abstract：:One of the most basic computational elements within a circuit is the synapse across which signals are transferred. Here we summarize some experimental strategies that allow the synaptic basis of circuit function to be studied through imaging. The two most promising approaches available currently are pHluorin-based rep...

journal_title：Experimental physiology

authors： Dreosti E,Lagnado L

更新日期：2011-01-01 00:00:00

abstract：:The uptake and distribution of CO throughout the circulatory system during two different methods of CO rebreathing (2 min 'Schmidt' and 40 min 'Burge' methods) were determined in nine healthy volunteers. Specifically, the impact of (i) differences in circulatory mixing time (t(mix)), (ii) CO diffusion to myoglobin (Mb...

journal_title：Experimental physiology

authors： Garvican LA,Burge CM,Cox AJ,Clark SA,Martin DT,Gore CJ

更新日期：2010-12-01 00:00:00

abstract：:The sympathetic neural regulation of the cerebral circulation remains controversial. The purpose of the present study was to determine how exercise modulates the simultaneous responsiveness of the cerebral and brachial circulations to 'endogenous' sympathetic activation (cold pressor test). In nine healthy subjects, h...

journal_title：Experimental physiology

authors： Hartwich D,Fowler KL,Wynn LJ,Fisher JP

更新日期：2010-11-01 00:00:00

abstract：:Brain blood vessels contain muscarinic receptors that are important for cerebral blood flow (CBF) regulation, but whether a cholinergic receptor mechanism is involved in the exercise-induced increase in cerebral perfusion or affects cerebral metabolism remains unknown. We evaluated CBF and cerebral metabolism (from ar...

journal_title：Experimental physiology

authors： Seifert T,Fisher JP,Young CN,Hartwich D,Ogoh S,Raven PB,Fadel PJ,Secher NH

更新日期：2010-10-01 00:00:00

abstract：:We estimated the transfer function of autonomic heart rate (HR) control by using random binary sympathetic or vagal nerve stimulation in anaesthetized rats. The transfer function from sympathetic stimulation to HR response approximated a second-order, low-pass filter with a lag time (gain, 4.29 +/- 1.55 beats min(1) H...

journal_title：Experimental physiology

authors： Mizuno M,Kawada T,Kamiya A,Miyamoto T,Shimizu S,Shishido T,Smith SA,Sugimachi M

更新日期：2010-09-01 00:00:00

abstract：:The renin-angiotensin system is activated in the early phase of two-kidney, one-clip (2K-1C) hypertension. The paraventricular nucleus (PVN) integrates inputs regulating sympathetic outflow. The PVN receives inputs from plasma angiotensin II via projections from circumventricular organs and from renal afferent nerves ...

journal_title：Experimental physiology

authors： Rossi NF,Maliszewska-Scislo M,Chen H,Black SM,Sharma S,Ravikov R,Augustyniak RA

更新日期：2010-08-01 00:00:00

abstract：:Metabolic stress is believed to constitute an important signal for training-induced adjustments of gene expression and oxidative capacity in skeletal muscle. We hypothesized that the effects of endurance training on expression of muscle-relevant transcripts and ultrastructure would be specifically modified by a hypoxi...

journal_title：Experimental physiology

authors： Schmutz S,Däpp C,Wittwer M,Durieux AC,Mueller M,Weinstein F,Vogt M,Hoppeler H,Flück M

更新日期：2010-06-01 00:00:00

abstract：:Hypertension caused by chronic infusion of angiotensin II (Ang II) in experimental animals is likely to be mediated, at least in part, by an elevation of ongoing sympathetic nerve activity (SNA). However, the contribution of SNA relative to non-neural mechanisms in mediating Ang II-induced hypertension is an area of i...

journal_title：Experimental physiology

authors： Toney GM,Pedrino GR,Fink GD,Osborn JW

更新日期：2010-05-01 00:00:00

abstract：:Severe-intensity constant-work-rate exercise results in the attainment of maximal oxygen uptake, but the muscle metabolic milieu at the limit of tolerance (T(lim)) for such exercise remains to be elucidated. We hypothesized that T(lim) during severe-intensity exercise would be associated with the attainment of consist...

journal_title：Experimental physiology

authors： Vanhatalo A,Fulford J,DiMenna FJ,Jones AM

更新日期：2010-04-01 00:00:00

abstract：:Expression of reelin, reelin receptors [apolipoprotein E receptor 2 (ApoER2) and very low density lipoprotein receptor (VldlR)] and the Disabled-1 (Dab1) protein was investigated in rat intestinal mucosa. Intestinal reelin and Dab1 mRNA levels were maximal in the early stages of life, reaching adult levels in 1-month-...

