abstract：:1. Adrenocorticotrophin (ACTH) administration to sheep produces a rapid adrenally dependent hypertension which is maximal after 3 days and associated with increased cardiac output (CO) and heart rate (HR), while calculated total peripheral resistance remains unchanged. 2. This study investigated the proposal that a ce...

journal_title：Clinical and experimental pharmacology & physiology

authors： Spence CD,Mathai M,Mills EH,Coghlan JP,Whitworth JA,Scoggins BA

更新日期：1989-07-01 00:00:00

abstract：:1. The effects of reserpine pretreatment on neurotransmission in the guinea-pig vas deferens have been re-examined with a view to study the role of noradrenaline (NA) in mediating postjunctional electrical responses and, in particular, excitatory junction potentials (EJP). 2. Reserpine (5 mg/kg, i.p.) caused almost to...

journal_title：Clinical and experimental pharmacology & physiology

authors： Cunnane TC,Manchanda R

更新日期：1989-06-01 00:00:00

abstract：:1. Deviation supersensitivity and post-junctional supersensitivity are important determinants in the control of the response of smooth muscle. 2. Post-junctional supersensitivity is a process whereby effector cells have augmented responsiveness as a consequence of an impaired physiological stimulus. Deviation supersen...

journal_title：Clinical and experimental pharmacology & physiology

authors： Head RJ

更新日期：1989-06-01 00:00:00

abstract：:1. Several selective antagonists are available to differentiate between muscarinic receptors. 2. Further subdivision of M1 and M2 muscarinic receptors appears possible and is supported by studies with cloned receptors. 3. Reasons for differences between affinity constants determined in functional and binding studies a...

journal_title：Clinical and experimental pharmacology & physiology

authors： Mitchelson F,Choo LK,Darroch S

更新日期：1989-06-01 00:00:00

abstract：:1. The concentrations of gamma-amino butyric acid (GABA) and glutamate were measured in the brains of chickens which were treated with furazolidone (FZ) or nitrofurazone (NF) at oral doses of 12.5, 25 or 50 mg/kg for 5 days. 2. At the end of the treatment, the birds lost about 9% of their bodyweight when on the small ...

journal_title：Clinical and experimental pharmacology & physiology

authors： Ali BH

更新日期：1989-05-01 00:00:00

abstract：:1. Synthetic human endothelin was injected intravenously over the range 1.5-50 micrograms to examine its cardiovascular actions in conscious sheep. 2. Mean arterial pressure increased by 9-21 mmHg within 30-120 s over the range 5-50 micrograms endothelin. The increase in blood pressure was associated with increased ca...

journal_title：Clinical and experimental pharmacology & physiology

authors： Scoggins BA,Spence CD,Parkes DG,McDonald M,Wade JD,Coghlan JP

更新日期：1989-04-01 00:00:00

abstract：:1. Pre- and postjunctional effects of endothelin (1-10 nmol/L) have been studied in the rabbit isolated ear artery and in rat isolated atria. 2. Endothelin produced concentration-dependent increases in arterial perfusion pressure, and had positive chronotropic and inotropic effects in rat atria. 3. Vasoconstrictor res...

journal_title：Clinical and experimental pharmacology & physiology

authors： Wong-Dusting HK,Reid JJ,Rand MJ

更新日期：1989-04-01 00:00:00

abstract：:1. Serial observations of blood pressure after unilateral adrenalectomy for aldosterone-producing adenoma revealed an incidence of hypotension (systolic BP less than fifth percentile for age- and sex-matched normal population) of 27% at 2 years, more than 5 times that predicted. 2. Serial observations of volume regula...

journal_title：Clinical and experimental pharmacology & physiology

authors： Gordon RD,Hawkins PG,Hamlet SM,Tunny TJ,Klemm SA,Backmann AW,Finn WL

更新日期：1989-04-01 00:00:00

abstract：:1. The effects of ouabain and acetazolamide on the secretion of pancreatic juice stimulated by secretin in anaesthetized dogs were investigated. 2. Intra-arterial injection of ouabain (1-10 micrograms) and acetazolamide (1-10 mg) caused dose-dependent decreases in the volume of pancreatic juice. When both drugs were a...

