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Salisu IB, Shahid AA, Yaqoob A, Gul A, Rao AQ. Evaluation the effect of subchronic feeding of transgenic cotton line (CKC1) on the faecal microbiota of albino rabbits. J Anim Physiol Anim Nutr (Berl) 2020; 105:354-363. [PMID: 33381881 DOI: 10.1111/jpn.13471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/06/2020] [Accepted: 10/08/2020] [Indexed: 12/30/2022]
Abstract
Recent studies have demonstrated a strong relationship between the intestinal microbiota and the host health. As such, consumers are increasingly becoming more concerned about the potential effect of certain foods/feeds, particularly of transgenic origin on the gut microbiota. Although the European Food Safety Authority has recommended in their guidelines, to study the effect of transgenic food/feed on host-microbiota, yet, few studies have focused on the evaluation of such effects mainly due to culturing difficulties. Therefore, this study was intended to evaluate the potential adverse effects of transgenic diet consumption on some specific gut microflora (Lactobacillus group, Bifidobacterium genus, Escherichia coli subgroup and Enterococcus genus) of rabbits. A total of forty-eight rabbits were randomly assigned into four groups and fed a diet containing a variable proportion of transgenic cottonseeds at 0, 20, 30 and 40% inclusion level, respectively. Changes in the specific or total faecal bacterial population were monitored at five different experimental stages (i.e. 0, 45, 90, 135 and 180 days) using both the traditional plate count method (TM) and quantitative real-time PCR (qPCR). No significant differences (p > .05) were observed concerning numbers of specific bacteria or total bacteria between the control and experimental groups, though qPCR showed numerically higher values in terms of 16S rRNA gene copies as compared to the values obtained from TM. However, such numerical differences were biologically insignificant (p > .05). Similarly, no significant variations were noticed in the calculated B/E (log10 copies of Bifidobacterium per g faces/log10 copies of E. coli genome per g faeces) ratios in all the groups. All the ratios were in the range of 1.24 to 1.30 throughout the experiment, indicating a good balance of intestinal microflora and greater resistance to intestinal disorders. It is therefore concluded that feeding transgenic cottonseeds could not adversely affect the gut microflora of rabbits during a long-term study.
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Affiliation(s)
- Ibrahim Bala Salisu
- Department of Animal Science, Faculty of Agriculture, Federal University Dutse, Dutse, Nigeria.,Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Ahmad Ali Shahid
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Amina Yaqoob
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Ambreen Gul
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Abdul Qayyum Rao
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
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2
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Tang X, Wang Y, Pei L, Yang W, Fan J, Zhuo Q, Yang X, Yu Z, Jia X, Liu J, Fan B. Chronic toxicity study in Sprague-Dawley rats on transgenic rice T1c-19 with cry1C* gene. Food Chem Toxicol 2020; 140:111324. [PMID: 32283201 DOI: 10.1016/j.fct.2020.111324] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 04/03/2020] [Accepted: 04/04/2020] [Indexed: 01/17/2023]
Abstract
In the present study, a novel transgenic rice line T1c-19 carrying cry1C* gene was evaluated in Sprague-Dawley (SD) rats by a 52-week feeding study, aiming at determining its unintended effects. The rice T1c-19 and its parental rice were prepared at a level of up to 60.75% in the growth diet and 66.75% in the maintenance diet, respectively. AIN-93 diet was used as a nutritional control. All the diets were nutritionally balanced. Each group, with 48 rats of both genders, was fed the corresponding diet for 52 weeks. The results of clinical signs, body weight and food consumption of the transgenic rice group were comparable to those of the parental rice group. Clinical measurements were made on weeks 13, 26 and 52, and statistical significances were observed in several hematological and serum biochemical indices between the two rice groups and were not considered as treatment-related. The terminal histopathological examination showed some spontaneous lesions in all groups with no significant difference among them. Taken together, the results of the present 52-week chronic toxicity study of transgenic rice T1c-19 exerted no unintended adverse effects on SD rats.
