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Liao C, Xu F, Yu Z, Ding K, Jia Y. The Novel Role of the NLRP3 Inflammasome in Mycotoxin-Induced Toxicological Mechanisms. Vet Sci 2024; 11:291. [PMID: 39057975 PMCID: PMC11281663 DOI: 10.3390/vetsci11070291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 06/25/2024] [Accepted: 06/26/2024] [Indexed: 07/28/2024] Open
Abstract
Mycotoxins are secondary metabolites produced by several fungi and moulds that exert toxicological effects on animals including immunotoxicity, genotoxicity, hepatotoxicity, teratogenicity, and neurotoxicity. However, the toxicological mechanisms of mycotoxins are complex and unclear. The nucleotide-binding oligomerization domain (NOD)-like receptor (NLR) family pyrin domain containing 3 (NLRP3) inflammasome is a multimeric cytosolic protein complex composed of the NLRP3 sensor, ASC adapter protein, and caspase-1 effector. Activation of the NLRP3 inflammasome plays a crucial role in innate immune defence and homeostatic maintenance. Recent studies have revealed that NLRP3 inflammasome activation is linked to tissue damage and inflammation induced by mycotoxin exposure. Thus, this review summarises the latest advancements in research on the roles of NLRP3 inflammasome activation in the pathogenesis of mycotoxin exposure. The effects of exposure to multiple mycotoxins, including deoxynivalenol, aflatoxin B1, zearalenone, T-2 toxin, ochratoxin A, and fumonisim B1, on pyroptosis-related factors and inflammation-related factors in vitro and in vivo and the pharmacological inhibition of specific and nonspecific NLRP3 inhibitors are summarized and examined. This comprehensive review contributes to a better understanding of the role of the NLRP3 inflammasome in toxicity induced by mycotoxin exposure and provides novel insights for pharmacologically targeting NLRP3 as a novel anti-inflammatory agent against mycotoxin exposure.
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Affiliation(s)
- Chengshui Liao
- Laboratory of Functional Microbiology and Animal Health, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China; (C.L.); (F.X.); (Z.Y.); (K.D.)
- Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang 471023, China
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, Luoyang 471023, China
| | - Fengru Xu
- Laboratory of Functional Microbiology and Animal Health, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China; (C.L.); (F.X.); (Z.Y.); (K.D.)
- Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang 471023, China
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, Luoyang 471023, China
| | - Zuhua Yu
- Laboratory of Functional Microbiology and Animal Health, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China; (C.L.); (F.X.); (Z.Y.); (K.D.)
- Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang 471023, China
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, Luoyang 471023, China
| | - Ke Ding
- Laboratory of Functional Microbiology and Animal Health, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China; (C.L.); (F.X.); (Z.Y.); (K.D.)
- Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang 471023, China
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, Luoyang 471023, China
| | - Yanyan Jia
- Laboratory of Functional Microbiology and Animal Health, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China; (C.L.); (F.X.); (Z.Y.); (K.D.)
- Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang 471023, China
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, Luoyang 471023, China
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Althouse GC. Contaminant toxicity of concern for boars and semen used in assisted reproduction programs. Anim Reprod Sci 2024:107519. [PMID: 38897823 DOI: 10.1016/j.anireprosci.2024.107519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 05/29/2024] [Accepted: 05/30/2024] [Indexed: 06/21/2024]
Abstract
The commercial swine industry utilizes artificial insemination (AI) in their breeding programs. With this assisted reproductive technology, the process starts by obtaining fresh ejaculates from desirable boars who are housed in a dedicated facility (i.e., stud) that also contains a clean-room laboratory where semen quality is assessed and then ejaculates processed into AI doses. In concert with AI adoption, disruptions in sow herd reproductive performance have been traced back to contributions made from the boar stud. Through field investigations and research, several extrinsic contaminants have been identified that impact semen quality either at the boar or AI-dose level. These contaminants can be categorized as either biological or chemical in origin, eliciting reprotoxic outcomes at the boar level and/or spermatotoxicity at the AI-dose level. Biological contaminants include multiple genera of primarily opportunistic microbes (i.e., bacteria, fungi), along with their secondary metabolites (e.g., endotoxins, exotoxins, mycotoxins). Chemical contaminants appear to originate from products used at the stud, and include cleaning agent/disinfectant residues, leachates from gloves and plastics, semen extender impurities, purified and drinking water impurities, and pesticides (i.e., biocides, fungicides, herbicides, insecticides, wood preservatives). In conclusion, contaminants are a real and constant threat to the health and productivity of a stud, and have caused significant reproductive and economic losses in the swine industry. The knowledge gained in recognizing the types and sources of contaminants provides a solid foundation for the development and implementation of pro-active strategies that mitigate risk to the industry.
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Affiliation(s)
- G C Althouse
- Department of Clinical Studies, University of Pennsylvania, New Bolton Center, 382 West Street Road, Kennett Square, PA 19348, USA.
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Ning X, Wang L, Wang JS, Ji J, Jin S, Sun J, Ye Y, Mei S, Zhang Y, Cao J, Sun X. High-Coverage UHPLC-MS/MS Analysis of 67 Mycotoxins in Plasma for Male Infertility Exposure Studies. TOXICS 2024; 12:395. [PMID: 38922075 PMCID: PMC11209182 DOI: 10.3390/toxics12060395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/15/2024] [Accepted: 05/21/2024] [Indexed: 06/27/2024]
Abstract
Mycotoxins are a class of exogenous metabolites that are major contributors to foodborne diseases and pose a potential threat to human health. However, little attention has been paid to trace mycotoxin co-exposure situations in vivo. To address this, we devised a novel analytical strategy, both highly sensitive and comprehensive, for quantifying 67 mycotoxins in human plasma samples. This method employs isotope dilution mass spectrometry (IDMS) for approximately 40% of the analytes and utilizes internal standard quantification for the rest. The mycotoxins were classified into three categories according to their physicochemical properties, facilitating the optimization of extraction and detection parameters to improve analytical performance. The lowest limits of detection and quantitation were 0.001-0.5 μg/L and 0.002-1 μg/L, respectively, the intra-day precision ranged from 1.8% to 11.9% RSD, and the intra-day trueness ranged from 82.7-116.6% for all mycotoxins except Ecl, DH-LYS, PCA, and EnA (66.4-129.8%), showing good analytical performance of the method for biomonitoring. A total of 40 mycotoxins (including 24 emerging mycotoxins) were detected in 184 plasma samples (89 from infertile males and 95 from healthy males) using the proposed method, emphasizing the widespread exposure of humans to both traditional and emerging mycotoxins. The most frequently detected mycotoxins were ochratoxin A, ochratoxin B, enniatin B, and citrinin. The incidence of exposure to multiple mycotoxins was significantly higher in infertile males than in healthy subjects, particularly levels of ochratoxin A, ochratoxin B, and citrinin, which were significantly increased. It is necessary to carry out more extensive biological monitoring to provide data support for further study of the relationship between mycotoxins and male infertility.
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Affiliation(s)
- Xiao Ning
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China; (X.N.); (J.J.); (J.S.); (Y.Y.); (Y.Z.)
- Key Laboratory of Food Quality and Safety for State Market Regulation, National Institute of Food and Drug Control, Beijing 100050, China; (L.W.); (S.J.)
| | - Lulu Wang
- Key Laboratory of Food Quality and Safety for State Market Regulation, National Institute of Food and Drug Control, Beijing 100050, China; (L.W.); (S.J.)
| | - Jia-Sheng Wang
- Department of Environmental Health Science, College of Public Health, University of Georgia, Athens, GA 30602, USA;
| | - Jian Ji
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China; (X.N.); (J.J.); (J.S.); (Y.Y.); (Y.Z.)
| | - Shaoming Jin
- Key Laboratory of Food Quality and Safety for State Market Regulation, National Institute of Food and Drug Control, Beijing 100050, China; (L.W.); (S.J.)
| | - Jiadi Sun
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China; (X.N.); (J.J.); (J.S.); (Y.Y.); (Y.Z.)
| | - Yongli Ye
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China; (X.N.); (J.J.); (J.S.); (Y.Y.); (Y.Z.)
| | - Shenghui Mei
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China;
- Department of Clinical Pharmacology, School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
| | - Yinzhi Zhang
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China; (X.N.); (J.J.); (J.S.); (Y.Y.); (Y.Z.)
| | - Jin Cao
- Key Laboratory of Food Quality and Safety for State Market Regulation, National Institute of Food and Drug Control, Beijing 100050, China; (L.W.); (S.J.)
| | - Xiulan Sun
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China; (X.N.); (J.J.); (J.S.); (Y.Y.); (Y.Z.)
