Renal sympathetic nerves do not modulate renal responses to haemorrhage in conscious lambs.

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) or bilateral renal denervation performed at the time of surgery (n = 5, Denervated). Parameters of renal function were measured before and after 20% haemorrhage (experiment 1) and 0% haemorrhage (experiment 2), the latter serving as a time control. The two experiments were performed in random order at intervals of 24-48 h. Within 20 min of hypotensive haemorrhage in intact lambs, glomerular filtration rate decreased by approximately 60%; this response was not altered by renal denervation. Since renal plasma flow remained constant after haemorrhage, the filtration fraction also decreased. After 20% haemorrhage, urinary flow rate decreased in intact lambs; this response was also not altered by renal denervation. Excretion rates of Na+ and K+ as well as urinary osmolality and free water clearance were not altered by haemorrhage in either intact or denervated lambs. These data provide the first description of renal responses to haemorrhage early in life. In addition, the present findings provide new information that renal responses to haemorrhage early in life do not appear to be modulated by renal sympathetic nerves.

journal_name

Exp Physiol

journal_title

Experimental physiology

authors

Smith FG

doi

10.1113/eph8702434

subject

Has Abstract

pub_date

2002-09-01 00:00:00

pages

557-62

issue

5

eissn

0958-0670

issn

1469-445X

journal_volume

87

pub_type

杂志文章
  • Interactions between nitric oxide and superoxide on the neural regulation of proximal fluid reabsorption in hypertensive rats.

    abstract::This study investigated the role of nitric oxide (NO) and superoxide anions in modulating the renal nerve-dependent increases in proximal tubular fluid reabsorption (Jva). Renal nerve stimulation at 0.75 and 1.0 Hz (15 V, 0.2 ms) in anaesthetized Wistar rats had no effect on glomerular filtration rate but decreased ur...

    journal_title:Experimental physiology

    pub_type: 杂志文章

    doi:10.1113/expphysiol.2003.002640

    authors: Wu XC,Johns EJ

    更新日期:2004-05-01 00:00:00

  • The effect of [Na+]i and [Na+]o on Ca2+ mobilization in the rat aortic smooth muscle cell line A7r5.

    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

    pub_type: 杂志文章

    doi:10.1113/expphysiol.1992.sp003625

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

    更新日期:1992-07-01 00:00:00

  • Increased central and peripheral inflammation and inflammatory hyperalgesia in Zucker rat model of leptin receptor deficiency and genetic obesity.

    abstract::This study investigated whether sensitivity to nociceptive stimuli is altered in obese rats using established models of inflammatory pain, and using real-time PCR, profiled alterations in expression of key adipokine and inflammatory mediator mRNA (adiponectin, tumor necrosis factor-α, interleukin-1β, cyclooxygenase-2,...

    journal_title:Experimental physiology

    pub_type: 杂志文章

    doi:10.1113/expphysiol.2011.064220

    authors: Iannitti T,Graham A,Dolan S

    更新日期:2012-11-01 00:00:00

  • Targeted ablation of cardiac sympathetic neurons attenuates adverse postinfarction remodelling and left ventricular dysfunction.

    abstract:NEW FINDINGS:What is the central question of this study? Can targeted ablation of cardiac sympathetic neurons suppress myocardial infarction-induced adverse cardiac remodelling and left ventricular dysfunction? What is the main finding and its importance? Targeted ablation of cardiac sympathetic neurons significantly a...

    journal_title:Experimental physiology

    pub_type: 杂志文章

    doi:10.1113/EP086928

    authors: Xiong L,Liu Y,Zhou M,Wang G,Quan D,Shuai W,Shen C,Kong B,Huang C,Huang H

    更新日期:2018-09-01 00:00:00

  • Rapid onset pressor response to exercise in young women with a family history of hypertension.

    abstract:NEW FINDINGS:What is the central question of this study? Alterations in blood pressure control at exercise onset are apparent in older adults with established cardiovascular disease. It is currently not known whether these alterations are evident in young adults with a family history of hypertension. What is the main f...

    journal_title:Experimental physiology

    pub_type: 杂志文章

    doi:10.1113/EP086466

    authors: Matthews EL,Greaney JL,Wenner MM

    更新日期:2017-09-01 00:00:00

  • The effect of H-wave therapy upon conduction in the human superficial radial nerve in vivo.

