1
|
Csenki Z, Garai E, Faisal Z, Csepregi R, Garai K, Sipos DK, Szabó I, Kőszegi T, Czéh Á, Czömpöly T, Kvell K, Poór M. The individual and combined effects of ochratoxin A with citrinin and their metabolites (ochratoxin B, ochratoxin C, and dihydrocitrinone) on 2D/3D cell cultures, and zebrafish embryo models. Food Chem Toxicol 2021; 158:112674. [PMID: 34800554 DOI: 10.1016/j.fct.2021.112674] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 11/10/2021] [Accepted: 11/13/2021] [Indexed: 12/26/2022]
Abstract
Ochratoxin A and citrinin are nephrotoxic mycotoxins produced by Aspergillus, Penicillium, and/or Monascus species. The combined effects of ochratoxin A and citrinin have been examined in more studies; however, only limited data are available regarding the co-exposure to their metabolites. In this investigation, the individual toxic effects of ochratoxin A, ochratoxin B, ochratoxin C, citrinin, and dihydrocitrinone were tested as well as the combinations of ochratoxin A with the latter mycotoxins were examined on 2D and 3D cell cultures, and on zebrafish embryos. Our results demonstrate that even subtoxic concentrations of certain mycotoxins can increase the toxic impact of ochratoxin A. In addition, typically additive effects or synergism were observed as the combined effects of mycotoxins tested. These observations highlight that different cell lines (e.g. MDBK vs. MDCK), cell cultures (e.g. 2D vs. 3D), and models (e.g. in vitro vs. in vivo) can show different (sometimes opposite) impacts. Mycotoxin combinations considerably increased miR-731 levels in zebrafish embryos, which is an early marker of the toxicity on kidney development. These results underline that the co-exposure to mycotoxins (and/or mycotoxin metabolites) should be seriously considered, since even the barely toxic mycotoxins (or metabolites) in combinations can cause significant toxicity.
Collapse
Affiliation(s)
- Zsolt Csenki
- Department of Environmental Toxicology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter Károly u. 1, H-2100, Gödöllő, Hungary
| | - Edina Garai
- Department of Environmental Toxicology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter Károly u. 1, H-2100, Gödöllő, Hungary
| | - Zelma Faisal
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, H-7624, Pécs, Hungary; Food Biotechnology Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624, Pécs, Hungary
| | - Rita Csepregi
- Lab-on-a-Chip Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624, Pécs, Hungary; Department of Laboratory Medicine, Medical School, University of Pécs, Ifjúság út 13, H-7624, Pécs, Hungary
| | - Kitti Garai
- Food Biotechnology Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624, Pécs, Hungary; Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, H-7624, Pécs, Hungary
| | - Dóra Kánainé Sipos
- Department of Environmental Toxicology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter Károly u. 1, H-2100, Gödöllő, Hungary
| | - István Szabó
- Department of Environmental Toxicology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter Károly u. 1, H-2100, Gödöllő, Hungary
| | - Tamás Kőszegi
- Lab-on-a-Chip Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624, Pécs, Hungary; Department of Laboratory Medicine, Medical School, University of Pécs, Ifjúság út 13, H-7624, Pécs, Hungary
| | - Árpád Czéh
- Food Biotechnology Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624, Pécs, Hungary; Soft Flow Ltd., Ürögi fasor 2/a, H-7634, Pécs, Hungary
| | - Tamás Czömpöly
- Food Biotechnology Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624, Pécs, Hungary; Soft Flow Ltd., Ürögi fasor 2/a, H-7634, Pécs, Hungary
| | - Krisztián Kvell
- Food Biotechnology Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624, Pécs, Hungary; Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, H-7624, Pécs, Hungary
| | - Miklós Poór
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, H-7624, Pécs, Hungary; Food Biotechnology Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624, Pécs, Hungary.
