PMID- 18981663 OWN - NLM STAT- MEDLINE DCOM- 20090108 LR - 20190606 IS - 0916-7250 (Print) IS - 0916-7250 (Linking) VI - 70 IP - 10 DP - 2008 Oct TI - Impaired expression of excitatory amino acid transporter 2 (EAAT2) and glutamate homeostasis in canine necrotizing meningoencephalitis. PG - 1071-5 AB - To clarify the involvement of excitatory and inhibitory amino acids in canine necrotizing meningoencephalitis (NME), glutamate, aspartate, taurine and gamma-aminobutylic acid (GABA) were determined in the cerebrospinal fluids (CSF) from eight NME cases and ten healthy controls. NME dogs exhibited significantly higher concentrations of glutamate and aspartate than those in controls (p<0.001 and p<0.001, respectively), while there was no difference in taurine or GABA between the two groups. When fetal canine astrocytes were cultured for 24 hr in the presence of NME-CSF, supernatant concentrations of glutamate, aspartate and taurine were significantly elevated. Simultaneously, expression of excitatory amino acid transporter 2 (EAAT2) mRNA was significantly reduced in the astrocytes without change in EAAT1 mRNA. Hence, reduced expression of EAAT2 and impaired glutamate homeostasis may contribute to the pathogenesis of NME. FAU - Pham, Ngoc-Thi AU - Pham NT AD - Laboratory of Veterinary Clinical Pathobiology, Department of Veterinary Medical Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan. FAU - Matsuki, Naoaki AU - Matsuki N FAU - Shibuya, Masahiro AU - Shibuya M FAU - Tamahara, Satoshi AU - Tamahara S FAU - Ono, Kenichiro AU - Ono K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Japan TA - J Vet Med Sci JT - The Journal of veterinary medical science JID - 9105360 RN - 0 (Excitatory Amino Acid Transporter 1) RN - 0 (Excitatory Amino Acid Transporter 2) RN - 0 (RNA, Messenger) RN - 0 (Tumor Necrosis Factor-alpha) RN - 1EQV5MLY3D (Taurine) RN - 30KYC7MIAI (Aspartic Acid) RN - 3KX376GY7L (Glutamic Acid) RN - 56-12-2 (gamma-Aminobutyric Acid) SB - IM MH - Animals MH - Aspartic Acid/metabolism MH - Astrocytes/chemistry/metabolism MH - Dog Diseases/cerebrospinal fluid/*metabolism MH - Dogs MH - Excitatory Amino Acid Transporter 1/biosynthesis/genetics MH - Excitatory Amino Acid Transporter 2/*biosynthesis/genetics MH - Female MH - Glutamic Acid/*metabolism MH - Leukoencephalitis, Acute Hemorrhagic/cerebrospinal fluid/metabolism/*veterinary MH - Male MH - RNA, Messenger/biosynthesis/genetics MH - Reverse Transcriptase Polymerase Chain Reaction/veterinary MH - Taurine/metabolism MH - Tumor Necrosis Factor-alpha/cerebrospinal fluid MH - gamma-Aminobutyric Acid/metabolism EDAT- 2008/11/05 09:00 MHDA- 2009/01/09 09:00 CRDT- 2008/11/05 09:00 PHST- 2008/11/05 09:00 [pubmed] PHST- 2009/01/09 09:00 [medline] PHST- 2008/11/05 09:00 [entrez] AID - JST.JSTAGE/jvms/70.1071 [pii] AID - 10.1292/jvms.70.1071 [doi] PST - ppublish SO - J Vet Med Sci. 2008 Oct;70(10):1071-5. doi: 10.1292/jvms.70.1071.