abstract：:The effect on the microcirculation of long term administration of the alpha 1 blocker prazosin, which increases peripheral blood flow, was studied in skeletal muscles with differing metabolic profiles. Prazosin (50 mg.litre-1), given ad libitum for 5 weeks in the drinking water, resulted in an increase in capillarity ...

journal_title：Cardiovascular research

authors： Dawson JM,Hudlická O

更新日期：1989-11-01 00:00:00

abstract：:The structural nature of fibrillar collagen involved in the replacement fibrosis which accompanies discrete areas of cell necrosis remains uncertain, as does its influence on the diastolic and systolic stiffness of the intact myocardium. This study, using 15 micron diameter microsphere embolisation of the rat myocardi...

journal_title：Cardiovascular research

authors： Carroll EP,Janicki JS,Pick R,Weber KT

更新日期：1989-08-01 00:00:00

abstract：:To define the interactions between blood and endocardium damaged by lactic acid, the left ventricles of 48 isolated continuously perfused and beating hearts were exposed for 0-4 hours to Krebs Henseleit buffer (KHB) with or without 33 mumol.ml-1 of lactic acid (pH 6.4). After excising its apex, the left ventricle was ...

journal_title：Cardiovascular research

authors： Carter G,Gavin JB

更新日期：1989-06-01 00:00:00

abstract：:We studied the effects of intravenously administered autonomic agents, the calcium channel blocker diltiazem, and Class I and III anti-arrhythmic agents on a re-entry model for atrial tachycardia in seven conscious dogs. The model was created by a Y-shaped incision in the intercaval region and front free wall of the r...

journal_title：Cardiovascular research

authors： Wu KM,Hunter T,Proakis A

更新日期：1989-05-01 00:00:00

abstract：:Although fully explored in larger animals, the role of injection site and sample microsphere content on variability of coronary blood flow (CBF) measurement using the microsphere technique remains controversial in rats despite the fact that this species is extensively used in cardiovascular research. We therefore inve...

journal_title：Cardiovascular research

authors： Wicker PA,Healy BP

更新日期：1989-05-01 00:00:00

abstract：:End tidal PCO2 (PETCO2) has been found to be a good prognostic indicator of successful resuscitation from cardiac arrest. To explore the value of this measurement further, we carried out a series of experiments during cardiac arrest and closed chest resuscitation in 14 mechanically ventilated Sprague-Dawley rats. Vent...

journal_title：Cardiovascular research

authors： von Planta M,von Planta I,Weil MH,Bruno S,Bisera J,Rackow EC

更新日期：1989-04-01 00:00:00

abstract：:Exaggerated cardiovascular responsiveness is common in young men and may cause non-specific symptoms and poor performance. Conventional autonomic function tests are not clinically useful. We have therefore designed a thermal entrainment method to evaluate sympathetic and parasympathetic cardiovascular function in subj...

journal_title：Cardiovascular research

authors： Lindqvist A,Parviainen P,Kolari P,Tuominen J,Välimäki I,Antila K,Laitinen LA

更新日期：1989-03-01 00:00:00

abstract：:Most of our knowledge about the modulation of platelet function by catecholamines is based on observations of acute in vitro actions. Little is known about the effects of chronically elevated or reduced adrenergic stimulation of the platelets. We therefore treated rats for 8 weeks with either adrenaline or the beta-bl...

journal_title：Cardiovascular research

authors： Terres W,Becker BF,Schrödl W,Gerlach E

更新日期：1989-02-01 00:00:00

abstract：:Zero drift may be a cause of imprecision when micromanometer tipped catheters are used for intravascular pressure measurement over long periods of time. Drift of only a few mm Hg may represent a significant error when accurate recording of low vascular pressures is required. To overcome this problem a micromanometer t...

journal_title：Cardiovascular research

authors： Gibbs JS,Cunningham D,Sparrow J,Poole-Wilson PA,Fox KM

更新日期：1989-02-01 00:00:00

abstract：:To determine the effect of an anteroseptal myocardial infarction on right ventricular systolic and diastolic function, we studied 12 pigs before and 1 h after left anterior descending coronary artery occlusion. Total arterial occlusion was achieved by the percutaneous, transcatheter placement of a 1 mm Teflon plug int...

journal_title：Cardiovascular research

authors： Lancaster LD,Kern KB,Morrison DA,Olajos M,Goldman S

更新日期：1989-01-01 00:00:00

abstract：:The effects of increasing oxygen tension from fetal to neonatal levels and of incubation in the cyclo-oxygenase inhibitor, indomethacin, on the response of isolated rings of neonatal rabbit ductus arteriosus and aorta to noradrenaline were studied in vitro. Increasing oxygen tension did not affect the sensitivity, as ...

