1
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Saghir SA, Ansari RA. HLA gene variations and mycotoxin toxicity: Four case reports. Mycotoxin Res 2024; 40:159-173. [PMID: 38198040 DOI: 10.1007/s12550-023-00517-y] [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: 08/03/2023] [Revised: 12/18/2023] [Accepted: 12/22/2023] [Indexed: 01/11/2024]
Abstract
Mycotoxins are produced by certain molds that can cause many health effects. We present four human cases of prolonged consistent mycotoxins exposure linked to genetic variations in human leukocyte antigen (HLA) alleles. The HLA-DR/DQ isotype alleles are linked to mycotoxins susceptibility due to the lack of proper immune response; individuals with these alleles are poor eliminators of mycotoxins from their system. Four subjects with variations in their HLA-DR alleles were exposed to mycotoxins from living in mold-infested houses and experienced persistent mold-related symptoms long after moving out from the mold-infested houses and only exposed to the levels of molds found in the ambient air. From one of the subjects, two urine samples were collected ~ 18 months apart after the cessation of exposure. Urinary elimination rate was extremely slow for two of the mycotoxins (ochratoxin A [OTA] and mycophenolic acid [MPA]) detected in both samples. In 18 months, decline in OTA level was only ~ 3-fold (estimated t½ of ~ 311 days) and decline in MPA level was ~ 11-fold (estimated t½ of ~ 160 days), which was ~ 10- and ~ 213-fold slower than expected in individuals without HLA-DR alleles, respectively. We estimated that ~ 4.3 and ~ 2.2 years will be required for OTA and MPA to reach < LLQ in urine, respectively. Three other subjects with variations in HLA-DR alleles were members of a family who lived in a mold-infested house for 4 years. They kept experiencing mold-related issues >2 years after moving to a non-mold-infested house. Consistent exposure was confirmed by the presence of several mycotoxins in urine >2 years after the secession of higher than background (from outdoor ambient air) exposure. This was consistent with the extremely slow elimination of mycotoxins from their system. Variations in HLA-DR alleles can, consequently, make even short periods of exposure to chronic exposure scenarios with related adverse health effects. It is, therefore, important to determine genetic predisposition as a reason for prolonged/lingering mold-related symptoms long after the cessation of higher than background exposure. Increased human exposure to mycotoxins is expected from increased mold infestation that is anticipated due to rising CO2, temperature, and humidity from the climate change with possibly increased adverse health effects, especially in individuals with genetic susceptibility to mold toxicity.
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Affiliation(s)
- Shakil Ahmed Saghir
- ToxInternational Inc, Hilliard, OH, USA.
- Mold Law Group, Atlanta, GA, USA.
- Department of Biological & Biomedical Sciences, Aga Khan Univ, Karachi, Pakistan.
- Institute of Environmental Science and Meteorology, College of Science, University of the Philippines-Diliman, Quezon City, Philippines.
| | - Rais Ahmed Ansari
- Department of Pharmaceutical Sciences, Barry and Judy Silverman College of Pharmacy, Health Professions Division, Nova Southeastern University, Fort Lauderdale, FL, USA
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2
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Wang R, Huang N, Ji J, Chen C. An integrated approach for evaluating the interactive effects between azoxystrobin and ochratoxin A: Pathway-based in vivo analyses. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 195:105556. [PMID: 37666592 DOI: 10.1016/j.pestbp.2023.105556] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/20/2023] [Accepted: 07/24/2023] [Indexed: 09/06/2023]
Abstract
Azoxystrobin (AZO) is a broad-spectrum strobilurin fungicide widely used in agriculture. However, its use increases the possibility of co-occurrence with mycotoxins such as ochratoxin A (OTA), which poses a significant risk to human health. Therefore, it is imperative to prioritize the evaluation of the combined toxicity of these two compounds. To assess the combined effects of AZO and OTA, the response genes and phenotypes for AZO or OTA exposure were obtained by utilizing Comparative Toxicogenomics Database, and Database for Annotation, Visualization and Integrated Discovery was used for GO and KEGG pathway enrichment analysis. In addition, we provided in-vivo evidence that AZO and OTA, in isolation and combination, could disrupt a variety of biological processes, such as oxidative stress, inflammatory response, apoptosis and thyroid hormone regulation under environmentally relevant concentrations. Notably, our findings suggest that the combined exposure group exhibited greater toxicity, as evidenced by the expression of various markers associated with the aforementioned biological processes, compared to the individual exposure group, which presents potential targets for the underlying mechanisms of induced toxicity. This study provides a novel methodological approach for exploring the mechanism of combined toxicity of a fungicide and a mycotoxin, which can shed light for conducting risk assessment of foodborne toxins.
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Affiliation(s)
- Ruike Wang
- School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China
| | - Nan Huang
- School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China
| | - Jing Ji
- School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China
| | - Chen Chen
- School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China.
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3
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Yang L, Yang L, Cai Y, Luo Y, Wang H, Wang L, Chen J, Liu X, Wu Y, Qin Y, Wu Z, Liu N. Natural mycotoxin contamination in dog food: A review on toxicity and detoxification methods. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 257:114948. [PMID: 37105098 DOI: 10.1016/j.ecoenv.2023.114948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 04/05/2023] [Accepted: 04/21/2023] [Indexed: 05/08/2023]
Abstract
Nowadays, the companion animals (dogs or other pets) are considered as members of the family and have established strong emotional relationships with their owners. Dogs are long lived compared to food animals, so safety, adequacy, and efficacy of dog food is of great importance for their health. Cereals, cereal by-products as well as feedstuffs of plant origin are commonly employed food resources in dry food, yet are potential ingredients for mycotoxins contamination, so dogs are theoretically more vulnerable to exposure when consumed daily. Aflatoxins (AF), deoxynivalenol (DON), fumonisins (FUM), ochratoxin A (OTA), and zearalenone (ZEA) are the most frequent mycotoxins that might present in dog food and cause toxicity on the growth and metabolism of dogs. An understanding of toxicological effects and detoxification methods (physical, chemical, or biological approaches) of mycotoxins will help to improve commercial ped food quality, reduce harm and minimize exposure to dogs. Herein, we outline a description of mycotoxins detected in dog food, toxicity and clinical findings in dogs, as well as methods applied in mycotoxins detoxification. This review aims to provide a reference for future studies involved in the evaluation of the risk, preventative strategies, and clear criteria of mycotoxins for minimizing exposure, reducing harm, and preventing mycotoxicosis in dog.
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Affiliation(s)
- Ling Yang
- Department of Food and Bioengineering, Beijing Vocational College of Agriculture, Beijing 102442, China
| | - Lihan Yang
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Yuqing Cai
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Yifei Luo
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Hui Wang
- Department of Food and Bioengineering, Beijing Vocational College of Agriculture, Beijing 102442, China
| | - Li Wang
- Department of Food and Bioengineering, Beijing Vocational College of Agriculture, Beijing 102442, China
| | - Jingqing Chen
- Laboratory Animal Center of the Academy of Military Medical Sciences, Beijing 100071, China
| | - Xiaoming Liu
- College of Animal Science and Technology, Shandong Agricultural University, China
| | - Yingjie Wu
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Yinghe Qin
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Zhenlong Wu
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Ning Liu
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
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4
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Singh A, Singh G, Kaur N, Singh N. Quantitative and qualitative analysis of ochratoxin-A using fluorescent CQDs@DNA-based nanoarchitecture assembly to monitor food safety and quality. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:1826-1835. [PMID: 36971227 DOI: 10.1039/d3ay00209h] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Ochratoxin A (OTA), a mycotoxin formed by various fungi, such as Aspergillus and Penicillium species, is dangerous to human health. Thus, to circumvent the risk of OTA ingestion, the recognition and quantification of OTA levels are of great significance. A perusal of the literature has revealed that the integration of DNA/Carbon Quantum Dot (CQD)-based hybrid systems may exhibit the unique electronic and optical properties of nanomaterials/nanoarchitecture and consequent recognition properties. Herein, we developed the CQDs@DNA-based hybrid nanoarchitecture system for the selective detection of OTA, which exhibits modulation in the emission spectrum after interaction with OTA, with a significant binding constant (Ka = 3.5 × 105 M-1), a limit of detection of 14 nM, limit of quantification of 47 nM and working range of 1-10 μM. The mechanism for sensing the OTA has been corroborated using fluorescence, UV-visible absorption spectroscopy, and FTIR techniques, demonstrating the binding mode of CQD@DNA hybrid nano-architecture assembly with OTA. Further, we demonstrated the sensing ability of developed CQDs@DNA-based nanoarchitecture assembly towards the quantification of OTA in real food monitoring analysis for real-time applications, which makes this developed nanoarchitecture assembly the potential candidate to conveniently monitor food safety and quality for human health.
