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Nossol C, Landgraf P, Barta-Böszörmenyi A, Kahlert S, Kluess J, Isermann B, Stork O, Dieterich DC, Dänicke S, Rothkötter HJ. Deoxynivalenol affects cell metabolism in vivo and inhibits protein synthesis in IPEC-1 cells. Mycotoxin Res 2023:10.1007/s12550-023-00489-z. [PMID: 37256505 PMCID: PMC10393834 DOI: 10.1007/s12550-023-00489-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 05/16/2023] [Accepted: 05/17/2023] [Indexed: 06/01/2023]
Abstract
Deoxynivalenol is present in forage crops in concentrations that endanger animal welfare but is also found in cereal-based food. The amphipathic nature of mycotoxins allows them to cross the cell membrane and interacts with different cell organelles such as mitochondria and ribosomes. In our study, we investigated the gene expression of several genes in vivo and in vitro that are related to the metabolism. We observed a significantly higher COX5B and MHCII expression in enterocytes of DON-fed pigs compared to CON-fed pigs and a marked increase in GAPDH and SLC7A11 in DON-fed pigs, but we could not confirm this in vitro in IPEC-1. In vitro, functional metabolic analyses were performed with a seahorse analyzer. A significant increase of non-mitochondrial respiration was observed in all DON-treatment groups (50-2000 ng/mL). The oxygen consumption of cells, which were cultured on membranes, was examined with a fiber-glass electrode. Here, we found significantly lower values for DON 200- and DON 2000-treatment group. The effect on ribosomes was investigated using biorthogonal non-canonical amino acid tagging (BONCAT) to tag newly synthesized proteins. A significantly reduced amount was found in almost all DON-treatment groups. Our findings clearly show that apical and basolateral DON-treatment of epithelial cell layer results in decreasing amounts of newly synthesized proteins. Furthermore, our study shows that DON affects enterocyte metabolism in vivo and in vitro.
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Affiliation(s)
- Constanze Nossol
- Institute of Anatomy, Medical Faculty, Otto-von-Guericke-University Magdeburg, Leipziger Strasse 44, Magdeburg, 39120, Germany.
| | - Peter Landgraf
- Institute of Pharmacology and Toxicology, Medical Faculty, Otto-von-Guericke-University Magdeburg, Leipziger Strasse 44, Magdeburg, 39120, Germany
| | - Anikó Barta-Böszörmenyi
- Institute of Anatomy, Medical Faculty, Otto-von-Guericke-University Magdeburg, Leipziger Strasse 44, Magdeburg, 39120, Germany
| | - Stefan Kahlert
- Institute of Anatomy, Medical Faculty, Otto-von-Guericke-University Magdeburg, Leipziger Strasse 44, Magdeburg, 39120, Germany
| | | | - Berend Isermann
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig, Leipzig, 04103, Germany
| | - Oliver Stork
- Deparment of Genetics and Molecular Neurobiology, Institute of Biology, Otto-von-Guericke-University Magdeburg, Leipziger Strasse 44, Magdeburg, 39120, Germany
| | - Daniela C Dieterich
- Institute of Pharmacology and Toxicology, Medical Faculty, Otto-von-Guericke-University Magdeburg, Leipziger Strasse 44, Magdeburg, 39120, Germany
| | - Sven Dänicke
- Friedrich-Loeffler Institute, Braunschweig, 38116, Germany
| | - H-J Rothkötter
- Institute of Anatomy, Medical Faculty, Otto-von-Guericke-University Magdeburg, Leipziger Strasse 44, Magdeburg, 39120, Germany
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Schrenk D, Bignami M, Bodin L, Chipman JK, del Mazo J, Grasl‐Kraupp B, Hogstrand C, Leblanc J, Nielsen E, Ntzani E, Petersen A, Sand S, Schwerdtle T, Vleminckx C, Wallace H, Daenicke S, Nebbia CS, Oswald IP, Rovesti E, Steinkellner H, Hoogenboom L(R. Assessment of information as regards the toxicity of fumonisins for pigs, poultry and horses. EFSA J 2022; 20:e07534. [PMID: 36034321 PMCID: PMC9399829 DOI: 10.2903/j.efsa.2022.7534] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
In 2018, the EFSA Panel on Contaminants in the Food Chain (CONTAM) adopted a Scientific Opinion on the risks for animal health related to the presence of fumonisins, their modified forms and hidden forms in feed. A no observed adverse effect level (NOAEL) of 1 mg/kg feed was established for pigs. In poultry a NOAEL of 20 mg/kg feed and in horses a reference point for adverse animal health effect of 8.8 mg/kg feed was established, referred to as NOAEL. The European Commission (EC) requested EFSA to review the information regarding the toxicity of fumonisins for pigs, poultry and horses and to revise, if necessary, the established NOAELs. The EFSA CONTAM Panel considered that the term reference point (RP) for adverse animal health effects better reflects the uncertainties in the available studies. New evidence which had become available since the previous opinion allowed to revise an RP for adverse animal health effects for poultry from 20 mg/kg to 1 mg/kg feed (based on a LOAEL of 2.5 mg/kg feed for reduced intestinal crypt depth) and for horses from 8.8 to 1.0 mg/kg feed (based on case studies on equine leukoencephalomalacia (ELEM)). For pigs, the previously established NOAEL was confirmed as no further studies suitable for deriving an RP for adverse animal health effects could be identified. Based on exposure estimates performed in the previous opinion, the risk of adverse health effects of feeds containing FB1-3 was considered a concern for poultry, when taking into account the RP of 1 mg/kg feed for intestinal effects. For horses and other solipeds, the risk is considered low, although a large uncertainty associated with exposure was identified. The same conclusions apply to the sum of FB1-3 and their hidden forms.
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Jolly PE, Akinyemiju TF, Sakhuja S, Sheth R. Association of aflatoxin B1 levels with mean CD4 cell count and uptake of ART among HIV infected patients: A prospective study. PLoS One 2022; 17:e0260873. [PMID: 35085253 PMCID: PMC8794094 DOI: 10.1371/journal.pone.0260873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 11/18/2021] [Indexed: 11/23/2022] Open
Abstract
Background Aflatoxin suppresses cellular immunity and accentuates HIV-associated changes in T- cell phenotypes and B- cells. Objective This prospective study was conducted to examine the association of aflatoxin levels with CD4 T-cell count and antiretroviral therapy uptake over time. Methods Sociodemographic and food data were collected from antiretroviral therapy naïve HIV-infected patients. CD4+ counts were collected from participants’ medical records. Plasma samples were tested for aflatoxin B1 albumin adducts, hepatitis B surface antigen, and HIV viral load. Participants were separated into high and low aflatoxin groups based on the median aflatoxin B1 albumin adduct level of 10.4 pg/ml for data analysis. Results Participants with high aflatoxin B1 albumin adduct levels had lower mean CD4 at baseline and at each follow-up period. Adjusted multivariable logistic regression analysis showed that higher baseline aflatoxin B1 adduct levels were associated with statistically significant lower CD4 counts (est = -66.5, p = 0.043). Not starting ART and low/middle socioeconomic status were associated with higher CD4 counts (est = 152.2, p<0.001) and (est = 86.3, p = 0.027), respectively. Conclusion Consistent correlations of higher aflatoxin B1 adduct levels with lower CD4 over time indicate that there is an independent early and prolonged effect of aflatoxin on CD4 even with the initiation of antiretroviral therapy. The prospective study design, evaluation of baseline and follow-up measures, extensive control for potential confounders, and utilization of objective measures of aflatoxin exposure and CD4 count provide compelling evidence for a strong epidemiologic association that deserves careful attention in HIV care and treatment programs.
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Affiliation(s)
- Pauline E. Jolly
- Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
- * E-mail:
| | - Tomi F. Akinyemiju
- Department of Population Health Sciences, School of Medicine, Duke University, Durham, North Carolina, United States of America
| | - Swati Sakhuja
- Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Roshni Sheth
- Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
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Ali O, Mézes M, Balogh K, Kovács M, Szabó A. The Effects of Mixed Fusarium Mycotoxins at EU-Permitted Feed Levels on Weaned Piglets' Tissue Lipids. Toxins (Basel) 2021; 13:444. [PMID: 34199083 PMCID: PMC8309798 DOI: 10.3390/toxins13070444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 06/24/2021] [Accepted: 06/24/2021] [Indexed: 11/17/2022] Open
Abstract
At exactly the individual permitted EU-tolerance dietary limits, fumonisins (FB: 5 mg/kg diet) and mixed fusariotoxins (DZ: 0.9 mg deoxynivalenol + 0.1 mg zearalenone/kg diet, and FDZ: 5 mg fumonisins + 0.9 mg deoxynivalenol + 0.1 mg zearalenone/kg diet) were administered to piglets (n = 6/group) for three weeks. Bodyweights of intoxicated piglets increased, while feed conversion ratios decreased. In FDZ, both the absolute and relative weight of the liver decreased. In the renal-cellular membrane, the most pronounced alterations were in FDZ treatment, followed by individual FB exposure. In both treatments, high proportions of C20:0 and C22:0 with low fatty acid (FA) unsaturation were found. In hepatocyte phospholipids, FDZ toxins exerted antagonistic interactions, and FB had the strongest increasing effect on FA monounsaturation. Among all investigated organs, the spleen lipids were the least responsive, in which FDZ expressed synergistic reactions on C20:0 (↑ FDZ vs. FB) and C22:0 (↓ FDZ vs. DZ). The antioxidant defense of the kidney was depleted (↓ glutathione concentration by FB-exposure). Blood plasma indicated renal injury (profound increase of urea and creatinine in FB vs. DZ and FDZ). FB strongly increased total-cholesterol and low density lipoprotein concentrations, whereas FDZ synergistically increased gamma-glutamyltransferase, alkaline-phosphatase, calcium and phosphorus levels. Summarized, individual and combined multiple fusariotoxins modified the membrane lipid profile and antioxidant defense of splanchnic organs, and serum biochemicals, without retarding growth in piglets.
