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Lumsangkul C, Tso KH, Fan YK, Chiang HI, Ju JC. Mycotoxin Fumonisin B 1 Interferes Sphingolipid Metabolisms and Neural Tube Closure during Early Embryogenesis in Brown Tsaiya Ducks. Toxins (Basel) 2021; 13:toxins13110743. [PMID: 34822527 PMCID: PMC8619080 DOI: 10.3390/toxins13110743] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/09/2021] [Accepted: 10/16/2021] [Indexed: 11/26/2022] Open
Abstract
Fumonisin B1 (FB1) is among the most common contaminants produced by Fusarium spp. fungus from corns and animal feeds. Although FB1 has been known to cause physical or functional defects of embryos in humans and several animal species such as Syrian hamsters, rabbits, and rodents, little is known about the precise toxicity to the embryos and the underlying mechanisms have not been fully addressed. The present study aimed to investigate its developmental toxicity and potential mechanisms of action on sphingolipid metabolism in Brown Tsaiya Ducks (BTDs) embryos. We examined the effect of various FB1 dosages (0, 10, 20 and 40 µg/embryo) on BTD embryogenesis 72 h post-incubation. The sphingomyelin content of duck embryos decreased (p < 0.05) in the highest FB1-treated group (40 µg). Failure of neural tube closure was observed in treated embryos and the expression levels of a neurulation-related gene, sonic hedgehog (Shh) was abnormally decreased. The sphingolipid metabolism-related genes including N-acylsphingosine amidohydrolase 1 (ASAH1), and ceramide synthase 6 (CERS6) expressions were altered in the treated embryos compared to those in the control embryos. Apparently, FB1 have interfered sphingolipid metabolisms by inhibiting the functions of ceramide synthase and folate transporters. In conclusion, FB1-caused developmental retardation and abnormalities, such as neural tube defects in Brown Tsaiya Duck embryos, as well as are partly mediated by the disruption of sphingolipid metabolisms.
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Affiliation(s)
- Chompunut Lumsangkul
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand;
- Science and Technology Research Institute, Chiang Mai University, Chiang Mai 50200, Thailand
- Department of Animal Science, National Chung Hsing University, Taichung 40227, Taiwan; (K.-H.T.); (Y.-K.F.)
| | - Ko-Hua Tso
- Department of Animal Science, National Chung Hsing University, Taichung 40227, Taiwan; (K.-H.T.); (Y.-K.F.)
| | - Yang-Kwang Fan
- Department of Animal Science, National Chung Hsing University, Taichung 40227, Taiwan; (K.-H.T.); (Y.-K.F.)
| | - Hsin-I Chiang
- Department of Animal Science, National Chung Hsing University, Taichung 40227, Taiwan; (K.-H.T.); (Y.-K.F.)
- Center for the Integrative and Evolutionary Galliformes Genomics, National Chung Hsing University, Taichung 40227, Taiwan
- Correspondence: (H.-I.C.); (J.-C.J.); Tel.: +886-4-2287-0613 (H.-I.C. & J.-C.J.); Fax: +886-4-2286-0265 (H.-I.C. & J.-C.J.)
| | - Jyh-Cherng Ju
- Department of Animal Science, National Chung Hsing University, Taichung 40227, Taiwan; (K.-H.T.); (Y.-K.F.)
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung 40402, Taiwan
- Translational Medicine Research Center, China Medical University Hospital, Taichung 40402, Taiwan
- Department of Bioinformatics and Medical Engineering, College of Information and Electrical Engineering, Asia University, Taichung 41354, Taiwan
- Correspondence: (H.-I.C.); (J.-C.J.); Tel.: +886-4-2287-0613 (H.-I.C. & J.-C.J.); Fax: +886-4-2286-0265 (H.-I.C. & J.-C.J.)
