PMID- 23539500 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20211021 IS - 1479-6708 (Print) IS - 1748-6971 (Electronic) IS - 1479-6708 (Linking) VI - 7 IP - 3 DP - 2012 May 1 TI - Persistent region-dependent neuroinflammation, NMDA receptor loss and atrophy in an animal model of penetrating brain injury. PG - 329-339 AB - Dynamic changes in neuroinflammation and glutamate NMDA receptors (NMDAR) have been noted in traumatic and ischemic brain injury. AIM: Here we investigate the time course and regional distribution of these changes and their relationship with atrophy in a rat model of penetrating brain injury. MATERIALS METHODS: Quantitative autoradiography, with the neuroinflammation marker [(3)H]PK11195 and the NMDAR antagonist [(125)I]iodoMK801, was performed on brains of animals subjected to a unilateral wireknife injury at the level of striatum and killed 3 - 60 days later. Regional atrophy was measured by morphometry. RESULTS: The injury produced large increases in [(3)H]PK11195 binding density in cortical and septal regions adjacent to the knife track by day 7, with modest increases in the striatum. [(125)I]iodoMK801 binding was reduced in cor tical and hippocampal regions showing marked neuroinflammation, which showed marked atrophy at subsequent time points. CONCLUSION: These results indicate that neuroinflammaton and loss of NMDAR precede and predict tissue atrophy in cortical and hippocampal regions. FAU - Grossman, Rachel AU - Grossman R AD - Neurosurgery Department, Chaim Sheba Medical Center, Tel Hashomer, Israel. FAU - Paden, Charles M AU - Paden CM FAU - Fry, Pamela A AU - Fry PA FAU - Rhodes, Ryon Sun AU - Rhodes RS FAU - Biegon, Anat AU - Biegon A LA - eng GR - R01 NS050285/NS/NINDS NIH HHS/United States PT - Journal Article PL - England TA - Future Neurol JT - Future neurology JID - 101278119 PMC - PMC3607550 MID - NIHMS384445 OTO - NOTNLM OT - NMDA receptors OT - TSPO OT - brain atrophy OT - brain injury OT - neuroinflammation OT - peripheral benzodiazepine receptors EDAT- 2013/03/30 06:00 MHDA- 2013/03/30 06:01 PMCR- 2013/03/25 CRDT- 2013/03/30 06:00 PHST- 2013/03/30 06:00 [entrez] PHST- 2013/03/30 06:00 [pubmed] PHST- 2013/03/30 06:01 [medline] PHST- 2013/03/25 00:00 [pmc-release] AID - 10.2217/fnl.12.25 [doi] PST - ppublish SO - Future Neurol. 2012 May 1;7(3):329-339. doi: 10.2217/fnl.12.25.