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Affiliation(s)
- Xiaoqiao Tang
- Hubei Provincial Key Laboratory for Applied Toxicology, Hubei Provincial Center for Disease Control and Prevention, Wuhan, 430079, China
| | - Yangfeng Wang
- Hubei Provincial Key Laboratory for Applied Toxicology, Hubei Provincial Center for Disease Control and Prevention, Wuhan, 430079, China; Fuling District Center for Disease Control and Prevention, Chongqing, 408000, China
| | - Lanjie Pei
- Hubei Provincial Key Laboratory for Applied Toxicology, Hubei Provincial Center for Disease Control and Prevention, Wuhan, 430079, China
| | - Wenxiang Yang
- Hubei Provincial Key Laboratory for Applied Toxicology, Hubei Provincial Center for Disease Control and Prevention, Wuhan, 430079, China
| | - Jun Fan
- Hubei Provincial Key Laboratory for Applied Toxicology, Hubei Provincial Center for Disease Control and Prevention, Wuhan, 430079, China
| | - Qin Zhuo
- Key Laboratory of Trace Element Nutrition of National Health Commission(NHC), National Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing, 100050, China.
| | - Xiaoguang Yang
- Key Laboratory of Trace Element Nutrition of National Health Commission(NHC), National Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Zhou Yu
- Key Laboratory of Food Safety Risk Assessment of Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, 100021, China
| | - Xudong Jia
- Key Laboratory of Food Safety Risk Assessment of Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, 100021, China.
| | - Jiafa Liu
- Hubei Provincial Key Laboratory for Applied Toxicology, Hubei Provincial Center for Disease Control and Prevention, Wuhan, 430079, China
| | - Bolin Fan
- Hubei Provincial Key Laboratory for Applied Toxicology, Hubei Provincial Center for Disease Control and Prevention, Wuhan, 430079, China.
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High-throughput Sequencing-based Analysis of the Intestinal Microbiota of Broiler Chickens Fed Genetically Modified Rice Expressing Cry1Ac/Cry1Ab Chimeric Bacillus thuringiensis Protein. J Poult Sci 2018; 55:10-16. [PMID: 32055151 PMCID: PMC6756379 DOI: 10.2141/jpsa.0170029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 05/13/2017] [Indexed: 11/21/2022] Open
Abstract
Many types of Bacillus thuringiensis (Bt)-crops are being grown worldwide, triggering concerns about their potential impact on humans and livestock. To ensure better yield and food safety in China, an attempt has been made to develop Bt-rice targeting a broad range of insects. We aimed to investigate whether feeding genetically modified rice expressing the Bt chimeric Cry1Ac/Cry1Ab protein has any effects on the intestinal microbiota of broilers. Broilers were fed either Bt-rice or its unmodified isogenic parent line for 42 days, and total DNA was isolated from cecum contents for high-throughput sequencing of the 16S rRNA gene. In total, 1,241,005 reads, assigned to 12 phyla, 31 families, and 48 genera were generated. No significant differences were observed in the relative abundance of organisms identified among the major phyla, families, and genera, except for two less abundant families, Thermoanaerobacteraceae and Peptostreptococcaceae, and two less abundant genera, Anaerotruncus and Gelria. The results were in agreement with those from culture-based analysis and Biolog EcoPlates. These results illustrate that feeding Bt-rice has no adverse effects on the broiler intestinal microbiota and provide sufficient support for the food safety of Bt-rice.
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Qi X, Xu W, Guo M, Chen S, Liu Y, He X, Huang K. Rice- or pork-based diets with similar calorie and content result in different rat gut microbiota. Int J Food Sci Nutr 2017; 68:829-839. [PMID: 28320221 DOI: 10.1080/09637486.2017.1301889] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Rice is the most important food crop, and pork is the most widely eaten meat in the world. In this study, we compared the gut microbiota of the rats fed with rice or pork mixed diets, which have similar caloric contents. The physiological indices (body weights, hematology, serum chemistry, organ weights and histopathology) of two groups were all within the normal range. Two diets did not induce difference in the diversity of gut bacteria. However, Firmicutes were significantly higher in rice diet group, while Bacteroidetes were enriched in pork diet group. Butyrate and the bacteria enzymes β-glucuronidase, β-glucosidase and nitroreductase in the feces were all drastically higher in pork diet group. This study indicates that different diets with similar calorie and nutritional composition could change the community structure but not the diversity of rat fecal microbiota.