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Hassaneen NH, Hemeda SA, El Nahas AF, Fadl SE, El-Diasty EM. Camel milk or silymarin could improve the negative effects that experimentally produced by aflatoxin B1 on rat's male reproductive system. BMC Vet Res 2024; 20:108. [PMID: 38500117 PMCID: PMC10946164 DOI: 10.1186/s12917-024-03965-5] [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: 04/25/2023] [Accepted: 03/03/2024] [Indexed: 03/20/2024] Open
Abstract
BACKGROUND Camel milk and silymarin have many different beneficial effects on several animal species. Meanwhile, Aflatoxins are mycotoxins with extraordinary potency that pose major health risks to several animal species. Additionally, it has been documented that aflatoxins harm the reproductive systems of a variety of domestic animals. The present design aimed to investigate the impact of aflatoxin B1 (AFB1) on rat body weight and reproductive organs and the ameliorative effects of camel milk and silymarin through measured serum testosterone, testes pathology, and gene expression of tumor necrosis factor (TNF-α), luteinizing hormone receptor (LHR), and steroidogenic acute regulatory protein (StAR) in the testes. A total of sixty mature male Wister white rats, each weighing an average of 83.67 ± 0.21 g, were used. There were six groups created from the rats. Each division had ten rats. The groups were the control (without any treatment), CM (1 ml of camel milk/kg body weight orally), S (20 mg silymarin/kg b. wt. suspension, orally), A (1.4 mg aflatoxin/kg diet), ACM (aflatoxin plus camel milk), and AS (aflatoxin plus silymarin). RESULTS The results indicated the positive effects of camel milk and silymarin on growth, reproductive organs, and gene expression of TNF-α, LHR, and StAR with normal testicular architecture. Also, the negative effect of AFB1 on the rat's body weight and reproductive organs, as indicated by low body weight and testosterone concentration, was confirmed by the results of histopathology and gene expression. However, these negative effects were ameliorated by the ingestion of camel milk and silymarin. CONCLUSION In conclusion, camel milk and silymarin could mitigate the negative effect of AFB1 on rat body weight and reproductive organs.
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Affiliation(s)
- Nahla H Hassaneen
- Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Matrouh University, Matrouh, Egypt.
| | - Shabaan A Hemeda
- Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Abeer F El Nahas
- Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Sabreen E Fadl
- Biochemistry Department, Faculty of Veterinary Medicine, Matrouh University, Matrouh, Egypt
| | - Eman M El-Diasty
- Mycology Department, Animal Health Research Institute Dokki, Giza (ARC), Egypt
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Liu T, Liu G, Xu Y, Huang Y, Zhang Y, Wu Y, Xu Y. Zearalenone Induces Blood-Testis Barrier Damage through Endoplasmic Reticulum Stress-Mediated Paraptosis of Sertoli Cells in Goats. Int J Mol Sci 2023; 25:553. [PMID: 38203724 PMCID: PMC10778680 DOI: 10.3390/ijms25010553] [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: 12/04/2023] [Revised: 12/28/2023] [Accepted: 12/29/2023] [Indexed: 01/12/2024] Open
Abstract
Zearalenone (ZEA) is present worldwide as a serious contaminant of food and feed and causes male reproductive toxicity. The implication of paraptosis, which is a nonclassical paradigm of cell death, is unclear in ZEA-induced male reproductive disorders. In this study, the toxic effects of ZEA on the blood-testis barrier (BTB) and the related mechanisms of paraptosis were detected in goats. ZEA exposure, in vivo, caused a significant decrease in spermatozoon quality, the destruction of seminiferous tubules, and damage to the BTB integrity. Furthermore, ZEA exposure to Sertoli cells (SCs) in vitro showed similar dysfunction in structure and barrier function. Importantly, the formation of massive cytoplasmic vacuoles in ZEA-treated SCs corresponded to the highly swollen and dilative endoplasmic reticulum (ER), and paraptosis inhibition significantly alleviated ZEA-induced SC death and vacuolization, which indicated the important contribution of paraptosis in ZEA-induced BTB damage. Meanwhile, the expression of ER stress marker proteins was increased after ZEA treatment but decreased under the inhibition of paraptosis. The vacuole formation and SC death, induced by ZEA, were remarkably blocked by ER stress inhibition. In conclusion, these results facilitate the exploration of the mechanisms of the SC paraptosis involved in ZEA-induced BTB damage in goats.
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Affiliation(s)
- Tengfei Liu
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China; (T.L.); (G.L.); (Y.X.); (Y.Z.)
| | - Gengchen Liu
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China; (T.L.); (G.L.); (Y.X.); (Y.Z.)
| | - Yinghuan Xu
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China; (T.L.); (G.L.); (Y.X.); (Y.Z.)
| | - Yuqi Huang
- College of Life Sciences, Northwest A&F University, Xianyang 712100, China;
| | - Yunxuan Zhang
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China; (T.L.); (G.L.); (Y.X.); (Y.Z.)
| | - Yongjie Wu
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China; (T.L.); (G.L.); (Y.X.); (Y.Z.)
| | - Yongping Xu
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China; (T.L.); (G.L.); (Y.X.); (Y.Z.)
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Li H, Su M, Lin H, Li J, Wang S, Ye L, Li X, Ge R. Patulin Stimulates Progenitor Leydig Cell Proliferation but Delays Its Differentiation in Male Rats during Prepuberty. Toxins (Basel) 2023; 15:581. [PMID: 37756007 PMCID: PMC10538017 DOI: 10.3390/toxins15090581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 09/14/2023] [Accepted: 09/15/2023] [Indexed: 09/28/2023] Open
Abstract
Patulin is a mycotoxin with potential reproductive toxicity. We explored the impact of patulin on Leydig cell (LC) development in male rats. Male Sprague Dawley rats (21 days postpartum) were gavaged patulin at doses of 0.5, 1, and 2 mg/kg/day for 7 days. Patulin markedly lowered serum testosterone at ≥0.5 mg/kg and progesterone at 1 and 2 mg/kg, while increasing LH levels at 2 mg/kg. Patulin increased the CYP11A1+ (cholesterol side-chain cleavage, a progenitor LC biomarker) cell number and their proliferation at 1 and 2 mg/kg. Additionally, patulin downregulated Lhcgr (luteinizing hormone receptor), Scarb1 (high-density lipoprotein receptor), and Cyp17a1 (17α-hydroxylase/17,20-lyase) at 1 and 2 mg/kg. It increased the activation of pAKT1 (protein kinase B), pERK1/2 (extracellular signal-related kinases 1 and 2), pCREB (cyclic AMP response binding protein), and CCND1 (cyclin D1), associated with cell cycle regulation, in vivo. Patulin increased EdU incorporation into R2C LC and stimulated cell cycle progression in vitro. Furthermore, patulin showed a direct inhibitory effect on 11β-HSD2 (11β-hydroxysteroid dehydrogenase 2) activity, which eliminates the adverse effects of glucocorticoids. This study provides insights into the potential mechanisms via which patulin affects progenitor LC development in young male rats.
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Affiliation(s)
- Huitao Li
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou 325027, China; (H.L.); (M.S.); (H.L.); (J.L.); (S.W.); (L.Y.); (X.L.)
- Key Laboratory of Pediatric Anesthesiology, Ministry of Education, Wenzhou Medical University, Wenzhou 325027, China
- Key Laboratory of Environment and Male Reproductive Medicine of Wenzhou, Key Laboratory of Structural Malformations in Children of Zhejiang Province, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou 325027, China
| | - Ming Su
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou 325027, China; (H.L.); (M.S.); (H.L.); (J.L.); (S.W.); (L.Y.); (X.L.)
| | - Hang Lin
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou 325027, China; (H.L.); (M.S.); (H.L.); (J.L.); (S.W.); (L.Y.); (X.L.)
| | - Jingjing Li
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou 325027, China; (H.L.); (M.S.); (H.L.); (J.L.); (S.W.); (L.Y.); (X.L.)
| | - Shaowei Wang
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou 325027, China; (H.L.); (M.S.); (H.L.); (J.L.); (S.W.); (L.Y.); (X.L.)
| | - Lei Ye
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou 325027, China; (H.L.); (M.S.); (H.L.); (J.L.); (S.W.); (L.Y.); (X.L.)
| | - Xingwang Li
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou 325027, China; (H.L.); (M.S.); (H.L.); (J.L.); (S.W.); (L.Y.); (X.L.)
| | - Renshan Ge
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou 325027, China; (H.L.); (M.S.); (H.L.); (J.L.); (S.W.); (L.Y.); (X.L.)
