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Son Y, Lee HJ, Ryu D, Kim JR, Kim HY. Ochratoxin A induces hepatic and renal toxicity in mice through increased oxidative stress, mitochondrial damage, and multiple cell death mechanisms. Arch Toxicol 2024; 98:2281-2295. [PMID: 38546835 DOI: 10.1007/s00204-024-03732-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/07/2024] [Indexed: 06/13/2024]
Abstract
Ochratoxin A (OTA) is a widespread food toxin produced by Aspergillus ochraceus and other molds. In this study, we developed and established acute OTA toxicity conditions in mice, which received daily oral doses of OTA between 0.5 up to 8 mg/kg body weight up to 7 days and were subjected to histological and biochemical analysis to characterize renal and hepatic damage. Oral administration of OTA for 7 days resulted in loss of body weight in a dose-dependent manner and increased the levels of serum biomarkers of hepatic and renal damage. The kidney was more sensitive to OTA-induced damage than the liver. In addition to necrosis, OTA induced hepatic and renal apoptosis in dose- and time-dependent manners. Especially, a high dose of OTA (8 mg/kg body weight) administered for 7 days led to necroptosis in both liver and kidney tissues. OTA dose-dependently increased the oxidative stress levels, including lipid peroxidation, in the liver and kidneys. OTA disrupted mitochondrial dynamics and structure in hepatic and renal cells, leading to the dysregulation of mitochondrial homeostasis. OTA increased transferrin receptor 1 and decreased glutathione peroxidase 4 levels in a dose- and time-dependent manner. These results suggest the induction of ferroptosis. Collectively, this study highlighted the characteristics of acute OTA-induced hepatic and renal toxicity in mice in terms of oxidative stress, mitochondrial damage, and multiple cell death mechanisms, including necroptosis and ferroptosis.
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Affiliation(s)
- Youlim Son
- Department of Biochemistry and Molecular Biology, Yeungnam University College of Medicine, Daegu, 42415, Republic of Korea
- Senotherapy-Based Metabolic Disease Control Research Center, Yeungnam University College of Medicine, Daegu, 42415, Republic of Korea
| | - Hyun Jung Lee
- Department of Animal, Veterinary, and Food Sciences, University of Idaho, Moscow, ID, 83844, USA
| | - Dojin Ryu
- Division of Food, Nutrition and Exercise Sciences, University of Missouri, Columbia, MO, 65211, USA
| | - Jae-Ryong Kim
- Department of Biochemistry and Molecular Biology, Yeungnam University College of Medicine, Daegu, 42415, Republic of Korea.
- Senotherapy-Based Metabolic Disease Control Research Center, Yeungnam University College of Medicine, Daegu, 42415, Republic of Korea.
| | - Hwa-Young Kim
- Department of Biochemistry and Molecular Biology, Yeungnam University College of Medicine, Daegu, 42415, Republic of Korea.
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Zhao Y, Chen W, Fang H, Zhang J, Wu S, Yang H, Zhou Y. Ratiometric fluorescence immunoassay based on silver nanoclusters and calcein-Ce 3+ for detecting ochratoxin A. Talanta 2024; 269:125470. [PMID: 38011811 DOI: 10.1016/j.talanta.2023.125470] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 10/30/2023] [Accepted: 11/21/2023] [Indexed: 11/29/2023]
Abstract
Ochratoxin A (OTA), a dangerous mycotoxin, is found in many crops. It is essential to create sensitive OTA detection techniques to ensure food safety. Based on the principle of p-nitrophenol (PNP) quenched the fluorescence of bovine serum albumin silver nanocluster (BSA-AgNCs) through an internal filtering effect, and phosphate activated fluorescence of calcein-Ce3+ system, a ratiometric fluorescence immunoassay for OTA detection was developed. In this strategy, the value of F518/F640 was used as a signal for response of OTA concentration. The detection range of this strategy was 0.625-25 ng/mL, the limit of detection (LOD) was 0.04 ng/mL. This new immunoassay offered a brand-new platform for detecting OTA.
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Affiliation(s)
- Yanan Zhao
- College of Animal Science and Technology, Yangtze University, Jingzhou, 434025, People's Republic of China
| | - Wang Chen
- College of Animal Science and Technology, Yangtze University, Jingzhou, 434025, People's Republic of China
| | - Huajuan Fang
- College of Life Science, Yangtze University, Jingzhou, 434025, People's Republic of China
| | - Junxiang Zhang
- College of Life Science, Yangtze University, Jingzhou, 434025, People's Republic of China
| | - Shixiang Wu
- College of Animal Science and Technology, Yangtze University, Jingzhou, 434025, People's Republic of China
| | - Hualin Yang
- College of Animal Science and Technology, Yangtze University, Jingzhou, 434025, People's Republic of China; College of Life Science, Yangtze University, Jingzhou, 434025, People's Republic of China.
| | - Yu Zhou
- College of Animal Science and Technology, Yangtze University, Jingzhou, 434025, People's Republic of China.
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Zheng X, Zhao Y, Zhang Y, Zhu Y, Zhang J, Xu D, Yang H, Zhou Y. Alkaline phosphatase triggered gold nanoclusters turn-on fluorescence immunoassay for detection of Ochratoxin A. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 304:123317. [PMID: 37688875 DOI: 10.1016/j.saa.2023.123317] [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: 08/02/2023] [Revised: 08/28/2023] [Accepted: 08/30/2023] [Indexed: 09/11/2023]
Abstract
Ochratoxin A (OTA) is a highly toxic mycotoxin which can cause a variety of diseases. Sensitive detection of OTA is significant for food safety. Herein, a feasible and sensitive immunoassay was established for OTA detection by alkaline phosphatase (ALP) triggered gold nanoclusters (AuNCs) turn-on fluorescence. The fluorescence of the AuNCs can be quenched by Cr6+ induced aggregation of AuNCs and the fluorescence resonance energy transfer (FRET) between AuNCs and Cr6+. Under the catalytic action of ALP-labelled IgG (IgG-ALP), the ascorbic acid 2-phosphate (AA2P) was hydrolyzed to ascorbic acid (AA) for the reducing of Cr6+ to Cr3+. As a result, the degrees of AuNCs aggregation and FRET were weakened and the fluorescence of AuNCs was turned on. The amount of OTA in the sample was negatively correlated with the amount of IgG-ALP captured by anti-OTA monoclonal antibody (McAb) in the microplate. In optimal conditions, the turn-on fluorescence immunoassay had a good linear range of 6.25-100 ng/mL, and the detection limit was 0.693 ng/mL. The recoveries of OTA from corn were 95.89%-101.08% for the fluorescence immunoassay. This work provided a feasible, sensitive and good selectivity fluorescence method for OTA detection.
