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Jaćević V, Dumanović J, Alomar SY, Resanović R, Milovanović Z, Nepovimova E, Wu Q, Franca TCC, Wu W, Kuča K. Research update on aflatoxins toxicity, metabolism, distribution, and detection: A concise overview. Toxicology 2023; 492:153549. [PMID: 37209941 DOI: 10.1016/j.tox.2023.153549] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 05/07/2023] [Accepted: 05/17/2023] [Indexed: 05/22/2023]
Abstract
Serious health risks associated with the consumption of food products contaminated with aflatoxins (AFs) are worldwide recognized and depend predominantly on consumed AF concentration by diet. A low concentration of aflatoxins in cereals and related food commodities is unavoidable, especially in subtropic and tropic regions. Accordingly, risk assessment guidelines established by regulatory bodies in different countries help in the prevention of aflatoxin intoxication and the protection of public health. By assessing the maximal levels of aflatoxins in food products which are a potential risk to human health, it's possible to establish appropriate risk management strategies. Regarding, a few factors are crucial for making a rational risk management decision, such as toxicological profile, adequate information concerning the exposure duration, availability of routine and some novel analytical techniques, socioeconomic factors, food intake patterns, and maximal allowed levels of each aflatoxin in different food products which may be varied between countries.
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Affiliation(s)
- Vesna Jaćević
- Department for Experimental Pharmacology and Toxicology, National Poison Control Centre, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia; Medical Faculty of the Military Medical Academy, University of Defence, Crnotravska 17, 11000 Belgrade, Serbia; Department of Chemistry, Faculty of Science, University of Hradec Kralove, Rokitanského 62, 500 03 Hradec Králové, Czech Republic.
| | - Jelena Dumanović
- Medical Faculty of the Military Medical Academy, University of Defence, Crnotravska 17, 11000 Belgrade, Serbia; Department of Analytical Chemistry, Faculty of Chemistry, University of Belgrade, 11158 Belgrade, Serbia
| | - Suliman Y Alomar
- King Saud University, College of Science, Zoology Department, Riyadh, 11451, Saudi Arabia
| | - Radmila Resanović
- Faculty of Veterinary Medicine, University of Belgrade, Bulevar Oslobođenja 18, 11000 Belgrade, Serbia
| | - Zoran Milovanović
- Special Police Unit, Ministry of Interior, Trebevićka 12/A, 11 030 Belgrade, Serbia
| | - Eugenie Nepovimova
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Rokitanského 62, 500 03 Hradec Králové, Czech Republic
| | - Qinghua Wu
- College of Life Science, Yangtze University, 1 Nanhuan Road, 434023 Jingzhou, Hubei, China; Department of Chemistry, Faculty of Science, University of Hradec Kralove, Rokitanského 62, 500 03 Hradec Králové, Czech Republic
| | - Tanos Celmar Costa Franca
- Laboratory of Molecular Modeling Applied to the Chemical and Biological Defense, Military Institute of Engineering, Praça General Tibúrcio 80, Rio de Janeiro, RJ 22290-270, Brazil; Department of Chemistry, Faculty of Science, University of Hradec Kralove, Rokitanského 62, 500 03 Hradec Králové, Czech Republic
| | - Wenda Wu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China; MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; Department of Chemistry, Faculty of Science, University of Hradec Kralove, Rokitanského 62, 500 03 Hradec Králové, Czech Republic
| | - Kamil Kuča
- Biomedical Research Center, University Hospital Hradec Kralove, 50005, Hradec Kralove, Czech Republic; Department of Chemistry, Faculty of Science, University of Hradec Kralove, Rokitanského 62, 500 03 Hradec Králové, Czech Republic
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Deng Y, Chen H, Wu Y, Yuan J, Shi Q, Tong P, Gao J. Aflatoxin B 1 can aggravate BALB/c mice allergy to ovalbumin through changing their Th2 cells immune responses. Toxicon 2023; 228:107121. [PMID: 37062343 DOI: 10.1016/j.toxicon.2023.107121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 04/07/2023] [Accepted: 04/08/2023] [Indexed: 04/18/2023]
Abstract
Foods contaminated by Aflatoxin B1 (AFB1) frequently happen in the world and can cause a lot healthy damages to human beings, meanwhile, some of these foods are easily irritate food allergy. To investigate the effect of AFB1 exposure on food allergy, three doses of AFB1 were set, including 0.3 μg/kg · bw (LDAF), 7.5 μg/kg · bw (MDAF), and 100.0 μg/kg · bw (HDAF), respectively; food allergy model was constructed by the BALB/c mice allergy to ovalbumin (OVA). The changes of titer in OVA-specific immunoglobulin E (IgE), IgG, IgG1, IgG2a, as well as level of the mMCP-1 in sera were determined by enzyme linked immunosorbent assay (ELISA), respectively; the levels of interleukin (IL-4, IL-5, IL-13) and interferon (IFN)-γ in spleen were separately assessed using ELISA kits, and their relative genes expression were verified by Real-time fluorescence quantitative PCR (Q-PCR); the population of Th1/Th2/Treg cells were analyzed by flow cytometry. Results showed that when OVA-allergic mice were exposed to AFB1, the production of OVA-specific IgE, IL-4, IL-5 and IL-13, and mMCP-1 were all increased, whereas the level of IFN-γ was decreased; the Th1/Th2 balance was disrupted and the development of Th cells tilted to the Th2 phenotype. The study would contribute to further understand the risk of fungal toxins in food allergy.
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Affiliation(s)
- Yujue Deng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China; College of Food Science & Technology, Nanchang University, Nanchang, 330031, PR China
| | - Hongbing Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China; Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang, 330047, PR China
| | - Yong Wu
- Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang, 330047, PR China
| | - Jin Yuan
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China; College of Food Science & Technology, Nanchang University, Nanchang, 330031, PR China
| | - Qiang Shi
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China; College of Food Science & Technology, Nanchang University, Nanchang, 330031, PR China
| | - Ping Tong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
| | - Jinyan Gao
- College of Food Science & Technology, Nanchang University, Nanchang, 330031, PR China.
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Otter A, Schock A, Payne J. A form of hepatogenous copper poisoning in fattening cattle associated with the ingestion of mouldy straw. VETERINARY RECORD CASE REPORTS 2023. [DOI: 10.1002/vrc2.592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Arthur Otter
- FRCVS Animal and Plant Health Agency Shrewsbury Shrewsbury UK
| | | | - Jo Payne
- MRCVS Animal and Plant Health Agency Sutton Bonington Loughborough UK
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Humic Acids Preparation, Characterization, and Their Potential Adsorption Capacity for Aflatoxin B 1 in an In Vitro Poultry Digestive Model. Toxins (Basel) 2023; 15:toxins15020083. [PMID: 36828398 PMCID: PMC9962053 DOI: 10.3390/toxins15020083] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/11/2023] [Accepted: 01/14/2023] [Indexed: 01/19/2023] Open
Abstract
Vermicompost was used for humic acid (HA) preparation, and the adsorption of aflatoxin B1 (AFB1) was investigated. Two forms of HA were evaluated, natural HA and sodium-free HA (SFHA). As a reference, a non-commercial zeolitic material was employed. The adsorbents were characterized by attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), energy-dispersive X-ray spectroscopy (EDS), zeta potential (ζ-potential), scanning electron microscopy (SEM), and point of zero charge (pHpzc). The adsorbent capacity of the materials when added to an AFB1-contaminated diet (100 µg AFB1/kg) was evaluated using an in vitro model that simulates the digestive tract of chickens. Characterization results revealed the primary functional groups in HA and SFHA were carboxyl and phenol. Furthermore, adsorbents have a highly negative ζ-potential at the three simulated pH values. Therefore, it appears the main influencing factors for AFB1 adsorption are electrostatic interactions and hydrogen bonding. Moreover, the bioavailability of AFB1 in the intestinal section was dramatically decreased when sorbents were added to the diet (0.2%, w/w). The highest AFB1 adsorption percentages using HA and SFHA were 97.6% and 99.7%, respectively. The zeolitic material had a considerable adsorption (81.5%). From these results, it can be concluded that HA and SFHA from vermicompost could be used as potential adsorbents to remove AFB1 from contaminated feeds.
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Vudathala D, Cummings M, Tkachenko A, Guag J, Reimschuessel R, Murphy AL. A Lateral Flow Method for Aflatoxin B1 in Dry Dog Food: An Inter-Laboratory Trial. J AOAC Int 2021; 104:555-561. [PMID: 33479742 DOI: 10.1093/jaoacint/qsaa175] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 12/13/2020] [Accepted: 12/13/2020] [Indexed: 11/14/2022]
Abstract
BACKGROUND Dogs are highly susceptible to aflatoxins, the mycotoxins which most commonly cause acute dog illnesses and deaths following the consumption of contaminated food. OBJECTIVE In this study, a screening method to detect aflatoxin B1 (AFB1) in dry dog food was further evaluated at the FDA action level of 20 ng/g. A fourth-round multi-laboratory trial was performed. In contrast to the previous work, a different source of dog food was used in the multi-laboratory trial and more participants were involved. METHOD The tested lateral flow method employs a modified procedure of the "Rosa® AFQ-Fast Test Kit" from Charm Sciences Inc. A total of 60 unfortified blank study samples, 220 study samples fortified at 20 ng/g, and 80 study samples fortified at 9-11 ng/g were prepared by an independent party and analyzed in 10 collaborating laboratories in a blinded manner. RESULTS The pass rates were 98.3 and 94.5% for unfortified and 20 ng/g fortified study samples, respectively. CONCLUSIONS The method is suitable for aflatoxin B1 screening at the FDA action level of 20 ng/g in a complex matrix such as dry dog food. HIGHLIGHTS This work completes extensive method performance evaluation through four rounds of multi-laboratory trials.