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Affiliation(s)
- Amanpreet Singh
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, 140001, Punjab, India.
| | - Gagandeep Singh
- Department of Biomedical Engineering, Indian Institute of Technology Ropar, Rupnagar, 140001, Punjab, India
| | - Navneet Kaur
- Department of Chemistry, Panjab University, Chandigarh, 160014, Punjab, India.
| | - Narinder Singh
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, 140001, Punjab, India.
- Department of Biomedical Engineering, Indian Institute of Technology Ropar, Rupnagar, 140001, Punjab, India
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Hu R, Shi J, Tian C, Chen X, Zuo H. Nucleic Acid Aptamers for Pesticides, Toxins, and Biomarkers in Agriculture. Chempluschem 2022; 87:e202200230. [PMID: 36410759 DOI: 10.1002/cplu.202200230] [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: 07/11/2022] [Revised: 10/17/2022] [Indexed: 01/31/2023]
Abstract
Nucleic acid aptamers are short single-stranded DNA/RNA (ssDNA/RNA) oligonucleotides that can selectively bind to the targets. They are widely used in medicine, biosensing, and diagnostic assay. They have also been identified and extensively used for various targets in agriculture. In this review we summarize the progress of nucleic acid aptamers on pesticides (herbicides, insecticides, and fungicides), toxins, specific biomarkers of crops, and plant growth regulators in agricultural field in recent years. The basic process of aptamer selection, the already identified DNA/RNA aptamers and the aptasensors are discussed. We also discuss the future perspectives and the challenges for aptamer development in agriculture.
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Affiliation(s)
- Rongping Hu
- Sichuan Institute of Edible Fungi, Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan, 610066, P. R. China
| | - Jun Shi
- Mianyang Academy of Agricultural Sciences, Crop Characteristic Resources Creation, and Utilization Key Laboratory of Sichuan Province, Mianyang, Sichuan, 621023 (P. R., China
| | - Cheng Tian
- Key Laboratory of Luminescence Analysis, and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, P. R. China
| | - Xiaojuan Chen
- Sichuan Institute of Edible Fungi, Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan, 610066, P. R. China
| | - Hua Zuo
- Key Laboratory of Luminescence Analysis, and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, P. R. China
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6
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Jin J, Beekmann K, Ringø E, Rietjens IM, Xing F. Interaction between food-borne mycotoxins and gut microbiota: A review. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.107998] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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7
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Behrens M, Hüwel S, Galla HJ, Humpf HU. Efflux at the Blood-Brain Barrier Reduces the Cerebral Exposure to Ochratoxin A, Ochratoxin α, Citrinin and Dihydrocitrinone. Toxins (Basel) 2021; 13:toxins13050327. [PMID: 33946578 PMCID: PMC8147254 DOI: 10.3390/toxins13050327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 04/26/2021] [Accepted: 04/29/2021] [Indexed: 11/16/2022] Open
Abstract
Recent studies have implied that environmental toxins, such as mycotoxins, are risk factors for neurodegenerative diseases. To act directly as neurotoxins, mycotoxins need to penetrate or affect the integrity of the blood-brain barrier, which protects the mammalian brain from potentially harmful substances. As common food and feed contaminants of fungal origin, the interest in the potential neurotoxicity of ochratoxin A, citrinin and their metabolites has recently increased. Primary porcine brain capillary endothelial cells were used to investigate cytotoxic or barrier-weakening effects of ochratoxin A, ochratoxin α, citrinin and dihydrocitrinone. The transfer and transport properties of the mycotoxins across the barrier formed by porcine brain capillary endothelial cell monolayers were analysed using HPLC-MS/MS. High levels of Ochratoxin A caused cytotoxic and barrier-weakening effects, whereas ochratoxin α, citrinin and dihydrocitrinone showed no adverse effects up to 10 µM. Likely due to efflux transporter proteins, the transfer to the brain compartment was much slower than expected from their high lipophilicity. Due to their slow transfer across the blood-brain barrier, cerebral exposure of ochratoxin A, ochratoxin α, citrinin and dihydrocitrinone is low and neurotoxicity is likely to play a subordinate role in their toxicity at common physiological concentrations.
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Affiliation(s)
- Matthias Behrens
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany;
| | - Sabine Hüwel
- Institute of Biochemistry, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany; (S.H.); (H.-J.G.)
| | - Hans-Joachim Galla
- Institute of Biochemistry, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany; (S.H.); (H.-J.G.)
| | - Hans-Ulrich Humpf
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany;
- Correspondence:
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8
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Li P, Su R, Yin R, Lai D, Wang M, Liu Y, Zhou L. Detoxification of Mycotoxins through Biotransformation. Toxins (Basel) 2020; 12:toxins12020121. [PMID: 32075201 PMCID: PMC7076809 DOI: 10.3390/toxins12020121] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/08/2020] [Accepted: 02/12/2020] [Indexed: 01/18/2023] Open
Abstract
Mycotoxins are toxic fungal secondary metabolites that pose a major threat to the safety of food and feed. Mycotoxins are usually converted into less toxic or non-toxic metabolites through biotransformation that are often made by living organisms as well as the isolated enzymes. The conversions mainly include hydroxylation, oxidation, hydrogenation, de-epoxidation, methylation, glycosylation and glucuronidation, esterification, hydrolysis, sulfation, demethylation and deamination. Biotransformations of some notorious mycotoxins such as alfatoxins, alternariol, citrinin, fomannoxin, ochratoxins, patulin, trichothecenes and zearalenone analogues are reviewed in detail. The recent development and applications of mycotoxins detoxification through biotransformation are also discussed.
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Affiliation(s)
- Peng Li
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China; (P.L.); (R.S.); (R.Y.); (D.L.)
| | - Ruixue Su
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China; (P.L.); (R.S.); (R.Y.); (D.L.)
| | - Ruya Yin
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China; (P.L.); (R.S.); (R.Y.); (D.L.)
| | - Daowan Lai
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China; (P.L.); (R.S.); (R.Y.); (D.L.)
| | - Mingan Wang
- Department of Applied Chemistry, College of Sciences, China Agricultural University, Beijing 100193, China;
| | - Yang Liu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
| | - Ligang Zhou
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China; (P.L.); (R.S.); (R.Y.); (D.L.)
- Correspondence: ; Tel.: +86-10-6273-1199
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9
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Nan M, Bi Y, Xue H, Xue S, Long H, Pu L, Fu G. Rapid Determination of Ochratoxin A in Grape and Its Commodities Based on a Label-Free Impedimetric Aptasensor Constructed by Layer-by-Layer Self-Assembly. Toxins (Basel) 2019; 11:toxins11020071. [PMID: 30696025 PMCID: PMC6410112 DOI: 10.3390/toxins11020071] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 01/22/2019] [Accepted: 01/22/2019] [Indexed: 01/21/2023] Open
Abstract
A simple and sensitive label-free impedimetric aptasensor for rapid determination of ochratoxin A (OTA) has been developed, which was based on the combination between thiolated aptamer and gold nanoparticles by layer-by-layer self-assembly. Because of the interaction between aptamer and OTA, the relative normalized electron-transfer resistance (ΔRct) values obtained by electrochemical impedance spectroscopy (EIS) was proportional to the concentration of OTA and showed a good linear relationship from 0.1 to 10.0 ng/mL, with a lower detection limit (0.030 ng/mL) than one-step thiolated DNA aptasensor. The established method was successfully applied to detect and analyze OTA in table wine and grape juice, and the recovery was 90.56%–104.21% when PVP effective removed of phenolic substances. The label-free impedimetric aptasensor was used for rapid detection and quantitation of OTA in the inoculated grapes with the Aspergillus Nigri (H1), and the production of OTA (62.4 μg/kg, 20 μg/kg) far exceeded the maximum levels of 2 μg/kg after inoculation for three days. The developed method exhibited a good specificity, high sensitivity, time-efficient, and it could be applied to detect the OTA concentration in grape and its commodities.
