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Diurnal variations of neurocardiac rhythms in acute myocardial infarction.

The American journal of cardiology

Kamath MV, Fallen EL.
PMID: 1676558
Am J Cardiol. 1991 Jul 15;68(2):155-60. doi: 10.1016/0002-9149(91)90736-5.

To determine the diurnal pattern of cardiac autonomic tone in acute myocardial infarction (AMI), this study examined the power spectrum of heart rate (HR) variability in 24 patients during a single 24-hour segment within 4 days of AMI. Patients...

A presynaptic excitatory M1 muscarine receptor at postganglionic cardiac noradrenergic nerve fibres that is activated by endogenous acetylcholine.

Naunyn-Schmiedeberg's archives of pharmacology

Habermeier-Muth A, Altes U, Forsyth KM, Muscholl E.
PMID: 2090950
Naunyn Schmiedebergs Arch Pharmacol. 1990 Nov;342(5):483-9. doi: 10.1007/BF00169033.

Rabbit atria were isolated with the extrinsic right vagus and sympathetic nerves intact and perfused with Tyrode solution. Noradrenaline overflow evoked by sympathetic nerve stimulation (SNS) at 3 Hz for 3 min was determined before, during, and after vagus...

Synthesis and preliminary evaluation of carbon-11-meta-hydroxyephedrine: a false transmitter agent for heart neuronal imaging.

Journal of nuclear medicine : official publication, Society of Nuclear Medicine

Rosenspire KC, Haka MS, Van Dort ME, Jewett DM, Gildersleeve DL, Schwaiger M, Wieland DM.
PMID: 2384800
J Nucl Med. 1990 Aug;31(8):1328-34.
Free Article

Carbon-11-meta-hydroxyephedrine is a new radiotracer developed for mapping the sympathetic nerves of the heart. Carbon-11-meta-hydroxyephedrine is synthesized by direct N-methylation of metaraminol with [11C]methyl iodide in dimethyl formamide/dimethyl sulfoxide and purified by semi-preparative reversed-phase HPLC. Total synthesis time is...

Modulation of noradrenaline release by presynaptic alpha-2 and beta adrenoceptors in rat atria. Effect of pretreatment with clenbuterol.

Naunyn-Schmiedeberg's archives of pharmacology

Kazanietz MG, Enero MA.
PMID: 2554153
Naunyn Schmiedebergs Arch Pharmacol. 1989 Sep;340(3):274-8. doi: 10.1007/BF00168510.

The effect of pretreatment with the beta-2-selective adrenoceptor agonist, (+/-)-clenbuterol (0.3 mg/kg, twice daily, 14 days) on prejunctional alpha-2- and beta-adrenoceptors was studied in rat atria. When atria from non-pretreated rats had been preincubated with (3H)-noradrenaline, (-)-isoprenaline (0.02 to...

[Parasympathetic origin of atropine- and metacine-induced tachycardia].


Smirnov VM.
PMID: 2046249
Kardiologiia. 1991 Jan;31(1):5-7.

No abstract available.

Ventricular sensory endings mediate reflex bradycardia during coronary arteriography in humans.


Arrowood JA, Mohanty PK, Hodgson JM, Dibner-Dunlap ME, Thames MD.
PMID: 2805265
Circulation. 1989 Nov;80(5):1293-300. doi: 10.1161/01.cir.80.5.1293.

It has been suggested that the response to the intracoronary injection of radiographic contrast is reflex in origin and results from stimulation of ventricular sensory endings. Cardiac transplantation results in denervation of the ventricles, and thus, may interrupt the...

Blockage of the fast sodium current by dimethindene in frog auricular fibres.

Naunyn-Schmiedeberg's archives of pharmacology

Mészáros J, Markó R, Kelemen K, Kecskeméti V.
PMID: 2438562
Naunyn Schmiedebergs Arch Pharmacol. 1987 Mar;335(3):321-5. doi: 10.1007/BF00172804.

The effect of dimethindene (DMI) on action potential and fast inward Na current (INa) of frog atrial fibres was studied using double sucrose gap voltage-clamp technique. DMI reduced the amplitude and maximum rate of rise of the action potentials...

Spectrum analysis of heart rate variations as a marker of spinal cord damage.

Critical care medicine

Kimura T, Takezawa J, Komatsu T, Shimada Y.
PMID: 1986882
Crit Care Med. 1991 Jan;19(1):127-8. doi: 10.1097/00003246-199101000-00034.

No abstract available.

Morphogenesis of adrenergic cells in a frog parasympathetic ganglion.

The Journal of comparative neurology

Heathcote RD, Chen A.
PMID: 1874979
J Comp Neurol. 1991 Jun 01;308(1):139-48. doi: 10.1002/cne.903080112.

The development of the parasympathetic cardiac ganglion of the frog Xenopus laevis was marked by the differentiation of a population of adrenergic small intensely fluorescent (SIF) cells. The neural crest contributes precursors for both SIF cells and the well-studied...

The effect of endothelin on noradrenergic transmission in rat and guinea-pig atria.

European journal of pharmacology

Reid JJ, Wong-Dusting HK, Rand MJ.
PMID: 2555203
Eur J Pharmacol. 1989 Sep 01;168(1):93-6. doi: 10.1016/0014-2999(89)90637-7.

Pre-and postjunctional effects of 10 nM endothelin have been studied in rat and guinea-pig spontaneously beating isolated atria. Endothelin increased the rate and force of contraction of atria from both species, but decreased the positive inotropic and chronotropic responses...

Relative roles of cardiac and arterial baroreceptors in vasopressin regulation during hemorrhage in conscious dogs.

Circulation research

Shen YT, Cowley AW, Vatner SF.
PMID: 2019000
Circ Res. 1991 May;68(5):1422-36. doi: 10.1161/01.res.68.5.1422.

To determine the relative roles of cardiac and sinoaortic baroreceptors in mediation of arginine vasopressin (AVP) release, hemorrhage was performed in five groups of conscious splenectomized dogs: 1) all nerves intact; 2) either chronic surgical or acute pharmacological (intrapericardial...

Analysis of the cardiac stimulant properties of (3,4-dihydroxyphenyl)-cyclopropylamine (ASL-7003) and 2-amino-6,7-dihydroxy-1,2,3,4-tetrahydronaphthalene (A6,7DTN).

The Journal of pharmacology and experimental therapeutics

Gorczynski RJ, Anderson WG, Erhardt PW, Stout DM.
PMID: 222894
J Pharmacol Exp Ther. 1979 Aug;210(2):252-8.

No abstract available.

Showing 1 to 12 of 8086 entries