Changes in tension of slow motor units in rat medial gastrocnemius during constant-rate stimulation at different frequencies.

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：:The present study was designed to investigate the renal responses to hypotensive haemorrhage early in life and the role of renal sympathetic nerves in modulating these renal responses. To this end, experiments were carried out in conscious, chronically instrumented lambs with either intact renal nerves (n = 7, Intact)...

journal_title：Experimental physiology

authors： Smith FG

更新日期：2002-09-01 00:00:00

abstract：:Gastric distension in anaesthetized pigs reflexly elicits peripheral vasoconstriction and an increase in plasma renin activity (PRA), with vagal afferent and sympathetic efferent limbs. The aim of the present study was to quantify the contribution of the renin-angiotensin system to the peripheral vasoconstriction. In ...

journal_title：Experimental physiology

authors： Molinari C,Battaglia A,Grossini E,Florio S,Mary DA,Vassanelli C,Vacca G

更新日期：2003-05-01 00:00:00

abstract：:Ageing is associated with skeletal muscle impairment. Changes in mitochondrial homeostasis are thought to play a key role in this process. This study examined whether chronic intake of polyphenols (PPs), which are known to be modulators of oxidative stress, might prevent the age-related decline of mitochondrial functi...

journal_title：Experimental physiology

authors： Charles AL,Meyer A,Dal-Ros S,Auger C,Keller N,Ramamoorthy TG,Zoll J,Metzger D,Schini-Kerth V,Geny B

更新日期：2013-02-01 00:00:00

abstract：NEW FINDINGS:What is the topic of this review? This article describes the contribution of oxidative stress and pro-inflammatory cytokines to the enhanced carotid body chemosensory responsiveness to the hypoxia and systemic hypertension induced by chronic intermittent hypoxia. What advances does it highlight? Chronic in...

journal_title：Experimental physiology

authors： Iturriaga R,Moya EA,Del Rio R

更新日期：2015-02-01 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：:Branched fibres are a well-documented phenomenon of regenerating skeletal muscle. They are found in the muscles of boys with Duchenne muscular dystrophy (DMD), a severe condition of progressive muscle wasting caused by an absence of the sarcolemmal protein dystrophin, and in the muscles of the mdx mouse, an animal mod...

journal_title：Experimental physiology

authors： Chan S,Head SI

更新日期：2011-06-01 00:00:00

abstract：:It has been shown previously that the amplitudes of the harmonic components of the pulse spectrum vary in specific patterns when the arteries leading to different organs are ligated, with the variations in the harmonics being linearly additive. Since ligation can be regarded as a vast increase in organ resistance, the...

journal_title：Experimental physiology

authors： Hsu TL,Chao PT,Hsiu H,Wang WK,Li SP,Wang YY

更新日期：2006-01-01 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：: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：NEW FINDINGS:What is the central question of this study? Quantitative values of shear rate-specific blood viscosity and shear stress in the human macrovasculature in response to exercise hyperaemia are unknown. What is the main finding and its importance? Using the handgrip exercise model, we showed that an increase in...

journal_title：Experimental physiology

authors： Leo JA,Simmonds MJ,Sabapathy S

更新日期：2020-02-01 00:00:00

abstract：NEW FINDINGS:What is the central question of this study? Hypoxic pulmonary vasoconstriction has never been characterized in isolated mouse pulmonary arteries of different generations in detail. What is the main finding and its importance? We found that only small intrapulmonary arteries (80-200 μm in diameter) exhibit ...

journal_title：Experimental physiology

authors： Strielkov I,Krause NC,Sommer N,Schermuly RT,Ghofrani HA,Grimminger F,Gudermann T,Dietrich A,Weissmann N

更新日期：2018-09-01 00:00:00

abstract：:A considerable body of evidence indicates that the intracellular chloride concentration ([Cl-]i) is an important regulatory signal in epithelial ion transport. [Cl-]i regulates the open channel probability of sodium and chloride channels, the rate of chloride channel recycling to the apical membrane, cell volume homeo...

journal_title：Experimental physiology

authors： Treharne KJ,Crawford RM,Mehta A

更新日期：2006-01-01 00:00:00

abstract：:To better understand the mechanisms underlying the pulmonary O(2) uptake (V(O(2P))) slow component during high-intensity exercise, we used (31)P magnetic resonance spectroscopy, gas exchange, surface electromyography and near-infrared spectroscopy measurements to examine the potential relationship between the slow com...

journal_title：Experimental physiology

authors： Layec G,Bringard A,Yashiro K,Le Fur Y,Vilmen C,Micallef JP,Perrey S,Cozzone PJ,Bendahan D

更新日期：2012-08-01 00:00:00

abstract：:The aim of the present work was to investigate the role of the serotoninergic system in the control of sodium appetite of hypothyroid rats (HTR) by administering drugs that affect the serotoninergic activity, and to compare the same homeostatic behaviour in euthyroid rats (ETR) also given these drugs. Fenfluramine (FE...

journal_title：Experimental physiology

authors： Badauê-Passos D Jr,Ventura RR,Silva LF,Olivares EL,Reis LC

更新日期：2003-03-01 00:00:00

abstract：:Methyl CpG binding protein-2 (MECP2) is a chromatin-remodelling factor with a dual role in gene expression. Evidence from patients carrying MECP2 mutations and from transgenic mouse models demonstrates that this protein is involved in the control of body weight. However, the mechanism for this has not been fully eluci...