journal_title：Clinical and experimental pharmacology & physiology

authors： Iwatsuki K,Horiuchi A,Yonekura Y,Chiba S

更新日期：1989-03-01 00:00:00

abstract：:1. A rapid imaging technique with temporal resolution of about 1 ms was employed to describe cell-length changes during the isotonic contraction cycle of adult rat ventricular myocytes at 22 degrees C. 2. Parameters of cell contraction and relaxation were defined and values obtained under control conditions and after ...

journal_title：Clinical and experimental pharmacology & physiology

authors： Delbridge LM,Harris PJ,Morgan TO

更新日期：1989-03-01 00:00:00

abstract：:1. The aim of this study was to compare the effect of acute versus chronic ADH administration on the handling of sodium, potassium and water by the nephron. Simultaneous clearance and free-flow micropuncture experiments were performed on rats, infused with hypotonic Ringer solution, following either 1-3 h ('acute') or...

journal_title：Clinical and experimental pharmacology & physiology

authors： Field MJ,Seow F,Lawrence JR

更新日期：1989-02-01 00:00:00

abstract：:1. The spinal sympathetic outflow (C7-T2) of pithed male Wistar rats was electrically stimulated (30-50 V, 0.5 ms, 0.1-1.0 Hz) and heart rate and arterial blood pressure were recorded. D-Tubocurarine (1 mg/kg) and atropine (1 mg/kg) were administered intravenously (i.v.) to reduce voluntary and parasympathetic nerve a...

journal_title：Clinical and experimental pharmacology & physiology

authors： Rechtman MP,King RG,Boura AL

更新日期：1988-12-01 00:00:00

abstract：:1. The concentrations of gamma-amino butyric acid (GABA) and glutamate were measured in the brains of chickens which were treated with furazolidone (FZ) or nitrofurazone (NF) at oral doses of 12.5, 25 or 50 mg/kg for 5 days. 2. At the end of the treatment, birds on the small dose of FZ or NF lost about 9% of their bod...

journal_title：Clinical and experimental pharmacology & physiology

authors： Ali BH

更新日期：1988-12-01 00:00:00

abstract：:1. In order to determine whether the antihypertensive effect of neonatal thymectomy in genetically hypertensive rats could be mediated through altered adrenal function, systolic blood pressure (SBP) and urinary excretion of deoxycorticosterone (DOC), corticosterone (B) and aldosterone were measured in thymectomized hy...

journal_title：Clinical and experimental pharmacology & physiology

authors： Bataillard A,Gomez-Sanchez CE,Vincent M,Touraine JL,Sassard J

更新日期：1988-11-01 00:00:00

abstract：:1. The possibility that the anticonvulsant activity of the benzodiazepines, diazepam and clobazam, is related to changes in EEG parameters, particularly beta activity, was investigated in amygdaloid kindled rats. 2. The effects of diazepam (1, 2, 4, 8 and 16 mumols/kg), administered intraperitoneally (i.p.), clobazam ...

journal_title：Clinical and experimental pharmacology & physiology

authors： Harris QL,Lewis SJ,Young NA,Vajda FJ,Jarrott B

更新日期：1988-10-01 00:00:00

abstract：:1. The present study was carried out to determine whether rilmenidine, a recently introduced antihypertensive agent which acts on alpha 2-adrenoceptors, has partial agonist activity on prejunctional alpha 2-adrenoceptors in guinea-pig atria. 2. Isolated preparations of guinea-pig atria were incubated with [3H]-noradre...

