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Salako AO, Atteh JO, Akande TO, Kolade IO, Bajomo ET, Adegoke A. Response of broilers to dietary inclusion of atoxigenic Aspergillus flavus strain as a biocontrol strategy of aflatoxin. Avian Pathol 2024; 53:218-225. [PMID: 38318791 DOI: 10.1080/03079457.2024.2316025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 02/03/2024] [Indexed: 02/07/2024]
Abstract
The objective of this trial was to evaluate how broilers responded to Aspergillus flavus strains that are toxigenic and atoxigenic. The study included four treatments in a 2 × 2 factorial design, with six replicates of 10 birds each. As a result of this study measuring feed intake (FI), weight gain (WG), feed conversion ratio (FCR), crude protein, ether extract, and crude fibre, the interaction was insignificant between the toxigenic and atoxigenic diets (P > 0.05). Consumption of toxigenic aflatoxin B1-500 ppb diet decreased FI and WG but increased FCR, and cost to produce live broiler weight (P < 0.05) compared to the control diets. The addition of atoxigenic strains to contaminated diets significantly offset (P < 0.05) the effects. Diets with or without 500 ppb toxigenic and atoxigenic A. flavus did not affect the relative weight g/100gBW of pancreas, gizzard and bursa of Fabricius. Dietary inclusion of 500 ppb toxigenic Aspergillus spp. increased the relative weight (P < 0.05) of the kidney, liver, spleen and thymus while atoxigenic dietary addition reduced the relative weight of the same organs (P < 0.05). Dietary inclusion of toxigenic and atoxigenic Aspergillus spp. did not significantly affect the haematological parameters measured (P < 0.05). Dietary inclusion of 500 ppb toxigenic Aspergillus elevated the urea, creatine, alanine aminotransferase (ALT), aspartate aminotransferase (AST) and alkaline phosphatase (ALP) in the serum of the broilers (P < 0.05). A decrease was observed when atox igenic A. flavus was used in the intervention for urea, creatinine and AST (P < 0.05), whereas an insignificant reduction was observed for ALT and ALP (P ≤ 0.05). This study concluded that dietary atoxigenic strain improved broiler performance, digestibility, and blood parameters.
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Affiliation(s)
- Abiola Olayemi Salako
- Faculty of Agriculture, Department of Animal Production, University of Ilorin, Ilorin, Nigeria
| | - Job Olutimehin Atteh
- Faculty of Agriculture, Department of Animal Production, University of Ilorin, Ilorin, Nigeria
| | - Taiwo Oladoye Akande
- Faculty of Agriculture, Department of Animal Science, Obafemi Awolowo University, Ile Ife, Nigeria
| | - Isiaka Oyeniyi Kolade
- Faculty of Agriculture, Department of Animal Production, University of Ilorin, Ilorin, Nigeria
| | - Eunice Tayo Bajomo
- Faculty of Agriculture, Department of Animal Production, University of Ilorin, Ilorin, Nigeria
| | - Adejoke Adegoke
- Faculty of Agriculture, Department of Animal Science, Obafemi Awolowo University, Ile Ife, Nigeria
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Pierron A, Kleber A, Mayer E, Gerner W. Effect of DON and ZEN and their metabolites DOM-1 and HZEN on B cell proliferation and antibody production. Front Immunol 2024; 15:1338937. [PMID: 38449861 PMCID: PMC10915041 DOI: 10.3389/fimmu.2024.1338937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 01/24/2024] [Indexed: 03/08/2024] Open
Abstract