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Affiliation(s)
- Omeralfaroug Ali
- Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Kaposvár Campus, Guba S. u. 40., 7400 Kaposvár, Hungary; (M.K.); (A.S.)
| | - Miklós Mézes
- Department of Feed Toxicology, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Gödöllő Campus, Páter K. u. 1., 2053 Gödöllő, Hungary; (M.M.); (K.B.)
| | - Krisztián Balogh
- Department of Feed Toxicology, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Gödöllő Campus, Páter K. u. 1., 2053 Gödöllő, Hungary; (M.M.); (K.B.)
| | - Melinda Kovács
- Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Kaposvár Campus, Guba S. u. 40., 7400 Kaposvár, Hungary; (M.K.); (A.S.)
- MTA-KE-SZIE Mycotoxins in the Food Chain Research Group, Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Kaposvár Campus, Guba S. u. 40., 7400 Kaposvár, Hungary
| | - András Szabó
- Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Kaposvár Campus, Guba S. u. 40., 7400 Kaposvár, Hungary; (M.K.); (A.S.)
- MTA-KE-SZIE Mycotoxins in the Food Chain Research Group, Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Kaposvár Campus, Guba S. u. 40., 7400 Kaposvár, Hungary
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Neera, Murali HS. Development and evaluation of multiplex PCR for detection of T-2 and zearalenone producing Fusarium spp. Lett Appl Microbiol 2021; 73:363-371. [PMID: 34101222 DOI: 10.1111/lam.13522] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 03/26/2021] [Accepted: 05/26/2021] [Indexed: 11/28/2022]
Abstract
The study aimed to develop and evaluate a multiplex polymerase chain reaction assay (mPCR) for the concurrent detection of three major mycotoxin metabolic pathway genes, namely tri8 (T-2 toxin), tri6 (trichothecene) and pks4 (zearalenone), along with competitive internal amplification control. Specific primers for each of the aforementioned genes were optimized and validated using 14 reference strains and 10 pure culture isolates. The optimized mPCR assay detected the three metabolic pathway genes in artificially contaminated maize samples with a sensitivity of 2 × 103 CFU per g for tri6 and pks4 positive Fusarium strains, whereas 2 × 104 CFU per g for tri8 positive Fusarium strains. Application of the developed mPCR assay to 30 cereal and 20 feed samples revealed 24% (12 of 50) contamination with either one or more mycotoxins. The results of mPCR assay were further evaluated with high performance liquid chromatography (HPLC), and both methods provided unequivocal results. This mPCR assay might be a supplementary tool to conventional mycotoxin analytical techniques like thin-layer chromatography, HPLC, etc. The current mPCR assay is a rapid and reliable tool for simultaneous, sensitive and specific detection of T-2, zearalenone and trichothecene producing Fusarium spp. from naturally contaminated foods and to monitor them during the processing steps of food and feed commodities.
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Affiliation(s)
- Neera
- Food Biotechnology Division, Defence Food Research Laboratory, Mysore, India
| | - H S Murali
- Food Biotechnology Division, Defence Food Research Laboratory, Mysore, India
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Effects of Fumonisin-Contaminated Corn on Growth Performance of 9 to 28 kg Nursery Pigs. Toxins (Basel) 2020; 12:toxins12090604. [PMID: 32961935 PMCID: PMC7551907 DOI: 10.3390/toxins12090604] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/02/2020] [Accepted: 09/16/2020] [Indexed: 11/25/2022] Open
Abstract
Fumonisin contamination in corn is an emerging issue in animal feed production. Fumonisin disrupts the metabolism of sphingolipids and reduces growth performance. This experiment was conducted to determine the effect of feeding fumonisin-contaminated corn on growth performance and sphinganine (SA) to sphingosine (SO) ratios of 9 to 28 kg pigs. A total of 350 pigs, were used with 5 pigs/pen and 14 pens/treatment. Dietary treatments contained fumonisin-contaminated corn (50 mg/kg of fumonisin B1 + B2) blended with low fumonisin corn (10 mg/kg of fumonisin B1 + B2) to provide dietary fumonisin concentrations of 7.2, 14.7, 21.9, 32.7, and 35.1 mg/kg. From day 0 to 28, increasing fumonisin concentration decreased (linear, p < 0.001) average daily gain, average daily feed intake (linear, p = 0.055), and gain:feed ratio (linear, p = 0.016). Although these response criteria tested linear, the greatest reduction in performance was in pigs fed with 32.7 and 35.1 mg/kg of fumonisin (B1 + B2). Increasing fumonisin concentration increased the serum SA:SO ratio (linear, p < 0.001) on day 14 and 28. In summary, for 9 to 28 kg nursery pigs, increasing fumonisin linearly decreased average daily gain and gain:feed ratio. However, despite the linear response, diets containing up to 21.9 mg/kg of fumonisin did not have as dramatic a decrease in growth performance as those fed more than 32.7 mg/kg. Further research is warranted to determine the effect of fumonisin concentrations between 21.9 and 32.7 mg/kg.
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7
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Gonkowski S, Gajęcka M, Makowska K. Mycotoxins and the Enteric Nervous System. Toxins (Basel) 2020; 12:toxins12070461. [PMID: 32707706 PMCID: PMC7404981 DOI: 10.3390/toxins12070461] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/16/2020] [Accepted: 07/17/2020] [Indexed: 12/14/2022] Open
Abstract
Mycotoxins are secondary metabolites produced by various fungal species. They are commonly found in a wide range of agricultural products. Mycotoxins contained in food enter living organisms and may have harmful effects on many internal organs and systems. The gastrointestinal tract, which first comes into contact with mycotoxins present in food, is particularly vulnerable to the harmful effects of these toxins. One of the lesser-known aspects of the impact of mycotoxins on the gastrointestinal tract is the influence of these substances on gastrointestinal innervation. Therefore, the present study is the first review of current knowledge concerning the influence of mycotoxins on the enteric nervous system, which plays an important role, not only in almost all regulatory processes within the gastrointestinal tract, but also in adaptive and protective reactions in response to pathological and toxic factors in food.
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Affiliation(s)
- Sławomir Gonkowski
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-957 Olsztyn, Poland;
| | - Magdalena Gajęcka
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego Str. 13, 10-718 Olsztyn, Poland;
| | - Krystyna Makowska
- Department of Clinical Diagnostics, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 14, 10-957 Olsztyn, Poland
- Correspondence:
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8
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Perez Gaudio D, Mozo J, Martínez G, Fernández Paggi M, Decundo J, Romanelli A, Dieguez S, Soraci A. Fosfomycin protects intestinal cells from nuclear changes suggestive of deoxynivalenol-induced apoptosis. JOURNAL OF REPORTS IN PHARMACEUTICAL SCIENCES 2020. [DOI: 10.4103/jrptps.jrptps_124_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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9
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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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10
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Chen C, Mitchell NJ, Gratz J, Houpt ER, Gong Y, Egner PA, Groopman JD, Riley RT, Showker JL, Svensen E, Mduma ER, Patil CL, Wu F. Exposure to aflatoxin and fumonisin in children at risk for growth impairment in rural Tanzania. ENVIRONMENT INTERNATIONAL 2018; 115:29-37. [PMID: 29544138 PMCID: PMC5989662 DOI: 10.1016/j.envint.2018.03.001] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 03/01/2018] [Accepted: 03/01/2018] [Indexed: 05/11/2023]
Abstract
Growth impairment is a major public health issue for children in Tanzania. The question remains as to whether dietary mycotoxins play a role in compromising children's growth. We examined children's exposures to dietary aflatoxin and fumonisin and potential impacts on growth in 114 children under 36 months of age in Haydom, Tanzania. Plasma samples collected from the children at 24 months of age (N = 60) were analyzed for aflatoxin B1-lysine (AFB1-lys) adducts, and urine samples collected between 24 and 36 months of age (N = 94) were analyzed for urinary fumonisin B1 (UFB1). Anthropometric, socioeconomic, and nutritional parameters were measured and growth parameter z-scores were calculated for each child. Seventy-two percent of the children had detectable levels of AFB1-lys, with a mean level of 5.1 (95% CI: 3.5, 6.6) pg/mg albumin; and 80% had detectable levels of UFB1, with a mean of 1.3 (95% CI: 0.8, 1.8) ng/ml. This cohort had a 75% stunting rate [height-for-age z-scores (HAZ) < -2] for children at 36 months. No associations were found between aflatoxin exposures and growth impairment as measured by stunting, underweight [weight-for-age z-scores (WAZ) < -2], or wasting [weight-for-height z-scores (WHZ) < -2]. However, fumonisin exposure was negatively associated with underweight (with non-detectable samples included, p = 0.0285; non-detectable samples excluded, p = 0.005) in this cohort of children. Relatively low aflatoxin exposure at 24 months was not linked with growth impairment, while fumonisin exposure at 24-36 months based on the UFB1 biomarkers may contribute to the high growth impairment rate among children of Haydom, Tanzania; which may be associated with their breast feeding and weaning practices.
