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Träfflista för sökning "WFRF:(Hokfelt T) srt2:(2005-2009)"

Sökning: WFRF:(Hokfelt T) > (2005-2009)

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51.
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  • Kanter Schlifke, Irene, et al. (författare)
  • Galanin gene transfer curtails generalized seizures in kindled rats without altering hippocampal synaptic plasticity
  • 2007
  • Ingår i: Neuroscience. - : Elsevier. - 1873-7544. ; 150:4, s. 984-992
  • Tidskriftsartikel (refereegranskat)abstract
    • Gene therapy-based overexpression of endogenous seizure-suppressing molecules represents a promising treatment strategy for epilepsy. Viral vector-based overexpression of the neuropeptide galanin has been shown to effectively suppress generalized seizures in various animal models of epilepsy. However, it has not been explored whether such treatment can also prevent the epileptogenesis. Using a recombinant adeno-associated viral (rAAV) vector, we induced hippocampal galanin overexpression under the neuron specific enolase promoter in rats. Here we report that in animals with galanin overexpression, the duration of electrographic afterdischarges was shortened and initiation of convulsions was delayed at generalized seizure stages. However, the hippocampal kindling development was unchanged. Short-term plasticity of mossy fiber-cornu ammonis (CA) 3 synapses was unaltered, as assessed by paired-pulse and frequency facilitation of field excitatory postsynaptic potentials (fEPSPs) in hippocampal slices, suggesting that despite high transgene galanin expression, overall release probability of glutamate in these synapses was unaffected. These data indicate that hippocampal rAAV-based galanin overexpression is capable of mediating anticonvulsant effects by lowering the seizure susceptibility once generalized seizures are induced, but does not seem to affect kindling development or presynaptic short-term plasticity in mossy fibers.
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59.
  • Kuteeva, E, et al. (författare)
  • Distribution of galanin in the brain of a galanin-overexpressing transgenic mouse
  • 2005
  • Ingår i: Neuropeptides. - 0143-4179 .- 1532-2785. ; 39:3, s. 293-298
  • Tidskriftsartikel (refereegranskat)abstract
    • The distribution of galanin mRNA-expressing cells and galanin-immuno reactive (I R) cell bodies and processes was studied in the brain of mice overexpressing galanin under the PDGF-B promoter (GalOE mice) and of wild type (WT) mice, both in colchicine-treated and non-treated animals. A widespread ectopic expression of galanin (both mRNA and peptide) was found, that is when neither transcript nor peptide could be seen in WT mice, not even after colchicine treatment. However, in some regions, such as claustrum, basolateral amygdala, thalamus, CA1 pyramidal cells, and Purkinje cells only galanin mRNA could be detected. The highest levels of galanin expression were observed in the Forebrain structures (the mitral cells of the olfactory bulb, throughout the cortex, granular and pyramidal cell layers of the hippocampus), in the mesencephalon (nucleus ruber), in the cerebellum (lateral cerebellar nucleus), in the pons (sensory and motor nuclei of the trigeminal nerve), within the medulla oblongata (facial, prepositus and spinal trigeminal nuclei). High densities of galanin-IR fibers were found in the axonal terminals of the lateral olfactory tract, hippocampal and presumably cerebellar mossy fiber system, in several thalamic and hypothalamic regions and the lower brain stem. (c) 2005 Elsevier Ltd. All rights reserved.
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  • Resultat 51-60 av 90
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