abstract：:Spermine is a low molecular weight polyamine involved in the postnatal maturation of the gut. When it is administered orally to suckling rats, it induces maturation of the intestinal tract (liver, pancreas and small intestine). Here we show that this polyamine is able to induce precocious intestinal and splenic develo...

journal_title：Experimental physiology

authors： Jolois O,Peulen O,Collin S,Simons M,Dandrifosse G,Heinen E

更新日期：2002-01-01 00:00:00

abstract：:Very brief and intense exercise triggers a biphasic metabolic and respiratory response with a second phase that occurs after the cessation of the muscular activity. The effects on minute ventilation (V(E)) produced by manipulation of the peripheral circulation in metabolically active muscles could thus be studied with...

journal_title：Experimental physiology

authors： Haouzi P,Chenuel B,Chalon B

更新日期：2001-11-01 00:00:00

abstract：:The hypotensive and vasorelaxing peptides adrenomedullin (AM) and its gene-related peptide, proadrenomedullin N-terminal 20 peptide (PAMP), were found to be distributed on the surface of the colonic mucosa. AM and PAMP showed dose-dependent antimicrobial activity against E. coli. The results suggest that the novel vas...

journal_title：Experimental physiology

authors： Marutsuka K,Nawa Y,Asada Y,Hara S,Kitamura K,Eto T,Sumiyoshi A

更新日期：2001-09-01 00:00:00

abstract：:The glucagon response to insulin-induced hypoglycaemia was tested in rats that had been pinealectomised (Px), pinealectomised and fitted with melatonin implants (Px + MLT), or sham-operated (SO). The glucagon response to hypoglycaemia observed in SO rats (216 +/- 27 pg x ml(-1) at baseline versus 397 +/- 35 pg x ml(-1...

journal_title：Experimental physiology

authors： Kosa E,Maurel D,Siaud P

更新日期：2001-09-01 00:00:00

abstract：:In this study we tested the hypothesis that, compared to young adult rats, senescent rats have a reduced ability to respond to muscle unloading. Unloading of the muscles was induced by hindlimb suspension (HS) of young adult and senescent rats for 21 days. Plantaris muscles from young adult rats had significantly high...

journal_title：Experimental physiology

authors： Alway SE,Lowe DA,Chen KD

更新日期：2001-07-01 00:00:00

abstract：:The present investigation was designed to examine whether calmodulin is involved in the inhibition of the ATP-sensitive K+ (K(ATP)) channel by glucagon-like peptide 1(7-36) amide (GLP-1) in mouse pancreatic beta-cells. Membrane potential, single channel and whole-cell currents through the K(ATP) channels, and intracel...

journal_title：Experimental physiology

authors： Ding WG,Kitasato H,Matsuura H

更新日期：2001-05-01 00:00:00

abstract：:Lower body negative pressure (LBNP) reduces central venous pressure (CVP) and cardiac output. The elderly are reported to have a limited capacity to increase cardiac output by increasing heart rate (HR), are especially dependent on end diastolic volume to maintain stroke volume and therefore should be especially vulne...

journal_title：Experimental physiology

authors： van Hoeyweghen R,Hanson J,Stewart MJ,Dethune L,Davies I,Little RA,Horan MA,Kirkman E

更新日期：2001-05-01 00:00:00

abstract：:Oxidants have been suggested to enhance contractile function in unfatigued muscle. In this study we aimed to determine the effect of oxidants on "chemically skinned" diaphragm muscle fibre bundles. The sarcoplasmic reticulum and contractile proteins were exposed to superoxide anions (O2-) and hydrogen peroxide (H2O2) ...

journal_title：Experimental physiology

authors： Darnley GM,Duke AM,Steele DS,MacFarlane NG

更新日期：2001-03-01 00:00:00

abstract：:In this review we discuss our current understanding of the cellular basis of uterine contractility, highlighting those areas requiring further study. It is clear that the basic processes of excitation-contraction coupling lie within the myometrial cell, and that these may be modified by agonists. Pacemaker activity, h...

journal_title：Experimental physiology

authors： Wray S,Kupittayanant S,Shmygol A,Smith RD,Burdyga T

更新日期：2001-03-01 00:00:00

abstract：:Increased fetal lung expansion, induced by tracheal obstruction (TO), is a potent stimulus for fetal lung growth, but rapidly reduces surfactant protein (SP) mRNA levels. Our aim was to determine the time course for the re-expression of the surfactant proteins in fetal lung tissue following the release of a TO and to ...