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Affiliation(s)
- Chen Chen
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, USA
| | - Nicole J Mitchell
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, USA; Uckele Health and Nutrition, Blissfield, MI, USA
| | - Jean Gratz
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA, USA
| | - Eric R Houpt
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA, USA
| | - Yunyun Gong
- School of Food Science and Nutrition, University of Leeds, UK
| | - Patricia A Egner
- Department of Environmental Health Sciences, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, MD, USA
| | - John D Groopman
- Department of Environmental Health Sciences, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, MD, USA
| | - Ronald T Riley
- Toxicology and Mycotoxin Research Unit, National Poultry Disease Research Center, R.B. Russell Research Center, USDA-ARS, Athens, GA, USA
| | - Jency L Showker
- Toxicology and Mycotoxin Research Unit, National Poultry Disease Research Center, R.B. Russell Research Center, USDA-ARS, Athens, GA, USA
| | - Erling Svensen
- Haukeland University Hospital, Bergen, Norway; Haydom Lutheran Hospital, Manyara Region, Tanzania; University of Bergen, Norway
| | | | - Crystal L Patil
- Department of Women, Children and Family Health Science, University of Illinois at Chicago, College of Nursing, Chicago, IL, USA
| | - Felicia Wu
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, USA.
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Schwartz-Zimmermann H, Hartinger D, Doupovec B, Gruber-Dorninger C, Aleschko M, Schaumberger S, Nagl V, Hahn I, Berthiller F, Schatzmayr D, Moll W. Application of biomarker methods to investigate FUMzyme mediated gastrointestinal hydrolysis of fumonisins in pigs. WORLD MYCOTOXIN J 2018. [DOI: 10.3920/wmj2017.2265] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Fumonisins are among the most prevalent mycotoxins in feedstuffs. They disrupt the sphingolipid metabolism, thereby inducing a plethora of toxic effects in livestock. Supplementation with mycotoxin-degrading enzymes is a promising strategy for the detoxification of feedstuffs in the animals’ gastrointestinal tract. Here, we evaluated the suitability of the fumonisin esterase FumD as a feed additive (FUMzyme®) for the prevention of fumonisin toxicity in pigs by using a combination of different fumonisin biomarkers (sphinganine to sphingosine (Sa/So) ratio in serum and organs, concentrations of fumonisin B1 and hydrolysed derivatives in urine and faeces). In a pre-trial, we exposed pigs to 30 mg/kg fumonisins in feed and found the minimum effective dose of FUMzyme to be 15 U/kg. In a second trial we investigated the long-term efficacy of this minimum effective FUMzyme dose to counteract toxic effects elicited by 6 weeks of exposure to 2.5 mg/kg fumonisins in a diet containing naturally contaminated maize. Supplementation of feed with the minimum effective FUMzyme dose prevented an increase in the Sa/So ratio in serum and kidneys of fumonisin exposed pigs. The Sa/So ratio in serum proved to be the most reliable biomarker. The fumonisin pattern in faeces was less suitable as biomarker for assessing the efficacy of FUMzyme due to natural gastrointestinal hydrolysis of fumonisins. Analysis of urine samples provided additional information about gastrointestinal fumonisin hydrolysis before fumonisin absorption, but was analytically challenging because of low urinary fumonisin concentrations.
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Affiliation(s)
- H.E. Schwartz-Zimmermann
- Christian Doppler Laboratory for Mycotoxin Metabolism, Center for Analytical Chemistry, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna, 3430 Tulln, Austria
| | - D. Hartinger
- BIOMIN Research Center, Technopark 1, 3430 Tulln, Austria
| | - B. Doupovec
- BIOMIN Research Center, Technopark 1, 3430 Tulln, Austria
| | | | - M. Aleschko
- BIOMIN Research Center, Technopark 1, 3430 Tulln, Austria
| | | | - V. Nagl
- Christian Doppler Laboratory for Mycotoxin Metabolism, Center for Analytical Chemistry, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna, 3430 Tulln, Austria
- BIOMIN Research Center, Technopark 1, 3430 Tulln, Austria
| | - I. Hahn
- Christian Doppler Laboratory for Mycotoxin Metabolism, Center for Analytical Chemistry, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna, 3430 Tulln, Austria
| | - F. Berthiller
- Christian Doppler Laboratory for Mycotoxin Metabolism, Center for Analytical Chemistry, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna, 3430 Tulln, Austria
| | - D. Schatzmayr
- BIOMIN Research Center, Technopark 1, 3430 Tulln, Austria
| | - W.D. Moll
- BIOMIN Research Center, Technopark 1, 3430 Tulln, Austria
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Soler L, Oswald I. The importance of accounting for sex in the search of proteomic signatures of mycotoxin exposure. J Proteomics 2018; 178:114-122. [DOI: 10.1016/j.jprot.2017.12.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 12/18/2017] [Accepted: 12/22/2017] [Indexed: 10/18/2022]
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13
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Abbasi F, Liu J, Zhang H, Shen X, Luo X. Effects of feeding corn naturally contaminated with aflatoxin on growth performance, apparent ileal digestibility, serum hormones levels and gene expression of Na +, K +-ATPase in ducklings. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2017; 31:91-97. [PMID: 28823127 PMCID: PMC5756929 DOI: 10.5713/ajas.17.0383] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 07/14/2017] [Accepted: 08/03/2017] [Indexed: 11/27/2022]
Abstract
Objective A 14-d trial was conducted to determine the effects of feeding corn naturally contaminated with aflatoxin B1 (AFB1) on growth performance, apparent ileal digestibility, serum hormones levels and gene expression of Na+, K+-ATPase in ducklings. Methods A total of 704 ducklings were blocked on the basis of sex and body weight (BW), and then allocated randomly to one of the following two treatments: i) CON, basal diet and ii) AFB1, diets with 100% of normal corn replaced with AFB1 contaminated corn. There were 22 pens per treatment and 16 birds per pen. The concentration of AFB1 was 195.4 and 124.35 μg/kg in the contaminated corn and AFB1 diet, respectively. Results The AFB1 decreased average daily gain, average daily feed intake, d 7 BW, final BW in the whole trial, and feed conversion ratio (FCR) during d 8 to 14 and d 1 to 14 by 10% to 47% (p<0.05), while FCR during d 1 to 7 was increased (p<0.05). AFB1 did not affect mortality to 7 d of age, and then increased to 5.8% from 8 to 14 d of age (p<0.01). Apparent ileal gross energy digestibility was reduced by AFB1, whereas apparent ileal digestibility of dry matter, nitrogen, and amino acid was improved (p<0.01). Feeding AFB1 diets increased serum concentration of leptin and insulin-like growth factors-1 (IGF-1) (p<0.05), but had no effect on neuropeptide Y, ghrelin, cholecystokinin-8 or insulin (p>0.05). Dietary treatments did not influence relative expression of jejunal Na+, K+-ATPase gene (p>0.05). Conclusion Taken together, feeding corn naturally contaminated with AFB1 reduced growth performance, improved apparent ileal digestibility, and affected serum leptin and IGF-1 in ducklings from d 1 to 14.
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Affiliation(s)
- Farzana Abbasi
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
| | - Jingbo Liu
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China.,State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Hongfu Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xiaoyun Shen
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China.,State Engineering Technology Institute for Karst Desertification Control, Guizhou Normal University, Guiyang 550001, China
| | - Xuegang Luo
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
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Hsiao SH, Tumbleson ME, Constable PD, Haschek WM. Use of Formalin-Fixed Tissues to Determine Fumonisin B1-Induced Sphingolipid Alterations in Swine. J Vet Diagn Invest 2016; 19:425-30. [PMID: 17609357 DOI: 10.1177/104063870701900417] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Fumonisin B1 is a mycotoxin that causes lethal pulmonary edema in swine. Sphinganine, sphingosine, and the sphinganine to sphingosine ratio are important biomarkers for fumonisin B1 exposure. Currently, tissues selected for sphinganine and sphingosine analyses are frozen at −80°C until analyses take place. However, for diagnostics and some research projects, formalin is used more routinely as a preservative for long-term storage of tissues. To determine whether formalin-fixed tissues could be used for sphinganine and sphingosine analyses, sphinganine and sphingosine concentrations were quantified in both frozen and formalin-fixed lung, liver, kidney, and heart from fumonisin B1-treated and control pigs. Tissues were evaluated 3 months after freezing and 3, 6, and 12 months after formalin fixation. Sphinganine, sphingosine, and the sphinganine to sphingosine ratio of both frozen and formalin-fixed lung and liver from fumonisin B1-treated pigs were elevated. Formalin-fixed tissues had lower sphinganine and sphingosine concentrations but higher sphinganine to sphingosine ratios than the corresponding frozen tissues. Storage in formalin for up to 12 months did not affect the results. Sphingosine analysis could not be performed in formalin-fixed heart and kidney because of noninterpretable chromatograms. Therefore, formalin-fixed lung and liver can be used to determine fumonisin B1-induced sphinganine and sphingosine alterations in swine, with the sphinganine to sphingosine ratio being the most useful.
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Affiliation(s)
- Shih-Hsuan Hsiao
- Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL 61802, USA.
