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Lian H, Zhang Y, Han C, Yang J. Reproductive toxicity of hexabromocyclododecane in rotifer Brachionus plicatilis: Involvement of reactive oxygen species and calcium signaling pathways. MARINE ENVIRONMENTAL RESEARCH 2024; 201:106689. [PMID: 39154542 DOI: 10.1016/j.marenvres.2024.106689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 07/22/2024] [Accepted: 08/12/2024] [Indexed: 08/20/2024]
Abstract
To assess the toxicity of Hexabromocyclododecane (HBCD), the population, individual, and cellular biochemical parameters of the rotifer Brachionus plicatilis exposed to different concentrations of HBCD were investigated. The results showed that the population growth rate, reproductive period, and offspring number in B. plicatilis significantly decreased under 324 μg/L and 648 μg/L HBCD. Antioxidant enzyme activity and mRNA expression of CAT and Mn-SOD were promoted at low concentrations (32 μg/L and 64 μg/L) and inhibited at high concentrations (324 μg/L and 648 μg/L), while MDA content accumulated continuously with increasing HBCD concentrations, indicating that HBCD induced oxidation imbalance in rotifers. Further evidence was provided by the correlation between DNA fragmentation and physiological changes. The increased intercellular concentration of Ca2+ and the expression of CaM mRNA suggested that HBCD activated pathways related to calcium signaling. In summary, the excessive production of ROS induced by HBCD was considered to be the main cause of reproductive toxicity.
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Affiliation(s)
- Hairong Lian
- School of Marine Science and Engineering, Nanjing Normal University, Nanjing, Jiangsu Province, 210023, China; School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province, 241002, China
| | - Yu Zhang
- School of Marine Science and Engineering, Nanjing Normal University, Nanjing, Jiangsu Province, 210023, China
| | - Cui Han
- School of Marine Science and Engineering, Nanjing Normal University, Nanjing, Jiangsu Province, 210023, China
| | - Jiaxin Yang
- School of Marine Science and Engineering, Nanjing Normal University, Nanjing, Jiangsu Province, 210023, China.
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2
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Lian H, Zhu L, Li M, Feng S, Gao F, Zhang X, Zhang F, Xi Y, Xiang X. Emerging threat of marine microplastics: Cigarette butt contamination on Yellow Sea beaches and the potential toxicity risks to rotifer growth and reproduction. JOURNAL OF HAZARDOUS MATERIALS 2024; 478:135534. [PMID: 39151359 DOI: 10.1016/j.jhazmat.2024.135534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 08/12/2024] [Accepted: 08/13/2024] [Indexed: 08/19/2024]
Abstract
Cigarette butts have become one of the most common and persistent forms of debris in marine coastal areas, where they pose significant toxicity risks. This study investigated cigarette butt pollution along beaches of the Yellow Sea and used laboratory experiments to assess the toxicity of their leachate and fibers on the euryhaline rotifer Brachionus plicatilis. A pollution index confirmed pollution by this debris across all eight beaches surveyed, where the density of cigarette butts averaged 0.23 butts/m2. In controlled laboratory experiments, both the fibers and leachates from cigarette butts exhibited negative impacts on the development, reproduction, and population growth of rotifers. Unique abnormalities observed under different exposure treatments indicated toxicity specific to certain chemicals and particles. Continuous exposure to cigarette butts initially reduced rotifer fecundity, but this effect diminished over successive generations. However, the exposure induced transgenerational reproductive toxicity in the rotifers. Adaptive responses in rotifers after repeated exposure led to relative reduction in reproductive inhibition in the F3 and F4 generations. Furthermore, rotifers were capable of ingesting and accumulating cigarette butts, and maternal transfer emerged as an alternative pathway for uptake of this material in the offspring. These results increase our understanding of the ecological risks posed by cigarette butts in aquatic environments.
