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Zhang Y, Guan Y, Dai M, Yang Y, Yang F. Microcystin-LR induces lung injury in mice through the NF-κB/NLRP3 pathway. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2025; 88:385-394. [PMID: 39773316 DOI: 10.1080/15287394.2024.2443525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2025]
Abstract
Microcystin-LR (MC-LR) a cyclic toxin produced by cyanobacterial species is known to exert detrimental effects on various organs, including lung. Several investigators demonstrated that MC-LR exerts pulmonary toxicity, but the underlying mechanisms remain unclear. This study aimed to investigate whether exposure to MC-LR-induced lung inflammation and examine the underlying mechanisms. Thirty specific pathogen-free (SPF) male mice were allocated into control and MC-LR treatment groups. Mice were intraperitoneally injected with physiological saline or MC-LR (20 μg/kg) daily for a total of 21 days. Our findings indicated that exposure to MC-LR-produced histopathological changes in lung tissue, including thickening of alveolar walls and inflammatory infiltration. MC-LR was found to upregulate mRNA expression levels of pro-inflammatory cytokines TNFα, IL-6, IL-1β, and IL-18. Further, MC-LR significantly elevated the expression levels of proteins associated with the NF-κB/NLRP3 pathway p-NF-κB, NLRP3, Caspase-1, ASC. The activation of NF-κB/NLRP3 pathway further promoted the release of inflammatory cytokine IL-1β and cleavage of pyroptosis-associated GSDMD protein. These findings indicate that MC-LR may induce lung inflammation by promoting cell pyroptosis via the activation of the NF-κB/NLRP3 pathway.
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Affiliation(s)
- Yin Zhang
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Ying Guan
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Manni Dai
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Yue Yang
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, Hunan, China
- The First Affiliated Hospital of University of South China, Hengyang Medical School, University of South China, Hengyang, Hunan, China
- The Department of Public Health, The Central Hospital of Shaoyang, Shaoyang, China
| | - Fei Yang
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, Hunan, China
- Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan, China
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Kuzikova I, Zaytseva T, Chernova E, Povolotckaia A, Pankin D, Sazanova A, Medvedeva N. Impact of algicidal fungus Aspergillus welwitschiae GF6 on harmful bloom-forming cyanobacterium Microcystis aeruginosa: Growth and physiological responses. CHEMOSPHERE 2025; 372:144090. [PMID: 39793903 DOI: 10.1016/j.chemosphere.2025.144090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Revised: 12/11/2024] [Accepted: 01/06/2025] [Indexed: 01/13/2025]
Abstract
Harmful cyanobacterial blooms (HCBs) have become a common issue in freshwater worldwide. Biological methods for controlling HCBs are relatively cost effective and environmentally friendly. The strain of ascomycete GF6 was isolated from a water sample collected from the estuarine zone of the eastern part of the Gulf of Finland. Based on cultural and morphological features and data of phylogenetic analysis, the strain was identified as Aspergillus welwitschiae GF6. The isolated GF6 strain has algicidal activity against both cyanobacteria and green algae. The highest sensitivity to the algicidal action of strain GF6 was found in cyanobacteria (98.5-100%). The algicidal effect on green algae did not exceed 63-70%. It was shown that GF6 strain exhibited an indirect attack mode by releasing metabolites that inhibit and/or degrade algal cells. In this study, significantly increased malondialdehyde content in Microcystis aeruginosa cells indicated that GF6 strain caused oxidative damage to the algal cell membrane. Enhanced production of phytosynthetic pigments, increase in lifetime chlorophyll a fluorescence and in the levels of antioxidants were noted in Microcystis aeruginosa cells. Besides this, GF6 strain could reduce the microcystins content in the medium under inhibiting the growth of M. aeruginosa. Apart from the growth inhibition and cell degradation of M. aeruginosa, GF6 strain is able to remove microcystin-LR (MC-LR). The content of MC-LR at an initial concentration of 0.51 μg/mL decreased by 61% after 72 h of A.welwitschiae GF6 strain cultivation. In the process of MC-LR biodestruction, transformation products were identified - the conjugate of microcystin with glutathione and the linearized form of MC-LR. The isolated strain with algicidal activity and the ability to degrade microcystin is of interest for further research in order to be able to use it for convergent technology to prevent the mass development of cyanobacteria and detoxification of cyanotoxins in water bodies.
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Affiliation(s)
- Irina Kuzikova
- St. Petersburg Federal Research Center of the Russian Academy of Sciences (SPC RAS), Scientific Research Centre for Ecological Safety of the Russian Academy of Sciences, 18, Korpusnaya st., St. Petersburg, 197110, Russia.