journal_title：Cardiovascular research

authors： Smith GC,McGrath JC

更新日期：1988-12-01 00:00:00

abstract：:Because of ventricular interdependence, part of the measured left ventricular diastolic pressure can be attributed to the right ventricle. Therefore, we examined the hypothesis that left ventricular diastolic properties are modified by alterations in right ventricular compliance and pressure even without a change in r...

journal_title：Cardiovascular research

authors： Santamore WP,Constantinescu M,Vinten-Johansen J,Johnston WE,Little WC

更新日期：1988-11-01 00:00:00

abstract：:The effect of chronic propranolol administration (2 mg.kg-1.d-1 for 14d) and withdrawal on microvascular perfusion was studied in rabbit myocardium. Fluorescein isothiocyanate-dextran was injected into four groups of anaesthetised open chest rabbits. Fluorescent microscopy was used to identify the perfused vessels and...

journal_title：Cardiovascular research

authors： Acad BA,Shenko JM,Eliades D,Weiss HR

更新日期：1988-11-01 00:00:00

abstract：:The influence of experimental diabetes on the endothelium mediated relaxation and contractile responses of canine isolated coronary arteries was studied in arteries removed from alloxan treated diabetic (280 mmol.kg-1) and control mongrel dogs. Strips with and without endothelium were suspended in Krebs bicarbonate so...

journal_title：Cardiovascular research

authors： Gebremedhin D,Koltai MZ,Pogátsa G,Magyar K,Hadházy P

更新日期：1988-08-01 00:00:00

abstract：:Since data on velocity fields in the ascending aorta downstream of normal aortic valves in pigs have not yet been obtained velocity profiles were visualised using a hot film anemometer needle probe before and after total cardiopulmonary bypass and cold cardioplegic arrest. Furthermore, measurements were made during in...

journal_title：Cardiovascular research

authors： Hasenkam JM,Ostergaard JH,Pedersen EM,Paulsen PK,Nygaard H,Schurizek BA,Johannsen G

更新日期：1988-07-01 00:00:00

abstract：:Segments of the canine ascending aorta, upper descending thoracic aorta, and middle descending thoracic aorta were instrumented with ultrasonic dimension gauges and a cathetertip manometer simultaneously to measure changes in segment diameter, length, and intravascular pressure. Volume distensibility (EV) was calculat...

journal_title：Cardiovascular research

authors： Gentile BJ,Gross DR,Chuong CJ,Hwang NH

更新日期：1988-06-01 00:00:00

abstract：:The effect of circulation time on plasma high density lipoprotein cholesterol concentrations was investigated in 20 male Wistar rats injected with alcohol, stressed with lighting, or fed a high fat diet. Circulation time was measured during anaesthesia with a computerised dichromatic earpiece densitometer. Indocyanine...

journal_title：Cardiovascular research

authors： Ishizuka T

更新日期：1988-05-01 00:00:00

abstract：:The hypothesis that cardiac surgery to interrupt accessory pathways also interrupts autonomic nerves to the canine ventricle and to the atrioventricular node was tested in four groups of dogs. Group 1 (n = 6) underwent dissection of the atrioventricular fat tissue and cryolesion created by application of a cryoprobe a...

journal_title：Cardiovascular research

authors： Inoue H,Mahomed Y,Kovacs RJ,Zipes DP

更新日期：1988-03-01 00:00:00

abstract：:The rate of QT adaptation to abrupt changes in pacing rate was studied in seven patients with newly diagnosed complete heart block with a ventricular escape rate of less than 40 beats.min-1. Their median age was 70 (range 36-84) years, and none was taking any cardioactive medication known to affect the QT interval. Fr...

journal_title：Cardiovascular research

authors： Lau CP,Freedman AR,Fleming S,Malik M,Camm AJ,Ward DE

更新日期：1988-01-01 00:00:00

abstract：:Circulating concentrations of leucocyte elastase and free radical activity were measured in 11 adults undergoing cardiopulmonary bypass. In all patients the bypass procedure was associated with pronounced changes in plasma elastase concentrations, and peak enzyme concentrations correlated closely with the duration of ...

journal_title：Cardiovascular research

authors： Hind CR,Griffin JF,Pack S,Latchman YE,Drake HF,Jones HM,Brostoff J,Dormandy TL,Treasures T

更新日期：1988-01-01 00:00:00

abstract：:Surgical preparation of human saphenous vein for coronary artery bypass grafting involving distension and storage in iso-osmotic sodium chloride solution reduced tissue adenosine triphosphate (ATP) (mean(SEM] concentration from 280(20) nmol.g-1 wet wt (n = 25) to 140(30) nmol.g-1 wet wt (n = 12) and the adenosine trip...