journal_title：Experimental physiology

authors： García-Miranda P,Peral MJ,Ilundain AA

更新日期：2010-04-01 00:00:00

abstract：:The effects of direct autonomic nerve stimulation on the heart may be quite different to those of perfusion with pharmacological neuromodulating agents. This study was designed to investigate the effect of autonomic nerve stimulation on intracellular calcium fluorescence using fura-2 AM in the isolated Langendorff-per...

journal_title：Experimental physiology

authors： Brack KE,Coote JH,Ng GA

更新日期：2010-01-01 00:00:00

abstract：:A great deal of knowledge exists regarding neural control of myocardial function in the rat. Most of the studies addressing this issue were conducted either under general anaesthesia or in isolated hearts in vitro. Our principal aim was to provide a detailed quantitative description of mechanisms controlling cardiac c...

journal_title：Experimental physiology

authors： Nalivaiko E,Antunes VR,Paton JF

更新日期：2010-01-01 00:00:00

abstract：:Appreciation for the role of aldosterone and mineralocorticoid receptors in cardiovascular disease is accelerating rapidly. Recent experimental work has unveiled a strong relationship between brain mineralocorticoid receptors and sympathetic drive, an important determinant of outcome in heart failure and hypertension....

journal_title：Experimental physiology

authors： Felder RB

更新日期：2010-01-01 00:00:00

abstract：:5-[5-(2-Nitrophenyl) furfuryliodine]-1,3-diphenyl-2-thiobarbituric acid (UCF-101) is a protease inhibitor which was reported to protect against ischaemic heart damage and apoptosis. This study evaluated the impact of UCF-101 on steptozotocin (STZ)-induced diabetic cardiomyocyte dysfunction. Adult FVB mice were made di...

journal_title：Experimental physiology

authors： Li Q,Hueckstaedt LK,Ren J

更新日期：2009-09-01 00:00:00

abstract：:The objective of this study was to examine the potential of stearic acid to induce cardiomyocyte cell death and the hypothesis that the amount of cellular lipid is a determinant of cell death. In cardiomyocytes from embryonic chick heart, stearic acid (SA) produced a significant (P < 0.001) concentration-dependent inc...

journal_title：Experimental physiology

authors： Rabkin SW,Lodhia P

更新日期：2009-08-01 00:00:00

abstract：:The aim of the present study was to assess the influence of body posture on post-submaximal exercise parasympathetic reactivation and to examine whether this influence was preserved under a heightened sympathetic background. On four occasions, eleven moderately trained subjects (22.1 +/- 3.0 years old) performed, in r...

journal_title：Experimental physiology

authors： Buchheit M,Al Haddad H,Laursen PB,Ahmaidi S

更新日期：2009-07-01 00:00:00

abstract：:In mammals, including man, epidemiological and experimental studies have shown that a range of environmental factors acting during critical periods of early development can alter adult phenotype. Hormones have an important role in these epigenetic modifications and can signal the type, severity and duration of the env...

journal_title：Experimental physiology

authors： Fowden AL,Forhead AJ

更新日期：2009-06-01 00:00:00

abstract：:This work was undertaken to study the effect of pectin feeding on the expression level, cellular localization and functional activity of monocarboxylate transporter 1 (MCT1) in the gastrointestinal tract of rats. The results indicated that MCT1 protein level was significantly increased along the entire length of the g...

journal_title：Experimental physiology

authors： Kirat D,Kondo K,Shimada R,Kato S

更新日期：2009-04-01 00:00:00

abstract：:Arterial pressure is regulated over long periods of time by neural, hormonal and local control mechanisms, which ultimately determine the total blood volume and how it is distributed between the various vascular compartments of the circulation. A full understanding of the complex interplay of these mechanisms can be g...

journal_title：Experimental physiology

authors： Osborn JW,Averina VA,Fink GD

更新日期：2009-04-01 00:00:00

abstract：:Age is a primary risk factor for cardiovascular disease, and this is an increasingly important public health concern because of an increase in the absolute number and proportion of the population at an older age in many countries. A key component of cardiovascular ageing is reduced function of the vascular endothelium...

journal_title：Experimental physiology

authors： Gates PE,Strain WD,Shore AC

更新日期：2009-03-01 00:00:00

abstract：:Joint movement was recently shown to stimulate the secretion of the lubricant hyaluronan (HA); also, exercise therapy and intra-articular hyaluronan injections are used to treat moderate osteoarthritis. The present study quantifies the stimulus-response curves for HA secretion in vivo and reports a role of transcripti...

