title: Testing drug effects against hypoxic damage of cultured neurons during long-term recovery.
abstract: Cultured neurons of chick cerebral embryo hemispheres were used to study drug effects against neuronal damage caused by hypoxia during long-term recovery. Sodium cyanide (NaCN, 1 mmol/l) induces hypoxia-like conditions by inhibiting oxydative phosphorylation. The sensitivity of the cultured neurons against this type of hypoxia was determined after 3, 4, 5 and 6 days of cultivation followed by 4, 3, 2 days and 1 day of recovery, respectively. The ATP level and the viability of cells as well as the total cell number and the protein content of the cultures were used to characterize the extent of posthypoxic neuronal damage. A hypoxic period of 30 min after 4 days of cultivation followed by 3 days of recovery seemed to be appropriate for determining protective drug effects. The drug effects obtained were comparable to those from in vivo models of cerebral ischemia or hypoxia. The results suggest that cultured neurons exposed to hypoxia and to long-term recovery could be suitable for studying post-hypoxic neuronal damage as well as neuroprotective drug effects.
authors.affiliation: Institut für Pharmakologie und Toxikologie, Philipps-Universität, Marburg, F.R.G.
authors.forename: B
authors.initials: B
authors.lastname: Ahlemeyer
authors.forename: J
authors.initials: J
authors.lastname: Krieglstein
mesh_terms: D000255:Adenosine Triphosphate / Q000032:analysis; D000818:Animals; D000927:Anticonvulsants / Q000494:pharmacology / Q000627:therapeutic use; D002545:Brain Ischemia / Q000473:pathology*; D002452:Cell Count; D002470:Cell Survival; D002478:Cells, Cultured; D002642:Chick Embryo; D002998:Clonazepam / Q000494:pharmacology / Q000627:therapeutic use; D003975:Diazepam / Q000494:pharmacology / Q000627:therapeutic use; D003986:Dibenzocycloheptenes / Q000494:pharmacology / Q000627:therapeutic use; D016291:Dizocilpine Maleate; D005444:Flunarizine / Q000494:pharmacology / Q000627:therapeutic use; D006220:Haloperidol / Q000494:pharmacology / Q000627:therapeutic use; D007099:Imipramine / Q000494:pharmacology / Q000627:therapeutic use; D007649:Ketamine / Q000494:pharmacology / Q000627:therapeutic use; D008012:Lidocaine / Q000494:pharmacology / Q000627:therapeutic use; D009257:Nafronyl / Q000494:pharmacology / Q000627:therapeutic use; D009474:Neurons / Q000187:drug effects* / Q000473:pathology; D011746:Pyrithioxin / Q000494:pharmacology / Q000627:therapeutic use; D013687:Telencephalon
chemical_list: D000927:Anticonvulsants; D003986:Dibenzocycloheptenes; D009257:Nafronyl; D002998:Clonazepam; D007649:Ketamine; D016291:Dizocilpine Maleate; D000255:Adenosine Triphosphate; D008012:Lidocaine; D011746:Pyrithioxin; D006220:Haloperidol; D007099:Imipramine; D003975:Diazepam; D005444:Flunarizine