Analyses of neuronal damage in excitotoxically lesioned organotypic hippocampal slice cultures

Annals of Anatomy = Anatomischer Anzeiger : Official Organ of the Anatomische Gesellschaft
Fahim EbrahimiFaramarz Dehghani

Abstract

Organotypic hippocampal slice cultures (OHSCs) are widely used to study the mechanisms of neurodegeneration and neuroprotection. However, there are still controversies about the most appropriate method for quantification of neuronal damage. The response to excitotoxic lesions can be determined by propidium iodide (PI) staining, which labels nuclei of degenerating cells. Semiquantitative measurements of PI staining are based on (1) recording of the propidium iodide (PI) fluorescence intensity or (2) counting of PI positive neuronal nuclei. Here, we investigated OHSCs lesioned by the application of increasing NMDA concentrations (10microM, 50microM and 500microM) at 6 days in vitro (div) for 4h or left untreated, respectively. After 9 div, PI staining was performed and the staining determined in the dentate gyrus and cornu ammonis (CA1) by measurement of PI-fluorescence intensity or by counting PI(+)-nuclei with a confocal laser scanning microscope. The fluorescence intensity of lesioned OHSCs did not show a NMDA concentration dependent difference. In contrast, confocal laser scanning microscopy revealed a significant and dose-dependent increase in the number of PI(+)-nuclei. Linear regression analysis showed a high correlation b...Continue Reading

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Citations

Dec 15, 2015·Journal of Cerebral Blood Flow and Metabolism : Official Journal of the International Society of Cerebral Blood Flow and Metabolism·Kazuhide HayakawaEng H Lo
Sep 21, 2017·International Journal of Molecular Sciences·Tim HohmannFaramarz Dehghani
Jan 26, 2021·Molecular Biology Reports·Rafael S FerreiraVictor D A da Silva

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