PMID- 30416654 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200930 IS - 1943-8141 (Print) IS - 1943-8141 (Electronic) IS - 1943-8141 (Linking) VI - 10 IP - 10 DP - 2018 TI - Olfactory ensheathing cells transplantation attenuates chronic cerebral hypoperfusion induced cognitive dysfunction and brain damages by activating Nrf2/HO-1 signaling pathway. PG - 3111-3121 AB - Chronic cerebral hypoperfusion (CCH) has become a crucial factor contributing to neurological disorders and cognitive deficits. Olfactory ensheathing cells (OECs) transplantation has been widely used to repair central nerve systems (CNS) injury, however, whether this intervention has therapeutic effects on CCH-induced cognitive dysfunction and brain damages is still unknown. In this study, we sought to determine the potential therapeutic effects of OECs transplantation on CCH. Two days after the establishment of 2VO rat model, OECs or its medium transplantation were performed via intrastriatal injection. In our study, OECs treatment significantly improved learning and memory in 2VO rats. Transplantation of OECs also significantly reduced brain cell death, neuroinflammation and oxidative stress. Mechanistically, transplantation of OECs increased the expression of nuclear factor-like 2 (Nrf2) and hemeoxygenase 1 (HO-1). Finally, treatment with Brusatol, a Nrf2 inhibitor, markedly abolished the neuroprotective effects of OECs on cognitive decline, oxidative stress, Nrf2 and HO-1 expression. These results demonstrated that OECs transplantation protected CCH-induced cognitive impairment and brain injury by suppressing neuroinflammation and oxidative stress. The activation of Nrf2/HO-1 signaling pathway may contribute to the neuroprotection of OECs transplantation in CCH. FAU - Yu, Ailing AU - Yu A AD - Shandong University School of Medicine, Department of Neurology, Taian City Central Hospital Taian 271000, Shandong, China. FAU - Mao, Leilei AU - Mao L AD - The Institute of Life Sciences Research Center, Taishan Medical College Taian 271000, Shandong, China. FAU - Zhao, Fangfang AU - Zhao F AD - Shandong University School of Medicine, Department of Neurology, Taian City Central Hospital Taian 271000, Shandong, China. FAU - Sun, Baoliang AU - Sun B AD - Key Laboratory of Cerebral Microcirculation in Universities of Shandong, Department of Neurology, Affiliated Hospital of Taishan Medical College Taian 271000, Shandong, China. LA - eng PT - Journal Article DEP - 20181015 PL - United States TA - Am J Transl Res JT - American journal of translational research JID - 101493030 PMC - PMC6220231 OTO - NOTNLM OT - Chronic cerebral hypoperfusion OT - Nrf2/HO-1 pathway OT - OECs transplantation COIS- None. EDAT- 2018/11/13 06:00 MHDA- 2018/11/13 06:01 PMCR- 2018/10/15 CRDT- 2018/11/13 06:00 PHST- 2018/04/11 00:00 [received] PHST- 2018/08/04 00:00 [accepted] PHST- 2018/11/13 06:00 [entrez] PHST- 2018/11/13 06:00 [pubmed] PHST- 2018/11/13 06:01 [medline] PHST- 2018/10/15 00:00 [pmc-release] PST - epublish SO - Am J Transl Res. 2018 Oct 15;10(10):3111-3121. eCollection 2018.