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Article

Protective effects of sodium selenite supplementation against irradiation-induced damage in non-cancerous human esophageal cells

  • Authors:
    • Irma M. Puspitasari
    • Chiho Yamazaki
    • Rizky Abdulah
    • Mirasari Putri
    • Satomi Kameo
    • Takashi Nakano
    • Hiroshi Koyama
  • View Affiliations / Copyright

    Affiliations: Department of Public Health, Gunma University Graduate School of Medicine, Maebashi, Gunma 371‑8511, Japan, Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Bandung, West Java 45363, Indonesia, Department of Radiation Oncology, Gunma University Graduate School of Medicine, Maebashi, Gunma 371‑8511, Japan
  • Pages: 449-454
    |
    Published online on: November 24, 2016
       https://doi.org/10.3892/ol.2016.5434
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Abstract

The administration of radioprotective compounds is one approach to preventing radiation damage in non-cancerous tissues. Therefore, radioprotective compounds are crucial in clinical radiotherapy. Selenium is a radioprotective compound that has been used in previous clinical studies of radiotherapy. However, evidence regarding the effectiveness of selenium in radiotherapy and the mechanisms underlying the selenium‑induced reduction of the side effects of radiotherapy remains insufficient. To further investigate the effectiveness of selenium in radiotherapy, the present study examined the protective effects of sodium selenite supplementation administered prior to X-ray radiation treatment in CHEK-1 non-cancerous human esophageal cells. Sodium selenite supplementation increased glutathione peroxidase 1 (GPx-1) activity in a dose‑ and time-dependent manner. The sodium selenite dose that induced the highest GPx-1 activity was determined to be 50 nM for 72 h prior to radiotherapy. The half-maximal inhibitory concentration of sodium selenite in CHEK-1 cells was 3.6 µM. Sodium selenite supplementation increased the survival rate of the cells in a dose‑dependent manner and enhanced the degree of cell viability at 72 h post‑irradiation (P<0.05). Combined treatment with 50 nM sodium selenite and 2 gray (Gy) X‑ray irradiation decreased the number of sub‑G1 cells from 5.9 to 4.2% (P<0.05) and increased the proportion of G1 cells from 58.8 to 62.1%, compared with 2 Gy X-ray irradiation alone; however, this difference was not statistically significant (P=1.00). Western blot analysis revealed that treatment with 2 Gy X-ray irradiation significantly increased the expression levels of cleaved poly (ADP‑ribose) polymerase (PARP; P<0.05). In addition, combined treatment with 50 nM sodium selenite and 2 Gy X‑ray irradiation reduced the expression levels of cleaved PARP protein, compared with 2 Gy X-ray irradiation alone; however, this reduction was not statistically significant (P=0.423). These results suggest that 50 nM sodium selenite supplementation administered for 72 h prior to irradiation may protect CHEK-1 cells from irradiation-induced damage by inhibiting irradiation‑induced apoptosis. Therefore, sodium selenite is a potential radioprotective compound for non‑cancerous cells in clinical radiotherapy.
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Copy and paste a formatted citation
Spandidos Publications style
Puspitasari IM, Yamazaki C, Abdulah R, Putri M, Kameo S, Nakano T and Koyama H: Protective effects of sodium selenite supplementation against irradiation-induced damage in non-cancerous human esophageal cells. Oncol Lett 13: 449-454, 2017.
APA
Puspitasari, I.M., Yamazaki, C., Abdulah, R., Putri, M., Kameo, S., Nakano, T., & Koyama, H. (2017). Protective effects of sodium selenite supplementation against irradiation-induced damage in non-cancerous human esophageal cells. Oncology Letters, 13, 449-454. https://doi.org/10.3892/ol.2016.5434
MLA
Puspitasari, I. M., Yamazaki, C., Abdulah, R., Putri, M., Kameo, S., Nakano, T., Koyama, H."Protective effects of sodium selenite supplementation against irradiation-induced damage in non-cancerous human esophageal cells". Oncology Letters 13.1 (2017): 449-454.
Chicago
Puspitasari, I. M., Yamazaki, C., Abdulah, R., Putri, M., Kameo, S., Nakano, T., Koyama, H."Protective effects of sodium selenite supplementation against irradiation-induced damage in non-cancerous human esophageal cells". Oncology Letters 13, no. 1 (2017): 449-454. https://doi.org/10.3892/ol.2016.5434
Copy and paste a formatted citation
x
Spandidos Publications style
Puspitasari IM, Yamazaki C, Abdulah R, Putri M, Kameo S, Nakano T and Koyama H: Protective effects of sodium selenite supplementation against irradiation-induced damage in non-cancerous human esophageal cells. Oncol Lett 13: 449-454, 2017.
APA
Puspitasari, I.M., Yamazaki, C., Abdulah, R., Putri, M., Kameo, S., Nakano, T., & Koyama, H. (2017). Protective effects of sodium selenite supplementation against irradiation-induced damage in non-cancerous human esophageal cells. Oncology Letters, 13, 449-454. https://doi.org/10.3892/ol.2016.5434
MLA
Puspitasari, I. M., Yamazaki, C., Abdulah, R., Putri, M., Kameo, S., Nakano, T., Koyama, H."Protective effects of sodium selenite supplementation against irradiation-induced damage in non-cancerous human esophageal cells". Oncology Letters 13.1 (2017): 449-454.
Chicago
Puspitasari, I. M., Yamazaki, C., Abdulah, R., Putri, M., Kameo, S., Nakano, T., Koyama, H."Protective effects of sodium selenite supplementation against irradiation-induced damage in non-cancerous human esophageal cells". Oncology Letters 13, no. 1 (2017): 449-454. https://doi.org/10.3892/ol.2016.5434
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