| |
Collapse
|
2
|
Alassane-Kpembi I, Schatzmayr G, Taranu I, Marin D, Puel O, Oswald IP. Mycotoxins co-contamination: Methodological aspects and biological relevance of combined toxicity studies. Crit Rev Food Sci Nutr 2018; 57:3489-3507. [PMID: 26918653 DOI: 10.1080/10408398.2016.1140632] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Mycotoxins are secondary fungal metabolites produced mainly by Aspergillus, Penicillium, and Fusarium. As evidenced by large-scale surveys, humans and animals are simultaneously exposed to several mycotoxins. Simultaneous exposure could result in synergistic, additive or antagonistic effects. However, most toxicity studies addressed the effects of mycotoxins separately. We present the experimental designs and we discuss the conclusions drawn from in vitro experiments exploring toxicological interactions of mycotoxins. We report more than 80 publications related to mycotoxin interactions. The studies explored combinations involving the regulated groups of mycotoxins, especially aflatoxins, ochratoxins, fumonisins, zearalenone and trichothecenes, but also the "emerging" mycotoxins beauvericin and enniatins. Over 50 publications are based on the arithmetic model of additivity. Few studies used the factorial designs or the theoretical biology-based models of additivity. The latter approaches are gaining increased attention. These analyses allow determination of the type of interaction and, optionally, its magnitude. The type of interaction reported for mycotoxin combinations depended on several factors, in particular cell models and the tested dose ranges. However, synergy among Fusarium toxins was highlighted in several studies. This review indicates that well-addressed in vitro studies remain valuable tools for the screening of interactive potential in mycotoxin mixtures.
Collapse
Affiliation(s)
- Imourana Alassane-Kpembi
- a Toxalim , Research Centre in Food Toxicology Université de Toulouse, INRA, ENVT, INP- PURPAN, UPS , Toulouse , France.,b Hôpital d'Instruction des Armées Camp Guézo , Cotonou , Bénin
| | | | - Ionelia Taranu
- d National Institute for Research and Development in Animal Biology and Nutrition (IBNA), Calea Bucuresti , Balotesti , Romania
| | - Daniela Marin
- d National Institute for Research and Development in Animal Biology and Nutrition (IBNA), Calea Bucuresti , Balotesti , Romania
| | - Olivier Puel
- a Toxalim , Research Centre in Food Toxicology Université de Toulouse, INRA, ENVT, INP- PURPAN, UPS , Toulouse , France
| | - Isabelle Paule Oswald
- a Toxalim , Research Centre in Food Toxicology Université de Toulouse, INRA, ENVT, INP- PURPAN, UPS , Toulouse , France
| |
Collapse
|
3
|
Loi M, Fanelli F, Liuzzi VC, Logrieco AF, Mulè G. Mycotoxin Biotransformation by Native and Commercial Enzymes: Present and Future Perspectives. Toxins (Basel) 2017; 9:E111. [PMID: 28338601 PMCID: PMC5408185 DOI: 10.3390/toxins9040111] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/16/2017] [Accepted: 03/18/2017] [Indexed: 01/13/2023] Open
Abstract
Worldwide mycotoxins contamination has a significant impact on animal and human health, and leads to economic losses accounted for billions of dollars annually. Since the application of pre- and post- harvest strategies, including chemical or physical removal, are not sufficiently effective, biological transformation is considered the most promising yet challenging approach to reduce mycotoxins accumulation. Although several microorganisms were reported to degrade mycotoxins, only a few enzymes have been identified, purified and characterized for this activity. This review focuses on the biotransformation of mycotoxins performed with purified enzymes isolated from bacteria, fungi and plants, whose activity was validated in in vitro and in vivo assays, including patented ones and commercial preparations. Furthermore, we will present some applications for detoxifying enzymes in food, feed, biogas and biofuel industries, describing their limitation and potentialities.
Collapse
Affiliation(s)
- Martina Loi
- Institute of Sciences of Food Production, National Research Council, via Amendola 122/O, Bari 70126, Italy.