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Affiliation(s)
- Hairong Lian
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China
| | - Lingyun Zhu
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China
| | - Meng Li
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China
| | - Sen Feng
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China
| | - Fan Gao
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China
| | - Xin Zhang
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China
| | - Fan Zhang
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China
| | - Yilong Xi
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China; Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-Founded by Anhui Province and Ministry of Education, Wuhu 241000, Anhui, China
| | - Xianling Xiang
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China; Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-Founded by Anhui Province and Ministry of Education, Wuhu 241000, Anhui, China.
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3
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Yu Q, Wang G, Shao Z, Sun Y, Yang Z. Changes in life history parameters and expression of key genes of Brachionus plicatilis exposed to a combination of organic and inorganic ultraviolet filters. CHEMOSPHERE 2024; 358:142213. [PMID: 38697570 DOI: 10.1016/j.chemosphere.2024.142213] [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: 02/05/2024] [Revised: 04/17/2024] [Accepted: 04/30/2024] [Indexed: 05/05/2024]
Abstract
The increasing use of ultraviolet filters has become an emerging contaminant on the coast, posing potential ecological risks. Rotifers are essential components of marine ecosystems, serving as an association between primary producers and higher-level consumers. These organisms frequently encounter ultraviolet filters in coastal waters. This study aimed to assess the comprehensive effects of organic ultraviolet filters, specifically 2-ethylhexyl-4-methoxycinnamate (EHMC), and inorganic ultraviolet filters, namely, titanium dioxide nanoparticles (TiO2 NPs), on the rotifer Brachionus plicatilis. We exposed B. plicatilis to multiple combinations of different concentrations of EHMC and TiO2 NPs to observe changes in life history parameters and the expression of genes related to reproduction and antioxidant responses. Our findings indicated that increased EHMC concentrations significantly delayed the age at first reproduction, reduced the total offspring, and led to considerable alterations in the expression of genes associated with reproduction and stress. Exposure to TiO2 NPs resulted in earlier reproduction and decreased total offspring, although these changes were not synchronised in gene expression. The two ultraviolet filters had a significant interaction on the age at first reproduction and the total offspring of rotifer, with these interactions extending to the first generation. This research offers new insights into the comprehensive effects of different types of ultraviolet filters on rotifers by examining life history parameters and gene expression related to reproduction and stress, highlighting the importance of understanding the impacts of sunscreen products on zooplankton health.
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Affiliation(s)
- Qingqing Yu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China
| | - Gongyuan Wang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China
| | - Zhihao Shao
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China
| | - Yunfei Sun
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China
| | - Zhou Yang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China.
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Chen T, Xu XP, Li JC, Tao KY, Zhao CS. Adequate nutrient intake mitigate the toxic effects of bromate on the rotifer Brachionus calyciflorus. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:11727-11734. [PMID: 38224435 DOI: 10.1007/s11356-024-31871-8] [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: 09/08/2023] [Accepted: 01/02/2024] [Indexed: 01/16/2024]
Abstract
Bromate is receiving increased attention as a typical disinfection by-product in aquatic environments, but bromate toxicity tests on invertebrate such as Brachionus calyciflorus rotifer are inadequate. In the present study, the long-term toxicity tests on B. calyciflorus were performed during 21 days under the exposure of different bromate concentrations and two algal density conditions. Furthermore, we evaluated the feeding behaviors of the rotifers under the impact of bromate. The maximum population density of rotifers was significantly reduced at 100 and 200 mg/L bromate exposure at the two algal density conditions. However, we observed that the maximum population density and population growth rate of rotifers were higher at 3.0 × 106 cells/mL algal density than those at 1.0 × 106 cells/mL under the same conditions of bromate exposure. These results suggest that higher food density may have alleviated the negative effects of bromate on rotifers. Meanwhile, the ingestion rate at an algal density of 3.0 × 106 cells/mL was higher than that at 1.0 × 106 cells/mL. The present study provides a basic reference to comprehensively evaluate the toxic effects of bromate on aquatic organisms.
