abstract：:The inward transport of two purines, adenosine and hypoxanthine, at 37 degrees C by horse erythrocytes was compared. No mediated transport of adenosine was detected in horse erythrocytes, nor was saturable, high-affinity binding of the potent facilitated-diffusion inhibitor nitrobenzylthioinosine demonstrable in horse...

journal_title：Experimental physiology

authors： Jarvis SM,Harris RC

更新日期：1998-03-01 00:00:00

abstract：:The aim of this study was to determine the ouabain receptor density, Na+,K(+)-ATPase function and contractile properties of cardiac muscle in insulin-dependent and non-insulin-dependent rat diabetes mellitus (IDDM and NIDDM, respectively) and the reversibility of the diabetes-induced changes by insulin or thyroxin sub...

journal_title：Experimental physiology

authors： Bányász T,Kovács T

更新日期：1998-01-01 00:00:00

abstract：:The contractile regulation of neonatal smooth muscle was studied in rat neonatal portal vein. Strips of beta-escin-permeabilized portal vein from 3- to 5-day-old rats and 5- to 6-week-old rats were mounted on a 'bubble chamber' in calcium solutions buffered with 10 mM EGTA. Although the overall tension development was...

journal_title：Experimental physiology

authors： Bruce L,Nixon GF

更新日期：1997-11-01 00:00:00

abstract：:Cessation of milk removal causes mammary tissue involution, which in rodents is characterized by extensive tissue degeneration and loss of the majority of luminal epithelial cells by apoptosis. In contrast, bovine mammary tissue shows little histological evidence of tissue remodelling between lactations. In this study...

journal_title：Experimental physiology

authors： Wilde CJ,Addey CV,Li P,Fernig DG

更新日期：1997-09-01 00:00:00

abstract：:The effects of hypotonic solutions on intracellular Ca2+ were determined on primary cultures of human detrusor smooth muscle cells. In the presence of external Ca2+, changing from a solution containing 290 mosmol l-1 to one containing 240 mosmol l-1 (80% normal tonicity) activated a rise in intracellular Ca2+. If the ...

journal_title：Experimental physiology

authors： Chambers P,Neal DE,Gillespie JI

更新日期：1997-07-01 00:00:00

abstract：:Indirect evidence supporting a solute-coupled liquid absorption from the pleural space of rabbits has recently been provided; moreover, the beta 2-adrenoceptor agonist terbutaline has been found to increase this absorption. In this study the effect of adrenaline and alpha-adrenoceptor agonists on net rate of liquid ab...

journal_title：Experimental physiology

authors： Zocchi L,Raffaini A,Agostoni E

更新日期：1997-05-01 00:00:00

abstract：:The objective of the experiments was to investigate the cellular basis of the inotropic effect on myocardium of several opioids which have been implicated in producing cardiotoxic effects in human poisoning. Opioids exerted negative inotropic effects, with half-maximal concentrations between 10 microM (dextropropoxyph...

journal_title：Experimental physiology

authors： Wu C,Fry CH,Henry J

更新日期：1997-03-01 00:00:00

abstract：:Tumour cell survival is intimately related to blood vessel function and so the tumour vasculature represents a novel target for cancer therapy. We have investigated a murine tumour model in which a metal clamp was used to occlude the vascular supply temporarily and then removed to allow reperfusion. This allows the st...

journal_title：Experimental physiology

authors： Parkins CS,Hill SA,Stratford MR,Dennis MF,Chaplin DJ

更新日期：1997-03-01 00:00:00

abstract：:The effects of muscle fatigue on the mechanical efficiency of muscle work performance were studied in situ, in stretch-shortening cycles that resembled physiological conditions. The experiments were performed on the medial gastrocnemius muscles of seven rats. To calculate efficiency, a simple Hill-type model was used,...

journal_title：Experimental physiology

authors： Ettema GJ

更新日期：1997-01-01 00:00:00

abstract：:Intracellular pH (pHi) was measured in left ventricular myocytes from hearts hypertrophied by constriction of the thoracic aorta. There was a continuous relation between an increase in heart-to-body weight ratio and a decrease in pHi (mean +/- S.D., 7.06 +/- 0.18 pH units in control hearts vs. 6.87 +/- 0.17 pH units i...