- Key Laboratory of Pediatric Anesthesiology, Ministry of Education, Wenzhou Medical University, Wenzhou 325027, China
- Key Laboratory of Environment and Male Reproductive Medicine of Wenzhou, Key Laboratory of Structural Malformations in Children of Zhejiang Province, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou 325027, China
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Kalo D, Mendelson P, Komsky-Elbaz A, Voet H, Roth Z. The Effect of Mycotoxins and Their Mixtures on Bovine Spermatozoa Characteristics. Toxins (Basel) 2023; 15:556. [PMID: 37755982 PMCID: PMC10534433 DOI: 10.3390/toxins15090556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 08/30/2023] [Accepted: 09/04/2023] [Indexed: 09/28/2023] Open
Abstract
There is growing concern about the effects of mycotoxins on mammalian reproduction. Although the effects of single mycotoxins have been well documented, the impact of their mixtures on spermatozoon quality is less known. Here, frozen-thawed semen (n = 6 bulls) was in-vitro-cultured (2 h) without (control) or with (i) a single mycotoxin [zearalenone (ZEN), ochratoxin A (OTA), toxin 2 (T2), and diacetoxyscirpenol (DAS)] in a dose-response manner; (ii) binary mixtures (OTA + T2, OTA + ZEN, OTA + DAS, ZEN + T2, DAS + T2 and ZEN + DAS); or (iii) ternary mixtures (OTA + DAS + T2, OTA + ZEN + T2, and ZEN + DAS + T2). Then, the spermatozoa quality was characterized according to its plasma- and acrosome-membrane integrity, mitochondrial membrane potential, and oxidation status by a flow cytometer. Exposure to single mycotoxins or binary mixtures did not affect the spermatozoa characteristics. However, exposure to the ternary mixtures, OTA + DAS + T2 and OTA + ZEN + T2, reduced (p < 0.05) the mitochondrial membrane potential relative to the control. In addition, OTA + ZEN + T2 increased (p < 0.05) the proportion of spermatozoa with reactive oxygen species relative to the control. The most suggested interaction effect between the mycotoxins was found to be an additive one. A synergistic interaction, mainly regarding the oxidation status of the spermatozoa, was also found between the mycotoxins. The current study sheds light on the potential risk of exposing spermatozoa to a mycotoxin mixture.
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Affiliation(s)
- Dorit Kalo
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot 7610001, Israel
| | - Paz Mendelson
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot 7610001, Israel
| | - Alisa Komsky-Elbaz
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot 7610001, Israel
| | - Hillary Voet
- Department of Agricultural Economics and Management, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot 7610001, Israel
| | - Zvi Roth
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot 7610001, Israel
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Owumi SE, Akinwunmi AO, Nwozo SO, Arunsi UO, Oyelere AK. Aflatoxin B1-induced dysfunction in male rats' reproductive indices were abated by Sorghum bicolor (L.Moench) hydrophobic fraction. Reprod Toxicol 2023; 120:108425. [PMID: 37355213 DOI: 10.1016/j.reprotox.2023.108425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/14/2023] [Accepted: 06/16/2023] [Indexed: 06/26/2023]
Abstract
The burden of infertility distresses millions of families worldwide. The harmful effects of aflatoxin B1 (AFB1) on the reproductive system involve oxidative stress, culminating in inflammation and cellular apoptosis. The phytochemical in Sorghum bicolor is rich in antioxidants and anti-inflammatory activities. The effect of Sorghum bicolor (L.) Moench (SBE-HP) extract -hydrophobic fraction- enriched in Apigenin (API) was investigated in rats chronically dosed with AFB1 and the likely mechanism (s) of SBE-HP to protect against AFB1-induced reproductive toxicity. Adult Wistar male rats (twenty-four) were selected randomly and allocated into four groups. Cohort 1 was administered 0.05 % carboxymethyl cellulose (CMC); cohort 2 received AFB1 (50 µg/kg) alone; while cohorts 3 and 4 received 5 & 10 mg/kg of (SBE-HP) respectively, along with 50 µg/kg of AFB1. After 28 days, AFB1 induced remarkable reproductive toxicity as evidenced by increased sperm abnormalities, lowered sperm quality and motility, altered serum hormonal levels and testicular enzyme activities, decreased anti-oxidants, increased pro-oxidants, apoptotic and inflammatory biomarkers, as well as altered histoarchitectural structure of the testis, epididymis, and hypothalamus of rats. API-enriched extract of S. bicolor reduced AFB1-induced oxidative, inflammatory, apoptotic, and histological derangement by improving sperm function parameters, testicular enzymes, and reproductive hormones. Anti-oxidant levels and anti-inflammatory mediators were increased while decreases in the activities and levels of pro-oxidants, pro-inflammatory molecules and caspase-9 occurred in the rats' testes, epididymis, and hypothalamus. API-enriched S. bicolor protected the testes, epididymis, and hypothalamus of male rats exposed to AFB1 by modulating oxidative stress, inflammation, and apoptosis.
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Affiliation(s)
- Solomon E Owumi
- Cancer Research and Molecular Biology Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria.
| | | | - Sarah O Nwozo
- Nutrition and Industrial Biochemistry Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Uche O Arunsi
- School of Chemistry & Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta 30332-0400, GA, United States
| | - Adegboyega K Oyelere
- School of Chemistry & Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta 30332-0400, GA, United States
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9
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Tebbi CK. Mycoviruses in Fungi: Carcinogenesis of Fungal Agents May Not Always Be Mycotoxin Related. J Fungi (Basel) 2023; 9:jof9030368. [PMID: 36983536 PMCID: PMC10052198 DOI: 10.3390/jof9030368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/02/2023] [Accepted: 03/09/2023] [Indexed: 03/30/2023] Open
Abstract
Certain viruses have been found to induce diverse biological pathways to carcinogenesis, evidenced by the presence of viral gene products in some tumors. Despite the fact that many fungal agents contain mycoviruses, until recently, their possible direct effects on human health, including carcinogenesis and leukemogenesis, had not been explored. In this regard, most studies of fungal agents have rightly concentrated on their mycotoxin formation and effects. Recently, the direct role of yeasts and fungi in the etiology of cancers, including leukemia, have been investigated. While greater attention has been placed on the carcinogenic effects of Candida, the role of filamentous fungi in carcinogenesis has also been explored. Recent findings from studies using the enzyme-linked immunosorbent assay (ELISA) technique indicate that the plasma of patients with acute lymphoblastic leukemia (ALL) uniformly contains antibodies for a certain mycovirus-containing Aspergillus flavus, while controls are negative. The exposure of mononuclear leukocytes from patients with ALL in full remission, and long-term survivors, to the product of this organism was reported to result in the re-development of typical genetics and cell surface phenotypes characteristic of active ALL. Mycoviruses are known to be able to significantly alter the biological characteristics and functions of their host. The possible carcinogenic and leukemogenic role of mycoviruses, with and without their host, needs to be further investigated.
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Affiliation(s)
- Cameron K Tebbi
- Children's Cancer Research Group Laboratory, 13719 North Nebraska Avenue, Suite #108, Tampa, FL 33613-3305, USA
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10
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Islam MT, Martorell M, González-Contreras C, Villagran M, Mardones L, Tynybekov B, Docea AO, Abdull Razis AF, Modu B, Calina D, Sharifi-Rad J. An updated overview of anticancer effects of alternariol and its derivatives: underlying molecular mechanisms. Front Pharmacol 2023; 14:1099380. [PMID: 37033617 PMCID: PMC10076758 DOI: 10.3389/fphar.2023.1099380] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 03/14/2023] [Indexed: 04/11/2023] Open
Abstract
Alternariol is a toxic metabolite of Alternaria fungi and studies have shown multiple potential pharmacological effects. To outline the anticancer effects and mechanisms of alternariol and its derivatives based on database reports, an updated search of PubMed/MedLine, ScienceDirect, Web of Science, and Scopus databases was performed with relevant keywords for published articles. The studies found to suggest that this mycotoxin and/or its derivatives have potential anticancer effects in many pharmacological preclinical test systems. Scientific reports indicate that alternariol and/or its derivatives exhibit anticancer through several pathways, including cytotoxic, reactive oxygen species leading to oxidative stress and mitochondrial dysfunction-linked cytotoxic effect, anti-inflammatory, cell cycle arrest, apoptotic cell death, genotoxic and mutagenic, anti-proliferative, autophagy, and estrogenic and clastogenic mechanisms. In light of these results, alternariol may be one of the hopeful chemotherapeutic agents.
