T Kling-Petersen

Learn 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)
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)
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)
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 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)
Tumour cells from a hepatic metastasis of a midgut carcinoid tumour were studied during 240 days of culture. A cell line could not be established, but the cells regularly formed large clusters and islets. The spontaneous release of serotonin (5-HT) and neuropeptide K-like immunoreactivity from cultures were followed. The amine and the peptide levels were(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)
  • 1