journal_title：Experimental physiology

authors： Wallis WR,Wu C,Sheridan DJ,Fry CH

更新日期：1997-01-01 00:00:00

abstract：:In pentobarbitione-anaesthetized rats the parasympathetic auriculotemporal nerve of the parotid gland was continuously stimulated at supramaximal voltage and at maximal frequency (40 Hz) for salivary secretion. The animals were pretreated with phentolamine and propranolol (2 mg kg-1 i.p. of each) and, in some groups, ...

journal_title：Experimental physiology

authors： Ekström J,Asztély A,Tobin G

更新日期：1996-11-01 00:00:00

abstract：:The endothelial glycocalyx layer of capillaries was stained with Ruthenium Red and examined by transmission electron microscopy in rat extensor hallucis proprius muscles after 2 or 4 days of indirect electrical stimulation via implanted electrodes. The layer appeared continuous on the luminal surface of 63% capillarie...

journal_title：Experimental physiology

authors： Brown MD,Egginton S,Hudlicka O,Zhou AL

更新日期：1996-11-01 00:00:00

abstract：:This study was designed to investigate the putative neurophysiological effects of so-called 'H-wave therapy' (HWT), a form of electrical stimulation, upon conduction latencies in the human superficial radial nerve. Antidromic compound action potentials were recorded from the superficial radial nerve in the dominant fo...

journal_title：Experimental physiology

authors： McDowell BC,Lowe AS,Walsh DM,Baxter GD,Allen JM

更新日期：1996-09-01 00:00:00

abstract：:The role of bicarbonate as a hydrogen ion buffer has been investigated using the fluorescent dye BCECF in individual rat cerebellar, hippocampal and neocortical neurones maintained in culture. The steady-state intracellular pH (pHi) was estimated to be 7.07 +/- 0.05 (n = 22) in CO2-HCO3(-)-buffered media. Buffering po...

journal_title：Experimental physiology

authors： Amos BJ,Pocock G,Richards CD

更新日期：1996-07-01 00:00:00

abstract：:Flow of submandibular saliva and the constituents secreted during chorda-lingual nerve stimulation at 40 Hz (3 x 10 min) were studied after alpha- and beta-adrenergic blockade, and in the absence (control) or presence of cholinergic blockade in anaesthetized rats. Peroxidase and true tissue kallikrein (rK1) were asses...

journal_title：Experimental physiology

authors： Garrett JR,Anderson LC,Zhang XS,Proctor GB

更新日期：1996-05-01 00:00:00

abstract：:We measured plasma levels of L-arginine, its analogue NG-monomethyl-L-arginine (L-NMMA), and related amino acids in normal subjects and uraemic patients (n = 31), before and after haemodialysis. Plasma levels of L-arginine were reduced to less than half of normal values in uraemic subjects compared with controls, and ...

journal_title：Experimental physiology

authors： Mendes Ribeiro AC,Roberts NB,Lane C,Yaqoob M,Ellory JC

更新日期：1996-05-01 00:00:00

abstract：:The intrinsic proton buffering power (beta 1) of individual rat hippocampal and neocortical neurones maintained in culture has been investigated using the fluorescent dye 2', 7'-bis(carboxymethyl)-5, 6-(carboxyfluorescein) (BCECF). The steady-state intracellular pH (pH1) was estimated to be 7.03 +/- 0.04 (n = 22) in H...

journal_title：Experimental physiology

authors： Amos BJ,Richards CD

更新日期：1996-03-01 00:00:00

abstract：:The effects of microinjections of adenosine and an adenosine receptor antagonist into the rostral ventrolateral medulla (RVLM) on the cardiovascular changes associated with the defence reaction were investigated in anaesthetized rats. Responses to electrical and chemical stimulation in RVLM were determined in alpha-ch...

journal_title：Experimental physiology

authors： Thomas T,Spyer KM

更新日期：1996-01-01 00:00:00

abstract：:The present work reports the effect of pHo on pHi and Na(+)-H+ exchanger activity. Intracellular pH tended to follow pHo, but the proton distribution across the cell membrane is not at electrochemical equilibrium. Removal of external Na+ acidified the cells by both reversing the direction of the Na(+)-H+ exchanger and...

journal_title：Experimental physiology

authors： Peral MJ,Calonge ML,Ilundáin AA

更新日期：1995-11-01 00:00:00

abstract：:Changes in tension of slow motor units in the medial gastrocnemius muscle of the rat were measured and compared in three fatigue tests, each of 4 min duration. In one of these tests motor unit tetani were evoked by repeated trains of stimuli of the standard frequency, 40 Hz, while in other tests frequencies of 20 and ...