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Affiliation(s)
- Xiaolong Zheng
- College of Animal Science and Technology, Yangtze University, 266 Jingmi Road, Jingzhou, Hubei, 434025, China
| | - Yanan Zhao
- College of Animal Science and Technology, Yangtze University, 266 Jingmi Road, Jingzhou, Hubei, 434025, China
| | - Yan Zhang
- College of Life Science, Yangtze University, 266 Jingmi Road, Jingzhou, Hubei, 434025, China
| | - Yuanhua Zhu
- College of Animal Science and Technology, Yangtze University, 266 Jingmi Road, Jingzhou, Hubei, 434025, China
| | - Junxiang Zhang
- College of Life Science, Yangtze University, 266 Jingmi Road, Jingzhou, Hubei, 434025, China
| | - Die Xu
- College of Life Science, Yangtze University, 266 Jingmi Road, Jingzhou, Hubei, 434025, China
| | - Hualin Yang
- College of Animal Science and Technology, Yangtze University, 266 Jingmi Road, Jingzhou, Hubei, 434025, China; College of Life Science, Yangtze University, 266 Jingmi Road, Jingzhou, Hubei, 434025, China.
| | - Yu Zhou
- College of Animal Science and Technology, Yangtze University, 266 Jingmi Road, Jingzhou, Hubei, 434025, China.
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Zhao P, Liu X, Jiang WD, Wu P, Liu Y, Ren HM, Jin XW, Zhang L, Mi HF, Feng L, Zhou XQ. Novel insights on toxicology of ochratoxin A contaminated diets to skin: Residues, mucus disruption and barrier impairment in teleost model grass carp (Ctenopharyngodon idella). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 262:115153. [PMID: 37348215 DOI: 10.1016/j.ecoenv.2023.115153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 06/08/2023] [Accepted: 06/15/2023] [Indexed: 06/24/2023]
Abstract
Ochratoxin A (OTA), a notorious pollutant widely present worldwide, seriously pollutes aquafeeds. This paper aims to explore the toxicity effects of OTA by the way of diet on the skin barrier in grass carp (Ctenopharyngodon idella). Results were shown as follows in the skin: (1) OTA increased the mRNA abundances of uptake transporter proteins (e.g., OAT3) and decreased efflux transporter proteins (e.g., ABCG2), which caused the accumulation of OTA in the skin of grass carp. (2) OTA upregulated the gene expression related to ROS production by enhancing the NOX (1, 2, 4) signaling pathway and decreased the ability to ROS elimination with downregulation of GPx1 (a,b), Trx by inhibiting the PGC1-α/Nrf2 signaling pathway, which caused oxidative damage to the skin. (3) OTA exacerbated apoptosis in the skin by upregulating the expression of apoptosis-related proteins mediated by ways of endoplasmic reticulum stress and mitochondrial apoptosis. Moreover, OTA down-regulated the mRNA and protein abundances of tight junction-related proteins by inhibiting the MLCK signaling pathway, which in turn disrupted the tight junctions. (4) OTA reduced the number of mucous cup cells and decreased f LZ activities and IgM contents, and finally down-regulated the mRNA abundances of mucin (2, 3), LEAP-2 (A, B), and β-defensin (1, 2, 3), which in turn resulted in impairing skin chemical barrier. Moreover, based on the antimicrobial-related indexes (LZ activities and IgM contents), the OTA-safe upper doses were 814.827 and 813.601 μg/kg.
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Affiliation(s)
- Piao Zhao
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China
| | - Xin Liu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China
| | - Wei-Dan Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Sichuan 611130, China; Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China
| | - Pei Wu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Sichuan 611130, China; Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China
| | - Yang Liu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Sichuan 611130, China; Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China
| | - Hong-Mei Ren
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Sichuan 611130, China; Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China
| | - Xiao-Wan Jin
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Sichuan 611130, China; Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China
| | - Lu Zhang
- Tongwei Co., Ltd., Chengdu, China, Healthy Aquaculture Key Laboratory of Sichuan Province, Sichuan, 610041, China; Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China
| | - Hai-Feng Mi
- Tongwei Co., Ltd., Chengdu, China, Healthy Aquaculture Key Laboratory of Sichuan Province, Sichuan, 610041, China; Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China
| | - Lin Feng
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Sichuan 611130, China; Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China.
| | - Xiao-Qiu Zhou
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Sichuan 611130, China; Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China.
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5
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Smartphone-Based Quantitative Detection of Ochratoxin A in Wheat via a Lateral Flow Assay. Foods 2023; 12:foods12030431. [PMID: 36765960 PMCID: PMC9914196 DOI: 10.3390/foods12030431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 01/10/2023] [Accepted: 01/12/2023] [Indexed: 01/18/2023] Open
Abstract
Ochratoxin A (OTA) poses a severe health risk to livestock along the food chain. Moreover, according to the International Agency for Research on Cancer, it is also categorized as being possibly carcinogenic to humans. The lack of intelligent point-of-care test (POCT) methods restricts its early detection and prevention. This work establishes a smartphone-enabled point-of-care test for OTA detection via a fluorescent lateral flow assay within 6 min. By using a smartphone and portable reader, the assay allows for the recording and sharing of the detection results in a cloud database. This intelligent POCT provided (iPOCT) a linearity range of 0.1-3.0 ng/mL and a limit of detection (LOD) of 0.02 ng/mL (0.32 µg/kg in wheat). By spiking OTA in blank wheat samples, the recoveries were 89.1-120.4%, with a relative standard deviation (RSD) between 3.9-9.1%. The repeatability and reproducibility were 94.2-101.7% and 94.6-103.4%, respectively. This work provides a promising intelligent POCT method for food safety.
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Ni B, Liu Y, Gao X, Cai M, Fu J, Yin X, Ni J, Dong X. Isoliquiritigenin attenuates emodin-induced hepatotoxicity in vivo and in vitro through Nrf2 pathway. Comp Biochem Physiol C Toxicol Pharmacol 2022; 261:109430. [PMID: 35944824 DOI: 10.1016/j.cbpc.2022.109430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 07/27/2022] [Accepted: 08/03/2022] [Indexed: 12/14/2022]
Abstract
Emodin (EMO), the main bioactive component of Polygonum multiflorum, Rheum palmatum, Aloe vera and Cassia acutifolia, can cause severe hepatotoxicity. Isoliquiritigenin (ISL), a flavonoid compound from the Glycyrrhiza, has been reported to be the most potent antioxidant response element (ARE)-luciferase inducer among the main components of licorice. But the protective effect and underlying mechanism of ISL on liver injury induced by EMO has not been reported. This study aims to explore the role of nuclear transcription factor 2 (Nrf2) in EMO-induced hepatotoxicity and the protective effect of ISL. EMO treatment caused cytotoxicity in L-02 cells. Combined treatment of EMO with ISL effectively reversed changes in cell viability, reduced reactive oxygen species (ROS) generation and malondialdehyde (MDA) generation, enhanced the levels of glutathione (GSH) and super oxide dismutase (SOD) induced by EMO in L-02 cells. Furthermore, ISL could also phosphorylate mitogen-activated protein kinases (MAPKs) and up-regulate Kelth-like ECH-associated protein (Keap1). The pathways of MAPKs and Keap1 lead to the separation of Keap1 and Nrf2. Free Nrf2 transferred to the nucleus and enhanced the expression of phase II detoxification enzymes. In conclusion, our results are the first to highlight the beneficial role and relevant mechanisms of ISL in EMO-induced liver injury and provide novel insight into its application.
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Affiliation(s)
- Boran Ni
- Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100700, China
| | - Yi Liu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xue Gao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Mengru Cai
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Jing Fu
- Beijing Institute of Traditional Chinese Medicine, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Xingbin Yin
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Jian Ni
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China.
| | - Xiaoxv Dong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China.