- Department of Economics, University of Foggia, via Napoli 25, Foggia 71122, Italy.
| | - Francesca Fanelli
- Institute of Sciences of Food Production, National Research Council, via Amendola 122/O, Bari 70126, Italy.
| | - Vania C Liuzzi
- Institute of Sciences of Food Production, National Research Council, via Amendola 122/O, Bari 70126, Italy.
| | - Antonio F Logrieco
- Institute of Sciences of Food Production, National Research Council, via Amendola 122/O, Bari 70126, Italy.
| | - Giuseppina Mulè
- Institute of Sciences of Food Production, National Research Council, via Amendola 122/O, Bari 70126, Italy.
| |
Collapse
|
4
|
Heussner AH, Bingle LEH. Comparative Ochratoxin Toxicity: A Review of the Available Data. Toxins (Basel) 2015; 7:4253-82. [PMID: 26506387 PMCID: PMC4626733 DOI: 10.3390/toxins7104253] [Citation(s) in RCA: 202] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 09/27/2015] [Accepted: 10/15/2015] [Indexed: 11/19/2022] Open
Abstract
Ochratoxins are a group of mycotoxins produced by a variety of moulds. Ochratoxin A (OTA), the most prominent member of this toxin family, was first described by van der Merwe et al. in Nature in 1965. Dietary exposure to OTA represents a serious health issue and has been associated with several human and animal diseases including poultry ochratoxicosis, porcine nephropathy, human endemic nephropathies and urinary tract tumours in humans. More than 30 years ago, OTA was shown to be carcinogenic in rodents and since then extensive research has been performed in order to investigate its mode of action, however, this is still under debate. OTA is regarded as the most toxic family member, however, other ochratoxins or their metabolites and, in particular, ochratoxin mixtures or combinations with other mycotoxins may represent serious threats to human and animal health. This review summarises and evaluates current knowledge about the differential and comparative toxicity of the ochratoxin group.
Collapse
Affiliation(s)
- Alexandra H Heussner
- Human and Environmental Toxicology, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany.
- Department of Pharmacy, Health and Well-Being, University of Sunderland, City Campus, Sunderland SR1 3SD, UK.
| | - Lewis E H Bingle
- Department of Pharmacy, Health and Well-Being, University of Sunderland, City Campus, Sunderland SR1 3SD, UK.
| |
Collapse
|
5
|
Genetic validation of aminoacyl-tRNA synthetases as drug targets in Trypanosoma brucei. EUKARYOTIC CELL 2014; 13:504-16. [PMID: 24562907 DOI: 10.1128/ec.00017-14] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Human African trypanosomiasis (HAT) is an important public health threat in sub-Saharan Africa. Current drugs are unsatisfactory, and new drugs are being sought. Few validated enzyme targets are available to support drug discovery efforts, so our goal was to obtain essentiality data on genes with proven utility as drug targets. Aminoacyl-tRNA synthetases (aaRSs) are known drug targets for bacterial and fungal pathogens and are required for protein synthesis. Here we survey the essentiality of eight Trypanosoma brucei aaRSs by RNA interference (RNAi) gene expression knockdown, covering an enzyme from each major aaRS class: valyl-tRNA synthetase (ValRS) (class Ia), tryptophanyl-tRNA synthetase (TrpRS-1) (class Ib), arginyl-tRNA synthetase (ArgRS) (class Ic), glutamyl-tRNA synthetase (GluRS) (class 1c), threonyl-tRNA synthetase (ThrRS) (class IIa), asparaginyl-tRNA synthetase (AsnRS) (class IIb), and phenylalanyl-tRNA synthetase (α and β) (PheRS) (class IIc). Knockdown of mRNA encoding these enzymes in T. brucei mammalian stage parasites showed that all were essential for parasite growth and survival in vitro. The reduced expression resulted in growth, morphological, cell cycle, and DNA content abnormalities. ThrRS was characterized in greater detail, showing that the purified recombinant enzyme displayed ThrRS activity and that the protein localized to both the cytosol and mitochondrion. Borrelidin, a known inhibitor of ThrRS, was an inhibitor of T. brucei ThrRS and showed antitrypanosomal activity. The data show that aaRSs are essential for T. brucei survival and are likely to be excellent targets for drug discovery efforts.