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Affiliation(s)
- Mina Nan
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.
| | - Yang Bi
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China.
| | - Huali Xue
- College of Science, Gansu Agricultural University, Lanzhou 730070, China.
| | - Sulin Xue
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.
| | - Haitao Long
- College of Science, Gansu Agricultural University, Lanzhou 730070, China.
| | - Lumei Pu
- College of Science, Gansu Agricultural University, Lanzhou 730070, China.
| | - Guorui Fu
- College of Science, Gansu Agricultural University, Lanzhou 730070, China.
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10
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Isolation of lactic acid bacteria from grape fruit: antifungal activities, probiotic properties, and in vitro detoxification of ochratoxin A. ANN MICROBIOL 2018. [DOI: 10.1007/s13213-018-1359-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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11
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Wei D, Wu X, Xu J, Dong F, Liu X, Zheng Y, Ji M. Determination of Ochratoxin A contamination in grapes, processed grape products and animal-derived products using ultra-performance liquid chromatography-tandem mass spectroscopy system. Sci Rep 2018; 8:2051. [PMID: 29391603 PMCID: PMC5794868 DOI: 10.1038/s41598-018-20534-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 01/18/2018] [Indexed: 11/08/2022] Open
Abstract
We developed a sensitive and rapid analytical method to determine the level of Ochratoxin A contamination in grapes, processed grape products and in foods of animal origin (a total of 11 different food matrices). A pretreatment that followed a "quick, easy, cheap, effective, rugged, and safe" protocol was optimized to extract Ochratoxin A from the matrices, and the extracted Ochratoxin A was then detected with the use of a highly sensitive ultra-performance liquid chromatography-tandem mass spectrometry system. Good linearities of Ochratoxin A were obtained in the range of 0.1-500 µg L-1 (correlation coefficient (R2) > 0.9994 in each case). Mean recovery from the 11 matrices ranged from 70.3 to 114.7%, with a relative standard deviation ≤19.2%. The method is easy to use and yields reliable results for routine determination of Ochratoxin A in food products of grape and animal origin. In store-purchased foods and foods obtained from the field and wholesale suppliers, the Ochratoxin A concentration ranged from undetectable to 10.14 µg kg-1, with the more contaminated samples being mainly those of processed grape products. Our results indicate that the necessity for regulation of and supervision during the processing of grape products.
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Affiliation(s)
- Dongmei Wei
- College of Plant Protection, Shenyang Agricultural University, Shenyang, 110161, China
- Risk Assessment Laboratory for biological hazards of agricultural product quality and safety, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Xiaohu Wu
- Risk Assessment Laboratory for biological hazards of agricultural product quality and safety, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Jun Xu
- Risk Assessment Laboratory for biological hazards of agricultural product quality and safety, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Fengshou Dong
- Risk Assessment Laboratory for biological hazards of agricultural product quality and safety, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Xingang Liu
- Risk Assessment Laboratory for biological hazards of agricultural product quality and safety, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Yongquan Zheng
- Risk Assessment Laboratory for biological hazards of agricultural product quality and safety, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
| | - Mingshan Ji
- College of Plant Protection, Shenyang Agricultural University, Shenyang, 110161, China.
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12
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Gan F, Hou L, Zhou Y, Liu Y, Huang D, Chen X, Huang K. Effects of ochratoxin A on ER stress, MAPK signaling pathway and autophagy of kidney and spleen in pigs. ENVIRONMENTAL TOXICOLOGY 2017; 32:2277-2286. [PMID: 28699257 DOI: 10.1002/tox.22443] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 06/18/2017] [Accepted: 06/19/2017] [Indexed: 06/07/2023]
Abstract
Ochratoxin A (OTA), a worldwide mycotoxin found in food and feeds, is a potent nephrotoxin and immunotoxin in animals and humans. This research was conducted to evaluate whether endoplasmic reticulum (ER) stress, MAPK signaling pathway and autophagy were induced by OTA in kidney and spleen of pigs. Twenty-seven crossbred pigs randomly allocated to 3 groups were fed for 42 days ad libitum a basal diet without (Con group, 0.00 μg OTA/kg) and with supplementation of OTA at 400 (OTA-L group) and 800 μg/kg (OTA-H group). From each group, 6 pigs were randomly selected for blood collection on days 0, 21, and 42 and 3 pigs were randomly selected for tissue collection on day 42. The results showed that OTA at 400 and 800 μg/kg diets significantly increased OTA concentrations in serum and kidney and spleen induced the histopathological lesions of kidney and spleen, decreased TCR-stimulated T lymphocyte viabilities and IL-2 concentration, increased TNF-α concentration, and decreased T-AOC levels. OTA increased glucose regulated protein 78, p38, and ERK1/2 phosphorylation, and LC3 II and Atg5 protein expression in kidney and spleen of pigs. These results provide new insights into the relationship between OTA and ER stress, p38 and ERK1/2 MAPK signaling pathway and autophagy in pigs.
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Affiliation(s)
- Fang Gan
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, China
- Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, China
| | - Lili Hou
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, China
- Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, China
| | - Yajiao Zhou
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, China
- Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, China
| | - Yunhuan Liu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, China
- Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, China
| | - Da Huang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, China
- Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, China
| | - Xingxiang Chen
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, China
- Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, China
| | - Kehe Huang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, China
- Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, China
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13
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Simão EP, Cao-Milán R, Costa-Pedro G, De Melo CP, Cao R, Oliveira MDL, Andrade CAS. Simple and Fast Picomolar Detection of Ochratoxin A Using a Reusable Label Free Aptasensor Built with a Layer-by-layer Procedure. ELECTROANAL 2017. [DOI: 10.1002/elan.201700290] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Estéfani P. Simão
- Departamento de Bioquímica; Universidade Federal de Pernambuco; Recife 50670-901 Brazil
| | | | - Graciela Costa-Pedro
- Programa de Pós-Graduação em Ciência de Materiais; Universidade Federal de Pernambuco; Recife 50670-901 Brazil
| | - Celso P. De Melo
- Departamento de Física; Universidade Federal de Pernambuco; Recife 50670-901 Brazil
| | - Roberto Cao
- Facultad de Química; Universidad de la Habana; Habana 10400 Cuba
| | - Maria D. L. Oliveira
- Departamento de Bioquímica; Universidade Federal de Pernambuco; Recife 50670-901 Brazil
| | - Cesar A. S. Andrade
- Departamento de Bioquímica; Universidade Federal de Pernambuco; Recife 50670-901 Brazil
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Sun Y, Xing G, Yang J, Wang F, Deng R, Zhang G, Hu X, Zhang Y. Development of an immunochromatographic test strip for simultaneous qualitative and quantitative detection of ochratoxin A and zearalenone in cereal. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2016; 96:3673-3678. [PMID: 26612142 DOI: 10.1002/jsfa.7550] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 10/13/2015] [Accepted: 11/22/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND Ochratoxin A (OTA) and zearalenone (ZEN) are natural products of filamentous fungi that are harmful to humans and animals exposed to them even in extremely low concentration. The immunochromatographic test strip has become a popular diagnostic tool for detecting analytes. Its major advantages are that results can be obtained within 5-10 min, all needed reagents are included in the strip and it can be used to detect OTA and ZEN contamination in spots. In this study a colloidal gold-based immunochromatographic test strip of competitive format was developed for the rapid simultaneous qualitative and quantitative detection of OTA and ZEN in corn and other cereals. RESULTS The test strip results with the naked eye showed that the sensitivities were 6 µg kg(-1) OTA and 20 µg kg(-1) ZEN in cereal, while those with a TSR3000 membrane strip reader showed that the IC50 values of OTA and ZEN were 1.7905 and 4.3514 ng mL(-1) and the lower detection limit (LDL) values were 0.7697 and 1.2000 µg kg(-1) respectively. These results were confirmed by high-performance liquid chromatography. CONCLUSION The immunochromatographic test strip developed in this study could be used for the rapid simultaneous, qualitative and quantitative screening of OTA and ZEN in corn samples. © 2015 Society of Chemical Industry.