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Analysis and Comparison of Rapid Methods for the Determination of Ochratoxin a Levels in Organs and Body Fluids Obtained from Exposed Mice. Toxins (Basel) 2022; 14:toxins14090634. [PMID: 36136572 PMCID: PMC9503121 DOI: 10.3390/toxins14090634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 08/26/2022] [Accepted: 09/08/2022] [Indexed: 11/20/2022] Open
Abstract
Mycotoxins are bioaccumulative contaminants impacting animals and humans. The simultaneous detection of frequent active exposures and accumulated mycotoxin level (s) in exposed organisms would be the most ideal to enable appropriate actions. However, few methods are available for the purpose, and there is a demand for dedicated, sensitive, reliable, and practical assays. To demonstrate the issue, mice were exposed to a relevant agent Ochratoxin A (OTA), and accumulated OTA was measured by fine-tuned commercial assays. Quantitative high-performance liquid chromatography with fluorescence detection, enzyme-linked immunosorbent assay, and flow cytometry assays have been developed/modified using reagents available as commercial products when appropriate. Assays were performed on excised samples, and results were compared. Accumulated OTA could be detected and quantified; positive correlations (between applied doses of exposure and accumulated OTA levels and the results from assays) were found. Dedicated assays could be developed, which provided comparable results. The presence and accumulation of OTA following even a short exposure could be quantitatively detected. The assays performed similarly, but HPLC had the greatest sensitivity. Blood contained higher levels of OTA than liver and kidney. We demonstrate that specific but flexible and practical assays should be used for specific/local purposes, to measure the exposure itself and accumulation in blood or organs.
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Chen W, Zhang X, Zhang Q, Zhang G, Wu S, Yang H, Zhou Y. Cerium ions triggered dual-readout immunoassay based on aggregation induced emission effect and 3,3′,5,5′-tetramethylbenzidine for fluorescent and colorimetric detection of ochratoxin A. Anal Chim Acta 2022; 1231:340445. [DOI: 10.1016/j.aca.2022.340445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 09/06/2022] [Accepted: 09/23/2022] [Indexed: 12/01/2022]
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The Azadirachta indica (Neem) Seed Oil Reduced Chronic Redox-Homeostasis Imbalance in a Mice Experimental Model on Ochratoxine A-Induced Hepatotoxicity. Antioxidants (Basel) 2022; 11:antiox11091678. [PMID: 36139752 PMCID: PMC9495949 DOI: 10.3390/antiox11091678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/16/2022] [Accepted: 08/25/2022] [Indexed: 11/16/2022] Open
Abstract
Liver damage severity depends on both the dose and the exposure duration. Oxidative stress may increase the Ochratoxine-A (OTA) hepatotoxicity and many antioxidants may counteract toxic liver function. The present study aims to investigate the hepatoprotective potential of Azadirachta indicaA (A. indica; neem oil) seed oil to reduce acute oxidative disorders and residual OTA toxicity in a 28-day experimental model. The activity of antioxidant and hepatic enzymes, cytokines and the levels of oxidative stress biomarkers –MDA, GSPx, Hydroxiproline, GST, PCC, AGEs, PGC-1, and STIR-1 were analyzed by ELISA. The free radicals ROS and RNS levels were measured by EPR. The protective effects were studied in BALB/C mice treated with A. indica seed oil (170 mg/kg), alone and in combination with OTA (1.25 mg/kg), by gavage daily for 28 days. At the end of the experiment, mice treated with OTA showed changes in liver and antioxidant enzymes, and oxidative stress parameters in the liver and blood. A. indica oil significantly reduced oxidative stress and lipid peroxidation compared to the OTA group. In addition, the hepatic histological evaluation showed significant adipose tissue accumulation in OTA-treated tissues, while treatment with 170 mg/kg A. indica oil showed moderate adipose tissue accumulation.
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Serafimovska T, Stefanovski S, Erler J, Keskovski Z, Stefkov G, Mitevska M, Darkovska Serafimovska M, Balkanov T, Tonic Ribarska J. Does Cannabis Extract Obtained From Cannabis Flowers With Maximum Allowed Residual Level of Aflatoxins and Ochratoxin a Have an Impact on Human Safety and Health? Front Med (Lausanne) 2021; 8:759856. [PMID: 34869462 PMCID: PMC8634097 DOI: 10.3389/fmed.2021.759856] [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: 08/17/2021] [Accepted: 09/24/2021] [Indexed: 11/17/2022] Open
Abstract
Aim: The aim of this study was to investigate whether the cannabis extract obtained from cannabis flowers that contain the maximum allowed level of mycotoxins affects human safety and health. For that purpose, a novel liquid chromatography with tandem mass spectrometry (LC/MS/MS) method was developed and validated for the determination of aflatoxins and ochratoxin A (OchA) in cannabis extracts to demonstrate that this analytical method is suitable for the intended experimental design. Methods: Experimental design was done by adding maximum allowed concentration of aflatoxins (B1, B2, G1, G2) and OchA according to the European Pharmacopeia related to cannabis flowers. The concentration of aflatoxins and OchA was determined using the same LC/MS/MS analytical method in the starting material (dry flower) before preparing the spiked sample and after obtaining decarboxylated extract with ethanol 96%. Results: The results obtained indicate that aflatoxins and OchA, primarily added to the cannabis dried flowers, were also determined into the obtained final extract in amounts much higher (m/m) than in the starting plant material. Conclusion: With this experiment, we have shown that mycotoxins, especially aflatoxins, which are extremely toxic secondary metabolites, can reach critical values in cannabis extracts obtained from dry cannabis flowers with the maximum allowed quantity of mycotoxins. This can pose a great risk to consumers and their health especially to those with compromised immune systems.
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Affiliation(s)
- Tijana Serafimovska
- Faculty of Pharmacy, University Ss. Cyril and Methodius, Skopje, North Macedonia
| | - Sasho Stefanovski
- NYSK Holdings, Company for Growing, Extraction and Producing of Pharmaceutical Dosage Forms of Medical Cannabis, Skopje, North Macedonia
| | | | - Zlatko Keskovski
- NYSK Holdings, Company for Growing, Extraction and Producing of Pharmaceutical Dosage Forms of Medical Cannabis, Skopje, North Macedonia
| | - Gjoshe Stefkov
- Faculty of Pharmacy, University Ss. Cyril and Methodius, Skopje, North Macedonia
| | - Marija Mitevska
- NYSK Holdings, Company for Growing, Extraction and Producing of Pharmaceutical Dosage Forms of Medical Cannabis, Skopje, North Macedonia
| | | | - Trajan Balkanov
- Department of Pharmacology and Toxicology, Faculty of Medicine, University Ss. Cyril and Methodius, Skopje, North Macedonia
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Urinary Biomarkers of Mycotoxin Induced Nephrotoxicity-Current Status and Expected Future Trends. Toxins (Basel) 2021; 13:toxins13120848. [PMID: 34941686 PMCID: PMC8708607 DOI: 10.3390/toxins13120848] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/19/2021] [Accepted: 11/24/2021] [Indexed: 12/18/2022] Open
Abstract
The intensifying world-wide spread of mycotoxigenic fungal species has increased the possibility of mycotoxin contamination in animal feed and the human food chain. Growing evidence shows the deleterious toxicological effects of mycotoxins from infants to adults, while large population-based screening programs are often missing to identify affected individuals. The kidney functions as the major excretory system, which makes it particularly vulnerable to nephrotoxic injury. However, few studies have attempted to screen for kidney injury biomarkers in large, mycotoxin-exposed populations. As a result, there is an urgent need to screen them with sensitive biomarkers for potential nephrotoxicity. Although a plethora of biomarkers have been tested to estimate the harmful effects of a wide spectrum of toxicants, β2-microglobulin (β2-MG) and N-acetyl-β-D-glucosaminidase (NAG) are currently the dominant biomarkers employed routinely in environmental toxicology research. Nevertheless, kidney injury molecule 1 (KIM-1) and neutrophil gelatinase-associated lipocalin (NGAL) are also emerging as useful and informative markers to reveal mycotoxin induced nephrotoxicity. In this opinion article we consider the nephrotoxic effects of mycotoxins, the biomarkers available to detect and quantify the kidney injuries caused by them, and to recommend biomarkers to screen mycotoxin-exposed populations for renal damage.