Introduction The mycotoxins deoxynivalenol (DON) and zearalenone (ZEN), produced by Fusarium fungi, are frequently found in the cereal-rich diet of pigs and can modulate the immune system. Some enzymes or bacteria present in the digestive tract can de-epoxydize DON to deepoxy-deoxynivalenol (DOM-1) and biotransform ZEN into hydrolyzed ZEN (HZEN). The effects of these metabolites on immune cells, particularly with respect to the vaccine responses, are poorly documented. The aim of this study was to address the impact of DON and ZEN and their respective derivatives, on proliferation, and antibody production of porcine B cells in vitro. Methods Peripheral blood mononuclear cells (PBMCs), isolated from healthy pigs, were stimulated with the Toll-like receptor (TLR) 7/8-agonist Resiquimod (R848) or the TLR/1/2-agonist Pam3Cys-SKKKK in combination with DON [0.1-1.6 µM] or DOM-1 [1.6 µM and 16 µM] and ZEN [2.5-40 µM] or HZEN [40 µM]. Results A strong decrease in B-cell proliferation was observed at DON concentrations equal to or exceeding 0.8 µM and at ZEN concentrations equal to or exceeding 20 µM. Treatment with 1.6 µM DON or 40 µM ZEN led to almost a complete loss of live CD79α+ B cells. Moreover, CD21 expression of proliferating IgG+ and IgM+ B-cell subsets was decreased at DON concentrations equal to and exceeding 0.4 µM and at ZEN concentrations equal to or exceeding 10 µM. ELISpot assays revealed a decrease of IgG-secreting B cells at concentrations of and exceeding 0.4 µM and at ZEN concentrations equal to and exceeding 10 µM. ELISA assays showed a decrease of IgM, IgG, and IgA secretion at concentrations equal to or exceeding 0.4 µM DON. ZEN reduced IgM secretion at 20-40 µM (both R848 and Pam3Cys-SKKKK), IgG secretion at 40 µM (both R848 and Pam3Cys-SKKKK) and IgA secretion at 20-40 µM. Discussion Our in vitro experiments show that while DON and ZEN impair immunoglobulin production and B-cell proliferation, this effect is abrogated by HZEN and DOM-1.
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Affiliation(s)
- Alix Pierron
- Department of Pathobiology, Institute of Immunology, University of Veterinary Medicine, Vienna, Austria
| | - Alexandra Kleber
- dsm-firmenich, Animal Nutrition and Health R&D Center, Tulln, Austria
| | - Elisabeth Mayer
- dsm-firmenich, Animal Nutrition and Health R&D Center, Tulln, Austria
| | - Wilhelm Gerner
- Department of Pathobiology, Institute of Immunology, University of Veterinary Medicine, Vienna, Austria
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Al-Mutairi MH, Alzahrani K, Dabiah AT, Kassem HS. Adoption of on-farm feed safety practices among livestock farmers: Evidence from Saudi Arabia. Heliyon 2023; 9:e22838. [PMID: 38125446 PMCID: PMC10730586 DOI: 10.1016/j.heliyon.2023.e22838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 09/17/2023] [Accepted: 11/20/2023] [Indexed: 12/23/2023] Open
Abstract
Compliance with feed safety standards and practices on the farm promotes sustainable livestock production and can positively affect the environment and human health. This study aims to examine farmers' on-farm adoption of feed safety practices and determine the differences in adoption according to the socio-economic characteristics of farmers. An online survey was conducted to collect the study data. The study participants consisted of 442 livestock farmers in Riyadh region, Saudi Arabia. The study findings revealed that farmers highly adopted categories of feed purchasing (77.9 %) and feed mixing and distribution (75.05 %), whereas they were considered as a moderate level adoption regarding feed storing (70.9 %). The cluster analysis results showed two main patterns of adoption- "high adopters" and "moderate adopters"-based on the average level of adoption for 25 feed safety practices examined. The cluster of "high adopters" accounted for 59.9 % of the sample and had higher average adoption in all practices examined. The findings revealed that there are significant differences between the two segments of farmers, corresponding to gender, membership in livestock association, extension contact, raising sheep, and feeding system. This study proposes the regular monitoring of farms to ensure strict adherence to feed safety regulations, with the implementation of awareness and capacity development initiatives pertaining to feed safety concerns.