journal_title：Experimental physiology

authors： Wann AK,Ingram KR,Coleman PJ,McHale N,Levick JR

更新日期：2009-03-01 00:00:00

abstract：:Obstructive sleep apnoea (OSA) leads to chronic intermittent hypoxia (CIH) during sleep. Obstructive sleep apnoea has been associated with liver injury. Acetaminophen (APAP; known as paracetamol outside the USA) is one of the most commonly used drugs which has known hepatotoxicity. The goal of the present study was to...

journal_title：Experimental physiology

authors： Savransky V,Reinke C,Jun J,Bevans-Fonti S,Nanayakkara A,Li J,Myers AC,Torbenson MS,Polotsky VY

更新日期：2009-02-01 00:00:00

abstract：:Adenosine 5'-triphosphate (ATP) is a cotransmitter with classical transmitters in most nerves in the peripheral and central nervous systems, although the proportions vary between tissues and species and in different developmental and pathophysiological circumstances. There was early evidence that ATP was released toge...

journal_title：Experimental physiology

authors： Burnstock G

更新日期：2009-01-01 00:00:00

abstract：:To probe the mechanisms by which respiratory syncytial virus (RSV) infection in early life forms an important risk factor for the development of chronic asthma, an airway hyper-responsiveness (AHR) animal model of guinea-pigs with persistent RSV infection was established by intranasal instillation of 2 x 10(5) plaque-...

journal_title：Experimental physiology

authors： Tan Y,Yang T,Liu S,Liu H,Xiang Y,Qu F,Li H,Qin X

更新日期：2008-12-01 00:00:00

abstract：:Contraction-mediated injury is a major contributing factor to the pathophysiology of muscular dystrophy and therefore therapies that can attenuate this type of injury have clinical relevance. Systemic administration of insulin-like growth factor-I (IGF-I) has been shown to improve muscle function in dystrophic mdx mic...

journal_title：Experimental physiology

authors： Gehrig SM,Ryall JG,Schertzer JD,Lynch GS

更新日期：2008-11-01 00:00:00

abstract：:It is unclear whether measurement of limb or conduit artery blood flow during recovery from exercise provides an accurate representation of flow to the muscle capillaries where gas exchange occurs. To investigate this, we: (a) examined the kinetic responses of femoral artery blood flow (QFA), estimated muscle capillar...

journal_title：Experimental physiology

authors： Harper AJ,Ferreira LF,Lutjemeier BJ,Townsend DK,Barstow TJ

更新日期：2008-10-01 00:00:00

abstract：:We present a curve-fitting approach that permits quantitative comparisons of fatigue profiles obtained with different stimulation protocols in isolated slow-twitch soleus and fast-twitch extensor digitorum longus (EDL) muscles of mice. Profiles from our usual stimulation protocol (125 Hz for 500 ms, evoked once every ...

journal_title：Experimental physiology

authors： Cairns SP,Robinson DM,Loiselle DS

更新日期：2008-07-01 00:00:00

abstract：:Recently, we reported the presence of a local renal aldosterone production. In the present study, we tested the hypothesis that local aldosterone production in the kidney contributes to renal inflammation, matrix formation and albuminuria associated with diabetes. We evaluated changes in renal aldosterone content (RAC...

journal_title：Experimental physiology

authors： Siragy HM,Xue C

更新日期：2008-07-01 00:00:00

abstract：:Although numerous studies have recently implicated the calcineurin-nuclear factor of activated T-cells (Cn-NFAT) signalling pathway in the regulation of activity-dependent fibre type switching in adult mammalian skeletal muscles, little is known about the endogenous expression of NFAT proteins in the various fibre typ...

journal_title：Experimental physiology

authors： Mutungi G

更新日期：2008-03-01 00:00:00

abstract：:The hallmark of epithelial cells is their functional polarization. It is those membrane proteins that are distributed differentially, either to the apical or to the basal surface, that determine epithelial physiology. Such proteins will include 'pumps', 'channels' and 'carriers', and it is the functional interplay bet...

journal_title：Experimental physiology

authors： Boyd CA

更新日期：2008-03-01 00:00:00

abstract：:The pattern of propagation of slow waves in the small intestine is not clear. Specifically, it is not known whether propagation is determined by a single dominant ICC-MP (Interstitial cells of Cajal located in the Myenteric Plexus) pacemaker unit or whether there are multiple active pacemakers. To determine this patte...