journal_title：Clinical and experimental pharmacology & physiology

authors： Li CG,Rand MJ

更新日期：1988-10-01 00:00:00

abstract：:1. Contractions and electrical activity were recorded from isolated segments of longitudinal (L) and circular (C) myometrium from rats on gestation days 16-17 and 21 before and during parturition. 2. The segments were arranged so that the activity of the two layers could be monitored simultaneously and independently. ...

journal_title：Clinical and experimental pharmacology & physiology

authors： Tomiyasu BA,Chen CJ,Marshall JM

更新日期：1988-09-01 00:00:00

abstract：:1. The effects of the alpha-beta-adrenergic antagonist labetalol on the activation of human platelets by adrenaline and other aggregating stimuli have been investigated. 2. Labetalol inhibited platelet aggregation and secretion induced by collagen and the second phase of aggregation caused by ADP, platelet activating ...

journal_title：Clinical and experimental pharmacology & physiology

authors： Anfossi G,Trovati M,Lanzio M,Mularoni E,Massucco P,Emanuelli G

更新日期：1988-06-01 00:00:00

abstract：:1. Landrace swine were identified as malignant hyperpyrexia susceptible (MHS) or control by the contracture responses of gracilis muscle fibre bundles to 3% halothane, 2 mmol/l caffeine and 80 mmol/l KCl. The effects of calmodulin-antagonist drugs on the contractile behaviour of control and MHS preparations were inves...

journal_title：Clinical and experimental pharmacology & physiology

authors： Collins SP,White MD,Denborough MA

更新日期：1988-06-01 00:00:00

abstract：:1. This study was designed to test the haemodynamic and renal effects in sheep of dihydrocyclosporin D (dCyD), an immunosuppressant agent derived from the fungus Tolypocladium inflatum Gams. 2. dCyD was infused for 5 days at 12 mg/kg per day. Mean arterial pressure (MAP) was elevated after 24 h, but thereafter returne...

journal_title：Clinical and experimental pharmacology & physiology

authors： Tresham JJ,Whitworth JA,de Lima JJ,McDougall JG,Scoggins BA

更新日期：1988-05-01 00:00:00

abstract：:1. Altered calcium regulation has been observed in experimental and human hypertension. In this study erythrocyte (RBC) intracellular calcium concentration ([Ca2+]i) was compared in conscious spontaneously hypertensive rats (SHR) and their normotensive controls (WKY) at rest and after injection of the dihydropyridine ...

journal_title：Clinical and experimental pharmacology & physiology

authors： Morris MJ,David-Dufilho M,Devynck MA

更新日期：1988-04-01 00:00:00

abstract：:1. The aim of this study was to assess the vagal and sympathetic nerve contribution to the relationship between mean arterial pressure (MAP) and heart rate (HR) at 6, 9, 14 and 20 weeks of age in conscious Wistar-Kyoto (WKY) and spontaneously hypertensive rats (SHR) with methoxamine- and nitroprusside-induced steady-s...

journal_title：Clinical and experimental pharmacology & physiology

authors： Head GA,Adams MA

更新日期：1988-04-01 00:00:00

abstract：:1. 125I-351A, a tyrosyl derivative of the angiotensin converting enzyme (ACE) inhibitor lisinopril, was used as a radioligand, and radioinhibitor binding and displacement assays have been established. 2. The in vitro potency of a range of ACE inhibitors against rat ACE was determined using the radioinhibitor binding d...

journal_title：Clinical and experimental pharmacology & physiology

authors： Johnston CI,Cubela R,Jackson B

更新日期：1988-02-01 00:00:00

abstract：:1. Activation of bulbospinal neurons projecting from the C1 area of the rostral ventrolateral medulla evokes a pressor response. The nature of the neurotransmitters involved in mediating this response at spinal cord level has not been established. 2. Amino acid antagonists were introduced into the spinal subarachnoid ...

