T Kling-Petersen

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Compounds showing an in vitro binding preference for the dopamine D3 receptor were tested in two models designed to assess positive reinforcement in the rat: intracranial self-stimulation (ICSS) and conditioned place preference (CPP). R-(+)-7-OH-DPAT, a D3 preferring agonist, inhibited ICSS behaviour over a wide dose range. At higher doses, a facilitation(More)
The dopamine autoreceptor and D3 preferring antagonist [cis-(+)-5-methoxy-1-methyl-2-(di-n-propylamino)tetralin] (+)-UH232, exerts weak stimulatory effects when tested in locomotor activity experiments using habituated animals. (+)-UH232 also blocks d-amphetamine-, cocaine-, and apomorphine-induced hyperactivity, but fails to induce catalepsy. Thus, the(More)
Previous electrophysiological experiments have emphasized the importance of the firing pattern for the functioning of midbrain dopamine (DA) neurons. In this regard, excitatory amino acid receptors appear to constitute an important modulatory control mechanism. In the present study, extracellular recording techniques were used to investigate the(More)
In an in vitro model for mitogenic activity in cloned Chinese hamster ovary (CHO) cells expressing rat dopamine D2 or D3 receptors, the EC50D2/EC50D3 ratios for the agonists, apomorphine, (+)-3-hydroxy-N-n-propyl-phenylpiperidine ((+)-3-PPP), quinpirole, R-(+)-7-hydroxy-2-(di-n-propylamino)tetralin (R-(+)-7-OH-DPAT) and pramipexole (SND919) were found to be(More)
Intracranial self-stimulation (ICSS) in the rat is a useful tool for studying the importance of various brain monoamines in positive reinforcement. The effects of compounds interacting with dopaminergic neurotransmission is measurable by studying the changes of reward thresholds. By computerisation of the analysis of these thresholds, standardisation and(More)
Compounds showing an in vitro binding preference for the dopamine D3 vs. D2 receptors were tested for effects on locomotor activity after local application in the nucleus accumbens (N Acc) and the ventral tegmental area (VTA) of the rat brain. R-(+)-7-OH-DPAT, a dopamine D3 preferring agonist, inhibited spontaneous locomotor activity over a wide dose range(More)
The BRAIN-project is an endeavor in using computer aided learning to improve the understanding of the human brain anatomy. The project consists of four parts, each based on modular packages: BRAINIMAGES: Brain atlas consisting of horizontal and frontal brain slices spaced I mm apart enabling the identification of structures and areas of the brain. The(More)
This paper describes in detail a cytofluorimetric scanning technique used for studying amounts of material axonally transported in antero- and retrograde direction in peripheral nerves. Operating procedures, preparation of tissues and instrumental set-up are described. The basis for quantification of material in a nerve section treated for(More)
The preferential dopamine autoreceptor, and slightly D3 preferring, antagonist (+)-UH232 (cis-(+)-(1S,2R)-5-methoxy-1-methyl-2-(n-dipropylamino) tetralin) increases locomotor activity and synaptic dopamine release in the nucleus accumbens and striatum after systemic administration to the rat. As shown in this study, (+)-UH232, was unable to produce an(More)
As revealed by locomotor activity experiments in rodents, cis-(1S,2R)-5-methoxy-1-methyl-(2-n-propylamino)tetralin [(+)-AJ76] is a preferential dopamine autoreceptor antagonist that produces stimulatory or weak inhibitory behavioral effects in animals that display low or high baseline activity, respectively. In the present study, the possible positive(More)
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