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The effects of urapidil, of the selective 5-HT1A receptor agonist (+/-)-8-hydroxy-2-(di-n-propylamino)tetralin (8-OH-DPAT), and of the alpha 2-adrenoceptor agonist clonidine on the in vivo rate of synthesis of 5-hydroxytryptamine (5-HT) were determined in rat brain cortex and hypothalamus. Urapidil (10 mg/kg), 8-OH-DPAT (0.3 mg/kg) or clonidine (0.3 mg/kg;(More)
The possibility of fabricating nanoparticles by ion bombardment was investigated by the ion bombardment of indium films on oxide covered Si and Cr surfaces. The different masses of implanting specimen ensured the different energy transfer while the same Si substrate ensured the same thermal conductivity for the In and Cr layers. Chromium served as a(More)
Experiments on two different inhibitory presynaptic receptor systems are presented. 1. Superfused and electrically stimulated brain slices are a widely used experimental model to study the release of noradrenaline and its modulation by inhibitory alpha-2 adrenoceptors. By using a minisuperfusion chamber we succeeded in studying the simplest case of(More)
The effects of acute, progressive haemorrhage, 1 ml/s were examined in the same mongrel dogs on separate days, unanaesthetized and anaesthetized with morphine (2 mg/kg i.v.) and with administration of nasal oxygen to maintain arterial blood gases at physiological levels. In normal, unanaesthetized dogs mean arterial pressure was well maintained through 30(More)
This study examined the impact of enflurane (3%) on the hemodynamic and humoral defense mechanisms in a canine model of hemorrhagic shock. In order to obtain reasonable reference values with confounding influences of anesthesia and recent surgical preparation, the dogs were chronically instrumented 8-10 days prior to the experiments enabling measurements in(More)
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