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Kovács M, Pósa R, Tuboly T, Donkó T, Repa I, Tossenberger J, Szabó-Fodor J, Stoev S, Magyar T. Feed exposure to FB1 can aggravate pneumonic damages in pigs provoked by P. multocida. Res Vet Sci 2016; 108:38-46. [PMID: 27663368 DOI: 10.1016/j.rvsc.2016.07.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 06/23/2016] [Accepted: 07/28/2016] [Indexed: 11/18/2022]
Abstract
The possible interaction between Pasteurella multocida and the mycotoxin fumonisin B1 (FB1), recognised as one of the most often food/feed contaminant, was studied with the aim to evaluate whether and how FB1 can influence and/or complicate the development and severity of various pathological damages provoked by Pasteurella multocida in some internal organs of pigs. Heavier lung pathology was seen in pigs experimentally infected with Pasteurella multocida, when the same were exposed to 20ppm dietary levels of fumonisin B1 (FB1) as was assessed by gross pathology, pathomorphological examinations, clinical biochemistry and some immunological investigations. The most typical damages in FB1 treated pigs were the strong oedema in the lung and the slight oedema in the other internal organs and mild degenerative changes in the kidneys, whereas the typical pathomorphological findings in pigs infected with Pasteurella multocida was broncho-interstitial pneumonia. FB1 was found to aggravate pneumonic changes provoked by P. multocida in the cranial lobes of the lung and to complicate pneumonic damages with interstitial oedema in the lung. No macroscopic damages were observed in the pigs infected only with Pasteurella multocida. It can be concluded that the feed intake of FB1 in pigs may complicate or exacerbate the course of P. multocida serotype A infection.
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Affiliation(s)
- Melinda Kovács
- Faculty of Animal Science, Kaposvár University, Guba Sándor u. 40, H-7400 Kaposvár, Hungary; MTA-KE Mycotoxins in the food chain Research Group, Guba Sándor u. 40, H-7400 Kaposvár, Hungary
| | - Roland Pósa
- Faculty of Animal Science, Kaposvár University, Guba Sándor u. 40, H-7400 Kaposvár, Hungary
| | - Tamás Tuboly
- Department of Microbiology and Infectious Diseases, Faculty of Veterinary Science, Szent István University, Hungária krt 23-25, H-1143 Budapest, Hungary
| | - Tamás Donkó
- Faculty of Animal Science, Kaposvár University, Guba Sándor u. 40, H-7400 Kaposvár, Hungary
| | - Imre Repa
- Faculty of Animal Science, Kaposvár University, Guba Sándor u. 40, H-7400 Kaposvár, Hungary
| | - János Tossenberger
- Faculty of Animal Science, Kaposvár University, Guba Sándor u. 40, H-7400 Kaposvár, Hungary
| | - Judit Szabó-Fodor
- MTA-KE Mycotoxins in the food chain Research Group, Guba Sándor u. 40, H-7400 Kaposvár, Hungary
| | - Stoycho Stoev
- Dept of General and clinical pathology, Faculty of Veterinary Medicine, Trakia University, Stara Zagora 6000, Bulgaria.
| | - Tibor Magyar
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Hungária krt. 21, H-1143, Budapest, Hungary
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Wen J, Mu P, Deng Y. Mycotoxins: cytotoxicity and biotransformation in animal cells. Toxicol Res (Camb) 2016; 5:377-387. [PMID: 30090353 PMCID: PMC6062401 DOI: 10.1039/c5tx00293a] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 01/06/2016] [Indexed: 12/12/2022] Open
Abstract
Mycotoxins are secondary metabolites produced by many microfungi. Hitherto, over 300 mycotoxins with diverse structures have been identified. They contaminate most cereals and feedstuffs, which threaten human and animal health by exerting acute, sub-acute and chronic toxicological effects, with some considered as carcinogens. Many mycotoxins at low concentrations are able to induce the expression of cytochrome P450 and other enzymes implicated in the biotransformation and metabolization of mycotoxins in vivo and in vitro. Mycotoxins and their metabolites elicit different cellular disorders and adverse effects such as oxidative stress, inhibition of translation, DNA damage and apoptosis in host cells, thus causing various kinds of cytotoxicities. In this review, we summarize the biotransformation of mycotoxins in animal cells by CYP450 isoforms and other enzymes, their altered expression under mycotoxin exposure, and recent progress in mycotoxin cytotoxicity in different cell lines. Furthermore, we try to generalize the molecular mechanisms of mycotoxin effects in human and animal cells.
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Affiliation(s)
- Jikai Wen
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms , College of Life Sciences , South China Agricultural University , Tianhe District , Guangzhou , Guangdong 510642 , P. R. China . ; ; Tel: +86 20 38604967
| | - Peiqiang Mu
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms , College of Life Sciences , South China Agricultural University , Tianhe District , Guangzhou , Guangdong 510642 , P. R. China . ; ; Tel: +86 20 38604967
| | - Yiqun Deng
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms , College of Life Sciences , South China Agricultural University , Tianhe District , Guangzhou , Guangdong 510642 , P. R. China . ; ; Tel: +86 20 38604967
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Rossi F, Morlacchini M, Fusconi G, Pietri A, Piva G. Effect of insertion of Bt gene in corn and different fumonisin content on growth performance of weaned piglets. ITALIAN JOURNAL OF ANIMAL SCIENCE 2016. [DOI: 10.4081/ijas.2011.e19] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Pósa R, Stoev S, Kovács M, Donkó T, Repa I, Magyar T. A comparative pathological finding in pigs exposed to fumonisin B1 and/or Mycoplasma hyopneumoniae. Toxicol Ind Health 2014; 32:998-1012. [PMID: 25107460 DOI: 10.1177/0748233714543735] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A more complicated pathology was observed in female pigs infected with Mycoplasma hyopneumoniae, when the same were exposed to 20 ppm dietary levels of fumonisin B1 (FB1) starting 14 days before infection for a period of 42 days as was assessed by gross pathology and pathomorphological examinations or computed tomography, and also manifested by the strong deterioration of the pneumonic process in two pigs and the subsequent euthanizing of one pig. Typical damages in FB1-fed pigs were a strong oedema in the lung and slight oedema in the other internal organs and mild degenerative changes in the kidneys, whereas the typical pathomorphological changes in M. hyopneumoniae-infected pigs corresponded to the morphologic pattern of a catarrhal bronchointerstitial pneumonia more pronounced in the cranial and middle lobes or in the cranial third of the caudal lobe of the lung. The pigs treated by both pathogens (toxic and infectious) revealed strong oedematous changes in the interstitium of lung in addition to deteriorated and extended bronchointerstitial pneumonic process.
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Affiliation(s)
- Roland Pósa
- Faculty of Animal Science, Kaposvár University, Kaposvár, Hungary
| | - Stoycho Stoev
- Department of General and Clinical Pathology, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
| | - Melinda Kovács
- Faculty of Animal Science, Kaposvár University, Kaposvár, Hungary Research Group of 'Mycotoxins in the Food Chain' of the Hungarian Academy of Sciences and Kaposvár University, Hungary
| | - Tamás Donkó
- Faculty of Animal Science, Kaposvár University, Kaposvár, Hungary
| | - Imre Repa
- Faculty of Animal Science, Kaposvár University, Kaposvár, Hungary
| | - Tibor Magyar
- Centre for Agricultural Research, Hungarian Academy of Sciences, Institute for Veterinary Medical Research, Budapest, Hungary
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Affiliation(s)
- Felicia Wu
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, Michigan 48824; ,
| | - John D. Groopman
- Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205;
| | - James J. Pestka
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, Michigan 48824; ,
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20
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Effect of low dose of fumonisins on pig health: immune status, intestinal microbiota and sensitivity to Salmonella. Toxins (Basel) 2013; 5:841-64. [PMID: 23612754 PMCID: PMC3705294 DOI: 10.3390/toxins5040841] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 04/12/2013] [Accepted: 04/12/2013] [Indexed: 11/17/2022] Open
Abstract
The objective of this study was to measure the effects of chronic exposure to fumonisins via the ingestion of feed containing naturally contaminated corn in growing pigs infected or not with Salmonella spp. This exposure to a moderate dietary concentration of fumonisins (11.8 ppm) was sufficient to induce a biological effect in pigs (Sa/So ratio), but no mortality or pathology was observed over 63 days of exposure. No mortality or related clinical signs, even in cases of inoculation with Salmonella (5 × 10⁴ CFU), were observed either. Fumonisins, at these concentrations, did not affect the ability of lymphocytes to proliferate in the presence of mitogens, but after seven days post-inoculation they led to inhibition of the ability of specific Salmonella lymphocytes to proliferate following exposure to a specific Salmonella antigen. However, the ingestion of fumonisins had no impact on Salmonella translocation or seroconversion in inoculated pigs. The inoculation of Salmonella did not affect faecal microbiota profiles, but exposure to moderate concentrations of fumonisins transiently affected the digestive microbiota balance. In cases of co-infection with fumonisins and Salmonella, the microbiota profiles were rapidly and clearly modified as early as 48 h post-Salmonella inoculation. Therefore under these experimental conditions, exposure to an average concentration of fumonisins in naturally contaminated feed had no effect on pig health but did affect the digestive microbiota balance, with Salmonella exposure amplifying this phenomenon.