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Gilbert-Sandoval I, Wesseling S, Rietjens IMCM. Occurrence and Probabilistic Risk Assessment of Fumonisin B1, Fumonisin B2 and Deoxynivalenol in Nixtamalized Maize in Mexico City. Toxins (Basel) 2020; 12:toxins12100644. [PMID: 33036310 PMCID: PMC7600745 DOI: 10.3390/toxins12100644] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 09/28/2020] [Accepted: 10/04/2020] [Indexed: 12/31/2022] Open
Abstract
Fumonisins (FB1+FB2) and deoxynivalenol (DON) are mycotoxins produced by Fusarium species that might be present in maize and maize products. Knowledge on their occurrence in nixtamalized maize from Mexico together with an accompanying risk assessment are scarce, while nixtamalized maize is an important food in Mexico. This study presents the occurrence of FB1 + FB2 and DON in nixtamalized maize samples collected in Mexico City and analyses their distribution and resulting estimated daily intake for Mexican consumers by a probabilistic approach using a two-dimensional Monte-Carlo simulation. The results obtained reveal that for FB1 + FB2, 47% of the Mexican men and 30% of the Mexican women might exceed the provisional tolerable daily intake (PMTDI) of 2 µg/kg bw/day for fumonisins and for DON, 9% of men and 5% of women would be exceeding the PMTDI of 1 µg/kg bw/day, corresponding to the high consumers. The results raise a flag for risk managers in Mexico, to consider regulations and interventions that lower mycotoxin levels in nixtamalized maize for human consumption.
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Namulawa VT, Mutiga S, Musimbi F, Akello S, Ngángá F, Kago L, Kyallo M, Harvey J, Ghimire S. Assessment of Fungal Contamination in Fish Feed from the Lake Victoria Basin, Uganda. Toxins (Basel) 2020; 12:toxins12040233. [PMID: 32272644 PMCID: PMC7232351 DOI: 10.3390/toxins12040233] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/28/2020] [Accepted: 04/02/2020] [Indexed: 12/17/2022] Open
Abstract
The emergence of commercial fish farming has stimulated the establishment of fish feed factories in Uganda. However, no information is available on the safety of the feed, mainly due to lack of mycotoxin testing facilities and weak regulatory systems. A study was carried out to examine fungal colonization and mycotoxin contamination in fish feed samples (n = 147) of different types collected from nine fish farms (n = 81) and seven fish feed factories (n = 66) in the Lake Victoria Basin (LVB). Fungi were isolated in potato dextrose agar, grouped into morphotypes and representative isolates from each morphotype were identified based on the internal transcribed spacer (ITS) region of ribosomal DNA sequences. Aflatoxin B1 (AFB1) and total fumonisin (combinations of B1, B2 and B3; hereinafter named fumonisin) levels in feed samples were determined by enzyme-linked immunosorbent assay (ELISA). A wide range of fungi, including toxigenic Aspergillus flavus and Fusarium verticillioides, were isolated from the fish feed samples. AFB1 was detected in 48% of the factory samples and in 63% of the farm samples, with toxin levels <40 and >400 µg/kg, respectively. Similarly, 31% of the factory samples and 29% of the farm samples had fumonisin contamination ranging between 0.1 and 4.06 mg/kg. Pellets and powder had higher mycotoxin contamination compared to other commercially available fish feed types. This study shows AFB1 as a potential fish feed safety issue in the LVB and suggests a need for more research on mycotoxin residues in fish fillets.
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Affiliation(s)
- Victoria Tibenda Namulawa
- National Agricultural Research Organization, Aquaculture Research & Development Center, P.O. Box 530, Kampala 00256, Uganda;
- Biosciences eastern and central Africa-International Livestock Research Institute (BecA–ILRI) Hub, P.O. Box 30709-00100, Nairobi 00100, Kenya; (S.M.); (S.A.); (F.N.); (L.K.); (M.K.); (J.H.); (S.G.)
- Correspondence:
| | - Samuel Mutiga
- Biosciences eastern and central Africa-International Livestock Research Institute (BecA–ILRI) Hub, P.O. Box 30709-00100, Nairobi 00100, Kenya; (S.M.); (S.A.); (F.N.); (L.K.); (M.K.); (J.H.); (S.G.)