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Affiliation(s)
- Yaning Sun
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, 730070, China
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China
| | - Guangxu Xing
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China
| | - Jifei Yang
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China
| | - Fangyu Wang
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China
| | - Ruiguang Deng
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China
| | - Gaiping Zhang
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China
| | - Xiaofei Hu
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China
| | - Yong Zhang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, 730070, China
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Chu X, Dou X, Liang R, Li M, Kong W, Yang X, Luo J, Yang M, Zhao M. A self-assembly aptasensor based on thick-shell quantum dots for sensing of ochratoxin A. NANOSCALE 2016; 8:4127-4133. [PMID: 26866394 DOI: 10.1039/c5nr08284f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A novel self-assembling aptasensor was fabricated by precisely attaching three phosphorothioate-modified capture aptamers onto a single thick-shell quantum dot in a controllable manner for monitoring of ochratoxin A (OTA), a poisonous contaminant widespread in foodstuffs. Herein, CdSe/CdS QDs coated in ten layer CdS shells were synthesized using a continual precursor injection method. Analysis of the prepared CdSe/CdS QDs showed a zinc-blende structure, high photoluminescence quantum yields (>80%), and a photoemission peak with a narrow full-width at half-maximum (about 29 nm), all qualities that render them as a superior choice for optical applications. By adjusting the number of phosphorothioate bases in the anchor domain, the tunable-valency aptasensor was able to self-assemble. In the sensing strategy, the thick-shell quantum dot was provided as an acceptor while OTA itself was used as a donor. In the presence of OTA, the capture aptamers drive the aptasensor function into a measurable signal through a fluorescence resonance energy transfer (FRET) system. The newly developed aptasensor had a detection limit as low as 0.5 ng mL(-1), with a linear concentration in the range of 1 to 30 ng mL(-1), and therefore meets the requirements for rapid, effective, and anti-interference sensors for real-world applications. Moreover, the high quality thick-shell QDs provide an ideal alternative for highly sensitive imaging and intensive illumination in the fields of biotechnology and bioengineering.
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Affiliation(s)
- Xianfeng Chu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China.
| | - Xiaowen Dou
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China.
| | - Ruizheng Liang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Menghua Li
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China.
| | - Weijun Kong
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China.
| | - Xihui Yang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China.
| | - Jiaoyang Luo
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China.
| | - Meihua Yang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China. and Institute of Hainan Branch of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Wanning 571533, China
| | - Ming Zhao
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, China
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16
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Liu R, Huang Y, Ma Y, Jia S, Gao M, Li J, Zhang H, Xu D, Wu M, Chen Y, Zhu Z, Yang C. Design and synthesis of target-responsive aptamer-cross-linked hydrogel for visual quantitative detection of ochratoxin A. ACS APPLIED MATERIALS & INTERFACES 2015; 7:6982-90. [PMID: 25771715 DOI: 10.1021/acsami.5b01120] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A target-responsive aptamer-cross-linked hydrogel was designed and synthesized for portable and visual quantitative detection of the toxin Ochratoxin A (OTA), which occurs in food and beverages. The hydrogel network forms by hybridization between one designed DNA strand containing the OTA aptamer and two complementary DNA strands grafting on linear polyacrylamide chains. Upon the introduction of OTA, the aptamer binds with OTA, leading to the dissociation of the hydrogel, followed by release of the preloaded gold nanoparticles (AuNPs), which can be observed by the naked eye. To enable sensitive visual and quantitative detection, we encapsulated Au@Pt core-shell nanoparticles (Au@PtNPs) in the hydrogel to generate quantitative readout in a volumetric bar-chart chip (V-Chip). In the V-Chip, Au@PtNPs catalyzes the oxidation of H2O2 to generate O2, which induces movement of an ink bar to a concentration-dependent distance for visual quantitative readout. Furthermore, to improve the detection limit in complex real samples, we introduced an immunoaffinity column (IAC) of OTA to enrich OTA from beer. After the enrichment, as low as 1.27 nM (0.51 ppb) OTA can be detected by the V-Chip, which satisfies the test requirement (2.0 ppb) by the European Commission. The integration of a target-responsive hydrogel with portable enrichment by IAC, as well as signal amplification and quantitative readout by a simple microfluidic device, offers a new method for portable detection of food safety hazard toxin OTA.
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Affiliation(s)
| | | | | | | | | | | | | | - Dunming Xu
- ‡Xiamen Entry-Exit Inspection and Quarantine Bureau, Xiamen 361026, China
| | - Min Wu
- ‡Xiamen Entry-Exit Inspection and Quarantine Bureau, Xiamen 361026, China
| | - Yan Chen
- ‡Xiamen Entry-Exit Inspection and Quarantine Bureau, Xiamen 361026, China
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17
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Bittner A, Cramer B, Harrer H, Humpf HU. Structure elucidation and in vitro cytotoxicity of ochratoxin α amide, a new degradation product of ochratoxin A. Mycotoxin Res 2015; 31:83-90. [PMID: 25566949 DOI: 10.1007/s12550-014-0218-y] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 12/17/2014] [Accepted: 12/18/2014] [Indexed: 11/26/2022]
Abstract
The mycotoxin ochratoxin A is a secondary metabolite occurring in a wide range of commodities. During the exposure of ochratoxin A to white and blue light, a cleavage between the carbon atom C-14 and the nitrogen atom was described. As a reaction product, the new compound ochratoxin α amide has been proposed based on mass spectrometry (MS) experiments. In the following study, we observed that this compound is also formed at high temperatures such as used for example during coffee roasting and therefore represents a further thermal ochratoxin A degradation product. To confirm the structure of ochratoxin α amide, the compound was prepared in large scale and complete structure elucidation via nuclear magnetic resonance (NMR) and MS was performed. Additionally, first studies on the toxicity of ochratoxin α amide were performed using immortalized human kidney epithelial (IHKE) cells, a cell line known to be sensitive against ochratoxin A with an IC50 value of 0.5 μM. Using this system, ochratoxin α amide revealed no cytotoxicity up to concentrations of 50 μM. Thus, these results propose that the thermal degradation of ochratoxin A to ochratoxin α amide might be a detoxification process. Finally, we present a sample preparation and a HPLC-tandem mass spectrometry (HPLC-MS/MS) method for the analysis of ochratoxin α amide in extrudates and checked its formation during the extrusion of artificially contaminated wheat grits at 150 and 180 °C, whereas no ochratoxin α amide was detectable under these conditions.
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Affiliation(s)
- Andrea Bittner
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 45, 48149, Münster, Germany
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Abrunhosa L, Morales H, Soares C, Calado T, Vila-Chã AS, Pereira M, Venâncio A. A Review of Mycotoxins in Food and Feed Products in Portugal and Estimation of Probable Daily Intakes. Crit Rev Food Sci Nutr 2014; 56:249-65. [DOI: 10.1080/10408398.2012.720619] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Doi K, Uetsuka K. Mechanisms of Mycotoxin-induced Dermal Toxicity and Tumorigenesis Through Oxidative Stress-related Pathways. J Toxicol Pathol 2014; 27:1-10. [PMID: 24791061 PMCID: PMC4000067 DOI: 10.1293/tox.2013-0062] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Accepted: 11/24/2013] [Indexed: 12/17/2022] Open
Abstract
Among the many mycotoxins, T-2 toxin, citrinin (CTN), patulin (PAT), aflatoxin B1 (AFB1) and ochratoxin A (OTA) are known to have the potential to induce dermal toxicity and/or tumorigenesis in rodent models. T-2 toxin, CTN, PAT and OTA induce apoptosis in mouse or rat skin. PAT, AFB1 and OTA have tumor initiating properties, and OTA is also a tumor promoter in mouse skin. This paper reviews the molecular mechanisms of dermal toxicity and tumorigenesis induced in rodent models by these mycotoxins especially from the viewpoint of oxidative stress-mediated pathways.