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21
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He J, Zhang K, Chen D, Ding X, Feng G, Ao X. Effects of maize naturally contaminated with aflatoxin B1 on growth performance, blood profiles and hepatic histopathology in ducks. Livest Sci 2013. [DOI: 10.1016/j.livsci.2012.12.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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Meta-analytical study of productive and nutritional interactions of mycotoxins in growing pigs. Animal 2013; 6:1476-82. [PMID: 23031521 DOI: 10.1017/s1751731111002278] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
A meta-analysis was carried out in order to study the association of mycotoxins with performance and organ weights in growing pigs. A total of 85 articles published between 1968 and 2010 were used, totaling 1012 treatments and 13 196 animals. The meta-analysis followed three sequential analyses: graphical, correlation and variance-covariance. The presence of mycotoxins in diets was seen to reduce the feed intake by 18% and the weight gain in 21% compared with the control group. Deoxynivalenol and aflatoxins were the mycotoxins with the greatest impact on the feed intake and growth of pigs, reducing by 26% and 16% in the feed intake and by 26% and 22% in the weight gain. The mycotoxin concentration in diets and the animal age at challenge were the variables that more improved the coefficient of determination in equations for estimating the effect of mycotoxins on weight gain. The mycotoxin effect on growth proved to be greater in younger animals. In addition, the residual analysis showed that the greater part of the variation in weight gain was explained by the variation in feed intake (87%). The protein and methionine levels in diets could influence the feed intake and the weight gain in challenged animals. The weight gain in challenged pigs showed a positive correlation with the methionine level in diets (0.68). The mycotoxin effect on growth was greater in males compared with the effect on females. The reduction in weight gain was of 15% in the female group and 19% in the male group. Mycotoxin presence in pig diets has interfered in the relative weight of the liver, the kidneys and the heart. Mycotoxins have an influence on performance and organ weight in pigs. However, the magnitude of the effects varies with the type and concentration of mycotoxin, sex and the animal age, as well as nutritional factors.
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Pósa R, Magyar T, Stoev SD, Glávits R, Donkó T, Repa I, Kovács M. Use of computed tomography and histopathologic review for lung lesions produced by the interaction between Mycoplasma hyopneumoniae and fumonisin mycotoxins in pigs. Vet Pathol 2013; 50:971-9. [PMID: 23456966 DOI: 10.1177/0300985813480510] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Mycoplasma hyopneumoniae has a primary role in the porcine respiratory disease complex (PRDC). The objective of this study was to determine whether fumonisin mycotoxins influence the character and/or the severity of pathological processes induced in the lungs of pigs by Mycoplasma hyopneumoniae. Four groups of pigs (n = 7/group) were used, one fed 20 ppm fumonisin B1 (FB1) from 16 days of age (group F), one only infected with M. hyopneumoniae on study day 30 (group M), and a group fed FB1 and infected with M. hyopneumoniae (group MF), along with an untreated control group (group C). Computed tomography (CT) scans of infected pigs (M and MF) on study day 44 demonstrated lesions extending to the cranial and middle or in the cranial third of the caudal lobe of the lungs. The CT images obtained on study day 58 showed similar but milder lesions in 5 animals from group M, whereas lungs from 2 pigs in group MF appeared progressively worse. The evolution of average pulmonary density calculated from combined pixel frequency values, as measured by quantitative CT, was significantly influenced by the treatment and the age of the animals. The most characteristic histopathologic lesion in FB1-treated pigs was pulmonary edema, whereas the pathomorphological changes in Mycoplasma-infected pigs were consistent with catarrhal bronchointerstitial pneumonia. FB1 aggravated the progression of infection, as demonstrated by severe illness requiring euthanasia observed in 1 pig and evidence of progressive pathology in 2 pigs (group MF) between study days 44 and 58.
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Affiliation(s)
- R Pósa
- Kaposvár University, Guba Sándor u. 40, H-7400 Kaposvár, Hungary. kovacs.melinda@ke
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Müller S, Dekant W, Mally A. Fumonisin B1 and the kidney: Modes of action for renal tumor formation by fumonisin B1 in rodents. Food Chem Toxicol 2012; 50:3833-46. [DOI: 10.1016/j.fct.2012.06.053] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Revised: 06/28/2012] [Accepted: 06/29/2012] [Indexed: 11/26/2022]
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Ferreira-Castro F, Potenza M, Rocha L, Correa B. Interaction between toxigenic fungi and weevils in corn grain samples. Food Control 2012. [DOI: 10.1016/j.foodcont.2012.02.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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Delgado JE, Wolt JD. Fumonisin B1 and implications in nursery swine productivity: A quantitative exposure assessment12. J Anim Sci 2010; 88:3767-77. [DOI: 10.2527/jas.2009-2422] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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27
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Growth performance, haematology and serum biochemistry of African catfish (Clarias gariepinus) fingerlings fed graded levels of dietary fumonisin B1. Mycotoxin Res 2010; 26:221-7. [DOI: 10.1007/s12550-010-0059-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2010] [Revised: 05/14/2010] [Accepted: 05/17/2010] [Indexed: 11/26/2022]
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28
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Gbore FA. Growth performance and puberty attainment in growing pigs fed dietary fumonisin B1. J Anim Physiol Anim Nutr (Berl) 2009; 93:761-7. [DOI: 10.1111/j.1439-0396.2008.00866.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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29
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Heinl S, Hartinger D, Thamhesl M, Vekiru E, Krska R, Schatzmayr G, Moll WD, Grabherr R. Degradation of fumonisin B1 by the consecutive action of two bacterial enzymes. J Biotechnol 2009; 145:120-9. [PMID: 19922747 DOI: 10.1016/j.jbiotec.2009.11.004] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2009] [Revised: 11/01/2009] [Accepted: 11/06/2009] [Indexed: 11/25/2022]
Abstract
Detoxification of the mycotoxin fumonisin B(1) comprises at least two enzymatic steps, an initial deesterification reaction, followed by deamination of the resulting hydrolyzed fumonisin B(1). In this study, two genes that are responsible for degradation of fumonisin B(1) by the bacterium Sphingopyxis sp. MTA144 were identified within a gene cluster, assumed to be associated with fumonisin degradation. The first gene encodes a protein which shows similarity to carboxylesterases, type B. The second gene encodes a polypeptide homologous to aminotransferases, class III. The two genes were isolated and expressed heterologously. The effect of the recombinant enzymes on fumonisin B(1) and hydrolyzed fumonisin B(1) was determined. The recombinant carboxylesterase was shown to catalyze the deesterification of fumonisin B(1) to hydrolyzed fumonisin B(1). The heterologously expressed aminotransferase was shown to deaminate hydrolyzed fumonisin B(1) in the presence of pyruvate and pyridoxal phosphate. We propose that the consecutive action of these two enzymes is sufficient for fumonisin B(1) detoxification. The results of this work provide a basis for the development of an enzymatic detoxification process for fumonisin B(1) in food and animal feed, especially under oxygen limited conditions, as they are found, e.g. in ensilaged forage or in the intestinal tract of animals.
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Affiliation(s)
- Stefan Heinl
- Department of Biotechnology, University of Natural Resources and Applied Life Sciences, Muthgasse 18, 1190 Vienna, Austria.
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Consumption of fumonisin B1 for 9 days induces stress proteins along the gastrointestinal tract of pigs. Toxicon 2009; 55:244-9. [PMID: 19647010 DOI: 10.1016/j.toxicon.2009.07.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2009] [Revised: 07/23/2009] [Accepted: 07/24/2009] [Indexed: 12/17/2022]
Abstract
Fumonisin B(1) (FB1) is a mycotoxin which alters intestinal epithelial cell physiology and barrier properties, and accumulates in the colon. Data on effects of FB1 on stress proteins in the gastrointestinal tract (GIT) are lacking. Therefore, we hypothesized that repeated consumption of FB1 alters GIT tissue levels of stress proteins. This was tested using 36 weaned pigs fed a FB1 solution (n=18) or the vehicle (control; n=18) for 9 days. The pigs were then slaughtered, the organs were weighed and GIT tissues were collected for assessing GIT integrity, and for analysing stress proteins by Western blotting and densitometry (n=7 in each group). FB1 had little effects on growth rate but the liver was heavier (P<0.01) in FB1-fed pigs. alphaB crystallin and COX-1 concentrations were eight-fold and 12-fold higher in the colon of FB1-fed pigs than in the controls (P<0.0001). Concentrations of COX-1 and nNOS in the stomach, HSP 70 in the jejunum and HO-2 in the colon were also higher in FB1-fed pigs (P<0.05 to P<0.001). In conclusion, the FB1 extract drastically enhanced colonic levels of alphaB crystallin and COX-1, with milder increases in other stress proteins along the GIT of pigs. The data suggest that the colon is an important target for FB1-induced stress responses.
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Lessard M, Boudry G, Sève B, Oswald IP, Lallès JP. Intestinal physiology and peptidase activity in male pigs are modulated by consumption of corn culture extracts containing fumonisins. J Nutr 2009; 139:1303-7. [PMID: 19474154 DOI: 10.3945/jn.109.105023] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Fumonisin B(1) (FB1) alters intestinal epithelial cell cycle and absorptive, secretory, and barrier properties in vitro, but in vivo data are lacking. Therefore, we tested the hypothesis that repeated intake of a corn culture extract rich in fumonisins, mainly in FB1, alters indices of intestinal absorptive and secretory physiology and barrier function in vivo. Intra-litter pairs of pigs (n = 36) weaned at 28 d, were fed the vehicle (control) or the extract (providing 1.5 mg FB1/kg body weight) daily for 9 d starting 7 d postweaning. After slaughter, the jejunal mucosa of pigs was mounted in Ussing chambers (UC). Extract consumption for 9 d decreased the gain:feed ratio (P = 0.04) and increased liver weight (P = 0.01). Basal net ion secretion (P = 0.02), sodium-dependent glucose absorption (P = 0.02), and theophylline-induced secretion (P < 0.01) of the jejunal mucosa determined in UC were higher in pigs fed the extract than in controls. By contrast, jejunal permeability to the horseradish peroxidase model protein in UC was not influenced by extract consumption. Ileal villi tended to be longer (P = 0.07) and jejunal aminopeptidase N activity was lower (P < 0.01) in pigs fed the extract. In conclusion, consumption of an extract rich in fumonisins for 9 d has the potential to alter intestinal physiology, villous architecture, and enzyme activities. Underlying mechanisms remain to be investigated.
