Document Type

Journal Article

Publication Title

Medicine & Science in Sports & Exercise

Publisher

Wolters Kluwer

School

School of Medical and Health Sciences / Exercise Medicine Research Institute / Centre for Exercise and Sports Science Research / Centre for Precision Health

RAS ID

40568

Funders

Edith Cowan University - Open Access Support Scheme 2021

National Health and Medical Research Council

Australian Government Research Training Program Scholarship

Comments

Kim, J. S., Wilson, R. L., Taaffe, D. R., Galvão, D. A., Gray, E., & Newton, R. U. (2022). Myokine expression and tumor-suppressive effect of serum following 12 weeks of exercise in prostate cancer patients on ADT. Medicine & Science in Sports & Exercise, 54(2), 197-205. https://doi.org/10.1249/MSS.0000000000002783

Abstract

Purpose:

Although several mechanisms have been proposed for the tumor-suppressive effect of exercise, little attention has been given to myokines, even though skeletal muscle is heavily recruited during exercise resulting in myokine surges. We measured resting serum myokine levels before and after an exercise-based intervention and the effect of this serum on prostate cancer cell growth.

Methods:

Ten prostate cancer patients undertaking androgen deprivation therapy (age, 73.3 ± 5.6 yr) undertook a 12-wk exercise-based intervention including supervised resistance training, self-directed aerobic exercise, and protein supplementation. Body composition was assessed by dual-energy x-ray absorptiometry and muscle strength by the one-repetition maximum method. Fasting blood was collected at baseline and postintervention, and serum levels of myokines—secreted protein acidic and rich in cysteine, oncostatin M (OSM), decorin, insulin-like growth factor-1, and insulin-like growth factor binding protein-3 (IGFBP-3)—were measured. The growth of the prostate cancer cell line DU145 with baseline and postintervention serum was measured.

Results:

Body weight (P = 0.011), fat mass (P = 0.012), and percent body fat (P = 0.033) were reduced, whereas percent lean mass (P = 0.001) increased, as did strength (leg press, P = 0.006; chest press, P = 0.020) across the intervention. Serum OSM levels (P = 0.020) and relative serum OSM levels (P = 0.020) increased compared with baseline. A significant reduction in DU145 Cell Index (P = 0.012) and growth rate (P = 0.012) was observed after applying postintervention serum compared with baseline serum.

Conclusion:

This study provides evidence for enhanced myokine expression and tumor-suppressive effects of serum from chronically exercise-trained prostate cancer patients on androgen deprivation therapy.

DOI

10.1249/MSS.0000000000002783

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Research Themes

Health

Priority Areas

Exercise, nutrition, lifestyle and other interventions for optimal health across the lifespan

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