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Calpain activation ...
Calpain activation is involved in early caspase-independent neurodegeneration in the hippocampus following status epilepticus
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Araujo, IM (författare)
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- Gil, Joana (författare)
- Lund University,Lunds universitet,Institutionen för experimentell medicinsk vetenskap,Medicinska fakulteten,Department of Experimental Medical Science,Faculty of Medicine
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Carreira, BP (författare)
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- Mohapel, Paul (författare)
- Lund University,Lunds universitet,Wallenberg Neurocentrum, Lund,Medicinska fakulteten,Wallenberg Neuroscience Centre, Lund,Faculty of Medicine
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- Petersén, Åsa (författare)
- Lund University,Lunds universitet,Translationell neuroendokrinologi,Forskargrupper vid Lunds universitet,Translational Neuroendocrinology,Lund University Research Groups
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Pinheiro, PS (författare)
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- Soulet, Denis (författare)
- Lund University,Lunds universitet,Institutionen för experimentell medicinsk vetenskap,Medicinska fakulteten,Department of Experimental Medical Science,Faculty of Medicine
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Bahr, BA (författare)
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- Brundin, Patrik (författare)
- Lund University,Lunds universitet,Institutionen för experimentell medicinsk vetenskap,Medicinska fakulteten,Department of Experimental Medical Science,Faculty of Medicine
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Carvalho, CM (författare)
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(creator_code:org_t)
- Wiley, 2008
- 2008
- Engelska.
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Ingår i: Journal of Neurochemistry. - : Wiley. - 1471-4159 .- 0022-3042. ; 105:3, s. 666-676
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Evidence for increased calpain activity has been described in the hippocampus of rodent models of temporal lobe epilepsy. However, it is not known whether calpains are involved in the cell death that accompanies seizures. In this work, we characterized calpain activation by examining the proteolysis of calpain substrates and in parallel we followed cell death in the hippocampus of epileptic rats. Male Wistar rats were injected with kainic acid (KA; 10 mg/kg) intraperitoneally and sacrificed 24h later, after development of grade 5 seizures. We observed a strong Fluoro-Jade labelling in the CA1 and CA3 areas of the hippocampus in the rats that received KA, as compared to saline-treated rats. Immunohistochemistry and Western blot analysis for the calpain-derived breakdown products of spectrin (SBDP) showed evidence of increased calpain activity in the same regions of the hippocampus where cell death is observed. No evidence was found for caspase activation, in the same conditions. Treatment with the calpain inhibitor MDL 28170 significantly prevented the neurodegeneration observed in CA1. Taken together, our data suggest that early calpain activation, but not caspase activation, is involved in neurotoxicity in the hippocampus after status epilepticus.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Neurovetenskaper (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Neurosciences (hsv//eng)
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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Araujo, IM
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Gil, Joana
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Carreira, BP
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Mohapel, Paul
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Petersén, Åsa
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Pinheiro, PS
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visa fler...
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Soulet, Denis
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Bahr, BA
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Brundin, Patrik
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Carvalho, CM
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visa färre...
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- MEDICIN OCH HÄLSOVETENSKAP
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MEDICIN OCH HÄLS ...
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och Medicinska och f ...
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och Neurovetenskaper
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Journal of Neuro ...
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Lunds universitet