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Affiliation(s)
- Daljit Vudathala
- University of Pennsylvania, School of Veterinary Medicine, Department of Pathobiology, PADLS New Bolton Center Toxicology Laboratory, Kennett Square, Pennsylvania, 19348, USA
| | - Margie Cummings
- University of Pennsylvania, School of Veterinary Medicine, Department of Pathobiology, PADLS New Bolton Center Toxicology Laboratory, Kennett Square, Pennsylvania, 19348, USA
| | - Andriy Tkachenko
- Center for Veterinary Medicine, Office of Research, Food and Drug Administration, Laurel, Maryland, 20708, USA
| | - Jake Guag
- Center for Veterinary Medicine, Office of Research, Food and Drug Administration, Laurel, Maryland, 20708, USA
| | - Renate Reimschuessel
- Center for Veterinary Medicine, Office of Research, Food and Drug Administration, Laurel, Maryland, 20708, USA
| | - And Lisa Murphy
- University of Pennsylvania, School of Veterinary Medicine, Department of Pathobiology, PADLS New Bolton Center Toxicology Laboratory, Kennett Square, Pennsylvania, 19348, USA
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Ma J, Liu Y, Guo Y, Ma Q, Ji C, Zhao L. Transcriptional Profiling of Aflatoxin B1-Induced Oxidative Stress and Inflammatory Response in Macrophages. Toxins (Basel) 2021; 13:401. [PMID: 34199697 PMCID: PMC8228812 DOI: 10.3390/toxins13060401] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 05/28/2021] [Accepted: 05/28/2021] [Indexed: 12/12/2022] Open
Abstract
Aflatoxin B1 (AFB1) is a highly toxic mycotoxin that causes severe suppression of the immune system of humans and animals, as well as enhances reactive oxygen species (ROS) formation, causing oxidative damage. However, the mechanisms underlying the ROS formation and immunotoxicity of AFB1 are poorly understood. This study used the mouse macrophage RAW264.7 cell line and whole-transcriptome sequencing (RNA-Seq) technology to address this knowledge-gap. The results show that AFB1 induced the decrease of cell viability in a dose- and time-dependent manner. AFB1 also significantly increased intracellular productions of ROS and malondialdehyde and decreased glutathione levels. These changes correlated with increased mRNA expression of NOS2, TNF-α and CXCL2 and decreased expression of CD86. In total, 783 differentially expressed genes (DEGs) were identified via RNA-Seq technology. KEGG analysis of the oxidative phosphorylation pathway revealed that mRNA levels of ND1, ND2, ND3, ND4, ND4L, ND5, ND6, Cyt b, COX2, ATPeF0A and ATPeF08 were higher in AFB1-treated cells than control cells, whereas 14 DEGs were downregulated in the AFB1 group. Furthermore, seven immune regulatory pathways mediated by oxidative stress were identified by KEGG analysis. Altogether, these data suggest that AFB1 induces oxidative stress in macrophages via affecting the respiratory chain, which leads to the activation of several signaling pathways related to the inflammatory response.
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Affiliation(s)
| | | | | | | | | | - Lihong Zhao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (J.M.); (Y.L.); (Y.G.); (Q.M.); (C.J.)
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Aflatoxicosis of crucians: experimental treatment and biological value of fish. EUREKA: LIFE SCIENCES 2021. [DOI: 10.21303/2504-5695.2021.001754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The aim of this study was to investigate a possibility to decrease a toxic influence of aflatoxin on the fish organism and veterinary-sanitary evaluation of fish, fed by a pure fodder, aflatoxin and ketoconazole+aflatoxin.
Fish aflatoxicoses cause essential losses at fish growing using industrial production technologies. It is characterized by decreasing weight gains and increasing kill of commodity fish, worsening fodder conversion. Farmers often use fodders of own production, without conducting laboratory studies, and don’t know about aflatoxins. At the same time because of different reasons, first of all economic ones, they don’t use adsorbents for decreasing the negative influence of aflatoxins on the fish organism. Their use doesn’t guarantee 100 % fish resistance to micotoxicoses and correspondingly product safety for a consumer. Fish, received aflatoxins with food, is dangerous as a food product for humans and animals. Aflatoxins are very stable in the environment, so even thermal processing doesn’t exceed risk of aflatoxin contamination.
The article presents a possibility of effective treatment of fish at aflatoxicosis. It is known, that aflatoxin beyond cells is not dangerous. Its activation takes place within a cell by the enzyme system cytochrome Р-450, forming an epoxide, in which result the aflatoxin inclusion complex with DNA forms in the kernel. The veterinary preparation “Ketoconazole” inhibits cytochrome enzymes Р-450, so aflatoxin activation within a cell doesn’t take place, epoxides don’t form, DNA cells are not injured, aflatoxicosis doesn’t develop in fish that has been proved experimentally. The veterinary-sanitary mark of fish, treated for aflatoxicosis, is satisfactory.
The importance of this study is in fact that for today there is no developed effective method of fish aflatoxicosis treatment. An influence of aflatoxin on the crucian organism has not been studied experimentally
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Marimón Sibaja KV, Garcia SDO, Nogueira WV, de Oliveira FK, Badiale-Furlong E, Garda-Buffon J. Dietary Exposure Assessment of Aflatoxin M1 in Milk and Dairy Products of Latin America. FOOD REVIEWS INTERNATIONAL 2021. [DOI: 10.1080/87559129.2021.1880434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Karen Vanessa Marimón Sibaja
- Mycotoxin and Food Science Laboratory, Federal University of Rio Grande (FURG), Av. Itália Km 8, Campus Carreiros, Rio Grande, Brazil
| | - Sabrina De Oliveira Garcia
- Mycotoxin and Food Science Laboratory, Federal University of Rio Grande (FURG), Av. Itália Km 8, Campus Carreiros, Rio Grande, Brazil
| | - Wesclen Vilar Nogueira
- Mycotoxin and Food Science Laboratory, Federal University of Rio Grande (FURG), Av. Itália Km 8, Campus Carreiros, Rio Grande, Brazil
| | - Francine Kerstner de Oliveira
- Mycotoxin and Food Science Laboratory, Federal University of Rio Grande (FURG), Av. Itália Km 8, Campus Carreiros, Rio Grande, Brazil
| | - Eliana Badiale-Furlong
- Mycotoxin and Food Science Laboratory, Federal University of Rio Grande (FURG), Av. Itália Km 8, Campus Carreiros, Rio Grande, Brazil
| | - Jaqueline Garda-Buffon
- Mycotoxin and Food Science Laboratory, Federal University of Rio Grande (FURG), Av. Itália Km 8, Campus Carreiros, Rio Grande, Brazil
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Zingales V, Fernández-Franzón M, Ruiz MJ. Sterigmatocystin: Occurrence, toxicity and molecular mechanisms of action – A review. Food Chem Toxicol 2020; 146:111802. [DOI: 10.1016/j.fct.2020.111802] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 10/01/2020] [Accepted: 10/02/2020] [Indexed: 12/22/2022]
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Ghaemmaghami SS, Pashootan N, Razzaghi-Abyaneh M. Toxigenicity and phylogeny of Aspergillus section Flavi in poultry feed in Iran. Curr Med Mycol 2020; 6:22-29. [PMID: 32420504 PMCID: PMC7217249 DOI: 10.18502/cmm.6.1.2504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background and Purpose This study was conducted to evaluate the presence of aflatoxigenic strains and level of aflatoxin in poultry feed. Aflatoxigenic strains were investigated in corn and soybean meal as the ingredients of poultry feed, as well as in two types of commercial feed, namely pellet and mash. The gene sequencing was performed to identify the species of Aspergillus section Flavi. Materials and Methods All samples were randomly collected from feed storage silos located in Iran in 2018. The samples were cultured on specialized media for 2 weeks at 28ºC. Identification of Aspergillus section Flavi isolates was based on macro- and microscopic morphological criteria and molecular analysis. The thin-layer chromatography (TLC) was applied to confirm the aflatoxigenic isolates. In addition, the level of aflatoxin B1 (AFB1) produced by these isolates was determined by high-performance liquid chromatography. The strains were subjected to sequence analysis, and Bt2 PCR products were purified by the QIAquick PCR purification kit. At the final stage, the phylogenetic tree was built. Results Among 54 isolates identified as Aspergillus section Flavi, 20 (37%) isolates were found to produce aflatoxin at a range of 11.28±1.18 to 2239.92±92.26 µg/g fungal dry weight. The aflatoxigenic isolates had the frequencies of 45%, 40%, 10%, and 5% in the corn, pellet, soybean meal, and mash samples, respectively. Furthermore, the mean concentrations of AFB1 were significantly higher in the corn samples (707.04±39.05) than that of other poultry feed samples (P<0.05). A total of 34 (63%) isolates were detected as non-aflatoxigenic on the yeast extract-sucrose broth in TLC analysis. The toxigenic isolates produced the highest (2232.62±55.49) and lowest (11.28±1.18) levels of AFB1 in the corn samples, compared to other feedstuffs. Furthermore, the mean level of AFB1 in mash product was 554.09±10.36 µg/g, compared to a mean level of 229.22±11.09 µg/g in pellets. The isolates were randomly selected, sequenced, and then analyzed. Subsequently, the phylogenetic tree of Aspergillus section Flavi was plotted. Conclusion The process of converting raw ingredients to compound poultry feed is more hazardous when there is not enough time and temperature provided to eliminate aflatoxigenic isolates. Therefore, Aspergillus section Flavi in poultry feed can pose a threat to the poultry industry and poultry products, thereby affecting the health status of humans. Unprocessed/processed materials, such as corns and pelleted feed, need further monitoring, especially when conditions are not optimal for destroying the fungus.