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Affiliation(s)
- Muhammad Torequl Islam
- Department of Pharmacy, Life Science Faculty, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj, Bangladesh
| | - Miquel Martorell
- Department of Nutrition and Dietetics, Faculty of Pharmacy, University of Concepción, Concepción, Chile
- Centre for Healthy Living, University of Concepción, Concepción, Chile
- Universidad de Concepción, Unidad de Desarrollo Tecnológico, UDT, Concepción, Chile
- *Correspondence: Miquel Martorell, ; Ahmad Faizal Abdull Razis, ; Daniela Calina, ; Javad Sharifi-Rad,
| | - Carlos González-Contreras
- Department of Nutrition and Dietetics, Faculty of Pharmacy, University of Concepción, Concepción, Chile
| | - Marcelo Villagran
- Biomedical Sciences Research Laboratory, Faculty of Medicine, Universidad Católica de la Santísima Concepción, Concepción, Chile
| | - Lorena Mardones
- Biomedical Sciences Research Laboratory, Faculty of Medicine, Universidad Católica de la Santísima Concepción, Concepción, Chile
| | - Bekzat Tynybekov
- Department of Biodiversity of Bioresources, Al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - Anca Oana Docea
- Department of Toxicology, University of Medicine and Pharmacy of Craiova, Craiova, Romania
| | - Ahmad Faizal Abdull Razis
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, Selangor, Malaysia
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Selangor, Malaysia
- *Correspondence: Miquel Martorell, ; Ahmad Faizal Abdull Razis, ; Daniela Calina, ; Javad Sharifi-Rad,
| | - Babagana Modu
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Selangor, Malaysia
- Department of Biochemistry, Faculty of Science, University of Maiduguri, Maiduguri, Nigeria
| | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, Craiova, Romania
- *Correspondence: Miquel Martorell, ; Ahmad Faizal Abdull Razis, ; Daniela Calina, ; Javad Sharifi-Rad,
| | - Javad Sharifi-Rad
- Facultad de Medicina, Universidad del Azuay, Cuenca, Ecuador
- *Correspondence: Miquel Martorell, ; Ahmad Faizal Abdull Razis, ; Daniela Calina, ; Javad Sharifi-Rad,
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11
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New evidence for deleterious effects of environmental contaminants on the male gamete. Anim Reprod Sci 2022; 246:106886. [PMID: 34774338 DOI: 10.1016/j.anireprosci.2021.106886] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 12/14/2022]
Abstract
The decreasing trend in human and domestic animal fertility in recent decades has resulted in the question of whether reduced sperm quality is associated with changes in global climate and the environment. Proposed causes for reduced sperm quality include environmental contaminants, which enter into the body of animals through the food chain and are transported to the reproductive tract, where contaminating agents can have effects on fertilization capacities of gametes. In this review, there is a focus on various environmental contaminants and potential effects on male fertility. Human-derived contaminants, particularly endocrine-disrupting phthalates and the pesticide atrazine, are discussed. Naturally occurring toxins are also addressed, in particular mycotoxins such as aflatoxin which can be components in food consumed by humans and animals. Mechanisms by which environmental contaminants reduce male fertility are not clearly defined; however, are apparently multifactorial (i.e., direct and indirect effects) with there being diverse modes of action. Results from studies with humans, rodents and domestic animals indicate there are deleterious effects of contaminants on male gametes at various stages of spermatogenesis (i.e., in the testis) during passage through the epididymis, and in mature spermatozoa, after ejaculation and during capacitation. Considering there is never detection of a single contaminant, this review addresses synergistic or additive effects of combinations of contaminants. There is new evidence highlighted for the long-lasting effects of environmental contaminants on spermatozoa and developing embryos. Understanding the risk associated with environmental contaminants for animal reproduction may lead to new management strategies, thereby improving reproductive processes.
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12
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Owumi SE, Otunla MT, Arunsi UO, Oyelere AK. Apigeninidin-enriched Sorghum bicolor (L. Moench) extracts alleviate Aflatoxin B 1-induced dysregulation of male rat hypothalamic-reproductive axis. Exp Biol Med (Maywood) 2022; 247:1301-1316. [PMID: 35658587 PMCID: PMC9442456 DOI: 10.1177/15353702221098060] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
We examined the protective effect of the apigeninidin (API)-enriched fraction from Sorghum bicolor sheaths extracts (SBE-05, SBE-06, and SBE-07) against aflatoxin B1 (AFB1)-induced dysregulation of male rat's reproductive system that may trigger infertility. Male rats (160 ± 12 g) were treated with AFB1 (50 µg/kg) along with 5 or 10 mg/kg of SBE-05, SBE-06, and SBE-07 for 28 days. Subsequently, we assessed the reproductive hormone-prolactin, FSH, LH, testosterone levels, and testicular function enzymes. Moreover, we examined rats' testes, epididymis, and hypothalamus for oxidative and inflammatory stress biomarkers, caspase-9 activity and tissues pathology. We observed that comparative to AFB1 alone treated rats, API co-treatment significantly (p < 0.05) abated the AFB1-mediated decrease in prolactin and antioxidant defenses and lessened lipid peroxidation (LPO) and reactive oxygen and nitrogen species levels in the examined organs-testes, epididymis, and hypothalamus. API abated AFB1-induced hormone decreases-testosterone, FSH, and LH; and caused improvement in sperm quantity and quality. API lessened AFB1-mediated increase in pro-inflammatory cytokine, increased interleukin-10 level, an anti-inflammatory cytokine and reduced caspase-9 activities. In addition, API reduced alterations in the examined tissue histology. Our findings suggest that S. bicolor API-enrich extracts have active antioxidative, antiapoptotic, and anti-inflammatory activities, which can protect against AFB1-induced dysfunction of the hypothalamic-pituitary-gonadal axis.
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Affiliation(s)
- Solomon E Owumi
- Cancer Research and Molecular Biology
Laboratories, NB 302, Department of Biochemistry, Faculty of Basic Medical Sciences,
University of Ibadan, Ibadan 200005, Nigeria,Solomon E Owumi.
| | - Moses T Otunla
- Cancer Research and Molecular Biology
Laboratories, NB 302, Department of Biochemistry, Faculty of Basic Medical Sciences,
University of Ibadan, Ibadan 200005, Nigeria
| | - Uche O Arunsi
- Department of Cancer Immunology and
Biotechnology, School of Medicine, University of Nottingham, Nottingham NG7 2RD,
UK
| | - Adegboyega K Oyelere
- School of Chemistry & Biochemistry,
Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of
Technology, Atlanta, GA 30332-0400, USA
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13
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Tassis PD, Reisinger N, Nagl V, Tzika E, Schatzmayr D, Mittas N, Basioura A, Michos I, Tsakmakidis IA. Comparative Effects of Deoxynivalenol, Zearalenone and Its Modified Forms De-Epoxy-Deoxynivalenol and Hydrolyzed Zearalenone on Boar Semen In Vitro. Toxins (Basel) 2022; 14:toxins14070497. [PMID: 35878236 PMCID: PMC9317656 DOI: 10.3390/toxins14070497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 02/06/2023] Open
Abstract
Deoxynivalenol (DON) and zearalenone (ZEN) are described as detrimental factors to sow and boar fertility. In comparison, literature reports on the impact of modified forms of DON and ZEN, such as de-epoxy-DON (DOM-1) and hydrolyzed ZEN (HZEN), on swine reproduction are scarce. The aim of our study was to compare the effects of DON, DOM-1, ZEN and HZEN on boar semen in vitro. To this end, pooled boar semen ejaculates from two adult boars were treated with either 50.6 μM DON, 62.8 μM ZEN or equimolar concentrations of DOM-1 and HZEN, respectively (dilution volume of v/v 0.7% DMSO in all cases). Effects on semen motility, morphology, viability, hypo-osmotic swelling test reaction and DNA integrity were investigated hourly up to four hours of incubation. DON negatively affected particular parameters evaluated with a computer-assisted sperm analysis system (CASA), such as immotile spermatozoa and progressive motile spermatozoa, whereas those effects were absent in the case of DOM-1 treatment. In contrast to HZEN, ZEN affected almost all CASA parameters. Furthermore, only ZEN decreased the proportion of viable spermatozoa and increased the proportion of spermatozoa with abnormalities. In conclusion, DON and ZEN negatively affected boar semen in vitro, whereas equimolar concentrations of DOM-1 and HZEN did not induce harmful effects.
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Affiliation(s)
- Panagiotis D. Tassis
- Farm Animals Clinic, School of Veterinary Medicine, Aristotle University of Thessaloniki, 54627 Thessaloniki, Greece; (E.T.); (I.M.); (I.A.T.)