    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

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1113/expphysiol.1996.sp003979

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

    更新日期:1996-09-01 00:00:00

  • Insulin-like growth factor-I analogue protects muscles of dystrophic mdx mice from contraction-mediated damage.

    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

    pub_type: 杂志文章

    doi:10.1113/expphysiol.2008.042838

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

    更新日期:2008-11-01 00:00:00

  • Human amniotic membrane mesenchymal stem cell-conditioned medium reduces inflammatory factors and fibrosis in ovalbumin-induced asthma in mice.

    abstract:NEW FINDINGS:What is the central question of this study? Is mesenchymal stem cell-conditioned medium capable of improving the pathological alterations of ovalbumin-induced asthma in mice? What is the main finding and its importance? Our study indicated that human amniotic membrane mesenchymal stem cell-conditioned medi...

    journal_title:Experimental physiology

    pub_type: 杂志文章

    doi:10.1113/EP088911

    authors: Dalouchi F,Falak R,Bakhshesh M,Sharifiaghdam Z,Azizi Y,Aboutaleb N

    更新日期:2020-12-01 00:00:00

  • Reduced hypoxic ventilatory response in newborn mice knocked-out for the progesterone receptor.

    abstract::Recent studies showed that progesterone stimulates the hypoxic ventilatory response and may reduce apnoea frequency in newborn rats, but so far we still do not know by what mechanisms and whether endogenous progesterone might contribute to respiratory control in neonates. We therefore determined the role of the nuclea...

    journal_title:Experimental physiology

    pub_type: 杂志文章

    doi:10.1113/expphysiol.2014.080986

    authors: Potvin C,Rossignol O,Uppari N,Dallongeville A,Bairam A,Joseph V

    更新日期:2014-11-01 00:00:00

  • Regulation of the skeletal muscle blood flow in humans.

    abstract::In humans, skeletal muscle blood flow is regulated by an interaction between several locally formed vasodilators, including NO and prostaglandins. In plasma, ATP is a potent vasodilator that stimulates the formation of NO and prostaglandins and, very importantly, can offset local sympathetic vasoconstriction. Adenosin...

    journal_title:Experimental physiology

    pub_type: 杂志文章,评审

    doi:10.1113/expphysiol.2014.081620

    authors: Mortensen SP,Saltin B

    更新日期:2014-12-01 00:00:00

  • Dopamine D1 receptors control exercise hyperpnoea in mice.

    abstract::Previously, we undertook simultaneous recording of ventilation and pulmonary gas exchange in mice and revealed that dopamine D(2) receptors participate in exercise hyperpnoea via behavioural control of ventilation with unchanged pulmonary gas exchange. Here, we examined the hypothesis that D(1) receptors also contribu...

    journal_title:Experimental physiology

    pub_type: 杂志文章

    doi:10.1113/expphysiol.2012.068312

    authors: Iwase M,Izumizaki M,Tsuchiya N,Homma I

    更新日期:2013-02-01 00:00:00

  • Inflammation and oxidative stress during intermittent hypoxia: the impact on chemoreception.

    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

    pub_type: 杂志文章,评审

    doi:10.1113/expphysiol.2014.079525

    authors: Iturriaga R,Moya EA,Del Rio R

    更新日期:2015-02-01 00:00:00

  • An olfactory-parotid salivary reflex in humans?

    abstract::It is commonly stated that smell elicits a parotid salivary reflex in humans. However, this assumption seems to be supported only by experiments in which either a lemon or an irritating odour has been used as the primary stimulus. In this study six pleasant odours, chocolate, vanilla, peppermint, beef, tomato and lemo...

    journal_title:Experimental physiology

    pub_type: 杂志文章

    doi:10.1113/expphysiol.1991.sp003502

    authors: Lee VM,Linden RW

    更新日期:1991-05-01 00:00:00

  • Mitoprotection preserves the renal vasculature in porcine metabolic syndrome.

    abstract:NEW FINDINGS:What is the central question of this study? We hypothesized that chronic mitoprotection would decrease renal vascular remodelling and dysfunction in swine metabolic syndrome. What is the main finding and its importance? This study shows that experimental metabolic syndrome exerts renal microvascular and en...