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Transcriptome Analysis Reveals the AhR, Smad2/3, and HIF-1α Pathways as the Mechanism of Ochratoxin A Toxicity in Kidney Cells. Toxins (Basel) 2021; 13:toxins13030190. [PMID: 33800744 PMCID: PMC7999264 DOI: 10.3390/toxins13030190] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 02/25/2021] [Accepted: 03/05/2021] [Indexed: 12/11/2022] Open
Abstract
Ochratoxin A (OTA) is a mycotoxin occurring in foods consumed by humans. Recently, there has been growing global concern regarding OTA toxicity. The main target organ of OTA is the kidney, but the mechanism underlying renal toxicity is not well known. In this study, human-derived proximal tubular epithelial cells, HK-2 cells, were used for RNA-sequencing (RNA-seq) and transcriptome analysis. In total, 3193 differentially expressed genes were identified upon treatment with 200 nM OTA in HK-2 cells; of these, 2224 were upregulated and 969 were downregulated. Transcriptome analysis revealed that OTA significantly affects hypoxia, epithelial-mesenchymal transition (EMT), apoptosis, and xenobiotic metabolism pathways in kidney cells. Quantitative real-time PCR analysis showed gene expression patterns similar to RNA-seq analysis. Expression of EMT markers (E-cadherin and fibronectin), apoptosis markers (caspase-3 and Bax), and kidney injury molecule-1 (KIM-1) was suppressed by inhibiting AhR expression using siRNA, and the related transcription factors, Smad2/3, and HIF-1α were downregulated. Smad2/3 suppression with siRNA could inhibit fibronetcin, caspase-3, Bax, and KIM-1 expression. Fibronetcin, caspase-3, Bax, and KIM-1 expression could be increased with HIF-1α suppression with siRNA. Taken together, these findings suggest that OTA-mediated kidney toxicity via the AhR-Smad2/3-HIF-1α signaling pathways leads to induction of EMT, apoptosis, and kidney injury.
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Pastor L, Vettorazzi A, Guruceaga E, López de Cerain A. Time Course of Renal Transcriptomics after Subchronic Exposure to Ochratoxin A in Fisher Rats. Toxins (Basel) 2021; 13:177. [PMID: 33652839 PMCID: PMC7996782 DOI: 10.3390/toxins13030177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/16/2021] [Accepted: 02/20/2021] [Indexed: 12/21/2022] Open
Abstract
The mycotoxin ochratoxin A (OTA) is a potent nephrocarcinogen, mainly in male rats. The aim of this study was to determine the time course of gene expression (GeneChip® Rat Gene 2.0 ST Array, Affymetrix) in kidney samples from male and female F344 rats, treated daily (p.o) with 0.50 mg/kg b.w. (body weight) of OTA for 7 or 21 days, and evaluate if there were differences between both sexes. After OTA treatment, there was an evolution of gene expression in the kidney over time, with more differentially expressed genes (DEG) at 21 days. The gene expression time course was different between sexes with respect to the number of DEG and the direction of expression (up or down): the female response was progressive and consistent over time, whereas males had a different early response with more DEG, most of them up-regulated. The statistically most significant DEG corresponded to metabolism enzymes (Akr1b7, Akr1c2, Adh6 down-regulated in females; Cyp2c11, Dhrs7, Cyp2d1, Cyp2d5 down-regulated in males) or transporters (Slc17a9 down-regulated in females; Slco1a1 (OATP-1) and Slc51b and Slc22a22 (OAT) down-regulated in males). Some of these genes had also a basal sex difference and were over-expressed in males or females with respect to the other sex.
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Affiliation(s)
- Laura Pastor
- Department of Pharmacology and Toxicology, Faculty of Pharmacy and Nutrition, University of Navarra, CIFA Building, c/Irunlarrea 1, E-31008 Pamplona, Spain; (L.P.); (A.L.d.C.)
- IdiSNA, Navarra Institute for Health Research, E-31008 Pamplona, Spain;
| | - Ariane Vettorazzi
- Department of Pharmacology and Toxicology, Faculty of Pharmacy and Nutrition, University of Navarra, CIFA Building, c/Irunlarrea 1, E-31008 Pamplona, Spain; (L.P.); (A.L.d.C.)
- IdiSNA, Navarra Institute for Health Research, E-31008 Pamplona, Spain;
| | - Elizabeth Guruceaga
- IdiSNA, Navarra Institute for Health Research, E-31008 Pamplona, Spain;
- Bioinformatics Platform, Center for Applied Medical Research (CIMA), University of Navarra, E-31008 Pamplona, Spain
| | - Adela López de Cerain
- Department of Pharmacology and Toxicology, Faculty of Pharmacy and Nutrition, University of Navarra, CIFA Building, c/Irunlarrea 1, E-31008 Pamplona, Spain; (L.P.); (A.L.d.C.)
- IdiSNA, Navarra Institute for Health Research, E-31008 Pamplona, Spain;
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Zhang B, Li H, Zhu L, He X, Luo H, Huang K, Xu W. Single-cell transcriptomics uncovers potential marker genes of ochratoxin A-sensitive renal cells in an acute toxicity rat model. Cell Biol Toxicol 2021; 37:7-13. [PMID: 32468156 DOI: 10.1007/s10565-020-09531-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 04/28/2020] [Indexed: 01/10/2023]
Affiliation(s)
- Boyang Zhang
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100083, China
| | - Hongyu Li
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100083, China
| | - Liye Zhu
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100083, China
| | - Xiaoyun He
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100083, China
- Key Laboratory of Safety Assessment of Genetically Modified Organism (Food Safety), Ministry of Agriculture and Rural Affairs, Beijing, 100083, China
| | - Haoshu Luo
- Department of Animal Physiology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Kunlun Huang
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100083, China
- Key Laboratory of Safety Assessment of Genetically Modified Organism (Food Safety), Ministry of Agriculture and Rural Affairs, Beijing, 100083, China
| | - Wentao Xu
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100083, China.