| | - Tatyana Zaytseva
- St. Petersburg Federal Research Center of the Russian Academy of Sciences (SPC RAS), Scientific Research Centre for Ecological Safety of the Russian Academy of Sciences, 18, Korpusnaya st., St. Petersburg, 197110, Russia
| | - Ekaterina Chernova
- St. Petersburg Federal Research Center of the Russian Academy of Sciences (SPC RAS), Scientific Research Centre for Ecological Safety of the Russian Academy of Sciences, 18, Korpusnaya st., St. Petersburg, 197110, Russia
| | - Anastasia Povolotckaia
- Saint-Petersburg State University, Universitetskaya nab. 7/9, Saint-Petersburg, 199034, Russia
| | - Dmitrii Pankin
- Saint-Petersburg State University, Universitetskaya nab. 7/9, Saint-Petersburg, 199034, Russia
| | - Anna Sazanova
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), Sh. Podbelskogo 3, Saint-Petersburg, 196608, Russia
| | - Nadezda Medvedeva
- St. Petersburg Federal Research Center of the Russian Academy of Sciences (SPC RAS), Scientific Research Centre for Ecological Safety of the Russian Academy of Sciences, 18, Korpusnaya st., St. Petersburg, 197110, Russia
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Fu G, Wu Q, Dai J, Lu S, Zhou T, Yang Z, Shi Y. piRNA array analysis provide insight into the mechanism of DEHP-induced testicular toxicology in pubertal male rats. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 287:117282. [PMID: 39504879 DOI: 10.1016/j.ecoenv.2024.117282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2024] [Revised: 10/23/2024] [Accepted: 10/30/2024] [Indexed: 11/08/2024]
Abstract
Di-(2-ethylhexyl) phthalate (DEHP), a widely used plasticizer, could cause male reproductive toxicity by disrupting spermatogenesis. Piwi-interacting RNAs (piRNAs) are a small non-coding RNAs specifically highly expressed in the germline and interact with PIWI proteins to regulate spermatogenesis. Accumulating studies have confirmed that environmental poisons could induce male reproductive injury via altering piRNA expression. However, it remains unclear whether DEHP causes male reproductive dysfunction by perturbing piRNA expression levels. In this study, we conducted piRNA microarray expression analyses on testes of DEHP-exposed and control male rats and performed some in vitro and in vivo studies to explore the role of piRNA on DEHP-induced male reproductive toxicity. Our results showed that DEHP exposure leaded to changed expression profiles of piRNAs in pubertal male rat testes. And bioinformatics analyses revealed that down-regulated piR-rno-26751 probably targeted Insr mRNA expression regulation. Results from gene and protein expression tests demonstrated that DEHP caused decreased expression level of INSR mainly in spermatogonia. Moreover, MEHP, the main metabolite of DEHP resulted in cell apoptosis and down-regulation of INSR and its downstream p-IRS1, p-PI3K, p-AKT and p-FOXO1 in GC-1spg cells. Conversely, overexpression of INSR restored cell apoptosis and the down-regulation of the above proteins in GC-1spg cells. In conclusion, these findings suggest that DEHP-induced down-regulation of piR-rno-26751 targets the suppression of INSR, leading to apoptosis of spermatogonia in pubertal male rats.
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Affiliation(s)
- Guoqing Fu
- College of Medicine and Health Sciences, China Three Gorges University,Yichang, Hubei 443002, China; Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Qinru Wu
- College of Basic Medical Sciences, China Three Gorges University, Yichang, Hubei 443002, China
| | - Juan Dai
- Wuhan Center for Disease Control and Prevention, Wuhan, Hubei 430024, China
| | - Siqi Lu
- College of Medicine and Health Sciences, China Three Gorges University,Yichang, Hubei 443002, China
| | - Ting Zhou
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan 430065, China; School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Zhongcheng Yang
- Yichang Center for Disease Control and Prevention, Yichang, Hubei, 443000, China.
| | - Yuqin Shi
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan 430065, China; School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China.
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Kuzikova I, Zaytseva T, Chernova E, Sazanova A, Sharov A, Medvedeva N. Algicidal Activity and Microcystin-LR Destruction by a Novel Strain Penicillium sp. GF3 Isolated from the Gulf of Finland (Baltic Sea). Toxins (Basel) 2023; 15:607. [PMID: 37888639 PMCID: PMC10611005 DOI: 10.3390/toxins15100607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/06/2023] [Accepted: 10/06/2023] [Indexed: 10/28/2023] Open
Abstract
The present article focuses on a strain of ascomycete GF3 isolated from a water sample taken in the Gulf of Finland. Based on phylogenetic analysis data, the isolate was identified as Penicillium sp. GF3. The fungus GF3 demonstrates algicidal activity towards cyanobacteria (98-100%). The algicidal effect on green algae did not exceed 50%. The isolate GF3 exhibits an indirect attack mode by releasing metabolites with algicidal and/or lytic activity into the environment. Moreover, the strain Penicillium sp. GF3 is able to degrade MC-LR. After 72 h of GF3 cultivation, the MC-LR content was reduced by 34.1% and 26.7% at initial 0.1 μg/mL and 0.45 μg/mL concentrations, respectively. The high stress resistance of the GF3 to toxic MC-LR is provided by a 1.5-fold activation of catalase activity and a change in the reduced glutathione content. Additionally, during the MC-LR biotransformation, a MC-LR-GSH conjugate and linearized MC-LR were identified. The linearized MC-LR in the presence of fungi capable of degrading MCs was revealed for the first time. Using Daphnia magna as a bioindicator, it was shown that the MC-LR biotransformation led to the formation of less toxic intermediates. The toxicity of the fungal filtrate is reduced by five times compared to the abiotic control. Our findings enhance the understanding of the role that ascomycete fungi have as potential bioagents for cyanoHABs to control and detoxify water bodies.
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Affiliation(s)
- Irina Kuzikova
- Scientific Research Centre for Ecological Safety, St. Petersburg Federal Research Center, Russian Academy of Sciences, St. Petersburg 197110, Russia; (T.Z.); (E.C.); (A.S.); (N.M.)
| | - Tatyana Zaytseva
- Scientific Research Centre for Ecological Safety, St. Petersburg Federal Research Center, Russian Academy of Sciences, St. Petersburg 197110, Russia; (T.Z.); (E.C.); (A.S.); (N.M.)
| | - Ekaterina Chernova
- Scientific Research Centre for Ecological Safety, St. Petersburg Federal Research Center, Russian Academy of Sciences, St. Petersburg 197110, Russia; (T.Z.); (E.C.); (A.S.); (N.M.)
| | - Anna Sazanova
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg 196608, Russia;
| | - Andrey Sharov
- Scientific Research Centre for Ecological Safety, St. Petersburg Federal Research Center, Russian Academy of Sciences, St. Petersburg 197110, Russia; (T.Z.); (E.C.); (A.S.); (N.M.)
- Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, Borok 152742, Russia
| | - Nadezda Medvedeva
- Scientific Research Centre for Ecological Safety, St. Petersburg Federal Research Center, Russian Academy of Sciences, St. Petersburg 197110, Russia; (T.Z.); (E.C.); (A.S.); (N.M.)
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5
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Meng X, Li W, Wu Q, Gao Y, Zhang L. Microcystin-LR induces lactate production disruption via altering the m 6A modification in Sertoli cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 263:115288. [PMID: 37481861 DOI: 10.1016/j.ecoenv.2023.115288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 07/15/2023] [Accepted: 07/19/2023] [Indexed: 07/25/2023]
Abstract
We have previously reported the toxicity of microcystin-LR (MC-LR) to the male reproductive system, which results in functional changes in mouse testes. In this study, mice were orally exposed to MC-LR at 1, 7.5, 15, or 30 μg/L daily for 180 days. We found an increase in germ cell apoptosis in the seminiferous tubules and low-quality sperm in the epididymis. A decrease in lactate dehydrogenase A (Ldha) expression in testes through high-throughput sequencing was observed. We validated that MC-LR disrupted lactate production in Sertoli cells by suppressing the expression of Ldha. Further studies identified that methyltransferase 3 (Mettl3) catalysed N6-methyladenosine (m6A) methylation of Ldha mRNA. Mettl3 was downregulated in Sertoli cells following exposure to MC-LR, decreasing m6A levels of Ldha. The stability of Ldha mRNA decreased when m6A levels of Ldha were inhibited. In conclusion, these results showed that MC-LR inhibits the expression of Ldha in an m6A-dependent manner, which might result in the apoptosis of spermatogenic cells and a decline in sperm quality. Our work provides a new perspective to understanding MC-LR-induced male infertility.
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Affiliation(s)
- Xiannan Meng
- Cancer Institute, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Wenju Li
- Department of Tropical Medicine and Infectious Diseases, Hainan Hospital, The Chinese PLA General Hospital, Sanya, Hainan, China
| | - Qingxuan Wu
- Cancer Institute, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Yue Gao
- Cancer Institute, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Ling Zhang
- Cancer Institute, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China; Department of Histology and Embryology, Basic Medical College, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China.
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6
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Zhang Z, Du X, Zhang S, Liu H, Fu Y, Wang F, Zhang H. Adverse effects of microcystins on sperm: A systematic review. Toxicology 2023; 490:153507. [PMID: 37030550 DOI: 10.1016/j.tox.2023.153507] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/03/2023] [Accepted: 04/05/2023] [Indexed: 04/08/2023]
Abstract
Eutrophication of water bodies can lead to cyanobacterial blooms, with the resultant release of microcystins (MCs), posing a threat to the ecosystem and human health. MCs are environmental toxins with male reproductive toxicity. However, there is a dearth of reviews focusing on sperm or spermatogenesis. In this paper, studies on sperm toxicity caused by MCs in recent 20 years were collected and summarized, aiming at revealing the toxic effects and potential mechanisms of MCs on sperm. Based on the previous findings, MCs can decline sperm quality and count, and cause malformation in vertebrates and invertebrates. The reason might be that MCs cause indirect damage to sperm through impairing the structure and function of the testis. The mechanisms of MCs-induced sperm toxicity mainly result from alterations in genetic material, abnormalities in the structure and function of sperm. The epigenetic modifications such as miRNA and piRNA were also involved in MC-LR-induced sperm damage. In conclusion, MCs exposure is harmful to sperm, but its direct effects and mechanisms on sperm are still not known, which remains a significant research direction. Our review will provide a basis for the protection of male reproductive health damage caused by microcystins.
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Affiliation(s)
- Zongxin Zhang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Xingde Du
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Shiyu Zhang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Haohao Liu
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Yu Fu
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Fufang Wang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Huizhen Zhang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China.
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7
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Si W, Zhao M, Che H, Wu Z, Xiao Y, Xie X, Duan J, Shen T, Xu D, Zhao S. Microcystin-LR induced transgenerational effects of thyroid disruption in zebrafish offspring by endoplasmic reticulum stress-mediated thyroglobulin accumulation and apoptosis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 322:121117. [PMID: 36690294 DOI: 10.1016/j.envpol.2023.121117] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/09/2023] [Accepted: 01/17/2023] [Indexed: 06/17/2023]
Abstract
MC-LR can interfere with thyroid function in fish, but the underlying mechanism is still unclear. Current study focuses to study the intergenerational inheritance of MC-LR-induced thyroid toxicity in zebrafish and in rat thyroid cells. In vivo experiments, adult female zebrafish (F0) were exposed to MC-LR (0, 5, and 25 μg/L) for 90 days and mated with male zebrafish without MC-LR exposure to generate F1 generation. F1 embryos were allowed to develop normally to 7 days post-fertilization (dpf) in clear water. In the F0 generation, MC-LR induced disturbance of the hypothalamic-pituitary-thyroid (HPT) axis, leading to a decrease in the production of thyroid hormones. Maternal MC-LR exposure also induced growth inhibition by altering thyroid hormones (THs) homeostasis and interfering with thyroid metabolism and development in F1 offspring. Mechanistically, MC-LR caused excessive accumulation of ROS and induced ER stress that further lead to activation of UPR in the F0 and F1 offspring of zebrafish. Interestingly, our findings suggested that MC-LR exposure hampered thyroglobulin turnover by triggering IRE1 and PERK pathway in zebrafish and FRTL-5 thyroid cells, thus disturbing the thyroid endocrine system and contributing to the thyroid toxicity from maternal to its F1 offspring of zebrafish. Particularly, inhibition of the IRE1 pathway by siRNA could alleviate thyroid development injury induced by MC-LR in FRTL-5 cells. In addition, MC-LR induced thyroid cell apoptosis by triggering ER stress. Taken together, our results demonstrated that maternal MC-LR exposure causes thyroid endocrine disruption by ER stress contributing to transgenerational effects in zebrafish offspring.
