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Aerobic Training and Green Tea Extract Protect against N-methyl-N-nitrosourea–induced Prostate Cancer

SAEDMOCHESHI, SABER1; SAGHEBJOO, MARZIYEH1; VAHABZADEH, ZAKARIA2,3; SHEIKHOLESLAMI-VATANI, DARIUSH4

Medicine & Science in Sports & Exercise: November 2019 - Volume 51 - Issue 11 - p 2210–2216
doi: 10.1249/MSS.0000000000002054
BASIC SCIENCES
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Introduction Aerobic training and green tea extract can be used to reduce the risk of prostate cancer. The goal of this study was to evaluate the effects of 8-wk aerobic exercise training and administration of green tea extract on the level of nuclear factor kappa B (NF-kB), cyclooxygenase-2 (COX-2) and p53 tumor suppressor protein (p53) in prostate of rats which were stimulated by N-methyl-N-nitrosourea to induce the prostate cancer.

Methods Sixty adult male Wistar rats were assigned into six groups including healthy control, cancer control (CCt), cancer training (CTr: 45 min·d−1 at low to moderate intensity, five times per week, 8 wk), cancer extract (CEx: 1.34 mL of green tea extract, three times per week, 8 wk), cancer training+ cancer extract (CTr + CEx) and sham groups. Rats were sacrificed 48 h after the last intervention session, and the prostate tissue was isolated to measure the levels of NF-kB, COX-2, and p53.

Results The NF-kB level in CCt group was increased significantly compared to the healthy control (P = 0.02). In the CTr group, NF-kB level was decreased significantly compared to the CCt and CEx groups (P = 0.001 and 0.05, respectively). In addition, the levels of P53 protein were reduced in CTr, CEx, and CTr + CEx groups compared to CCt group (P = 0.001, 0.02 and 0.004, respectively). No significant changes were found in the level of COX-2 between groups.

Conclusions These results suggest that a long-term exercise training combined with the intake of green tea extract may reduce levels of NF-kB and p53 in rats with prostate cancer. Given the importance of recognizing complementary therapies in this regard, future studies are warranted.

1Department of Exercise Physiology, Faculty of Sport Sciences, University of Birjand, Birjand, IRAN

2Liver and Digestive Research Center, Kurdistan University of Medical Sciences, Sanandaj, IRAN

3Department of Clinical Biochemistry, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, IRAN

4Department of Physical Education and Sport Sciences, University of Kurdistan, Sanandaj, IRAN

Address for correspondence: Marziyeh Saghebjoo, Ph.D., University of Birjand, Avini Blvd, Birjand, South Khorasan, Iran; Mailbox number: 97175/615; E-mail: m_saghebjoo@birjand.ac.ir.

Submitted for publication January 2019.

Accepted for publication May 2019.

Online date: May 31, 2019

© 2019 American College of Sports Medicine