Collapse
|
6
|
The carotenoid lycopene protects rats against DNA damage induced by Ochratoxin A. Toxicon 2013; 73:96-103. [DOI: 10.1016/j.toxicon.2013.07.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 06/27/2013] [Accepted: 07/02/2013] [Indexed: 12/20/2022]
|
7
|
Ringot D, Chango A, Schneider YJ, Larondelle Y. Toxicokinetics and toxicodynamics of ochratoxin A, an update. Chem Biol Interact 2006; 159:18-46. [PMID: 16293235 DOI: 10.1016/j.cbi.2005.10.106] [Citation(s) in RCA: 298] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2005] [Revised: 10/14/2005] [Accepted: 10/14/2005] [Indexed: 11/16/2022]
Abstract
Ochratoxin A (OTA) is a mycotoxin produced by fungi of two genera: Penicillium and Aspergillus. OTA has been shown to be nephrotoxic, hepatotoxic, teratogenic and immunotoxic to several species of animals and to cause kidney and liver tumours in mice and rats. Because of differences in the physiology of animal species, wide variations are seen in the toxicokinetic patterns of absorption, distribution and elimination of the toxin. Biotransformation of OTA has not been entirely elucidated. At present, data regarding OTA metabolism are controversial. Several metabolites have been characterized in vitro and/or in vivo, whereas other metabolites remain to be characterized. Several major mechanisms have been shown as involved in the toxicity of OTA: inhibition of protein synthesis, promotion of membrane peroxidation, disruption of calcium homeostasis, inhibition of mitochondrial respiration and DNA damage. The contribution of metabolites in OTA genotoxicity and carcinogenicity is still unclear. The genotoxic status of OTA is still controversial because contradictory results were obtained in various microbial and mammalian tests, notably regarding the formation of DNA adducts. More recent studies are focused on the OTA ability to disturb cellular signalling and regulation, to modulate physiological signals and thereby to influence cells viability and proliferation. The present paper offers an update on these different issues. In addition since humans and animals are likely to be simultaneously exposed to several mycotoxins, especially through their diet, the little information available on the combined effects of OTA and other mycotoxins has also been reviewed.
Collapse
Affiliation(s)
- Diana Ringot
- Institut Supérieur d'Agriculture de Beauvais, Rue Pierre Waguet, BP 30313, Beauvais, Cedex 60026, France.
| | | | | | | |
Collapse
|
8
|
Creppy EE, Baudrimont I, Betbeder AM. Prevention of nephrotoxicity of ochratoxin A, a food contaminant. Toxicol Lett 1995; 82-83:869-77. [PMID: 8597155 DOI: 10.1016/0378-4274(95)03601-6] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Ochratoxin A (OTA) is a mycotoxin produced by ubiquitous Aspergilli, mainly by Aspergillus ochraceus and also by Penicilium verrucosum. It was found all over the world in feed and human food and blood as well as in animal blood and tissues. The most threatening effects of OTA are its nephrotoxicity and carcinogenicity, since this mycotoxin is nephrotoxic to all animal species studied so far and is increasingly involved in the Balkan endemic nephropathy (BEN), a human chronic interstitial nephropathy which is most of the time associated to urinary tract tumours. Since it seems impossible to avoid contamination of foodstuffs by toxigenic fungi, detoxification and detoxication for OTA are needed. To reduce or abolish the OTA-induced toxic effects, several mechanisms were investigated. The results of these investigations showed that some of the potential antidotes were efficient in preventing the main OTA toxic effects whereas some others were not. Promising compounds are structural analogues of OTA, and/or compounds having a high binding affinity for plasma proteins such as piroxicam, a non-steroidal anti-inflammatory drug (NSAID). Some enzymes such as superoxide dismutase (SOD) and catalase, radical scavengers, vitamins, prostaglandin (PG) synthesis inhibitors, (such as piroxicam), pH modificators, adsorbant resin such as cholestyramine etc. are efficient in vivo. Some of the results obtained in vivo were already confirmed in vitro and gave useful information on how to safely use these antidotes. The most generally acting compound seems to be A19 (Aspartame), a structural analogue of OTA and phenylalanine. When given to rats A19 (25 mg/kg/48 h) combined to OTA (289 micrograms/kg/48 h) for several weeks largely prevented OTA nephrotoxicity and genotoxicity. When given after intoxication of animals with OTA it washes out the toxin efficiently from the body. In vitro, A19 (10 micrograms/ml) prevents OTA (20-500 micrograms/ml) binding to plasma proteins. Its general action without any known side effect in humans and in animals, points at A19 to be the best candidate for preventing the OTA-induced subchronic effects.