- Key Laboratory of Safety Assessment of Genetically Modified Organism (Food Safety), Ministry of Agriculture and Rural Affairs, Beijing, 100083, China.
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Antioxidative Effects of Curcumin on the Hepatotoxicity Induced by Ochratoxin A in Rats. Antioxidants (Basel) 2021; 10:antiox10010125. [PMID: 33477286 PMCID: PMC7830919 DOI: 10.3390/antiox10010125] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 01/05/2023] Open
Abstract
Ochratoxin A (OTA) is a powerful mycotoxin found in various foods and feedstuff, responsible for subchronic and chronic toxicity, such as nephrotoxicity, hepatotoxicity, teratogenicity, and immunotoxicity to both humans and several animal species. The severity of the liver damage caused depends on both dose and duration of exposure. Several studies have suggested that oxidative stress might contribute to increasing the hepatotoxicity of OTA, and several antioxidants, including curcumin (CURC), have been tested to counteract the toxic hepatic action of OTA in various classes of animals. Therefore, the present study was designed to evaluate the protective effect of CURC, a bioactive compound with different therapeutic properties on hepatic injuries caused by OTA in rat animal models. CURC effects were examined in Sprague Dawley rats treated with CURC (100 mg/kg), alone or in combination with OTA (0.5 mg/kg), by gavage daily for 14 days. At the end of the experiment, rats treated with OTA showed alterations in biochemical parameters and oxidative stress in the liver. CURC dosing significantly attenuated oxidative stress and lipid peroxidation versus the OTA group. Furthermore, liver histological tests showed that CURC reduced the multifocal lymphoplasmacellular hepatitis, the periportal fibrosis, and the necrosis observed in the OTA group. This study provides evidence that CURC can preserve OTA-induced oxidative damage in the liver of rats.
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The Antioxidant, Anti-Apoptotic, and Proliferative Potency of Argan Oil against Betamethasone-Induced Oxidative Renal Damage in Rats. BIOLOGY 2020; 9:biology9110352. [PMID: 33114212 PMCID: PMC7690873 DOI: 10.3390/biology9110352] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 10/20/2020] [Indexed: 11/16/2022]
Abstract
Simple Summary The present study aimed to investigate the protective effect of argan oil against nephrotoxic effect following overdose and long-term administration of betamethasone. The results revealed that betamethasone induced hematological changes, including reduction of red blood cells with leukocytosis, neutrophilia, monocytosis, lymphocytopenia, and marked thrombocytopenia. Moreover, betamethasone caused significant increase of serum urea and creatinine levels; renal malondialdehyde and nitric oxide contents associated with significant decrease of reduced glutathione content. Betamethasone also caused vascular, degenerative, and inflammatory histopathological alterations in kidney tissue along with increase of Bax and caspase-3 expressions and decrease of B-cell lymphoma-2 (Bcl-2) and proliferating cell nuclear antigen (PCNA) expressions. Conversely, the concomitant administration of argan oil (0.5, 1 mL/kg) with betamethasone ameliorated the aforementioned hematological, biochemical, pathological, and histochemical adverse effects. In conclusion, overdose and long-term administration of betamethasone could induce hematological changes and severe renal damage mediated by oxidative, apoptotic and proliferative mechanisms via increasing renal functions biomarkers and altering oxidant/antioxidant status along with pathological lesions and imbalance of Bax/Bcl-2 ratio that positively correlates with up-regulation of caspase-3 and down-regulation of PCNA in kidney tissue. However, argan oil could potentially protect against betamethasone- induced renal damage, in a dose-dependent manner, via its antioxidant, anti-apoptotic and proliferative properties. Abstract The present study aimed to investigate the protective effect of argan oil (AO) against nephrotoxic effects following overdose and long-term administration of betamethasone (BM). The phytochemical compositions of AO were assessed using GC/MS. Forty eight male Wister albino rats were divided into six groups and treated for 3 successive weeks. The control group was orally administrated distilled water daily, the BM group received BM (1 mg/kg, IM, day after day), AO/0.5 and AO/1 groups received AO (0.5 mL/kg, 1 mL/kg, orally, daily, respectively), BM + AO/0.5 group and BM + AO/1 group. The results revealed that BM induced hematological changes, including reduction of red blood cells with leukocytosis, neutrophilia, monocytosis, lymphocytopenia, and thrombocytopenia. Moreover, BM caused a significant increase of serum urea and creatinine levels, and renal malondialdehyde and nitric oxide contents with significant decrease of reduced glutathione content. BM also caused vascular, degenerative, and inflammatory histopathological alterations in kidney, along with an increase in the Bax/Bcl-2 ratio, activation of caspase-3, and decrease of proliferating cell nuclear antigen expression. Conversely, the concomitant administration of AO (0.5, 1 mL/kg) with BM ameliorated the aforementioned hematological, biochemical, pathological, and histochemical BM adverse effects. In conclusion, AO has protective effects against BM-induced renal damage, possibly via its antioxidant, anti-apoptotic, and proliferative properties.
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Baldissera MD, Souza CF, da Silva JA, Barroso DC, Glória EM, Mesadri J, Wagner R, Baldisserotto B, Val AL. Dietary ochratoxin A (OTA) decreases growth performance and impairs muscle antioxidant system and meat fatty acid profiles in juvenile tambaqui (Colossoma macropomum). Comp Biochem Physiol C Toxicol Pharmacol 2020; 236:108803. [PMID: 32470455 DOI: 10.1016/j.cbpc.2020.108803] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/20/2020] [Accepted: 05/23/2020] [Indexed: 12/22/2022]
Abstract
Plant-based ingredients are successfully replacing fishmeal in fish feeds. However, this practice increases the risk of feed contamination by mycotoxins that reduce production and heath associated with oxidative damage. The aim of this study was to determine whether feed contaminated with environmentally relevant concentrations of ochratoxin A (OTA) causes muscle oxidative damage in tambaqui (Colossoma macropomum), and to determine whether this feed impairs fatty acid profiles in fish meat. Final mean weight, weight gain, daily weight gain, feed efficiency, and specific growth rate were significantly lower in fish fed 1.6 and 2.4 mg OTA/kg compared to those fed basal diet, while feed conversion was significantly higher in these same groups compared to the basal group. Levels of reactive oxygen species and lipid peroxidation in muscle were significantly higher in fish fed 1.6 and 2.4 mg OTA/kg compared to those in the basal group. Likewise, muscle superoxide dismutase and glutathione peroxidase activities were significantly higher in fish fed 1.6 and 2.4 mg OTA/kg then in those fed basal feed. The total content of saturated fatty acids was significantly higher, and total content of polyunsaturated fatty acids was significantly lower in fish fed 2.4 mg OTA/kg compared to those fed basal feed. Taken together, the data suggest that OTA-contaminated feed induces oxidative damage and disturbs enzymatic and non-enzymatic antioxidant responses in tambaqui meat. The perturbations of fatty acid profiles in fish meat appears to mediated by oxidative damage, representing negative impact on fish health and presenting concerns for consumers of fish.