journal_title：Experimental physiology

authors： Torres-Andrade R,Moldenhauer R,Gutierrez-Bertín N,Soto-Covasich J,Mancilla-Medina C,Ehrenfeld C,Kerr B

更新日期：2014-09-01 00:00:00

abstract：:Simultaneous portal blood absorption and intestinal mucosal catabolism of labelled fatty acids were investigated. Anaesthetized adult Wistar rats were infused intraduodenally either with 90 mumol of capric (C10:0), oleic (C18:1), linoleic (C18:2) or arachidonic (C20:4) 1-14C acids or with 30 mumol of each labelled fat...

journal_title：Experimental physiology

authors： Bernard A,Carlier H

更新日期：1991-05-01 00:00:00

abstract：:Duchenne muscular dystrophy is a devastating muscular dystrophy of childhood. Mutations in the dystrophin gene destroy the link between the internal muscle filaments and the extracellular matrix, resulting in severe muscle weakness and progressive muscle wasting. There is currently no cure and, whilst palliative treat...

journal_title：Experimental physiology

authors： Fairclough RJ,Bareja A,Davies KE

更新日期：2011-11-01 00:00:00

abstract：:Measurements of intracellular calcium (Ca2+i) and sodium (Na+i) have been made in single smooth muscle cells in confluent cultures of the A7r5 cell line using the Ca(2+)- and Na(+)-sensitive dyes Fura-2 and sodium-binding benzofuran isophthalate (SBFI). Reversal of the Na+ gradient in control cells results in a small ...

journal_title：Experimental physiology

authors： Gillespie JI,Otun H,Greenwell JR,Dunlop W

更新日期：1992-07-01 00:00:00

abstract：:Three experiments were performed to see whether cardiac neurons contribute to the intrinsic control of heart rate in right atria of adult rats. The intrinsic heart rate response (IRR) was examined by raising right atrial pressure from 2 to 8 mmHg for 3 min. In isolated preparations of the right atrium, the IRR was not...

journal_title：Experimental physiology

authors： Wilson SJ,Bolter CP

更新日期：2002-11-01 00:00:00

abstract：:In quiescent papillary muscles isolated from hearts of rats with streptozotocin-induced diabetes resting intracellular sodium activity (aiNa) was about 56% greater than in muscles from controls. An intracellular acid load induced by the NH4+ method caused a rise in aiNa whose maximum amplitude was similar in both grou...

journal_title：Experimental physiology

authors： Lagadic-Gossmann D,Feuvray D

更新日期：1991-01-01 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：:Single cells from the rabbit pulmonary artery were isolated using a new and convenient procedure. Strips of muscle were incubated overnight in papain at 6 degrees C and dispersed the following morning after warming the tissue for 10 min. This method consistently produced a high yield of relaxed cells, which reversibly...

journal_title：Experimental physiology

authors： Clapp LH,Gurney AM

更新日期：1991-09-01 00:00:00

abstract：:The vascular actions of insulin are complex, because it can stimulate both nitric oxide-mediated dilatation and endothelin (ET)-1-mediated constriction. We examined vasoreactivity to insulin in isolated feed arteries of the gastrocnemius (GFA) and soleus muscles (SFA) of 32-week-old Long-Evans Tokushima Otsuka (LETO) ...

journal_title：Experimental physiology

authors： Jenkins NT,Padilla J,Martin JS,Crissey JM,Thyfault JP,Rector RS,Laughlin MH

更新日期：2014-01-01 00:00:00

abstract：NEW FINDINGS:What is the central question of this study? Our previous study demonstrates that elevated orexin 2 receptor (OX2R) activity within the rostral ventrolateral medulla (RVLM) contributes to hypertension in spontaneously hypertensive rats (SHRs), and a lower OX2R protein level was detected in their RVLM. The p...

journal_title：Experimental physiology

authors： Lee YH,Tsai MC,Li TL,Dai YW,Huang SC,Hwang LL

更新日期：2015-09-01 00:00:00

abstract：NEW FINDINGS:What is the central question of this study? We modelled the alveolar pathway during breath holding on the hypothesis that it follows a hypoventilation loop on the O2 -CO2 diagram. What is the main finding and its importance? Validation of the model was possible within the range of alveolar gas compositions...

journal_title：Experimental physiology

authors： Taboni A,Fagoni N,Fontolliet T,Grasso GS,Moia C,Vinetti G,Ferretti G

更新日期：2020-09-29 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：NEW FINDINGS:What is the central question of this study? Could different hormonally active substances, including oestrogen receptor (ER) agonists, protect against oxidative brain damage and memory impairment induced by a single epileptic seizure in rats? If so, which signalling mechanisms are involved in their anti-inf...

journal_title：Experimental physiology

authors： Koyuncuoğlu T,Arabacı Tamer S,Erzik C,Karagöz A,Akakın D,Yüksel M,Yeğen BÇ

更新日期：2019-12-01 00:00:00

abstract：:Rats were fed a liquid diet with the aim of decreasing nervous reflex activity in the parotid glands. In rats killed after 21 days on this diet the glands were atrophied and the total amounts of the neuropeptides, substance P, vasoactive intestinal peptide and calcitonin gene-related peptide, were lower than in contro...

journal_title：Experimental physiology

authors： Månsson B,Ekman R,Håkanson R,Ekström J

更新日期：1990-07-01 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