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Affiliation(s)
- Tao Chen
- College of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, China
| | - Xiao-Ping Xu
- College of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, China.
- Center of Cooperative Innovation for Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded, Anhui Province and Ministry of Education, Wuhu, 241000, China.
| | - Jin-Cheng Li
- College of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, China
| | - Kai-Yan Tao
- College of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, China
| | - Chang-Shuang Zhao
- College of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, China
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Wang LM, Jia K, Li ZF, Qi HY, Liu DX, Liang YJ, Hao SL, Tan FQ, Yang WX. TiO 2 nanoparticles affect spermatogenesis and adhesion junctions via the ROS-mediated mTOR signalling pathway in Eriocheir sinensis testes. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023:121952. [PMID: 37270048 DOI: 10.1016/j.envpol.2023.121952] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/14/2023] [Accepted: 06/01/2023] [Indexed: 06/05/2023]
Abstract
Recent findings found that TiO2 nanoparticles (TiO2-NPs) have male reproductive toxicity. However, few reports have studied the toxicity of TiO2-NPs in crustaceans. In this study, we first chose the freshwater crustacean Eriocheir sinensis (E. sinensis) to explore the male toxicity of TiO2-NP exposure and the underlying mechanisms. Three nm and 25 nm TiO2-NPs at a dose of 30 mg/kg bw induced apoptosis and damaged the integrity of the haemolymph-testis-barrier (HTB, a structure similar to the blood-testis-barrier) and the structure of the seminiferous tubule. The 3-nm TiO2-NPs caused more severe spermatogenesis dysfunction than the 25-nm TiO2-NPs. We initially confirmed that TiO2-NP exposure affected the expression patterns of adherens junctions (α-catenin and β-catenin) and induced tubulin disorganization in the testis of E. sinensis. TiO2-NP exposure caused reactive oxygen species (ROS) generation and an imbalance of mTORC1-mTORC2 (mTORC1/rps6/Akt levels were increased, while mTORC2 activity was not changed). After using the ROS scavenger NAC to inhibit ROS generation, both the mTORC1-mTORC2 imbalance and alterations in AJs were rescued. More importantly, the mTORC1 inhibitor rapamycin abolished mTORC1/rps6/Akt hyperactivation and partially restored the alterations in AJs and tubulin. Collectively, the mTORC1-mTORC2 imbalance induced by TiO2-NPs was involved in the mechanism of AJ and HTB disruption, resulting in spermatogenesis in E. sinensis.
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Affiliation(s)
- Lan-Min Wang
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Ke Jia
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Zhen-Fang Li
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Hong-Yu Qi
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Ding-Xi Liu
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Ya-Jing Liang
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Shuang-Li Hao
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Fu-Qing Tan
- The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Wan-Xi Yang
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China.
