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Genetically Modified (GM) foods are among the most important achievements of biotechnology. Given the safety importance of transgenic rice, this study was conducted to investigate the effect of GM rice consumption on serum concentrations of tumor markers in rats. In this experimental intervention, we used the blood serum samples from the Biobank taken from 60 males and 60 female Sprague-Dawley (SD) rats fed on three different diets, including rat’s standard food, non-GM rice, and GM rice after 90 day. Tumor markers including Carcinogenic embryonic antigen (CEA), Alpha-Fito protein (AFP), Cancer Antigen 19-9 (CA19-9), Cancer Antigen 125 (CA125), and Cancer Antigen15-3 (CA15-3) were assessed by enzyme-linked immune sorbent assay (ELISA) method. Statistical analysis was conducted via SPSS software. The results show that the concentrations of tumor markers were within the normal range in the SD rats treated with diet, and since the concentration of tumor markers was lower than the acceptable index determined, according to the kit standard in both groups, no obvious carcinogenic effect was found. However, these findings are not enough to make a final decision regarding the safety assessment of GM rice consumption.

Relationship between Serum Tumor-Related Markers and Genetically Modified Rice Expressing Cry1Ab Protein in Sprague-Dawley Rats