Collapse
Affiliation(s)
- E E Creppy
- Toxicology Department, University of Bordeaux, France
| | | | | |
Collapse
|
9
|
Wiger R, Størmer FC. Effects of ochratoxins A and B on prechondrogenic mesenchymal cells from chick embryo limb buds. Toxicol Lett 1990; 54:129-34. [PMID: 2260111 DOI: 10.1016/0378-4274(90)90175-l] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Prechondrogenic mesenchymal cells from the limb buds of 4-day chick embryos were cultured together with either ochratoxin A (OA) or ochratoxin B (OB) for 6 days. Both toxins inhibited the accumulation of cartilage proteoglycans and general protein synthesis in a concentration-related manner. The IC50 was 1.9 microM for OA and 6.2 microM for OB. Incubating the micromass with OA for periods ranging from 2 h up to 6 days did not produce any metabolites, indicating that OA was the proximal toxic compound in these studies. Neither preincubation with OB nor simultaneous exposure to non-toxic concentrations of OB together with various concentrations of OA influenced the toxicity of OA. The data indicate that interference of OA with general protein synthesis, both in vivo and in vitro, is an important mechanism underlying OA-induced embryotoxicity.
Collapse
Affiliation(s)
- R Wiger
- Department of Environmental Medicine, National Institute of Public Health, Oslo, Norway
| | | |
Collapse
|
10
|
Creppy EE, Chakor K, Fisher MJ, Dirheimer G. The myocotoxin ochratoxin A is a substrate for phenylalanine hydroxylase in isolated rat hepatocytes and in vivo. Arch Toxicol 1990; 64:279-84. [PMID: 2167054 DOI: 10.1007/bf01972987] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Ochratoxin A (OTA), is a myocotoxin contaminating food and feed stuffs, consisting of a chlorinated dihydroisocoumarin linked through a 7-carboxyl group to L-phenylalanine by an amide bond. When OTA (0.12-1.4 mM) is incubated with freshly isolated rat hepatocytes, it inhibits both the hydroxylation of phenylalanine (0.05 mM) to tyrosine, catalyzed by phenylalanine hydroxylase and the subsequent metabolism of tyrosine as measured by homogentisate oxidation. The IC50 of OTA for phenylalanine hydroxylation is 0.43 mM. OT alpha, (0.5-1.0 mM), the dihydroisocoumarin moiety of OTA, does not inhibit phenylalanine hydroxylase activity under these conditions. During incubations of hepatocytes with uniformly labelled [3H]-OTA and unlabelled phenylalanine, tyrosine-ochratoxin A is formed (up to 6% of the total mycotoxin added), indicating that ochratoxin can act as a substrate for phenylalanine hydroxylase. In vivo tyrosine-OTA is also found in liver of poisoned animals.
Collapse
Affiliation(s)
- E E Creppy
- Institut de Biologie Moléculaire et Cellulaire du CNRS, Université Louis Pasteur, Strasbourg, France
| | | | | | | |
Collapse
|