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Ali O, Szabó A. Fumonisin distorts the cellular membrane lipid profile: A mechanistic insight. Toxicology 2024; 506:153860. [PMID: 38871209 DOI: 10.1016/j.tox.2024.153860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 06/04/2024] [Accepted: 06/06/2024] [Indexed: 06/15/2024]
Abstract
Monitoring modifications in membrane lipids in association with external stimuli/agents, including fumonisins (FUMs), is a widely employed approach to assess cellular metabolic response/status. FUMs are prevalent fusariotoxins worldwide that have diverse structures with varying toxicity across species; nevertheless, they can induce metabolic disturbances and disease, including cancer. The capacity of FUMs to disrupt membrane lipids, demonstrated across numerous species and organs/tissues, is ascribed to a multitude of factors/events, which range from direct to indirect effects. Certain events are well established, whereas the potential consequences of others remain speculative. The most notable effect is their resemblance to sphingoid bases, which impacts the synthesis of ceramides leading to numerous changes in lipids' composition that are not limited to sphingolipids' composition of the membranes. The next plausible scenario involves the induction of oxidative stress, which is considered an indirect/secondary effect of FUMs. Additional modes of action include modifications of enzyme activities and nuclear signals related to lipid metabolism, although these are likely not yet fully comprehended. This review provides in-depth insight into the current state of these events and their potential mechanistic actions in modifying membrane lipids, with a focus on long-chain fatty acids. This paper also presents a detailed description of the reported modifications to membrane lipids by FUMs.
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Affiliation(s)
- Omeralfaroug Ali
- Agribiotechnology and Precision Breeding for Food Security National Laboratory, Institute of Physiology and Animal Nutrition, Department of Animal Physiology and Health, Hungarian University of Agriculture and Life Sciences, Guba Sándor Str. 40, Kaposvár 7400, Hungary.
| | - András Szabó
- Agribiotechnology and Precision Breeding for Food Security National Laboratory, Institute of Physiology and Animal Nutrition, Department of Animal Physiology and Health, Hungarian University of Agriculture and Life Sciences, Guba Sándor Str. 40, Kaposvár 7400, Hungary; HUN-REN-MATE Mycotoxins in the Food Chain Research Group, Hungarian University of Agriculture and Life Sciences, Guba Sándor Str. 40, Kaposvár 7400, Hungary
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2
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Fumonisin B 1 disrupts mitochondrial function in oxidatively poised HepG2 liver cells by disrupting oxidative phosphorylation complexes and potential participation of lincRNA-p21. Toxicon 2023; 225:107057. [PMID: 36796496 DOI: 10.1016/j.toxicon.2023.107057] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 02/06/2023] [Accepted: 02/13/2023] [Indexed: 02/16/2023]
Abstract
Fumonisin B1 (FB1) is etiologically linked to cancer, yet the underlying mechanisms remain largely unclear. It is also not known if mitochondrial dysfunction is involved as a contributor to FB1-induced metabolic toxicity. This study investigated the effects of FB1 on mitochondrial toxicity and its implications in cultured human liver (HepG2) cells. HepG2 cells poised to undergo oxidative and glycolytic metabolism were exposed to FB1 for 6 h. We determined mitochondrial toxicity, reducing equivalent levels and mitochondrial sirtuin activity using luminometric, fluorometric and spectrophotometric methods. Molecular pathways involved were determined using western blots and PCR. Our data confirm that FB1 is a mitochondrial toxin capable of disrupting the stability of complexes I and V of the mitochondrial electron transport and decreasing the NAD:NADH ratio in galactose supplemented HepG2 cells. We further showed that in cells treated with FB1, p53 acts as a metabolic stress-responsive transcription factor that induces the expression of lincRNA-p21, which plays a crucial role in stabilising HIF-1α. The findings provide novel insights into the impact of this mycotoxin in the dysregulation of energy metabolism and may contribute to the growing body of evidence of its tumor promoting effects.
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Phan LTK, De Saeger S, Eeckhout M, Jacxsens L. Public health risk due to aflatoxin and fumonisin contamination in rice in the Mekong Delta, Vietnam. INTERNATIONAL JOURNAL OF FOOD CONTAMINATION 2023. [DOI: 10.1186/s40550-023-00104-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
Abstract
AbstractMycotoxin contamination in rice can lead to a health risk for consumers. In this study, the health risk among different age groups of Vietnamese population in the Mekong Delta, Vietnam was evaluated through rice consumption. Total aflatoxins (AFs) and fumonisins (FBs) in raw rice samples (n = 50) were analyzed using an ELISA method. A survey (n = 155) was used to collect data on rice consumption and consumer practices for the evaluation of mycotoxin exposure. Results showed that the frequency of AFs and FBs contamination was 60 and 74% with the average concentrations in raw rice ranging from 1.88–4.00 ng/g and 227–290 ng/g from the lower bound (LB) to the upper bound (UB), respectively. The average AFs exposure due to rice consumption was estimated from 0.81 to 2.44 ng/kg bw/day at scenarios LB – UB with the medium bound (MB) of 2.10, 1.60, 1.92 and 1.23 ng/kg bw/day for children, adolescents, adults and elderly, respectively. These values ranged from 343 to 724 ng/kg bw/day with respect to FBs (scenarios LB - UB), which are below the provisional maximum tolerable daily intakes (PMTDI) value (2000 ng/kg bw/day). The margin of exposure (MoE) to AFs ranged from 160 to 1585,179-2669,149–2175 and 206–3480 for children, adolescent, adults and elderly, respectively from UB - LB, indicating a high health risk for this carcinogenic hazard since the values are so lower than 10,000 (safe limit). However, for FBs, MoE value ranged from 105 to 575 (UB-LB) for all groups, which are higher compared to 100 (safe limit), indicating no risk for public health. The mean cancer risk due to estimated AFs exposure at LB - UB was 0.05–0.13 cases/year/100,000 individuals with MB of 0.08–0.13 cases/year/100,000 people for all four age groups. This study provides new insights into probabilistic risk assessment and potential health impact of mycotoxins in rice in the Mekong Delta, Vietnam.