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Affiliation(s)
- Weirong Si
- School of Public Health, Anhui Medical University, Hefei, 230032, China
| | - Mengjie Zhao
- School of Public Health, Anhui Medical University, Hefei, 230032, China
| | - Huimin Che
- School of Public Health, Anhui Medical University, Hefei, 230032, China
| | - Zaiwei Wu
- School of Public Health, Anhui Medical University, Hefei, 230032, China
| | - Yuchun Xiao
- School of Public Health, Anhui Medical University, Hefei, 230032, China
| | - Xinxin Xie
- School of Public Health, Anhui Medical University, Hefei, 230032, China
| | - Jiayao Duan
- School of Public Health, Anhui Medical University, Hefei, 230032, China
| | - Tong Shen
- School of Public Health, Anhui Medical University, Hefei, 230032, China
| | - Dexiang Xu
- School of Public Health, Anhui Medical University, Hefei, 230032, China
| | - Sujuan Zhao
- School of Public Health, Anhui Medical University, Hefei, 230032, China.
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Mielewczyk DA, Glover CN, Klaczek CE, Goss GG, Saari GN. Sub-chronic exposure to waterborne extracellular microcystin-LR impairs calcium homeostasis in rainbow trout. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 251:114542. [PMID: 36638564 DOI: 10.1016/j.ecoenv.2023.114542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 12/27/2022] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
Fish mortality is associated with harmful algal blooms, although whether toxicity is related directly to the presence of cyanotoxins or the prevailing water chemistry remains unclear. Similarly, while planktivorous fish may be exposed to toxin through the diet, the hazard posed by waterborne extracellular toxin to carnivorous fish is less well understood. In this study rainbow trout (Oncorhynchus mykiss) were exposed for up to 28 d to waterborne microcystin-LR at nominal concentrations of 1.5 and 50 µg L-1 (measured values 2 and 49 µg L-1, respectively). The former represents the Canadian drinking water guideline, and the latter an elevated environmental level. This study hypothesised that waterborne toxin exposure would specifically impact gill function, and given the importance of this tissue in freshwater fish ion regulation, effects on plasma ions and branchial ion transporter activity would be observed. Microcystin-LR exposure resulted in a significant and persistent hypocalcaemia at the higher exposure concentration, but plasma sodium and branchial activities of the sodium/potassium ATPase, proton ATPase and calcium ATPase enzymes remained unaffected. An in vitro assessment failed to show any effect of microcystin-LR on branchial calcium ATPase activity even at exposure concentrations as high as 1000 µg L-1. A transient increase in hepatic alkaline phosphatase activity was also observed at 49 µg L-1, but there were no effects of toxin exposure on branchial or hepatic lactate dehydrogenase activity. These results suggest that microcystin-LR exposure does not have a general effect on ion regulation, but instead produces a novel and specific impact on calcium metabolism in rainbow trout, although the mechanism underlying this effect remains unknown.
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Affiliation(s)
- Diane A Mielewczyk
- Faculty of Science and Technology and Athabasca River Basin Research Institute, Athabasca University, Athabasca, Alberta, Canada; Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Chris N Glover
- Faculty of Science and Technology and Athabasca River Basin Research Institute, Athabasca University, Athabasca, Alberta, Canada; Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada.
| | - Chantelle E Klaczek
- Faculty of Science and Technology and Athabasca River Basin Research Institute, Athabasca University, Athabasca, Alberta, Canada; Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Greg G Goss
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Gavin N Saari
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
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9
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Xu J, Zhang W, Zhong S, Xie X, Che H, Si W, Tuo X, Xu D, Zhao S. Microcystin-leucine-arginine affects brain gene expression programs and behaviors of offspring through paternal epigenetic information. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 857:159032. [PMID: 36167133 DOI: 10.1016/j.scitotenv.2022.159032] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 09/01/2022] [Accepted: 09/21/2022] [Indexed: 06/16/2023]
Abstract
Microcystin-leucine-arginine (MC-LR) adversely affects male reproduction and interferes with the development of the offspring. Here, we establish a zebrafish (Danio rerio) model to understand the cross-generational effects of MC-LR in a male-lineage transmission pattern. F0 embryos were reared in water containing MC-LR (0, 5, and 25 μg/L) for 90 days and the developmental indices of F1 and F2 embryos were then measured with no MC-LR treatment. The results show that paternal MC-LR exposure reduced the hatching rate, heart rate and body weight in F1 and F2 generations. Global DNA methylation significantly increased in sperm and testes with the elevation expressions of DNA methyltransferases. Meanwhile, DNA methylation of brain-derived neurotrophic factor (bdnf) promoter was increased in sperm after paternal MC-LR exposure. Subsequently, increased DNA methylation of bdnf promoter and decreased gene expression of bdnf in the brain of F1 male zebrafish were detected. F1 offspring born to F0 males exhibit the depression of BDNF/AKT/CREB pathway and recapitulate these paternal neurodevelopment phenotypes in F2 offspring. In addition, the DNA methylations of dio3b and gad1b promoters were decreased and gene expressions of gad1b and dio3b were increased, accompanied with neurotransmitter disturbances in the brain of F1 male zebrafish after paternal MC-LR exposure. These data revealed that MC-LR displays a potential epigenetic impact on the germ line, reprogramming the epigenetic and transcriptional regulation of brain development, and contributing to aberrant expression of neurodevelopment-related genes and behavior disorders.
