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Keywords: catecholamines
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Journal Articles
J Exp Biol (2013) 216 (23): 4435–4442.
Published: 01 December 2013
... activity, which became elevated after only 15 s of chasing. Several hours after stress, serotonergic activity recovered its basal levels, in parallel with the recovery of other stress markers such as plasma catecholamines and cortisol. Dopaminergic activity was also increased after stress, but only in the...
Includes: Supplementary data
Journal Articles
J Exp Biol (2012) 215 (22): 4006–4014.
Published: 15 November 2012
... rate cardiac output temperature adrenergic stimulation catecholamines Temperature is a critical environmental factor that influences all life functions through changes in the rates of biochemical and physiological processes, and alterations in the stability of biological molecules...
Journal Articles
J Exp Biol (2010) 213 (11): 1813–1821.
Published: 01 June 2010
... in the hyperglycaemic effect exerted by 5-HT. * Author for correspondence ( manuelalejo.aldegunde@usc.es ) 15 2 2010 © 2010. 2010 glucose serotonin serotonin receptors catecholamines Studies performed in rodents suggest that 5-hydroxytryptamine (5-HT; serotonin...
Journal Articles
J Exp Biol (2009) 212 (7): 934–944.
Published: 01 April 2009
... vivo . Hence, we (1) injected neural and humoral antagonists into flounder ( Pleuronectes americanus ) in vivo to determine the contribution of autonomic innervation and circulating catecholamines to the control of resting cardiac function; (2)measured pre- and post-stress (90 s chase) catecholamine...
Journal Articles
J Exp Biol (2006) 209 (24): 4966–4973.
Published: 15 December 2006
... adrenoceptors in the eel Anguilla anguilla heart identifying, for the first time in a working fish heart, theβ3-AR-dependent negative inotropy discovered in mammals. 16 10 2006 © The Company of Biologists Limited 2006 2006 catecholamines teleost G i/o proteins cGMP-dependent protein kinase...
Journal Articles
J Exp Biol (2006) 209 (21): 4214–4223.
Published: 01 November 2006
...Brian McNeill; Steve F. Perry SUMMARY Experiments were performed to test the hypothesis that exposure of rainbow trout to repetitive hypoxia would result in a decreased capacity of chromaffin cells to secrete catecholamines owing to increased production of nitric oxide(NO), a potent inhibitor of...
Journal Articles
J Exp Biol (2006) 209 (7): 1310–1325.
Published: 01 April 2006
... cardiac output, a 14% greater post-stress blood haemoglobin concentration, 5–10% higher red muscle and heart aerobic enzyme (citrate synthase or cytochrome oxidase) activities, and twofold higher resting and 1.7× higher post-stress, catecholamine levels. However, gill surface area was the only...
Journal Articles
J Exp Biol (1992) 163 (1): 85–95.
Published: 01 February 1992
... Christensen, 1971), as well as in pigeon erythrocytes *To whom reprint requests should be addressed. Key words: L-serine, trout, red blood cells, catecholamines, isoproterenol, Salmo trutta. 86 M. A. GALLARDO, J. PLANAS AND J. SANCHEZ (the ASCP system; Eavenson and Christensen, 1967). However, no references...
Journal Articles
J Exp Biol (1991) 161 (1): 347–365.
Published: 01 November 1991
... Physiology, Department of Biology, University of Texas at Arlington, Arlington, TX 76019, USA. Key words: Amia calva, air-breathing fish, chemoreceptors, gills, glossopharyngeal nerve, vagus nerve, hypoxia, NaCN, catecholamines, ventilatory control. 348 D . J. M C K E N Z I E , M. L. BURLESON AND D . J...
Journal Articles
J Exp Biol (1991) 160 (1): 285–308.
Published: 01 October 1991
... CO 2 and H + m elevations, respectively); (3) marked ionic and fluid volume disturbances; and (4) a surge in plasma catecholamines. During recovery, the smaller fast component (20%) of excess postexercise oxygen consumption (EPOC) is explained by CP and ATP resynthesis and aerobic demands, but the...
Journal Articles
J Exp Biol (1991) 156 (1): 233–248.
Published: 01 March 1991
... levels of this catecholamine. This desensitization can be reversed in vitro as a function of time, but only when blood is maintained under sufficiently aerobic conditions. 5 10 1990 © 1991 by Company of Biologists 1991 red blood cell catecholamines hypoxia Na + /H + exchange...
Journal Articles
J Exp Biol (1990) 152 (1): 353–367.
Published: 01 September 1990
...RICHARD C. PLAYLE; R. STEPHEN MUNGER; CHRIS M. WOOD A transient inhibitory effect of catecholamines on relative CO 2 excretion, mediated by an inhibition of HCO 3 − dehydration through the red blood cell (RBC), has been proposed to cause the increase in P a CO CO2 routinely observed after strenuous...
Journal Articles
J Exp Biol (1990) 151 (1): 57–70.
Published: 01 July 1990
...S. AOTA; K. D. HOLMGREN; P. GALLAUGHER; D. J. RANDALL Plasma catecholamine levels and gill ventilation were measured in rainbow trout ( Oncorhynchus mykiss ) during acidosis and hypoxia. There was an increase in both plasma catecholamines and ventilation correlated with the acidosis. Fish exposed...
Journal Articles
J Exp Biol (1989) 147 (1): 471–491.
Published: 01 November 1989
... of external counterions and by the increase in branchial ionic permeability that invariably accompanies exhaustive exercise. catecholamines rainbow trout exercise gills acid-base regulation © 1989 by Company of Biologists 1989 3 7 1989 exp. Bio!. 147, 471-491 (1989) 4 7 1...
Journal Articles
J Exp Biol (1989) 141 (1): 21–32.
Published: 01 January 1989
...J. D. METCALFE; P. J. BUTLER We assessed the effectiveness of alpha-methyl- p -tyrosine in inhibiting catecholamine synthesis in the dogfish and examined the effects of catecholamine depletion on the cardiovascular system in normoxia and in response to hypoxia. Although alpha-methyl- p -tyrosine...
Journal Articles
J Exp Biol (1989) 141 (1): 377–387.
Published: 01 January 1989
...P. J. BUTLER; M. AXELSSON; F. EHRENSTROM; J. D. METCALFE; S. NILSSON Sectioning the first four pairs of spinal nerves prevents the large increase in circulating catecholamine concentrations seen in Atlantic cod swimming at their critical velocity (U crit ). There is also a significant reduction in...
Journal Articles
J Exp Biol (1988) 140 (1): 301–312.
Published: 01 November 1988
...B. L. TUFTS; R. A. FERGUSON; R. G. BOUTILIER In vitro and in vivo experiments were carried out to determine the effect of catecholamines on erythrocytic chloride/bicarbonate exchange in the rainbow trout. A further modified boat assay is described and was used to measure bicarbonate flux through...
Journal Articles
J Exp Biol (1987) 130 (1): 389–404.
Published: 01 July 1987
... under the short-term control of catecholamines and under the long-term control of interrenal steroids. 5 2 1987 © 1987 by Company of Biologists 1987 pH regulation epithelial ion transport aldosterone corticosterone catecholamines respiratory acidosis J. exp. Biol. 130, 389-404...
Journal Articles
J Exp Biol (1985) 116 (1): 251–269.
Published: 01 May 1985
...S. F. PERRY; C. DAXBOECK; G. P. DOBSON An isolated, saline-perfused trout head preparation, irrigated with hyperoxic water (P Woλ = 250 Torr), was used to assess diffusion/perfusion limitations to gill oxygen transfer. In the absence of catecholamines, increasing the perfusion flow rate caused a...