- Department of Plant Pathology, University of Arkansas, Fayetteville, NC 72701, USA
| | - Fred Musimbi
- National Agricultural Research Organization, Aquaculture Research & Development Center, P.O. Box 530, Kampala 00256, Uganda;
| | - Sundy Akello
- Biosciences eastern and central Africa-International Livestock Research Institute (BecA–ILRI) Hub, P.O. Box 30709-00100, Nairobi 00100, Kenya; (S.M.); (S.A.); (F.N.); (L.K.); (M.K.); (J.H.); (S.G.)
| | - Fredrick Ngángá
- Biosciences eastern and central Africa-International Livestock Research Institute (BecA–ILRI) Hub, P.O. Box 30709-00100, Nairobi 00100, Kenya; (S.M.); (S.A.); (F.N.); (L.K.); (M.K.); (J.H.); (S.G.)
| | - Leah Kago
- Biosciences eastern and central Africa-International Livestock Research Institute (BecA–ILRI) Hub, P.O. Box 30709-00100, Nairobi 00100, Kenya; (S.M.); (S.A.); (F.N.); (L.K.); (M.K.); (J.H.); (S.G.)
| | - Martina Kyallo
- Biosciences eastern and central Africa-International Livestock Research Institute (BecA–ILRI) Hub, P.O. Box 30709-00100, Nairobi 00100, Kenya; (S.M.); (S.A.); (F.N.); (L.K.); (M.K.); (J.H.); (S.G.)
| | - Jagger Harvey
- Biosciences eastern and central Africa-International Livestock Research Institute (BecA–ILRI) Hub, P.O. Box 30709-00100, Nairobi 00100, Kenya; (S.M.); (S.A.); (F.N.); (L.K.); (M.K.); (J.H.); (S.G.)
- Feed the Future Innovation Lab for the Reduction of Post-Harvest Loss, and Department of Plant Pathology; Kansas State University, Manhattan, KS 66506, USA
| | - Sita Ghimire
- Biosciences eastern and central Africa-International Livestock Research Institute (BecA–ILRI) Hub, P.O. Box 30709-00100, Nairobi 00100, Kenya; (S.M.); (S.A.); (F.N.); (L.K.); (M.K.); (J.H.); (S.G.)
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Czembor E, Stępień Ł, Waśkiewicz A. Effect of Environmental Factors on Fusarium Species and Associated Mycotoxins in Maize Grain Grown in Poland. PLoS One 2015; 10:e0133644. [PMID: 26225823 PMCID: PMC4520617 DOI: 10.1371/journal.pone.0133644] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 06/30/2015] [Indexed: 11/19/2022] Open
Abstract
Maize is one of the most important crops and Poland is the fifth largest producing country in Europe. Diseases caused by Fusarium spp. can affect the yield and grain quality of maize because of contamination with numerous mycotoxins produced by these fungi. The present study was performed to identify the prevailing Fusarium species and the environmental factors affecting their frequencies and the contamination of grain with the main mycotoxins deoxynivalenol (DON), zearalenone (ZON) and fumonisin B1 (FB1). Thirty kernel samples were collected in three locations in 2011 and in seven locations in 2012 from three hybrids. On average, 25.24% kernels were colonized by Fusarium spp. (424 strains were isolated). Fusarium verticillioides and F. temperatum were the most prevalent species, F. subglutinans, F. proliferatum and F. graminearum were in minor abundance. In total, 272 isolates of F. verticillioides and 81 isolates of F. temperatum were identified. Fusarium temperatum frequency ranged from 1.70% to 28.57% and differences between locations were significant. Fumonisin B1 was found in all tested samples. DON was found in 66.67% and ZON in 43.33% of samples. Rainfall amount positively affected F. temperatum and F. subglutinans frequency in opposite to mean temperatures in July. On the other hand, relationships between frequency of these species and historical data from 1950-2000 for annual temperature range were negative in contrast to the coldest quarter temperatures.