journal_title：Experimental physiology

authors： Lines A,Gillett AM,Phillips ID,Wallace MJ,Hooper SB

更新日期：2001-01-01 00:00:00

abstract：:Embryonic stem (ES) cells are pluripotent cells isolated from the inner cell mass of blastocysts. ES cells are able to differentiate into the three primitive layers (endoderm, mesoderm and ectoderm) of the organism, including the germline. To study early stages of development, as well as to investigate the impact of a...

journal_title：Experimental physiology

authors： Desbaillets I,Ziegler U,Groscurth P,Gassmann M

更新日期：2000-11-01 00:00:00

abstract：:Altering [K+]o might have different effects on action potential duration (APD) in myocytes from different regions. Therefore, the effects of [K+]o on regional differences in action potential characteristics were investigated in sub-endocardial, mid-myocardial and sub-epicardial myocytes isolated from the base of guine...

journal_title：Experimental physiology

authors： Wan X,Bryant SM,Hart G

更新日期：2000-11-01 00:00:00

abstract：:Oscillations in the cardiovascular system have been observed in patients with periodic breathing. It is not clear whether these are driven by primary oscillations in the respiratory system or whether an intrinsic cardiovascular instability is required, as previous studies with subjects performing voluntary periodic br...

journal_title：Experimental physiology

authors： Davies LC,Francis DP,Crisafulli A,Concu A,Coats AJ,Piepoli M

更新日期：2000-11-01 00:00:00

abstract：:The purpose of the present study was to characterize the Ca2+ channels in smooth muscle cells from human stomach and to examine the effects of osmotic swelling on the channel activity. Ca2+ channel current with either Ca2+ or Ba2+ as charge carrier was recorded from freshly isolated smooth muscle cells using the conve...

journal_title：Experimental physiology

authors： Kim CH,Rhee PL,Rhee JC,Kim YI,So I,Kim KW,Park MK,Uhm DY,Kang TM

更新日期：2000-09-01 00:00:00

abstract：:This study examined the effect of pre-exercise carbohydrate (CHO) ingestion on pyruvate dehydrogenase complex (PDC) activation, acetyl group availability and substrate level phosphorylation (glycogenolysis and phosphocreatine (PCr) hydrolysis) in human skeletal muscle during the transition from rest to steady-state ex...

journal_title：Experimental physiology

authors： Tsintzas K,Williams C,Constantin-Teodosiu D,Hultman E,Boobis L,Greenhaff P

更新日期：2000-09-01 00:00:00

abstract：:This study was undertaken to determine the reflex cardiovascular and respiratory responses to discrete stimulation of pulmonary arterial baroreceptors using a preparation in which secondary modulation of responses from other reflexes was prevented. Dogs were anaesthetised with -chloralose, artificially ventilated, the...

journal_title：Experimental physiology

authors： McMahon NC,Drinkhill MJ,Myers DS,Hainsworth R

更新日期：2000-07-01 00:00:00

abstract：:Resting heart rate and heart rate variability of 33 postmenopausal women were compared with those of 50 premenopausal women of comparable activity level, none of whom had used hormone replacement therapy. Heart rate was measured as the mean of at least 600 consecutive R-R intervals obtained from electrocardiograph (EC...

journal_title：Experimental physiology

authors： Brockbank CL,Chatterjee F,Bruce SA,Woledge RC

更新日期：2000-05-01 00:00:00

abstract：:Animal studies show that arginine vasopressin facilitates aggression, while serotonin (5-HT) inhibits aggression by blocking the activity of the vasopressin system. Clinical studies report that subjects with a history of 'fighting and assault' show a significant positive correlation between cerebrospinal fluid concent...

journal_title：Experimental physiology

authors： Ferris CF

更新日期：2000-03-01 00:00:00

abstract：:Vasopressin and oxytocin release from the neural lobe, and the vasopressin and oxytocin mRNA contents of the supraoptic and paraventricular nuclei are increased by hypertonicity of the extracellular fluid. The factors regulating these parameters can be conveniently studied in perifused explants of the hypothalamo-neur...

journal_title：Experimental physiology

authors： Sladek CD,Swenson KL,Kapoor R,Sidorowicz HE

更新日期：2000-03-01 00:00:00

abstract：:The precise role of vasopressin in the pathophysiology of cardiovascular disease is controversial, but this peptide hormone is important for several reasons. Firstly, circulating concentrations of vasopressin are elevated in heart failure and some forms of hypertension. Secondly, there is evidence that vasopressin is ...