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Affiliation(s)
- Jiayi Xu
- School of Public Health, Anhui Medical University, Hefei 230032, China
| | - Weiyun Zhang
- School of Public Health, Anhui Medical University, Hefei 230032, China
| | - Shengzheng Zhong
- School of Public Health, Anhui Medical University, Hefei 230032, China
| | - Xinxin Xie
- School of Public Health, Anhui Medical University, Hefei 230032, China
| | - Huimin Che
- School of Public Health, Anhui Medical University, Hefei 230032, China
| | - Weirong Si
- School of Public Health, Anhui Medical University, Hefei 230032, China
| | - Xun Tuo
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Dexiang Xu
- School of Public Health, Anhui Medical University, Hefei 230032, China
| | - Sujuan Zhao
- School of Public Health, Anhui Medical University, Hefei 230032, China.
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10
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Gu S, Jiang M, Zhang B. Microcystin-LR in Primary Liver Cancers: An Overview. Toxins (Basel) 2022; 14:toxins14100715. [PMID: 36287983 PMCID: PMC9611980 DOI: 10.3390/toxins14100715] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 09/29/2022] [Accepted: 10/17/2022] [Indexed: 12/01/2022] Open
Abstract
The cyanobacterial blooms produced by eutrophic water bodies have become a serious environmental issue around the world. After cellular lysing or algaecide treatment, microcystins (MCs), which are regarded as the most frequently encountered cyanobacterial toxins in fresh water, are released into water. Among all the variants of MCs, MC-LR has been widely studied due to its severe hepatotoxicity. Since 1992, various studies have identified the important roles of MC-LR in the origin and progression of primary liver cancers (PLCs), although few reviews have focused on it. Therefore, this review aims to summarize the major achievements and shortcomings observed in the past few years. Based on the available literature, the mechanisms of how MC-LR induces or promotes PLCs are elucidated in this review. This review aims to enhance our understanding of the role that MC-LR plays in PLCs and provides a rational approach for future applications.
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Affiliation(s)
- Shen Gu
- Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou 310006, China
- Translational Medicine Research Center, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou 310006, China
- Correspondence: ; Tel.: +86-0571-56007664
| | - Mingxuemei Jiang
- Institute of Scientific and Technical Information of Zhejiang Province, Hangzhou 310001, China
| | - Bo Zhang
- Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou 310006, China
- Translational Medicine Research Center, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou 310006, China
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11
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Svirčev Z, Chen L, Sántha K, Drobac Backović D, Šušak S, Vulin A, Palanački Malešević T, Codd GA, Meriluoto J. A review and assessment of cyanobacterial toxins as cardiovascular health hazards. Arch Toxicol 2022; 96:2829-2863. [PMID: 35997789 PMCID: PMC9395816 DOI: 10.1007/s00204-022-03354-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 08/02/2022] [Indexed: 12/14/2022]
Abstract
Eutrophicated waters frequently support bloom-forming cyanobacteria, many of which produce potent cyanobacterial toxins (cyanotoxins). Cyanotoxins can cause adverse health effects in a wide range of organisms where the toxins may target the liver, other internal organs, mucous surfaces and the skin and nervous system. This review surveyed more than 100 studies concerning the cardiovascular toxicity of cyanotoxins and related topics. Over 60 studies have described various negative effects on the cardiovascular system by seven major types of cyanotoxins, i.e. the microcystin (MC), nodularin (NOD), cylindrospermopsin (CYN), anatoxin (ATX), guanitoxin (GNTX), saxitoxin (STX) and lyngbyatoxin (LTX) groups. Much of the research was done on rodents and fish using high, acutely toxin concentrations and unnatural exposure routes (such as intraperitoneal injection), and it is thus concluded that the emphasis in future studies should be on oral, chronic exposure of mammalian species at environmentally relevant concentrations. It is also suggested that future in vivo studies are conducted in parallel with studies on cells and tissues. In the light of the presented evidence, it is likely that cyanotoxins do not constitute a major risk to cardiovascular health under ordinary conditions met in everyday life. The risk of illnesses in other organs, in particular the liver, is higher under the same exposure conditions. However, adverse cardiovascular effects can be expected due to indirect effects arising from damage in other organs. In addition to risks related to extraordinary concentrations of the cyanotoxins and atypical exposure routes, chronic exposure together with co-existing diseases could make some of the cyanotoxins more dangerous to cardiovascular health.
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Affiliation(s)
- Zorica Svirčev
- University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, UNS, Trg Dositeja Obradovića 2, 21000, Novi Sad, Serbia.