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Affiliation(s)
- Seyed Soheil Ghaemmaghami
- Feed Hygienist, Institute of Agricultural Education and Extension, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
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Chen SW, Wang HT, Shih WY, Ciou YA, Chang YY, Ananda L, Wang SY, Hsu JT. Application of Zearalenone (ZEN)-Detoxifying Bacillus in Animal Feed Decontamination through Fermentation. Toxins (Basel) 2019; 11:E330. [PMID: 31181798 PMCID: PMC6628455 DOI: 10.3390/toxins11060330] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 06/05/2019] [Accepted: 06/06/2019] [Indexed: 11/17/2022] Open
Abstract
Zearalenone (ZEN) is an estrogenic mycotoxin which can cause loss in animal production. The aim of this study was to screen Bacillus strains for their ZEN detoxification capability and use a fermentation process to validate their potential application in the feed industry. In the high-level ZEN-contaminated maize (5 mg·kg-1) fermentation test, B2 strain exhibited the highest detoxification rate, removing 56% of the ZEN. However, B2 strain was not the strain with the highest ZEN detoxification in the culturing media. When B2 grew in TSB medium with ZEN, it had higher bacterial numbers, lactic acid, acetic acid, total volatile fatty acids, and ammonia nitrogen. The ZEN-contaminated maize fermented by B2 strain had better fermentation characteristics (lactic acid > 110 mmol·L-1; acetic acid < 20 mmol·L-1; pH < 4.5) than ZEN-free maize. Furthermore, B2 also had detoxification capabilities toward aflatoxins B1, deoxynivalenol, fumonisin B1, and T2 toxin. Our study demonstrated differences in screening outcome between bacterial culturing conditions and the maize fermentation process. This is important for the feed industry to consider when choosing a proper method to screen candidate isolates for the pretreatment of ZEN-contaminated maize. It appears that using the fermentation process to address the ZEN-contaminated maize problem in animal feed is a reliable choice.
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Affiliation(s)
- Shiau-Wei Chen
- Department of Animal Science and Technology, National Taiwan University, No. 50, Lane 155, Sec 3, Keelung Rd, Taipei 10673, Taiwan.
| | - Han-Tsung Wang
- Department of Animal Science and Technology, National Taiwan University, No. 50, Lane 155, Sec 3, Keelung Rd, Taipei 10673, Taiwan.
| | - Wei-Yuan Shih
- Animal Resource Center, National Taiwan University, No. 118, Lane 155, Sec 3, Keelung Rd, Taipei 10673, Taiwan.
| | - Yan-An Ciou
- Department of Animal Science and Technology, National Taiwan University, No. 50, Lane 155, Sec 3, Keelung Rd, Taipei 10673, Taiwan.
| | - Yu-Yi Chang
- Graduate Institute of Biotechnology, Chinese Culture University, No. 55, Hwa-Kang Rd, Taipei 11114, Taiwan.
| | - Laurensia Ananda
- Graduate Institute of Biotechnology, Chinese Culture University, No. 55, Hwa-Kang Rd, Taipei 11114, Taiwan.
| | - Shu-Yin Wang
- Graduate Institute of Biotechnology, Chinese Culture University, No. 55, Hwa-Kang Rd, Taipei 11114, Taiwan.
| | - Jih-Tay Hsu
- Department of Animal Science and Technology, National Taiwan University, No. 50, Lane 155, Sec 3, Keelung Rd, Taipei 10673, Taiwan.
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Reed KM, Mendoza KM, Coulombe RA. Altered Gene Response to Aflatoxin B 1 in the Spleens of Susceptible and Resistant Turkeys. Toxins (Basel) 2019; 11:toxins11050242. [PMID: 31035349 PMCID: PMC6562755 DOI: 10.3390/toxins11050242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 04/22/2019] [Accepted: 04/27/2019] [Indexed: 12/21/2022] Open
Abstract
Susceptibility and/or resistance to aflatoxin B1 (AFB1) is a threshold trait governed principally by glutathione S transferase (GST)-mediated detoxification. In poultry, domesticated turkeys are highly sensitive to AFB1, most likely due to dysfunction in hepatic GSTs. In contrast, wild turkeys are comparatively resistant to aflatoxicosis due to the presence of functional hepatic GSTAs and other possible physiological and immunological interactions. The underlying genetic basis for the disparate GST function in turkeys is unknown as are the broader molecular interactions that control the systemic response. This study quantifies the effects of dietary AFB1 on gene expression in the turkey spleen, specifically contrasting genetically distinct domesticated (DT, susceptible) and Eastern wild (EW, resistant) birds. Male turkey poults were subjected to a short-term AFB1 treatment protocol with feed supplemented with 320 ppb AFB1 beginning on day 15 of age and continuing for 14 days. Spleen tissues were harvested and subjected to deep RNA sequencing and transcriptome analysis. Analysis of differential gene expression found the effects of AFB1 treatment on the spleen transcriptomes considerably more prominent in the DT birds compared to EW. However, expression of the differentially expressed genes (DEGs) was directionally biased, with the majority showing higher expression in EW (i.e., down-regulation in DT). Significantly altered pathways included FXR/RXR and LXR/RXR activation, coagulation system, prothrombin activation, acute phase response, and atherosclerosis signaling. Differential extra-hepatic expression of acute phase protein genes was confirmed by quantitative real time PCR (qRT-PCR) in the original experiment and additional turkey lines. Results demonstrate that wild turkeys possess a capacity to more effectively respond to AFB1 exposure.
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Affiliation(s)
- Kent M Reed
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN 55108, USA.
| | - Kristelle M Mendoza
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN 55108, USA.
| | - Roger A Coulombe
- Department of Animal, Dairy and Veterinary Sciences, College of Agriculture, Utah State University, Logan, UT 84322, USA.
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Reed KM, Mendoza KM, Coulombe RA. Differential Transcriptome Responses to Aflatoxin B₁ in the Cecal Tonsil of Susceptible and Resistant Turkeys. Toxins (Basel) 2019; 11:toxins11010055. [PMID: 30669283 PMCID: PMC6357151 DOI: 10.3390/toxins11010055] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/08/2019] [Accepted: 01/14/2019] [Indexed: 12/22/2022] Open
Abstract
The nearly-ubiquitous food and feed-borne mycotoxin aflatoxin B1 (AFB1) is carcinogenic and mutagenic, posing a food safety threat to humans and animals. One of the most susceptible animal species known and thus a good model for characterizing toxicological pathways, is the domesticated turkey (DT), a condition likely due, at least in part, to deficient hepatic AFB1-detoxifying alpha-class glutathione S-transferases (GSTAs). Conversely, wild turkeys (Eastern wild, EW) are relatively resistant to the hepatotoxic, hepatocarcinogenic and immunosuppressive effects of AFB1 owing to functional gene expression and presence of functional hepatic GSTAs. This study was designed to compare the responses in gene expression in the gastrointestinal tract between DT (susceptible phenotype) and EW (resistant phenotype) following dietary AFB1 challenge (320 ppb for 14 days); specifically in cecal tonsil which functions in both nutrient absorption and gut immunity. RNAseq and gene expression analysis revealed significant differential gene expression in AFB1-treated animals compared to control-fed domestic and wild birds and in within-treatment comparisons between bird types. Significantly upregulated expression of the primary hepatic AFB1-activating P450 (CYP1A5) as well as transcriptional changes in tight junction proteins were observed in AFB1-treated birds. Numerous pro-inflammatory cytokines, TGF-β and EGF were significantly down regulated by AFB1 treatment in DT birds and pathway analysis suggested suppression of enteroendocrine cells. Conversely, AFB1 treatment modified significantly fewer unique genes in EW birds; among these were genes involved in lipid synthesis and metabolism and immune response. This is the first investigation of the effects of AFB1 on the turkey gastro-intestinal tract. Results suggest that in addition to the hepatic transcriptome, animal resistance to this mycotoxin occurs in organ systems outside the liver, specifically as a refractory gastrointestinal tract.
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Affiliation(s)
- Kent M Reed
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN 55108, USA.
| | - Kristelle M Mendoza
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN 55108, USA.
| | - Roger A Coulombe
- Department of Animal, Dairy and Veterinary Sciences, College of Agriculture and Applied Sciences, Utah State University, Logan, UT 84322, USA.