- Correspondence:
| | - Nicole Reisinger
- DSM-BIOMIN Research Center, Technopark 1, 3430 Tulln, Austria; (N.R.); (V.N.); (D.S.)
| | - Veronika Nagl
- DSM-BIOMIN Research Center, Technopark 1, 3430 Tulln, Austria; (N.R.); (V.N.); (D.S.)
| | - Eleni Tzika
- Farm Animals Clinic, School of Veterinary Medicine, Aristotle University of Thessaloniki, 54627 Thessaloniki, Greece; (E.T.); (I.M.); (I.A.T.)
| | - Dian Schatzmayr
- DSM-BIOMIN Research Center, Technopark 1, 3430 Tulln, Austria; (N.R.); (V.N.); (D.S.)
| | - Nikolaos Mittas
- Department of Chemistry, School of Science, International Hellenic University, 65404 Kavala, Greece;
| | - Athina Basioura
- Department of Agriculture, School of Agricultural Sciences, University of Western Macedonia, 53100 Florina, Greece;
| | - Ilias Michos
- Farm Animals Clinic, School of Veterinary Medicine, Aristotle University of Thessaloniki, 54627 Thessaloniki, Greece; (E.T.); (I.M.); (I.A.T.)
| | - Ioannis A. Tsakmakidis
- Farm Animals Clinic, School of Veterinary Medicine, Aristotle University of Thessaloniki, 54627 Thessaloniki, Greece; (E.T.); (I.M.); (I.A.T.)
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14
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Chiminelli I, Spicer LJ, Maylem ERS, Caloni F. Emerging mycotoxins and reproductive effects in animals: A short review. J Appl Toxicol 2022; 42:1901-1909. [PMID: 35229323 DOI: 10.1002/jat.4311] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/19/2022] [Accepted: 02/23/2022] [Indexed: 11/09/2022]
Abstract
Emerging Fusarium mycotoxins beauvericin (BEA), enniatins (ENNs) and moniliformin (MON) are gaining increasing interest due to their wide presence especially in cereals and grain-based products. In vitro and in vivo studies indicate that Fusarium mycotoxins can be implicated in reproductive disorders in animals. Of these mycotoxins BEA may affect reproductive functions, impairing the development of oocytes in pigs and sheep. Studies show dramatic inhibitory effects of BEA and ENNA on bovine granulosa cell steroidogenesis. ENNs also inhibit boar sperm motility and cause detrimental effects on embryos in mice and pigs. Although little data are reported on reproductive effects of MON, in vitro studies show inhibitory effects of MON on Chinese hamster ovary cells. The present review aims to summarize the reproductive toxicological effects of emerging Fusarium mycotoxins BEA, ENNs and MON on embryo development, ovarian function, and testicular function of animals. In vitro and in vivo toxicological data are reported although additional studies are needed for proper risk assessment.
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Affiliation(s)
- I Chiminelli
- Department of Environmental Science and Policy (ESP), Università degli Studi di Milano, Milan, Italy
| | - L J Spicer
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK, USA
| | | | - F Caloni
- Department of Environmental Science and Policy (ESP), Università degli Studi di Milano, Milan, Italy
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15
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Hamza ZK, Hathout AS, Ostroff G, Soto E, Sabry BA, El-Hashash MA, Hassan NS, Aly SE. Assessment of the protective effect of yeast cell wall β-glucan encapsulating humic acid nanoparticles as an aflatoxin B 1 adsorbent in vivo. J Biochem Mol Toxicol 2021; 36:e22941. [PMID: 34726330 DOI: 10.1002/jbt.22941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 07/25/2021] [Accepted: 10/18/2021] [Indexed: 12/16/2022]
Abstract
This study aimed to assess the protective effect of encapsulating humic acid-iron complexed nanoparticles (HA-Fe NPs) inside glucanmannan lipid particles (GMLPs) extracted from yeast cell wall against aflatoxin B (AFB1 ) toxicity in vivo. Four groups of male Sprague-Dawley rats were treated orally for 2 weeks included the control group, AFB1 treated group (80 µg/kg b.w); GMLP/HA-Fe NPs treated group (0.5 mg/kg b.w), and the group treated with AFB1 plus GMLP/HA-Fe NPs. GMLPs are empty 3-4 micron permeable microspheres that provide an efficient system for the synthesis and encapsulation of AFB1 -absorbing nanoparticles (NPs). Humic acid nanoparticles (HA-NPs) were incorporated inside the GMLP cavity by complexation with ferric chloride. In vivo study revealed that AFB1 significantly elevated serum alanine aminotransferase, aspartate aminotransferase, creatinine, uric acid, urea, cholesterol, triglycerides, LDL, malondialdehyde, and nitric oxide. It significantly decreased total protein, high-density lipoprotein, hepatic and renal CAT and glutathione peroxidase content and induced histological changes in the liver and kidney (p ≤ 0.05). The coadministration of the synthesized formulation GMLP/HA-Fe NPs with AFB1 has a protective effect against AFB1 -induced hepato-nephrotoxicity, oxidative stress and histological alterations in the liver and kidney.
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Affiliation(s)
- Zeinab K Hamza
- Food Toxicology and Contaminants Department, National Research Centre, Dokki, Egypt.,Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Amal S Hathout
- Food Toxicology and Contaminants Department, National Research Centre, Dokki, Egypt
| | - Gary Ostroff
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Ernesto Soto
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Bassem A Sabry
- Food Toxicology and Contaminants Department, National Research Centre, Dokki, Egypt
| | - Maher A El-Hashash
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Nabila S Hassan
- Pathology Department, National Research Centre, Dokki, Egypt
| | - Soher E Aly
- Food Toxicology and Contaminants Department, National Research Centre, Dokki, Egypt
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16
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Akinola LK, Uzairu A, Shallangwa GA, Abechi SE. In silico prediction of nuclear receptor binding to polychlorinated dibenzofurans and its implication on endocrine disruption in humans and wildlife. Curr Res Toxicol 2021; 2:357-365. [PMID: 34693345 PMCID: PMC8515090 DOI: 10.1016/j.crtox.2021.09.003] [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: 06/01/2021] [Revised: 09/10/2021] [Accepted: 09/24/2021] [Indexed: 11/28/2022] Open
Abstract
Polychlorinated dibenzofurans (PCDFs) are known to cause endocrine disruption in humans and wildlife but the mechanisms underlying this disruption have not been adequately investigated. In this paper, the susceptibility of the endocrine system to disruption by PCDF congeners via nuclear receptor binding was studied using molecular docking simulation. Findings revealed that some PCDF congeners exhibit high probabilities of binding to androgen receptor in its agonistic and antagonistic conformations. In depth molecular docking analysis of the receptor-ligand complexes formed by PCDFs with androgen receptor in its agonistic and antagonistic conformations showed that, these complexes were stabilized by electrostatic, van der Waals, pi-effect and hydrophobic interactions. It was also observed that PCDF molecules mimic the modes of interaction observed in androgen-testosterone and androgen-bicalutamide complexes, utilizing between 65 and 83% of the amino acid residues used by the co-crystallized ligands for binding. This computational study suggests that some PCDF congeners may act as agonists and antagonists of androgen receptor in humans and wildlife via inapproprate binding to the receptor.
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Affiliation(s)
- Lukman K. Akinola
- Department of Chemistry, Ahmadu Bello University, Zaria, Nigeria
- Department of Chemistry, Bauchi State University, Gadau, Nigeria
| | - Adamu Uzairu
- Department of Chemistry, Ahmadu Bello University, Zaria, Nigeria
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17
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Gerez J, Gomes A, Erthal R, Fernandes G, Matos R, Verri W, Gloria E, Bracarense A. Effects of deoxynivalenol exposure at peripuberty over testicles of rats: structural and functional alterations. WORLD MYCOTOXIN J 2021. [DOI: 10.3920/wmj2020.2667] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Deoxynivalenol (DON) is related to reduced reproductive performance in males and females in several species. Children and adolescents showed a high risk of exposure to DON, however, no study has evaluated reproductive effects of DON at puberty. The present study aimed to evaluate the effects of DON at peripuberty on the testicles of pubertal rats. To achieve this, 10 Wistar rats (28 days old) were fed for 28 days with a DON-contaminated diet (9.4 mg/kg) or a control diet. After the experimental period, rats (56 days old) were euthanised and the following evaluations were performed in the testicles: dynamics of spermatogenesis, tubular morphometry, number of Sertoli cells and Leydig cells, analysis of caspase-3 expression, and the index of cell proliferation using the nucleolus organising regions (NOR) method. Ingestion of DON-contaminated diet induced a significant reduction in the number of Sertoli and Leydig cells and the number of seminiferous tubules in stage XIV. A significant increase in the number of NORs in seminiferous tubules in stage I-VI was observed in animals receiving the DON diet. No significant difference was noted in tubular morphometry or caspase-3 expression. Taken together, our results unravelled that the peripubertal exposure to DON compromised the testicular structure of pubertal rats, changing the dynamics of spermatogenesis.