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van den Brand AD, Bokkers BGH, te Biesebeek JD, Mengelers MJB. Combined Exposure to Multiple Mycotoxins: An Example of Using a Tiered Approach in a Mixture Risk Assessment. Toxins (Basel) 2022; 14:303. [PMID: 35622550 PMCID: PMC9145316 DOI: 10.3390/toxins14050303] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/12/2022] [Accepted: 04/21/2022] [Indexed: 01/27/2023] Open
Abstract
Humans are exposed to mycotoxins on a regular basis. Exposure to a mixture of mycotoxins may, therefore, result in a combination of adverse effects, or trigger the same effects. This should be accounted for when assessing the combined risk of multiple mycotoxins. Here, we show the outcome of using different approaches in assessing the risks related to the combined exposure to mycotoxins. We performed a tiered approach using assessment groups with a common target organ (kidney, liver and haematologic system), or a common adverse effect (phenomenon) (reduced white blood cell count), to combine the exposure to mycotoxins. The combined exposure was calculated for the individuals in this assessment, using the Monte Carlo Risk Assessment (MCRA) tool. The risk related to this combined exposure was assessed using toxicological reference values, e.g., health based guidance values. We show that estimating the combined risk by adding the single compounds' risk distributions slightly overestimates the combined risk in the 95th percentile, as compared to combining the exposures at an individual level. We also show that relative potency factors can be used to refine the mixture risk assessment, as compared to ratios of toxicological reference values with different effect sizes and assessment factors.
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Affiliation(s)
- Annick D. van den Brand
- National Institute for Public Health and the Environment (RIVM), 3721 BA Bilthoven, The Netherlands; (B.G.H.B.); (J.D.t.B.); (M.J.B.M.)
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Dey DK, Kang JI, Bajpai VK, Kim K, Lee H, Sonwal S, Simal-Gandara J, Xiao J, Ali S, Huh YS, Han YK, Shukla S. Mycotoxins in food and feed: toxicity, preventive challenges, and advanced detection techniques for associated diseases. Crit Rev Food Sci Nutr 2022; 63:8489-8510. [PMID: 35445609 DOI: 10.1080/10408398.2022.2059650] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Mycotoxins are produced primarily as secondary fungal metabolites. Mycotoxins are toxic in nature and naturally produced by various species of fungi, which usually contaminate food and feed ingredients. The growth of these harmful fungi depends on several environmental factors, such as pH, humidity, and temperature; therefore, the mycotoxin distribution also varies among global geographical areas. Various rules and regulations regarding mycotoxins are imposed by the government bodies of each country, which are responsible for addressing global food and health security concerns. Despite this legislation, the incidence of mycotoxin contamination is continuously increasing. In this review, we discuss the geographical regulatory guidelines and recommendations that are implemented around the world to control mycotoxin contamination of food and feed products. Researchers and inventors from various parts of the world have reported several innovations for controlling mycotoxin-associated health consequences. Unfortunately, most of these techniques are restricted to laboratory scales and cannot reach users. Consequently, to date, no single device has been commercialized that can detect all mycotoxins that are naturally available in the environment. Therefore, in this study, we describe severe health hazards that are associated with mycotoxin exposure, their molecular signaling pathways and processes of toxicity, and their genotoxic and cytotoxic effects toward humans and animals. We also discuss recent developments in the construction of a sensitive and specific device that effectively implements mycotoxin identification and detection methods. In addition, our study comprehensively examines the recent advancements in the field for mitigating the health consequences and links them with the molecular and signaling pathways that are activated upon mycotoxin exposure.
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Affiliation(s)
- Debasish Kumar Dey
- Department of Biotechnology, Daegu University, Gyeongsan, Republic of Korea
- Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Ji In Kang
- Anticancer Agents Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Cheongwon, Republic of Korea
| | - Vivek K Bajpai
- Department of Energy and Materials Engineering, Dongguk University, Seoul, Republic of Korea
| | - Kwanwoo Kim
- Department of Biological Engineering, Biohybrid Systems Research Center (BSRC), Inha University, Incheon, Republic of Korea
| | - Hoomin Lee
- Department of Biological Engineering, Biohybrid Systems Research Center (BSRC), Inha University, Incheon, Republic of Korea
| | - Sonam Sonwal
- Department of Biological Engineering, Biohybrid Systems Research Center (BSRC), Inha University, Incheon, Republic of Korea
| | - Jesus Simal-Gandara
- Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology, University of Vigo - Ourense Campus, Ourense, Spain
| | - Jianbo Xiao
- Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology, University of Vigo - Ourense Campus, Ourense, Spain
| | - Sajad Ali
- Department of Biotechnology, Yeungnam University, Gyeongsan, Republic of Korea
| | - Yun Suk Huh
- Department of Biological Engineering, Biohybrid Systems Research Center (BSRC), Inha University, Incheon, Republic of Korea
| | - Yong-Kyu Han
- Department of Energy and Materials Engineering, Dongguk University, Seoul, Republic of Korea
| | - Shruti Shukla
- TERI-Deakin Nanobiotechnology Centre, The Energy and Resources Institute, Gurugram, Haryana, India
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van den Brand AD, Bajard L, Steffensen IL, Brantsæter AL, Dirven HAAM, Louisse J, Peijnenburg A, Ndaw S, Mantovani A, De Santis B, Mengelers MJB. Providing Biological Plausibility for Exposure-Health Relationships for the Mycotoxins Deoxynivalenol (DON) and Fumonisin B1 (FB1) in Humans Using the AOP Framework. Toxins (Basel) 2022; 14:279. [PMID: 35448888 PMCID: PMC9030459 DOI: 10.3390/toxins14040279] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/04/2022] [Accepted: 04/10/2022] [Indexed: 02/07/2023] Open
Abstract
Humans are chronically exposed to the mycotoxins deoxynivalenol (DON) and fumonisin B1 (FB1), as indicated by their widespread presence in foods and occasional exposure in the workplace. This exposure is confirmed by human biomonitoring (HBM) studies on (metabolites of) these mycotoxins in human matrices. We evaluated the exposure-health relationship of the mycotoxins in humans by reviewing the available literature. Since human studies did not allow the identification of unequivocal chronic health effects upon exposure to DON and FB1, the adverse outcome pathway (AOP) framework was used to structure additional mechanistic evidence from in vitro and animal studies on the identified adverse effects. In addition to a preliminary AOP for DON resulting in the adverse outcome (AO) 'reduced body weight gain', we developed a more elaborated AOP for FB1, from the molecular initiating event (MIE) 'inhibition of ceramide synthases' leading to the AO 'neural tube defects'. The mechanistic evidence from AOPs can be used to support the limited evidence from human studies, to focus FB1- and DON-related research in humans to identify related early biomarkers of effect. In order to establish additional human exposure-health relationships in the future, recommendations are given to maximize the information that can be obtained from HBM.