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Affiliation(s)
- Martin Lessard
- Institut National de la Recherche Agronomique Unité Mixte de Recherche 1039, Systèmes d'Elevage, Nutrition Animale et Humaine, F-35590 Saint-Gilles, France
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Wu F, Munkvold GP. Mycotoxins in ethanol co-products: modeling economic impacts on the livestock industry and management strategies. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:3900-3911. [PMID: 18444660 DOI: 10.1021/jf072697e] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The rapidly expanding U.S. ethanol industry is generating a growing supply of co-products, mostly in the form of dried distillers' grain and solubles (DDGS) or wet distillers' grains (WDG). In the United States, 90% of the co-products of maize-based ethanol are fed to livestock. An unintended consequence is that animals are likely to be fed higher levels of mycotoxins, which are concentrated up to three times in DDGS compared to grain. The model developed in this study estimates current losses to the swine industry from weight gain reduction due to fumonisins in added DDGS at $9 million ($2-18 million) annually. If there is complete market penetration of DDGS in swine feed with 20% DDGS inclusion in swine feed and fumonisins are not controlled, losses may increase to $147 million ($29-293 million) annually. These values represent only those losses attributable to one mycotoxin on one adverse outcome on one species. The total loss due to mycotoxins in DDGS could be significantly higher due to additive or multiplicative effects of multiple mycotoxins on animal health. If mycotoxin surveillance is implemented by ethanol producers, losses are shifted among multiple stakeholders. Solutions to this problem include methods to reduce mycotoxin contamination in both pre- and postharvest maize.
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Affiliation(s)
- Felicia Wu
- Department of Environmental and Occupational Health, University of Pittsburgh, Bridgeside Point 560, Pittsburgh, PA 15219, USA.
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Zimmer I, Usleber E, Klaffke H, Weber R, Majerus P, Otteneder H, Gareis M, Dietrich R, Märtlbauer E. Fumonisin intake of the German consumer. Mycotoxin Res 2008; 24:40-52. [DOI: 10.1007/bf02985269] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2008] [Accepted: 04/20/2008] [Indexed: 11/28/2022]
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Dersjant-Li Y, Verstegen MW, Gerrits WJ. The impact of low concentrations of aflatoxin, deoxynivalenol or fumonisin in diets on growing pigs and poultry. Nutr Res Rev 2007; 16:223-39. [DOI: 10.1079/nrr200368] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
AbstractIn the present review, the quantitative impact of dietary aflatoxin, deoxynivalenol (DON) and fumonisin concentrations on performance of pigs and broilers is evaluated, with special emphasis on low concentrations of these toxins. Also, responses in performance of pigs and broilers to these three toxins are related to their absorption and elimination kinetics. By applying simple linear regression, information from many literature sources is integrated and condensed into, for example, estimates of depression in rates of weight gain, relative to non-contaminated diets, with increasing toxin concentrations. It was estimated that with each mg/kg increase of aflatoxin in the diet, the growth rate would be depressed by 16 % for pigs and 5 % for broilers. For DON, with each mg/kg increase in the diet, the growth depression was estimated at about 8 % for pigs, while broilers showed no response to DON concentrations below 16 mg/kg. Fumonisin showed the lowest impact on growth performance; with each mg/kg increase, the depression in growth rate was estimated at 0·4 and 0·0 % for pigs and broilers, respectively. Dietary concentrations that cause a 5 % reduction in growth rate were estimated at 0·3 and 1·0 mg/kg for aflatoxin for pigs and broilers, respectively; 1·8 and 0·6 mg/kg for pure and naturally contaminated DON for pigs, respectively; 21 and 251 mg/kg for fumonisin for pigs and broilers, respectively.
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Abstract
Fumonisins constitute a family of toxic and carcinogenic mycotoxins produced by Fusarium verticillioides (formerly F. moniliforme), a common fungal contaminant of corn. Contamination with fumonisin B(1) (FB(1)) is of concern as this mycotoxin causes various animal diseases. The gastrointestinal tract represents the first barrier against ingested chemicals, food contaminants, and natural toxins. Following ingestion of fumonisin-contaminated food or feed, intestinal epithelial cells could be exposed to a high concentration of toxin. In this review, we have summarized the data dealing with the impact of FB(1) on the intestine. Although FB(1 )is poorly absorbed and metabolized in the intestine, it induces intestinal disturbances (abdominal pain or diarrhea) and causes extra-intestinal organ pathologies (pulmonary edema, leukoencephalomalacia, or neural tube defects). The main toxicological effect of FB(1) reported in vivo and in vitro is the accumulation of sphingoid bases associated with the depletion of complex sphingolipids. This disturbance of the sphingolipid biosynthesis pathway could explain the other observed toxicological effects such as an alteration in intestinal epithelial cell viability and proliferation, a modification of cytokine production, and a modulation of intestinal physical barrier function.
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Affiliation(s)
- Sandrine Bouhet
- Laboratoire de Pharmacologie-Toxicologie, INRA, Toulouse, France
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Kim DH, Yoo HS, Lee YM, Kie JH, Jang S, Oh S. Elevation of sphinganine 1-phosphate as a predictive biomarker for fumonisin exposure and toxicity in mice. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2006; 69:2071-82. [PMID: 17060094 DOI: 10.1080/15287390600746215] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Fumonisins are specific inhibitors of ceramide synthase in sphingolipid metabolism. An alteration in sphingolipid metabolism as a result of fumonisin B1 (FB1) exposure is related to cell death, and sphinganine/sphingosine ratio has been used as an indicator of fumonisin exposure in animals. The objective of this study was to investigate a new biochemical marker for the prediction of fumonisin-induced toxicity. When mice were treated with FB1 (10 mg/kg ip/d) for 5 d, the serum levels of sphingoid bases and their 1-phosphate were markedly elevated. The accumulation of sphingosine 1-phosphate (So-1-P) and sphinganine 1-phosphate (Sa-1-P) in serum following FB1 treatment was more apparent than elevated levels of sphingosine (So) and sphinganine (Sa). Sa-1-P/So-1-P ratio in serum was more elevated than Sa/So ratio following fumonisin B1 treatment, indicating that phosphorylation of sphingoid bases may be a sensitive biomarker for fumonisin exposure. In addition, the tissue levels of Sa and Sa-1-P were also significantly elevated in kidneys, liver, heart, lung and brain. FB1-induced toxicity was confirmed microscopically in both liver and kidneys. Liver lesions consisted of centrilobular hypertrophy and cytoplasmic vacuolization. In addition, hepatic binucleated cells were increased and acidophilic body was observed in FB1-treated mice. Kidney lesions were consistent with tubular nephrosis, and tubules were dilated and contained cell debris in FB1-exposed mice. These results suggested that the elevation of Sa-1-P as well as Sa in serum would be a specific biomarker for predicting FB1 exposure, and elevated tissue levels of Sa-1-P may be related to fumonisin toxicity in animals.
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Affiliation(s)
- Dong-Hyun Kim
- College of Pharmacy, Chungbuk National University, Cheongju, Korea
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Marin DE, Taranu I, Pascale F, Lionide A, Burlacu R, Bailly JD, Oswald IP. Sex-related differences in the immune response of weanling piglets exposed to low doses of fumonisin extract. Br J Nutr 2006; 95:1185-92. [PMID: 16768843 DOI: 10.1079/bjn20061773] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Fumonisin B1 (FB1) is a mycotoxin produced by Fusarium verticillioides, a fungus that commonly contaminates maize. Sex-related effects of FB1 have been observed with respect to carcinogenicity in rodents, to performances in pigs and immunosuppression in mice. In the present study the sex-related effect of FB1 on the pig immune response was determined. Female and castrated male piglets received for 28 d either control feed or feed contaminated with 8 mg FB1/kg feed in the form of F. verticillioides culture material. At day 7 and day 21, animals were immunised subcutaneously with a Mycoplasma agalactiae vaccine. Ingestion of FB1-contaminated feed significantly decreased weight gain in males but had no effect in females. No sex-related difference was observed in biochemical parameters, but a higher level of creatinine was noted in toxin-treated animals. FB1 also altered the pig immune response in a sex-specific manner. In males, ingestion of FB1-contaminated feed significantly decreased specific antibody levels after vaccination as well as the mRNA expression level of IL-10. In females, the toxin has no effect on specific antibodies or on cytokine mRNA levels. The results of the present study indicate that FB1 is immunosuppressive in pigs. The magnitude of this FB1-induced immunosuppression is highly dependent on sex, with males being more susceptible than females.
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Affiliation(s)
- Daniela E Marin
- Laboratoire de Pharmacologie-Toxicologie, UR 66, Institut National de la Recherche Agronomique, Toulouse, France
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Tran ST, Tardieu D, Auvergne A, Bailly JD, Babilé R, Durand S, Benard G, Guerre P. Serum sphinganine and the sphinganine to sphingosine ratio as a biomarker of dietary fumonisins during chronic exposure in ducks. Chem Biol Interact 2006; 160:41-50. [PMID: 16413517 DOI: 10.1016/j.cbi.2005.07.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2005] [Revised: 07/19/2005] [Accepted: 07/20/2005] [Indexed: 10/25/2022]
Abstract
Sphinganine concentration (Sa) and sphinganine to sphingosine ratio (Sa/So) are sensitive biomarkers of fumonisin B1 (FB1) exposure in animals and have been proposed to reveal FB1 exposure in humans. They correlate with liver and kidney toxicity and often precede signs of toxicity. However, the use of Sa and Sa/So is confusing during chronic exposure. Indeed, some authors report altered sphingolipids metabolism, whereas others fail to demonstrate significant effect. The aim of this study was to investigate the kinetics of Sa and Sa/So in the serum of ducks over a 77-day exposure to 0, 2, 8, 32 and 128 mg FB1/kg feeds. Serum biochemistry was also investigated to reveal hepatotoxicity. The results obtained indicate that the kinetics of sphingolipids and serum biochemistry are closely linked with the duration of the exposure. After a strong and rapid increase Sa and Sa/So decrease then stabilize. The lowest investigated dose able to determine a detectable effect is 2 mg/kg feeds, the Sa/So ratio being the most sensitive biomarker of FB1 exposure.