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Ogunade IM, Martinez-Tuppia C, Queiroz OCM, Jiang Y, Drouin P, Wu F, Vyas D, Adesogan AT. Silage review: Mycotoxins in silage: Occurrence, effects, prevention, and mitigation. J Dairy Sci 2018; 101:4034-4059. [PMID: 29685276 DOI: 10.3168/jds.2017-13788] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 10/28/2017] [Indexed: 01/03/2023]
Abstract
Ensiled forage, particularly corn silage, is an important component of dairy cow diets worldwide. Forages can be contaminated with several mycotoxins in the field pre-harvest, during storage, or after ensiling during feed-out. Exposure to dietary mycotoxins adversely affects the performance and health of livestock and can compromise human health. Several studies and surveys indicate that ruminants are often exposed to mycotoxins such as aflatoxins, trichothecenes, ochratoxin A, fumonisins, zearalenone, and many other fungal secondary metabolites, via the silage they ingest. Problems associated with mycotoxins in silage can be minimized by preventing fungal growth before and after ensiling. Proper silage management is essential to reduce mycotoxin contamination of dairy cow feeds, and certain mold-inhibiting chemical additives or microbial inoculants can also reduce the contamination levels. Several sequestering agents also can be added to diets to reduce mycotoxin levels, but their efficacy varies with the type and level of mycotoxin contamination. This article gives an overview of the types, prevalence, and levels of mycotoxin contamination in ensiled forages in different countries, and describes their adverse effects on health of ruminants, and effective prevention and mitigation strategies for dairy cow diets. Future research priorities discussed include research efforts to develop silage additives or rumen microbial innocula that degrade mycotoxins.
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Affiliation(s)
- I M Ogunade
- Department of Animal Sciences, Institute of Food and Agricultural Sciences, University of Florida, Gainesville 32608
| | - C Martinez-Tuppia
- Lallemand Animal Nutrition, Lallemand SAS, 19 rue des Briquetiers, B.P. 59, F-31702 Blagnac, France
| | - O C M Queiroz
- Chr Hansen, Animal Health and Nutrition, Chr. Hansen, Buenos Aires 1107, Argentina
| | - Y Jiang
- Department of Animal Sciences, Institute of Food and Agricultural Sciences, University of Florida, Gainesville 32608
| | - P Drouin
- Lallemand Animal Nutrition, Lallemand SAS, 19 rue des Briquetiers, B.P. 59, F-31702 Blagnac, France
| | - F Wu
- Department of Food Science and Human Nutrition, Department of Agricultural, Food, and Resource Economics, Michigan State University, East Lansing 48824
| | - D Vyas
- Department of Animal Sciences, Institute of Food and Agricultural Sciences, University of Florida, Gainesville 32608
| | - A T Adesogan
- Department of Animal Sciences, Institute of Food and Agricultural Sciences, University of Florida, Gainesville 32608.
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15
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Hu P, Zuo Z, Wang F, Peng X, Guan K, Li H, Fang J, Cui H, Su G, Ouyang P, Zhou Y. The Protective Role of Selenium in AFB 1-Induced Tissue Damage and Cell Cycle Arrest in Chicken's Bursa of Fabricius. Biol Trace Elem Res 2018; 185:486-496. [PMID: 29512029 DOI: 10.1007/s12011-018-1273-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 02/13/2018] [Indexed: 01/09/2023]
Abstract
Aflatoxin B1 (AFB1) is a naturally occurring secondary metabolites of Aspergillus flavus and Aspergillus parasiticus, and is the most toxic form of aflatoxins. Selenium (Se) with antioxidant and detoxification functions is one of the essential trace elements for human beings and animals. This study aims to evaluate the protective effects of Se on AFB1-induced tissue damage and cell cycle arrest in bursa of Fabricius (BF) of chickens. The results showed that a dietary supplement of 0.4 mg·kg-1 Se alleviated the histological lesions induced by AFB1, as demonstrated by decreasing vacuoles and nuclear debris, and relieving oxidative stress. Furthermore, flow cytometry studies showed that a Se supplement protected AFB1-induced G2M phase arrest at 7 days and G0G1 phase arrest at 14 and 21 days. Moreover, the mRNA expression results of ATM, Chk2, p53, p21, cdc25, PCNA, cyclin D1, cyclin E1, cyclin B3, CDK6, CDK2, and cdc2 indicated that Se supplement could restore these parameters to be close to those in the control group. It is concluded that a dietary supplement of 0.4 mg kg-1 Se could diminish AFB1-induced immune toxicity in chicken's BF by alleviating oxidative damage and cell cycle arrest through an ATM-Chk2-cdc25 route and the ATM-Chk2-p21 pathway.
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Affiliation(s)
- Ping Hu
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Zhicai Zuo
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Fengyuan Wang
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Xi Peng
- College of Life Sciences, China West Normal University, Nanchong, 637002, Sichuan, People's Republic of China.
| | - Ke Guan
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
- College of Veterinary Medicine Chengdu, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Hang Li
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
- College of Veterinary Medicine Chengdu, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Jing Fang
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.
- College of Veterinary Medicine Chengdu, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.
| | - Hengmin Cui
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
- College of Veterinary Medicine Chengdu, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Gang Su
- College of Veterinary Medicine Chengdu, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Ping Ouyang
- College of Veterinary Medicine Chengdu, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Yi Zhou
- Life Science Department, Sichuan Agricultural University, Ya'an, 625014, Sichuan, People's Republic of China
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16
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Reed KM, Mendoza KM, Abrahante JE, Coulombe RA. Comparative Response of the Hepatic Transcriptomes of Domesticated and Wild Turkey to Aflatoxin B₁. Toxins (Basel) 2018; 10:toxins10010042. [PMID: 29342849 PMCID: PMC5793129 DOI: 10.3390/toxins10010042] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/08/2018] [Accepted: 01/10/2018] [Indexed: 12/15/2022] Open
Abstract
The food-borne mycotoxin aflatoxin B1 (AFB1) poses a significant risk to poultry, which are highly susceptible to its hepatotoxic effects. Domesticated turkeys (Meleagris gallopavo) are especially sensitive, whereas wild turkeys (M. g. silvestris) are more resistant. AFB1 toxicity entails bioactivation by hepatic cytochrome P450s to the electrophilic exo-AFB1-8,9-epoxide (AFBO). Domesticated turkeys lack functional hepatic GST-mediated detoxification of AFBO, and this is largely responsible for the differences in resistance between turkey types. This study was designed to characterize transcriptional changes induced in turkey livers by AFB1, and to contrast the response of domesticated (susceptible) and wild (more resistant) birds. Gene expression responses to AFB1 were examined using RNA-sequencing. Statistically significant differences in gene expression were observed among treatment groups and between turkey types. Expression analysis identified 4621 genes with significant differential expression (DE) in AFB1-treated birds compared to controls. Characterization of DE transcripts revealed genes dis-regulated in response to toxic insult with significant association of Phase I and Phase II genes and others important in cellular regulation, modulation of apoptosis, and inflammatory responses. Constitutive expression of GSTA3 was significantly higher in wild birds and was significantly higher in AFB1-treated birds when compared to controls for both genetic groups. This pattern was also observed by qRT-PCR in other wild and domesticated turkey strains. Results of this study emphasize the differential response of these genetically distinct birds, and identify genes and pathways that are differentially altered in aflatoxicosis.
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Affiliation(s)
- Kent M Reed
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN 55108, USA.
| | - Kristelle M Mendoza
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN 55108, USA.
| | - Juan E Abrahante
- University of Minnesota Informatics Institute, University of Minnesota, Minneapolis, MN 55455, USA.
| | - Roger A Coulombe
- Department of Animal, Dairy and Veterinary Sciences, College of Agriculture, Utah State University, Logan, UT 84322, USA.
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17
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Collier R, Renquist B, Xiao Y. A 100-Year Review: Stress physiology including heat stress. J Dairy Sci 2017; 100:10367-10380. [DOI: 10.3168/jds.2017-13676] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 08/22/2017] [Indexed: 12/13/2022]
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18
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The Molecular Basis of Toxins' Interactions with Intracellular Signaling via Discrete Portals. Toxins (Basel) 2017; 9:toxins9030107. [PMID: 28300784 PMCID: PMC5371862 DOI: 10.3390/toxins9030107] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 03/02/2017] [Accepted: 03/04/2017] [Indexed: 12/20/2022] Open
Abstract
An understanding of the molecular mechanisms by which microbial, plant or animal-secreted toxins exert their action provides the most important element for assessment of human health risks and opens new insights into therapies addressing a plethora of pathologies, ranging from neurological disorders to cancer, using toxinomimetic agents. Recently, molecular and cellular biology dissecting tools have provided a wealth of information on the action of these diverse toxins, yet, an integrated framework to explain their selective toxicity is still lacking. In this review, specific examples of different toxins are emphasized to illustrate the fundamental mechanisms of toxicity at different biochemical, molecular and cellular- levels with particular consideration for the nervous system. The target of primary action has been highlighted and operationally classified into 13 sub-categories. Selected examples of toxins were assigned to each target category, denominated as portal, and the modulation of the different portal’s signaling was featured. The first portal encompasses the plasma membrane lipid domains, which give rise to pores when challenged for example with pardaxin, a fish toxin, or is subject to degradation when enzymes of lipid metabolism such as phospholipases A2 (PLA2) or phospholipase C (PLC) act upon it. Several major portals consist of ion channels, pumps, transporters and ligand gated ionotropic receptors which many toxins act on, disturbing the intracellular ion homeostasis. Another group of portals consists of G-protein-coupled and tyrosine kinase receptors that, upon interaction with discrete toxins, alter second messengers towards pathological levels. Lastly, subcellular organelles such as mitochondria, nucleus, protein- and RNA-synthesis machineries, cytoskeletal networks and exocytic vesicles are also portals targeted and deregulated by other diverse group of toxins. A fundamental concept can be drawn from these seemingly different toxins with respect to the site of action and the secondary messengers and signaling cascades they trigger in the host. While the interaction with the initial portal is largely determined by the chemical nature of the toxin, once inside the cell, several ubiquitous second messengers and protein kinases/ phosphatases pathways are impaired, to attain toxicity. Therefore, toxins represent one of the most promising natural molecules for developing novel therapeutics that selectively target the major cellular portals involved in human physiology and diseases.