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Yang L, Xu J, Gao H, Dai S, Liu L, Xi Y, Zhang G, Wen X. Toxicity enhancement of nano titanium dioxide to Brachionus calyciflorus (Rotifera) under simulated sunlight and the underlying mechanisms. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 251:114556. [PMID: 36669281 DOI: 10.1016/j.ecoenv.2023.114556] [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: 06/05/2022] [Revised: 01/12/2023] [Accepted: 01/15/2023] [Indexed: 06/17/2023]
Abstract
Nano titanium dioxide (nTiO2) generally shows low toxicity to organisms under light-emitting diode (LED) light. However, nTiO2 can induce production of reactive oxygen species (ROS) under ultraviolet (UV) light due to its photocatalytic activity. Therefore, it is reasonable to expect the enhancement of nTiO2 toxicity under sunlight. To test this hypothesis, we compared the toxicity of nTiO2 to Brachionus calyciflorus under simulated sunlight and LED light. The results showed that the 24 h-LC50 of nTiO2 to B. calyciflorus under LED light and simulated sunlight were 24.32 (95% CI: 14.54-46.81 mg/L) and 10.44 mg/L (95% CI: 6.74-17.09 mg/L), respectively. Compared with the blank control, treatments with nTiO2 significantly affected life-table demographic parameters, population growth parameters and swimming linear speed under both simulated sunlight and LED light. However, life expectancy, net reproductive rate, average lifespan, maximal population density, and swimming linear speed in the treatments of nTiO2 at 0.1, 1, and/or 10 mg/L showed markedly lower values under simulated sunlight than those under LED light, suggesting that simulated sunlight could enhance the toxicity of nTiO2. In addition, markedly higher catalase (CAT) activity and malondialdehyde (MDA) content but lower glutathione (GSH) content were observed in treatment with 10 mg/L nTiO2 under simulated sunlight than that under LED light. The results showed that compared with LED light, simulated sunlight significantly induced more oxidative stress in the presence of nTiO2, and the ROS production was mainly localized to the corona and digestive tract of rotifers by confocal laser scanning microscope. Exposure to 10-50 μM of vitamin C, that is an effective ROS scavenger, could rescue the swimming linear speed of rotifers to the normal level in the blank control. These results suggested that oxidative damages on cell membrane might be the vital mechanism underlying the toxicity enhancement of nTiO2 to rotifers under simulated sunlight. Thus, the previous publications under LED light may underestimate the real toxicity and environmental risk of nTiO2 in natural conditions.
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Affiliation(s)
- Liu Yang
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China; Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Wuhu 241002, China
| | - Jinqian Xu
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China; Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Wuhu 241002, China
| | - Huahua Gao
- College of Chemistry & Pharmacy, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Shiniu Dai
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China; Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Wuhu 241002, China
| | - Lingli Liu
- College of Chemistry & Pharmacy, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Yilong Xi
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China; Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Wuhu 241002, China
| | - Gen Zhang
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China.
| | - Xinli Wen
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China; Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Wuhu 241002, China.
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7
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Feng S, Zhang Y, Gao F, Li M, Zhu L, Wen H, Xi Y, Xiang X. Inhibitory Effects of Antipsychotic Chlorpromazine on the Survival, Reproduction and Population Growth Other Than Neurotransmitters of Zooplankton in Light of Global Warming. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:16167. [PMID: 36498239 PMCID: PMC9736287 DOI: 10.3390/ijerph192316167] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/17/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
Global warming and environmental pollution have created a unique combination of abiotic and biotic stresses to zooplankton. However, little information is available on the effects of antipsychotic drugs commonly used to treat psychosis, such as chlorpromazine (CPZ), on non-target aquatic organisms in light of global warming. This study investigated how dopamine concentrations (DAC), acute toxicity and chronic toxicity of Brachionus calyciflorus changed in response to CPZ and gradually increasing temperatures. The results showed that the concentration range of rotifer DAC was 1.06~2.51 ng/g. At 18, 25 and 32 °C, the 24 h LC50 was 1.795, 1.242 and 0.833 mg/L, respectively. Compared to the control, exposure to CPZ significantly decreased life expectancy at hatching, the net reproduction rate, generation time, population growth rate and dopamine concentration of B. calyciflorus in all three temperatures (p < 0.05). The toxicity of CPZ to rotifers was increased by high temperature. These findings indicated that CPZ is highly toxic to rotifers, displaying high ecological risks to aquatic ecosystems.