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Affiliation(s)
| | - Lola Bajard
- RECETOX, Faculty of Science, Masaryk University, Kotlarska 2, 611 37 Brno, Czech Republic;
| | - Inger-Lise Steffensen
- Norwegian Institute of Public Health (NIPH), 0213 Oslo, Norway; (I.-L.S.); (A.L.B.); (H.A.A.M.D.)
| | - Anne Lise Brantsæter
- Norwegian Institute of Public Health (NIPH), 0213 Oslo, Norway; (I.-L.S.); (A.L.B.); (H.A.A.M.D.)
| | - Hubert A. A. M. Dirven
- Norwegian Institute of Public Health (NIPH), 0213 Oslo, Norway; (I.-L.S.); (A.L.B.); (H.A.A.M.D.)
| | - Jochem Louisse
- Wageningen Food Safety Research (WFSR), 6708 WB Wageningen, The Netherlands; (J.L.); (A.P.)
| | - Ad Peijnenburg
- Wageningen Food Safety Research (WFSR), 6708 WB Wageningen, The Netherlands; (J.L.); (A.P.)
| | - Sophie Ndaw
- Institut National de Recherche et de Sécurité (INRS), 54500 Vandoeuvre-Lés-Nancy, France;
| | - Alberto Mantovani
- Istituto Superiore di Sanità (ISS), 00161 Rome, Italy; (A.M.); (B.D.S.)
| | - Barbara De Santis
- Istituto Superiore di Sanità (ISS), 00161 Rome, Italy; (A.M.); (B.D.S.)
| | - Marcel J. B. Mengelers
- Institute for Public Health and the Environment (RIVM), 3720 BA Bilthoven, The Netherlands;
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Chen J, Wei Z, Wang Y, Long M, Wu W, Kuca K. Fumonisin B 1: Mechanisms of toxicity and biological detoxification progress in animals. Food Chem Toxicol 2021; 149:111977. [PMID: 33428988 DOI: 10.1016/j.fct.2021.111977] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 01/03/2021] [Accepted: 01/05/2021] [Indexed: 01/21/2023]
Abstract
Fumonisin B1 (FB1) is a toxic secondary metabolite produced by the Fusarium molds that can contaminate food and feed. It has been found that FB1 can cause systemic toxicity, including neurotoxicity, hepatotoxicity, nephrotoxicity and mammalian cytotoxicity. This review addresses the toxicity studies carried out on FB1 and outlines the probable mechanisms underlying its immunotoxicity, reproductive toxicity, joint toxicity, apoptosis, and autophagy. In the present work, the research progress of FB1 detoxification in recent years is reviewed, which provides reference for controlling and reducing the toxicity of FB1.
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Affiliation(s)
- Jia Chen
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang, 110866, China.
| | - Zhen Wei
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang, 110866, China.
| | - Yan Wang
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang, 110866, China.
| | - Miao Long
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang, 110866, China.
| | - Wenda Wu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China; Department of Chemistry, Faculty of Science, University of Hradec Kralove, 50003, Hradec Kralove, Czech Republic.
| | - Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, 50003, Hradec Kralove, Czech Republic.
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Abstract
Fungi produce mycotoxins in the presence of appropriate temperature, humidity, sufficient nutrients and if the density of the mushroom mass is favorable. Although all mycotoxins are of fungal origin, all toxic compounds produced by fungi are not called mycotoxins. The interest in mycotoxins first started in the 1960s, and today the interest in mycotoxin-induced diseases has increased. To date, 400 mycotoxins have been identified and the most important species producing mycotoxins belongs to Aspergillus, Penicillium, Alternaria and Fusarium genera. Mycotoxins are classified as hepatotoxins, nephrotoxins, neurotoxins, immunotoxins etc. In this review genotoxic and also other health effects of some major mycotoxin groups like Aflatoxins, Ochratoxins, Patulin, Fumonisins, Zearalenone, Trichothecenes and Ergot alkaloids were deeply analyzed.