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Affiliation(s)
- Mansour H. Al-Mutairi
- Department of Agricultural Extension and Rural Community, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia
| | - Khodran Alzahrani
- Department of Agricultural Extension and Rural Community, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia
| | - Abdulaziz Thabet Dabiah
- Department of Agricultural Extension and Rural Community, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia
| | - Hazem S. Kassem
- Department of Agricultural Extension and Rural Community, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia
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Nji QN, Babalola OO, Ekwomadu TI, Nleya N, Mwanza M. Six Main Contributing Factors to High Levels of Mycotoxin Contamination in African Foods. Toxins (Basel) 2022; 14:318. [PMID: 35622564 PMCID: PMC9146326 DOI: 10.3390/toxins14050318] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/17/2022] [Accepted: 04/18/2022] [Indexed: 01/12/2023] Open
Abstract
Africa is one of the regions with high mycotoxin contamination of foods and continues to record high incidences of liver cancers globally. The agricultural sector of most African countries depends largely on climate variables for crop production. Production of mycotoxins is climate-sensitive. Most stakeholders in the food production chain in Africa are not aware of the health and economic effects of consuming contaminated foods. The aim of this review is to evaluate the main factors and their degree of contribution to the high levels of mycotoxins in African foods. Thus, knowledge of the contributions of different factors responsible for high levels of these toxins will be a good starting point for the effective mitigation of mycotoxins in Africa. Google Scholar was used to conduct a systemic search. Six factors were found to be linked to high levels of mycotoxins in African foods, in varying degrees. Climate change remains the main driving factor in the production of mycotoxins. The other factors are partly man-made and can be manipulated to become a more profitable or less climate-sensitive response. Awareness of the existence of these mycotoxins and their economic as well as health consequences remains paramount. The degree of management of these factors regarding mycotoxins varies from one region of the world to another.
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Affiliation(s)
- Queenta Ngum Nji
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2735, South Africa; (Q.N.N.); (T.I.E.); (N.N.); (M.M.)
| | - Olubukola Oluranti Babalola
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2735, South Africa; (Q.N.N.); (T.I.E.); (N.N.); (M.M.)
| | - Theodora Ijeoma Ekwomadu
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2735, South Africa; (Q.N.N.); (T.I.E.); (N.N.); (M.M.)
- Department of Animal Health, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2735, South Africa
| | - Nancy Nleya
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2735, South Africa; (Q.N.N.); (T.I.E.); (N.N.); (M.M.)
- Department of Animal Health, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2735, South Africa
| | - Mulunda Mwanza
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2735, South Africa; (Q.N.N.); (T.I.E.); (N.N.); (M.M.)
- Department of Animal Health, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2735, South Africa
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Xu F, Baker R, Whitaker T, Luo H, Zhao Y, Stevenson A, Boesch C, Zhang G. Review of good agricultural practices for smallholder maize farmers to minimise aflatoxin contamination. WORLD MYCOTOXIN J 2021. [DOI: 10.3920/wmj2021.2685] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Maize is consumed world-wide as staple food, livestock feed, and industrial raw material. However, it is susceptible to fungal attack and at risk of aflatoxin contamination under certain conditions. Such contamination is a serious threat to human and animal health. Ensuring that the maize used by food industry meets standards for aflatoxin levels requires significant investment across the supply chain. Good Agricultural Practices (GAP) form a critical part of a broader, integrated strategy for reduction of aflatoxin contamination. We reviewed and summarised the GAP of maize that would be effective and practicable for aflatoxin control within high-risk regions for smallholder farmers. The suggested practicable GAP for smallholder farmers were: use of drought-tolerant varieties; timely harvesting before physiological maturity; sorting to remove damaged ears and those having poor husk covering; drying properly to 13% moisture content; storage in suitable conditions to keep the crop clean and under condition with minimally proper aeration, or ideally under hermetic conditions. This information is intended to provide guidance for maize growers that will help reduce aflatoxin in high-risk regions, with a specific focus on smallholder farmers. Following the proposed guidelines would contribute to the reduction of aflatoxin contamination during pre-harvest, harvest, and post-harvest stages of the maize value chain.