journal_title：Experimental physiology

authors： Celichowski J,Grottel K

更新日期：1995-11-01 00:00:00

abstract：:The effect of mechanical loading on the negative inotropic effect of acidosis in isolated rat ventricular myocytes was investigated. The mechanical loading of the myocytes was changed by attaching carbon fibres to the ends of the cell. To monitor intracellular Ca2+ and Na+ concentrations, cells were loaded with fluore...

journal_title：Experimental physiology

authors： Hongo K,White E,Orchard CH

更新日期：1995-09-01 00:00:00

abstract：:Using the patch-clamp recording technique, we observed that endothelin-1 (ET-1; 0.8-16 nM) enhanced a voltage-activated outward current (Iout) and induced periodic oscillations of inward current in smooth muscle cells isolated from small pulmonary arteries (200-400 microns in diameter). Anion substitution experiments ...

journal_title：Experimental physiology

authors： Salter KJ,Turner JL,Albarwani S,Clapp LH,Kozlowski RZ

更新日期：1995-09-01 00:00:00

abstract：:The pathogenesis of the vasodilatation associated with liver cirrhosis is not fully understood, but it has recently been postulated that it may be related to an increase in nitric oxide production. The aim of this study was to compare the response of isolated aortic rings from normal and cirrhotic rats to two vasocons...

journal_title：Experimental physiology

authors： Van Obbergh L,Leonard V,Chen H,Xu D,Blaise G

更新日期：1995-07-01 00:00:00

abstract：:An imaging technique (laser Doppler perfusion imaging, LDI), based on measurement of backscattered Doppler-broadened laser radiation, was used to provide two-dimensional images of perfusion in the exposed rat knee joint capsule. In control animals, frequency-dependent constriction of knee joint blood vessels occurred ...

journal_title：Experimental physiology

authors： Karimian SM,McDougall JJ,Ferrell WR

更新日期：1995-05-01 00:00:00

abstract：:In the present study, the ontogenic changes in gluconeogenic enzyme activities and in hepatic glycogen and beta-adrenergic receptor levels were investigated in fetal pigs from 70 days of gestation until delivery at term (114 +/- 2 days). The values were compared with those observed in fetuses infused subcutaneously wi...

journal_title：Experimental physiology

authors： Fowden AL,Apatu RS,Silver M

更新日期：1995-05-01 00:00:00

abstract：:Electromyographic recordings (EMGs) were made from the active masseter muscle, of the inhibitory reflex evoked by application of electrical stimuli to the skin of the upper lip in fifteen human subjects. In control sequences, the reflex had a mean latency of 42 +/- 1.1 ms and a mean duration of 45 +/- 2.1 ms. The magn...

journal_title：Experimental physiology

authors： Cadden SW,Newton JP

更新日期：1995-03-01 00:00:00

abstract：:In anaesthetized cats, reflex respiratory responses were evoked by electrically stimulating proximal ends of cut nerves to gastrocnemius-soleus muscles of the left hindlimb. The direction of these responses, in the excitatory or inhibitory sense, depended on the types of afferent fibres stimulated and on the mode of s...

journal_title：Experimental physiology

authors： Decandia M,Orani GP

更新日期：1995-01-01 00:00:00

abstract：:The study examined the effect of salt-induced hypertension on vascular relaxation in response to magnesium sulphate during pregnancy. Pregnant Wistar rats were fed for 6 weeks on a diet containing 0.3% (control) and 8.0% (test) sodium chloride. Aortic rings were then removed and contracted with 10(-7) M phenylephrine ...

journal_title：Experimental physiology

authors： Aloamaka CP,Ezimokhai M,Osman NA,Morrison J

更新日期：1995-01-01 00:00:00

abstract：:Luminal fluids were collected in vivo by micropuncture and cannulation from the rete testis, efferent ducts and ductus epididymidis of the rat to determine the composition of efferent duct fluids and the rates of reabsorption of water and solutes by the efferent ducts. The concentration of spermatozoa increased by a f...

journal_title：Experimental physiology

authors： Clulow J,Jones RC,Hansen LA

更新日期：1994-11-01 00:00:00

abstract：:Pairs of Ia and II afferent fibres supplying primary and secondary endings lying in the same tenuissimus spindles were prepared in barbiturate anaesthetized cats in order to compare the variability in the rhythm of discharge of the two endings during responses elicited by the contraction of different intrafusal muscle...

