Attenuation of liver ischemia-reperfusion-induced atrial dysfunction by external pacing but not by isoproterenol.

Abstract:

:Remote ischemia-reperfusion detrimentally affects myocardial function by initially interfering with the rate of contraction. We investigated the usefulness of isoproterenol versus external electrical pacing in attenuating secondary functional damage of isolated Wistar rat atria. Atrial strips (n = 10/group) were bathed within oxygenated Krebs-Henseleit solution that exited from isolated livers that had been either perfused normally (controls) or underwent no flow (ischemia) for 2 h. In addition to one noninterventional ischemia-exposed strip group, a second group was externally paced at a fixed rate (55 pulses.min-1, 6 V) and a third "ischemia" group was treated with isoproterenol (0.1 mM), both interventions commencing upon the strips' exposure to the hepatic effluents. Control strips displayed unaltered contraction rate and systolic-generated tension during the 2-h exposure. Nontreated strips exposed to ischemic reperfusate experienced bradycardia compared with baseline values (7 +/- 2 vs. 50 +/- 12 beats.min-1, p < 0.05), followed <1-min later by a fall in the generated tension (11 +/- 4 vs. 20 +/- 6 mmHg, p < 0.05). The paced-ischemic strips displayed unaltered rate and force of contraction, whereas the addition of isoproterenol did not prevent deterioration in the rate and force of contraction (8 +/- 3 beats.min-1, 12 +/- 4 mmHg, respectively; p < 0.05 vs. baseline control ischemia-paced strips). Thus, external electrical pacing prevented liver ischemia-reperfusion-induced atrial strips' bradycardia and loss of contractility, while isoproterenol did not.

authors

Ben-Abraham R,Shapira I,Szold A,Weinbroum AA

doi

10.1139/y03-125

subject

Has Abstract

pub_date

2004-01-01 00:00:00

pages

9-15

issue

1

eissn

0008-4212

issn

1205-7541

pii

y03-125

journal_volume

82

pub_type

杂志文章
  • Differences in the altered energy metabolism of hemorrhagic shock and hypoxemia.

    abstract::The effect of hemorrhagic shock, hypoxemia, and anoxia on the levels of adenine and pyridine nucleotides of liver and kidney was assessed. ATP levels in liver and kidney of animals in shock or animals subjected to 7 min of anoxia decreased by 85 and 73%, respectively. Under hypoxic conditions (arterial PO2 AT 18 MMHg)...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y76-104

    authors: Chaudry IH,Sayeed MM,Baue AE

    更新日期:1976-10-01 00:00:00

  • Susceptibility of spontaneously hypertensive rats to the diabetogenic effects of streptozotocin.

    abstract::Several studies have utilized the spontaneously hypertensive (SHR) diabetic rat to document the synergistic deleterious consequences of diabetes and hypertension on various organ systems. However, whether these effects are due entirely to the overlapping pathological states or partially result from a greater susceptib...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:

    authors: Jian K,Fok E,Cam MC,Sambandam N,Yao J,Rodrigues B

    更新日期:1996-11-01 00:00:00

  • Effects of prostaglandins and luteinizing hormone-releasing hormone on phosphatidic acid-phosphatidylinositol labeling in rat granulosa cells.

    abstract::In cultures of rat granulosa cells, luteinizing hormone-releasing hormone (LHRH) increases 32P incorporation into both phosphatidylinositol (PI) and phosphatidic acid (PA). After 20 min, the level of radioactivity was three- to four-fold (p less than 0.01) above control in the PI and PA fractions, respectively. The st...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y85-058

    authors: Minegishi T,Leung PC

    更新日期:1985-04-01 00:00:00

  • Calcium signaling in the nucleus.

    abstract::Cytosolic Ca(2+) is a versatile secondary messenger that regulates a wide range of cellular activities. In the past decade, evidence has accumulated that free Ca(2+) within the nucleus also plays an important messenger function. Here we review the mechanisms and effects of Ca(2+) signals within the nucleus. In particu...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章,评审

    doi:10.1139/y05-117

    authors: Gomes DA,Leite MF,Bennett AM,Nathanson MH

    更新日期:2006-03-01 00:00:00

  • D-Serine inhibits AMPA receptor-mediated current in rat hippocampal neurons.

    abstract::D-Serine, a recently identified gliotransmitter, serves as an endogenous coagonist binding to the glycine site of N-methyl-D-aspartate (NMDA) receptors. However, it is not clear whether this native ligand is able to bind to and modulate alpha-amino-3-hydroxyl-5-methyl-4-isoxazolepropionate (AMPA) receptors. In the pre...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y07-040

    authors: Gong XQ,Zabek RL,Bai D

    更新日期:2007-05-01 00:00:00

  • Tissue-specific concentration changes of estrone and estradiol during spontaneous and ACTH-induced parturition in sheep.

