PMID- 24631672 OWN - NLM STAT- MEDLINE DCOM- 20141212 LR - 20140505 IS - 1873-7544 (Electronic) IS - 0306-4522 (Linking) VI - 268 DP - 2014 May 30 TI - Ceftriaxone alleviates early brain injury after subarachnoid hemorrhage by increasing excitatory amino acid transporter 2 expression via the PI3K/Akt/NF-kappaB signaling pathway. PG - 21-32 LID - S0306-4522(14)00207-3 [pii] LID - 10.1016/j.neuroscience.2014.02.053 [doi] AB - Early brain injury (EBI) after subarachnoid hemorrhage (SAH) is characterized by a reduction in excitatory amino acid transporter 2 (EAAT2) expression and severe amino acid excitotoxicity. The aim of this study was to explore the neuroprotective effect of ceftriaxone (CEF), a potent compound that up-regulates EAAT2, against EBI and the potential mechanisms using in vitro experiments and a rat model of SAH. Intracisternal treatment with CEF significantly improved neurological outcomes and alleviated extracellular glutamate accumulation after SAH. Terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling assay (TUNEL) staining and Western blot analysis of cleaved caspase 3 showed that CEF decreased hippocampal neuronal apoptosis following SAH. Immunofluorescent staining and Western blotting revealed that CEF significantly reversed the down-regulation of EAAT2 expression following SAH. In Morris water maze (MWM) tests, CEF remarkably ameliorated the SAH-induced cognitive dysfunction in spatial learning memory and reference memory. CEF promoted the nuclear translocation of p65 as well as the activation of Akt in hippocampal astrocytes in vitro and in vivo. These findings suggest that CEF may exert significant protective effects against EBI following SAH by modulating the PI3K/Akt/NF-kappaB signaling pathway. CI - Copyright (c) 2014 IBRO. Published by Elsevier Ltd. All rights reserved. FAU - Feng, D AU - Feng D AD - Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China. FAU - Wang, W AU - Wang W AD - Department of Anesthesiology, School of Stomatology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China. FAU - Dong, Y AU - Dong Y AD - Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China; Department of Neurosurgery, 463rd Hospital of PLA, Shenyang 110042, Liaoning Province, China. FAU - Wu, L AU - Wu L AD - Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China. FAU - Huang, J AU - Huang J AD - Department of Anatomy, Histology and Embryology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China. FAU - Ma, Y AU - Ma Y AD - Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China. FAU - Zhang, Z AU - Zhang Z AD - Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China. FAU - Wu, S AU - Wu S AD - Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China. FAU - Gao, G AU - Gao G AD - Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China. Electronic address: guodonggao2013@163.com. FAU - Qin, H AU - Qin H AD - Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China. Electronic address: huaizhouqin@163.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140312 PL - United States TA - Neuroscience JT - Neuroscience JID - 7605074 RN - 0 (Excitatory Amino Acid Transporter 2) RN - 0 (NF-kappa B) RN - 0 (Neoplasm Proteins) RN - 0 (Neuroprotective Agents) RN - 0 (Nucleocytoplasmic Transport Proteins) RN - 0 (Slc1a2 protein, rat) RN - 0 (p65 oncofetal mRNA transport protein, rat) RN - 3KX376GY7L (Glutamic Acid) RN - 75J73V1629 (Ceftriaxone) RN - EC 2.7.1.- (Phosphatidylinositol 3-Kinases) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 3.4.22.- (Casp3 protein, rat) RN - EC 3.4.22.- (Caspase 3) SB - IM MH - Animals MH - Apoptosis/drug effects/physiology MH - Astrocytes/drug effects/physiology MH - Brain Injuries/*drug therapy/etiology/mortality/physiopathology MH - Caspase 3/metabolism MH - Ceftriaxone/*pharmacology MH - Cells, Cultured MH - Cognition Disorders/drug therapy/etiology/physiopathology MH - Disease Models, Animal MH - Excitatory Amino Acid Transporter 2/*metabolism MH - Glutamic Acid/metabolism MH - Hippocampus/drug effects/physiopathology MH - Male MH - NF-kappa B/metabolism MH - Neoplasm Proteins/metabolism MH - Neurons/physiology MH - Neuroprotective Agents/*pharmacology MH - Nucleocytoplasmic Transport Proteins/metabolism MH - Phosphatidylinositol 3-Kinases/metabolism MH - Proto-Oncogene Proteins c-akt/metabolism MH - Rats, Sprague-Dawley MH - Signal Transduction/drug effects MH - Subarachnoid Hemorrhage/*complications/drug therapy/mortality/physiopathology OTO - NOTNLM OT - apoptosis OT - ceftriaxone OT - early brain injury OT - excitatory amino acid transporter 2 OT - subarachnoid hemorrhage EDAT- 2014/03/19 06:00 MHDA- 2014/12/17 06:00 CRDT- 2014/03/18 06:00 PHST- 2013/11/07 00:00 [received] PHST- 2014/02/25 00:00 [revised] PHST- 2014/02/26 00:00 [accepted] PHST- 2014/03/18 06:00 [entrez] PHST- 2014/03/19 06:00 [pubmed] PHST- 2014/12/17 06:00 [medline] AID - S0306-4522(14)00207-3 [pii] AID - 10.1016/j.neuroscience.2014.02.053 [doi] PST - ppublish SO - Neuroscience. 2014 May 30;268:21-32. doi: 10.1016/j.neuroscience.2014.02.053. Epub 2014 Mar 12.