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Affiliation(s)
- Kunio Doi
- Bozo Research Center Inc., 8 Ohkubo, Tsukuba, Ibaraki 300-2611, Japan ; Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo, Tokyo 113-8657, Japan
| | - Koji Uetsuka
- Animal Health Laboratory, College of Agriculture, Ibaraki University, 3-21-1, Ami-machi, Inashiki-gun, Ibaraki 300-0393, Japan
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20
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Prieto-Simón B, Samitier J. "Signal off" aptasensor based on enzyme inhibition induced by conformational switch. Anal Chem 2014; 86:1437-44. [PMID: 24377312 DOI: 10.1021/ac402258x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel sensing strategy for electrochemical aptamer-based sensors is presented. Nucleic acid aptamers are considered alternatives to antibodies. However, some of their intrinsic properties, such as that they can undergo conformational changes during the binding of the target, can be used to design novel sensing strategies. Unlike other electrochemical "signal off" aptamer-based sensors, we report a strategy based on enzymatic inhibition. Our approach shows the feasibility to detect small molecules based on the aptamer conformational change induced by the target that leads to the inhibition of the enzyme used as a label. Additionally, we prove the ability to regenerate the function of the aptasensor by simply applying a short potential pulse. As a proof-of-concept, the widely used aptamer for ochratoxin A (OTA) has been selected as a model. After self-assembling short oligonucleotides onto a gold electrode, complementary to the 3' end of the aptamer, hybridization of the aptamer takes place. To investigate the mechanism induced by the OTA-binding, surface plasmon resonance assays were performed, which confirmed the conformational switch of the aptamer rather than the aptamer displacement by dehybridization from the DNA-modified sensor surface. The electrochemical sensor can successfully detect OTA in wine at the limits stipulated by the European Commission. Given its sensitivity, rapid and easy detection, and regeneration, it can be envisaged as screening tool for OTA detection. Moreover, this sensing strategy has the potential to be applied to other aptamer-based biochemical assays for the detection of small molecules in the fields of food safety, environmental monitoring, and medical diagnostics.
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Affiliation(s)
- Beatriz Prieto-Simón
- Nanobioengineering Group, Institute for Bioengineering of Catalonia (IBEC) , Baldiri Reixac 10-12 08028 Barcelona, Spain
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21
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Bittner A, Cramer B, Humpf HU. Matrix binding of ochratoxin A during roasting. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:12737-12743. [PMID: 24328070 DOI: 10.1021/jf403984x] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The mycotoxin ochratoxin A is degraded during coffee roasting by up to 90%. During this process, the two known degradation products, 14R-ochratoxin A and 14-decarboxy-ochratoxin A are formed. However, there is still an unexplained loss of more than 50% ochratoxin A. Here, we describe the binding of ochratoxin A to coffee polysaccharides via esterification as a further thermal reaction. This ester formation was studied by heating ochratoxin A with methyl α-d-glucopyranoside, a model compound to mimic polysaccharides. From this experiment, (22 → 6') ochratoxin A-methyl-α-d-glucopyranoside ester was isolated and characterized as a reaction product, showing the general ability of ochratoxin A for esterification with carbohydrates at roasting temperatures. Subsequently, a sample preparation protocol for the detection of ochratoxin A saccharide esters based on an enzymatic cleavage and purification using immunoaffinity chromatography was developed and applied. The detection was carried out by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Using this method, it was possible to detect ochratoxin A polysaccharide esters formed during roasting of artificially contaminated coffee, confirming the results of the previous model experiments. Thus, the formation of ochratoxin A esters is a further explanation for the loss of ochratoxin A during coffee roasting.
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Affiliation(s)
- Andrea Bittner
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster , Corrensstraße 45, D-48149 Münster, Germany
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22
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Staneva R, Rukova B, Hadjidekova S, Nesheva D, Antonova O, Dimitrov P, Simeonov V, Stamenov G, Cukuranovic R, Cukuranovic J, Stefanovic V, Polenakovic M, Dimova I, Hlushchuk R, Djonov V, Galabov A, Toncheva D. Whole genome methylation array analysis reveals new aspects in Balkan endemic nephropathy etiology. BMC Nephrol 2013; 14:225. [PMID: 24131581 PMCID: PMC3852817 DOI: 10.1186/1471-2369-14-225] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Accepted: 10/11/2013] [Indexed: 11/17/2022] Open
Abstract
Background Balkan endemic nephropathy (BEN) represents a chronic progressive interstitial nephritis in striking correlation with uroepithelial tumours of the upper urinary tract. The disease has endemic distribution in the Danube river regions in several Balkan countries. DNA methylation is a primary epigenetic modification that is involved in major processes such as cancer, genomic imprinting, gene silencing, etc. The significance of CpG island methylation status in normal development, cell differentiation and gene expression is widely recognized, although still stays poorly understood. Methods We performed whole genome DNA methylation array analysis on DNA pool samples from peripheral blood from 159 affected individuals and 170 healthy individuals. This technique allowed us to determine the methylation status of 27 627 CpG islands throughout the whole genome in healthy controls and BEN patients. Thus we obtained the methylation profile of BEN patients from Bulgarian and Serbian endemic regions. Results Using specifically developed software we compared the methylation profiles of BEN patients and corresponding controls and revealed the differently methylated regions. We then compared the DMRs between all patient-control pairs to determine common changes in the epigenetic profiles. SEC61G, IL17RA, HDAC11 proved to be differently methylated throughout all patient-control pairs. The CpG islands of all 3 genes were hypomethylated compared to controls. This suggests that dysregulation of these genes involved in immunological response could be a common mechanism in BEN pathogenesis in both endemic regions and in both genders. Conclusion Our data propose a new hypothesis that immunologic dysregulation has a place in BEN etiopathogenesis.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Draga Toncheva
- Department of Medical Genetics, Medical University of Sofia, 1421 2Zdrave str, Sofia, Bulgaria.
