Abstract | PURPOSE: METHODS: RESULTS: Unlike that in normal adult brain, we observed Bcl-2 immunoreactivity in some of the remaining neurons dispersed throughout the hippocampus proper as well as in most of the reactive astroglia. Bax immunopositivity was increased in almost all neurons. Fractin immunostaining, an indicator of caspase activity, was detected in approximately 10% of these neurons. Despite increased Bax expression and activation of caspases, we could not find evidence for DNA fragmentation by TUNEL staining. We also could not detect typical apoptotic changes in nuclear morphology by Hoechst-33258 or hematoxylin counterstaining. CONCLUSIONS: These data suggest that either apoptosis is not involved in cell loss in MTS, or a very slow rate of cell demise may have precluded detecting TUNEL-positive neurons dying through apoptosis. Increased Bax expression and activation of caspases support the latter possibility.
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Authors | Hilmi Uysal, Isin Unal Cevik, Figen Soylemezoglu, Bulent Elibol, Yasemin Gursoy Ozdemir, Tulay Evrenkaya, Serap Saygi, Turgay Dalkara |
Journal | Epilepsia
(Epilepsia)
Vol. 44
Issue 6
Pg. 778-84
(Jun 2003)
ISSN: 0013-9580 [Print] United States |
PMID | 12790890
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Topics |
- Actin Cytoskeleton
(ultrastructure)
- Adult
- Age of Onset
- Apoptosis
- Astrocytes
(cytology, pathology)
- Cell Count
- Cell Death
- DNA Fragmentation
- Epilepsy, Temporal Lobe
(diagnosis, metabolism, pathology)
- Female
- Hippocampus
(cytology, pathology)
- Humans
- Immunohistochemistry
- In Situ Nick-End Labeling
(methods)
- Male
- Neurons
(cytology, pathology)
- Sclerosis
- Temporal Lobe
(pathology)
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