journal_title：Clinical and experimental pharmacology & physiology

authors： Mills EH,Minson JB,Pilowsky PM,Chalmers JP

更新日期：1988-02-01 00:00:00

abstract：:1. Ventilatory measurements and functional residual capacity (FRC) were recorded from anaesthetized rats and ferrets using a whole body plethysmograph. Simulation of aspects of human chronic obstructive airways disease (COAD) was attempted by making animals acutely hypoxic or hypoxic and hypercapnic by causing them to...

journal_title：Clinical and experimental pharmacology & physiology

authors： Austin CA,Wach RA,Bee D,Finlay M,Emery CJ,Suggett AJ,Barer GR

更新日期：1987-11-01 00:00:00

abstract：:1. Neurotensin is released from the intestine into the portal circulation and to exert a systemic effect it must traverse the liver intact. 2. The role of the liver in neurotensin clearance was examined using the isolated perfused rat liver preparation. Two concentrations of neurotensin were used to determine the extr...

journal_title：Clinical and experimental pharmacology & physiology

authors： Brook CW,Shulkes A,Sewell RB,Smallwood RA

更新日期：1987-10-01 00:00:00

abstract：:1. We have reported previously that instant coffee contains ligands for opiate receptors with characteristics similar to those of opiate antagonists. 2. A concentrate of receptor-active ligands from instant coffee was prepared by serial treatments involving Amberlite XAD-2, flash chromatography and gel permeation chro...

journal_title：Clinical and experimental pharmacology & physiology

authors： Wynne KN,Familari M,Boublik JH,Drummer OH,Rae ID,Funder JW

更新日期：1987-10-01 00:00:00

abstract：:1. (-)[125I]-Cyanopindolol (CYP) binding to non-beta-adrenoceptor sites in dog kidney was characterized in homogenate preparations and their distribution in sections determined using autoradiography. 2. In homogenate studies, (-)[125I]-CYP bound to a single population of non-interacting sites (Bmax = 5.45, s.e.m. = 1....

journal_title：Clinical and experimental pharmacology & physiology

authors： Lew R,Summers RJ

更新日期：1987-09-01 00:00:00

abstract：:1. Anastomosis (vasovasostomy) of epididymal and prostatic halves of vasa deferentia was carried out in rats in which unilateral or bilateral medial transection (vasectomy) had been performed 4 weeks previously. 2. Noradrenaline levels in epididymal halves of vasa deferentia, 8 weeks after anastomosis with prostatic h...

journal_title：Clinical and experimental pharmacology & physiology

authors： DeGaris RM,Pennefather JN

更新日期：1987-05-01 00:00:00

abstract：:1. The object of this study was to determine whether meat protein per se is responsible for the higher blood pressures (BP) in omnivores compared with vegetarians. 2. Assessments were made by a double blind randomized control trial in 64 normotensive volunteers recruited from Royal Perth Hospital staff. 3. All volunte...

journal_title：Clinical and experimental pharmacology & physiology

authors： Prescott SL,Jenner DA,Beilin LJ,Margetts BM,Vandongen R

更新日期：1987-03-01 00:00:00

abstract：:1. Uridine monophosphate was tested in the conscious rat for natriuretic properties and an immunoperoxidase technique was used to localize uridine-containing compounds in the rat kidney. 2. Uridine monophosphate, infused in a moderate pressor dose, caused a significant natriuresis compared to the effect of control inf...

journal_title：Clinical and experimental pharmacology & physiology

authors： Macdonald G,Assef R,Watkins S,Burrell J

更新日期：1987-03-01 00:00:00

abstract：:1. Pressor responsiveness to angiotensin II (AII) and phenylephrine (PHE) was measured before and after 5 days of ACTH (1 mg i.m. daily) in six normal men maintained on low sodium diet (15 mmol daily). 2. ACTH caused a significant increase in systolic blood pressure of 9 mmHg. 3. There was no change in pressor respons...