    journal_title:Experimental physiology

    pub_type: 杂志文章

    doi:10.1113/EP086988

    authors: Eirin A,Hedayat AF,Ferguson CM,Textor SC,Lerman A,Lerman LO

    更新日期:2018-07-01 00:00:00

  • Postprandial adjustments in renal phosphate excretion do not involve a gut-derived phosphaturic factor.

    abstract:NEW FINDINGS:What is the central question of this study? Does a previously hypothesized signalling mechanism, believed to detect postprandial increases in intestinal phosphate and that can stimulate the kidneys to rapidly excrete phosphate, operate under physiological conditions? What is the main finding and its import...

    journal_title:Experimental physiology

    pub_type: 杂志文章

    doi:10.1113/EP086062

    authors: Lee GJ,Mossa-Al Hashimi L,Debnam ES,Unwin RJ,Marks J

    更新日期:2017-04-01 00:00:00

  • Involvement of calmodulin in glucagon-like peptide 1(7-36) amide-induced inhibition of the ATP-sensitive K+ channel in mouse pancreatic beta-cells.

    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

    pub_type: 杂志文章

    doi:10.1113/eph8602173

    authors: Ding WG,Kitasato H,Matsuura H

    更新日期:2001-05-01 00:00:00

  • Ventricular contraction and relaxation rates during muscle metaboreflex activation in heart failure: are they coupled?

    abstract:NEW FINDINGS:What is the central question of this study? Does the muscle metaboreflex affect the ratio of left ventricular contraction/relaxation rates and does heart failure impact this relationship. What is the main finding and its importance? The effect of muscle metaboreflex activation on the ventricular relaxation...

    journal_title:Experimental physiology

    pub_type: 杂志文章

    doi:10.1113/EP089053

    authors: Mannozzi J,Massoud L,Kaur J,Coutsos M,O'Leary DS

    更新日期:2020-11-23 00:00:00

  • Appearance of the capillary endothelial glycocalyx in chronically stimulated rat skeletal muscles in relation to angiogenesis.

    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

    pub_type: 杂志文章

    doi:10.1113/expphysiol.1996.sp003989

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

    更新日期:1996-11-01 00:00:00

  • Differential responses to sympathetic stimulation in the cerebral and brachial circulations during rhythmic handgrip exercise in humans.

    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

    pub_type: 杂志文章

    doi:10.1113/expphysiol.2010.054387

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

    更新日期:2010-11-01 00:00:00

  • The role of gut endocrine cells in control of metabolism and appetite.

    abstract::After food is ingested, nutrients pass through the gastrointestinal tract, stimulating the release of a range of peptide hormones. Among their many local, central and peripheral actions, these hormones act to mediate glucose metabolism and satiety. Indeed, it is the modification of gut hormone secretion that is consid...

    journal_title:Experimental physiology

    pub_type: 杂志文章,评审

    doi:10.1113/expphysiol.2014.079764

    authors: Parker HE,Gribble FM,Reimann F

    更新日期:2014-09-01 00:00:00

  • Exercise intolerance in heart failure: The important role of pulmonary hypertension.

    abstract:NEW FINDINGS:What is the topic of this review? This review concerns the negative impact of pulmonary hypertension (PH) on the pulmonary haemodynamic and gas exchange responses to exercise, considering the mechanisms by which PH plays a role in exercise intolerance in heart failure (HF) patients. What advances does it h...

    journal_title:Experimental physiology

    pub_type: 杂志文章

    doi:10.1113/EP088105

    authors: Taylor BJ,Shapiro BP,Johnson BD

    更新日期:2020-02-24 00:00:00

  • Human femoral artery and estimated muscle capillary blood flow kinetics following the onset of exercise.

    abstract::The purpose of this study was to compare the kinetics of estimated capillary blood flow (Qcap) to those of femoral artery blood flow (QFA) and estimated muscle oxygen uptake (VO2m). Nine healthy subjects performed a series of transitions from rest to moderate (below estimated lactate threshold, 6 min bouts) knee exten...

    journal_title:Experimental physiology

    pub_type: 临床试验,杂志文章

    doi:10.1113/expphysiol.2005.032904

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

    更新日期:2006-07-01 00:00:00

  • Age-related electrophysiological changes in mouse taste receptor cells.

