac performance in the presence and absence of maximal adrenergic stimulation was assessed with in situ rainbow trout hearts using relevant hyperkalemic (5.0 mmol l –1 K + ), acidotic(pH 7.5) and hypoxic challenges. With tonic adrenergic stimulation (5.0 nmol l –1 adrenaline), hearts produced only...

..., Python regius , the tegu lizard, Tupinanvis merianae , and the varanid lizard, Varanus exanthematicus . Force-frequency trials and imposed pauses were performed on ventricular and atrial tissue from each species with and without the SR inhibitor ryanodine, and in the absence and presence of adrenaline...

... et al.,2002 ; Schwerte et al.,2003 ). This prompts questions about when during development do cardiovascular control systems appear and which types (intrinsic, neuronal and humoral) of control are involved during different stages of development. cardiovascular system adrenaline...

..., G. M., Hunter,L. W. and Rorie, D. K. ( 2001 ). Nitric oxide modulates evoked catecholamine release from canine adrenal medulla. Neuroscience 104 , 1165 -1173. Bernier, N. J. and Perry, S. F. ( 1999 ). Cardiovascular effects of angiotensin-II-mediated adrenaline release in rainbow trout...

... a significant difference from the secretion rate after 10 min; a double dagger represents a significant difference from the control (saline-perfused) group. Fig. 2 illustrates the levels of stored catecholamines in several tissues. The catecholamine(adrenaline plus noradrenaline) concentration...

...) are co-released with acetylcholine from preganglionic fibres upon nerve stimulation. Both VIP and PACAP elicit the secretion of exclusively adrenaline from rainbow trout chromaffin cells, which presumably arises from the activation of VPAC type receptors. Thus, the goals of the present study were (1...

... release during acute hypoxia during periods of nicotinic receptor desensitisation.Despite nicotinic receptor desensitisation induced by intravenous infusion of nicotine (1.3×10 –5 mol kg –1 h –1 ), plasma catecholamine levels were increased to levels (adrenaline plus noradrenaline 125–200 nmol l –1...

... bradycardia, while the intrinsic effects of anoxia and acidosis are probably important during chronic anoxia. Injection of adrenaline caused a pressor response through increased systemic resistance at both acclimation temperatures. This response was blunted by acute and chronic anoxic exposure, suggesting...

... values in Chionodraco rastrospinosus were similar to red-blooded species (178±45 nmol g −1 h −1 ). Circulating catecholamine levels were extremely high in all species after fishing stress, with adrenaline levels 3–4 times higher than noradrenaline levels. Cortisol levels remained low, ranging from 1.33...

... field stimulation caused specific voltage-dependent neuronal stimulation of adrenaline and noradrenaline secretion. The contribution of non-specific depolarization was negligible. Several experimental results confirmed the specificity of the field stimulation technique. First, pre-treatment...

...J. A. Riegel ABSTRACT Adrenaline and noradrenaline increased the perfusion pressure ( P perf ) and single glomerulus filtration rate (SGFR) of perfused hagfish glomeruli. Small amounts (0.1 % or 0.5 %) of bovine serum albumin (BSA) in perfusion fluids containing Ficoll 70 did not diminish the loss...

... of SR Ca 2+ release) reduced the force of contraction by approximately 50 % and the rates of contraction and relaxation by 60 % in yellowfin tuna atrium. High levels of adrenaline were unable to ameliorate the effects of ryanodine. We conclude that the SR is active in contributing Ca 2+ to force...

..., significantly increased the secretion rates of noradrenaline and adrenaline in response to nicotine (10 −8 to 10 −7 mol kg −1 ). In vivo , intra-arterial injections of nicotine (300–600 nmol kg −1 ) into normocapnic or moderately hypercapnic fish (water or 0.67 kPa) caused a dose-dependent elevation...

...+ influx across the sarcolemma (SL) to cardiac performance in rainbow trout Oncorhynchus mykiss . Adrenaline and ryanodine were used to modulate Ca 2+ flux through the SL and SR, respectively. Experiments were conducted at two temperatures (12 °C and 22 °C) (1) to investigate the effect of an acute...

... Limited 1997 erythrocytes adrenaline fructose 1,6-bisphosphate microcalorimetry sea bream Sparus aurata normoxia anoxia It is well known that adrenergic stimulation of fish red blood cells (RBCs) increases the internal pH and thus enhances the affinity of haemoglobin for oxygen...