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9
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Transcriptome study reveals apoptosis of porcine kidney cells induced by fumonisin B1 via TNF signalling pathway. Food Chem Toxicol 2020; 139:111274. [DOI: 10.1016/j.fct.2020.111274] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 02/13/2020] [Accepted: 03/13/2020] [Indexed: 02/06/2023]
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Beccari G, Stępień Ł, Onofri A, Lattanzio VMT, Ciasca B, Abd-El Fatah SI, Valente F, Urbaniak M, Covarelli L. In Vitro Fumonisin Biosynthesis and Genetic Structure of Fusarium verticillioides Strains from Five Mediterranean Countries. Microorganisms 2020; 8:microorganisms8020241. [PMID: 32053959 PMCID: PMC7074703 DOI: 10.3390/microorganisms8020241] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 02/06/2020] [Indexed: 11/22/2022] Open
Abstract
Investigating the in vitro fumonisin biosynthesis and the genetic structure of Fusarium verticillioides populations can provide important insights into the relationships between strains originating from various world regions. In this study, 90 F. verticillioides strains isolated from maize in five Mediterranean countries (Italy, Spain, Tunisia, Egypt and Iran) were analyzed to investigate their ability to in vitro biosynthesize fumonisin B1, fumonisin B2 and fumonisin B3 and to characterize their genetic profile. In general, 80% of the analyzed strains were able to biosynthesize fumonisins (range 0.03–69.84 μg/g). Populations from Italy, Spain, Tunisia and Iran showed a similar percentage of fumonisin producing strains (>90%); conversely, the Egyptian population showed a lower level of producing strains (46%). Significant differences in fumonisin biosynthesis were detected among strains isolated in the same country and among strains isolated from different countries. A portion of the divergent FUM1 gene and of intergenic regions FUM6-FUM7 and FUM7-FUM8 were sequenced to evaluate strain diversity among populations. A high level of genetic uniformity inside the populations analyzed was detected. Apparently, neither geographical origin nor fumonisin production ability were correlated to the genetic diversity of the strain set. However, four strains from Egypt differed from the remaining strains.
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Affiliation(s)
- Giovanni Beccari
- Department of Agricultural, Food and Environmental Sciences, University of Perugia, 06121 Perugia, Italy; (G.B.); (A.O.); (F.V.)
| | - Łukasz Stępień
- Department of Pathogen Genetics and Plant Resistance, Institute of Plant Genetics, Polish Academy of Sciences, 60-479 Poznan, Poland; (Ł.S.); (M.U.)
| | - Andrea Onofri
- Department of Agricultural, Food and Environmental Sciences, University of Perugia, 06121 Perugia, Italy; (G.B.); (A.O.); (F.V.)
| | - Veronica M. T. Lattanzio
- National Research Council of Italy, Institute of Sciences of Food Production (ISPA-CNR), 70126 Bari, Italy; (V.M.T.L.); (B.C.)
| | - Biancamaria Ciasca
- National Research Council of Italy, Institute of Sciences of Food Production (ISPA-CNR), 70126 Bari, Italy; (V.M.T.L.); (B.C.)
| | - Sally I. Abd-El Fatah
- Food Toxins and Contaminants Department, National Research Centre, Cairo 12622, Egypt;
| | - Francesco Valente
- Department of Agricultural, Food and Environmental Sciences, University of Perugia, 06121 Perugia, Italy; (G.B.); (A.O.); (F.V.)
| | - Monika Urbaniak
- Department of Pathogen Genetics and Plant Resistance, Institute of Plant Genetics, Polish Academy of Sciences, 60-479 Poznan, Poland; (Ł.S.); (M.U.)
| | - Lorenzo Covarelli
- Department of Agricultural, Food and Environmental Sciences, University of Perugia, 06121 Perugia, Italy; (G.B.); (A.O.); (F.V.)
- Correspondence: ; Tel.: +39-0755856464
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Cimbalo A, Alonso-Garrido M, Font G, Manyes L. Toxicity of mycotoxins in vivo on vertebrate organisms: A review. Food Chem Toxicol 2020; 137:111161. [PMID: 32014537 DOI: 10.1016/j.fct.2020.111161] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/21/2020] [Accepted: 01/22/2020] [Indexed: 12/31/2022]
Abstract
Mycotoxins are considered to be a major risk factor affecting human and animal health as they are one of the most dangerous contaminants of food and feed. This review aims to compile the research developed up to date on the toxicological effects that mycotoxins can induce on human health, through the examination of a selected number of studies in vivo. AFB1 shows to be currently the most studied mycotoxin in vivo, followed by DON, ZEA and OTA. Scarce data was found for FBs, PAT, CIT, AOH and Fusarium emerging mycotoxins. The majority of them concerned the investigation of immunotoxicity, whereas the rest consisted in the study of genotoxicity, oxidative stress, hepatotoxicity, cytotoxicity, teratogenicity and neurotoxicity. In order to assess the risk, a wide range of different techniques have been employed across the reviewed studies: qPCR, ELISA, IHC, WB, LC-MS/MS, microscopy, enzymatic assays, microarray and RNA-Seq. In the last decade, the attention has been drawn to immunologic and transcriptomic aspects of mycotoxins' action, confirming their toxicity at molecular level. Even though, more in vivo studies are needed to further investigate their mechanism of action on human health.
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Affiliation(s)
- A Cimbalo
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, University of Valencia, Avinguda Vicent Andrés Estellés S/n, 46100, Burjassot, Spain.
