PMID- 23895636 OWN - NLM STAT- MEDLINE DCOM- 20140331 LR - 20200914 IS - 1362-301X (Electronic) IS - 0269-9052 (Linking) VI - 27 IP - 10 DP - 2013 TI - Effect of focal mild hypothermia on expression of MMP-9, TIMP-1, Tau-1 and beta-APP in rats with cerebral ischaemia/reperfusion injury. PG - 1190-8 LID - 10.3109/02699052.2013.804206 [doi] AB - PRIMARY OBJECTIVE: Following stroke, hypothermia is reported to reduce both cellular and extracellular damage. This study aimed to examine the effects of focal mild hypothermia on proteins associated with both extracellular (matrix metalloproteinase-9 (MMP-9) and tissue inhibitor of MMP-9 (TIMP-1)) and cellular damage (Tau-1 and beta-amyloid precursor protein (beta-APP)) to characterize the protective effects of hypothermia. METHODS AND PROCEDURES: Male Wistar rats received ischaemic damage using a transient, focal ischaemia/reperfusion model. Afterwards, one group (HT) received 6 hours of focal mild hypothermia (33 degrees C) applied to the head, while another remained at normal temperature (NT). The brains were collected at 6, 12, 24, 48 and 72 hours after hypothermia to measure infarct volume ratio and to detect cells immunopositive for MMP-9, TIMP-1, Tau-1 and beta-APP, while neurological deficits were examined separately after 2 weeks. MAIN OUTCOMES AND RESULTS: Focal mild hypothermia had no effect on infarct volume ratio but expression of MMP-9, TIMP-1 Tau-1 and beta-APP was decreased. Furthermore, neurological function in the HT group was better than in the NT group. CONCLUSIONS: Focal mild hypothermia has protective effects on cerebral ischaemia-reperfusion injury characterized by decreased expression of MMP-9, TIMP-1, Tau-1 and beta-APP, along with improvement of neurological function despite no changes in infarct volume. FAU - Zhao, Jing-Kun AU - Zhao JK AD - Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Nangang District, Harbin, PR China. FAU - Guan, Fu-Lin AU - Guan FL FAU - Duan, Shu-Rong AU - Duan SR FAU - Zhao, Ji-Wei AU - Zhao JW FAU - Sun, Rui-Hong AU - Sun RH FAU - Zhang, Li-Ming AU - Zhang LM FAU - Wang, De-Sheng AU - Wang DS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130729 PL - England TA - Brain Inj JT - Brain injury JID - 8710358 RN - 0 (Amyloid beta-Protein Precursor) RN - 0 (Mapt protein, rat) RN - 0 (Peptide Fragments) RN - 0 (TIMP1 protein, rat) RN - 0 (Tissue Inhibitor of Metalloproteinase-1) RN - 0 (amyloid beta-protein precursor 770 (681-695)) RN - 0 (tau Proteins) RN - EC 3.4.24.35 (Matrix Metalloproteinase 9) RN - EC 3.4.24.35 (Mmp9 protein, rat) SB - IM MH - Amyloid beta-Protein Precursor/*metabolism MH - Analysis of Variance MH - Animals MH - Brain/*metabolism MH - Cerebral Infarction/*metabolism/pathology/*therapy MH - Down-Regulation MH - *Hypothermia, Induced MH - Immunohistochemistry MH - Male MH - Matrix Metalloproteinase 9/*metabolism MH - Peptide Fragments/*metabolism MH - Rats MH - Rats, Wistar MH - Recovery of Function MH - Reperfusion Injury/*metabolism/*therapy MH - Tissue Inhibitor of Metalloproteinase-1/*metabolism MH - tau Proteins/*metabolism EDAT- 2013/07/31 06:00 MHDA- 2014/04/01 06:00 CRDT- 2013/07/31 06:00 PHST- 2013/07/31 06:00 [entrez] PHST- 2013/07/31 06:00 [pubmed] PHST- 2014/04/01 06:00 [medline] AID - 10.3109/02699052.2013.804206 [doi] PST - ppublish SO - Brain Inj. 2013;27(10):1190-8. doi: 10.3109/02699052.2013.804206. Epub 2013 Jul 29.