    abstract::Changes in estrogen production are considered important in the sequence of events leading to parturition. We sought tissue-specific changes in the concentration of unconjugated estrone (E1) and estradiol (E2) in intrauterine fetal (amnion, chorion) and maternal (endometrium, myometrium) tissues during normal pregnancy...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y87-026

    authors: Power SG,Challis JR

    更新日期:1987-02-01 00:00:00

  • Kinetics, distribution, and biotransformation of the chemical HI-6 in the rat, dog, and rhesus monkey.

    abstract::Disposition of the bis-pyridinium mono-oxime, HI-6, following intramuscular injection in rats (200 mg/kg bw), beagle dogs (10 and 50 mg/kg bw), and rhesus monkeys (50 mg/kg bw) revealed that the oxime was absorbed rapidly and completely from the site of injection, was distributed rapidly in the tissues, and that tissu...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y90-089

    authors: Ecobichon DJ,Comeau AM,O'Neil WM,Marshall WD

    更新日期:1990-05-01 00:00:00

  • Effects of alterations in maternal thyroid metabolism on embryonic thyroid development in the chick.

    abstract::The cause of embryonic thyroidal enlargement in the progeny of chickens fed goitrogenic rapeseed meal (RSM) has been investigated. It has been found that eggs from birds fed RSM are low in iodine. The low concentration of iodine in the eggs of the goitrous birds is apparently due to diversion of a large proportion of ...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y76-038

    authors: March BE,Leung P

    更新日期:1976-06-01 00:00:00

  • Effect of nickel chloride on streptozotocin-induced diabetes in rats.

    abstract::The potential of nickel chloride to prevent streptozotocin-induced hyperglycemia was tested in rats in vivo. To induce diabetes, streptozotocin (100 mg/kg body weight) was injected as a single dose. Streptozotocin treatment resulted in a significant decrease in plasma insulin and ceruloplasmin, and pancreatic Cu, prot...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y88-104

    authors: Novelli EL,Rodrigues NL,Ribas BO

    更新日期:1988-05-01 00:00:00

  • The effects of periarterial nerve activation on coronary vessel tone in an isolated and perfused slab of beef ventricle.

    abstract::The direct effects of extrinsic nerve stimulation on coronary artery tone are unclear because of the complications arising from alterations in myocardial dynamics which themselves alter flow. An isolated and perfused nonbeating slab of beef ventricle was utilized in the present experiments to eliminate secondary compl...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y79-043

    authors: Kalsner S

    更新日期:1979-03-01 00:00:00

  • Studies on transhepatic insulin absorption.

    abstract::The intraperitoneal administration of insulin has been recommended because it was found to effectively control the plasma glucose level. Several authors have suggested that intraperitoneal insulin administration may be more "physiological" and therefore preferable because the insulin is absorbed into the portal venous...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y86-036

    authors: Zingg W,Rappaport AM,Leibel BS

    更新日期:1986-03-01 00:00:00

  • Pulmonary gemcitabine delivery for treating lung cancer: pharmacokinetics and acute lung injury aspects in animals.

    abstract::Gemcitabine, a nucleoside analogue for treating lung cancer, is clinically administered as an intravenous infusion. To achieve better patient compliance and more direct effect on the lung, we explored a new gemcitabine pulmonary delivery route and evaluated the pharmacokinetics and acute lung injury aspects in animals...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y08-039

    authors: Min R,Li T,Du J,Zhang Y,Guo J,Lu WL

    更新日期:2008-05-01 00:00:00

  • Doxorubicin-induced late cardiotoxicity: delayed impairment of Ca2+-handling mechanisms in the sarcoplasmic reticulum in the rat.

    abstract::Doxorubicin treatment causes delayed development of cardiotoxicity. Whether the doxorubicin-induced impairment of cardiac functions reverses or progresses with time after the cessation of the treatment was examined. The rats were injected with doxorubicin (2.5 mg/kg, i.v., once a week for 3 weeks) and sacrificed at 1 ...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:

    authors: Chugun A,Temma K,Oyamada T,Suzuki N,Kamiya Y,Hara Y,Sasaki T,Kondo H,Akera T

    更新日期:2000-04-01 00:00:00

  • Chondroitin sulfate mediates liver responses to injury induced by dual endothelin receptor inhibition.