- Biochemistry, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6A, 20520, Turku, Finland.
| | - Liang Chen
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650500, China
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology (IHB), Chinese Academy of Sciences (CAS), Wuhan, 430072, China
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Faculty of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an, 710048, China
| | - Kinga Sántha
- University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, UNS, Trg Dositeja Obradovića 2, 21000, Novi Sad, Serbia
| | - Damjana Drobac Backović
- University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, UNS, Trg Dositeja Obradovića 2, 21000, Novi Sad, Serbia
| | - Stamenko Šušak
- University of Novi Sad, Faculty of Medicine, UNS, Hajduk Veljkova 3, 21000, Novi Sad, Serbia
- Institute of Cardiovascular Diseases of Vojvodina, Sremska Kamenica, Serbia
| | - Aleksandra Vulin
- University of Novi Sad, Faculty of Medicine, UNS, Hajduk Veljkova 3, 21000, Novi Sad, Serbia
- Institute of Cardiovascular Diseases of Vojvodina, Sremska Kamenica, Serbia
| | - Tamara Palanački Malešević
- University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, UNS, Trg Dositeja Obradovića 2, 21000, Novi Sad, Serbia
| | - Geoffrey A Codd
- School of Natural Sciences, University of Stirling, Stirling, FK9 4LA, UK
- School of Life Sciences, University of Dundee, Dundee, DD1 5EH, UK
| | - Jussi Meriluoto
- University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, UNS, Trg Dositeja Obradovića 2, 21000, Novi Sad, Serbia
- Biochemistry, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6A, 20520, Turku, Finland
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12
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Liu S, He B, Li H. Water Blooms-A Potential Threat to Male Reproduction: Clues From Aquatics and Rodents. Front Endocrinol (Lausanne) 2022; 13:877292. [PMID: 35692412 PMCID: PMC9174978 DOI: 10.3389/fendo.2022.877292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 03/25/2022] [Indexed: 11/13/2022] Open
Abstract
Toxic cyanobacteria blooms are a potential threat to global aquatic ecosystems and human health. Microcystin-leucine-arginine (MC-LR) is the most toxic variant of microcystins (MCs), and exposure to MCs can damage the male reproductive system. Two electronic databases were searched for controlled studies of rodents and fishes published before September 2020. Effect sizes were calculated for eight main reproductive parameters, including sperm count, sperm motility, sperm morphology, serum testosterone, testis weight, serum follicle stimulating hormone (FSH), serum luteinising hormone (LH) and serum estradiol. Nine meta-analyses of individual parameters were conducted using R version 4.0.2. Fifteen studies were included in the meta-analysis. In the studies of rodents, exposure to MC-LR by intraperitoneal injection or intragastric administration yielded statistically significant effects on sperm count (standardised mean difference (SMD) = -1.7426 (95% CI: -2.2098 to -1.2754)), abnormal sperm rate (SMD = 1.6714 (95% CI: 0.9702 to 2.3726)), sper5% CI: -3.9811 to -1.7834)), testis weight (SMD = -2.8822 (95% CI: -3.9811 to -1.7834)) and serum FSH (SMD = 0.4707 (95% CI: 0.0659 to 0.8756) changes in serum testosterone (SMD = 0.5521 (95% CI: 0.1652; 0.9391)) and estradiol (SMD = 0.6398 (95% CI: 0.1896 to 1.0900)) concentrations are considered to be statistically significant. Dose-response analysis reflected the dynamic changes of male reproductive function caused by MC. Short-term exposure to MC-LR can affect the function of the male reproductive system in rodents and fish. Elevated dosage or extended exposure time may worsen the damage. Human-related research on MC-LR exposure is very necessary to protect health and the water environment.
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Affiliation(s)
| | | | - Hua Li
- Department of Emergency Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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13
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López-Cervantes JP, Lønnebotn M, Jogi NO, Calciano L, Kuiper IN, Darby MG, Dharmage SC, Gómez-Real F, Hammer B, Bertelsen RJ, Johannessen A, Würtz AML, Mørkve Knudsen T, Koplin J, Pape K, Skulstad SM, Timm S, Tjalvin G, Krauss-Etschmann S, Accordini S, Schlünssen V, Kirkeleit J, Svanes C. The Exposome Approach in Allergies and Lung Diseases: Is It Time to Define a Preconception Exposome? INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:12684. [PMID: 34886409 PMCID: PMC8657011 DOI: 10.3390/ijerph182312684] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 11/26/2021] [Accepted: 11/29/2021] [Indexed: 12/30/2022]
Abstract
Emerging research suggests environmental exposures before conception may adversely affect allergies and lung diseases in future generations. Most studies are limited as they have focused on single exposures, not considering that these diseases have a multifactorial origin in which environmental and lifestyle factors are likely to interact. Traditional exposure assessment methods fail to capture the interactions among environmental exposures and their impact on fundamental biological processes, as well as individual and temporal factors. A valid estimation of exposure preconception is difficult since the human reproductive cycle spans decades and the access to germ cells is limited. The exposome is defined as the cumulative measure of external exposures on an organism (external exposome), and the associated biological responses (endogenous exposome) throughout the lifespan, from conception and onwards. An exposome approach implies a targeted or agnostic analysis of the concurrent and temporal multiple exposures, and may, together with recent technological advances, improve the assessment of the environmental contributors to health and disease. This review describes the current knowledge on preconception environmental exposures as related to respiratory health outcomes in offspring. We discuss the usefulness and feasibility of using an exposome approach in this research, advocating for the preconception exposure window to become included in the exposome concept.
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Affiliation(s)
- Juan Pablo López-Cervantes
- Center for International Health, Department of Global Public Health and Primary Care, University of Bergen, 5020 Bergen, Norway; (M.L.); (A.J.); (G.T.); (J.K.); (C.S.)