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Affiliation(s)
- Elżbieta Czembor
- Grasses and Legumes Department, Plant Breeding and Acclimatization Institute—NRI, Radzików, Poland
| | - Łukasz Stępień
- Department of Pathogen Genetics and Plant Resistance, Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Poland
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Burger HM, Lombard MJ, Shephard GS, Danster-Christians N, Gelderblom WCA. Development and evaluation of a sensitive mycotoxin risk assessment model (MYCORAM). Toxicol Sci 2014; 141:387-97. [PMID: 24980263 PMCID: PMC4833022 DOI: 10.1093/toxsci/kfu134] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 06/20/2014] [Indexed: 11/13/2022] Open
Abstract
The differential risk of exposure to fumonisin (FB), deoxynivalenol (DON), and zearalenone (ZEA) mycotoxins to the South African population, residing in the nine Provinces was assessed during a cross-sectional grain consumer survey. The relative per capita maize intake (g/day) was stratified by gender, ethnicity, and Province and the probable daily intake (PDI) for each mycotoxin (ng/kg body weight/day) calculated utilizing SPECIAL and SUPER dry milled maize fractions representing different exposure scenarios. Men consumed on an average more maize (173 g/day) than women (142 g/day) whereas the black African ethnic group had the highest intake (279 g/day) followed by the Colored group (169 g/day) with the Asian/Indian and White groups consuming lower quantities of 101 and 80 g/day, respectively. The estimated mean PDIs for the various subgroups and Provinces, utilizing the different dry milled maize fractions, were below the provisional maximum tolerable daily intake (PMTDI) for each mycotoxin. A distinct and more sensitive mycotoxin risk assessment model (MYCORAM) for exposure, stratified by Province and ethnicity were developed utilizing specific maize intake increments (g/kg body weight/day) that provides information on the percentage of the population exposed above the PMTDI for each mycotoxin. Evaluation of the MYCORAM utilizing commercial and EXPERIMENTALLY DERIVED: SPECIAL milling fractions, containing predefined mycotoxins levels, predicts the percentage of maize consumers exposed above the respective PMTDI. Safety modeling using the MYCORAM could also predict a maximum tolerated level adequate to safeguard all South African maize consumers including the most vulnerable groups.
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Affiliation(s)
- Hester-Mari Burger
- Institute of Biomedical and Microbial Biotechnology, Cape Peninsula University of Technology, PO Box 1906, Bellville 7535, South Africa Department of Biochemistry, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
| | - Martani J Lombard
- School of Physiology, Nutrition and Consumer Sciences: Nutrition, Faculty of Health Sciences, Potchefstroom Campus, North-West University, Private Bag X6001, Potchefstroom 2520, South Africa
| | - Gordon S Shephard
- Institute of Biomedical and Microbial Biotechnology, Cape Peninsula University of Technology, PO Box 1906, Bellville 7535, South Africa
| | - Natasha Danster-Christians
- Department Agricultural and Food Sciences, Programme: Consumer Sciences: Food and Nutrition, Cape Peninsula University of Technology, PO Box 1906, Bellville 7535, South Africa
| | - Wentzel C A Gelderblom
- Institute of Biomedical and Microbial Biotechnology, Cape Peninsula University of Technology, PO Box 1906, Bellville 7535, South Africa Department of Biochemistry, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