journal_title：Cardiovascular research

authors： Angelini GD,Passani SL,Breckenridge IM,Newby AC

更新日期：1987-12-01 00:00:00

abstract：:The effect of acetylcholine on the aconitine induced delayed afterdepolarisation and triggered electrical activities under nominally calcium free conditions were studied in frog atrium and ventricle. The changes in intracellular potassium activity were also examined. The aconitine induced delayed afterdepolarisation a...

journal_title：Cardiovascular research

authors： Sawanobori T,Hirano Y,Hiraoka M

更新日期：1987-11-01 00:00:00

abstract：:The static mechanical properties of major branches of the human arteries (common carotid artery, abdominal aorta, femoral artery, and brachial artery) were studied in 39 subjects, aged 6-81 years, using an ultrasonic phase locked echo tracking system that allows continuous transcutaneous measurement of the diameter of...

journal_title：Cardiovascular research

authors： Kawasaki T,Sasayama S,Yagi S,Asakawa T,Hirai T

更新日期：1987-09-01 00:00:00

abstract：:To evaluate the effect of beta blockade on energy metabolism in ischaemic myocardium metoprolol tartrate in doses of 0.2 or 0.5 mg.kg-1 or saline was injected into 24 anaesthetised dogs 20 min after coronary ligation. Regional myocardial blood flow was measured by the hydrogen gas clearance method, and the heart rate ...

journal_title：Cardiovascular research

authors： Nanki M,Itoh K,Matsubara T,Nishimura K,Kambe T,Sugiyama S,Ozawa T,Sakamoto N

更新日期：1987-09-01 00:00:00

abstract：:The effects of both gradual and abrupt coronary occlusion on regional wall function (sonomicrometry) and left ventricular relaxation were studied in the intact dog heart. The ischaemic dysfunction observed in the two interventions as assessed by pressure-length loops showed considerably different patterns. The regiona...

journal_title：Cardiovascular research

authors： Doyle RL,Foëx P,Ryder WA,Jones LA

更新日期：1987-07-01 00:00:00

abstract：:A recently developed highly sensitive radioimmunoassay method for detecting plasma kinin was used to re-evaluate the results of previous studies, in which plasma kinin had been measured with a bioassay method. To clarify the mechanism of plasma kinin release in global myocardial ischaemia the left main coronary artery...

journal_title：Cardiovascular research

authors： Matsuki T,Shoji T,Yoshida S,Kudoh Y,Motoe M,Inoue M,Nakata T,Hosoda S,Shimamoto K,Yellon D

更新日期：1987-06-01 00:00:00

abstract：:Since increases in blood pressure may be effectively controlled by hydraulic feedback by reducing the venous return through the inferior vena cava in proportion to the blood pressure this principle was applied using a totally implantable extravascular system consisting of a periaortic blood pressure sensor and a peric...

journal_title：Cardiovascular research

authors： Sideris DA,Vardas PE,Chrysos DN,Toumanidis ST,Michalis L,Moulopoulos SD

更新日期：1987-05-01 00:00:00

abstract：:The acute haemodynamic effects of taurine were studied in normal and in beta blocker (propranolol) or calcium antagonist (diltiazem) treated rabbits and in rabbits with experimentally produced chronic aortic regurgitation. The administration of taurine (25 mg.kg-1) did not affect heart rate and left ventricular end di...

journal_title：Cardiovascular research

authors： Awata N,Azuma J,Hamaguchi T,Tanaka Y,Ohta H,Takihara K,Harada H,Sawamura A,Kishimoto S

更新日期：1987-04-01 00:00:00

abstract：:To examine how end systole differs from end ejection and also whether the slope of the end systolic pressure-volume relation can be approximated to that of the end ejection pressure-volume relation, nine isolated, perfused, paced canine hearts ejecting into a hydraulic loading system that simulated the aortic input im...

journal_title：Cardiovascular research

authors： Nishioka O,Maruyama Y,Ashikawa K,Isoyama S,Satoh S,Suzuki H,Watanabe J,Watanabe H,Shimizu Y,Ino-Oka E

更新日期：1987-02-01 00:00:00

abstract：:In the superior vena cava of anaesthetised open chest dogs the axial pressure gradient was measured simultaneously with the blood flow velocity under different preload conditions. Both pressure gradient and velocity curves showed distinct systolic and diastolic waves. Peak pressure gradient ranged between 26 and 93 Pa...

