Treadmill exercise increases cell proliferation without altering of apoptosis in dentate gyrus of Sprague-Dawley rats

Shin Ho Kim, Hyun Bae Kim, Mi Hyeon Jang, Baek Vin Lim, Youn Jung Kim, Young Pyo Kim, Sung Soo Kim, Ee Hwa Kim, Chang Ju Kim

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58 Scopus citations

Abstract

The effects of forced treadmill exercise on cell proliferation and apoptosis in the hippocampal dentate gyrus in Sprague-Dawley rats were investigated. The animals were classified into three groups: the control group, the easy exercise group, and the moderate exercise group. In the control group, rats were left on the treadmill without running for 30 min per day, while rats in the exercise groups were made to run on the treadmill for the same duration. All rats were injected intraperitoneally with 5-bromo-2′-deoxyuridine (BrdU) one-hour prior to exercise once a day for 7 consecutive days beginning at the start of the exercise regimens. Each of the rats was sacrificed 2 h after the last exercise. Both the easy and moderate exercise groups revealed increased number of BrdU-positive cells in the dentate gyrus compared to the control group. The terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) assay revealed very few apoptotic cells, with no statistically significant differences among the groups. These results showed that treadmill exercise increases cell proliferation without altering of apoptosis in the dentate gyrus of the hippocampus.

Original languageEnglish (US)
Pages (from-to)1331-1340
Number of pages10
JournalLife Sciences
Volume71
Issue number11
DOIs
StatePublished - Aug 2 2002

Keywords

  • Apoptosis
  • Cell proliferation
  • Dentate gyrus
  • Treadmill exercise

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Pharmacology, Toxicology and Pharmaceutics(all)

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    Kim, S. H., Kim, H. B., Jang, M. H., Lim, B. V., Kim, Y. J., Kim, Y. P., Kim, S. S., Kim, E. H., & Kim, C. J. (2002). Treadmill exercise increases cell proliferation without altering of apoptosis in dentate gyrus of Sprague-Dawley rats. Life Sciences, 71(11), 1331-1340. https://doi.org/10.1016/S0024-3205(02)01849-0