journal_title：Experimental physiology

authors： Burrell LM,Risvanis J,Johnston CI,Naitoh M,Balding LC

更新日期：2000-03-01 00:00:00

abstract：:We investigated the permeability of Cs+ and Na+ through various ion channels in rat atrial myocytes using the whole-cell voltage-clamp technique. With isotonic CsCl (140 mM) on both sides of the membrane and nominally [Ca2+]o-free conditions, depolarising clamp pulses induced an increase of outward currents which show...

journal_title：Experimental physiology

authors： Youm JB,Ho WK,Earm YE

更新日期：2000-03-01 00:00:00

abstract：:Neural mediation of the human cardiac response to isocapnic (IC) steady-state hypoxaemia was investigated using coarse-graining spectral analysis of heart rate variability (HRV). Six young adults were exposed in random order to a hypoxia or control protocol, in supine and sitting postures, while end-tidal PCO2 (PET,CO...

journal_title：Experimental physiology

authors： Lucy SD,Hughson RL,Kowalchuk JM,Paterson DH,Cunningham DA

更新日期：2000-03-01 00:00:00

abstract：:Ionic mechanisms and signal transduction underlying noradrenaline (NA)-induced depolarization in single smooth muscle cells of guinea-pig vas deferens were studied. NA caused depolarization followed by action potentials through activation of 1-adrenoceptors. In the presence of nifedipine, no action potential was gener...

journal_title：Experimental physiology

authors： Kamimura N,Suga S,Nakano K,Kanno T,Takeo T,Wakui M

更新日期：2000-01-01 00:00:00

abstract：:We recently reported that a higher percentage of type I fibres in vastus lateralis and a greater peak oxygen uptake (O2) were associated with a greater initial rise in O2 (O2 /W, where W is work rate) following the onset of heavy constant power output exercise (above the lactate threshold, LT). It was unclear if these...

journal_title：Experimental physiology

authors： Barstow TJ,Jones AM,Nguyen PH,Casaburi R

更新日期：2000-01-01 00:00:00

abstract：:We have functionally expressed and identified a monocarboxylate transporter (MCT1) from rat jejunal enterocyte and we provide evidence for its basolateral localization. Poly(A)+ RNA isolated from rat jejunum was injected into Xenopus laevis oocytes and expression of a proton-lactate symporter was investigated by means...

journal_title：Experimental physiology

authors： Orsenigo MN,Tosco M,Bazzini C,Laforenza U,Faelli A

更新日期：1999-11-01 00:00:00

abstract：:The purpose of the present study was to investigate the effect of temperature on the rates of isometric force development and relaxation in electrically activated fresh and fatigued human adductor pollicis muscle. Following immersion of the lower arm for 20 min in water baths of four different temperatures, muscle tem...

journal_title：Experimental physiology

authors： de Ruiter CJ,Jones DA,Sargeant AJ,de Haan A

更新日期：1999-11-01 00:00:00

abstract：:Mechanical properties of the vascular smooth muscle from normal and dystrophin-deficient (mdx) mice were examined. Changes in resting and developed tensions in response to stretch were recorded in isolated portal vein. The vascular segments were elongated in 5 % increments of the 'in situ' length (Lr) up to 1.30Lr. Th...

journal_title：Experimental physiology

authors： Mancinelli R,Tonali P,Romani R,Tringali A,Vargiu R,AZZENA GB

更新日期：1999-09-01 00:00:00

abstract：:We have demonstrated that the fluorescent microsphere technique can be used in small mammals for accurate determination of regional blood flows. In particular we have shown that 100% recovery of trapped microspheres is possible, that tissue digestion can be completed in a shorter time than previously reported, and the...

journal_title：Experimental physiology

authors： Deveci D,Egginton S

更新日期：1999-07-01 00:00:00

abstract：:A video-laryngoscopic method, implemented with an algorithm for the correction of the deformation inherent in the endoscope optical system, has been used to measure the dorsoventral diameter (Drg) and the cross-sectional area (CSArg) of the rima glottidis in five healthy workhorses during conscious breathing at rest. ...

journal_title：Experimental physiology

authors： Lafortuna CL,Albertini M,Ferrucci F,Zucca E,Braghieri M,Clement MG,Saibene F

更新日期：1999-07-01 00:00:00

abstract：:In vivo microperfusion techniques were used to investigate the role of Na+-H+ exchange in the efferent ducts of the rat. Individual efferent ducts were perfused with a Krebs-Ringer bicarbonate solution (KRB) containing 0, 1, 3, 5 or 7.5 mM amiloride. Concentrations of 1-5 mM amiloride inhibited fluid reabsorption from...