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Affiliation(s)
- S T Tran
- Department of Mycotoxicology, National Veterinary School of Toulouse, 23 Chemin des Capelles, 31076 Toulouse, France
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39
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Opinion of the Scientific Panel on contaminants in the food chain [CONTAM] related to fumonisins as undesirable substances in animal feed. EFSA J 2005. [DOI: 10.2903/j.efsa.2005.235] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Fernández-Surumay G, Osweiler GD, Yaeger MJ, Rottinghaus GE, Hendrich S, Buckley LK, Murphy PA. Fumonisin B-glucose reaction products are less toxic when fed to swine. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2005; 53:4264-71. [PMID: 15884870 DOI: 10.1021/jf0500076] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
The effects of fumonisin B-glucose reaction products in swine diets was examined. Pigs were fed diets containing 528 micromol of total fumonisin B/kg (FB), 528 micromol of total FB-glucose adducts/kg (FB-G, 122 micromol of unreacted FB/kg), or 0 micromol of total FB/kg for 15 days to test the efficacy of the FB-G reaction products in detoxifying FB. Weight gain in FB pigs was lower than in FB-G or controls, which was correlated with feed intake reduction in FB pigs. Serum aspartate aminotransferase, gamma-glutamyltransferase, and total bilirubin in FB pigs were higher than in FB-G or control pigs. Serum sphinganine/shingosine ratios in FB pigs were higher than in FB-G or control pigs. Microscopic examination of tissues from FB pigs showed generalized liver necrosis and apoptosis with marked cellular pleomorphism and disorganized hepatic cords. The liver and kidneys in the FB-G group appeared to be normal. Tissues of controls were free of lesions. Results suggest that dietary FB-G products are less toxic to swine and may provide an detoxification approach in instances of widespread FB grain contamination (p < 0.05).
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41
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Marín S, Magan N, Ramos AJ, Sanchis V. Fumonisin-producing strains of Fusarium: a review of their ecophysiology. J Food Prot 2004; 67:1792-805. [PMID: 15330553 DOI: 10.4315/0362-028x-67.8.1792] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This review focuses on the fumonisin-producing Fusarium species and the ecophysiology of these species. The effects of environmental biotic and abiotic factors on germination, growth, and fumonisin B1 production by Fusarium verticillioides and Fusarium proliferatum have been investigated under laboratory, field, and storage conditions. An understanding of the factors involved in production of fumonisins is the first step in preventing accumulation of these toxins.
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Affiliation(s)
- Sonia Marín
- Food Technology Department, Lleida University, CeRTA-UTPV, Rovira Roure 191, 25198 Lleida, Spain.
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42
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Wu F. Explaining public resistance to genetically modified corn: an analysis of the distribution of benefits and risks. RISK ANALYSIS : AN OFFICIAL PUBLICATION OF THE SOCIETY FOR RISK ANALYSIS 2004; 24:715-726. [PMID: 15209940 DOI: 10.1111/j.0272-4332.2004.00470.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Genetically modified (GM) crops have met with widespread approval among scientists and policy makers in the United States, but public approval of GM crops, both domestically and abroad, is progressing much more slowly. An underlying cause of public wariness may be that both nations and individual consumers do not perceive significant benefits to themselves from GM crops, while fearing the risks they may incur. In this study, an economic analysis is conducted to determine whether the benefits of one type of GM corn, Bt corn (genetically modified to resist damage from the ECB and Southwestern corn borer), outweigh the potential risks; and who the "winners" and "losers" are among stakeholder groups that may be affected by Bt corn. It is found that Bt corn growers, consumers, and industry all benefit from Bt corn adoption, though the purported health and environmental benefits of reducing chemical pesticide usage through Bt corn are negligible. Though the aggregated public benefit is large, the welfare gain to individual consumers is small and may not make up for perceived risks. While environmental and health risks of Bt corn are unlikely, the potential market risks-impacting both the organic corn market and total U.S. corn exports-are found to be significant. Currently, distributional analysis is not a part of regulatory decision making of Bt corn in the United States; yet it may help to explain why decision makers at both the government and individual-consumer levels have failed to embrace Bt corn and other GM crops.
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Affiliation(s)
- Felicia Wu
- Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA 15261, USA
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43
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Oswald IP, Desautels C, Laffitte J, Fournout S, Peres SY, Odin M, Le Bars P, Le Bars J, Fairbrother JM. Mycotoxin fumonisin B1 increases intestinal colonization by pathogenic Escherichia coli in pigs. Appl Environ Microbiol 2004; 69:5870-4. [PMID: 14532038 PMCID: PMC201177 DOI: 10.1128/aem.69.10.5870-5874.2003] [Citation(s) in RCA: 111] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Fumonisin B(1) (FB(1)) is a mycotoxin that commonly occurs in maize. FB(1) causes a variety of toxic effects in different animal species and has been implicated as a contributing factor of esophageal cancers in humans. In the present study, we examined the effect of dietary exposure to FB(1) on intestinal colonization by pathogenic Escherichia coli associated with extraintestinal infection. Three-week-old weaned pigs were given FB(1) by gavage as a crude extract or as a purified toxin at a dose of 0.5 mg/kg of body weight daily for 6 days. On the last day of the toxin treatment, the pigs were orally inoculated with an extraintestinal pathogenic E. coli strain. All animals were euthanized 24 h later, necropsies were performed, and tissues were taken for bacterial counts and light microscopic examination. Ingestion of FB(1) had only a minimal effect on animal weight gain, did not cause any macroscopic or microscopic lesions, and did not change the plasma biochemical profile. However, colonization of the small and large intestines by an extraintestinal pathogenic E. coli strain was significantly increased. Our results show that FB(1) is a predisposing factor to infectious disease and that the pig can be used as a model for the study of the consequences of ingesting mycotoxin-contaminated food.
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Affiliation(s)
- Isabelle P Oswald
- Laboratoire de Pharmacologie-Toxicologie, Institut National de la Recherche Agronomique, Toulouse, France.
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Dilkin P, Zorzete P, Mallmann CA, Gomes JDF, Utiyama CE, Oetting LL, Corrêa B. Toxicological effects of chronic low doses of aflatoxin B(1) and fumonisin B(1)-containing Fusarium moniliforme culture material in weaned piglets. Food Chem Toxicol 2003; 41:1345-53. [PMID: 12909268 DOI: 10.1016/s0278-6915(03)00137-6] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The effects of chronic oral exposure (28 days) to aflatoxin B(1) (AFB(1)) and fumonisin B(1) (FB(1)) were studied in weaned piglets. Six experimental groups, each comprising two neutered males and two females, were fed ad libitum with rations containing: (A) 0 mg of FB(1) and 0 mg of AFB(1)/kg of feed (control); (B) 10 mg of FB(1)/kg of feed; (C) 30 mg of FB(1)/kg of feed; (D) 50 microg of AFB(1)/kg of feed; (E) 10 mg of FB(1) plus 50 microg of AFB(1)/kg of feed; (F) 30 mg of FB(1) plus 50 microg of AFB(1)/kg of feed. The animals were inspected twice daily and their body weight and feed consumption were recorded weekly and daily, respectively. Samples of feces and urine were collected 24 h after the start of the experiment, to check for fumonisin residues by HPLC analysis. Blood samples were drawn at the start of the experiment and after 28 days for quantification of hematological and biochemical parameters. Necropsies were performed after 28 days; at necropsy, the organs were weighed, inspected macroscopically and processed for histopathological and toxicological analyses. All piglets from groups C and F presented typical signs of pulmonary edema, with reduced feed consumption and body weight gain as well as pathological alterations. FB(1) was detected in feces and urine at 24 h of intoxication and in liver after 28 days of intoxication. Increases were detected regarding the following hematological and biochemical parameters in animals from treatments C and F: erythrocyte number; hematocrit; total bilirubin; total protein; activity of serum alkaline phosphatase, aspartate aminotransferase, and alanine aminotransferase. Cholesterol levels were significantly aumented only in animals from groups C and F, whereas albumin concentrations increased in groups C, F, B and E. The average organ/body weight ratio of piglets (hearth, liver and lung) were significantly greater in groups C and F. The only joint effects of FB(1) and AFB(1) detected (group F) were a decrease in feed consumption during the last week of intoxication and in feed conversion throughout the 28 days of intoxication. Chronic intoxication of piglets with AFB(1) and FB(1) leads to important losses of productivity.