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Affiliation(s)
- Xiaozhe Qi
- a Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering , China Agricultural University , Beijing , China
| | - Wentao Xu
- a Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering , China Agricultural University , Beijing , China.,b Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering , China Agricultural University , Beijing , China
| | - Mingzhang Guo
- b Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering , China Agricultural University , Beijing , China
| | - Siyuan Chen
- b Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering , China Agricultural University , Beijing , China
| | - Yifei Liu
- a Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering , China Agricultural University , Beijing , China
| | - Xiaoyun He
- a Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering , China Agricultural University , Beijing , China
| | - Kunlun Huang
- a Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering , China Agricultural University , Beijing , China.,b Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering , China Agricultural University , Beijing , China
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Wang F, Dang C, Chang X, Tian J, Lu Z, Chen Y, Ye G. Variation among conventional cultivars could be used as a criterion for environmental safety assessment of Bt rice on nontarget arthropods. Sci Rep 2017; 7:41918. [PMID: 28167821 PMCID: PMC5294568 DOI: 10.1038/srep41918] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Accepted: 12/28/2016] [Indexed: 11/09/2022] Open
Abstract
The current difficulty facing risk evaluations of Bacillus thuringiensis (Bt) crops on nontarget arthropods (NTAs) is the lack of criteria for determining what represents unacceptable risk. In this study, we investigated the biological parameters in the laboratory and field population abundance of Nilaparvata lugens (Hemiptera: Delphacidae) on two Bt rice lines and the non-Bt parent, together with 14 other conventional rice cultivars. Significant difference were found in nymphal duration and fecundity of N. lugens fed on Bt rice KMD2, as well as field population density on 12 October, compared with non-Bt parent. However, compared with the variation among conventional rice cultivars, the variation of each parameter between Bt rice and the non-Bt parent was much smaller, which can be easily seen from low-high bar graphs and also the coefficient of variation value (C.V). The variation among conventional cultivars is proposed to be used as a criterion for the safety assessment of Bt rice on NTAs, particularly when statistically significant differences in several parameters are found between Bt rice and its non-Bt parent. Coefficient of variation is suggested as a promising parameter for ecological risk judgement of IRGM rice on NTAs.
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Affiliation(s)
- Fang Wang
- State Key Laboratory of Rice Biology, Ministry of Agriculture Key Laboratory of Agricultural Entomology, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China
| | - Cong Dang
- State Key Laboratory of Rice Biology, Ministry of Agriculture Key Laboratory of Agricultural Entomology, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xuefei Chang
- State Key Laboratory of Rice Biology, Ministry of Agriculture Key Laboratory of Agricultural Entomology, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China
| | - Junce Tian
- State Key Laboratory of Rice Biology, Ministry of Agriculture Key Laboratory of Agricultural Entomology, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China.,Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Zengbin Lu
- State Key Laboratory of Rice Biology, Ministry of Agriculture Key Laboratory of Agricultural Entomology, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China.,Institute of Plant Protection, Shandong Academy of Agricultural Science, Jinan 250100, China
| | - Yang Chen
- State Key Laboratory of Rice Biology, Ministry of Agriculture Key Laboratory of Agricultural Entomology, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China.,Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Gongyin Ye
- State Key Laboratory of Rice Biology, Ministry of Agriculture Key Laboratory of Agricultural Entomology, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China
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Tan X, Zhou X, Tang Y, Lv J, Zhang L, Sun L, Yang Y, Miao Y, Jiang H, Chen G, Huang Z, Wang X. Immunotoxicological Evaluation of Genetically Modified Rice Expressing Cry1Ab/Ac Protein (TT51-1) by a 6-Month Feeding Study on Cynomolgus Monkeys. PLoS One 2016; 11:e0163879. [PMID: 27684490 PMCID: PMC5042482 DOI: 10.1371/journal.pone.0163879] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 09/15/2016] [Indexed: 01/19/2023] Open
Abstract
The present study was performed to evaluate the food safety of TT51-1, a new type of genetically modified rice that expresses the Cry1Ab/Ac protein (Bt toxin) and is highly resistant to most lepidopteran pests. Sixteen male and 16 female cynomolgus monkeys were randomly divided into four groups: conventional rice (non-genetically modified rice, non-GM rice), positive control, 17.5% genetically modified rice (GM rice) and 70% GM rice. Monkeys in the non-GM rice, positive control, and GM rice groups were fed on diets containing 70% non-GM rice, 17.5% GM rice or 70% GM rice, respectively, for 182 days, whereas animals in the positive group were intravenously injected with cyclophosphamide every other day for a total of four injections before the last treatment. Six months of treatment did not yield abnormal observations. Specifically, the following parameters did not significantly differ between the non-GM rice group and GM rice groups: body weight, food consumption, electrocardiogram, hematology, immuno-phenotyping of lymphocytes in the peripheral blood, mitogen-induced peripheral blood lymphocyte proliferation, splenocyte proliferation, KLH-T cell-dependent antibody response, organ weights and ratios, and histological appearance (p>0.05). Animals from the GM rice group differed from animals in the non-GM rice group (p<0.05) in several parameters: specifically, their body temperatures and serum alanine aminotransferase (ALT) levels were higher, whereas their levels of serum K+, Cl- and cytokines (IL-2, IL-4 and IL-5) were lower. Because dose- or time-dependent changes were not observed in this study and animals appeared histologically normal, the aforementioned differences were not considered to be adverse or related to the treatment with GM rice. In conclusion, a 6-month feeding study of TT51-1 did not show adverse immunotoxicological effects on cynomolgus monkeys.