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23
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Bouisseau A, Roland A, Reillon F, Schneider R, Cavelier F. First Synthesis of a Stable Isotope of Ochratoxin A Metabolite for a Reliable Detoxification Monitoring. Org Lett 2013; 15:3888-90. [DOI: 10.1021/ol401630t] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anaïs Bouisseau
- IBMM, UMR-CNRS-5247, Universités Montpellier I and II, Place Eugène Bataillon, 34095 Montpellier, Cedex 5, France, Nyseos, Bâtiment 28, 2 place Pierre Viala, 34060 Montpellier Cedex 1, France, IFV UMT Qualinnov, 2 place Pierre Viala, 34060 Montpellier Cedex 1, France
| | - Aurélie Roland
- IBMM, UMR-CNRS-5247, Universités Montpellier I and II, Place Eugène Bataillon, 34095 Montpellier, Cedex 5, France, Nyseos, Bâtiment 28, 2 place Pierre Viala, 34060 Montpellier Cedex 1, France, IFV UMT Qualinnov, 2 place Pierre Viala, 34060 Montpellier Cedex 1, France
| | - Florence Reillon
- IBMM, UMR-CNRS-5247, Universités Montpellier I and II, Place Eugène Bataillon, 34095 Montpellier, Cedex 5, France, Nyseos, Bâtiment 28, 2 place Pierre Viala, 34060 Montpellier Cedex 1, France, IFV UMT Qualinnov, 2 place Pierre Viala, 34060 Montpellier Cedex 1, France
| | - Rémi Schneider
- IBMM, UMR-CNRS-5247, Universités Montpellier I and II, Place Eugène Bataillon, 34095 Montpellier, Cedex 5, France, Nyseos, Bâtiment 28, 2 place Pierre Viala, 34060 Montpellier Cedex 1, France, IFV UMT Qualinnov, 2 place Pierre Viala, 34060 Montpellier Cedex 1, France
| | - Florine Cavelier
- IBMM, UMR-CNRS-5247, Universités Montpellier I and II, Place Eugène Bataillon, 34095 Montpellier, Cedex 5, France, Nyseos, Bâtiment 28, 2 place Pierre Viala, 34060 Montpellier Cedex 1, France, IFV UMT Qualinnov, 2 place Pierre Viala, 34060 Montpellier Cedex 1, France
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Voice TC, Long DT, Radovanović Z, Atkins JL, McElmurry SP, Niagolova ND, Dimitrov P, Petropoulos EA, Ganev VS. Critical Evaluation of Environmental Exposure Agents Suspected in the Etiology of Balkan Endemic Nephropathy. INTERNATIONAL JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HEALTH 2013; 12:369-76. [PMID: 17168225 DOI: 10.1179/oeh.2006.12.4.369] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Balkan endemic nephropathy (BEN), a kidney disease that occurs in rural villages in Bosnia, Bulgaria, Croatia, Romania, and Serbia, is thought to be linked to an environmental toxin. The authors review literature on proposed environmental exposure agents, report the results of field sampling and analysis studies to evaluate potentials for exposure to proposed agents, and propose criteria for future testing. They used these criteria to evaluate the evidence for suggested hypotheses, concluding that several proposed agents can be eliminated or considered unlikely based on apparent inconsistencies between clinical or epidemiologic evidence related to BEN and toxicologic or exposure evidence related to the agents. Mycotoxins and aristolochic acid are the primary targets of current toxicologic investigations, and while the evidence on exposures for both is potentially consistent, it is insufficient.
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Affiliation(s)
- Thomas C Voice
- Institute of International Health, Michigan State University, East Lansing, Michigan 48824, USA.
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25
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Frizzell C, Verhaegen S, Ropstad E, Elliott C, Connolly L. Endocrine disrupting effects of ochratoxin A at the level of nuclear receptor activation and steroidogenesis. Toxicol Lett 2013; 217:243-50. [DOI: 10.1016/j.toxlet.2012.12.018] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Revised: 12/20/2012] [Accepted: 12/22/2012] [Indexed: 11/30/2022]
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26
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Grajewski J, Twarużek M, Kosicki R. High levels of ochratoxin A in blood serum and kidneys of wild boarsSus scrofain Poland. WILDLIFE BIOLOGY 2012. [DOI: 10.2981/11-059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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27
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Lasram S, Oueslati S, Chebil S, Mliki A, Ghorbel A. Occurrence of ochratoxin A in domestic beers and wines from Tunisia by immunoaffinity clean-up and liquid chromatography. FOOD ADDITIVES & CONTAMINANTS PART B-SURVEILLANCE 2012; 6:1-5. [PMID: 24786617 DOI: 10.1080/19393210.2012.716453] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
A survey on the occurrence of ochratoxin A (OTA) in wines and beers produced in Tunisia was carried out. Wines and beers were analysed using immunoaffinity column clean-up and high-performance liquid chromatography coupled to a fluorometric detector. OTA was detected in 29 wine samples, with an incidence of contamination of 85%. The OTA levels ranged between 0.09 and 1.5 µg/L. Neither of the studied samples showed levels above the European regulatory limit (2 µg/L). OTA was detected in 17 beer samples with an incidence of contamination of 45%. The OTA levels ranged between 0.04 and 0.35 µg/L. The OTA dietary intake by the consumption of wine and beer may be considered as negligible. The obtained results showed high incidence of OTA in Tunisian wines and beers; however, there are no toxicological risks for Tunisian consumers through their consumption of such processed products using cereals and grapes.
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Affiliation(s)
- S Lasram
- a Laboratory of Molecular Physiology of Plants , Center of Biotechnology of Borj-Cedria , Hammam-Lif , Tunisia
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28
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Kumar R, Ansari KM, Saxena N, Dwivedi PD, Jain SK, Das M. Detection of Ochratoxin A in wheat samples in different regions of India. Food Control 2012. [DOI: 10.1016/j.foodcont.2012.01.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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29
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Malir F, Ostry V, Pfohl-Leszkowicz A, Roubal T. Ochratoxin A exposure biomarkers in the Czech Republic and comparison with foreign countries. Biomarkers 2012; 17:577-89. [PMID: 22642623 DOI: 10.3109/1354750x.2012.692392] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Among ochratoxins, ochratoxin A (OTA) occupies a dominant place and represents significant risk for human and animal health which also implies economic losses around the world. OTA is nephrotoxic, hepatotoxic, teratogenic and immunotoxic mycotoxin. OTA exposure may lead to formation of DNA adducts resulting to genotoxicity and carcinogenicity (human carcinogen of 2B group). Now it seems that OTA could be "a complete carcinogen" which obliges to monitor its presence in biological materials, especially using the suitable biomarkers. In this article, OTA findings in urine, blood, serum, plasma and human kidneys (target dose) in the Czech Republic and comparison with foreign countries are presented.
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Affiliation(s)
- Frantisek Malir
- Department of Biology, University of Hradec Kralove, Czech Republic.
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30
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Lasram S, Barketi A, Mliki A, Ghorbel A. Growth and ochratoxin A production by Aspergillus carbonarius at different pHs and grape maturation stages. Lett Appl Microbiol 2012; 54:418-24. [DOI: 10.1111/j.1472-765x.2012.03224.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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31
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Pfohl-Leszkowicz A, Manderville RA. An update on direct genotoxicity as a molecular mechanism of ochratoxin a carcinogenicity. Chem Res Toxicol 2011; 25:252-62. [PMID: 22054007 DOI: 10.1021/tx200430f] [Citation(s) in RCA: 163] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Ochratoxin A (OTA) is a naturally occurring chlorophenolic fungal toxin that contaminates a wide range of food products and poses a cancer threat to humans. The mechanism of action (MOA) for OTA renal carcinogenicity is a controversial issue. In 2005, direct genotoxicity (covalent DNA adduct formation) was proposed as a MOA for OTA-mediated carcinogenicity [ Manderville , R. A. ( 2005 ) Chem. Res. Toxicol. 18 , 1091 - 1097 ]. At that time, inconsistent results had been published on OTA genotoxicity/mutagenicity, and conclusive evidence for OTA-mediated DNA adduction had been lacking. In this update, published data from the past 6-7 years are presented that provide new hypotheses for the MOA of OTA-mediated carcinogenicity. While direct genotoxicity remains a controversial issue for OTA, new findings from the Umemura and Nohmi laboratories provide definitive results for the mutagenicity of OTA in the target tissue (outer medulla) of male rat kidney that rules out oxidative DNA damage. These findings, coupled with our own efforts that provide new structural evidence for DNA adduction by OTA, has strengthened the argument for involvement of direct genotoxicity in OTA-mediated renal carcinogenesis. This MOA should be taken into consideration for OTA human risk assessment.
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Affiliation(s)
- Annie Pfohl-Leszkowicz
- Laboratoire de Génie Chimique , UMR CNRS/INPT/UPS 5503, INP/ENSA Toulouse, 1 Avenue Agrobiopole, F-31326 Auzeville-Tolosane, France.