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Affiliation(s)
- Sen Feng
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China
| | - Yongzhi Zhang
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China
| | - Fan Gao
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China
| | - Meng Li
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China
| | - Lingyun Zhu
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China
| | - Hao Wen
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China
| | - Yilong Xi
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-Founded by Anhui Province and Ministry of Education, Wuhu 241002, China
| | - Xianling Xiang
- School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-Founded by Anhui Province and Ministry of Education, Wuhu 241002, China
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8
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Zhang H, Chen Y, Wang J, Wang Y, Wang L, Duan Z. Effects of temperature on the toxicity of waterborne nanoparticles under global warming: Facts and mechanisms. MARINE ENVIRONMENTAL RESEARCH 2022; 181:105757. [PMID: 36208504 DOI: 10.1016/j.marenvres.2022.105757] [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: 08/17/2022] [Revised: 09/20/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
Global climate change is predicted to increase the average temperature of aquatic environments. Temperature changes modulate the toxicity of emerging chemical contaminants, such as nanoparticles (NPs). However, current hazard assessments of waterborne NPs seldom consider the influence of temperature. In this review, we gathered and analyzed the effects of temperature on the toxicity of waterborne NPs in different organisms. There was a general decrease in bioavailability with increasing temperature in algae and plants due to NPs aggregation, thus, reducing their toxicities. However, the agglomerated large particles caused by the increase in temperature induce a shading effect and inhibit algal photosynthesis. The toxicity of NPs in microorganisms and aquatic animals increases with increasing temperature. This may be due to the significant influence of high temperature on the uptake and excretion of chemicals across membranes, which increase the production of reactive oxygen species and enhance oxidative damage to organisms. High temperature also affect the formation and composition of a protein corona on NPs, altering their toxicity. Our results provide new insights into the toxicity of NPs in the context of global warming, and highlight the deficiencies of current research on NPs.
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Affiliation(s)
- Haihong Zhang
- Tianjin Key Laboratory of Hazardous Waste Safety Disposal and Recycling Technology, School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Yizhuo Chen
- Tianjin Key Laboratory of Hazardous Waste Safety Disposal and Recycling Technology, School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Jing Wang
- Tianjin Key Laboratory of Hazardous Waste Safety Disposal and Recycling Technology, School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Yudi Wang
- Tianjin Key Laboratory of Hazardous Waste Safety Disposal and Recycling Technology, School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Lei Wang
- College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Zhenghua Duan
- Tianjin Key Laboratory of Hazardous Waste Safety Disposal and Recycling Technology, School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin, 300384, China; College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
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9
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Bownik A, Adamczuk M, Pawlik-Skowrońska B. Behavioral disturbances induced by cyanobacterial oligopeptides microginin-FR1, anabaenopeptin-A and microcystin-LR are associated with neuromotoric and cytotoxic changes in Brachionus calyciflorus. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129472. [PMID: 35785735 DOI: 10.1016/j.jhazmat.2022.129472] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 06/21/2022] [Accepted: 06/25/2022] [Indexed: 06/15/2023]
Abstract
Aquatic animals are exposed to various cyanobacterial products released concomitantly to the environment by decaying blooms. Although there exist results on the toxicity of cyanobacterial extracts little is known on the influence of pure oligopeptides or their mixtures and elucidated mechanisms of behavioral toxicity in zooplanktonic organisms. Therefore, the aim of the present study was to assess the effects of single and mixed pure cyanobacterial oligopeptides: microginin FR-1 (MG-FR1), anabaenopeptin-A (ANA-A) and microcystin-LR (MC-LR) at various concentrations on the swimming behavior and catecholamine neurotransmitter activity, muscular F-actin structure, DNA nuclear content and cell viability of a model rotifer Brachionus calyciflorus. Swimming behavior was analyzed with the use of video digital analysis. Fluorescent microscopy imaging was used to analyze neuromotoric biomarkers in the whole organisms: neuromediator release (by staining with EC517 probe), muscle F-actin filaments (by staining with blue phalloidin dye). DNA content and cytotoxicity was also determined by Hoechst 34580 and propidium iodide double staining, respectively. The results showed that single oligopeptides inhibited all the tested endpoints. The binary mixtures induced synergistic interaction on swimming speed except for MG-FR1 +MC-LR which was nearly additive. Both binary and ternary mixtures also synergistically degraded F-actin and triggered cytotoxic effects visible in the whole organisms. Antagonistic inhibitory effects of all the binary mixtures were found on catecholamine neurotransmitter activity, however the ternary mixture induced additive toxicity. Antagonistic effects of both binary and ternary mixtures were also noted on nuclear DNA content. The results of the study suggest that both depression of neurotransmission and impairment of muscle F-actin structure in muscles may contribute to mechanisms of Brachionus swimming speed inhibition by the tested single cyanobacterial oligopeptides and their mixtures. The study also showed that natural exposure of rotifers to mixtures of these cyanobacterial metabolites may result in different level of interactive toxicity with antagonistic, additive synergistic effects depending on the variants and concentrations present in the environment.
