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Träfflista för sökning "WFRF:(Sandin J) srt2:(1995-1999)"

Sökning: WFRF:(Sandin J) > (1995-1999)

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  • Sandin, J, et al. (författare)
  • Hippocampal dynorphin B injections impair spatial learning in rats : a kappa-opioid receptor-mediated effect
  • 1998
  • Ingår i: Neuroscience. - 0306-4522 .- 1873-7544. ; 85:2, s. 375-382
  • Tidskriftsartikel (refereegranskat)abstract
    • The hippocampus plays a central role in the acquisition and storage of information. Long-term potentiation in the mossy fibre pathway to the CA3 region in the hippocampus, an animal model of memory acquisition, is modulated by dynorphin peptides. This study investigated the possible role of hippocampal dynorphin in spatial learning. Male rats were trained in the Morris Water Task after microinjection with different doses of dynorphin B (1, 3.3 or 10 nmol/rat) or artificial cerebrospinal fluid (as control) into the CA3 region of the dorsal hippocampus. Dynorphin B was found to impair spatial learning at all tested doses. The synthetic kappa1-selective opiate receptor antagonist nor-binaltorphimine (2 nmol) also given into the hippocampus fully blocked the acquisition impairment caused by dynorphin B (10 nmol), while nor-binaltorphimine alone did not affect learning performance. These findings suggest that dynorphin peptides could play a modulatory role in hippocampal plasticity by acting on hippocampal kappa-receptors and thereby impair spatial learning.
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  • Enlund, M, et al. (författare)
  • Narkosdosering ­ en svår balansgång
  • 1998
  • Ingår i: Läkartidningen. - 0023-7205. ; 95:48, s. 5477-5482
  • Tidskriftsartikel (refereegranskat)abstract
    • The optimal dosage of anaesthetic agents may be difficult. Not only does the intensity of surgical stimuli vary during a surgical procedure, but drug sensitivity varies between subjects exposed to comparable stimuli. Moreover, clinically monitored body reactions do not always reflect the balance between central nervous system effects of the surgical stimuli and of the anaesthetic agent. Therefore, the specialist in anaesthesiology requires access to additional methods of monitoring to enable dosage to be optimised for each patient, minute by minute, thus improving the chances of maintaining an appropriate depth of anaesthesia. Two electro-encephalographic techniques are presented in the article, and aspects of under- and over-dosage of anaesthetic agents are discussed.
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