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19
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Parker NS, Anderson NR, Richmond DS, Long EY, Wise KA, Krupke CH. Larval western bean cutworm feeding damage encourages the development of Gibberella ear rot on field corn. PEST MANAGEMENT SCIENCE 2017; 73:546-553. [PMID: 27158946 DOI: 10.1002/ps.4313] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 04/07/2016] [Accepted: 05/04/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND A 2 year study was conducted to determine whether western bean cutworm (Striacosta albicosta Smith) (WBC) larval feeding damage increases severity of the fungal disease Gibberella ear rot [Fusarium graminearum (Schwein.) Petch] in field corn (Zea mays L.). The effect of a quinone-outside inhibiting fungicide, pyraclostrobin, on Gibberella ear rot severity and mycotoxin production, both with and without WBC pressure, was also evaluated. The impact of each variable was assessed individually and in combination to determine the effect of each upon ear disease severity. RESULTS There was a positive correlation between the presence of WBC larvae in field corn and Gibberella ear rot severity under inoculated conditions in the 2 years of the experiment. An application of pyraclostrobin did not impact Gibberella ear rot development when applied at corn growth stage R1 (silks first emerging). CONCLUSION Feeding damage from WBC larvae significantly increases the development of F. graminearum in field corn. We conclude that an effective integrated management strategy for Gibberella ear rot should target the insect pest first, in an effort to limit disease severity and subsequent mycotoxin production by F. graminearum in kernels. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Nicole S Parker
- Department of Entomology, Purdue University, West Lafayette, IN, USA
| | - Nolan R Anderson
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN, USA
| | | | - Elizabeth Y Long
- Department of Entomology, Purdue University, West Lafayette, IN, USA
| | - Kiersten A Wise
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN, USA
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Koteswara Rao V, Girisham S, Madhusudhan Reddy S. Prevalence of toxigenic Penicillium species associated with poultry house in Telangana, India. ARCHIVES OF ENVIRONMENTAL & OCCUPATIONAL HEALTH 2016; 71:353-361. [PMID: 26771300 DOI: 10.1080/19338244.2016.1140627] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The prevalence of mycotoxigenic Penicillium species in poultry houses of Telangana, India, was studied during 4 seasons between June 2009 and May 2010. Fungi belonging to 13 genera, including Penicillium, comprising 43 species were collected using petri plates. Fourteen Penicillium species demonstrated varying degrees of mycotoxigenicity. Chemical and chromatographic analysis of the different poultry feed samples revealed 8 different mycotoxins with ochratoxin A (OTA) predominating. The mean contamination rate of OTA was 38%. OTA quantities ranged between 5.78 and 6.73 µg/kg-1, 10.13 and 14.23 µg/kg-1, and 12.33 and 15.20 µg/kg-1 in starter, broiler, and layer feeds, respectively. Statistically significant positive correlation between prevalence of Penicillium species and the monsoon, autumn, and spring seasons and negative correlation between prevalence and the autumn, spring, and summer seasons were observed. These findings may serve as risk exposure indicators and contribute toward the initiation of a sustainable control program.
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Affiliation(s)
| | - Sivadevuni Girisham
- a Department of Microbiology , Kakatiya University , Warangal , Telangana , India
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21
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McElhinney C, Danaher M, Elliott C, O’Kiely P. On-farm factors relating to mycotoxin occurrence and other chemical compositional traits in grass silages in Ireland. WORLD MYCOTOXIN J 2016. [DOI: 10.3920/wmj2016.2060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Many pre- and post-mowing on-farm traits influence mycotoxin occurrence and conventional chemical compositionin grass silages. The objective of this study was to determine if observed on-farm pre- or post-mowing factors can be used to indicate mycotoxin occurrence or conventional chemical composition traits in grass silages. Over a two year period (2012-2013 and 2013-2014) 290 grass silages were sampled on 145 farms and these consisted of baled (n=115) and pit (n=175) silages. On each farm in each year, a questionnaire was completed and pre- and post-mowingfactors recorded. The preservation quality was better in pit compared to baled silages in both years and in silages made in Year 2 compared with Year 1. On-farm pre- and post-mowing factors were generally not secure indicators of silage conventional chemical characteristics. In contrast, the occurrence of enniatins and beauvericin generally increased with harvesting month (May-October) for grass silages. Visible mould on baled grass silages and a rottedtop layer with pit grass silages were associated with andrastin A, mycophenolic acid and roquefortine C occurrence.
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Affiliation(s)
- C. McElhinney
- Teagasc Animal & Grassland Research and Innovation Centre, Grange, Dunsany, Co. Meath, Ireland
- Institute for Global Food Security, Queens University Belfast, University Road, BT71NN Belfast, United Kingdom
- Food Safety Department, Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland
| | - M. Danaher
- Food Safety Department, Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland
| | - C.T Elliott
- Institute for Global Food Security, Queens University Belfast, University Road, BT71NN Belfast, United Kingdom
| | - P. O’Kiely
- Teagasc Animal & Grassland Research and Innovation Centre, Grange, Dunsany, Co. Meath, Ireland
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22
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Del Palacio A, Bettucci L, Pan D. Fusarium and Aspergillus mycotoxins contaminating wheat silage for dairy cattle feeding in Uruguay. Braz J Microbiol 2016; 47:1000-1005. [PMID: 27522933 PMCID: PMC5052332 DOI: 10.1016/j.bjm.2016.06.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Accepted: 02/25/2016] [Indexed: 11/24/2022] Open
Abstract
Wheat is one of the most important cultivated cereals in Uruguay for human consumption; however, when harvest yields are low, wheat is usually used in ensiling for animal feeding. Ensiling is a forage preservation method that allows for storage during extended periods of time while maintaining nutritional values comparable to fresh pastures. Silage is vulnerable to contamination by spoilage molds and mycotoxins because ensilage materials are excellent substrates for fungal growth. The aim of the study was to identify the mycobiota composition and occurrence of aflatoxins and DON from wheat silage. A total of 220 samples of wheat were collected from four farms in the southwest region of Uruguay were silage practices are developed. The main fungi isolated were Fusarium (43%) and Aspergillus (36%), with Fusarium graminearum sensu lato and Aspergillus section Flavi being the most prevalent species. Aflatoxin concentrations in silo bags ranged from 6.1 to 23.3μg/kg, whereas DON levels ranged between 3000μg/kg and 12,400μg/kg. When evaluating aflatoxigenic capacity, 27.5% of Aspergillus section Flavi strains produced AFB1, 5% AFB2, 10% AFG1 and 17.5% AFG2. All isolates of F. graminearum sensu lato produced DON and 15-AcDON. The results from this study contribute to the knowledge of mycobiota and mycotoxins present in wheat silage.
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Affiliation(s)
- Agustina Del Palacio
- Universidad de la República, Facultad de Ciencias-Facultad de Ingeniería, Montevideo, Uruguay
| | - Lina Bettucci
- Universidad de la República, Facultad de Ciencias-Facultad de Ingeniería, Montevideo, Uruguay
| | - Dinorah Pan
- Universidad de la República, Facultad de Ciencias-Facultad de Ingeniería, Montevideo, Uruguay.
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Peng X, Chen K, Chen J, Fang J, Cui H, Zuo Z, Deng J, Chen Z, Geng Y, Lai W. Aflatoxin B1 affects apoptosis and expression of Bax, Bcl-2, and Caspase-3 in thymus and bursa of fabricius in broiler chickens. ENVIRONMENTAL TOXICOLOGY 2016; 31:1113-1120. [PMID: 25736028 DOI: 10.1002/tox.22120] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 01/13/2015] [Accepted: 01/24/2015] [Indexed: 06/04/2023]
Abstract
Aflatoxin B1 is known as a mycotoxin that develops various health problems of animals, the effects of AFB1 on thymus and bursa of Fabricius in chickens are not clear. The objective of this study was to investigate the apoptosis of thymus and bursa of Fabricius in broilers fed with AFB1 . Two hundred Avian broilers were randomly divided into four groups of 50 each, namely control group and three AFB1 groups fed with 0.15 mg, 0.3 mg, and 0.6 mg AFB1 /kg diet, respectively. In this study, flow cytometer and immunohistochemical approaches were used to determine the percentage of apoptotic cells and the expression of Bax, Bcl-2, and Caspase-3. The results showed that consumption of AFB1 diets results in increased percentage of apoptotic cells and increased expression of Caspase-3 in both thymus and bursa of Fabricius. The expression of Bax was increased and the expression of Bcl-2 was decreased in the thymus, but no significant changes in Bax and Bcl-2 expression were observed in the bursa of Fabricius when broilers fed with AFB1 . These findings suggest that adverse effects of AFB1 on thymus and bursa of Fabricius in broilers were confirmed by increased apoptotic cells and abnormal expression of Caspase-3. © 2015 Wiley Periodicals, Inc. Environ Toxicol 31: 1113-1120, 2016.