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Hsp70 expression as biomarkers of oxidative stress: Mycotoxins’ exploration. Toxicology 2011; 287:1-7. [DOI: 10.1016/j.tox.2011.06.002] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2011] [Revised: 05/04/2011] [Accepted: 06/05/2011] [Indexed: 12/12/2022]
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Doi K, Uetsuka K. Mechanisms of mycotoxin-induced neurotoxicity through oxidative stress-associated pathways. Int J Mol Sci 2011; 12:5213-37. [PMID: 21954354 PMCID: PMC3179161 DOI: 10.3390/ijms12085213] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 07/21/2011] [Accepted: 08/04/2011] [Indexed: 01/08/2023] Open
Abstract
Among many mycotoxins, T-2 toxin, macrocyclic trichothecenes, fumonisin B(1) (FB(1)) and ochratochin A (OTA) are known to have the potential to induce neurotoxicity in rodent models. T-2 toxin induces neuronal cell apoptosis in the fetal and adult brain. Macrocyclic trichothecenes bring about neuronal cell apoptosis and inflammation in the olfactory epithelium and olfactory bulb. FB(1) induces neuronal degeneration in the cerebral cortex, concurrent with disruption of de novo ceramide synthesis. OTA causes acute depletion of striatal dopamine and its metabolites, accompanying evidence of neuronal cell apoptosis in the substantia nigra, striatum and hippocampus. This paper reviews the mechanisms of neurotoxicity induced by these mycotoxins especially from the viewpoint of oxidative stress-associated pathways.
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Affiliation(s)
- Kunio Doi
- Nippon Institute for Biological Science, 9-2221-1, Shin-Machi, Ome, Tokyo 198-0024, Japan
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo, Tokyo 113-8657, Japan
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +81-428-33-1086; Fax: +81-428-31-6166
| | - Koji Uetsuka
- Nippon Institute for Biological Science, 9-2221-1, Shin-Machi, Ome, Tokyo 198-0024, Japan
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Mycotoxin production by different ochratoxigenic Aspergillus and Penicillium species on coffee- and wheat-based media. Mycotoxin Res 2011; 27:239-47. [DOI: 10.1007/s12550-011-0100-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 04/28/2011] [Accepted: 04/29/2011] [Indexed: 10/18/2022]
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Abrunhosa L, Paterson RRM, Venâncio A. Biodegradation of ochratoxin a for food and feed decontamination. Toxins (Basel) 2010; 2:1078-99. [PMID: 22069627 PMCID: PMC3153227 DOI: 10.3390/toxins2051078] [Citation(s) in RCA: 118] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Revised: 04/22/2010] [Accepted: 05/12/2010] [Indexed: 11/30/2022] Open
Abstract
Ochratoxin A (OTA) is one of the most important mycotoxins that is found in food and feed products. It has proven toxic properties, being primarily known for its nephrotoxicity and carcinogenicity to certain animal species. OTA is produced by several species of Aspergillus and Penicillium that can be found in a wide variety of agricultural products, which makes the presence of OTA in these products common. Many countries have statutory limits for OTA, and concentrations need to be reduced to as low as technologically possible in food and feed. The most important measures to be taken to control OTA are preventive in order to avoid fungal growth and OTA production. However, these measures are difficult to implement in all cases with the consequence of OTA remaining in agricultural commodities. Remediation processes are often used to eliminate, reduce or avoid the toxic effects of OTA. Biological methods have been considered increasingly as an alternative to physical and chemical treatments. However, examples of practical applications are infrequent. This review will focus on the (i) known microorganisms and enzymes that are able to biodegrade OTA; (ii) mode of action of biodegradation and (iii) current applications. A critical discussion about the technical applicability of these strategies is presented.
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Affiliation(s)
- Luís Abrunhosa
- IBB, Institute for Biotechnology, Bioengineering, Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, Braga, Portugal.
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Reddy L, Bhoola K. Ochratoxins-food contaminants: impact on human health. Toxins (Basel) 2010; 2:771-9. [PMID: 22069609 PMCID: PMC3153213 DOI: 10.3390/toxins2040771] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2010] [Revised: 04/07/2010] [Accepted: 04/19/2010] [Indexed: 12/12/2022] Open
Abstract
Ochratoxins are secondary metabolites of Aspergillus and Penicillium, that are hazardous to health through contamination of dietary foods. Ochratoxin A (OTA) remains the single most potent member of this group of mycotoxins. OTA has a long half-life in humans and is thus easily detected in serum. Dietary intake studies have confirmed link between endemic nephrotoxicity in humans to their daily household intake of OTA. OTA has been reported to contribute to endemic nephrotoxicity and carcinogenicity in humans and animals. OTA produces renal tumours, DNA adducts and chromosomal aberrations in kidneys. OTA may be embryotoxic, teratogenic, and immunotoxic only at doses higher than those causing nephrotoxicity. The incidence of endemic nephrotoxicity has been mostly reported in northeast Europe since the early fifties. Recent studies however have warned that OTA and other toxins, such as aristolochic acid, show very similar renal pathology. There is thus the need for thorough co-occurrence studies on toxin incidence.
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Affiliation(s)
- Lalini Reddy
- Department of Biotechnology and Food Technology, Durban University of Technology, P. O. Box 1334, Durban, 4000, South Africa
| | - Kanti Bhoola
- University of Western Australia, The Lung Institute of Western Australia, Ground Floor E Block, Sir Charles Gairdner Hospital, Nedlands WA, 6009, Australia;
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Rizwan M, Miller I, Tasneem F, Böhm J, Gemeiner M, Razzazi-Fazeli E. Proteome analysis of Aspergillus ochraceus. Mycotoxin Res 2010; 26:171-80. [DOI: 10.1007/s12550-010-0051-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2010] [Revised: 03/02/2010] [Accepted: 03/02/2010] [Indexed: 10/19/2022]
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Blank R, Wolffram S. Effects of live yeast cell supplementation to high concentrate diets on the toxicokinetics of ochratoxin A in sheep. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2010; 26:119-26. [PMID: 19680879 DOI: 10.1080/02652030802320600] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Previous studies have indicated that high concentrate feeding reduces the ruminal degradation of the mycotoxin ochratoxin A (OA) to the less-toxic ochratoxin alpha (Oalpha) in ruminants. This is due to a pH-induced decrease in ruminal protozoa and subsequent increasing transfer of OA into the systemic circulation. The present study investigated whether stabilization of rumen pH by the live yeast cell supplementation to high concentrate diets affects the toxicokinetics of OA in sheep. Sheep were fed diets consisting of 70% concentrates and 30% grass silage (dry matter basis) supplemented without or with live yeast cells (Saccharomyces cerevisiae CNCM I-1077). After an adaptation period of 3 weeks, animals were given a single dose of OA (2.46 mg) in the form of contaminated wheat. Even though live yeast cells accelerated the recovery of ruminal pH from the decrease in pH induced by feeding, no effect on ruminal degradability and systemic availability of OA was recorded. Based on in vitro studies, live yeast cells and extracts of live yeast cell walls have been suggested as a mycotoxin-binding agent. However, supplementation with live yeast cells had no effect on the excretion pattern of OA in sheep, indicating that binding of OA to yeast components may be limited in ruminants. With respect to the toxicokinetics of OA, our results are in agreement with earlier results demonstrating that the hydrolysis of OA in the gastrointestinal tract of sheep is substantially less than previously described, especially if OA is ingested in combination with concentrate-rich diets. Our study demonstrates that feeding a live yeast cells product, registered as a feed additive for improving zootechnical performance, had no impact on the toxicokinetics of OA under the chosen conditions.
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Affiliation(s)
- R Blank
- Institute of Animal Nutrition and Physiology, Christian-Albrechts-University, Germany.
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Golli-Bennour EE, Kouidhi B, Bouslimi A, Abid-Essefi S, Hassen W, Bacha H. Cytotoxicity and genotoxicity induced by aflatoxin B1, ochratoxin A, and their combination in cultured Vero cells. J Biochem Mol Toxicol 2010; 24:42-50. [DOI: 10.1002/jbt.20310] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Boesch-Saadatmandi C, Wagner AE, Graeser AC, Hundhausen C, Wolffram S, Rimbach G. Ochratoxin A impairs Nrf2-dependent gene expression in porcine kidney tubulus cells. J Anim Physiol Anim Nutr (Berl) 2009; 93:547-54. [DOI: 10.1111/j.1439-0396.2008.00838.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
The majority of human food and animal feed production occurs in a highly managed agroecosystem. Management decisions include variety grown, tillage and irrigation methods and practices, fertilization, pest and disease control, harvesting methods, and storage and transportation practices. This system is generally managed for optimum returns to labor and capital investments. The spores of toxigenic fungi have ubiquitous distribution and toxigenic fungi exploit food sources when conditions of moisture and temperature are above minimums for growth. The safety margins in the agroecosystem are close and are influenced by extrinsic factors such as climatic events. Control of fungal growth is important in management of raw feedstuffs, foodstuffs, condiments-spices, botanicals, and other consumable substances as they are grown, harvested, stored, and transported. The risk factors for mycotoxin production are weather conditions during crop growth and when the crop is mature, damage to seeds before, during, and after harvest, how commodities are physically handled, the presence of weed seeds and other foreign material in grain, and how commodity moisture and temperature are managed during storage and transportation. Diversion of commodities and by-products from human consumption to animal feedstuffs can increase the risk of mycotoxicoses in animals. The toxicology of selected toxigenic fungi and the mycotoxins they produce are reviewed.
