PMID- 37934569 OWN - NLM STAT- MEDLINE DCOM- 20231127 LR - 20231207 IS - 1945-4589 (Electronic) IS - 1945-4589 (Linking) VI - 15 IP - 21 DP - 2023 Nov 6 TI - Influences and mechanism of erythropoietin on the cognitive function of vascular dementia rats. PG - 12264-12274 LID - 10.18632/aging.205178 [doi] AB - PURPOSE: To investigate the influences and mechanism of erythropoietin (EPO) on the cognitive function of vascular dementia (VD) rats. METHODS: 1) Spatial memory capacity was assessed by Morris water maze test; 2) Pathological conditions of brain tissues were detected by hematoxylin-eosin (HE) staining; 3) The effect of treatment on apoptosis was observed by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) staining; 4) Western blotting was used to examine the protein expression in hippocampal neurons. RESULTS: The escape latency and swimming distance in the EPO group were much shorter than those in the Model group on the fifth day. In the spatial exploration test, the time spent in the target quadrant was longer, the number of platform crossings was larger and the swimming speed was higher in the Sham group and EPO group than those in the Model group. The results of HE staining showed that the cells in the hippocampal CA1 region were arranged closely in the Sham group, loosely and disorderly in the Model group but significantly better in the EPO group. Compared with that in the Model group, the number of apoptotic cells in the EPO group was obviously smaller. The results of Western blotting revealed that the expressions of EPO, p-EPOR, p-SHP2, p-TrKB, p-PI3K, p-ERK1/2 and Bcl-2 rose, while the expressions of P22, P47, Caspase-3, Caspase-9 and Bax significantly declined in the EPO group. CONCLUSIONS: EPO can effectively ameliorate the cognitive dysfunction induced by chronic hypoperfusion in VD rats by mediating oxidative stress-related pathways. FAU - Tang, Zhipeng AU - Tang Z AD - Department of Neurology, Hebei Medical University, Shijiazhuang, Hebei, China. AD - Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, China. FAU - Li, Xiuqin AU - Li X AD - Department of Geriatric Medicine, Hebei General Hospital, Shijiazhuang, Hebei, China. FAU - Yin, Nan AU - Yin N AD - Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, China. FAU - Zhao, Ming AU - Zhao M AD - Department of Laboratory, Hebei General Hospital, Shijiazhuang, Hebei, China. FAU - Hu, Qingchuan AU - Hu Q AD - Department of Laboratory, Hebei General Hospital, Shijiazhuang, Hebei, China. FAU - Lv, Peiyuan AU - Lv P AD - Department of Neurology, Hebei Medical University, Shijiazhuang, Hebei, China. AD - Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, China. AD - Department of Geriatric Medicine, Hebei General Hospital, Shijiazhuang, Hebei, China. AD - Hebei Provincial Key Laboratory of Cerebral Networks and Cognitive Disorders, Shijiazhuang, Hebei, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20231106 PL - United States TA - Aging (Albany NY) JT - Aging JID - 101508617 RN - 11096-26-7 (Erythropoietin) SB - IM MH - Rats MH - Animals MH - *Dementia, Vascular/drug therapy/metabolism MH - Rats, Sprague-Dawley MH - *Erythropoietin/pharmacology MH - Hippocampus/metabolism MH - Apoptosis MH - Cognition PMC - PMC10683607 OTO - NOTNLM OT - cell apoptosis OT - erythropoietin OT - oxidative stress OT - vascular dementia COIS- CONFLICTS OF INTEREST: The authors declare that they have no conflicts of interest. EDAT- 2023/11/07 12:47 MHDA- 2023/11/27 12:44 PMCR- 2023/11/15 CRDT- 2023/11/07 11:53 PHST- 2023/06/08 00:00 [received] PHST- 2023/10/06 00:00 [accepted] PHST- 2023/11/27 12:44 [medline] PHST- 2023/11/07 12:47 [pubmed] PHST- 2023/11/07 11:53 [entrez] PHST- 2023/11/15 00:00 [pmc-release] AID - 205178 [pii] AID - 10.18632/aging.205178 [doi] PST - ppublish SO - Aging (Albany NY). 2023 Nov 6;15(21):12264-12274. doi: 10.18632/aging.205178. Epub 2023 Nov 6.