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Affiliation(s)
- Xi Peng
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan, People's Republic of China, 625014
| | - Kejie Chen
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan, People's Republic of China, 625014
| | - Jin Chen
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan, People's Republic of China, 625014
| | - Jing Fang
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan, People's Republic of China, 625014
| | - Hengmin Cui
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan, People's Republic of China, 625014
| | - Zhicai Zuo
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan, People's Republic of China, 625014
| | - Junliang Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan, People's Republic of China, 625014
| | - Zhengli Chen
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan, People's Republic of China, 625014
| | - Yi Geng
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan, People's Republic of China, 625014
| | - Weimin Lai
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan, People's Republic of China, 625014
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24
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Shi J, He J, Lin J, Sun X, Sun F, Ou C, Jiang C. Distinct response of the hepatic transcriptome to Aflatoxin B1 induced hepatocellular carcinogenesis and resistance in rats. Sci Rep 2016; 6:31898. [PMID: 27545718 PMCID: PMC4992951 DOI: 10.1038/srep31898] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 07/28/2016] [Indexed: 11/26/2022] Open
Abstract
Aflatoxin is a natural potent carcinogen and a major cause of liver cancer. However, the molecular mechanisms of hepatocellular carcinogenesis remain largely unexplored. In this study, we profiled global gene expression in liver tissues of rats that developed hepatocellular carcinoma (HCC) from aflatoxin B1 (AFB1) administration and those that were AFB1-resistant, as well as rats without AFB1 exposure as a control. AFB1 exposure resulted in extensive perturbation in gene expression with different functions in HCC and AFB1 resistance (AR) samples. The differentially expressed genes (DEGs) in HCC sample were enriched for cell proliferation, cell adhesion and vasculature development that largely contribute to carcinogenesis. Anti-apoptosis genes were up-regulated in HCC sample whereas apoptosis-induction genes were up-regulated in AR sample. AFB1 exposure also caused extensive alteration in expression level of lncRNAs. Among all the 4511 annotated lncRNAs, half of them were highly expressed only in HCC sample and up-regulated a group of protein-coding genes with cancer-related functions: apoptosis regulation, DNA repair, and cell cycle. Intriguingly, these genes were down-regulated by lncRNAs highly expressed in AR sample. Collectively, apoptosis is the critical biological process for carcinogenesis in response to AFB1 exposure through changes in expression level of both protein-coding and lncRNA genes.
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Affiliation(s)
- Jiejun Shi
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai, China.,Shanghai Key Laboratory of Signaling and Disease Research, the School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Jiangtu He
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai, China
| | - Jing Lin
- Shanghai Key Laboratory of Signaling and Disease Research, the School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Xin Sun
- Shanghai Key Laboratory of Signaling and Disease Research, the School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Fenyong Sun
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai, China
| | - Chao Ou
- Department of Clinical Laboratory, the Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi Province, China
| | - Cizhong Jiang
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai, China.,Shanghai Key Laboratory of Signaling and Disease Research, the School of Life Sciences and Technology, Tongji University, Shanghai, China
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25
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Mohsenzadeh MS, Hedayati N, Riahi-Zanjani B, Karimi G. Immunosuppression following dietary aflatoxin B1 exposure: a review of the existing evidence. TOXIN REV 2016. [DOI: 10.1080/15569543.2016.1209523] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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26
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Migliorati L, Abeni F, Cattaneo MP, Tornielli C, Pirlo G. Effects of adsorbents in dairy cow diet on milk quality and cheese-making properties. ITALIAN JOURNAL OF ANIMAL SCIENCE 2016. [DOI: 10.4081/ijas.2007.1s.460] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- L. Migliorati
- Istituto Sperimentale per la Zootecnia, Consiglio per la Ricerca e la Sperimentazione in Agricoltura, Cremona, Italy
| | - F. Abeni
- Istituto Sperimentale per la Zootecnia, Consiglio per la Ricerca e la Sperimentazione in Agricoltura, Cremona, Italy
| | - M. P. Cattaneo
- Istituto Sperimentale Lattiero Caseario, Consiglio per la Ricerca e la Sperimentazione in Agricoltura, Lodi, Italy
| | - C. Tornielli
- Istituto Sperimentale Lattiero Caseario, Consiglio per la Ricerca e la Sperimentazione in Agricoltura, Lodi, Italy
| | - G. Pirlo
- Istituto Sperimentale per la Zootecnia, Consiglio per la Ricerca e la Sperimentazione in Agricoltura, Cremona, Italy
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27
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Abeni F, Bertoni G. Main causes of poor welfare in intensively reared dairy cows. ITALIAN JOURNAL OF ANIMAL SCIENCE 2016. [DOI: 10.4081/ijas.2009.s1.45] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Gallo A, Moschini M, Masoero F. Aflatoxins absorption in the gastro-intestinal tract and in the vaginal mucosa in lactating dairy cows. ITALIAN JOURNAL OF ANIMAL SCIENCE 2016. [DOI: 10.4081/ijas.2008.53] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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29
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Mehrim AI, Refaey MM, Elmeleigy KM. Glutathione-Enhancer™ Against Foodborne Aflatoxicosis of Oreochromis niloticus (Linnaeus, 1758). ACTA ACUST UNITED AC 2016. [DOI: 10.3923/jfas.2016.131.146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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30
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Aflatoxigenic Fungi in Food Grains: Detection, Its Impact on Handlers and Management Strategies. Fungal Biol 2016. [DOI: 10.1007/978-3-319-27312-9_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Schmidt P, Novinski C, Junges D, Almeida R, de Souza C. Concentration of mycotoxins and chemical composition of corn silage: A farm survey using infrared thermography. J Dairy Sci 2015; 98:6609-19. [DOI: 10.3168/jds.2014-8617] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 05/12/2015] [Indexed: 11/19/2022]
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32
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Mahunu GK, Zhang H, Yang Q, Li C, Zheng X. Biological Control of Patulin by Antagonistic Yeast: A case study and possible model. Crit Rev Microbiol 2015; 42:643-55. [DOI: 10.3109/1040841x.2015.1009823] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Gustav Komla Mahunu
- Jiangsu University, School of Food and Biological Engineering, Zhenjiang, China
| | - Hongyin Zhang
- Jiangsu University, School of Food and Biological Engineering, Zhenjiang, China
| | - Qiya Yang
- Jiangsu University, School of Food and Biological Engineering, Zhenjiang, China
| | - Chaolan Li
- Jiangsu University, School of Food and Biological Engineering, Zhenjiang, China
| | - Xiangfeng Zheng
- Jiangsu University, School of Food and Biological Engineering, Zhenjiang, China
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33
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Al-Hatmi AMS, Bonifaz A, de Hoog GS, Vazquez-Maya L, Garcia-Carmona K, Meis JF, van Diepeningen AD. Keratitis by Fusarium temperatum, a novel opportunist. BMC Infect Dis 2014; 14:588. [PMID: 25388601 PMCID: PMC4234859 DOI: 10.1186/s12879-014-0588-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Accepted: 10/24/2014] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Fusarium species are among the most common fungi present in the environment and some species have emerged as major opportunistic fungal infection in human. However, in immunocompromised hosts they can be virulent pathogens and can cause death. The pathogenesis of this infection relies on three factors: colonization, tissue damage, and immunosuppression. A novel Fusarium species is reported for the first time from keratitis in an agriculture worker who acquired the infection from plant material of maize. Maize plants are the natural host of this fungus where it causes stalk rot and seeding malformation under temperate and humid climatic conditions. The clinical manifestation, microbiological morphology, physiological features and molecular data are described. METHODS Diagnosis was established by using polymerase chain reaction of fungal DNA followed by sequencing portions of translation elongation factor 1 alpha (TEF1 α) and beta-tubulin (BT2) genes. Susceptibility profiles of this fungus were evaluated using CLSI broth microdilution method. RESULTS The analyses of these two genes sequences support a novel opportunist with the designation Fusarium temperatum. Phylogenetic analyses showed that the reported clinical isolate was nested within the Fusarium fujikuroi species complex. Antifungal susceptibility testing demonstrated that the fungus had low MICs of micafungin (0.031 μg/ml), posaconazole (0.25 μg/ml) and amphotericin B (0.5 μg/ml). CONCLUSION The present case extends the significance of the genus Fusarium as agents of keratitis and underscores the utility of molecular verification of these emerging fungi in the human host.