| | - M Alonso-Garrido
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, University of Valencia, Avinguda Vicent Andrés Estellés S/n, 46100, Burjassot, Spain
| | - G Font
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, University of Valencia, Avinguda Vicent Andrés Estellés S/n, 46100, Burjassot, Spain
| | - L Manyes
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, University of Valencia, Avinguda Vicent Andrés Estellés S/n, 46100, Burjassot, Spain
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Huong BTM, Tuyen LD, Madsen H, Brimer L, Friis H, Dalsgaard A. Total Dietary Intake and Health Risks Associated with Exposure to Aflatoxin B 1, Ochratoxin A and Fuminisins of Children in Lao Cai Province, Vietnam. Toxins (Basel) 2019; 11:E638. [PMID: 31684060 PMCID: PMC6891384 DOI: 10.3390/toxins11110638] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 10/30/2019] [Accepted: 10/31/2019] [Indexed: 11/16/2022] Open
Abstract
The health burden of foodborne mycotoxins is considerable, but particularly for children due to their lower detoxification capacity, rapid growth and high intake of food in proportion to their weight. Through a Total Dietary Study approach, the objective was to estimate the dietary exposure and health risk caused by mycotoxins for children under 5 years living in the Lao Cai province in northern Vietnam. A total of 40 composite food samples representing 1008 individual food samples were processed and analyzed by ELISA for aflatoxin B1, ochratoxin A and fumonisins. Results showed that dietary exposure to aflatoxin B1, ochratoxin A and total fumonisins were 118.7 ng/kgbw/day, 52.6 ng/kg bw/day and 1250.0 ng/kg bw/day, respectively. Using a prevalence of hepatitis of 1%, the risk of liver cancer related to exposure of aflatoxin B1 was 12.1 cases/100,000 individual/year. Age-adjusted margin of exposure (MOE) of renal cancer associated with ochratoxin A was 127, while MOE of liver cancer associated with fumonisins was 542. Antropometric data show that 50.4% (60/119) of children were stunted, i.e. height/length for age z-scores (HAZ) below -2, and 3.4% (4/119) of children were classified as wasted, i.e. weight for height z-scores (WHZ) below -2. A significant negative relationship between dietary exposure to individual or mixture of mycotoxins and growth of children was observed indicating that the high mycotoxin intake contributed to stunning in the children studied.
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Affiliation(s)
- Bui Thi Mai Huong
- Department of Veterinary and Animal Disease, Faculty of Health and Medical Sciences, University of Copenhagen, DK- 1870 Frederiksberg C, DK-1870 Copenhagen, Denmark.
- National Institute of Nutrition, 48 Tang Bat Ho Street, Hanoi, Hanoi 100000, Vietnam.
| | - Le Danh Tuyen
- National Institute of Nutrition, 48 Tang Bat Ho Street, Hanoi, Hanoi 100000, Vietnam.
| | - Henry Madsen
- Department of Veterinary and Animal Disease, Faculty of Health and Medical Sciences, University of Copenhagen, DK- 1870 Frederiksberg C, DK-1870 Copenhagen, Denmark.
| | - Leon Brimer
- Department of Veterinary and Animal Disease, Faculty of Health and Medical Sciences, University of Copenhagen, DK- 1870 Frederiksberg C, DK-1870 Copenhagen, Denmark.
| | - Henrik Friis
- Department of Nutrition, Exercise and Sports, Faculty of Sciences, University of Copenhagen, Frederiksberg C, DK- 1958, Copenhagen, Denmark.
| | - Anders Dalsgaard
- Department of Veterinary and Animal Disease, Faculty of Health and Medical Sciences, University of Copenhagen, DK- 1870 Frederiksberg C, DK-1870 Copenhagen, Denmark.
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 639798, Singapore.
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13
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Chen C, Riley RT, Wu F. Dietary Fumonisin and Growth Impairment in Children and Animals: A Review. Compr Rev Food Sci Food Saf 2018; 17:1448-1464. [DOI: 10.1111/1541-4337.12392] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 07/24/2018] [Accepted: 08/01/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Chen Chen
- Dept. of Food Science and Human Nutrition; Michigan State Univ.; East Lansing MI 48824 U.S.A
- Inst. of Quality Standards and Testing Technology for Agro-Products; Chinese Academy of Agricultural Sciences; Beijing 100081 China
| | - Ronald T. Riley
- Dept. of Environmental Health Science; Univ. of Georgia; Athens GA 30602 U.S.A
| | - Felicia Wu
- Dept. of Food Science and Human Nutrition; Michigan State Univ.; East Lansing MI 48824 U.S.A
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Knutsen HK, Barregård L, Bignami M, Brüschweiler B, Ceccatelli S, Cottrill B, Dinovi M, Edler L, Grasl-Kraupp B, Hogstrand C, Hoogenboom LR, Nebbia CS, Petersen A, Rose M, Roudot AC, Schwerdtle T, Vleminckx C, Vollmer G, Wallace H, Dall'Asta C, Gutleb AC, Humpf HU, Galli C, Metzler M, Oswald IP, Parent-Massin D, Binaglia M, Steinkellner H, Alexander J. Appropriateness to set a group health-based guidance value for fumonisins and their modified forms. EFSA J 2018; 16:e05172. [PMID: 32625807 PMCID: PMC7009576 DOI: 10.2903/j.efsa.2018.5172] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
The EFSA Panel on Contaminants in the Food Chain (CONTAM) established a tolerable daily intake (TDI) for fumonisin B1 (FB 1) of 1.0 μg/kg body weight (bw) per day based on increased incidence of megalocytic hepatocytes found in a chronic study with mice. The CONTAM Panel considered the limited data available on toxicity and mode of action and structural similarities of FB 2-6 and found it appropriate to include FB 2, FB 3 and FB 4 in a group TDI with FB 1. Modified forms of FBs are phase I and phase II metabolites formed in fungi, infested plants or farm animals. Modified forms also arise from food or feed processing, and include covalent adducts with matrix constituents. Non-covalently bound forms are not considered as modified forms. Modified forms of FBs identified are hydrolysed FB 1-4 (HFB 1-4), partially hydrolysed FB 1-2 (pHFB 1-2), N-(carboxymethyl)-FB 1-3 (NCM-FB 1-3), N-(1-deoxy-d-fructos-1-yl)-FB 1 (NDF-FB 1), O-fatty acyl FB 1, N-fatty acyl FB 1 and N-palmitoyl-HFB 1. HFB 1, pHFB 1, NCM-FB 1 and NDF-FB 1 show a similar toxicological profile but are less potent than FB 1. Although in vitro data shows that N-fatty acyl FBs are more toxic in vitro than FB 1, no in vivo data were available for N-fatty acyl FBs and O-fatty acyl FBs. The CONTAM Panel concluded that it was not appropriate to include modified FBs in the group TDI for FB 1-4. The uncertainty associated with the present assessment is high, but could be reduced provided more data are made available on occurrence, toxicokinetics and toxicity of FB 2-6 and modified forms of FB 1-4.