    abstract::Although dual endothelin receptor antagonists (ERAs) show great promise for treating various conditions, their propensity to induce liver injury limits their clinical usage. Inflammation and fibrosis are important processes in liver responses to injury and it has been suggested that they and dual ERA-induced liver inj...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/cjpp-2019-0649

    authors: Ryanto GRT,Yorifuji K,Ikeda K,Emoto N

    更新日期:2020-09-01 00:00:00

  • Pain regulation of endokinin A/B or endokinin C/D on chimeric peptide MCRT in mice.

    abstract::The present study focused on the interactive pain regulation of endokinin A/B (EKA/B, the common C-terminal decapeptide in EKA and EKB) or endokinin C/D (EKC/D, the common C-terminal duodecapeptide in EKC and EKD) on chimeric peptide MCRT (YPFPFRTic-NH2, based on YPFP-NH2 and PFRTic-NH2) at the supraspinal level in mi...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/cjpp-2015-0554

    authors: He C,Gong J,Yang L,Zhang H,Dong S,Zhou L

    更新日期:2016-09-01 00:00:00

  • Renal medullary plasma flow rate and reabsorption of salt and water from inner medullary collecting duct.

    abstract::It has been proposed that medullary washout secondary to increased blood flow will limit maximal urine osmolality and reabsorption of salt and water from the inner medullary collecting duct. We have tested this prediction. The function of the inner medullary collecting duct was examined by microcatheterization. Acetyl...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y87-383

    authors: Cupples WA,Sonnenberg H

    更新日期:1987-12-01 00:00:00

  • The role of the posterior parietal cortex in coordinate transformations for visual-motor integration.

    abstract::Lesion to the posterior parietal cortex in monkeys and humans produces spatial deficits in movement and perception. In recording experiments from area 7a, a cortical subdivision in the posterior parietal cortex in monkeys, we have found neurons whose responses are a function of both the retinal location of visual stim...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y88-078

    authors: Andersen RA,Zipser D

    更新日期:1988-04-01 00:00:00

  • Regulation of vascular smooth muscle tone.

    abstract::Vascular smooth muscle tone is regulated primarily by the sarcoplasmic free Ca2+ concentration, which determines the level of myosin phosphorylation. Stimulation of the muscle results in an increase in free [Ca2+], whereupon Ca2+ binds to calmodulin, inducing a conformational change enabling calmodulin to interact wit...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章,评审

    doi:10.1139/y94-130

    authors: Walsh MP

    更新日期:1994-08-01 00:00:00

  • Electrical field stimulation induces cardiac fibroblast proliferation through the calcineurin-NFAT pathway.

    abstract::Most cardiac diseases are associated with fibrosis. Calcineurin (CaN) is regulated by Ca(2+)/calmodulin (CaM). The CaN-NFAT (nuclear factor of activated T cell) pathway is involved in the process of cardiac diseases, such as cardiac hypertrophy, but its effect on myocardial fibrosis remains unclear. The present study ...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y2012-133

    authors: Chen QQ,Zhang W,Chen XF,Bao YJ,Wang J,Zhu WZ

    更新日期:2012-12-01 00:00:00

  • Activation by curare of acetylcholine receptor channels in a murine skeletal muscle cell line.

    abstract::Curare action on nicotinic acetylcholine receptors has a number of facets, of which the best known is competitive antagonism. Here we describe the weak agonist action of 10(-5) M curare on the murine skeletal muscle cell line, G8. Although curare induces no depolarization in G8 cells, single-channel recordings reveal ...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y89-025

    authors: Morris CE,Montpetit MR,Sigurdson WJ,Iwasa K

    更新日期:1989-02-01 00:00:00

  • Adrenergic-cholinergic interactions in left atria: interaction of carbachol with alpha- and beta-adrenoceptor agonists.

    abstract::The purpose of the present investigation was to determine the nature of the functional interaction of muscarinic agonists with cAMP-generating and cAMP-independent agonists in left atria. Negative inotropic responses of rabbit isolated left atrial strips to the muscarinic agonist carbachol were measured in the absence...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y86-099

    authors: MacLeod KM

    更新日期:1986-05-01 00:00:00

  • Implication of mitochondrial dysfunction and cell death in cold preservation--warm reperfusion-induced hepatocyte injury.

    abstract::Cold ischemia--warm reperfusion (CI/WR) injury of liver transplantation involves hepatocyte cell death, the nature and underlying mechanisms of which remain unclear. Isolated hepatocytes and isolated perfused livers were used to determine the prevalence of necrosis and apoptosis as well as mitochondrial dysfunction. I...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y06-014

    authors: Duval M,Plin C,Elimadi A,Vallerand D,Tillement JP,Morin D,Haddad PS

    更新日期:2006-05-01 00:00:00

  • Prophylactic effects of pomegranate (Punica granatum) juice on sodium fluoride induced oxidative damage in liver and erythrocytes of rats.