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Affiliation(s)
- P Dilkin
- Instituto de Ciências Biomédicas - Universidade de São Paulo, 05508-900 São Paulo, SP, Brazil
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Tran ST, Bailly JD, Tardieu D, Durand S, Benard G, Guerre P. Sphinganine to sphingosine ratio and predictive biochemical markers of fumonisin B1 exposure in ducks. Chem Biol Interact 2003; 146:61-72. [PMID: 12902153 DOI: 10.1016/s0009-2797(03)00084-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The kinetics of free sphinganine (Sa), sphinganine to sphingosine ratio (Sa/So), proteins, cholesterol, alanine aminotransferase (ALAT) and lactate dehydrogenase (LDH) were investigated in the course of fumonisin B1 (FB1) exposure in ducks (20 growing males divided into four groups of 5 receiving, respectively, a daily dose of 0, 5, 15 or 45 mg/kg FB1 via oral administration over 12 days). Descriptive statistics of these parameters were also studied in a large number of ducks not exposed to mycotoxins and free of known pathology. Although the toxin at the end of the treatment affected all the parameters investigated, only 2 days of treatment appeared necessary to increase free Sa concentrations in serum, whereas 6 days were necessary to detect a significant effect on Sa/So ratio. Significant differences between control and treated ducks were observed after 4 days of treatment for ALAT and LDH and after 6 and 8 days for cholesterol and proteins concentrations. The minimum doses of FB1 required to determine an effect were assessed using three different methods. This approach reveals that FB1 has greater effects when it is ingested at a low dose for a long time than when ingested at a high dose for a short time. Although the minimum toxic dose of FB1 in ducks remains to be determined, this result must be considered in the context of chronic exposure to the toxin, not only in avian populations.
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Affiliation(s)
- S T Tran
- Department of Mycotoxicology, Veterinary School of Toulouse, 23 Chemin des Capelles, 31076 Toulouse, France
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46
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Meyer K, Mohr K, Bauer J, Horn P, Kovács M. Residue formation of fumonisin B1 in porcine tissues. FOOD ADDITIVES AND CONTAMINANTS 2003; 20:639-47. [PMID: 12888389 DOI: 10.1080/0265203031000119043] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The residues derived from the uptake of fumonisin B1, a toxic metabolite of Fusarium verticillioides frequently occurring in corn and corn products, were determined in growing pigs. After oral administration of 100 mg FB(1)/animal/day for 5-11 days, serum, bile, lung, liver, kidney, brain, spleen, pancreas, heart, muscle, eye, and fat samples were collected immediately and analysed by LC-MS. The highest values were measured in kidney (833 +/- 1329 microg kg(-1), mean +/- SD), liver (231 +/- 163 microg kg(-1)), lung (170 +/- 311 microg kg(-1)) and spleen (854 +/- 2212 microg kg(-1)). Muscle contained 26 +/- 41 microg kg(-1), while in fat only 2 +/- 3 microg kg(-1) were traceable. Despite the potential accumulation over extended feeding periods as well as the large variations in the residue formation of FB(1), a carry-over in edible tissues from swine was considered not to be of toxicological relevance.
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Affiliation(s)
- K Meyer
- Technische Universität München, Institute of Animal Hygiene, Freising, Germany.
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Zomborszky-Kovács M, Kovács F, Horn P, Vetési F, Repa I, Tornyos G, Tóth Á. Investigations into the time- and dose-dependent effect of fumonisin B1 in order to determine tolerable limit values in pigs. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0301-6226(02)00125-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Zomborszky-Kovács M, Vetési F, Horn P, Repa I, Kovács F. Effects of prolonged exposure to low-dose fumonisin B1 in pigs. JOURNAL OF VETERINARY MEDICINE. B, INFECTIOUS DISEASES AND VETERINARY PUBLIC HEALTH 2002; 49:197-201. [PMID: 12069274 DOI: 10.1046/j.1439-0450.2002.00519.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
From the point of view of human exposure, fumonisins (FB1, FB2, FB1, FB4), a relatively recently (1988) discovered and identified group of mycotoxins, represent one of the five most important mycotoxin groups causing human disease. In an earlier experiment studying the effects of relatively low doses (10, 20 and 40 p.p.m.) of FB1 in weaned piglets, it was established that the 4-week feeding of 10 p.p.m. (mg/kg feed) FB1 produced mild pulmonary oedema. This suggested the importance of studies with even lower doses of the toxin to determine the tolerable limits. The objective of this experiment was therefore to study the effects of prolonged (8-week) exposure to still lower concentrations (0, 1, 5 and 10 mg/kg feed) of FB1. The 8-week feeding of FB1 in low concentrations (1-10 p.p.m.) did not cause clinical signs and significant performance impairment in pigs, but rendered irreversible the chronic changes that had already developed in the animals in a dose-dependent manner. Dissection revealed pathological alterations of the lungs in one of the animals given 1 p.p.m. (n = 4), in two animals exposed to 5 p.p.m. (n = 5), and in three animals given 10 p.p.m. (n = 4). In all three treatment groups, proliferation of the connective tissue fibres, primarily of those around the lymphatic vessels, in the subpleural and interlobular connective tissue of the lungs, extending to the peribronchial and peribronchiolar areas, was seen. The results of this experiment call attention to the risk of prolonged low-dose toxin exposure, which has very important public health implications.
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Riley RT, Enongene E, Voss KA, Norred WP, Meredith FI, Sharma RP, Spitsbergen J, Williams DE, Carlson DB, Merrill AH. Sphingolipid perturbations as mechanisms for fumonisin carcinogenesis. ENVIRONMENTAL HEALTH PERSPECTIVES 2001; 109 Suppl 2:301-8. [PMID: 11359699 PMCID: PMC1240679 DOI: 10.1289/ehp.01109s2301] [Citation(s) in RCA: 110] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
There is a great deal of evidence that altered sphingolipid metabolism is associated with fumonisin-induced animal diseases including increased apoptotic and oncotic necrosis, and carcinogenesis in rodent liver and kidney. The biochemical consequences of fumonisin disruption of sphingolipid metabolism most likely to alter cell regulation are increased free sphingoid bases and their 1-phosphates, alterations in complex sphingolipids, and decreased ceramide (CER) biosynthesis. Because free sphingoid bases and CER can induce cell death, the fumonisin inhibition of CER synthase can inhibit cell death induced by CER but promote free sphingoid base-induced cell death. Theoretically, at any time the balance between the intracellular concentration of effectors that protect cells from apoptosis (decreased CER, increased sphingosine 1-phosphate) and those that induce apoptosis (increased CER, free sphingoid bases, altered fatty acids) will determine the cellular response. Because the balance between the rates of apoptosis and proliferation is important in tumorigenesis, cells sensitive to the proliferative effect of decreased CER and increased sphingosine 1-phosphate may be selected to survive and proliferate when free sphingoid base concentration is not growth inhibitory. Conversely, when the increase in free sphingoid bases exceeds a cell's ability to convert sphinganine/sphingosine to dihydroceramide/CER or their sphingoid base 1-phosphate, then free sphingoid bases will accumulate. In this case cells that are sensitive to sphingoid base-induced growth arrest will die and insensitive cells will survive. If the cells selected to die are normal phenotypes and the cells selected to survive are abnormal, then cancer risk will increase.
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Affiliation(s)
- R T Riley
- USDA-Agricultural Research Service, Athens, Georgia, USA.
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Zomborszky MK, Vetési F, Repa I, Kovács F, Bata A, Horn P, Tóth A, Romvári R. Experiment to determine limits of tolerance for fumonisin B1 in weaned piglets. JOURNAL OF VETERINARY MEDICINE. B, INFECTIOUS DISEASES AND VETERINARY PUBLIC HEALTH 2000; 47:277-86. [PMID: 10861196 DOI: 10.1046/j.1439-0450.2000.00343.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In Hungary almost 70% of mould-affected maize inspected since 1993 was found to be contaminated with fumonisin B1 (FB1) (mean 2.6-8.65 mg/kg; maximum 9.8-75.1 mg/kg), the degree of this contamination was found to increase from year to year (Fazekas et al., 1997b). In this experiment, in order to define tolerance limit values, the effect of exposing weaned piglets to FB1 in low doses over a 4-week period was examined. The experiment was performed with 20 weaned barrows of Danish Landrace breed. After a 5-day adaptation period cultures of the fungus Fusarium moniliforme were mixed into the animals' feed in concentrations that resulted in a daily intake of fumonisin B1 of 0, 10, 20 and 40 mg/kg feed. Feeding with the toxin was observed to exert no significant effect on body weight gain or feed consumption in the animals, no clinical signs were observed and no mortality traceable to toxic effects occurred. In computer tomography examinations performed in the second and fourth weeks mild and more severe pulmonary oedema was diagnosed in the experimental animals. The processes developing in the pulmonary parenchyma were corroborated by the mathematical and statistical evaluation procedures applied. The haematological parameters examined revealed no change attributable to toxic effects, while with respect to the biochemical parameters, an increase in aspartate aminotransferase (AST) activity dependent on dosage, indicating a pathological change in the liver, was ascertained in all three experimental groups. The free sphinganine to sphingosine ratio (SA/SO), which is regarded as the most sensitive bioindicator of fumonisin toxicosis, showed an increase proportionate to toxin concentration for all three dosages. Dissection revealed mild cases of pulmonary oedema in three of the animals given doses of 10 p.p.m. (n = 4), two mild and two severe cases in those exposed to 20 p.p.m. (n = 5), and severe cases in all five animals given 40 p.p.m. The oedema of non-inflammatory origin was confirmed by histopathological examinations. The findings of this experiment which indicate that in this study FB1 administered in substantially lower concentrations than those reported in the literature resulted in severe pathological changes, point to the importance of studies involving even lower doses.
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Affiliation(s)
- M K Zomborszky
- Pannon University of Agriculture Faculty of Animal Science, Kaposvár, Hungary
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