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Singh MP, Kang SC. Endoplasmic reticulum stress-mediated autophagy activation attenuates fumonisin B1 induced hepatotoxicity in vitro and in vivo. Food Chem Toxicol 2017; 110:371-382. [PMID: 29097114 DOI: 10.1016/j.fct.2017.10.054] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 09/16/2017] [Accepted: 10/29/2017] [Indexed: 01/07/2023]
Abstract
Although pathological characteristics of fumonisin B1 are known to induce hepatic injury over prolonged periods, the cellular defense mechanisms against the detrimental effects of FB1 are still unknown. The underlying mechanisms of FB1 toxicity are thought to be related with the inhibition of ceramide synthase, causing an accumulation of sphingoid bases, which in turn cause development of oxidative stress. Herein, we investigated whether autophagy, a cellular defense mechanism, protects liver cells from FB1 exposure. To accomplish this, we utilized HepG2 cells and a mouse model to study the effects of FB1 in the autophagy pathway. FB1 was capable of inducing autophagy via the generation of ROS, induction of endoplasmic reticulum stress, phosphorylation of JNK, suppression of mTOR and activation of LC3I/II in HepG2 cells and mice livers. Treatment of HepG2 cells with the ROS scavenger N-acetyl-l-cysteine alleviated ER stress stimulation and induced HepG2 cell death. Moreover, suppression of autophagy with 3-Methyladenine enhanced HepG2 cells apoptosis. Concurrently, four consecutive days exposure of mice livers to FB1 altered the levels of sphingoid bases, hepatic enzymes and induced histopathological changes. Moreover, the expression levels of major ER stress and autophagy-related markers such as PERK, IRE1-α, and LC3I/II also increased. Autophagy activation protected HepG2 cells and mice livers from the lethal effects of FB1. Hence, these findings specify that, the compounds that modify autophagy might be useful therapeutic agents for treatment of patients with FB1 induced liver ailments.
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Affiliation(s)
- Mahendra Pal Singh
- Department of Biotechnology, Daegu University, Gyeongsan, Gyeongbuk, 38453, Republic of Korea
| | - Sun Chul Kang
- Department of Biotechnology, Daegu University, Gyeongsan, Gyeongbuk, 38453, Republic of Korea.
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16
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Dietary exposure to aflatoxin B 1 , ochratoxin A and fuminisins of adults in Lao Cai province, Viet Nam: A total dietary study approach. Food Chem Toxicol 2016; 98:127-133. [DOI: 10.1016/j.fct.2016.10.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 09/27/2016] [Accepted: 10/10/2016] [Indexed: 11/22/2022]
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17
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Effects of chronic deoxynivalenol exposure on p53 heterozygous and p53 homozygous mice. Food Chem Toxicol 2016; 96:24-34. [DOI: 10.1016/j.fct.2016.07.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 07/14/2016] [Accepted: 07/16/2016] [Indexed: 11/20/2022]
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18
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Hove M, Van Poucke C, Njumbe-Ediage E, Nyanga L, De Saeger S. Review on the natural co-occurrence of AFB1 and FB1 in maize and the combined toxicity of AFB1 and FB1. Food Control 2016. [DOI: 10.1016/j.foodcont.2015.06.053] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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He JW, Bondy GS, Zhou T, Caldwell D, Boland GJ, Scott PM. Toxicology of 3-epi-deoxynivalenol, a deoxynivalenol-transformation product by Devosia mutans 17-2-E-8. Food Chem Toxicol 2015; 84:250-9. [PMID: 26363308 DOI: 10.1016/j.fct.2015.09.003] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 08/14/2015] [Accepted: 09/02/2015] [Indexed: 11/24/2022]
Abstract
Microbial detoxification of deoxynivalenol (DON) represents a new approach to treating DON-contaminated grains. A bacterium Devosia mutans 17-2-E-8 was capable of completely transforming DON into a major product 3-epi-DON and a minor product 3-keto-DON. Evaluation of toxicities of these DON-transformation products is an important part of hazard characterization prior to commercialization of the biotransformation application. Cytotoxicities of the products were demonstrated by two assays: a MTT bioassay assessing cell viability and a BrdU assay assessing DNA synthesis. Compared with DON, the IC50 values of 3-epi-DON and 3-keto-DON were respectively 357 and 3.03 times higher in the MTT bioassay, and were respectively 1181 and 4.54 times higher in the BrdU bioassay. Toxicological effects of 14-day oral exposure of the B6C3F1 mouse to DON and 3-epi-DON were also investigated. Overall, there were no differences between the control (free of toxin) and the 25 mg/kg bw/day or 100 mg/kg bw/day 3-epi-DON treatments in body and organ weights, hematology and organ histopathology. However, in mice exposed to DON (2 mg/kg bw/day), white blood cell numbers and serum immunoglobulin levels were altered relative to controls, and lesions were observed in adrenals, thymus, stomach, spleen and colon. Taken together, in vitro and in vivo studies indicate that 3-epi-DON is substantially less toxic than DON.