journal_title：Experimental physiology

authors： Hansen LA,Clulow J,Jones RC

更新日期：1999-05-01 00:00:00

abstract：:Transport of a number of dipolar amino acids (and the orally active antibiotic D-cycloserine) across the apical membrane of human intestinal epithelial (Caco-2) cell monolayers is mediated by a Na+-independent, pH-dependent transport mechanism. Relatively little is known about the mode of action of this transport syst...

journal_title：Experimental physiology

authors： Thwaites DT,Stevens BC

更新日期：1999-03-01 00:00:00

abstract：:This study compared the concentration of ethanol, both absolute and relative to water content, in sweat and blood. Ten male volunteers consumed approximately 13 mmol (kg body weight)-1 of ethanol. Blood and sweat samples were collected approximately 1, 2 and 3 h following ingestion. Sweat was collected following piloc...

journal_title：Experimental physiology

authors： Buono MJ

更新日期：1999-03-01 00:00:00

abstract：:Rats were submitted to 14 days of hindlimb suspension in order to examine the contractile and elastic properties of the soleus muscles under disuse conditions. The calcium/strontium activation properties, the maximal shortening velocity (V0), as well as the time behaviour of force transients following quick releases a...

journal_title：Experimental physiology

authors： Toursel T,Stevens L,Mounier Y

更新日期：1999-01-01 00:00:00

abstract：:Lateral ventricular volumes were monitored and quantified using accurately registered magnetic resonance images (MRIs) in six healthy individuals 30 min before and up to 4 h after ingestion of a glucose drink. The volume of the lateral ventricles increased by an average (+/- S.E.M.) of 2.4 +/- 0.4% as blood glucose le...

journal_title：Experimental physiology

authors： Puri BK,Lewis HJ,Saeed N,Davey NJ

更新日期：1999-01-01 00:00:00

abstract：:The effects of exogenous arginine vasotocin (AVT), isotocin (IT) and melatonin on the blood pressure of conscious Atlantic cod (Gadus morhua) were examined. Ventral aortic blood pressure (PVA) was recorded from a cannula inserted into the afferent branchial artery of the third gill arch. Dorsal aortic blood pressure (...

journal_title：Experimental physiology

authors： Kulczykowska E

更新日期：1998-11-01 00:00:00

abstract：:A stress protocol--6 h of daily immobilization--was applied throughout male rat sexual development. Immobilization caused a small reduction in food intake and body weight gain whereas pair-fed animals had a marginal decrease only in body weight gain. Stress, confirmed by increased plasma adrenocorticotrophic hormone (...

journal_title：Experimental physiology

authors： Almeida SA,Anselmo-Franci JA,Rosa e Silva AA,Carvalho TL

更新日期：1998-09-01 00:00:00

abstract：:The aim of this study was to evaluate whether long-term administration of L-arginine, a physiological substrate for the production of nitric oxide, improved blood pressure, heart rate, cardiac hypertrophy and particularly structural changes in the coronary and carotid artery of spontaneously hypertensive rats (SHR). T...

journal_title：Experimental physiology

authors： Kristek F

更新日期：1998-09-01 00:00:00

abstract：:After 2 months of streptozotocin-induced diabetes in rats, the membrane potential of the diaphragm muscle when measured in vitro at 30 degrees C was unchanged but the tetanic tension, the half-relaxation time of the isometric twitch and the fatigue resistance were each reduced. Treatment of the diabetic rats with the ...

journal_title：Experimental physiology

authors： McGuire M,MacDermott M

更新日期：1998-07-01 00:00:00

abstract：:A method is described that enables the cell membrane of isolated rat ventricular myocytes to be permeabilized and resealed while maintaining cell viability. Streptolysin O, a cholesterol-binding cytolysin, was used to form pores in the surface membrane; subsequent incubation with 5% fetal bovine serum was used to reve...

journal_title：Experimental physiology

authors： Fawcett JM,Harrison SM,Orchard CH

更新日期：1998-05-01 00:00:00

abstract：:The neurohypophysial hormone vasopressin contributes to control of urine output and, while urine flow shows a clear daily rhythm, there has been debate as to whether this is true of neurohypophysial hormones. A study was performed on fifteen adult males, with a mean age of 25 years, over a 24 h period, nine blood samp...

journal_title：Experimental physiology

authors： Forsling ML,Montgomery H,Halpin D,Windle RJ,Treacher DF

更新日期：1998-05-01 00:00:00