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Affiliation(s)
- F. Xu
- Mars Global Food Safety Center, 2 Yanqi North Road, Yanqi Economic Development Zone, Huairou, 101407 Beijing, China P.R
| | - R.C. Baker
- Mars Global Food Safety Center, 2 Yanqi North Road, Yanqi Economic Development Zone, Huairou, 101407 Beijing, China P.R
| | - T.B. Whitaker
- North Carolina State University, P.O. Box 7625, Raleigh, NC 27695-7625, USA
| | - H. Luo
- Mars Global Food Safety Center, 2 Yanqi North Road, Yanqi Economic Development Zone, Huairou, 101407 Beijing, China P.R
| | - Y. Zhao
- Mars Global Food Safety Center, 2 Yanqi North Road, Yanqi Economic Development Zone, Huairou, 101407 Beijing, China P.R
| | - A. Stevenson
- Mars Global Food Safety Center, 2 Yanqi North Road, Yanqi Economic Development Zone, Huairou, 101407 Beijing, China P.R
| | - C.J. Boesch
- Food Systems and Food Safety Division, Food and Agriculture Organization of the United Nations (FAO), Viale delle Terme di Caracalla, 00153 Rome, Italy
| | - G. Zhang
- Mars Global Food Safety Center, 2 Yanqi North Road, Yanqi Economic Development Zone, Huairou, 101407 Beijing, China P.R
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Habschied K, Krstanović V, Zdunić Z, Babić J, Mastanjević K, Šarić GK. Mycotoxins Biocontrol Methods for Healthier Crops and Stored Products. J Fungi (Basel) 2021; 7:348. [PMID: 33946920 PMCID: PMC8145935 DOI: 10.3390/jof7050348] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 04/23/2021] [Accepted: 04/27/2021] [Indexed: 12/27/2022] Open
Abstract
Contamination of crops with phytopathogenic genera such as Fusarium, Aspergillus, Alternaria, and Penicillium usually results in mycotoxins in the stored crops or the final products (bread, beer, etc.). To reduce the damage and suppress the fungal growth, it is common to add antifungal substances during growth in the field or storage. Many of these antifungal substances are also harmful to human health and the reduction of their concentration would be of immense importance to food safety. Many eminent researchers are seeking a way to reduce the use of synthetic antifungal compounds and to implement more eco-friendly and healthier bioweapons against fungal proliferation and mycotoxin synthesis. This paper aims to address the recent advances in the effectiveness of biological antifungal compounds application against the aforementioned fungal genera and their species to enhance the protection of ecological and environmental systems involved in crop growing (water, soil, air) and to reduce fungicide contamination of food derived from these commodities.
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Affiliation(s)
- Kristina Habschied
- Faculty of Food Technology, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia; (V.K.); (J.B.)
| | - Vinko Krstanović
- Faculty of Food Technology, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia; (V.K.); (J.B.)
| | - Zvonimir Zdunić
- Agricultural Institute Osijek, Južno predgrađe 17, 31000 Osijek, Croatia;
| | - Jurislav Babić
- Faculty of Food Technology, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia; (V.K.); (J.B.)
| | - Krešimir Mastanjević
- Faculty of Food Technology, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia; (V.K.); (J.B.)
| | - Gabriella Kanižai Šarić
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia;
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Mutiga SK, Mutuku JM, Koskei V, Gitau JK, Ng’ang’a F, Musyoka J, Chemining’wa GN, Murori R. Multiple Mycotoxins in Kenyan Rice. Toxins (Basel) 2021; 13:toxins13030203. [PMID: 33799626 PMCID: PMC7998506 DOI: 10.3390/toxins13030203] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/20/2021] [Accepted: 02/23/2021] [Indexed: 11/16/2022] Open
Abstract
Multiple mycotoxins were tested in milled rice samples (n = 200) from traders at different milling points within the Mwea Irrigation Scheme in Kenya. Traders provided the names of the cultivar, village where paddy was cultivated, sampling locality, miller, and month of paddy harvest between 2018 and 2019. Aflatoxin, citrinin, fumonisin, ochratoxin A, diacetoxyscirpenol, T2, HT2, and sterigmatocystin were analyzed using ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC–MS/MS). Deoxynivalenol was tested using enzyme-linked immunosorbent assay (ELISA). Mycotoxins occurred in ranges and frequencies in the following order: sterigmatocystin (0–7 ppb; 74.5%), aflatoxin (0–993 ppb; 55.5%), citrinin (0–9 ppb; 55.5%), ochratoxin A (0–110 ppb; 30%), fumonisin (0–76 ppb; 26%), diacetoxyscirpenol (0–24 ppb; 20.5%), and combined HT2 + T2 (0–62 ppb; 14.5%), and deoxynivalenol was detected in only one sample at 510 ppb. Overall, low amounts of toxins were observed in rice with a low frequency of samples above the regulatory limits for aflatoxin, 13.5%; ochratoxin A, 6%; and HT2 + T2, 0.5%. The maximum co-contamination was for 3.5% samples with six toxins in different combinations. The rice cultivar, paddy environment, time of harvest, and millers influenced the occurrence of different mycotoxins. There is a need to establish integrated approaches for the mitigation of mycotoxin accumulation in the Kenyan rice.
