Other Publications (1)
Articles by Soohyun Wi in JoVE
Neurobehavioral Assessments in a Mouse Model of Neonatal Hypoxic-ischemic Brain Injury MinGi Kim1,2, Ji Hea Yu1, Jung Hwa Seo1,2, Yoon-Kyum Shin1,2, Soohyun Wi1,2, Ahreum Baek1,3, Suk-Young Song1,5, Sung-Rae Cho1,2,4,5 1Department and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, 2Brain Korea 21 PLUS Project for Medical Science, Yonsei University, 3Department of Rehabilitation Medicine, Yonsei University Wonju College of Medicine, 4Rehabilitation Institute of Neuromuscular Disease, Yonsei University College of Medicine, 5Graduate Program of NanoScience and Technology, Yonsei University We performed unilateral carotid artery occlusion on postnatal day 7-10 CD-1 mouse pups to create a neonatal hypoxic-ischemic (HI) model and investigated the effects of HI brain injury. We studied neurobehavioral functions in these mice compared to non-operated normal mice.
Other articles by Soohyun Wi on PubMed
In Vivo Expression of Reprogramming Factors Increases Hippocampal Neurogenesis and Synaptic Plasticity in Chronic Hypoxic-Ischemic Brain Injury Neural Plasticity. | Pubmed ID: 27900211 Neurogenesis and synaptic plasticity can be stimulated in vivo in the brain. In this study, we hypothesized that in vivo expression of reprogramming factors such as Klf4, Sox2, Oct4, and c-Myc would facilitate endogenous neurogenesis and functional recovery. CD-1® mice were induced at 1 week of age by unilaterally carotid artery ligation and exposure to hypoxia. At 6 weeks of age, mice were injected GFP only or both four reprogramming factors and GFP into lateral ventricle. Passive avoidance task and open field test were performed to evaluate neurobehavioral function. Neurogenesis and synaptic activity in the hippocampus were evaluated using immunohistochemistry, qRT-PCR, and/or western blot analyses. Whereas BrdU(+)GFAP(+) cells in the subgranular zone of the hippocampus were not significantly different, the numbers of BrdU(+)βIII-tubulin(+) and BrdU(+)NeuN(+) cells were significantly higher in treatment group than control group. Expressions of synaptophysin and PSD-95 were also higher in treatment group than control group. Importantly, passive avoidance task and open field test showed improvement in long-term memory and decreased anxiety in treatment group. In conclusion, in vivo expression of reprogramming factors improved behavioral functions in chronic hypoxic-ischemic brain injury. The mechanisms underlying these repair processes included endogenous neurogenesis and synaptic plasticity in the hippocampus.