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Drug distribution in spinal cord during administration with spinal loop dialysis probes in anaesthetized rats
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Comparative Medicine.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Comparative Medicine.
2007 (English)In: Basic & Clinical Pharmacology & Toxicology, ISSN 1742-7835, E-ISSN 1742-7843, Vol. 100, no 3, 196-200 p.Article in journal (Refereed) Published
Abstract [en]

The present investigation aimed to study two methodological concerns of an experimental model, where a spinal loop dialysis probe is used for administration of substances to the spinal cord and sampling of neurotransmitters by microdialysis from the same area of anaesthetized rats. [3H]Epibatidine in concentrations of 1, 10 and 100 nM was dissolved in Ringer's solution and administered through the dialysis membrane into the dorsal region of the cervical spinal cord. First, the outflow of [3H]epibatidine from the probe into the spinal cord was examined with respect to different concentrations and changes over time. Then, the distribution of the different [3H]epibatidine concentrations along the spinal cord was studied. It was found that the percentage of [3H]epibatidine entering the spinal cord did not differ between different administered concentrations after a stabilization period of 60 min. The administered [3H]epibatidine was found to be distributed to the area closest to the dialysis probe and not dispersed along the spinal cord, and the distribution was equal for all concentrations. The data presented in this investigation provide information, which is important for interpretation of data from intraspinal administration of substances through the spinal loop dialysis probe.

Place, publisher, year, edition, pages
2007. Vol. 100, no 3, 196-200 p.
Keyword [en]
Central nervous system, Pharmacokinetics, Vertebrata, Mammalia, Rodentia, Rat, Animal, Dialysis, Spinal cord, Distribution, Drug
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-26513DOI: 10.1111/j.1742-7843.2006.00034.xISI: 000244244100009OAI: oai:DiVA.org:uu-26513DiVA: diva2:54287
Available from: 2007-02-19 Created: 2007-02-19 Last updated: 2017-12-07Bibliographically approved

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Abelson, Klas S. P.

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