PMID- 28561815 OWN - NLM STAT- MEDLINE DCOM- 20180516 LR - 20190610 IS - 1530-0447 (Electronic) IS - 0031-3998 (Print) IS - 0031-3998 (Linking) VI - 82 IP - 3 DP - 2017 Sep TI - Effects of therapeutic hypothermia on white matter injury from murine neonatal hypoxia-ischemia. PG - 518-526 LID - 10.1038/pr.2017.75 [doi] AB - BackgroundTherapeutic hypothermia (TH) is the standard of care for neonates with hypoxic-ischemic encephalopathy, but it is not fully protective in the clinical setting. Hypoxia-ischemia (HI) may cause white matter injury (WMI), leading to neurological and cognitive dysfunction.MethodsP9 mice were subjected to HI as previously described. Pups underwent 3.5 h of systemic hypothermia or normothermia. Cresyl violet and Perl's iron staining for histopathological scoring of brain sections was completed blindly on all brains. Immunocytochemical (ICC) staining for myelin basic protein (MBP), microglia (Iba1), and astrocytes (glia fibrillary acidic protein (GFAP)) was performed on adjacent sections. Volumetric measurements of MBP coverage were used for quantitative analysis of white matter.ResultsTH provided neuroprotection by injury scoring for the entire group (n=44; P<0.0002). ICC analysis of a subset of brains showed that the lateral caudate was protected from WMI (P<0.05). Analysis revealed decreased GFAP and Iba1 staining in hippocampal regions, mostly CA2/CA3. GFAP and Iba1 directly correlated with injury scores of normothermic brains.ConclusionTH reduced injury, and qualitative data suggest that hippocampus and lateral caudate are protected from HI. Mildly injured brains may better show the benefits of TH. Overall, these data indicate regional differences in WMI susceptibility and inflammation in a P9 murine HI model. FAU - Koo, Elliot AU - Koo E AD - Department of Pediatrics, University of California San Francisco, San Francisco, California. FAU - Sheldon, R Ann AU - Sheldon RA AD - Department of Pediatrics, University of California San Francisco, San Francisco, California. FAU - Lee, Byong Sop AU - Lee BS AD - Department of Neurology, University of Ulsan College of Medicine, Seoul, Korea. FAU - Vexler, Zinaida S AU - Vexler ZS AD - Department of Neurology, University of California San Francisco, San Francisco, California. FAU - Ferriero, Donna M AU - Ferriero DM AD - Department of Pediatrics, University of California San Francisco, San Francisco, California. LA - eng GR - P50 NS035902/NS/NINDS NIH HHS/United States GR - R01 NS033997/NS/NINDS NIH HHS/United States GR - R01 NS044025/NS/NINDS NIH HHS/United States GR - R01 NS076726/NS/NINDS NIH HHS/United States PT - Journal Article DEP - 20170531 PL - United States TA - Pediatr Res JT - Pediatric research JID - 0100714 RN - 0 (Glial Fibrillary Acidic Protein) SB - IM MH - Animals MH - Animals, Newborn MH - Female MH - Glial Fibrillary Acidic Protein/metabolism MH - *Hypothermia, Induced MH - Hypoxia-Ischemia, Brain/metabolism/pathology/*therapy MH - Male MH - Mice MH - White Matter/metabolism/*pathology PMC - PMC5570671 MID - NIHMS859417 EDAT- 2017/06/01 06:00 MHDA- 2018/05/17 06:00 PMCR- 2017/11/30 CRDT- 2017/06/01 06:00 PHST- 2016/10/10 00:00 [received] PHST- 2017/03/06 00:00 [accepted] PHST- 2017/06/01 06:00 [pubmed] PHST- 2018/05/17 06:00 [medline] PHST- 2017/06/01 06:00 [entrez] PHST- 2017/11/30 00:00 [pmc-release] AID - pr201775 [pii] AID - 10.1038/pr.2017.75 [doi] PST - ppublish SO - Pediatr Res. 2017 Sep;82(3):518-526. doi: 10.1038/pr.2017.75. Epub 2017 May 31.