journal_title：Experimental physiology

authors： Lammers WJ,Stephen B

更新日期：2008-03-01 00:00:00

abstract：:Sodium appetite, the behavioural drive to ingest salt, is stimulated by prolonged physiological sodium deficiency in many animal species. The same neural mechanisms that are responsible for sodium appetite in laboratory animals may influence human behaviour as well, with particular relevance to the dietary salt intake...

journal_title：Experimental physiology

authors： Geerling JC,Loewy AD

更新日期：2008-02-01 00:00:00

abstract：:Effects of altered maternal salt intake between 122 and 127 days gestation (term is 150 days) were studied in eight fetuses carried by ewes which had renal insufficiency caused by subtotal nephrectomy (STNxF) and seven fetuses carried by intact ewes (IntF). Plasma sodium and osmolality were increased in ewes with subt...

journal_title：Experimental physiology

authors： Boyce AC,Gibson KJ,Thomson CL,Lumbers ER

更新日期：2008-02-01 00:00:00

abstract：:Aldosterone influences the kidney's regulation of blood pressure (BP), but aldosterone can contribute to the pathogenesis of hypertension. Blood pressure is reduced with aerobic exercise training (AEX), but the extent to which plasma aldosterone (PA) levels change is unclear. The purpose of this study was to determine...

journal_title：Experimental physiology

authors： Jones JM,Dowling TC,Park JJ,Phares DA,Park JY,Obisesan TO,Brown MD

更新日期：2007-09-01 00:00:00

abstract：UNLABELLED:The modulation of activity of the upper airway dilator and respiratory muscles plays a key role in the regulation of ventilation, but little is known about the link between their neuromuscular activation processes in vivo. This study investigated genioglossus and diaphragm responses to transcranial magnetic ...

journal_title：Experimental physiology

authors： Wang W,Similowski T,Sériès F

更新日期：2007-07-01 00:00:00

abstract：:Non-invasive autonomic evaluation has used fast Fourier transform (FFT) to assign a range of low (LF) and high frequencies (HF) as markers of sympathetic and parasympathetic influences, respectively. However, FFT cannot be applied to brief transient phenomena, such as those observed on performing autonomic tests where...

journal_title：Experimental physiology

authors： Ducla-Soares JL,Santos-Bento M,Laranjo S,Andrade A,Ducla-Soares E,Boto JP,Silva-Carvalho L,Rocha I

更新日期：2007-07-01 00:00:00

abstract：:The nucleus tractus solitarii (NTS) is a key central link in control of multiple homeostatic reflexes. A number of studies have demonstrated that exogenous and endogenous nitric oxide (NO) within NTS regulates visceral function, but further understanding of the role of NO in the NTS is hampered by the lack of informat...

journal_title：Experimental physiology

authors： Wang S,Paton JF,Kasparov S

更新日期：2007-03-01 00:00:00

abstract：:This study examined whether left ventricular function was reduced during 3 h of semi-recumbent ergometer cycling at 70% of maximal oxygen uptake while preload to the heart was maintained via saline infusion. Indices of left ventricular systolic function (end-systolic blood pressure-volume relationship, SBP/ESV) and di...

journal_title：Experimental physiology

authors： Dawson EA,Shave R,Whyte G,Ball D,Selmer C,Jans Ø,Secher NH,George KP

更新日期：2007-03-01 00:00:00

abstract：:It is unknown whether changes in corticomotor excitability follow prolonged exercise in healthy humans. Furthermore, the role of supraspinal fatigue in decrements of force production and voluntary activation following prolonged exercise has not been established. This study investigated peripheral and central fatigue a...

journal_title：Experimental physiology

authors： Ross EZ,Middleton N,Shave R,George K,Nowicky A

更新日期：2007-03-01 00:00:00

abstract：:It is unclear whether cardiac hypertrophy and hypertrophy-related pathways will be induced by long-term intermittent hypoxia. Thirty-six Sprague-Dawley rats were randomly assigned into three groups: normoxia, and long-term intermittent hypoxia (12% O(2), 8 h per day) for 4 weeks (4WLTIH) or for 8 weeks (8WLTIH). Myoca...

journal_title：Experimental physiology

authors： Chen LM,Kuo WW,Yang JJ,Wang SG,Yeh YL,Tsai FJ,Ho YJ,Chang MH,Huang CY,Lee SD

更新日期：2007-03-01 00:00:00