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Kimanya ME, De Meulenaer B, Van Camp J, Baert K, Kolsteren P. Strategies to reduce exposure of fumonisins from complementary foods in rural Tanzania. Matern Child Nutr 2012; 8:503-11. [PMID: 22044455 PMCID: PMC6860554 DOI: 10.1111/j.1740-8709.2011.00337.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Feeding infants with maize can expose them to fumonisin mycotoxins. We assessed fumonisin exposure from complementary foods in rural Tanzania and determined strategies to reduce the exposure. We conducted a cross-sectional study in four villages of Tarakea division, Northern Tanzania. We used a repeat 24-hour dietary recall to collect data of maize consumption as complementary food for 254 infants aged 6-8 months. Fumonisin concentrations in the maize were also estimated. Fumonisin exposure was assessed using @risk analysis software. With the software, several maximum fumonisin contamination and maize consumption patterns were combined in order to determine effective strategies for minimizing fumonisin exposure. Of the infants, 89% consumed maize at amounts up to 158g/person/day (mean; 43g/person/day±28). The maize was contaminated with fumonisins at levels up to 3201µgkg(-1) . Risk of fumonisin intake above the provisional maximum tolerable daily limit of 2µgkg(-1) body weight was 15% (95% confidence interval; 10-19). The risk was minimized when the maximum contamination was set at 150µgkg(-1) . The risk was also minimized when the maximum consumption was set at 20g/child/day while keeping the maximum contamination at the European Union (EU) maximum tolerated limit (MTL) of 1000µgkg(-1) . Considering the economical and technological limitations of adopting good agricultural practices in rural Tanzania, it is practically difficult to reduce contamination in maize to 150µgkg(-1) . We suggest adoption of the EU MTL of 1000µgkg(-1) for fumonisins in maize and reduction, by replacement with another cereal, of the maize component in complementary foods to a maximum intake of 20g/child/day.
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Affiliation(s)
| | - Bruno De Meulenaer
- Department of Food Safety and Food Quality, Ghent University, Ghent, Belgium
| | - John Van Camp
- Department of Food Safety and Food Quality, Ghent University, Ghent, Belgium
| | - Katleen Baert
- Department of Food Safety and Food Quality, Ghent University, Ghent, Belgium
| | - Patrick Kolsteren
- Department of Food Safety and Food Quality, Ghent University, Ghent, Belgium
- Nutrition and Child Health Unit, Department of Public Health, Prince Leopold Institute of Tropical Medicine, Antwerpen, Belgium
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Pósa R, Donkó T, Bogner P, Kovács M, Repa I, Magyar T. Interaction of Bordetella bronchiseptica, Pasteurella multocida, and fumonisin B1 in the porcine respiratory tract as studied by computed tomography. Can J Vet Res 2011; 75:176-182. [PMID: 22210993 PMCID: PMC3122966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Accepted: 09/28/2010] [Indexed: 05/31/2023]
Abstract
The interaction of Bordetella bronchiseptica, toxigenic Pasteurella multocida serotype D, and the mycotoxin fumonisin B(1) (FB(1)) was studied. On day 0 of the experiment, 28 artificially reared 3-day-old piglets were divided into 4 groups (n = 7 each): a control group (A), a group fed FB(1) toxin (B), a group infected with the 2 pathogens (C), and a group infected with the 2 pathogens and fed FB(1) toxin (D). The B. bronchiseptica infection [with 10(6) colony-forming units (CFU)/mL] was performed on day 4 and the P. multocida infection (with 10(8) CFU/mL) on day 16. From day 16 a Fusarium verticillioides fungal culture (dietary FB(1) toxin content 10 mg/kg) was mixed into the feed of groups B and D. In groups C and D, clinical signs including mild serous nasal discharge, sneezing, panting, and hoarseness appeared from day 4, and then from day 16 some piglets had coughing and dyspnea as well. Computed tomography (CT) performed on day 16 demonstrated lung lesions attributable to colonization by B. bronchiseptica in the infected groups. By day 25 the number of piglets exhibiting lesions had increased, and the lesions appeared as well-circumscribed, focal changes characterized by a strong density increase in the affected areas of the lungs. The gross pathological findings confirmed the results obtained by CT. These results indicate that, when combined with dual infection by B. bronchiseptica and P. multocida, dietary exposure of pigs to FB(1) toxin raises the risk of pneumonia and increases the extent and severity of the pathological changes.