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Affiliation(s)
- Xiaoyan Tan
- Key Laboratory of Beijing for Safety Evaluation of Drugs, National Center for Safety Evaluation of Drugs, National Institutes for Food and Drug Control, Beijing, People’s Republic of China
- Center of Safety Evaluation on New Drug, School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou, Guangdong Province, People’s Republic of China
| | - Xiaobing Zhou
- Key Laboratory of Beijing for Safety Evaluation of Drugs, National Center for Safety Evaluation of Drugs, National Institutes for Food and Drug Control, Beijing, People’s Republic of China
| | - Yao Tang
- Key Laboratory of Beijing for Safety Evaluation of Drugs, National Center for Safety Evaluation of Drugs, National Institutes for Food and Drug Control, Beijing, People’s Republic of China
| | - Jianjun Lv
- Key Laboratory of Beijing for Safety Evaluation of Drugs, National Center for Safety Evaluation of Drugs, National Institutes for Food and Drug Control, Beijing, People’s Republic of China
| | - Lin Zhang
- Key Laboratory of Beijing for Safety Evaluation of Drugs, National Center for Safety Evaluation of Drugs, National Institutes for Food and Drug Control, Beijing, People’s Republic of China
| | - Li Sun
- Key Laboratory of Beijing for Safety Evaluation of Drugs, National Center for Safety Evaluation of Drugs, National Institutes for Food and Drug Control, Beijing, People’s Republic of China
| | - Yanwei Yang
- Key Laboratory of Beijing for Safety Evaluation of Drugs, National Center for Safety Evaluation of Drugs, National Institutes for Food and Drug Control, Beijing, People’s Republic of China
| | - Yufa Miao
- Key Laboratory of Beijing for Safety Evaluation of Drugs, National Center for Safety Evaluation of Drugs, National Institutes for Food and Drug Control, Beijing, People’s Republic of China
| | - Hua Jiang
- Key Laboratory of Beijing for Safety Evaluation of Drugs, National Center for Safety Evaluation of Drugs, National Institutes for Food and Drug Control, Beijing, People’s Republic of China
| | - Gaofeng Chen
- Key Laboratory of Beijing for Safety Evaluation of Drugs, National Center for Safety Evaluation of Drugs, National Institutes for Food and Drug Control, Beijing, People’s Republic of China
- Center of Safety Evaluation on New Drug, School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou, Guangdong Province, People’s Republic of China
| | - Zhiying Huang
- Center of Safety Evaluation on New Drug, School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou, Guangdong Province, People’s Republic of China
| | - Xue Wang
- Key Laboratory of Beijing for Safety Evaluation of Drugs, National Center for Safety Evaluation of Drugs, National Institutes for Food and Drug Control, Beijing, People’s Republic of China
- Center of Safety Evaluation on New Drug, School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou, Guangdong Province, People’s Republic of China
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Shang Y, Yan Y, Xu W, Tian W, Huang K. Research on Gene Mobility and Gene Flow Between Genetically Modified Mon 15985 Cotton and Pleurotus Ostreatus. J Food Saf 2016. [DOI: 10.1111/jfs.12267] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ying Shang
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering; China Agricultural University; Beijing 100083 China
- Yunnan Food Safety Institute, Kunming University of Science and Technology; Kunming 650500 China
| | - Yan Yan
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering; China Agricultural University; Beijing 100083 China
| | - Wentao Xu
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering; China Agricultural University; Beijing 100083 China
- The Supervision, Inspection & Testing Center of Genetically Modified Food Safety, Ministry of Agriculture; Beijing 100083 China
| | - Wenying Tian
- The Supervision, Inspection & Testing Center of Genetically Modified Food Safety, Ministry of Agriculture; Beijing 100083 China
| | - Kunlun Huang
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering; China Agricultural University; Beijing 100083 China
- The Supervision, Inspection & Testing Center of Genetically Modified Food Safety, Ministry of Agriculture; Beijing 100083 China
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A 90-day subchronic feeding study of genetically modified rice expressing Cry1Ab protein in Sprague-Dawley rats. Transgenic Res 2014; 24:295-308. [PMID: 25367203 DOI: 10.1007/s11248-014-9844-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Accepted: 10/17/2014] [Indexed: 01/12/2023]
Abstract