journal_title：Cardiovascular research

authors： Minten J,Van de Werf F,Eaubert A,De Geest H

更新日期：1986-12-01 00:00:00

abstract：:A pulsed, range gated, directional, ultrasonic, Doppler blood velocity meter was used to record signals from the pulmonary artery in 52 normal subjects ranging in age from less than 1 week to over 30 years. Signals were obtained from an unfocused transducer in the second or third left intercostal space using a 2.25 MH...

journal_title：Cardiovascular research

authors： Targett RC,Heldt GP,McIlroy MB

更新日期：1986-11-01 00:00:00

abstract：:There is mounting interest in the use of the monophasic action potential for electrophysiological investigation of regional myocardial ischaemia. There is, however, no systematic study of the relation between the changes in monophasic action potential and regional myocardial blood flow. In this study monophasic action...

journal_title：Cardiovascular research

authors： Kingaby RO,Lab MJ,Cole AW,Palmer TN

更新日期：1986-10-01 00:00:00

abstract：:Acute occlusions of the proximal left circumflex coronary arteriovenous pedicle were performed in open chest anaesthetised dogs. Twenty eight dogs were randomly allocated to receive acebutolol (3 mg X kg-1 twice daily) or placebo given blindly by mouth for five days; a control group of 14 dogs without any pretreatment...

journal_title：Cardiovascular research

authors： Puddu PE,Jouve R,Langlet F,Guillen JC,Fornaris M,Torresani J,Reale A

更新日期：1986-10-01 00:00:00

abstract：:The effects of hypoxia and subsequent reoxygenation were examined in isolated left ventricular papillary muscles from the rat at 28 degrees C and 33 degrees C. Studies of relaxation were carried out in isometric and physiologically sequenced contractions. In studies of isometric contractions, the following variables w...

journal_title：Cardiovascular research

authors： Nakamura Y,Wiegner AW,Bing OH

更新日期：1986-09-01 00:00:00

abstract：:Papillary muscles isolated from the left ventricle of 17-20 day old Syrian hamsters with genetic cardiomyopathy (BIO 14.6 strain) were examined for their mechanophysiological response to the beta adrenoceptor agonist isoprenaline. The indices of isometric twitch for both myopathic and aged matched normal (BIO RB strai...

journal_title：Cardiovascular research

authors： Rossner KL,Coudrai PR

更新日期：1986-08-01 00:00:00

abstract：:The effects of L-propionylcarnitine on the recovery of cardiac contractile performance after global ischaemia and reperfusion were studied in isolated perfused rat hearts. The addition of either 5.5 or 11 mmol X litre-1 L-propionylcarnitine significantly improved the recovery of cardiac output, left ventricular pressu...

journal_title：Cardiovascular research

authors： Paulson DJ,Traxler J,Schmidt M,Noonan J,Shug AL

更新日期：1986-07-01 00:00:00

abstract：:The response of a simple systolic time interval, the interval between the Q wave and the onset of the aortic blood pressure pulse (the QA interval), to changes in cardiac contractility, cardiac loading, and heart rate was evaluated in anaesthetised open chest dogs. The QA interval was found to be sensitive to increase...

journal_title：Cardiovascular research

authors： Cambridge D,Whiting MV

更新日期：1986-06-01 00:00:00

abstract：:Arterial blood pressures were measured simultaneously in the thoracic and abdominal aortas in the same conscious rats. Intravenous administration of sodium nitroprusside caused a greater fall in systolic blood pressure in the abdominal aorta than in the thoracic aorta, whereas intravenous administration of methoxamine...

journal_title：Cardiovascular research

authors： Gardiner SM,Bennett T

更新日期：1986-05-01 00:00:00

abstract：:To investigate the effects of sodium-potassium activated adenosine triphosphatase inhibition on central cardiovascular regulation a microinjection of ouabain was given into the hypothalamus of urethane anaesthetised rats. Doses of 0.01-1.0 micrograms per rat injected into the posterior hypothalamus produced a rise in ...

journal_title：Cardiovascular research

authors： Iyoda I,Takahashi H,Lee LC,Okajima H,Inoue A,Sasaki S,Takeda K,Yoshimura M,Ijichi H

更新日期：1986-04-01 00:00:00

abstract：:Sinoatrial conduction times, estimated by premature atrial stimulation, were compared with direct measurement of the sinoatrial conduction time in 15 isolated rabbit sinus node preparations before and after intrasinusal pacemaker shifts induced by cooling. Transmembrane potentials and surface electrograms were recorde...

journal_title：Cardiovascular research

authors： Le Heuzey JY,Guize L,Valty J,Moutet JP,Kouz S,Lavergne T,Boutjdir M,Peronneau P

更新日期：1986-02-01 00:00:00