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Affiliation(s)
- Adam Bownik
- Department of Hydrobiology and Protection of Ecosystems, University of Life Sciences in Lublin, Dobrzańskiego 37, 20-262 Lublin, Poland.
| | - Małgorzata Adamczuk
- Department of Hydrobiology and Protection of Ecosystems, University of Life Sciences in Lublin, Dobrzańskiego 37, 20-262 Lublin, Poland
| | - Barbara Pawlik-Skowrońska
- Department of Hydrobiology and Protection of Ecosystems, University of Life Sciences in Lublin, Dobrzańskiego 37, 20-262 Lublin, Poland
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10
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Li M, Zhang Y, Feng S, Zhang X, Xi Y, Xiang X. Bioaccumulation and biomagnification effects of nano-TiO 2 in the aquatic food chain. ECOTOXICOLOGY (LONDON, ENGLAND) 2022; 31:1023-1034. [PMID: 35831721 DOI: 10.1007/s10646-022-02572-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/02/2022] [Indexed: 06/15/2023]
Abstract
The increasing production of nano-TiO2 has attracted extensive concerns about the ecological consequence and health risk of these compounds in natural ecosystem. However, little is known about its toxicity on zooplankton, especially its possibility to access to the food chain via dietary exposure. To address this concern, the toxic and cumulative effects of nano-TiO2 on an aquatic food chain were explored through two trophic levels independently or jointly including producer and consumer. The results revealed that exposure to suspensions of nanomaterials had negative effects on both producers and consumers. Specifically, nanoparticles reduced the density of algal cells in a concentration-dependent way, and hatching life expectancy, average lifespan, net reproductive rate, and population intrinsic growth rate of rotifers decreased significantly with the concentration of nanomaterials increased (P < 0.05). Notably, nanoparticles accumulated in algal cells and were transferred to consumers through dietary exposure. Biomagnification of nano-TiO2 was observed in this simplified food chain, as many of the biomagnification factor (BMF) values in this study were >1. Exposure concentration, exposure time and their interactions play a strong part in the accumulation of nanoparticles in algae and rotifers. Overall, the present findings confirmed that nano-TiO2 was deleterious to plankton, posing a significant environmental threat to aquatic ecosystems. Graphical abstract.
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Affiliation(s)
- Meng Li
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241002, Anhui, China
| | - Yongzhi Zhang
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241002, Anhui, China
| | - Sen Feng
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241002, Anhui, China
| | - Xuxiang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023, Nanjing, China
| | - Yilong Xi
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241002, Anhui, China
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Wuhu, 241000, Anhui, China
| | - Xianling Xiang
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241002, Anhui, China.
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Wuhu, 241000, Anhui, China.
