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Original Research

Open Access


  • Bang sub Lee1
  • Wi-Young So1
  • Sang-Hoon Kim2
  • Jin-Ho Yoon3

1Sports and Health Care Major, College of Humanities and Arts, Korea National University of Transportation, Chungju-si 27469, Republic of Korea.

2Korea Athletic Training Research Institute, Seoul 05392, Republic of Korea

3Department of Sport and Leisure Studies, Far East University, Chungbuk 27601, Republic of Korea.

DOI: 10.22374/1875-6859.13.2.4 Vol.13,Issue 2,September 2017 pp.25-33

Published: 28 September 2017

*Corresponding Author(s): Jin-Ho Yoon E-mail:


Background and Objective

Cytochrome P450s (CYPs) are the major drug-metabolizing enzymes responsible for the clearance of approximately 75% of all drugs in clinical use. Drug clearance may be reduced with aging, resulting in increased drug toxicity in the elderly. Here, we evaluated changes in CYP expression following exercise in an aging rat model.

Materials and Methods

Sixteen male Sprague-Dawley rats were grouped into control (n = 5), short-term exercise (SE) (n = 4), and long-term exercise (LE) (n = 7) groups and changes in CYPs and nuclear receptors (NRs) were measured with aging.


CYP2C22, CYP3A1, and CYP2C11 mRNAs were up-regulated, whereas CYP26B1 was downregulated in the SE and LE groups compared with the control group. Moreover, mRNA levels of the NRs, constitu-tive androstane receptor, retinoid X receptor α, peroxisome proliferator-activated receptor, and pregnane X receptor, were significantly increased in the LE group compared with those in the control group. As an indicator of more long-term changes, protein levels of CYP2C11, CYP2B, CYP1A, CYP2C, and CYP2C22 were significantly up-regulated in the LE group compared with the control group. Overall, our data show that CYP and NR expression increased in rats with forced long-term exercise during aging.


Therefore, we propose that regular swimming exercise may increase CYP levels, resulting in enhanced drug clearance and thereby reducing age-related drug toxicity in elderly individuals.


aging, cytochrome P450s, exercise, nuclear receptors, rat, swimming

Cite and Share

Bang sub Lee,Wi-Young So,Sang-Hoon Kim,Jin-Ho Yoon. EXPRESSION PROFILES OF CYTOCHROME P450S FOLLOWING SWIMMING EXERCISE IN AGING RATS. Journal of Men's Health. 2017. 13(2);25-33.


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