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Affiliation(s)
- Jian Wei He
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, Ontario, Canada; School of Environmental Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Genevieve S Bondy
- Bureau of Chemical Safety, Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, Ontario, Canada.
| | - Ting Zhou
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, Ontario, Canada.
| | - Don Caldwell
- Bureau of Chemical Safety, Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, Ontario, Canada
| | - Greg J Boland
- School of Environmental Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Peter M Scott
- Bureau of Chemical Safety, Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, Ontario, Canada
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20
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Riley RT, Torres O, Matute J, Gregory SG, Ashley-Koch AE, Showker JL, Mitchell T, Voss KA, Maddox JR, Gelineau-van Waes JB. Evidence for fumonisin inhibition of ceramide synthase in humans consuming maize-based foods and living in high exposure communities in Guatemala. Mol Nutr Food Res 2015; 59:2209-24. [PMID: 26264677 DOI: 10.1002/mnfr.201500499] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 07/31/2015] [Accepted: 08/04/2015] [Indexed: 11/12/2022]
Abstract
SCOPE Fumonisin (FB) occurs in maize and is an inhibitor of ceramide synthase (CerS). We determined the urinary FB1 (UFB1 ) and sphingoid base 1-phosphate levels in blood from women consuming maize in high and low FB exposure communities in Guatemala. METHODS AND RESULTS FB1 intake was estimated using the UFB1 . Sphinganine 1-phosphate (Sa 1-P), sphingosine 1-phosphate (So 1-P), and the Sa 1-P/So 1-P ratio were determined in blood spots collected on absorbent paper at the same time as urine collection. In the first study, blood spots and urine were collected every 3 months (March 2011 to February 2012) from women living in low (Chimaltenango and Escuintla) and high (Jutiapa) FB exposure communities (1240 total recruits). The UFB1 , Sa 1-P/So 1-P ratio, and Sa 1-P/mL in blood spots were significantly higher in the high FB1 intake community compared to the low FB1 intake communities. The results were confirmed in a follow-up study (February 2013) involving 299 women living in low (Sacatepéquez) and high (Santa Rosa and Chiquimula) FB exposure communities. CONCLUSIONS High levels of FB1 intake are correlated with changes in Sa 1-P and the Sa 1-P/So 1-P ratio in human blood in a manner consistent with FB1 inhibition of CerS.
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Affiliation(s)
- Ronald T Riley
- Toxicology and Mycotoxin Research Unit, US National Poultry Research Center, USDA - ARS, R.B. Russell Research Center, Athens, GA, USA
| | - Olga Torres
- Laboratorio Diagnostico Molecular S.A, Guatemala City, Guatemala.,Centro de Investigaciones en Nutrición y Salud, Guatemala City, Guatemala
| | - Jorge Matute
- Centro de Investigaciones en Nutrición y Salud, Guatemala City, Guatemala
| | - Simon G Gregory
- Department of Medicine, Duke University Medical Center, Durham, NC, USA
| | | | - Jency L Showker
- Toxicology and Mycotoxin Research Unit, US National Poultry Research Center, USDA - ARS, R.B. Russell Research Center, Athens, GA, USA
| | - Trevor Mitchell
- Toxicology and Mycotoxin Research Unit, US National Poultry Research Center, USDA - ARS, R.B. Russell Research Center, Athens, GA, USA
| | - Kenneth A Voss
- Toxicology and Mycotoxin Research Unit, US National Poultry Research Center, USDA - ARS, R.B. Russell Research Center, Athens, GA, USA
| | - Joyce R Maddox
- Department of Pharmacology, School of Medicine, Creighton University, Omaha, NE, USA
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21
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Riley RT, Showker JL, Lee CM, Zipperer CE, Mitchell TR, Voss KA, Zitomer NC, Torres O, Matute J, Gregory SG, Ashley-Koch AE, Maddox JR, Gardner N, Gelineau-Van Waes JB. A blood spot method for detecting fumonisin-induced changes in putative sphingolipid biomarkers in LM/Bc mice and humans. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2015; 32:934-49. [PMID: 25833119 DOI: 10.1080/19440049.2015.1027746] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Fumonisins (FB) are mycotoxins found in maize. They are hypothesised risk factors for neural tube defects (NTDs) in humans living where maize is a dietary staple. In LM/Bc mice, FB1-treatment of pregnant dams induces NTDs and results in increased levels of sphingoid base 1-phosphates in blood and tissues. The increased level of sphingoid base 1-phosphates in blood is a putative biomarker for FB1 inhibition of ceramide synthase in humans. Collection of blood spots on paper from finger sticks is a relatively non-invasive way to obtain blood for biomarker analysis. The objective of this study was to develop and validate in an animal model, and ultimately in humans, a method to estimate the volume of blood collected as blood spots on absorbent paper so as to allow quantification of the molar concentration of sphingoid base 1-phosphates in blood. To accomplish this objective, blood was collected from unexposed male LM/Bc and FB1-exposed pregnant LM/Bc mice and humans and applied to two types of absorbent paper. The sphingoid base 1-phosphates, absorbance at 270 nm (A270), and total protein content (Bradford) were determined in the acetonitrile:water 5% formic acid extracts from the dried blood spots. The results show that in both mouse and human the A270, total protein, and blood volume were closely correlated and the volume of blood spotted was accurately estimated using only the A270 of the extracts. In mouse blood spots, as in tissues and embryos, the FB1-induced changes in sphingolipids were correlated with urinary FB1. The half-life of FB1 in the urine was short (<24 h) and the elevation in sphingoid base 1-phosphates in blood was also short, although more persistent than the urinary FB1.