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Affiliation(s)
- Matheus D Baldissera
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil.
| | - Carine F Souza
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Jefferson A da Silva
- LEEM-Laboratory of Ecophysiology and Molecular Evolution, Brazilian National Institute for Research of the Amazon, Manaus, Amazonas, Brazil
| | - Danilo C Barroso
- LEEM-Laboratory of Ecophysiology and Molecular Evolution, Brazilian National Institute for Research of the Amazon, Manaus, Amazonas, Brazil
| | | | - Juliana Mesadri
- Department of Food Science and Technology, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Roger Wagner
- Department of Food Science and Technology, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Bernardo Baldisserotto
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Adalberto L Val
- LEEM-Laboratory of Ecophysiology and Molecular Evolution, Brazilian National Institute for Research of the Amazon, Manaus, Amazonas, Brazil
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Pyo MC, Chae SA, Yoo HJ, Lee KW. Ochratoxin A induces epithelial-to-mesenchymal transition and renal fibrosis through TGF-β/Smad2/3 and Wnt1/β-catenin signaling pathways in vitro and in vivo. Arch Toxicol 2020; 94:3329-3342. [PMID: 32617660 DOI: 10.1007/s00204-020-02829-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 06/24/2020] [Indexed: 12/30/2022]
Abstract
Ochratoxin A (OTA) is a toxin produced by fungi such as Aspergillus spp. and Penicillium spp. The key target organ of OTA toxicity is the kidney, and it is known that epithelial-to-mesenchymal transition (EMT) leading to fibrosis is enhanced after long-term exposure of the kidney to OTA. However, the mechanisms responsible for this onset are not precisely known. Therefore, the purpose of this study was to investigate the mechanism of OTA-induced EMT and fibrosis in human proximal tubule HK-2 cells and mouse kidneys. Cells were treated for 48 h with various concentrations of OTA (50, 100, and 200 nM) and mice underwent oral administration of various doses of OTA (200 and 1000 μg/kg body weight) for 12 weeks. Blood urea nitrogen and creatinine levels were increased in the serum of OTA-treated mice, and fibrosis was observed in kidney tissues. Furthermore, alpha-smooth muscle actin (α-SMA) and fibronectin levels were increased, and E-cadherin level was decreased by OTA in both HK-2 cells and kidney tissues. In addition, the expression levels of TGF-β, smad2/3, and β-catenin were increased after OTA treatment. α-SMA, E-cadherin, and fibronectin were shown to be regulated by the activation of transcription factors, smad2/3 and β-catenin. These results demonstrated that OTA induces EMT and renal fibrosis through Smad2/3 and β-catenin signaling pathways in vitro and in vivo.
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Affiliation(s)
- Min Cheol Pyo
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Anam-dong, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Seung A Chae
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Anam-dong, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Hee Joon Yoo
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Anam-dong, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Kwang-Won Lee
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Anam-dong, Seongbuk-gu, Seoul, 02841, Republic of Korea.
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Schrenk D, Bodin L, Chipman JK, del Mazo J, Grasl‐Kraupp B, Hogstrand C, Hoogenboom L(R, Leblanc J, Nebbia CS, Nielsen E, Ntzani E, Petersen A, Sand S, Schwerdtle T, Vleminckx C, Wallace H, Alexander J, Dall'Asta C, Mally A, Metzler M, Binaglia M, Horváth Z, Steinkellner H, Bignami M. Risk assessment of ochratoxin A in food. EFSA J 2020; 18:e06113. [PMID: 37649524 PMCID: PMC10464718 DOI: 10.2903/j.efsa.2020.6113] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The European Commission asked EFSA to update their 2006 opinion on ochratoxin A (OTA) in food. OTA is produced by fungi of the genus Aspergillus and Penicillium and found as a contaminant in various foods. OTA causes kidney toxicity in different animal species and kidney tumours in rodents. OTA is genotoxic both in vitro and in vivo; however, the mechanisms of genotoxicity are unclear. Direct and indirect genotoxic and non-genotoxic modes of action might each contribute to tumour formation. Since recent studies have raised uncertainty regarding the mode of action for kidney carcinogenicity, it is inappropriate to establish a health-based guidance value (HBGV) and a margin of exposure (MOE) approach was applied. For the characterisation of non-neoplastic effects, a BMDL 10 of 4.73 μg/kg body weight (bw) per day was calculated from kidney lesions observed in pigs. For characterisation of neoplastic effects, a BMDL 10 of 14.5 μg/kg bw per day was calculated from kidney tumours seen in rats. The estimation of chronic dietary exposure resulted in mean and 95th percentile levels ranging from 0.6 to 17.8 and from 2.4 to 51.7 ng/kg bw per day, respectively. Median OTA exposures in breastfed infants ranged from 1.7 to 2.6 ng/kg bw per day, 95th percentile exposures from 5.6 to 8.5 ng/kg bw per day in average/high breast milk consuming infants, respectively. Comparison of exposures with the BMDL 10 based on the non-neoplastic endpoint resulted in MOEs of more than 200 in most consumer groups, indicating a low health concern with the exception of MOEs for high consumers in the younger age groups, indicating a possible health concern. When compared with the BMDL 10 based on the neoplastic endpoint, MOEs were lower than 10,000 for almost all exposure scenarios, including breastfed infants. This would indicate a possible health concern if genotoxicity is direct. Uncertainty in this assessment is high and risk may be overestimated.
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Yang S, Li L, Yu L, Sun L, Li K, Tong C, Xu W, Cui G, Long M, Li P. Selenium-enriched yeast reduces caecal pathological injuries and intervenes changes of the diversity of caecal microbiota caused by Ochratoxin-A in broilers. Food Chem Toxicol 2020; 137:111139. [DOI: 10.1016/j.fct.2020.111139] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 01/06/2020] [Accepted: 01/19/2020] [Indexed: 12/11/2022]
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Yang X, Li Y, Zheng L, He X, Luo Y, Huang K, Xu W. Glucose-regulated protein 75 in foodborne disease models induces renal tubular necrosis. Food Chem Toxicol 2019; 133:110720. [DOI: 10.1016/j.fct.2019.110720] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 07/04/2019] [Accepted: 07/26/2019] [Indexed: 01/06/2023]
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Mazur-Kuśnirek M, Antoszkiewicz Z, Lipiński K, Fijałkowska M, Purwin C, Kotlarczyk S. The effect of polyphenols and vitamin E on the antioxidant status and meat quality of broiler chickens fed diets naturally contaminated with ochratoxin A. Arch Anim Nutr 2019; 73:431-444. [PMID: 31523998 DOI: 10.1080/1745039x.2019.1639445] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The aim of this study was to determine the effect of a polyphenol product (PP) (Proviox) and vitamin E on the antioxidant status and meat quality of broiler chickens fed diets contaminated with ochratoxin A (OTA). One hundred and twenty ROSS 308 broiler chickens were randomly divided into six groups (10 replications, 2 birds per replication). Group I received an uncontaminated and unsupplemented diet, diets of groups II to VI were contaminated with OTA at 172 µg and 200 µg/kg for the starter and grower period, respectively. Furthermore, diets of groups III, IV and V were supplemented with vitamin E at 100, 200 and 100 mg, respectively, and to diets of groups V and VI additionally 100 and 2200 mg PP was added, respectively. Supplementation with PP and vitamin E had no significant effects on the growth performance, dressing percentage or carcass trait parameters of broiler chickens. In chickens exposed to stress, dietary supplementation with vitamin E and/or PP improved the total antioxidant status (p ≤ 0.05), enhanced the blood activity of antioxidant enzymes (p ≤ 0.01) and increased the concentrations of non-enzymatic antioxidants (p ≤ 0.01) in the liver and breast muscles. Regardless of the administered antioxidants, chickens fed diets contaminated with OTA were characterised by lower dressing percentage (p ≤ 0.01), a higher proportion of the liver in the carcass (p ≤ 0.01), lower carcass fat content (p ≤ 0.01), and longer small intestines (p ≤ 0.01) and caeca (p ≤ 0.01). Dietary supplementation with PP improved the water-holding capacity of meat (p ≤ 0.01). The breast muscles of chickens fed diets supplemented with PP and vitamin E were characterised by higher (p ≤ 0.05) concentrations of eicosapentaenoic acid (C20:5). It was concluded that PP can be an insufficient component of diets for broiler chickens to improve growth performance and mitigate the negative effects of high dose of OTA in diets.