journal_title：Experimental physiology

authors： Celichowski J,Emonet-Dénand F,Gladden M,Laporte Y,Petit J

更新日期：1994-09-01 00:00:00

abstract：:The properties of two types of calcium current (ICa(T) and ICa(L)) and their relationship with contraction were studied in isolated frog atrial trabeculae using the double mannitol gap technique. In Ringer solution containing TTX the calcium currents observed are similar to the ICa(T) and ICa(L) found in single frog a...

journal_title：Experimental physiology

authors： Badaoui A,Léoty C

更新日期：1994-09-01 00:00:00

abstract：:We have examined the effect of a hyposmotic shock, and thus cell swelling, upon the efflux of amino acids, SO4(2-) and I- from lactating mammary tissue. A hyposmotic challenge increased the efflux of taurine and glycine via a 4,4'-diisothiocyanatostilbene-2,2'- disulphonic acid (DIDS)-sensitive pathway. It appears tha...

journal_title：Experimental physiology

authors： Shennan DB,McNeillie SA,Curran DE

更新日期：1994-09-01 00:00:00

abstract：:The effect of unilateral Achilles' tendon section on the soleus muscle of rabbits was examined after 2 and 4 weeks of unsutured recovery. Immobilization of the limb during recovery was also investigated. Following tendon section the limb was immobilized with an ankle angle of 90 deg, and final experiments were perform...

journal_title：Experimental physiology

authors： Barry JA,Cotter MA,Cameron NE,Pattullo MC

更新日期：1994-07-01 00:00:00

abstract：:Phosphoethanolamine and taurine have been identified in uterine extracts from rat and, for the first time, human tissue. The concentration of phosphoethanolamine [PEtn] determined by HPLC and 31P NMR spectroscopy, increased markedly (40%) within the first 6-12 h following parturition in rats, suggesting a role in invo...

journal_title：Experimental physiology

authors： Phoenix J,Wray S

更新日期：1994-07-01 00:00:00

abstract：:Contractile properties and fibre type composition of slow-twitch soleus muscles from spontaneously hypertensive rats (SHR) were compared with those from a control normotensive strain (Wistar-Kyoto, WKY). Male rats aged around 100 days were used, and muscle tension was recorded isometrically in vitro. Tetanic tension w...

journal_title：Experimental physiology

authors： Lewis DM,Levi AJ,Brooksby P,Jones JV

更新日期：1994-05-01 00:00:00

abstract：:In order to investigate the effect of chronic sodium depletion on renal proximal tubular reabsorption, studies were performed in conscious, unrestrained Brattleboro rats. Since these animals lack circulating vasopressin, fractional water reabsorption in the distal nephron can be assumed to be constant and changes in u...

journal_title：Experimental physiology

authors： Shirley DG,Skinner J

更新日期：1994-03-01 00:00:00

abstract：:Hypoxia has been reported to increase arterial potassium concentration ([K+]a) in anaesthetized cats (Paterson, Estavillo & Nye, 1988). The purpose of this study was to determine whether this phenomenon occurs in humans. The effect of hypoxia on [K+]a was measured in ten male subjects, at rest and during light exercis...

journal_title：Experimental physiology

authors： Barlow CW,Qayyum MS,Davey PP,Paterson DJ,Robbins PA

更新日期：1994-03-01 00:00:00

abstract：:Uterine and umbilical blood flows were measured in pregnant sheep (125-142 days gestation) under normothermic and hyperthermic conditions using the Fick principle with [14C]antipyrine as the indicator. Exposure of the sheep to an ambient temperature of 43 +/- 1 degrees C (25-30% relative humidity) for 8 h increased ma...

journal_title：Experimental physiology

authors： Andrianakis P,Walker D

更新日期：1994-01-01 00:00:00

abstract：:Experiments were performed to investigate, in the normal and acutely inflamed rabbit knee joint, the role of prostaglandins in the regulation of joint blood flow, measured by laser Doppler flowmetry, as well as their modulation of sympathetic vasoconstriction. Close intra-arterial injection of prostaglandin E2 (PGE2) ...

journal_title：Experimental physiology

authors： Najafipour H,Ferrell WR

更新日期：1994-01-01 00:00:00

abstract：:We have examined the surface ultrastructure and morphological characteristics of leucocytes obtained from control rats breathing air and rats made acutely hypoxic (breathing 6% O2, for 30 min). Striking ultrastructural and morphological changes occurred in the leucocytes of hypoxic rats. These changes included the app...

journal_title：Experimental physiology

authors： Mian R,Westwood D,Stanley P,Marshall JM,Coote JH

更新日期：1993-11-01 00:00:00