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Affiliation(s)
- Ronald T Riley
- a Toxicology and Mycotoxin Research Unit, R.B. Russell Research Center, USDA - ARS , Athens , GA , USA
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Bondy GS, Caldwell DS, Aziz SA, Coady LC, Armstrong CL, Curran IHA, Koffman RL, Kapal K, Lefebvre DE, Mehta R. Effects of Chronic Ochratoxin A Exposure on p53 Heterozygous and p53 Homozygous Mice. Toxicol Pathol 2015; 43:715-29. [DOI: 10.1177/0192623314568391] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Exposure to the mycotoxin ochratoxin A (OTA) causes nephropathy in domestic animals and rodents and renal tumors in rodents and poultry. Humans are exposed to OTA by consuming foods made with contaminated cereal grains and other commodities. Management of human health risks due to OTA exposure depends, in part, on establishing a mode of action (MOA) for OTA carcinogenesis. To further investigate OTA’s MOA, p53 heterozygous (p53+/−) and p53 homozygous (p53+/+) mice were exposed to OTA in diet for 26 weeks. The former are susceptible to tumorigenesis upon chronic exposure to genotoxic carcinogens. OTA-induced renal damage but no tumors were observed in either strain, indicating that p53 heterozygosity conferred little additional sensitivity to OTA. Renal changes included dose-dependent increases in cellular proliferation, apoptosis, karyomegaly, and tubular degeneration in proximal tubules, which were consistent with ochratoxicosis. The lowest observed effect level for renal changes in p53+/− and p53+/+ mice was 200 μg OTA/kg bw/day. Based on the lack of tumors and the severity of renal and body weight changes at a maximum tolerated dose, the results were interpreted as suggestive of a primarily nongenotoxic (epigenetic) MOA for OTA carcinogenesis in this mouse model.
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Affiliation(s)
- Genevieve S. Bondy
- Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, ON, Canada
| | - Donald S. Caldwell
- Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, ON, Canada
| | - Syed A. Aziz
- Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, ON, Canada
| | - Laurie C. Coady
- Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, ON, Canada
| | - Cheryl L. Armstrong
- Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, ON, Canada
| | - Ivan H. A. Curran
- Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, ON, Canada
| | | | - Kamla Kapal
- Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, ON, Canada
| | - David E. Lefebvre
- Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, ON, Canada
| | - Rekha Mehta
- Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, ON, Canada
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Miller J, Schaafsma A, Bhatnagar D, Bondy G, Carbone I, Harris L, Harrison G, Munkvold G, Oswald I, Pestka J, Sharpe L, Sumarah M, Tittlemier S, Zhou T. Mycotoxins that affect the North American agri-food sector: state of the art and directions for the future. WORLD MYCOTOXIN J 2014. [DOI: 10.3920/wmj2013.1624] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This paper summarises workshop discussions at the 5th international MYCORED meeting in Ottawa, Canada (June 2012) with over 200 participants representing academics, government and industry scientists, government officials and farming organisations (present in roughly equal proportions) from 27 countries. Workshops centred on how mycotoxins in food and feed affect value chains and trade in the region covered by the North American Free Trade Agreement. Crops are contaminated by one or more of five important mycotoxins in parts of Canada and the United States every year, and when contaminated food and feed are consumed in amounts above tolerable limits, human and animal health are at risk. Economic loss from such contamination includes reduced crop yield, grain quality, animal productivity and loss of domestic and export markets. A systematic effort by grain producers, primary, transfer, and terminal elevators, millers and food and feed processers is required to manage these contaminants along the value chain. Workshops discussed lessons learned from investments in plant genetics, fungal genomics, toxicology, analytical and sampling science, management strategies along the food and feed value chains and methods to ameliorate the effects of toxins in grain on animal production and on reducing the impact of mycotoxins on population health in developing countries. These discussions were used to develop a set of priorities and recommendations.
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Affiliation(s)
- J.D. Miller
- Department of Chemistry, Carleton University, 228 Steacie Building, Ottawa, ON K1S 5B6, Canada
| | - A.W. Schaafsma
- Ridgetown Campus, University of Guelph, 120 Main Street East, Ridgetown, ON N0P 2C0, Canada
| | - D. Bhatnagar
- Southern Regional Research Center, USDA, ARS, 1100 Robert E. Lee Boulevard, New Orleans, LA 70124, USA
| | - G. Bondy
- Health Canada, Food Directorate, Bureau of Chemical Safety, 251 Sir Frederick Banting Driveway, 2202C Ottawa, ON K1A 0K9, Canada
| | - I. Carbone
- Department of Plant Pathology, North Carolina State University, 851 Main Campus Drive, Suite 233, Partners III, Raleigh, NC 27606, USA
| | - L.J. Harris
- Agriculture and Agri-Food Canada, Eastern Cereal and Oilseed Research Centre, 960 Carling Ave., Ottawa, ON K1A 0C6, Canada
| | - G. Harrison
- Canadian National Millers' Association, 236 Metcalfe Street, Ottawa, ON K2P 1R3, Canada
| | - G.P. Munkvold
- Department of Plant Pathology and Microbiology, Iowa State University, 160 Seed Science Building, Ames, IA 50011, USA
| | - I.P. Oswald
- Toxalim, Research Centre in Food Toxicology, INRA, UMR1331, 180 Chemin de Tournefeuille, 31027 Toulouse, France
| | - J.J. Pestka
- Department of Microbiology and Molecular Genetics, Michigan State University, 234 GM Trout Building, East Lansing, MI 48824-1224, USA
| | - L. Sharpe
- DuPont Pioneer Hi-Bred, 7398 Queen's Line, Chatham, ON N7M 5L1, Canada
| | - M.W. Sumarah
- Agriculture and Agri-Food Canada, Southern Crop Protection and Food Research Centre, 1391 Sandford Street, London, ON N5V 4T3, Canada
| | - S.A. Tittlemier
- Grain Research Laboratory, Canadian Grain Commission, 1404-303 Main Street, Winnipeg, MB R3C 3G8, Canada
| | - T. Zhou
- Agriculture and Agri-Food Canada, Guelph Food Research Center, 93 Stone Road West, Guelph, ON N1G 5C9, Canada
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