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Affiliation(s)
- Magdalena Mazur-Kuśnirek
- Department of Animal Nutrition and Feed Science, University of Warmia and Mazury in Olsztyn , Olsztyn , Poland
| | - Zofia Antoszkiewicz
- Department of Animal Nutrition and Feed Science, University of Warmia and Mazury in Olsztyn , Olsztyn , Poland
| | - Krzysztof Lipiński
- Department of Animal Nutrition and Feed Science, University of Warmia and Mazury in Olsztyn , Olsztyn , Poland
| | - Maja Fijałkowska
- Department of Animal Nutrition and Feed Science, University of Warmia and Mazury in Olsztyn , Olsztyn , Poland
| | - Cezary Purwin
- Department of Animal Nutrition and Feed Science, University of Warmia and Mazury in Olsztyn , Olsztyn , Poland
| | - Sylwia Kotlarczyk
- Department of Animal Nutrition and Feed Science, University of Warmia and Mazury in Olsztyn , Olsztyn , Poland
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Sakuma A, Wasada Ochi H, Yoshioka M, Yamanaka N, Ikezawa M, Guruge KS. Changes in hepato-renal gene expression in microminipigs following a single exposure to a mixture of perfluoroalkyl acids. PLoS One 2019; 14:e0210110. [PMID: 30608957 PMCID: PMC6319762 DOI: 10.1371/journal.pone.0210110] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 12/16/2018] [Indexed: 01/09/2023] Open
Abstract
It is evident that some perfluoroalkyl acids (PFAAs), a group of globally dispersed pollutants, have long biological half-lives in humans and farm animals. However, the effects of PFAAs in domestic animals have not been fully elucidated. The present study investigated how exposure to a single dose of a mixture of 10 PFAAs influenced hepatic and renal gene expression and histopathology, as well as plasma clinical biochemistry, in microminipigs (MMPigs) over 21 days. In animals treated with PFAAs, the mRNA expression of twelve genes related to fatty acid metabolism was upregulated in the kidney, while only few of these genes were induced in the liver. The expression of several kidney injury-associated genes such as, IGFBP1, IGFBP6, GCLC X2, GCLC X3, MSGT1, OLR1 was upregulated in the kidney. Interestingly, the expression of IGFBP-genes was differentially altered in the liver and kidney. Our findings thus identified hepato-renal gene expression changes in MMPigs that were associated with various molecular pathways including peroxisome proliferation, lipid metabolism, kidney injury, and apoptosis. Furthermore, serum HDL levels were significantly decreased following exposure to PFAAs, whereas no significant histopathological changes were detected, as compared to the vehicle group. Taken together, the present study provided the first indication that a single exposure to a mixture of PFAAs can produce changes in MMPig renal gene expression that were observed three weeks post exposure, suggesting that more attention should be paid to the kidney as a primary target organ of PFAAs.
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Affiliation(s)
- Akiko Sakuma
- Miyagi Prefectural Sendai Livestock Hygiene Service Center, Anyoji, Miyagino, Sendai, Miyagi, Japan
- Cellular Biology Laboratory, Graduate School of Agricultural Science, Tohoku University, Aramaki Aza Aoba, Aoba, Sendai, Miyagi, Japan
| | - Haruyo Wasada Ochi
- Kumamoto Prefectural Central Livestock Hygiene Service Center, Jyounan-mahi Shizume, Minami, Kumamoto, Kumamoto, Japan
| | - Miyako Yoshioka
- National Institute of Animal Health, National Agriculture and Food Research Organization, Kannondai, Tsukuba, Ibaraki, Japan
| | - Noriko Yamanaka
- National Institute of Animal Health, National Agriculture and Food Research Organization, Kannondai, Tsukuba, Ibaraki, Japan
| | - Mitsutaka Ikezawa
- National Institute of Animal Health, National Agriculture and Food Research Organization, Kannondai, Tsukuba, Ibaraki, Japan
| | - Keerthi S. Guruge
- National Institute of Animal Health, National Agriculture and Food Research Organization, Kannondai, Tsukuba, Ibaraki, Japan
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
- Centre for Crop Health, University of Southern Queensland, Toowoomba Campus, Queensland, Australia
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Vettorazzi A, Pastor L, Guruceaga E, López de Cerain A. Sex-dependent gene expression after ochratoxin A insult in F344 rat kidney. Food Chem Toxicol 2018; 123:337-348. [PMID: 30449730 DOI: 10.1016/j.fct.2018.10.057] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 10/19/2018] [Accepted: 10/24/2018] [Indexed: 02/02/2023]
Abstract
Ochratoxin A (OTA) is a potent rodent nephrocarcinogen; being males more sensitive than females. The objective was to study the response between sexes at gene expression level (whole genome transcriptomics) in kidneys of F344 rats treated with 0.21 or 0.50 mg/kg bw OTA for 21 days. DNA methylation analysis of selected genes was also studied (MALDI-TOF mass spectrometry). OTA-induced response was dose-dependent in males and females, although clearer in males. Females showed a higher number of altered genes than males but functional analysis revealed a higher number of significantly enriched toxicity lists in 0.21 mg/kg treated males. OTA modulated damage, signaling and metabolism related lists, as well as inflammation, proliferation and oxidative stress in both sexes. Eleven toxicity lists (damage, fibrosis, cell signaling and metabolism) were exclusively altered in males while renal safety biomarker and biogenesis of mitochondria lists were exclusively enriched in females. A high number of lists (39) were significantly enriched in both sexes. However, they contained many sex-biased OTA-modulated genes, mainly phase I and II, transporters and nuclear receptors, but also others related to cell proliferation/apoptosis. No biologically relevant changes were observed in the methylation of selected genes.
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Affiliation(s)
- Ariane Vettorazzi
- University of Navarra, Department of Pharmacology and Toxicology, Faculty of Pharmacy and Nutrition, E-31008, Pamplona, Spain; IdiSNA, Navarra Institute for Health Research, E-31008, Pamplona, Spain.
| | - Laura Pastor
- University of Navarra, Department of Pharmacology and Toxicology, Faculty of Pharmacy and Nutrition, E-31008, Pamplona, Spain.
| | - Elizabeth Guruceaga
- IdiSNA, Navarra Institute for Health Research, E-31008, Pamplona, Spain; Bioinformatics Platform, Center for Applied Medical Research (CIMA), University of Navarra, E-31008, Pamplona, Spain.
| | - Adela López de Cerain
- University of Navarra, Department of Pharmacology and Toxicology, Faculty of Pharmacy and Nutrition, E-31008, Pamplona, Spain; IdiSNA, Navarra Institute for Health Research, E-31008, Pamplona, Spain.
