Neurotrophic factors and growth factors are known to have positive effects on hippocampal proliferation. However, previous findings on the effects of these factors on exercise-induced hippocampal proliferation are inconsistent. In this study, we investigated the effects of voluntary running on hippocampal proliferation and the expression levels of nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), and insulin-like growth factor 1 (IGF-1) in hippocampus. Twenty-four male C57BL/6 mice were randomly divided into four groups: control groups 1 and 2 (C1, n = 6; C2, n = 6) and running groups 1 and 2 (R1, n = 6; R2, n = 6). Mice from C1 and C2 were placed individually in standard cages for eight weeks; mice from R1 and R2 were housed individually in cages with a running wheel for eight weeks. At the fifth week, C1 and R1 mice were injected with BrdU for 7 consecutive days. On the first day of the ninth week, the C1 and R1 mice were anaesthetized and hippocampal neuronal proliferation was assessed using immunohistochemistry; the mice in C2 and R2 were sacrificed to test the expression levels of NGF, BDNF, and IGF-1 mRNA in hippocampus using RT-PCR. The results indicated that voluntary running significantly increased the number of BrdU-positive cells in the dentate gyrus (DG), and significantly upregulated the levels of NGF, BDNF, and IGF-1 mRNA in the hippocampus. In conclusion, our findings indicated that hippocampal proliferation was enhanced by voluntary running, which was associated with increased NGF, BDNF, and IGF-1 mRNA levels in the hippocampus.
Published in | Advances in Biochemistry (Volume 5, Issue 1) |
DOI | 10.11648/j.ab.20170501.11 |
Page(s) | 1-6 |
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2017. Published by Science Publishing Group |
Voluntary Exercise, Hippocampal Proliferation, NGF, BDNF, IGF-1
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APA Style
Bo Xu, Xianliang Zhang, Chenghui Song, Fei Liang, Li Zhang. (2017). Voluntary Running Enhances Hippocampal Proliferation by Increasing Hippocampal NGF, BDNF, and IGF-1. Advances in Biochemistry, 5(1), 1-6. https://doi.org/10.11648/j.ab.20170501.11
ACS Style
Bo Xu; Xianliang Zhang; Chenghui Song; Fei Liang; Li Zhang. Voluntary Running Enhances Hippocampal Proliferation by Increasing Hippocampal NGF, BDNF, and IGF-1. Adv. Biochem. 2017, 5(1), 1-6. doi: 10.11648/j.ab.20170501.11
AMA Style
Bo Xu, Xianliang Zhang, Chenghui Song, Fei Liang, Li Zhang. Voluntary Running Enhances Hippocampal Proliferation by Increasing Hippocampal NGF, BDNF, and IGF-1. Adv Biochem. 2017;5(1):1-6. doi: 10.11648/j.ab.20170501.11
@article{10.11648/j.ab.20170501.11, author = {Bo Xu and Xianliang Zhang and Chenghui Song and Fei Liang and Li Zhang}, title = {Voluntary Running Enhances Hippocampal Proliferation by Increasing Hippocampal NGF, BDNF, and IGF-1}, journal = {Advances in Biochemistry}, volume = {5}, number = {1}, pages = {1-6}, doi = {10.11648/j.ab.20170501.11}, url = {https://doi.org/10.11648/j.ab.20170501.11}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ab.20170501.11}, abstract = {Neurotrophic factors and growth factors are known to have positive effects on hippocampal proliferation. However, previous findings on the effects of these factors on exercise-induced hippocampal proliferation are inconsistent. In this study, we investigated the effects of voluntary running on hippocampal proliferation and the expression levels of nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), and insulin-like growth factor 1 (IGF-1) in hippocampus. Twenty-four male C57BL/6 mice were randomly divided into four groups: control groups 1 and 2 (C1, n = 6; C2, n = 6) and running groups 1 and 2 (R1, n = 6; R2, n = 6). Mice from C1 and C2 were placed individually in standard cages for eight weeks; mice from R1 and R2 were housed individually in cages with a running wheel for eight weeks. At the fifth week, C1 and R1 mice were injected with BrdU for 7 consecutive days. On the first day of the ninth week, the C1 and R1 mice were anaesthetized and hippocampal neuronal proliferation was assessed using immunohistochemistry; the mice in C2 and R2 were sacrificed to test the expression levels of NGF, BDNF, and IGF-1 mRNA in hippocampus using RT-PCR. The results indicated that voluntary running significantly increased the number of BrdU-positive cells in the dentate gyrus (DG), and significantly upregulated the levels of NGF, BDNF, and IGF-1 mRNA in the hippocampus. In conclusion, our findings indicated that hippocampal proliferation was enhanced by voluntary running, which was associated with increased NGF, BDNF, and IGF-1 mRNA levels in the hippocampus.}, year = {2017} }
TY - JOUR T1 - Voluntary Running Enhances Hippocampal Proliferation by Increasing Hippocampal NGF, BDNF, and IGF-1 AU - Bo Xu AU - Xianliang Zhang AU - Chenghui Song AU - Fei Liang AU - Li Zhang Y1 - 2017/03/04 PY - 2017 N1 - https://doi.org/10.11648/j.ab.20170501.11 DO - 10.11648/j.ab.20170501.11 T2 - Advances in Biochemistry JF - Advances in Biochemistry JO - Advances in Biochemistry SP - 1 EP - 6 PB - Science Publishing Group SN - 2329-0862 UR - https://doi.org/10.11648/j.ab.20170501.11 AB - Neurotrophic factors and growth factors are known to have positive effects on hippocampal proliferation. However, previous findings on the effects of these factors on exercise-induced hippocampal proliferation are inconsistent. In this study, we investigated the effects of voluntary running on hippocampal proliferation and the expression levels of nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), and insulin-like growth factor 1 (IGF-1) in hippocampus. Twenty-four male C57BL/6 mice were randomly divided into four groups: control groups 1 and 2 (C1, n = 6; C2, n = 6) and running groups 1 and 2 (R1, n = 6; R2, n = 6). Mice from C1 and C2 were placed individually in standard cages for eight weeks; mice from R1 and R2 were housed individually in cages with a running wheel for eight weeks. At the fifth week, C1 and R1 mice were injected with BrdU for 7 consecutive days. On the first day of the ninth week, the C1 and R1 mice were anaesthetized and hippocampal neuronal proliferation was assessed using immunohistochemistry; the mice in C2 and R2 were sacrificed to test the expression levels of NGF, BDNF, and IGF-1 mRNA in hippocampus using RT-PCR. The results indicated that voluntary running significantly increased the number of BrdU-positive cells in the dentate gyrus (DG), and significantly upregulated the levels of NGF, BDNF, and IGF-1 mRNA in the hippocampus. In conclusion, our findings indicated that hippocampal proliferation was enhanced by voluntary running, which was associated with increased NGF, BDNF, and IGF-1 mRNA levels in the hippocampus. VL - 5 IS - 1 ER -