ARTICLE INFO

Article Type

Original Research

Authors

Mojtahedi‎   F. (1)
Pooladi   A. (2)
Sirati‎   F. (3)
Kaihani‎   E. (1)
Akhlaghpour‎   Sh. (4)
Karimlou   M. (5)
Bagherizadeh‎   I. (6)
Fallah‎   M. (1)
Ghasemi Firouzabadi ‎   S. (1)
Behjati‎   F. (*)






(*) Genetic Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
(1) ‎Genetic Research Center‎, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
(2) ‎“Sarem Fertility & Infertility Research Center (SAFIR)” and “Sarem Cell Research Center (SCRC)”‎, Sarem Women’s Hospital, Tehran, Iran
(3) ‎Surgery Department‎, Medicine Faculty, Tehran University of Medical Sciences‎, Tehran, Iran
(4) Navid Medical Center, Tehran, Iran
(5) ‎Statistics Department‎, Medicine Faculty‎, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
(6) ‎“Sarem Cell Research Center (SCRC)” and “Medical Genetics Department”, Tehran, Iran

Correspondence


Article History

Received:   May  15, 2016
Accepted:   June 25, 2016
ePublished:   August 15, 2017

ABSTRACT

Aims The use of non-invasive laboratory tests based on detection of biomarkers in the ‎blood samples is a good strategy for early diagnosis of breast cancer. The ‎lymphocyte radiosensitivity assessment can be a valuable method to diagnose ‎breast cancer. The objective of this study was to investigate the radiosensitivity ‎indices in sporadic breast cancer among Iranian women and to evaluate the ‎potential of those indices for clinical use in early diagnosis of breast cancer and ‎assessing its susceptibility.‎
Materials & Methods The present study is a case-control that was conducted on 32 patients with ‎sporadic breast cancer (patient group) and 30 healthy individuals (control group). ‎The obtained blood samples of both groups were exposed to gamma-irradiation ‎‎(0.4 Gy) and the level of chromosome breakage was determined based on the G2 ‎chromosome breakage assay protocol. In the metaphase lymphocytes, the ‎percentage of the abnormal cells was calculated as the radiosensitivity index for ‎comparing the two groups. Data were analyzed by SPSS 19 software using student ‎t-test, paired t-test, chi-square and Fisher exact test.‎
Findings There was a significant difference in the percentage of the index of the abnormal ‎cells after irradiation between two groups (p=0.001). The area under the curve ‎‎(AUC) of the percentage of the abnormal cells and odds ratio (OR) were found as ‎‎0.725 with 3.818, respectively. The frequency of increased radiosensitivity based ‎on this index (at 61% cut-off point), was 65.6% in the patients and about 33% in ‎the control group.‎
Conclusion The increased level of chromosome breakage following irradiation with gamma ‎rays can be used as an early diagnostic biomarker of breast cancer or a possible ‎indicator for breast cancer susceptibility.‎


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