- Department of Occupational Medicine, Haukeland University Hospital, 5021 Bergen, Norway; (N.O.J.); (T.M.K.); (S.M.S.)
| | - Marianne Lønnebotn
- Center for International Health, Department of Global Public Health and Primary Care, University of Bergen, 5020 Bergen, Norway; (M.L.); (A.J.); (G.T.); (J.K.); (C.S.)
- Department of Occupational Medicine, Haukeland University Hospital, 5021 Bergen, Norway; (N.O.J.); (T.M.K.); (S.M.S.)
| | - Nils Oskar Jogi
- Department of Occupational Medicine, Haukeland University Hospital, 5021 Bergen, Norway; (N.O.J.); (T.M.K.); (S.M.S.)
- Department of Clinical Science, University of Bergen, 5021 Bergen, Norway; (F.G.-R.); (R.J.B.)
| | - Lucia Calciano
- Unit of Epidemiology and Medical Statistics, Department of Diagnostics and Public Health, University of Verona, 37134 Verona, Italy; (L.C.); (S.A.)
| | | | - Matthew G. Darby
- Institute of Infectious Disease and Molecular Medicine and Division of Immunology, University of Cape Town, Cape Town 7925, South Africa;
| | - Shyamali C. Dharmage
- School of Population and Global Health, University of Melbourne, Melbourne, VIC 3010, Australia; (S.C.D.); (J.K.)
| | - Francisco Gómez-Real
- Department of Clinical Science, University of Bergen, 5021 Bergen, Norway; (F.G.-R.); (R.J.B.)
- Department of Obstetrics and Gynecology, Haukeland University Hospital, 5053 Bergen, Norway
| | - Barbara Hammer
- Department of Pulmonology, Medical University of Vienna, 1090 Vienna, Austria;
| | | | - Ane Johannessen
- Center for International Health, Department of Global Public Health and Primary Care, University of Bergen, 5020 Bergen, Norway; (M.L.); (A.J.); (G.T.); (J.K.); (C.S.)
| | - Anne Mette Lund Würtz
- Danish Ramazzini Centre, Department of Public Health—Work, Environment and Health, Aarhus University, 8000 Aarhus, Denmark; (A.M.L.W.); (K.P.); (V.S.)
| | - Toril Mørkve Knudsen
- Department of Occupational Medicine, Haukeland University Hospital, 5021 Bergen, Norway; (N.O.J.); (T.M.K.); (S.M.S.)
- Department of Clinical Science, University of Bergen, 5021 Bergen, Norway; (F.G.-R.); (R.J.B.)
| | - Jennifer Koplin
- School of Population and Global Health, University of Melbourne, Melbourne, VIC 3010, Australia; (S.C.D.); (J.K.)
- Murdoch Children’s Research Institute, Melbourne, VIC 3052, Australia
| | - Kathrine Pape
- Danish Ramazzini Centre, Department of Public Health—Work, Environment and Health, Aarhus University, 8000 Aarhus, Denmark; (A.M.L.W.); (K.P.); (V.S.)
| | - Svein Magne Skulstad
- Department of Occupational Medicine, Haukeland University Hospital, 5021 Bergen, Norway; (N.O.J.); (T.M.K.); (S.M.S.)
| | - Signe Timm
- Department of Regional Health Research, University of Southern Denmark, 5230 Odense, Denmark;
- Research Unit, Kolding Hospital, University Hospital of Southern Denmark, 6000 Kolding, Denmark
| | - Gro Tjalvin
- Center for International Health, Department of Global Public Health and Primary Care, University of Bergen, 5020 Bergen, Norway; (M.L.); (A.J.); (G.T.); (J.K.); (C.S.)
- Department of Occupational Medicine, Haukeland University Hospital, 5021 Bergen, Norway; (N.O.J.); (T.M.K.); (S.M.S.)
| | | | - Simone Accordini
- Unit of Epidemiology and Medical Statistics, Department of Diagnostics and Public Health, University of Verona, 37134 Verona, Italy; (L.C.); (S.A.)
| | - Vivi Schlünssen
- Danish Ramazzini Centre, Department of Public Health—Work, Environment and Health, Aarhus University, 8000 Aarhus, Denmark; (A.M.L.W.); (K.P.); (V.S.)
- National Research Centre for the Working Environment, 2100 Copenhagen, Denmark
| | - Jorunn Kirkeleit
- Center for International Health, Department of Global Public Health and Primary Care, University of Bergen, 5020 Bergen, Norway; (M.L.); (A.J.); (G.T.); (J.K.); (C.S.)
- Department of Occupational Medicine, Haukeland University Hospital, 5021 Bergen, Norway; (N.O.J.); (T.M.K.); (S.M.S.)
| | - Cecilie Svanes
- Center for International Health, Department of Global Public Health and Primary Care, University of Bergen, 5020 Bergen, Norway; (M.L.); (A.J.); (G.T.); (J.K.); (C.S.)
- Department of Occupational Medicine, Haukeland University Hospital, 5021 Bergen, Norway; (N.O.J.); (T.M.K.); (S.M.S.)