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Affiliation(s)
| | | | | | | | | | - Tibor Magyar
- Address all correspondence to Dr. Tibor Magyar; telephone: +36 1 467 4092; fax: +36 467 4086; e-mail:
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Kovács M. [Nutritional health aspects of mycotoxins]. Orv Hetil 2004; 145:1739-46. [PMID: 15493122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Mycotoxins produced by mould fungi can enter into the human food chain directly through foods of plant origin (cereal grains), consumer goods (coffee and bear) and indirectly through foods of animal origin (kidney, liver, milk and eggs). Mycotoxins occur in small amount in the foods; however their continuous intake even in microdoses can result in accumulation in the organism. Synergic effects of the mycotoxins as well as their possible additive multi-toxic effects seem to be especially dangerous. Mycotoxin problems are very important in Hungary because these natural toxins occur mainly in those cereals (e.g. wheat, maize) that amount to high proportion of the sowing area in Hungary and provide the main foods to the inhabitants. Public health risks of the toxins accumulating in the human and animal bodies during the long term consumption of the mycotoxins containing foods--even in small doses--have not been evaluated yet as thoroughly as their importance would require. However, there are more and more direct and indirect expressions of the danger resulting from the toxins. The most frequently observed human health effects are carcinogen effects (aflatoxin, ochratoxin A, fumonisins, patulin); effects causing developmental abnormalities (zearalenon, ochratoxin); effects harmful to the reproduction (zearalenon, and trichotecenes), effects decreasing the resistance; immunosuppressive effects (trichotecenes), and effects causing injury of the nervous system (ochratoxin A, fumonisins). Prevention of the injury of the health caused by mycotoxins can be completed by joint and integrated activity of the various disciplines only and requires a comprehensive interdisciplinary cooperation. This paper gives a discussion on health injuring effects of the most frequently occurring mycotoxins that are very important from human health aspects in Hungary; on their occurrence in the foods and on their human risk.
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Minervini F, Fornelli F, Flynn KM. Toxicity and apoptosis induced by the mycotoxins nivalenol, deoxynivalenol and fumonisin B1 in a human erythroleukemia cell line. Toxicol In Vitro 2004; 18:21-8. [PMID: 14630058 DOI: 10.1016/s0887-2333(03)00130-9] [Citation(s) in RCA: 118] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The toxicity of the mycotoxins nivalenol (NIV), deoxynivalenol (DON) and fumonisin B1 (FB1) were studied in the K562 human erythroleukemia cell line using the Trypan Blue, MTT and BrdU uptake analyses of cytotoxicity, cell metabolism and cell proliferation, respectively. Nuclear staining with propidium iodide and DNA analysis by flow cytometry were used to identify apoptosis and cell cycle distribution. By the MTT and BrdU tests, both NIV and DON were significantly more toxic than FB1 by at least one order of magnitude, with ID50s ranging from 0.5 microM for NIV to 70 microM for FB1. The MTT test indicated that NIV was significantly (approximately four times) more toxic than DON. In contrast, the Trypan Blue test did not reveal any effects of mycotoxin exposure suggesting that, at the concentrations tested, NIV, DON and FB1 did not induce cytotoxicity through plasma membrane damage. Cell cycle analysis suggested apoptotic cytotoxicity, revealing 100% cellular debris at the highest concentrations of NIV and DON and approximately 2.9 times more debris than control at the highest FB1 concentration. Morphological evidence of apoptosis was related to the toxicity of the substances, such that the more toxic NIV and DON resulted in more late stage apoptotic events than FB1. This study suggests that human blood cells are sensitive to mycotoxin exposure, that NIV is more toxic than DON which is more toxic than FB1, and that DNA damage and apoptosis rather than plasma membrane damage and necrosis may be responsible for the observed cytotoxicity.
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Affiliation(s)
- F Minervini
- Istituto di Scienze delle Produzioni Alimentari, Consiglio Nazionale delle Ricerche, Viale Einaudi, 51, 70125 Bari,
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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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