    abstract:NEW FINDINGS:What is the central question of this study? Loss of taste or inability to distinguish between different tastes progresses with age. The purpose was to evaluate the age-dependent changes in taste by studying the electrophysiological properties of taste receptor cells. What is the main finding and its import...

    journal_title:Experimental physiology

    pub_type: 杂志文章

    doi:10.1113/EP089104

    authors: Takeuchi K,Yoshii K,Ohtubo Y

    更新日期:2020-11-10 00:00:00

  • Sexual dimorphism of liver endoplasmic reticulum stress susceptibility in prepubertal rats and the effect of sex steroid supplementation.

    abstract:NEW FINDINGS:What is the central question of this study? Is there sexual dimorphism in the occurrence of hepatic endoplasmic reticulum stress? What is the main finding and its importance? The transition from prepubertal to the adult age is associated with an increase in the unfolded protein response markers in the live...

    journal_title:Experimental physiology

    pub_type: 杂志文章

    doi:10.1113/EP087518

    authors: Rossetti CL,de Oliveira Costa HM,Barthem CS,da Silva MH,de Carvalho DP,da-Silva WS

    更新日期:2019-05-01 00:00:00

  • Creatine supplementation improves performance above critical power but does not influence the magnitude of neuromuscular fatigue at task failure.

    abstract:NEW FINDINGS:What is the central question of this study? Does the magnitude of neuromuscular fatigue depend on the amount of work done (W') at task failure when cycling above critical power (CP)? What is the main finding and its importance? Creatine supplementation increases W' and enhances supra-CP performance, but in...

    journal_title:Experimental physiology

    pub_type: 杂志文章,随机对照试验

    doi:10.1113/EP087886

    authors: Schäfer LU,Hayes M,Dekerle J

    更新日期:2019-12-01 00:00:00

  • A pilot study to investigate the associations of urinary concentrations of NO, ATP and derivatives with overactive bladder symptom severity.

    abstract:NEW FINDINGS:What is the central question of this study? Are the urinary concentrations of NO and ATP, and their metabolites, associated with the severity of symptoms of overactive bladder? What is the main finding and its importance? The urinary ratios of [ATP/NO], [ADP/NO] and a combination of these, [ATP/Cr*ADP/Cr]/...

    journal_title:Experimental physiology

    pub_type: 杂志文章

    doi:10.1113/EP088450

    authors: Firouzmand S,Young JS

    更新日期:2020-06-01 00:00:00

  • Mineralocorticoid receptors, inflammation and sympathetic drive in a rat model of systolic heart failure.

    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

    pub_type: 杂志文章,评审

    doi:10.1113/expphysiol.2008.045948

    authors: Felder RB

    更新日期:2010-01-01 00:00:00

  • Metabolic and clonogenic consequences of ischaemia reperfusion insult in solid tumours.

    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

    pub_type: 杂志文章,评审

    doi:10.1113/expphysiol.1997.sp004031

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

    更新日期:1997-03-01 00:00:00

  • Alphaviral cytotoxicity and its implication in vector development.

    abstract::A great variety of viruses have been engineered to serve as expression vectors. Among them, the alphaviruses Semliki Forest virus and Sindbis virus represent promising tools for heterologous gene expression in a wide variety of host cells. Several applications have already been described in neurobiological studies, in...

    journal_title:Experimental physiology

    pub_type: 杂志文章,评审

    doi:10.1113/expphysiol.2004.028142

    authors: Rhême C,Ehrengruber MU,Grandgirard D

    更新日期:2005-01-01 00:00:00

  • Characteristics of augmented breaths provoked by almitrine bismesylate in cats.

    abstract::The contribution of almitrine bismesylate to the occurrence and pattern of augmented breaths was studied in fifteen spontaneously breathing, anaesthetized cats. Breathing was via a tracheostomy, while the laryngeal resistance to airflow was measured with the larynx isolated in situ. Almitrine bismesylate at a dose of ...

    journal_title:Experimental physiology

    pub_type: 杂志文章

    doi:10.1113/expphysiol.1992.sp003565

    authors: Szereda-Przestaszewska M,Jakus J,Stránsky A,Baráni H

    更新日期:1992-01-01 00:00:00