Preliminary Results of the Effects of Localized High-Dose Radiotherapy Combined with Total Body Low-Dose Irradiation on Tumor Growth and Stimulating the Immune System in Tumor-Bearing Mice | ||
| Journal of Biomedical Physics and Engineering | ||
| مقاله 4، دوره 13، شماره 4، آبان 2023، صفحه 323-332 اصل مقاله (1009.63 K) | ||
| نوع مقاله: Original Research | ||
| شناسه دیجیتال (DOI): 10.31661/jbpe.v0i0.2009-1179 | ||
| نویسندگان | ||
| Mohammad Taghi Bahrayni Toosi1؛ Afsaneh Kasiri2؛ Sepehr Torabinejad3؛ Shokouhozaman Soleymanifard* 1؛ Mojtaba Sankian4؛ Seyed Amir Aledavood5؛ Fazileh Hosseini Shamili4؛ Fahimeh Lavi4 | ||
| 1Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran | ||
| 2Department of Medical Physics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran | ||
| 3Department of Genetics, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran | ||
| 4Immunology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran | ||
| 5Cancer Research Center, Mashhad University of Medical Sciences, Mashhad, Iran | ||
| چکیده | ||
| Background: The immune system plays an extensive role in eliminating tumor cells. On the other hand, low-dose irradiation stimulates the immune system. Objective: The present study aimed to investigate the therapeutic outcomes of localized high-dose radiotherapy (LH) alone and combined with total body low-dose irradiation (TB). Material and Methods: In this experimental study, B16F0 tumor cells were injected into the right flank of C57JL/6 mice. The mice were treated with LH alone (13 Gy X-rays to the tumor surface) (LH group) or combined with TB (85 mGy X-rays at the skin) (TB+LH group). Then the tumor volume, the mice’s lifespan, the number of lymphocytes extracted from the spleen, and interferon gamma (IFN-γ) production were measured. Results: Reduced number of lymphocytes, compared to non-irradiated mice (control group), was observed in LH and TB+LH groups. However, the identical number of cultured lymphocytes produced a higher level of IFN-γ in irradiated groups. Comparing the irradiated groups, the number of lymphocytes and their IFN-γ production, tumor growth control, and the mice’s lifespan were statistically higher in TB+LH group. Conclusion: Observing a higher level of IFN-γ in TB+LH group compared to LH group indicates that low-dose radiation enhanced the stimulating effects of high-dose radiation on the immune system. It caused the mice in TB+LH group to have a more prolonged lifespan and a lower tumor growth rate. Therefore, it is worth our attention for future studies to investigate whether total body low-dose irradiation can be utilized before radiotherapy to enhance its efficiency. | ||
تازه های تحقیق | ||
Mohammad Taghi Bahrayni Toosi (Google Scholar) Shokouhozaman Soleymanifard (Google Scholar) | ||
| کلیدواژهها | ||
| Immune System؛ Radiotherapy؛ Whole-Body Irradiation؛ IFN-γ | ||
| مراجع | ||
|
| ||
|
آمار تعداد مشاهده مقاله: 26,752 تعداد دریافت فایل اصل مقاله: 33,387 |
||