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11
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Roy R, Kandrapu VK, Kempter L, Islam R, Kalčíková G, Schulz R, Bundschuh M. Nanosized titanium dioxide elevates toxicity of cationic metals species for Daphnia - have aging and natural organic matter an unexpected impact? Nanotoxicology 2022; 16:16-28. [PMID: 35085470 DOI: 10.1080/17435390.2022.2027538] [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: 10/19/2022]
Abstract
In aquatic ecosystems, nanosized titanium dioxide particles (nTiO2) likely interact with natural organic matter (NOM) and may alter the ecotoxicity of co-occurring metals. The magnitude of changes in toxicity may be modulated by the duration of interactions (i.e. aging) between these factors. As those interactions are hardly addressed in literature, the present study aimed at assessing the impact of aging durations (0, 1, 3 and 6 days) on metals with mainly cationic (silver (Ag), cadmium (Cd)) or anionic (arsenic (As)) toxic ions in combination with three nTiO2 levels (0.0, 0.6 and 3.0 mg/L) and two NOM levels (0 versus 8 mg TOC/L). The interaction of these factors was additionally investigated for two aging scenarios: in one scenario nTiO2 were aged together with one of the metals, while in other scenario metals were added to aged nTiO2. Subsequently, their combined acute effects on Daphnia magna were assessed. The results uncovered that nTiO2 elevate the toxicity of metals with mainly cationic species (i.e. Ag+ and Cd2+) with the effect size depending on their valence electron. Contrary, nTiO2 have no impact on the metal with mainly anionic species (i.e. HAsO42-). Furthermore, NOM reduced metal toxicity only for Ag and aging duration had a limited impact on the test outcome suggesting that relevant interactions between metal and nTiO2 occur rather quick (below 24 h). These findings suggest that the charge of metals' most toxic species is the determining factor for its interaction with nanoparticles and the resulting ecotoxicological effect assessment.
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Affiliation(s)
- Rajdeep Roy
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Landau, Germany
| | - Vinod Kumar Kandrapu
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Landau, Germany
| | - Lucas Kempter
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Landau, Germany
| | - Rezaul Islam
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Landau, Germany
| | - Gabriela Kalčíková
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Ralf Schulz
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Landau, Germany
| | - Mirco Bundschuh
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Landau, Germany.,Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden
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12
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Cheng SH, Zhang HY, Zhu MY, Zhou LM, Yi GH, He XW, Wu JY, Sui JL, Wu H, Yan SJ, Zhang YX, Lv CZ. Observations of linear aggregation behavior in rotifers (Brachionus calyciflorus). PLoS One 2021; 16:e0256387. [PMID: 34411194 PMCID: PMC8376037 DOI: 10.1371/journal.pone.0256387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 08/06/2021] [Indexed: 11/18/2022] Open
Abstract
Linear aggregation is present in some animals, such as the coordinated movement of ants and the migration of caterpillars and spinylobsters, but none has been reported on rotifers. The rotifers were collected and clone cultured in the laboratory at 25 ± 1°C, under natural light (light intensity ~130 lx, L:D = 14:10). The culture medium(pH = 7.3) was formulated as described by Suga et al., and rotifers were fed on the micro algae Scenedesmus obliquus grown in HB-4 medium to the exponential growth stage. When density was high (150 individuals ml-1), the behavior of rotifers was observed using a stereo microscope (Motic ES-18TZLED). In this paper, linear aggregation in Brachionus calyciflorus was found for the first time, and experiments were carried out to verify the correlation between linear aggregation and culture density of B. calyciflorus. With the increase of density, the number of aggregations increase, the number of individuals in the aggregation increased, and the maintenance time of the aggregation was also increased. Therefore, we speculate that the formation of aggregates is related to density and may be a behavioral signal of density increase, which may transmit information between density increase and formation of dormant eggs.
