title: Cellular responses to recurrent pentylenetetrazole-induced seizures in the adult zebrafish brain.
abstract: A seizure is a sustained increase in brain electrical activity that can result in loss of consciousness and injury. Understanding how the brain responds to seizures is important for development of new treatment strategies for epilepsy, a neurological condition characterized by recurrent and unprovoked seizures. Pharmacological induction of seizures in rodent models results in a myriad of cellular alterations, including inflammation, angiogenesis, and adult neurogenesis. The purpose of this study is to investigate the cellular responses to recurrent pentylenetetrazole seizures in the adult zebrafish brain. We subjected zebrafish to five once-daily pentylenetetrazole-induced seizures and characterized the cellular consequences of these seizures. In response to recurrent seizures, we found histologic evidence of vasodilatation, perivascular leukocyte egress and leukocyte proliferation suggesting seizure-induced acute CNS inflammation. We also found evidence of increased proliferation, neurogenesis, and reactive gliosis following pentylenetetrazole-induced seizures. Collectively, our results suggest that the cellular responses to seizures in the adult zebrafish brain are similar to those observed in mammalian brains.
authors.affiliation: Department of Neuroscience, The Ohio State University, Columbus, OH 43210, USA.
authors.forename: Phan Q
authors.initials: PQ
authors.lastname: Duy
authors.affiliation: Department of Molecular Genetics and Biological Chemistry and Pharmacology, The Ohio State University, Columbus, OH 43210, USA.
authors.forename: Michael A
authors.initials: MA
authors.lastname: Berberoglu
authors.affiliation: Department of Neuroscience, The Ohio State University, Columbus, OH 43210, USA. Electronic address: Christine.Beattie@osumc.edu.
authors.forename: Christine E
authors.initials: CE
authors.lastname: Beattie
authors.affiliation: Premier Health Clinical Neuroscience Institute, Boonshoft School of Medicine, Wright State University, Dayton, OH 45435, USA.
authors.forename: Charles W
authors.initials: CW
authors.lastname: Hall
mesh_terms: D000818:Animals; D001522:Behavior, Animal; D001921:Brain / Q000187:drug effects* / Q000503:physiopathology; D003292:Convulsants / Q000494:pharmacology*; D004195:Disease Models, Animal; D004827:Epilepsy / Q000139:chemically induced; D009043:Motor Activity / Q000187:drug effects / Q000502:physiology; D010433:Pentylenetetrazole / Q000494:pharmacology*; D012640:Seizures / Q000139:chemically induced / Q000503:physiopathology*; D015027:Zebrafish
chemical_list: D003292:Convulsants; D010433:Pentylenetetrazole
keywords: epilepsy; neurogenesis; seizures; zebrafish