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Ochratoxin A in human blood serum – retrospective long-term data. Mycotoxin Res 2009; 25:175-86. [DOI: 10.1007/s12550-009-0025-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2009] [Revised: 08/22/2009] [Accepted: 08/26/2009] [Indexed: 11/26/2022]
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Živčić-Ćosić S, Gržetić M, Valenčić M, Oguić R, Maričić A, Đorđević G, Balen S, Orlić L, Rački S, Fučkar Ž. Urothelial Cancer in Patients with Endemic Balkan Nephropathy (EN) after Renal Transplantation. Ren Fail 2009; 29:861-5. [DOI: 10.1080/08860220701595882] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Gagliano N, Torri C, Donetti E, Grizzi F, Costa F, Bertelli AAE, Migliori M, Filippi C, Bedoni M, Panichi V, Giovannini L, Gioia M. Ochratoxin A-induced renal cortex fibrosis and epithelial-to-mesenchymal transition: molecular mechanisms of ochratoxin A-injury and potential effects of red wine. Mol Med 2009; 11:30-8. [PMID: 16622519 PMCID: PMC1449520 DOI: 10.2119/2005-00038.gagliano] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2005] [Accepted: 03/06/2006] [Indexed: 11/06/2022] Open
Abstract
We characterized the effect of chronic ochratoxin A (OTA) on rat kidney cortex, analyzing collagen content and collagen turnover and the major markers of epithelial-to-mesenchymal transition (EMT), such as alpha-smooth muscle actin (alphaSMA), cadherins, and MMP-9. Because OTA nephrotoxicity is mediated by free radicals, we also investigated whether antioxidants in red wine provided protection for the kidney and attenuated OTA-induced EMT. Collagen content, determined by computerized analysis of Sirius red-stained kidney sections, increased in OTA, OTA-wine, and OTA-EtOH treated rats. In kidney cortex homogenates, COL-I and COL-III mRNA levels tended to rise in OTA treated rats, but were similar to CT after OTA-wine and OTA-EtOH administration. TIMP-1 gene expression was up-regulated in OTA, OTA-wine, and OTA-EtOH treated rats. LH2b mRNA/COL-I mRNA was significantly up-regulated in OTA-wine and OTA-EtOH treated rats, compared with CT and OTA alone. TGF-beta1 signaling tended to dominate after OTA, OTA-wine, and OTA-EtOH. MMP-1 protein levels were not affected. OTA induced proMMP-9 and alphaSMA overexpression, decreases of E-cadherin and N-cadherin, and DSC-2 up-regulation. OTA-wine caused a further, unexpected decrease of E- and N-cadherins and further up-regulation of OTA-induced DSC-2, while strongly reducing the OTA-induced increases of alphaSMA and proMMP-9. Posttranslational collagen modifications, such as decreased collagen degradation through MMP inhibition and increased collagen cross-links, seem to be key mechanisms leading to OTA-induced kidney cortex fibrosis. This mechanism was not affected by red wine in these conditions. Red wine seems to have some protective role against OTA-induced EMT, although without completely blocking the process and determining a condition in which abundant cells display an intermediate translational phenotype, but there are no alphaSMA or epithelial markers.
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Aoudia N, Callu P, Grosjean F, Larondelle Y. Effectiveness of mycotoxin sequestration activity of micronized wheat fibres on distribution of ochratoxin A in plasma, liver and kidney of piglets fed a naturally contaminated diet. Food Chem Toxicol 2009; 47:1485-9. [PMID: 19345713 DOI: 10.1016/j.fct.2009.03.033] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2008] [Revised: 03/24/2009] [Accepted: 03/25/2009] [Indexed: 11/30/2022]
Abstract
A study was carried out to determine the ability of dietary micronized wheat fibres (MWF) to decrease the levels of ochratoxin A (OTA) in plasma, kidney and liver of piglets fed a naturally contaminated diet. A total of 96 piglets (weighting 11.4+/-1.5 kg) were fed one of four different diets for 28 days. Diets included (1) control diet, (2) control diet with MWF (1%), (3) OTA naturally contaminated diet (117.45+/-4.74 ng/g), (4) OTA naturally contaminated diet (118.13+/-2.85 ng/g) with MWF (1%). No difference in feed efficiency (P>0.05) could be observed between the different diets. The absolute weight of kidneys and liver were significantly higher in pigs fed the OTA-contaminated diet (diet 3) as compared to the control diet (diet 1) or to the control diet amended with MWF (diet 2) (P<0.05). However the use of MWF (diet 4) significantly protected against these weight changes. A significant protective effect of MWF was also observed in terms of OTA concentration in plasma (45.6% decrease), kidney (40.8% decrease) and liver (26.5% decrease). These results suggest that the addition of MWF is effective in decreasing the bioavailability of OTA from contaminated diets in piglets.
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Affiliation(s)
- N Aoudia
- Unité de Biochimie de la Nutrition, Faculté d'Ingénierie Biologique, Agronomique et Environnementale, Croix du sud 8/02, Université Catholique de Louvain, B-1348 Louvain-la-Neuve, Belgium
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Bouslimi A, Ouannes Z, Golli EE, Bouaziz C, Hassen W, Bacha H. Cytotoxicity and Oxidative Damage in Kidney Cells Exposed to the Mycotoxins Ochratoxin A and Citrinin: Individual and Combined Effects. Toxicol Mech Methods 2008; 18:341-9. [DOI: 10.1080/15376510701556682] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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47
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Boesch-Saadatmandi C, Loboda A, Jozkowicz A, Huebbe P, Blank R, Wolffram S, Dulak J, Rimbach G. Effect of ochratoxin A on redox-regulated transcription factors, antioxidant enzymes and glutathione-S-transferase in cultured kidney tubulus cells. Food Chem Toxicol 2008; 46:2665-71. [DOI: 10.1016/j.fct.2008.04.023] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2007] [Revised: 04/16/2008] [Accepted: 04/21/2008] [Indexed: 10/22/2022]
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Hassen W, Ayed-Boussema I, Bouslimi A, Bacha H. Heat shock proteins (Hsp 70) response is not systematic to cell stress. Toxicology 2007; 242:63-70. [DOI: 10.1016/j.tox.2007.09.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2007] [Revised: 09/07/2007] [Accepted: 09/10/2007] [Indexed: 10/22/2022]
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Fu X. Surface Plasmon Resonance Immunoassay for Ochratoxin A Based on Nanogold Hollow Balls with Dendritic Surface. ANAL LETT 2007. [DOI: 10.1080/00032710701588366] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Abstract
Mycotoxin contamination in pet food poses a serious health threat to pets, causing an emotional and economical concern to the pet owners. Aflatoxins, ochratoxins, trichothecenes, zearalenone, fumonisins and fusaric acid have been found in the ingredients and final products of pet food, resulting in both acute toxicity and chronic health problems in pets. Toxicological interaction among mycotoxins as a natural mixture further complicates the issue. The concepts of "risk assessment", using hazard identification, dose-response assessment, no observable adverse effect level (NOAEL), and lowest observed adverse effect level (LOAEL), should be applied to assess the risk and safety of mycotoxins in pet food, thereby instilling public confidence in the pet food industry.
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