Comparison of Neurogenesis in the Dentate Gyrus Between the Adult and Aged Gerbil Following Transient Global Cerebral Ischemia

被引：0
作者：
Jung Hoon Choi
Ki-Yeon Yoo
Choong Hyun Lee
Joon Ha Park
Bing Chun Yan
Seung-Hae Kwon
Jeong Yeol Seo
Jun Hwi Cho
In Koo Hwang
Moo-Ho Won
机构：
[1] Kangwon National University,Department of Anatomy, College of Veterinary Medicine
[2] Gangneung-Wonju National University,Department of Oral Anatomy, College of Dentistry
[3] Dankook University,Department of Anatomy and Physiology, College of Pharmacy
[4] Kangwon National University,Department of Neurobiology, School of Medicine
[5] Korea Basic Science Institute,Division of Analytical Bio
[6] Hallym University,imaging, Chuncheon Center
[7] Kangwon National University,Department of Emergency Medicine, Chuncheon Sacred Heart Hospital, College of Medicine
[8] Kangwon National University,Department of Emergency Medicine, Kangwon National University Hospital, School of Medicine
[9] Seoul National University,Institute of Medical Sciences, School of Medicine
来源：
Neurochemical Research | 2012年 / 37卷
关键词：
Aged brain; Hippocampus; Neurogenesis; Cell proliferation; Neuroblast differentiation;
D O I：
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学科分类号：
摘要：
In the present study, we compared differences in cell proliferation, neuroblast differentiation and neuronal maturation in the hippocampal dentate gyrus (DG) between the adult and aged gerbil induced by 5 min of transient global cerebral ischemia using Ki-67 and BrdU (markers for cell proliferation), doublecortin (DCX, a marker for neuroblast differentiation) and neuronal nuclei (NeuN, a marker for mature neuron). The number of Ki-67-immunoreactive (+) cells in the DG of both the groups peaked 7 days after ischemia/reperfusion (I/R). However, the number in the aged DG was 40.6 ± 1.8% of that in the adult DG. Thereafter, the number decreased with time. After ischemic damage, DCX immunoreactivity and its protein level in the adult and aged DG peaked at 10 and 15 days post-ischemia, respectively. However, DCX immunoreactivity and its protein levels in the aged DG were much lower than those in the adult. DCX immunoreactivity and its protein level in the aged DG were 11.1 ± 0.6% and 34.4 ± 2.1% of the adult DG, respectively. In addition, the number of Ki-67+ cells and DCX immunoreactivity in both groups were similar to those in the sham at 60 days postischemia. At 30 days post-ischemia, the number of BrdU+ cells and BrdU+/NeuN+ cells in the adult-group were much higher (281.2 ± 23.4% and 126.4 ± 7.4%, respectively) than the aged-group (35.6 ± 6.8% and 79.5 ± 6.1%, respectively). These results suggest that the ability of neurogenesis in the ischemic aged DG is much lower than that in the ischemic adult DG.
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页码：802 / 810
页数：8
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