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Affiliation(s)
- Abdullah M S Al-Hatmi
- />CBS-KNAW Fungal Biodiversity Centre, Utrecht, 3508 AD The Netherlands
- />Institute of Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
- />Directorate General of Health Services, Ibri Hospital, Ministry of Health, Muscat, Oman
| | | | - G Sybren de Hoog
- />CBS-KNAW Fungal Biodiversity Centre, Utrecht, 3508 AD The Netherlands
- />Institute of Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
- />Peking University Health Science Center, Research Center for Medical Mycology, Beijing, China
- />Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- />Shanghai Institute of Medical Mycology, Changzheng Hospital, Second Military Medical University, Shanghai, China
- />Basic Pathology Department, Federal University of Paraná State, Curitiba, Paraná Brazil
- />King Abdulaziz University, Jeddah, Saudi Arabia
| | | | | | - Jacques F Meis
- />Department of Medical Microbiology and Infectious Diseases, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands
- />Department of Medical Microbiology, Radboud University Medical Center, Nijmegen, The Netherlands
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The Fusarium graminearum genome reveals more secondary metabolite gene clusters and hints of horizontal gene transfer. PLoS One 2014; 9:e110311. [PMID: 25333987 PMCID: PMC4198257 DOI: 10.1371/journal.pone.0110311] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 09/11/2014] [Indexed: 01/07/2023] Open
Abstract
Fungal secondary metabolite biosynthesis genes are of major interest due to the pharmacological properties of their products (like mycotoxins and antibiotics). The genome of the plant pathogenic fungus Fusarium graminearum codes for a large number of candidate enzymes involved in secondary metabolite biosynthesis. However, the chemical nature of most enzymatic products of proteins encoded by putative secondary metabolism biosynthetic genes is largely unknown. Based on our analysis we present 67 gene clusters with significant enrichment of predicted secondary metabolism related enzymatic functions. 20 gene clusters with unknown metabolites exhibit strong gene expression correlation in planta and presumably play a role in virulence. Furthermore, the identification of conserved and over-represented putative transcription factor binding sites serves as additional evidence for cluster co-regulation. Orthologous cluster search provided insight into the evolution of secondary metabolism clusters. Some clusters are characteristic for the Fusarium phylum while others show evidence of horizontal gene transfer as orthologs can be found in representatives of the Botrytis or Cochliobolus lineage. The presented candidate clusters provide valuable targets for experimental examination.
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35
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Asghar MA, Iqbal J, Ahmed A, Khan MA, Shamsuddin ZA, Jamil K. Development and validation of a high-performance liquid chromatography method with post-column derivatization for the detection of aflatoxins in cereals and grains. Toxicol Ind Health 2014; 32:1122-34. [DOI: 10.1177/0748233714547732] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A novel, reliable and rapid high-performance liquid chromatography (HPLC) method with post-column derivatization was developed and validated. The HPLC method was used for the simultaneous determination of aflatoxin B1 (AFB1), B2 (AFB2), G1 (AFG1) and G2 (AFG2) in various cereals and grains. Samples were extracted with 80:20 (v/v) methanol:water and purified using C18 (40–63 μm) solid-phase extraction cartridges. AFs were separated using a LiChroCART–RP-18 (5 μm, 250 × 4.0 mm2) column. The mobile phase consisted of methanol:acetonitrile:buffer (17.5:17.5:65 v/v) (pH 7.4) delivered at the flow rate of 1.0 mL min−1. The fluorescence of each AF was detected at λex = 365 nm and λem = 435 nm. All four AFs were properly resolved within the total run time of 20 min. The established method was extensively validated as a final verification of the method development by the evaluation of selectivity (AFB1, AFB2, AFG1 and AFG2), linearity ( R2 ≥ 0.9994), precision (average SD ≤ 2.79), accuracy (relative mean error ≤ −5.51), robustness ( p < 0.0080), ruggedness ( p < 0.0100) and average recoveries (89.2–97.8%). The limits of quantification of AFB1, AFB2, AFG1 and AFG2 were 0.080, 0.073, 0.062 and 0.066 ng g−1, respectively. Finally, the developed method was applied for the analysis of AFs in 45 samples comprising rice ( n = 20), wheat ( n = 15) and maize ( n = 10). The results showed that 65% of rice, 20% of wheat and 80% of maize samples were found contaminated with AFs. Thus, according to the achieved results, it is suggested that the newly developed HPLC method could be effectively applied for the routine analysis of the AFs in different cereals and grains.
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Affiliation(s)
| | | | | | | | | | - Khalid Jamil
- Food and Feed Safety Laboratory, Food and Marine Resources Research Centre, PCSIR Laboratories Complex, Karachi, Pakistan
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36
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Monson MS, Settlage RE, McMahon KW, Mendoza KM, Rawal S, El-Nezami HS, Coulombe RA, Reed KM. Response of the hepatic transcriptome to aflatoxin B1 in domestic turkey (Meleagris gallopavo). PLoS One 2014; 9:e100930. [PMID: 24979717 PMCID: PMC4076218 DOI: 10.1371/journal.pone.0100930] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 06/02/2014] [Indexed: 12/21/2022] Open
Abstract
Dietary exposure to aflatoxin B1 (AFB1) is detrimental to avian health and leads to major economic losses for the poultry industry. AFB1 is especially hepatotoxic in domestic turkeys (Meleagris gallopavo), since these birds are unable to detoxify AFB1 by glutathione-conjugation. The impacts of AFB1 on the turkey hepatic transcriptome and the potential protection from pretreatment with a Lactobacillus-based probiotic mixture were investigated through RNA-sequencing. Animals were divided into four treatment groups and RNA was subsequently recovered from liver samples. Four pooled RNA-seq libraries were sequenced to produce over 322 M reads totaling 13.8 Gb of sequence. Approximately 170,000 predicted transcripts were de novo assembled, of which 803 had significant differential expression in at least one pair-wise comparison between treatment groups. Functional analysis linked many of the transcripts significantly affected by AFB1 exposure to cancer, apoptosis, the cell cycle or lipid regulation. Most notable were transcripts from the genes encoding E3 ubiquitin-protein ligase Mdm2, osteopontin, S-adenosylmethionine synthase isoform type-2, and lipoprotein lipase. Expression was modulated by the probiotics, but treatment did not completely mitigate the effects of AFB1. Genes identified through transcriptome analysis provide candidates for further study of AFB1 toxicity and targets for efforts to improve the health of domestic turkeys exposed to AFB1.
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Affiliation(s)
- Melissa S. Monson
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, Minnesota, United States of America
| | - Robert E. Settlage
- Data Analysis Core, Virginia Bioinformatics Institute, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, United States of America
| | - Kevin W. McMahon
- Data Analysis Core, Virginia Bioinformatics Institute, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, United States of America
| | - Kristelle M. Mendoza
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, Minnesota, United States of America
| | - Sumit Rawal
- Department of Animal, Dairy and Veterinary Sciences, College of Agriculture, Utah State University, Logan, Utah, United States of America
| | - Hani S. El-Nezami
- School of Biological Sciences, University of Hong Kong, Hong Kong, China
| | - Roger A. Coulombe
- Department of Animal, Dairy and Veterinary Sciences, College of Agriculture, Utah State University, Logan, Utah, United States of America
| | - Kent M. Reed
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, Minnesota, United States of America
- * E-mail:
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37
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Rawal S, Bauer MM, Mendoza KM, El-Nezami H, Hall JR, Kim JE, Stevens JR, Reed KM, Coulombe RA. Aflatoxicosis chemoprevention by probiotic Lactobacillius and lack of effect on the major histocompatibility complex. Res Vet Sci 2014; 97:274-81. [PMID: 24997556 DOI: 10.1016/j.rvsc.2014.06.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 04/10/2014] [Accepted: 06/07/2014] [Indexed: 11/16/2022]
Abstract
Turkeys are extremely sensitive to aflatoxin B1 (AFB1) which causes decreased growth, immunosuppression and liver necrosis. The purpose of this study was to determine whether probiotic Lactobacillus, shown to be protective in animal and clinical studies, would likewise confer protection in turkeys, which were treated for 11 days with either AFB1 (AFB; 1 ppm in diet), probiotic (PB; 1 × 10(11) CFU/ml; oral, daily), probiotic + AFB1 (PBAFB), or PBS control (CNTL). The AFB1 induced drop in body and liver weights were restored to normal in CNTL and PBAFB groups. Hepatotoxicity markers were not significantly reduced by probiotic treatment. Major histocompatibility complex (MHC) genes BG1 and BG4, which are differentially expressed in liver and spleens, were not significantly affected by treatments. These data indicate modest protection, but the relatively high dietary AFB1 treatment, and the extreme sensitivity of this species may reveal limits of probiotic-based protection strategies.
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Affiliation(s)
- Sumit Rawal
- Graduate Toxicology Program, and Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT 84322, USA
| | - Miranda M Bauer
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN 55108, USA
| | - Kristelle M Mendoza
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN 55108, USA
| | - Hani El-Nezami
- School of Biological Sciences, University of Hong Kong, Hong Kong, China
| | - Jeffery R Hall
- Graduate Toxicology Program, and Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT 84322, USA
| | - Ji Eun Kim
- Graduate Toxicology Program, and Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT 84322, USA
| | - John R Stevens
- Department of Mathematics and Statistics, Utah State University, Logan, UT 84322, USA
| | - Kent M Reed
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN 55108, USA
| | - Roger A Coulombe
- Graduate Toxicology Program, and Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT 84322, USA.