journal_title：Clinical and experimental pharmacology & physiology

authors： Connell JM,Fisher BM,Davidson G,Fraser R,Whitworth JA

更新日期：1987-03-01 00:00:00

abstract：:1. Plasma concentration and atrial content of atrial natriuretic factor (ANF) were measured in rats with chronic renal failure induced by subtotal nephrectomy. 2. Plasma ANF was higher, and atrial ANF content lower in rats with renal failure when compared with sham-operated controls. 3. Plasma renin activity (PRA) and...

journal_title：Clinical and experimental pharmacology & physiology

authors： Hodsman GP,Jackson B,Debrevi LM,Ogawa K,Johnston CI

更新日期：1987-03-01 00:00:00

abstract：:Sixteen stable asthmatics had the protective effects of inhaled fenoterol (200 micrograms) and inhaled ipratropium bromide (60 micrograms) against standardized histamine inhalation tests at 1 h examined in a randomized double blind fashion. There was no significant difference in the baseline forced expired volume in 1...

journal_title：Clinical and experimental pharmacology & physiology

authors： Ruffin RE,Meki M,Alpers JH

更新日期：1987-02-01 00:00:00

abstract：:The effects of the calcium antagonists verapamil and nifedipine on mean arterial blood pressure, heart rate and pressor responses to a range of alpha-adrenoceptor agonists were examined in male normotensive New Zealand white rabbits and in rabbits with perinephritis hypertension. Verapamil and nifedipine caused a grea...

journal_title：Clinical and experimental pharmacology & physiology

authors： Hamilton CA,Jardine E,Sumner DJ,Reid JL

更新日期：1987-02-01 00:00:00

abstract：:The aim of this study was to determine whether the kaliuresis associated with glucocorticoids is due to a direct tubular action or is secondary to effects of glucocorticoids on distal tubule flow. A whole kidney technique was used to avoid the problem, inherent in microperfusion and micropuncture studies, of deciding ...

journal_title：Clinical and experimental pharmacology & physiology

authors： Adam WR,Adams BA,Ellis AG

更新日期：1987-01-01 00:00:00

abstract：:Hypertension developed within 5 weeks in uninephrectomized rats administered deoxycorticosterone acetate (DOCA, 30 mg/kg, s.c., weekly) and given isotonic saline to drink. Chronic dietary administration of tryptophan (50 g/kg food) reduced intake of saline solution and prevented the elevation of systolic blood pressur...

journal_title：Clinical and experimental pharmacology & physiology

authors： Fregly MJ,Fater DC

更新日期：1986-11-01 00:00:00

abstract：:The efficacy of streptokinase as an intracoronary thrombolytic agent is well-recognized. The effect of streptokinase, distinct from its thrombolytic action, on ischaemic myocardium distal to an area of coronary artery occlusion when reperfusion occurs has not been well-defined. In order to do this, myocardial creatine...

journal_title：Clinical and experimental pharmacology & physiology

authors： Mickelson JK,Carlson CJ,Margaretten W,Rapaport E

更新日期：1986-09-01 00:00:00

abstract：:Prostaglandin (PG) efflux into ureteral (UE) and venous effluents (VE) of rabbit isolated perfused kidneys was determined by superfusion bioassay and radioimmunoassay (RIA), in response to injections of arginine-vasopressin (AVP), the non-pressor vasopressin analogue 1-deamino-8-D-arginine vasopressin (dDAVP) and arac...

journal_title：Clinical and experimental pharmacology & physiology

authors： Miller MJ,Westlin WF,McNeill H,McGiff JC

更新日期：1986-08-01 00:00:00

abstract：:Responses of the toad isolated rectus abdominis muscle to cumulative doses of carbachol were recorded in the absence or presence of varying concentrations of cimetidine or ranitidine. The corresponding cumulative log concentration-response curves for carbachol were then plotted for each antagonist studied. Cimetidine ...

journal_title：Clinical and experimental pharmacology & physiology

authors： Gwee MC,Cheah LS,Shoon ML

更新日期：1986-08-01 00:00:00