Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/26737

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Title
Autonomous activity and autophosphorylation of CAMPK-II in rat hippocampal slices: effects of tissue preparation
Author/Creator
Lengyel, I.;  Cammarota, M.;  Brent, V. A.;  Rostas, J. A. P.
Description
Measurement of the proportion of calcium/calmodulin-stimulated protein kinase II (CaMPK-II) that is autonomously active or phosphorylated on Thr286 is thought to provide an index of the degree to which CaMPK-II in a tissue has been activated. We have examined how various ways of handling hippocampal tissue can alter these properties. Both autonomous activity and phospho-Thr²⁸⁶ content was high in freshly dissected hippocampus or freshly cut hippocampal slices. After incubation of hippocampal slices in artificial cerebrospinal fluid for 120 min, both properties of CaMPK-II decreased to a steady state level. Freeze–thaw or cutting the equilibrated slices could rapidly increase both autonomous activity and phospho-Thr²⁸⁶ immunoreactivity of CaMPK-II. These increases were comparable to changes induced by experimental treatment. Therefore, our results suggest that considerable care needs to be taken over the way in which hippocampal slices are handled.
Relation
Journal of Neurochemistry Vol. 76, Issue 1, p. 149-154
Publisher Link
http://dx.doi.org/10.1046/j.1471-4159.2001.00058.x
Date
2001
Publisher
Blackwell Publishing Ltd
Keyword(s)
calcium;  calmodulin kinase;  freeze-thaw;  hippocampal slices;  methodology;  protein phosphorylation
Resource Type
journal article
Identifier
http://hdl.handle.net/1959.13/26737
Identifier
ISSN:0022-3042
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Subject
"Journal of Neurochemistry"
 
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