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Affiliation(s)
- Samuel K. Mutiga
- Biosciences Eastern and Central Africa, International Livestock Research Institute (BecA-ILRI) Hub, P.O. BOX 30709, 00100 Nairobi, Kenya; (J.M.M.); (F.N.); (J.M.)
- Department of Entomology & Plant Pathology, University of Arkansas, Fayetteville, AR 72701, USA
- Correspondence: (S.K.M.); (R.M.)
| | - J. Musembi Mutuku
- Biosciences Eastern and Central Africa, International Livestock Research Institute (BecA-ILRI) Hub, P.O. BOX 30709, 00100 Nairobi, Kenya; (J.M.M.); (F.N.); (J.M.)
| | - Vincent Koskei
- National Irrigation Authority (NIA), P.O. Box 210, 10303 Wang’uru, Kenya;
| | - James Kamau Gitau
- Department of Plant Science and Crop Protection, University of Nairobi, P.O. BOX 29053, 00625 Nairobi, Kenya; (J.K.G.); (G.N.C.)
| | - Fredrick Ng’ang’a
- Biosciences Eastern and Central Africa, International Livestock Research Institute (BecA-ILRI) Hub, P.O. BOX 30709, 00100 Nairobi, Kenya; (J.M.M.); (F.N.); (J.M.)
| | - Joyce Musyoka
- Biosciences Eastern and Central Africa, International Livestock Research Institute (BecA-ILRI) Hub, P.O. BOX 30709, 00100 Nairobi, Kenya; (J.M.M.); (F.N.); (J.M.)
| | - George N. Chemining’wa
- Department of Plant Science and Crop Protection, University of Nairobi, P.O. BOX 29053, 00625 Nairobi, Kenya; (J.K.G.); (G.N.C.)
| | - Rosemary Murori
- International Rice Research Institute, Eastern and Southern African Region Office, P.O. BOX 30709, 00100 Nairobi, Kenya
- Correspondence: (S.K.M.); (R.M.)
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Abstract
Mycotoxins are secondary metabolites of microscopic fungi, which commonly contaminate cereal grains. Contamination of small-grain cereals and maize with toxic metabolites of fungi, both pathogenic and saprotrophic, is one of the particularly important problems in global agriculture. Fusarium species are among the dangerous cereal pathogens with a high toxicity potential. Secondary metabolites of these fungi, such as deoxynivalenol, zearalenone and fumonisin B1 are among five most important mycotoxins on a European and world scale. The use of various methods to limit the development of Fusarium cereal head diseases and grain contamination with mycotoxins, before and after harvest, is an important element of sustainable agriculture and production of safe food. The applied strategies utilize chemical and non-chemical methods, including agronomic, physical and biological treatments. Biological methods now occupy a special place in plant protection as an element of biocontrol of fungal pathogens by inhibiting their development and reducing mycotoxins in grain. According to the literature, Good Agricultural Practices are the best line of defense for controlling Fusarium toxin contamination of cereal and maize grains. However, fluctuations in weather conditions can significantly reduce the effectiveness of plants protection methods against infection with Fusarium spp. and grain accumulation of mycotoxins.
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