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Affiliation(s)
- J.R. Gerez
- Laboratory of Animal Pathology, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, km 380, 86057-970, Londrina, Paraná, Brazil
| | - A.L.P.L. Gomes
- Laboratory of Animal Pathology, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, km 380, 86057-970, Londrina, Paraná, Brazil
| | - R.P. Erthal
- Laboratory of Toxicology and Metabolic Reproductive Disorders, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, km 380, 86057-970, Londrina, Paraná, Brazil
| | - G.S.A. Fernandes
- Laboratory of Toxicology and Metabolic Reproductive Disorders, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, km 380, 86057-970, Londrina, Paraná, Brazil
| | - R.L.N. Matos
- Laboratory of Animal Pathology, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, km 380, 86057-970, Londrina, Paraná, Brazil
| | - W.A. Verri
- Laboratory of Pain, Inflammation, Neuropathy and Cancer, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, km 380, 86057-970, Londrina, Paraná, Brazil
| | - E.M. Gloria
- Department of Biological Sciences, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, São Paulo, Brazil
| | - A.P.F.R.L. Bracarense
- Laboratory of Animal Pathology, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, km 380, 86057-970, Londrina, Paraná, Brazil
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18
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Tvrdá E, Greifová H, Ďuračka M, Ondruška Ľ, Halenár M, Kolesárová A. Comparative analysis of the detrimental in vitro effects of three fusariotoxins on the selected structural and functional characteristics of rabbit spermatozoa. Drug Chem Toxicol 2021; 45:2519-2527. [PMID: 34380342 DOI: 10.1080/01480545.2021.1962690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
In this study, we evaluated the in vitro effects of 1-50 μM zearalenone (ZEA), deoxynivalenol (DON) and T-2 toxin (T-2) on rabbit spermatozoa for as much as 8 h of in vitro exposure. Our results indicate that all sperm quality parameters were negatively affected by these fusariotoxins in a time- and dose-dependent manner. The most prominent structure affected by ZEA was the plasma membrane, exhibiting alterations consistent with the onset of apoptosis and reactive oxygen species (ROS) overproduction. This correlated with the most prominent decline of the sperm motility among all selected fusariotoxins. Significant necrotic changes and mitochondrial dysfunction were primarily responsible for the sperm damage in the presence of T-2. Finally, exposure of spermatozoa to DON led to a significant decrease in the DNA integrity. This study may provide new information on the specific mechanisms of action involved in the in vitro toxic behavior of fusariotoxins on male gametes.
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Affiliation(s)
- Eva Tvrdá
- Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture, Nitra, Slovakia
| | - Hana Greifová
- Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture, Nitra, Slovakia
| | - Michal Ďuračka
- Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture, Nitra, Slovakia
| | - Ľubomír Ondruška
- Institute of Small Farm Animals, Research Institute for Animal Production, Nitra, Slovakia
| | - Marek Halenár
- Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture, Nitra, Slovakia
| | - Adriana Kolesárová
- Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture, Nitra, Slovakia
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Aflatoxin Biosynthesis, Genetic Regulation, Toxicity, and Control Strategies: A Review. J Fungi (Basel) 2021; 7:jof7080606. [PMID: 34436145 PMCID: PMC8397101 DOI: 10.3390/jof7080606] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 07/19/2021] [Accepted: 07/22/2021] [Indexed: 12/24/2022] Open
Abstract
Aflatoxins (AFs) are highly toxic and cancer-causing compounds, predominantly synthesized by the Aspergillus species. AFs biosynthesis is a lengthy process that requires as minimum as 30 genes grouped inside 75 kilobytes (kB) of gene clusters, which are regulated by specific transcription factors, including aflR, aflS, and some general transcription factors. This paper summarizes the status of research on characterizing structural and regulatory genes associated with AF production and their roles in aflatoxigenic fungi, particularly Aspergillus flavus and A. parasiticus, and enhances the current understanding of AFs that adversely affect humans and animals with a great emphasis on toxicity and preventive methods.
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20
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Rotondo JC, Lanzillotti C, Mazziotta C, Tognon M, Martini F. Epigenetics of Male Infertility: The Role of DNA Methylation. Front Cell Dev Biol 2021; 9:689624. [PMID: 34368137 PMCID: PMC8339558 DOI: 10.3389/fcell.2021.689624] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 06/17/2021] [Indexed: 12/18/2022] Open
Abstract
In recent years, a number of studies focused on the role of epigenetics, including DNA methylation, in spermatogenesis and male infertility. We aimed to provide an overview of the knowledge concerning the gene and genome methylation and its regulation during spermatogenesis, specifically in the context of male infertility etiopathogenesis. Overall, the findings support the hypothesis that sperm DNA methylation is associated with sperm alterations and infertility. Several genes have been found to be differentially methylated in relation to impaired spermatogenesis and/or reproductive dysfunction. Particularly, DNA methylation defects of MEST and H19 within imprinted genes and MTHFR within non-imprinted genes have been repeatedly linked with male infertility. A deep knowledge of sperm DNA methylation status in association with reduced reproductive potential could improve the development of novel diagnostic tools for this disease. Further studies are needed to better elucidate the mechanisms affecting methylation in sperm and their impact on male infertility.
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Affiliation(s)
- John Charles Rotondo
- Laboratories of Cell Biology and Molecular Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Carmen Lanzillotti
- Laboratories of Cell Biology and Molecular Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Chiara Mazziotta
- Laboratories of Cell Biology and Molecular Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Mauro Tognon
- Laboratories of Cell Biology and Molecular Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Fernanda Martini
- Laboratories of Cell Biology and Molecular Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
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Khan MT, Irfan M, Ahsan H, Ali S, Malik A, Pech-Cervantes A, Cui Z, Zhang Y, Wei D. CYP1A2, 2A13, and 3A4 network and interaction with aflatoxin B 1. WORLD MYCOTOXIN J 2021. [DOI: 10.3920/wmj2020.2621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Aspergillus fungi are known to produce aflatoxins, among which aflatoxin B1 (AFB1) is the most potent carcinogen that is metabolised by cytochrome P450 (CYP450). In the liver, AFB1 is metabolised into exo-8,9-epoxide by the CYP1A2 enzymes. The resulting epoxide can react with guanine to cause DNA damage. Natural inhibitors are being identified. However, the modes of action are poorly understood. In the current study, we have investigated the mode of action of AFB1 with CYP1A2, CYP3A4 and CYP2A13 using molecular dynamic simulation (MD simulation) approaches. The interaction network and paths among CYP1A2, CYP3A4, and CYP2A13 have been investigated using the STRING database and PathLinker plugin of Cytoscape. CYP3A4 is the most active protein involved in interactions with AFB1 during its metabolism. Residues 362ARG, 445SER, 450LEU and 451PHE of CYP1A2 are important, interacting with AFB1 and converting it to toxic exo-AFB1-8,9-epoxide (AFBEX). The pathway shows that microsomal epoxide hydrolase (EPHX1) may acts as initiator in the signalling pathway where CYP1A2, CYP3A4 and CYP2A13 interact in a sequential order. The interaction network shows there to be a strong association in expression among CYP1A2, CYP3A4 and CYP2A13 along with other metabolising enzymes. The complex of AFB1 and CYP1A2 was found to be stable during the MD simulation. This study provides a better understanding of the mode of action between AFB1 and CYP1A2, CYP3A4 and CYP2A13 which relates to the effective management of AFB1 toxicity. EPHX1 in the protein network may be an ideal target when designing inhibitors to prevent the toxin’s activation. Peptide inhibitors may be designed to block the substrate site residues of CYP1A2 in order to prevent the conversion from AFB1 into AFBEX. This would either neutralise or reduce its toxicity.
