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Yonsei medical journal v.51 no.5, 2010년, pp.661 - 671   SCIE
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Acute Stress and Chronic Stress Change Brain-Derived Neurotrophic Factor (BDNF) and Tyrosine Kinase-Coupled Receptor (TrkB) Expression in Both Young and Aged Rat Hippocampus

Shi, Shou-Sen    (Department of Medical Psychology, Institute of Biochemistry and Molecular Biology, Binzhou Medical College, Yantai, Shandong, China.   ); Shao, Shu-hong    (Department of Medical Psychology, Institute of Biochemistry and Molecular Biology, Binzhou Medical College, Yantai, Shandong, China.   ); Yuan, Bang-ping    (Gaomi People's Hospital, Weifang, Shandong, China.   ); Pan, Fang    (Department of Medical Psychology, Shandong University Medical School, Jinan, Shandong, China.   ); Li, Zun-Ling    (Institute of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, Shandong, China.  );
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    Purpose The purpose of this study is to explore the dynamic change of brain-derived neurotrophic factor (BDNF) mRNA, protein, and tyrosine kinase-coupled receptor (TrkB) mRNA of the rat hippocampus under different stress conditions and to explore the influence of senescence on the productions expression. Materials and Methods By using forced-swimming in 4℃ cold ice water and 25℃ warm water, young and aged male rats were randomly divided into acute stress (AS) and chronic mild repeated stress (CMRS) subgroups, respectively. BDNF productions and TrkB mRNA in the hippocampus were detected by using Western-blotting and reverse transcription-polymerase chain reaction (RT-PCR), separately, at 15, 30, 60, 180, and 720 min after the last stress session. Results The short AS induced a significant increase in BDNF mRNA and protein in both age groups, but the changes in the young group were substantially greater than those of the aged group ( p Conclusion The results indicated that the up/down-regulation of BDNF and TrkB were affected by aging and the stimulus paradigm, which might reflect important mechanisms by which the hippocampus copes with stressful stimuli.


  • 주제어

    BDNF .   chronic stress .   senescence .   behavior .   plasma corticosterone.  

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