PMID- 25139533 OWN - NLM STAT- MEDLINE DCOM- 20150811 LR - 20141216 IS - 1098-1063 (Electronic) IS - 1050-9631 (Linking) VI - 25 IP - 1 DP - 2015 Jan TI - Increased oligodendrogenesis by humanin promotes axonal remyelination and neurological recovery in hypoxic/ischemic brains. PG - 62-71 LID - 10.1002/hipo.22350 [doi] AB - Oligodendrocytes are the predominant cell type in white matter and are highly vulnerable to ischemic injury. The role of oligodendrocyte dysfunction in ischemic brain injury is unknown. In this study, we used a 24-amino acid peptide S14G-Humanin (HNG) to examine oligodendrogenesis and neurological functional recovery in a hypoxic/ischemic (H/I) neonatal model. Intraperitoneal HNG pre-treatment decreased infarct volume following H/I injury. Delayed HNG treatment 24 h after H/I injury did not reduce infarct volume but did decrease neurological deficits and brain atrophy. Delayed HNG treatment did not attenuate axonal demyelination at 48 h after H/I injury. However, at 14 d after H/I injury, delayed HNG treatment increased axonal remyelination, the thickness of corpus callosum at the midline, the number of Olig2(+) /BrdU(+) cells, and levels of brain-derived neurotrophic factor (BDNF). Our results suggest that targeting oligodendrogenesis via delayed HNG treatment may represent a promising approach for the treatment of stroke. CI - (c) 2014 Wiley Periodicals, Inc. FAU - Chen, Jing AU - Chen J AD - Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, the Second Affiliated Hospital of Soochow University, Soochow University, Suzhou City, China; The Institute of Neuroscience, Soochow University, Suzhou City, China. FAU - Sun, Miao AU - Sun M FAU - Zhang, Xia AU - Zhang X FAU - Miao, Zhigang AU - Miao Z FAU - Chua, Balvin H L AU - Chua BH FAU - Hamdy, Ronald C AU - Hamdy RC FAU - Zhang, Quan-Guang AU - Zhang QG FAU - Liu, Chun-Feng AU - Liu CF FAU - Xu, Xingshun AU - Xu X LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140910 PL - United States TA - Hippocampus JT - Hippocampus JID - 9108167 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (humanin) SB - IM MH - Animals MH - Animals, Newborn MH - Atrophy/pathology MH - Axons/drug effects/pathology MH - Brain-Derived Neurotrophic Factor/drug effects MH - Cerebral Infarction/drug therapy/pathology/physiopathology MH - Disease Models, Animal MH - Hypoxia-Ischemia, Brain/*drug therapy/pathology/physiopathology MH - Intracellular Signaling Peptides and Proteins/administration & dosage/*pharmacology MH - Neurogenesis/*drug effects MH - Oligodendroglia/*drug effects MH - Random Allocation MH - Rats MH - Rats, Sprague-Dawley MH - Recovery of Function/*drug effects OTO - NOTNLM OT - brain-derived neurotrophic factor OT - humanin OT - hypoxic/ischemic injury OT - oligodendrocyte OT - remyelination EDAT- 2014/08/21 06:00 MHDA- 2015/08/12 06:00 CRDT- 2014/08/21 06:00 PHST- 2014/08/13 00:00 [accepted] PHST- 2014/08/21 06:00 [entrez] PHST- 2014/08/21 06:00 [pubmed] PHST- 2015/08/12 06:00 [medline] AID - 10.1002/hipo.22350 [doi] PST - ppublish SO - Hippocampus. 2015 Jan;25(1):62-71. doi: 10.1002/hipo.22350. Epub 2014 Sep 10.