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Affiliation(s)
- M. Tahir Khan
- Institute of Molecular Biology and Biotechnology (IMBB), The University of Lahore-Pakistan, 54000 Lahore, Pakistan
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, and Joint Laboratory of International Cooperation in Metabolic and Developmental Sciences, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China P.R
| | - M. Irfan
- Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, FL 32611-7011, USA
| | - H. Ahsan
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - S. Ali
- Quaid-i-Azam University Islamabad, Pakistan
- Provincial Tuberculosis Reference Lab, Hayatabad Peshawar, Pakistan
| | - A. Malik
- Institute of Molecular Biology and Biotechnology (IMBB), The University of Lahore-Pakistan, 54000 Lahore, Pakistan
| | - A.A. Pech-Cervantes
- Agricultural Research Station, Fort Valley State University, 9000 Watson Blvd, Fort Valley, GA 31030, USA
| | - Z. Cui
- Department of Respiratory Medicine, XinHua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China P.R
| | - Y.J. Zhang
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China P.R
| | - D.Q. Wei
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, and Joint Laboratory of International Cooperation in Metabolic and Developmental Sciences, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China P.R
- Peng Cheng Laboratory, Vanke Cloud City Phase I Building 8, Xili Street, Nanshan District, Shenzhen, Guangdong, 518055, China P.R
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22
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Gerez JR, Camacho T, Brunaldi Marutani VH, Nascimento de Matos RL, Hohmann MS, Verri Júnior WA, Bracarense APFRL. Ovarian toxicity by fusariotoxins in pigs: Does it imply in oxidative stress? Theriogenology 2021; 165:84-91. [PMID: 33640590 DOI: 10.1016/j.theriogenology.2021.02.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 02/03/2021] [Accepted: 02/05/2021] [Indexed: 01/16/2023]
Abstract
Mycotoxins are natural contaminants of food and feed occurring worldwide. Deoxynivalenol (DON) and fumonisin B1 (FB1) are the most frequent fusariotoxins and induce immune and intestinal toxicity in humans and animals. Recently, an association between mycotoxins exposure and impaired fertility has been suggested. However, the effects of these mycotoxins on the reproductive system are not well established. This study aimed to evaluate the effects of FB1 and DON, in combination or alone, on the ovarian morphology and oxidative responses using porcine explants. Seventy-two explants were obtained from six pigs and submitted to the following treatments: control (MEM medium), DON (10 μM), FB1 (100 μM FB1), and DON + FB1 (10 μM + 100 μM). Histological and immunohistochemical assays were performed to evaluate ovarian changes, cell proliferation, and apoptosis. Oxidative stress response was evaluated through lipid peroxidation and antioxidant capacity response assays. The exposure to mycotoxins induced significant histological changes in the ovaries, which were characterized by a decrease in viable follicles and increase in degenerated follicles. A significant decrease in granulosa cell proliferation was observed in explants exposed to all mycotoxins. In addition the multi-contaminated treatment was responsible for an increase in the cell apoptosis index of growing follicles. On the other hand, the FB1 and multi-contaminated treatments induced a significant decrease in lipid peroxidation accompanied by an increase in antioxidant responses. Altogether, our results indicate a reproductive toxicity induced by fusariotoxins. Moreover, mycotoxins, alone or in combination, modulate oxidative stress response, interfering with the production of free radicals and affecting the reproductive capacity of pigs.
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Affiliation(s)
- Juliana Rubira Gerez
- Laboratory of Animal Pathology, Universidade Estadual de Londrina, Londrina, Paraná, 86057-970, Brazil; Laboratory of Pain, Inflammation, Neuropathy and Cancer, Universidade Estadual de Londrina, Londrina, Paraná, 86057-970, Brazil.
| | - Thaynara Camacho
- Laboratory of Animal Pathology, Universidade Estadual de Londrina, Londrina, Paraná, 86057-970, Brazil.
| | | | | | - Miriam Sayuri Hohmann
- Laboratory of Pain, Inflammation, Neuropathy and Cancer, Universidade Estadual de Londrina, Londrina, Paraná, 86057-970, Brazil.
| | - Waldiceu Aparecido Verri Júnior
- Laboratory of Pain, Inflammation, Neuropathy and Cancer, Universidade Estadual de Londrina, Londrina, Paraná, 86057-970, Brazil.
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23
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DNA Methylation in Pulmonary Fibrosis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1255:51-62. [PMID: 32949389 DOI: 10.1007/978-981-15-4494-1_4] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
DNA methylations, including global methylation pattern and specific gene methylation, are associated with pathogenesis and progress of pulmonary fibrosis. This chapter illustrates alteration of DNA methylation in pulmonary fibrosis as a predictive or prognostic factor. Treatment with the DNA methylation inhibitors will be an emerging anti-fibrosis therapy, although we are still in the pre-clinical stage of using epigenetic markers as potential targets for biomarkers and therapeutic interventions.
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24
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Roth Z, Komsky-Elbaz A, Kalo D. Effect of environmental contamination on female and male gametes - A lesson from bovines. Anim Reprod 2020; 17:e20200041. [PMID: 33029217 PMCID: PMC7534576 DOI: 10.1590/1984-3143-ar2020-0041] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Endocrine-disrupting compounds (EDCs) and foodborne contaminants are environmental pollutants that are considered reproductive toxicants due to their deleterious effects on female and male gametes. Among the EDCs, the phthalate plasticizers are of growing concern. In-vivo and in-vitro models indicate that the oocyte is highly sensitive to phthalates. This review summarizes the effects of di(2-ethylhexyl) phthalate and its major metabolite mono(2-ethyhexyl) phthalate (MEHP) on the oocyte. MEHP reduces the proportion of oocytes that fertilize, cleave and develop to the blastocyst stage. This is associated with negative effects on meiotic progression, and disruption of cortical granules, endoplasmic reticulum and mitochondrial reorganization. MEHP alters mitochondrial membrane polarity, increases reactive oxygen species levels and induces alterations in genes associated with oxidative phosphorylation. A carryover effect from the oocyte to the blastocyst is manifested by alterations in the transcriptomic profile of blastocysts developed from MEHP-treated oocytes. Among foodborne contaminants, the pesticide atrazine (ATZ) and the mycotoxin aflatoxin B1 (AFB1) are of high concern. The potential hazards associated with exposure of spermatozoa to these contaminants and their carryover effect to the blastocyst are described. AFB1 and ATZ reduce spermatozoa's viability, as reflected by a high proportion of cells with damaged plasma membrane; induce acrosome reaction, expressed as damage to the acrosomal membrane; and interfere with mitochondrial function, characterized by hyperpolarization of the membrane. ATZ and AFB1-treated spermatozoa show a high proportion of cells with fragmented DNA. Exposure of spermatozoa to AFB1 and ATZ reduces fertilization and cleavage rates, but not that of blastocyst formation. However, fertilization with AFB1- or ATZ-treated spermatozoa impairs transcript expression in the formed blastocysts, implying a carryover effect. Taken together, the review indicates the risk of exposing farm animals to environmental contaminants, and their deleterious effects on female and male gametes and the developing embryo.
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Affiliation(s)
- Zvi Roth
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Alisa Komsky-Elbaz
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Dorit Kalo
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
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25
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Individual and Combined In Vitro Effects of Deoxynivalenol and Zearalenone on Boar Semen. Toxins (Basel) 2020; 12:toxins12080495. [PMID: 32752294 PMCID: PMC7472223 DOI: 10.3390/toxins12080495] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/28/2020] [Accepted: 07/30/2020] [Indexed: 01/03/2023] Open
Abstract
Mycotoxins deoxynivalenol (DON) and zearalenone (ZEN) can negatively affect pig health. However, little is known about their effects on boar semen. We assessed the individual and combined effects of DON and ZEN on boar semen in vitro. In a pretrial, we determined the minimum dose (MiD) of each mycotoxin that induces a significant alteration of sperm progressive motility, as investigated using computer-assisted semen analysis (CASA). In the main trial, the individual and combined effects of each mycotoxin’s MiD on sperm motility and kinetics (CASA analysis), morphology (SpermBlue staining), viability (calcein-propidium iodide staining), membrane functional status (hypoosmotic swelling test), and chromatin integrity (acridine orange staining) were analyzed. Pretrial results suggested a MiD of 50.6 μM and 62.8 μM for DON and ZEN, respectively. In the main trial, DON and ZEN administered at MiD significantly affected CASA parameters (e.g., increase of immotile spermatozoa, reduction of progressive motile spermatozoa), decreased sperm viability, and affected sperm morphology (head abnormalities) and membrane functional status. DON and ZEN showed less than additive effects on most parameters tested and a synergistic effect on viability and on two CASA parameters. In conclusion, DON and ZEN showed individual and combined toxic effects on boar semen in vitro.
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26
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Perego MC, Morrell BC, Zhang L, Schütz LF, Spicer LJ. Developmental and hormonal regulation of ubiquitin-like with plant homeodomain and really interesting new gene finger domains 1 gene expression in ovarian granulosa and theca cells of cattle. J Anim Sci 2020; 98:5866609. [PMID: 32614952 DOI: 10.1093/jas/skaa205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 06/25/2020] [Indexed: 12/27/2022] Open
Abstract
Ubiquitin-like with plant homeodomain and really interesting new gene finger domains 1 (UHRF1) is a multi-domain nuclear protein that plays an important role in epigenetics and tumorigenesis, but its role in normal ovarian follicle development remains unknown. Thus, the present study evaluated if UHRF1 mRNA abundance in bovine follicular cells is developmentally and hormonally regulated, and if changes in UHRF1 are associated with changes in DNA methylation in follicular cells. Abundance of UHRF1 mRNA was greater in granulosa cells (GC) and theca cells (TC) from small (<6 mm) than large (≥8 mm) follicles and was greater in small-follicle GC than TC. In GC and TC, fibroblast growth factor 9 (FGF9) treatment increased (P < 0.05) UHRF1 expression by 2-fold. Also, luteinizing hormone (LH) and insulin-like growth factor 1 (IGF1) increased (P < 0.05) UHRF1 expression in TC by 2-fold, and forskolin (an adenylate cyclase inducer) alone or combined with IGF1 increased (P < 0.05) UHRF1 expression by 3-fold. An E2F transcription factor inhibitor (E2Fi) decreased (P < 0.05) UHRF1 expression by 44% in TC and by 99% in GC. Estradiol, progesterone, and dibutyryl-cAMP decreased (P < 0.05) UHRF1 mRNA abundance in GC. Treatment of GC with follicle-stimulating hormone (FSH) alone had no effect but when combined with IGF1 enhanced the UHRF1 mRNA abundance by 2.7-fold. Beauvericin (a mycotoxin) completely inhibited the FSH plus IGF1-induced UHRF1 expression in small-follicle GC. Treatments that increased UHRF1 mRNA (i.e., FGF9) in GC tended to decrease (by 63%; P < 0.10) global DNA methylation, and those that decreased UHRF1 mRNA (i.e., E2Fi) in GC tended to increase (by 2.4-fold; P < 0.10) global DNA methylation. Collectively, these results suggest that UHRF1 expression in both GC and TC is developmentally and hormonally regulated, and that UHRF1 may play a role in follicular growth and development as well as be involved in ovarian epigenetic processes.
