title: Investigation of the neuroprotective impact of nimodipine on Neuro2a cells by means of a surgery-like stress model.
abstract: Nimodipine is well characterized for the management of SAH (subarachnoid hemorrhage) and has been shown to promote a better outcome and less DIND (delayed ischemic neurological deficits). In rat experiments, enhanced axonal sprouting and higher survival of motoneurons was demonstrated after cutting or crushing the facial nerve by nimodipine. These results were confirmed in clinical trials following vestibular Schwannoma surgery. The mechanism of the protective competence of nimodipine is unknown. Therefore, in this study, we established an in vitro model to examine the survival of Neuro2a cells after different stress stimuli occurring during surgery with or without nimodipine. Nimodipine significantly decreased ethanol-induced cell death of cells up to approximately 9% in all tested concentrations. Heat-induced cell death was diminished by approximately 2.5% by nimodipine. Cell death induced by mechanical treatment was reduced up to 15% by nimodipine. Our findings indicate that nimodipine rescues Neuro2a cells faintly, but significantly, from ethanol-, heat- and mechanically-induced cell death to different extents in a dosage-dependent manner. This model seems suitable for further investigation of the molecular mechanisms involved in the neuroprotective signal pathways influenced by nimodipine.
authors.affiliation: Department of Neurosurgery, Martin-Luther University of Halle-Wittenberg, Ernst-Grube-Str. 40, 06120 Halle (Saale), Germany. eva.herzfeld@uk-halle.de.
authors.forename: Eva
authors.initials: E
authors.lastname: Herzfeld
authors.affiliation: Department of Neurosurgery, Martin-Luther University of Halle-Wittenberg, Ernst-Grube-Str. 40, 06120 Halle (Saale), Germany. christian.scheller@medizin.uni-halle.de.
authors.forename: Christian
authors.initials: C
authors.lastname: Strauss
authors.affiliation: Department of Neurosurgery, Martin-Luther University of Halle-Wittenberg, Ernst-Grube-Str. 40, 06120 Halle (Saale), Germany. sebastian.simmermacher@uk-halle.de.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Simmermacher
authors.affiliation: Institute for Physiological Chemistry, Martin-Luther University of Halle-Wittenberg, Hollystr. 1, 06114 Halle (Saale), Germany. kaya.bork@medizin.uni-halle.de.
authors.forename: Kaya
authors.initials: K
authors.lastname: Bork
authors.affiliation: Institute for Physiological Chemistry, Martin-Luther University of Halle-Wittenberg, Hollystr. 1, 06114 Halle (Saale), Germany. ruediger.horstkorte@medizin.uni-halle.de.
authors.forename: Rüdiger
authors.initials: R
authors.lastname: Horstkorte
authors.affiliation: Department of Anatomy and Cell Biology, Martin-Luther University of Halle-Wittenberg, Große Steinstraße 52, 06108 Halle (Saale), Germany. faramarz.dehghani@medizin.uni-halle.de.
authors.forename: Faramarz
authors.initials: F
authors.lastname: Dehghani
authors.affiliation: Department of Neurosurgery, Martin-Luther University of Halle-Wittenberg, Ernst-Grube-Str. 40, 06120 Halle (Saale), Germany. christian.scheller@medizin.uni-halle.de.
authors.forename: Christian
authors.initials: C
authors.lastname: Scheller
mesh_terms: D000818:Animals; D016923:Cell Death / Q000187:drug effects; D002460:Cell Line; D000431:Ethanol / Q000633:toxicity; D006358:Hot Temperature; D009474:Neurons / Q000166:cytology* / Q000187:drug effects*; D018696:Neuroprotective Agents / Q000494:pharmacology*; D009553:Nimodipine / Q000494:pharmacology*; D051381:Rats; D013314:Stress, Mechanical; D013345:Subarachnoid Hemorrhage / Q000188:drug therapy
chemical_list: D018696:Neuroprotective Agents; D000431:Ethanol; D009553:Nimodipine