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Edite Bezerra da Rocha M, Freire FDCO, Erlan Feitosa Maia F, Izabel Florindo Guedes M, Rondina D. Mycotoxins and their effects on human and animal health. Food Control 2014. [DOI: 10.1016/j.foodcont.2013.08.021] [Citation(s) in RCA: 339] [Impact Index Per Article: 33.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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39
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Afsah-Hejri L, Jinap S, Hajeb P, Radu S, Shakibazadeh S. A Review on Mycotoxins in Food and Feed: Malaysia Case Study. Compr Rev Food Sci Food Saf 2013; 12:629-651. [DOI: 10.1111/1541-4337.12029] [Citation(s) in RCA: 112] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2013] [Accepted: 06/17/2013] [Indexed: 01/15/2023]
Affiliation(s)
- L. Afsah-Hejri
- Food Safety Research Centre (FOSREC); Faculty of Food Science and Technology, Univ. Putra Malaysia; 43400 UPM; Serdang; Selangor; Malaysia
| | - S. Jinap
- Food Safety Research Centre (FOSREC); Faculty of Food Science and Technology, Univ. Putra Malaysia; 43400 UPM; Serdang; Selangor; Malaysia
| | - P. Hajeb
- Food Safety Research Centre (FOSREC); Faculty of Food Science and Technology, Univ. Putra Malaysia; 43400 UPM; Serdang; Selangor; Malaysia
| | - S. Radu
- Food Safety Research Centre (FOSREC); Faculty of Food Science and Technology, Univ. Putra Malaysia; 43400 UPM; Serdang; Selangor; Malaysia
| | - Sh. Shakibazadeh
- Dept. of Aquaculture, Faculty of Agriculture; Univ. Putra Malaysia; 43400, UPM Serdang; Selangor; Malaysia
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40
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Individual and combined effects of Fusarium toxins on the mRNA expression of pro-inflammatory cytokines in swine jejunal epithelial cells. Toxicol Lett 2013; 220:238-46. [DOI: 10.1016/j.toxlet.2013.05.003] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 05/06/2013] [Accepted: 05/09/2013] [Indexed: 11/17/2022]
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42
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Rosada LJ, Sant'anna JR, Franco CCS, Esquissato GNM, Santos PASR, Yajima JPRS, Ferreira FD, Machinski M, Corrêa B, Castro-Prado MAA. Identification of Aspergillus flavus isolates as potential biocontrol agents of aflatoxin contamination in crops. J Food Prot 2013; 76:1051-5. [PMID: 23726204 DOI: 10.4315/0362-028x.jfp-12-436] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Aspergillus flavus, a haploid organism found worldwide in a variety of crops, including maize, cottonseed, almond, pistachio, and peanut, causes substantial and recurrent worldwide economic liabilities. This filamentous fungus produces aflatoxins (AFLs) B1 and B2, which are among the most carcinogenic compounds from nature, acutely hepatotoxic and immunosuppressive. Recent efforts to reduce AFL contamination in crops have focused on the use of nonaflatoxigenic A. flavus strains as biological control agents. Such agents are applied to soil to competitively exclude native AFL strains from crops and thereby reduce AFL contamination. Because the possibility of genetic recombination in A. flavus could influence the stability of biocontrol strains with the production of novel AFL phenotypes, this article assesses the diversity of vegetative compatibility reactions in isolates of A. flavus to identify heterokaryon self-incompatible (HSI) strains among nonaflatoxigenic isolates, which would be used as biological controls of AFL contamination in crops. Nitrate nonutilizing (nit) mutants were recovered from 25 A. flavus isolates, and based on vegetative complementation between nit mutants and on the microscopic examination of the number of hyphal fusions, five nonaflatoxigenic (6, 7, 9 to 11) and two nontoxigenic (8 and 12) isolates of A. flavus were phenotypically characterized as HSI. Because the number of hyphal fusions is reduced in HSI strains, impairing both heterokaryon formation and the genetic exchanges with aflatoxigenic strains, the HSI isolates characterized here, especially isolates 8 and 12, are potential agents for reducing AFL contamination in crops.
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Affiliation(s)
- L J Rosada
- Departamento de Biotecnologia, Genética e Biologia Celular, Laboratório de Genética de Microrganismos, Universidade Estadual de Maringá, Avenida Colombo 5790, Maringá, CEP 87020-900, PR, Brasil
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Alpha-class glutathione S-transferases in wild turkeys (Meleagris gallopavo): characterization and role in resistance to the carcinogenic mycotoxin aflatoxin B1. PLoS One 2013; 8:e60662. [PMID: 23613737 PMCID: PMC3628786 DOI: 10.1371/journal.pone.0060662] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 02/26/2013] [Indexed: 11/19/2022] Open
Abstract
Domestic turkeys (Meleagris gallopavo) are one of the most susceptible animals known to the toxic effects of the mycotoxin aflatoxin B1 (AFB1), a potent human hepatocarcinogen, and universal maize contaminant. We have demonstrated that such susceptibility is associated with the inability of hepatic glutathione S-transferases (GSTs) to detoxify the reactive electrophilic metabolite exo-AFB1-8,9-epoxide (AFBO). Unlike their domestic counterparts, wild turkeys, which are relatively AFB1-resistant, possess hepatic GST-mediated AFBO conjugating activity. Here, we characterized the molecular and functional properties of hepatic alpha-class GSTs (GSTAs) from wild and domestic turkeys to shed light on the differences in resistance between these closely related strains. Six alpha-class GST genes (GSTA) amplified from wild turkeys (Eastern and Rio Grande subspecies), heritage breed turkeys (Royal Palm) and modern domestic (Nicholas strain) turkeys were sequenced, and catalytic activities of heterologously-expressed recombinant enzymes determined. Alpha-class identity was affirmed by conserved GST domains and four signature motifs. All GSTAs contained single nucleotide polymorphisms (SNPs) in their coding regions: GSTA1.1 (5 SNPs), GSTA1.2 (7), GSTA1.3 (3), GSTA2 (3), GSTA3 (1) and GSTA4 (2). E. coli-expressed GSTAs possessed varying activities toward GST substrates 1-chloro-2,4-dinitrobenzene (CDNB), 1,2-dichloro-4-nitrobenzene (DCNB), ethacrynic acid (ECA), cumene hydroperoxide (CHP). As predicted by their relative resistance, livers from domestic turkeys lacked detectable GST-mediated AFBO detoxification activity, whereas those from wild and heritage birds possessed this critical activity, suggesting that intensive breeding and selection resulted in loss of AFB1-protective alleles during domestication. Our observation that recombinant tGSTAs detoxify AFBO, whereas their hepatic forms do not, implies that the hepatic forms of these enzymes are down-regulated, silenced, or otherwise modified by one or more mechanisms. These data may inform of possible molecular mechanisms of resistance to AFB1, and may also have the benefit of identifying genetic markers which could be used to enhance AFB1 resistance in modern domestic strains.
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Wan LYM, Turner PC, El-Nezami H. Individual and combined cytotoxic effects of Fusarium toxins (deoxynivalenol, nivalenol, zearalenone and fumonisins B1) on swine jejunal epithelial cells. Food Chem Toxicol 2013; 57:276-83. [PMID: 23562706 DOI: 10.1016/j.fct.2013.03.034] [Citation(s) in RCA: 131] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Revised: 03/02/2013] [Accepted: 03/22/2013] [Indexed: 01/31/2023]
Abstract
Fusarium mycotoxins occur worldwide in foods such as cereals and animal forages, leading to acute and chronic exposures in human and animals. Intestinal epithelial cells (IECs) are an important first target site for these dietary toxins. This study investigated the cytotoxicity of four common Fusarium mycotoxins, deoxynivalenol (DON), nivalenol (NIV), zearalenone (ZEA) and fumonisin B1 (FB1) on a normal porcine jejunal epithelial cell line, IPEC-J2. A dose response relationship between individual mycotoxins and cell viability (MTT assay) was initially investigated, and subsequently cytotoxic and non-cytotoxic concentrations were selected to investigate combinations of two, three and all four of the mycotoxins. For individual mycotoxins, a dose response was observed with cell viability, such that the potency ranking was NIV>DON>ZEA>FB1. At cytotoxic doses of individual mycotoxins, all mixtures gave reduced cell viability compared to control. At noncytotoxic concentrations of individual mycotoxins, all mixtures were cytotoxic with DON-NIV, DON-ZEA, DON-NIV-FB1, DON-ZEA-FB1, NIV-ZEA-FB1 and all four mixed causing the greatest loss of cell viability. The latter observation in particular raises concerns over safety margins based on single toxin species, and suggests that the effects of multiple complex mixtures need to be better understood to assess health risks.
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Affiliation(s)
- Lam Yim Murphy Wan
- School of Biological Sciences, Faculty of Science, Kadoorie Biological Sciences Building, The University of Hong Kong, Pokfulam, Hong Kong
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45
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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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Culture Media and Factors Influencing Ochratoxin A Production by Two Species of Penicillium Isolated from Poultry Feeds. NATIONAL ACADEMY SCIENCE LETTERS-INDIA 2013. [DOI: 10.1007/s40009-012-0096-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abrar M, Anjum FM, Butt MS, Pasha I, Randhawa MA, Saeed F, Waqas K. Aflatoxins: Biosynthesis, Occurrence, Toxicity, and Remedies. Crit Rev Food Sci Nutr 2013; 53:862-74. [DOI: 10.1080/10408398.2011.563154] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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48
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Paterson RRM, Lima N. Biochemical mutagens affect the preservation of fungi and biodiversity estimations. Appl Microbiol Biotechnol 2012; 97:77-85. [DOI: 10.1007/s00253-012-4554-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Revised: 10/23/2012] [Accepted: 10/24/2012] [Indexed: 11/25/2022]
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49
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Human skin penetration of selected model mycotoxins. Toxicology 2012; 301:21-32. [DOI: 10.1016/j.tox.2012.06.012] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Revised: 05/24/2012] [Accepted: 06/19/2012] [Indexed: 12/13/2022]
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50
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SAMBUU R, TAKAGI M, NAMULA Z, NII M, TANIGUCHI M, UNO S, KOKUSHI E, TSHERING C, SANTOS RRD, FINK-GREMMELS J, OTOI T. Effects of long-termin vitroexposure of ejaculated boar sperm to zearalenone and α-zearalenol in sperm liquid storage medium. Anim Sci J 2012; 84:28-34. [DOI: 10.1111/j.1740-0929.2012.01033.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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