Bacillus thuringiensis (Bt) transgenic rice line (mfb-MH86) expressing a synthetic cry1Ab gene can be protected against feeding damage from Lepidopteran insects, including Sesamia inferens, Chilo suppressalis, Tryporyza incertulas and Cnaphalocrocis medinalis. Rice flour from mfb-MH86 and its near-isogenic control MH86 was separately formulated into rodent diets at concentrations of 17.5, 35 and 70 % (w/w) for a 90-day feeding test with rats, and all of the diets were nutritionally balanced. In this study, the responses of rats fed diets containing mfb-MH86 were compared to those of rats fed flour from MH86. Overall health, body weight and food consumption were comparable between groups fed diets containing mfb-MH86 and MH86. Blood samples were collected prior to sacrifice and a few significant differences (p < 0.05) were observed in haematological and biochemical parameters between rats fed genetically modified (GM) and non-GM diets. However, the values of these parameters were within the normal ranges of values for rats of this age and sex, thus not considered treatment related. In addition, upon sacrifice a large number of organs were weighed, macroscopic and histopathological examinations were performed with only minor changes to report. In conclusion, these results demonstrated that no toxic effect was observed in the conditions of the experiment, based on the different parameters assessed. GM rice mfb-MH86 is as safe and nutritious as non-GM rice.
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A 90-day dietary toxicity study of genetically modified rice T1C-1 expressing Cry1C protein in Sprague Dawley rats. PLoS One 2012; 7:e52507. [PMID: 23300690 PMCID: PMC3531449 DOI: 10.1371/journal.pone.0052507] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Accepted: 11/14/2012] [Indexed: 11/19/2022] Open
Abstract
In a 90-day study, Sprague Dawley rats were fed transgenic T1C-1 rice expressing Cry1C protein and were compared with rats fed non-transgenic parental rice Minghui 63 and rats fed a basal diet. No adverse effects on animal behavior or weight gain were observed during the study. Blood samples were collected and analyzed, and standard hematological and biochemical parameters were compared. A few of these parameters were found to be significantly different, but were within the normal reference intervals for rats of this breed and age, and were thus not considered to be treatment-related. Following sacrifice, a large number of organs were weighed, and macroscopic and histopathological examinations were performed with no changes reported. The aim of this study was to use a known animal model to determine the safety of the genetically modified (GM) rice T1C-1. The results showed no adverse or toxic effects due to T1C-1 rice when tested in this 90-day study.
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Qi X, He X, Luo Y, Li S, Zou S, Cao S, Tang M, Delaney B, Xu W, Huang K. Subchronic feeding study of stacked trait genetically-modified soybean (3Ø5423 × 40-3-2) in Sprague-Dawley rats. Food Chem Toxicol 2012; 50:3256-63. [PMID: 22771368 DOI: 10.1016/j.fct.2012.06.052] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Revised: 06/27/2012] [Accepted: 06/27/2012] [Indexed: 12/21/2022]
Abstract
The genetically-modified (GM) soybean 3Ø5423 × 40-3-2 expresses siRNA for the fatty acid desaturase-2 enzyme which results in higher concentrations of oleic acid (18:1) relative to linoleic acid (18:2) compared with non-GM soybeans. It also expresses the CP4 EPSPS protein for tolerance to glyphosate. In this study, three different dietary concentrations (7.5%, 15% and 30% wt/wt) of 3Ø5423 × 40-3-2 or non-GM soybeans were fed to Sprague-Dawley rats for 90 days during which in-life nutritional and growth performance variables were evaluated followed by analysis of standard clinical chemistry, hematology and organ variables. Compared with rats fed the non-GM control diet, some statistically significant differences were observed in rats fed the 3Ø5423 × 40-3-2 diet. However the differences were not considered treatment-related and commonly fell within the normal ranges of the control group consuming the commercial diet. These results demonstrated that the GM soybean 3Ø5423 × 40-3-2 is as safe as non-GM soybeans.
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Affiliation(s)
- Xiaozhe Qi
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
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Liu HY, Xu WT, Yuan YF, Cao SS, He XY, Li SY, Huang KL, Luo YB. The effect of genetically modified Lactobacillus plantarum 590 on the gut health of sprague-dawley rats. IUBMB Life 2012; 64:617-27. [DOI: 10.1002/iub.1027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2012] [Accepted: 02/20/2012] [Indexed: 01/29/2023]
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