    abstract::The objective of this study was to investigate the protective effects of pomegranate (Punica granatum) juice (PGJ) on oxidative damages in liver tissue and erythrocytes of rats intoxicated by sodium fluoride (NaF). Rats were randomly divided into two groups: group I received standard diet and group II received orally ...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/cjpp-2015-0226

    authors: Bouasla A,Bouasla I,Boumendjel A,Abdennour C,El Feki A,Messarah M

    更新日期:2016-07-01 00:00:00

  • Regulation of canine skeletal muscle and hindlimb blood flow in acute anemia.

    abstract::Redistribution of blood flow away from resting skeletal muscles does not occur during anemic hypoxia even when whole body oxygen uptake is not maintained. In the present study, the effects of sympathetic nerve stimulation on both skeletal muscle and hindlimb blood flow were studied prior to and during anemia in anesth...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y88-019

    authors: Kubes P,Chapler CK,Cain SM

    更新日期:1988-02-01 00:00:00

  • The dihydropyridine analogue cerebrocrast blocks both T-type and L-type calcium currents.

    abstract::Cerebrocrast is a novel lipophilic dihydropyridine derivative with potential neuroprotective and antidiabetic properties. We have analyzed its interaction with L-type (CaV1.2b) and T-type (CaV3.1) calcium channels using a whole-cell patch clamp in HEK 293 cells. Cerebrocrast inhibited current flux through both CaV1.2b...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y09-086

    authors: Drígelová M,Tarabová B,Duburs G,Lacinová L

    更新日期:2009-11-01 00:00:00

  • Pharmacology of pertussis toxin B-oligomer.

    abstract::Pertussis toxin (PTX) is a heterohexameric protein, which is divided into subunits A and B. The A-subunit (protomer) possesses adenine diphosphate (ADP) ribosyltransferase activity, and the B-oligomer confers cell surface binding specificity on the toxin. By virtue of the ADP-ribosylation activity in the A-subunit, PT...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/cjpp-74-5-559

    authors: Wong WS,Rosoff PM

    更新日期:1996-05-01 00:00:00

  • Acetazolamide protects rat articular chondrocytes from IL-1β-induced apoptosis by inhibiting the activation of NF-κB signal pathway.

    abstract::Because the excessive apoptosis of articular chondrocytes contributes to extracellular matrix (ECM) loss and cartilage damage in rheumatoid arthritis (RA), inhibiting chondrocyte apoptosis might be a promising strategy for RA. Aquaporin1 (AQP1) is overexpressed in RA cartilage and synovial tissues, and play a vital pa...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/cjpp-2018-0334

    authors: Cai L,Chen WN,Li R,Liu MM,Lei C,Li CM,Qiu YY

    更新日期:2018-11-01 00:00:00

  • NMDA receptors in the dorsal hippocampal area are involved in tramadol state-dependent memory of passive avoidance learning in mice.

    abstract::The precise neurobiological mechanisms of tramadol abuse underlying the cognitive function are still unknown. The aim of the present study was to examine the possible effects of intra-CA1 injections of N-methyl-d-aspartate (NMDA), a glutamate NMDA receptor (NMDAR) agonist, and d,l-2-amino-5-phosphonopentanoic acid (DL...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/cjpp-2017-0228

    authors: Jafari-Sabet M,Mofidi H,Attarian-Khosroshahi MS

    更新日期:2018-01-01 00:00:00

  • Role of the anteroventral third ventricle region in fever in sheep.

    abstract::Ablation of the anteroventral third ventricle (AV3V) region, which includes the organum vasculosum laminae terminalis (OVLT), blocks the febrile response of guinea pigs to systemically injected endotoxin; by contrast, discrete lesions of the OVLT transiently enhance fever in rabbits and rats. To assess whether separat...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y87-200

    authors: Blatteis CM,Hales JR,McKinley MJ,Fawcett AA

    更新日期:1987-06-01 00:00:00

  • Effects of long-term cocaine administration and exercise on cardiac metabolism and isomyosin expression.

    abstract::Although chronic cocaine use is cardiotoxic, its use remains problematic in athletics. Hence adaptive changes induced in the heart by superimposing chronic cocaine use on an exercise training are of interest but remain poorly understood. Therefore this study investigated the effects of cocaine treatment combined with ...

    journal_title:Canadian journal of physiology and pharmacology

    pub_type: 杂志文章

    doi:10.1139/y94-001

    authors: Morris GS,Fiore PV,Hamlin RL,Sherman WM

    更新日期:1994-01-01 00:00:00