PMID- 26500490 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20151027 LR - 20201001 IS - 1662-5102 (Print) IS - 1662-5102 (Electronic) IS - 1662-5102 (Linking) VI - 9 DP - 2015 TI - Dendritic morphology, synaptic transmission, and activity of mature granule cells born following pilocarpine-induced status epilepticus in the rat. PG - 384 LID - 10.3389/fncel.2015.00384 [doi] LID - 384 AB - To understand the potential role of enhanced hippocampal neurogenesis after pilocarpine-induced status epilepticus (SE) in the development of epilepsy, we quantitatively analyzed the geometry of apical dendrites, synaptic transmission, and activation levels of normotopically distributed mature newborn granule cells in the rat. SE in male Sprague-Dawley rats (between 6 and 7 weeks old) lasting for more than 2 h was induced by an intraperitoneal injection of pilocarpine. The complexity, spine density, miniature post-synaptic currents, and activity-regulated cytoskeleton-associated protein (Arc) expression of granule cells born 5 days after SE were studied between 10 and 17 weeks after CAG-GFP retroviral vector-mediated labeling. Mature granule cells born after SE had dendritic complexity similar to that of granule cells born naturally, but with denser mushroom-like spines in dendritic segments located in the outer molecular layer. Miniature inhibitory post-synaptic currents (mIPSCs) were similar between the controls and rats subjected to SE; however, smaller miniature excitatory post-synaptic current (mEPSC) amplitude with a trend toward less frequent was found in mature granule cells born after SE. After maturation, granule cells born after SE did not show denser Arc expression in the resting condition or 2 h after being activated by pentylenetetrazol-induced transient seizure activity than vicinal GFP-unlabeled granule cells. Thus our results suggest that normotopic granule cells born after pilocarpine-induced SE are no more active when mature than age-matched, naturally born granule cells. FAU - Gao, Fei AU - Gao F AD - Department of Physiology, Shandong University School of Medicine Jinan, China. FAU - Song, Xueying AU - Song X AD - Department of Physiology, Shandong University School of Medicine Jinan, China. FAU - Zhu, Dexiao AU - Zhu D AD - Department of Physiology, Shandong University School of Medicine Jinan, China. FAU - Wang, Xiaochen AU - Wang X AD - Department of Physiology, Shandong University School of Medicine Jinan, China. FAU - Hao, Aijun AU - Hao A AD - Department of Histology and Embryology, Shandong University School of Medicine Jinan, China. FAU - Nadler, J Victor AU - Nadler JV AD - Departments of Pharmacology and Neurobiology, Duke University Medical Center Durham, NC, USA. FAU - Zhan, Ren-Zhi AU - Zhan RZ AD - Department of Physiology, Shandong University School of Medicine Jinan, China. LA - eng PT - Journal Article DEP - 20151007 PL - Switzerland TA - Front Cell Neurosci JT - Frontiers in cellular neuroscience JID - 101477935 PMC - PMC4596052 OTO - NOTNLM OT - Sholl analysis OT - activity-regulated cytoskeleton-associated protein OT - dendritic spine OT - epilepsy OT - neurogenesis OT - retroviral vector EDAT- 2015/10/27 06:00 MHDA- 2015/10/27 06:01 PMCR- 2015/01/01 CRDT- 2015/10/27 06:00 PHST- 2015/03/07 00:00 [received] PHST- 2015/09/14 00:00 [accepted] PHST- 2015/10/27 06:00 [entrez] PHST- 2015/10/27 06:00 [pubmed] PHST- 2015/10/27 06:01 [medline] PHST- 2015/01/01 00:00 [pmc-release] AID - 10.3389/fncel.2015.00384 [doi] PST - epublish SO - Front Cell Neurosci. 2015 Oct 7;9:384. doi: 10.3389/fncel.2015.00384. eCollection 2015.