Investigating the Effect of Endurance Training on Tumor Level of IL-8 and Serum Level of IL-17 in Female Mice with Breast Cancer

Background & Objectives: Breast cancer is nowadays one of the most harmful threats to women's health. However, exercise training plays an adjuvant role in breast cancer (Adjuvant also means preventive. So, no need to repeat preventing.). Therefore, the aim of this study is to investigate the effect of 6-week endurance training on the levels ofinterleukin-8 in the tumor and Interleukin-17 in the serum of mice suffering from breast cancer. Materials & Methods: In this study, 20 female Balb/C mice were randomly divided into exercise-tumor (RET) and rest-tumor (RRT) groups. The mice were oriented in the environment, and one million estrogen-dependent breast cancer cells (MC4L2) were injected into the top of the right thigh of each mouse. Subsequently, the RET group performed the endurance exercise 5 days per week for 6 weeks. The tumor volume was measured by a digital caliper each week. Finally, the mice were sacrificed, and the tumor tissue was removed and kept in -70°C. Then, ELISA method was performed and the data were collected. Results: After 6 weeks of training, a significant decrease was observed in the RTE group in the serum level of IL-17 and IL-8 protein in tumor (P< 0.05). These results were consistent with the tumor growth rate. Conclusion: The findings of the present study indicate that endurance training can reduce IL-8 and IL-17 proteins in the tumor and serum of mice ill with breast cancer. Therefore, the physical activity is utilized as an important factor in the improvement of adjutant therapy along with other therapeutic methods to treat breast cancer.