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14
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Zhang XY, Wang B, Xu S, Wang J, Gao L, Song YP, Lv JW, Xu FX, Li J, Chen J, Cui AQ, Zhang C, Wang H, Xu DX. Reactive oxygen species-evoked genotoxic stress mediates arsenic-induced suppression of male germ cell proliferation and decline in sperm quality. JOURNAL OF HAZARDOUS MATERIALS 2021; 406:124768. [PMID: 33310327 DOI: 10.1016/j.jhazmat.2020.124768] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 10/25/2020] [Accepted: 12/01/2020] [Indexed: 06/12/2023]
Abstract
This study aimed to investigate whether genotoxic stress mediates arsenic (As)-induced decline in sperm quality. Mice drank ultrapure water containing NaAsO2 (15 mg/L) for 70 days. The mature seminiferous tubules and epididymal sperm count were reduced in As-exposed mice. Cell proliferation, determined by immunostaining with Ki67, was suppressed in As-exposed seminiferous tubules and GC-1 cells. PCNA, a proliferation marker, was reduced in As-exposed mouse testes. Cell growth index was decreased in As-exposed GC-1 cells. Flow analysis showed that As-exposed GC-1 cells were retarded at G2/M phase. CDK1 and cyclin B1 were reduced in As-exposed GC-1 cells and mouse testes. Additional experiment revealed that p-ATR, a marker of genotoxic stress, was elevated in As-exposed mouse testes and GC-1 cells. Accordingly, p-p53 and p21, two downstream molecules of ATR, were increased in As-exposed GC-1 cells. Excess reactive oxygen species (ROS), measured by immunofluorescence, and DNA-strand break, determined by Comet assay, were observed in As-exposed GC-1 cells. γH2AX, a marker of DNA-strand break, was elevated in As-exposed seminiferous tubules and GC-1 cells. NAC alleviated As-evoked DNA damage, genotoxic stress, cell proliferation inhibition and sperm count reduction. In conclusion, ROS-evoked genotoxic stress mediates As-induced germ cell proliferation inhibition and decline in sperm quality.
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Affiliation(s)
- Xiao-Yi Zhang
- Department of Toxicology, Anhui Medical University, Hefei 230032, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Bo Wang
- Department of Toxicology, Anhui Medical University, Hefei 230032, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Shen Xu
- Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Jing Wang
- Department of Toxicology, Anhui Medical University, Hefei 230032, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Lan Gao
- Department of Toxicology, Anhui Medical University, Hefei 230032, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Ya-Ping Song
- Department of Toxicology, Anhui Medical University, Hefei 230032, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Jin-Wei Lv
- Department of Toxicology, Anhui Medical University, Hefei 230032, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Fei-Xiang Xu
- Department of Toxicology, Anhui Medical University, Hefei 230032, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Jian Li
- Department of Toxicology, Anhui Medical University, Hefei 230032, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Jing Chen
- Department of Toxicology, Anhui Medical University, Hefei 230032, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - An-Qi Cui
- Department of Toxicology, Anhui Medical University, Hefei 230032, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Cheng Zhang
- Department of Toxicology, Anhui Medical University, Hefei 230032, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Hua Wang
- Department of Toxicology, Anhui Medical University, Hefei 230032, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China.
| | - De-Xiang Xu
- Department of Toxicology, Anhui Medical University, Hefei 230032, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China.
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15
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Qi Z, Lu R, Wang S, Xiang C, Xie C, Zheng M, Tian X, Xu X. Selective fluorometric determination of microcystin-LR using a segment template molecularly imprinted by polymer-capped carbon quantum dots. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105798] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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16
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Zhang S, Du X, Liu H, Losiewic MD, Chen X, Ma Y, Wang R, Tian Z, Shi L, Guo H, Zhang H. The latest advances in the reproductive toxicity of microcystin-LR. ENVIRONMENTAL RESEARCH 2021; 192:110254. [PMID: 32991922 DOI: 10.1016/j.envres.2020.110254] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 09/02/2020] [Accepted: 09/20/2020] [Indexed: 06/11/2023]
Abstract
Microcystin-LR (MC-LR) is an emerging environmental pollutant produced by cyanobacteria that poses a threat to wild life and human health. In recent years, the reproductive toxicity of MC-LR has gained widespread attention, a large number of toxicological studies have filled the gaps in past research and more molecular mechanisms have been elucidated. Hence, this paper reviews the latest research advances on MC-LR-induced reproductive toxicity. MC-LR can damage the structure and function of the testis, ovary, prostate, placenta and other organs of animals and then reduce their fertility. Meanwhile, MC-LR can also be transmitted through the placenta to the offspring causing trans-generational and developmental toxicity including death, malformation, growth retardation, and organ dysfunction in embryos and juveniles. The mechanisms of MC-LR-induced reproductive toxicity mainly include the inhibition of protein phosphatase 1/2 A (PP1/2 A) activity and the induction of oxidative stress. On the one hand, MC-LR triggers the hyperphosphorylation of certain proteins by inhibiting intracellular PP1/2 A activity, thereby activating multiple signaling pathways that cause inflammation and blood-testis barrier destruction, etc. On the other hand, MC-LR-induced oxidative stress can result in cell programmed death via the mitochondrial and endoplasmic reticulum pathways. It is worth noting that epigenetic modifications are also involved in reproductive cell apoptosis, which may be an important direction for future research. Furthermore, this paper proposes for the first time that MC-LR can produce estrogenic effects in animals as an environmental estrogen. New findings and suggestions in this review could be areas of interest for future research.
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Affiliation(s)
- Shiyu Zhang
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Xingde Du
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Haohao Liu
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Michael D Losiewic
- Department of Chemistry and Biochemistry, St Mary's University, San Antonio, TX, USA
| | - Xinghai Chen
- Department of Chemistry and Biochemistry, St Mary's University, San Antonio, TX, USA
| | - Ya Ma
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Rui Wang
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Zhihui Tian
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Linjia Shi
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Hongxiang Guo
- College of Life Sciences, Henan Agricultural University, Zhengzhou, Henan, China.
| | - Huizhen Zhang
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China.
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