Effect of Genetically Modified Rice on Some Intestinal Microbial Flora in Rats

Authors

  • Fallahzadeh, Hossein Professor, Department of Biostatistics and Epidemiology, Faculty of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  • Ahmadian, Salman MSc in Parasitology, Research Center for Food Hygiene and Safety, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  • Askari, Vahideh MSc in Immunology, Research Center for Food Hygiene and Safety, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  • Barzegar-bafroui, Raziyeh MSc in Food Hygiene and Safety, Research Center for Food Hygiene and Safety, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  • Eslami, Gilda Associate Professor, Department of Parasitology and Mycology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  • Hajimohammadi, Bahador Associate Professor, Research Center for Food Hygiene and Safety, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  • Hosseini, Saeedeh Sadat MSc in Medical Microbiology, Research Center for Food Hygiene and Safety, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  • Loni, Elahe MSc in Food Hygiene and Safety, Research Center for Food Hygiene and Safety, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  • Sheykhzadegan, Maryam MSc in Medical Microbiology, Research Center for Food Hygiene and Safety, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  • Shirdeli, Mehrnoosh MSc in Food Hygiene and Safety, Research Center for Food Hygiene and Safety, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  • Vakili, Mahmoud Associate Professor, Department of Community and Preventive Medicine, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  • Zandi, Hengameh Associate Professor, Department of Microbiology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
Abstract:

 Background and purpose: Transgenic rice is a type of rice that its genetic sequence has been changed to improve its quantity and quality. Bt (Bacillus thuringiensis) transgenic rice expresses Cry1Ab protein and is named Tarom Molaii. There are no studies on the effect of this type of transgenic rice on gastrointestinal health in Iran, so, this study investigated the effect of Tarom Molaii transgenic rice on common microbial flora of rat intestine. Materials and methods: In this experimental study, 24 Sprague Dawley (SD) rats received transgenic and non-transgenic rice in their diets for 90 days and were compared with the control group that received standard rat diet. The number of Escherichia coli, Bifidobacterium, Lactobacillus, and Enterococcus bacteria and the total number of aerobic and anaerobic bacteria in fecal samples were examined in jejunum, ileum, and duodenum samples on days 60, 90, and after killing the rats. Results: The study showed that except for the total number of anaerobic bacteria in the stool sample on day 90, there was no significant relationship between the study groups and the number of bacteria (P>0.05). There was an increase in the number of intestinal Lactobacillus in the transgenic rice-fed group and a decrease in the number of anaerobic bacteria in the transgenic rice-fed group compared with the control group and the non-transgenic rice-fed group. Conclusion: Consumption of transgenic rice in current study had no considerable effect on the number of common bacteria in the intestinal normal flora. But, long-term studies are needed in other laboratory animals.  

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Journal title

volume 32  issue 211

pages  13- 24

publication date 2022-08

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