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Toxicity of Ochratoxin to Early Life Stages of Zebrafish ( Danio rerio). Toxins (Basel) 2018; 10:toxins10070264. [PMID: 29958392 PMCID: PMC6070827 DOI: 10.3390/toxins10070264] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 06/20/2018] [Accepted: 06/22/2018] [Indexed: 02/07/2023] Open
Abstract
Ochratoxin A (OTA) is a known contaminant in fish feed but its effect on fish health remains rather unknown. A study was conducted to investigate the effects of different concentrations of ochratoxin on early life stages of zebrafish (Danio rerio). The tests with ochratoxin A showed a correlation between the exposure to mycotoxin and the amount of damage. The mortality rate and the incidents of embryonal damage was increased by increasing ochratoxin concentrations. The calculations resulted in a lethal concentration for 50% of the embryos (LC50) of 0.29 mg/L and a concentration at which 50% of the animals showed impairment (EC50) of 0.36 mg/L after 96 h of exposure. During the test, reduced heart rates were also observed revealing a clear dose-response relationship. The EC50 determination for this endpoint was 1.26 mg/L after 72 h of exposure. The measurement of oxidative stress was proven to be the most sensitive system to indicate OTA effects on the zebrafish embryos with an EC50 value of 0.067 mg/L after 72 h of exposure. The test validity was given because the control test with 3,4-Dichloroaniline (3,4-D) showed a LC50 value of 2.88 mg after 96 h of exposure which is comparable to the available reference values. According to the current knowledge, these experimental doses did not exceed the environmental concentrations of this ochratoxin A. However, this study raises concerns about the effects of ochratoxin on fish.
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Tao Y, Xie S, Xu F, Liu A, Wang Y, Chen D, Pan Y, Huang L, Peng D, Wang X, Yuan Z. Ochratoxin A: Toxicity, oxidative stress and metabolism. Food Chem Toxicol 2018; 112:320-331. [DOI: 10.1016/j.fct.2018.01.002] [Citation(s) in RCA: 168] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 12/28/2017] [Accepted: 01/02/2018] [Indexed: 02/06/2023]
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Health Risks Associated with Exposure to Filamentous Fungi. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14070719. [PMID: 28677641 PMCID: PMC5551157 DOI: 10.3390/ijerph14070719] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 06/19/2017] [Accepted: 06/23/2017] [Indexed: 01/06/2023]
Abstract
Filamentous fungi occur widely in the environment, contaminating soil, air, food and other substrates. Due to their wide distribution, they have medical and economic implications. Regardless of their use as a source of antibiotics, vitamins and raw materials for various industrially important chemicals, most fungi and filamentous fungi produce metabolites associated with a range of health risks, both in humans and in animals. The association of filamentous fungi and their metabolites to different negative health conditions in humans and animals, has contributed to the importance of investigating different health risks induced by this family of heterotrophs. This review aims to discuss health risks associated with commonly occurring filamentous fungal species which belong to genera Aspergillus, Penicillium and Fusarium, as well as evaluating their pathogenicity and mycotoxic properties.
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Meng L, Wang M, Du Z, Fang Z, Wu B, Wu J, Xie W, Shen J, Zhu T, Xu X, Liao L, Xu L, Li E, Lan B. Cell Signaling Pathway in 12-O-Tetradecanoylphorbol-13-acetate-Induced LCN2 Gene Transcription in Esophageal Squamous Cell Carcinoma. BIOMED RESEARCH INTERNATIONAL 2017; 2017:9592501. [PMID: 29098164 PMCID: PMC5642883 DOI: 10.1155/2017/9592501] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 08/22/2017] [Indexed: 02/06/2023]
Abstract
LCN2 is involved in various cellular functions, including transport of small hydrophobic molecules, protection of MMP9 from proteolytic degradation, and regulating innate immunity. LCN2 is elevated in multiple human cancers, frequently being associated with tumor size, stage, and invasiveness. Our previous studies have shown that LCN2 expression could be induced by 12-O-tetradecanoylphorbol-13-acetate (TPA) in esophageal squamous cell carcinoma (ESCC) by the binding of five nucleoproteins (MISP, KLF10, KLF15, PPP1R18, and RXRβ) at a novel TPA-responsive element (TRE), at -152~-60 bp of the 5' flanking region of the LCN2 promoter. However, much is unknown about whether these proteins can respond to TPA stimulation to regulate LCN2 transactivation and which cell signaling pathways mediate this process. In this study, expression plasmids encoding these five nucleoproteins were stably transfected into EC109 cells. Then, stable transfectant was characterized by a Dual-Luciferase Reporter Assay System. RT-PCR, real-time PCR, western blotting, specific kinase inhibitor treatment, and bioinformatics analyses were applied in this study. We found that MISP, KLF10, KLF15, PPP1R18, and RXRβ proteins could strongly respond to TPA stimulation and activate LCN2 transcriptional expression. MEK, ERK, JNK, and P38 kinases were involved in the LCN2 transactivation. Furthermore, the MEK-ERK signal pathway plays a major role in this biological process but does not involve PKCα signaling.
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Affiliation(s)
- Lingying Meng
- Department of Cardiothoracic Surgery, Shantou Central Hospital, Affiliated Shantou Hospital of Sun Yat-sen University, Shantou, Guangdong 515041, China
| | - Muting Wang
- Department of Cardiothoracic Surgery, Shantou Central Hospital, Affiliated Shantou Hospital of Sun Yat-sen University, Shantou, Guangdong 515041, China
| | - Zepeng Du
- Department of Pathology, Shantou Central Hospital, Affiliated Shantou Hospital of Sun Yat-sen University, Shantou, Guangdong 515041, China
| | - Zhongmin Fang
- Department of Cardiothoracic Surgery, Shantou Central Hospital, Affiliated Shantou Hospital of Sun Yat-sen University, Shantou, Guangdong 515041, China
| | - Bingli Wu
- Department of Biochemistry and Molecular Biology, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Jianyi Wu
- Department of Biochemistry and Molecular Biology, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Wenming Xie
- Network and Information Center, Shantou University Medical College, Shantou 515041, China
| | - Jian Shen
- Department of Oncologic Pathology, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Tianxiang Zhu
- Department of Cardiothoracic Surgery, Shantou Central Hospital, Affiliated Shantou Hospital of Sun Yat-sen University, Shantou, Guangdong 515041, China
| | - XieE Xu
- Department of Oncologic Pathology, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Liandi Liao
- Department of Oncologic Pathology, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Liyan Xu
- Department of Oncologic Pathology, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Enmin Li
- Department of Biochemistry and Molecular Biology, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Bin Lan
- Department of Cardiothoracic Surgery, Shantou Central Hospital, Affiliated Shantou Hospital of Sun Yat-sen University, Shantou, Guangdong 515041, China
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