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Affiliation(s)
| | - Breanne C Morrell
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK
| | | | | | - Leon J Spicer
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK
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27
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Nazhand A, Durazzo A, Lucarini M, Souto EB, Santini A. Characteristics, Occurrence, Detection and Detoxification of Aflatoxins in Foods and Feeds. Foods 2020; 9:E644. [PMID: 32443392 PMCID: PMC7278662 DOI: 10.3390/foods9050644] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 05/09/2020] [Accepted: 05/12/2020] [Indexed: 12/14/2022] Open
Abstract
Mycotoxin contamination continues to be a food safety concern globally, with the most toxic being aflatoxins. On-farm aflatoxins, during food transit or storage, directly or indirectly result in the contamination of foods, which affects the liver, immune system and reproduction after infiltration into human beings and animals. There are numerous reports on aflatoxins focusing on achieving appropriate methods for quantification, precise detection and control in order to ensure consumer safety. In 2012, the International Agency for Research on Cancer (IARC) classified aflatoxins B1, B2, G1, G2, M1 and M2 as group 1 carcinogenic substances, which are a global human health concern. Consequently, this review article addresses aflatoxin chemical properties and biosynthetic processes; aflatoxin contamination in foods and feeds; health effects in human beings and animals due to aflatoxin exposure, as well as aflatoxin detection and detoxification methods.
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Affiliation(s)
- Amirhossein Nazhand
- Department of Biotechnology, Sari Agricultural Science and Natural Resource University, 9th km of Farah Abad Road, Mazandaran 48181-68984, Iran;
| | - Alessandra Durazzo
- CREA-Research Centre for Food and Nutrition, Via Ardeatina 546, 00178 Roma, Italy; (A.D.); (M.L.)
| | - Massimo Lucarini
- CREA-Research Centre for Food and Nutrition, Via Ardeatina 546, 00178 Roma, Italy; (A.D.); (M.L.)
| | - Eliana B. Souto
- Faculty of Pharmacy of University of Coimbra, Azinhaga de Santa Comba, Polo III-Saúde, 3000-548 Coimbra, Portugal;
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Antonello Santini
- Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy
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28
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Food Consumption Data as a Tool to Estimate Exposure to Mycoestrogens. Toxins (Basel) 2020; 12:toxins12020118. [PMID: 32070037 PMCID: PMC7076783 DOI: 10.3390/toxins12020118] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 02/05/2020] [Accepted: 02/07/2020] [Indexed: 12/13/2022] Open
Abstract
Zearalenone and alternariol are mycotoxins produced by Fusarium and Alternaria species, respectively, that present estrogenic activity and consequently are classified as endocrine disruptors. To estimate the exposure of the Portuguese population to these two mycotoxins at a national level, a modelling approach, based on data from 94 Portuguese volunteers, was developed considering as inputs: i) the food consumption data generated within the National Food and Physical Activity Survey; and ii) the human biomonitoring data used to assess the exposure to the referred mycotoxins. Six models of association between mycoestrogens urinary levels (zearalenone, total zearalenone and alternariol) and food items (meat, cheese, and fresh-cheese, breakfast cereals, sweets) were established. Applying the obtained models to the consumption data (n = 5811) of the general population, the median estimates of the probable daily intake revealed that a fraction of the Portuguese population might exceed the tolerable daily intake defined for zearalenone. A reference intake value for alternariol is still lacking, thus the characterization of risk due to the exposure to this mycotoxin was not possible to perform. Although the unavoidable uncertainties, these results are important contributions to understand the exposure to endocrine disruptors in Portugal and the potential Public Health consequences.
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29
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Ráduly Z, Szabó L, Madar A, Pócsi I, Csernoch L. Toxicological and Medical Aspects of Aspergillus-Derived Mycotoxins Entering the Feed and Food Chain. Front Microbiol 2020; 10:2908. [PMID: 31998250 PMCID: PMC6962185 DOI: 10.3389/fmicb.2019.02908] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 12/03/2019] [Indexed: 12/13/2022] Open
Abstract
Due to Earth's changing climate, the ongoing and foreseeable spreading of mycotoxigenic Aspergillus species has increased the possibility of mycotoxin contamination in the feed and food production chain. These harmful mycotoxins have aroused serious health and economic problems since their first appearance. The most potent Aspergillus-derived mycotoxins include aflatoxins, ochratoxins, gliotoxin, fumonisins, sterigmatocystin, and patulin. Some of them can be found in dairy products, mainly in milk and cheese, as well as in fresh and especially in dried fruits and vegetables, in nut products, typically in groundnuts, in oil seeds, in coffee beans, in different grain products, like rice, wheat, barley, rye, and frequently in maize and, furthermore, even in the liver of livestock fed by mycotoxin-contaminated forage. Though the mycotoxins present in the feed and food chain are well documented, the human physiological effects of mycotoxin exposure are not yet fully understood. It is known that mycotoxins have nephrotoxic, genotoxic, teratogenic, carcinogenic, and cytotoxic properties and, as a consequence, these toxins may cause liver carcinomas, renal dysfunctions, and also immunosuppressed states. The deleterious physiological effects of mycotoxins on humans are still a first-priority question. In food production and also in the case of acute and chronic poisoning, there are possibilities to set suitable food safety measures into operation to minimize the effects of mycotoxin contaminations. On the other hand, preventive actions are always better, due to the multivariate nature of mycotoxin exposures. In this review, the occurrence and toxicological features of major Aspergillus-derived mycotoxins are summarized and, furthermore, the possibilities of treatments in the medical practice to heal the deleterious consequences of acute and/or chronic exposures are presented.
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Affiliation(s)
- Zsolt Ráduly
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- Doctoral School of Molecular Medicine, University of Debrecen, Debrecen, Hungary
| | - László Szabó
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- Doctoral School of Molecular Medicine, University of Debrecen, Debrecen, Hungary
| | - Anett Madar
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - István Pócsi
- Department of Molecular Biotechnology and Microbiology, Faculty of Science and Technology, Institute of Biotechnology, University of Debrecen, Debrecen, Hungary
| | - László Csernoch
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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30
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Benkerroum N. Chronic and Acute Toxicities of Aflatoxins: Mechanisms of Action. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E423. [PMID: 31936320 PMCID: PMC7013914 DOI: 10.3390/ijerph17020423] [Citation(s) in RCA: 173] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 12/23/2019] [Accepted: 12/29/2019] [Indexed: 01/01/2023]
Abstract
There are presently more than 18 known aflatoxins most of which have been insufficiently studied for their incidence, health-risk, and mechanisms of toxicity to allow effective intervention and control means that would significantly and sustainably reduce their incidence and adverse effects on health and economy. Among these, aflatoxin B1 (AFB1) has been by far the most studied; yet, many aspects of the range and mechanisms of the diseases it causes remain to be elucidated. Its mutagenicity, tumorigenicity, and carcinogenicity-which are the best known-still suffer from limitations regarding the relative contribution of the oxidative stress and the reactive epoxide derivative (Aflatoxin-exo 8,9-epoxide) in the induction of the diseases, as well as its metabolic and synthesis pathways. Additionally, despite the well-established additive effects for carcinogenicity between AFB1 and other risk factors, e.g., hepatitis viruses B and C, and the hepatotoxic algal microcystins, the mechanisms of this synergy remain unclear. This study reviews the most recent advances in the field of the mechanisms of toxicity of aflatoxins and the adverse health effects that they cause in humans and animals.
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Affiliation(s)
- Noreddine Benkerroum
- Department of Food Science and Agricultural Chemistry MacDonald Campus, McGill University, 21111 Lakeshore, Ste Anne de Bellevue, QC H9X 3V9, Canada
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