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Open AccessArticle

Effects of 90-Day Feeding of Transgenic Maize BT799 on the Reproductive System in Male Wistar Rats

by Qian-ying Guo 1,2,3,†, Li-xia He 1,3,†, Han Zhu 1,3, Jun-li Shang 1,3, Ling-yan Zhu 1,3, Jun-bo Wang 1,3,* and Yong Li 1,3,*
1
Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
2
Peking University People’s Hospital, Beijing 100044, China
3
Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Paul B. Tchounwou
Int. J. Environ. Res. Public Health 2015, 12(12), 15309-15320; https://doi.org/10.3390/ijerph121214986
Received: 16 September 2015 / Revised: 14 October 2015 / Accepted: 20 November 2015 / Published: 2 December 2015
BT799 is a genetically modified (GM) maize plant that expresses the Cry1Ac gene from Bacillus thuringiensis (Bt). The Cry1Ac gene was introduced into maize line Zhen58 to encode the Bt crystal protein and thus produce insect-resistant maize BT799. Expression of Bt protein in planta confers resistance to Lepidopteran pests and corn rootworms. The present study was designed to investigate any potential effects of BT799 on the reproductive system of male rats and evaluate the nutritional value of diets containing BT799 maize grain in a 90-day subchronic rodent feeding study. Male Wistar rats were fed with diets containing BT799 maize flours or made from its near isogenic control (Zhen58) at a concentration of 84.7%, nutritionally equal to the standard AIN-93G diet. Another blank control group of male rats were treated with commercial AIN-93G diet. No significant differences in body weight, hematology and serum chemistry results were observed between rats fed with the diets containing transgenic BT799, Zhen58 and the control in this 13-week feeding study. Results of serum hormone levels, sperm parameters and relative organ/body weights indicated no treatment-related side effects on the reproductive system of male rats. In addition, no diet-related changes were found in necropsy and histopathology examinations. Based on results of the current study, we did not find any differences in the parameters tested in our study of the reproductive system of male rats between BT799 and Zhen58 or the control. View Full-Text
Keywords: transgenic maize; BT799; Bacillus thuringiensis; reproductive toxicity; sperm parameters transgenic maize; BT799; Bacillus thuringiensis; reproductive toxicity; sperm parameters
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Guo, Q.-Y.; He, L.-X.; Zhu, H.; Shang, J.-L.; Zhu, L.-Y.; Wang, J.-B.; Li, Y. Effects of 90-Day Feeding of Transgenic Maize BT799 on the Reproductive System in Male Wistar Rats. Int. J. Environ. Res. Public Health 2015, 12, 15309-15320.

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