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Affiliation(s)
- Shuang-Huai Cheng
- Public Rsearch Lab, Hainan Medical University, Haikou, Hainan, China
| | - Hai-Ying Zhang
- Public Rsearch Lab, Hainan Medical University, Haikou, Hainan, China
| | - Ming-Yue Zhu
- Department of Basic Medicine and Life Sciences, Hainan Medical University, Haikou, Hainan, China
| | - Li Min Zhou
- Public Rsearch Lab, Hainan Medical University, Haikou, Hainan, China
| | - Guo-Hui Yi
- Public Rsearch Lab, Hainan Medical University, Haikou, Hainan, China
| | - Xiao-Wen He
- Public Rsearch Lab, Hainan Medical University, Haikou, Hainan, China
| | - Jin-Yan Wu
- Public Rsearch Lab, Hainan Medical University, Haikou, Hainan, China
| | - Jin-Lei Sui
- Public Rsearch Lab, Hainan Medical University, Haikou, Hainan, China
| | - Hua Wu
- Public Rsearch Lab, Hainan Medical University, Haikou, Hainan, China
| | - Shi-Jiao Yan
- Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, Hainan, China
- School of Public Health, Hainan Medical University, Haikou, Hainan, China
| | - Yun-Xia Zhang
- Public Rsearch Lab, Hainan Medical University, Haikou, Hainan, China
- Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, Hainan, China
| | - Chuan-Zhu Lv
- Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, Hainan, China
- School of Public Health, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Emergency and Trauma of Ministry of Education, Hainan Medical University, Haikou, Hainan, China
- Department of Emergency, Hainan Clinical Research Center for Acute and Critical Diseases, The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China
- Emergency and Trauma College, Hainan Medical University, Haikou, Hainan, China
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13
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Xu XP, Chen T, Wei XY, Yang XF, Xi YL, Wang XM. Effects of bromate on life history parameters, swimming speed and antioxidant biomarkers in Brachionus calyciflorus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 208:111705. [PMID: 33396036 DOI: 10.1016/j.ecoenv.2020.111705] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 08/28/2020] [Accepted: 11/19/2020] [Indexed: 06/12/2023]
Abstract
The baking industries and disinfection of tap water released a considerable amount of bromate into surface water, which has been reported as a carcinogenic compound to mammals. Rotifers play an important role in freshwater ecosystems and are model organisms to assess environmental contamination. In the present study, the effects of different concentrations (0.001, 0.01, 0.1, 1, 10, 100 and 200 mg/L) of bromate on the life-table and population growth parameters were investigated in the rotifer Brachionus calyciflorus. The results showed that the 24-h LC50 of bromate to B. calyciflorus was 365.29 mg/L (95%Cl: 290.37-480.24). Treatments with 0.01, 10 and 200 mg/L bromate shorten the reproductive period. High levels of bromate (100 and 200 mg/L) significantly decreased net reproductive rate, intrinsic rate of population increase, life span, mictic rate of B. calyciflorus. To investigate the underlying mechanisms, swimming speed and antioxidative biomarkers were compared between bromate treatments and the control. The results showed that glutathione (GSH) and malondialdehyde (MDA) contents, total superoxide dismutase (T-SOD) and peroxidase (POD) activities decreased significantly in response to bromate exposure and the reasons required further investigation. Treatments with 0.001-200 mg/L bromate all significantly reduced swimming linear speed to rotifer larvae and treatments with 100-200 mg/L bromate significantly suppressed the swimming linear speed of adult rotifer. These changes would reduce filtration of algal food and could explain the decreased survival and reproduction. Overall, bromate may not show acute toxicity to rotifers, but still have potential adverse effects on rotifer behavior, which may then influence the community structure in aquatic ecosystems.
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Affiliation(s)
- Xiao-Ping Xu
- College of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu 241000, China; Center of Cooperative Innovation for Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Wuhu 241000, China.
| | - Tao Chen
- College of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu 241000, China
| | - Xue-Yu Wei
- College of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu 241000, China.
| | - Xiao-Fan Yang
- College of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu 241000, China
| | - Yi-Long Xi
- Center of Cooperative Innovation for Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Wuhu 241000, China; College of Life Sciences, Anhui Normal University, Wuhu 241000, China
| | - Xing-Ming Wang
- School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China
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14
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Datki Z, Acs E, Balazs E, Sovany T, Csoka I, Zsuga K, Kalman J, Galik-Olah Z. Exogenic production of bioactive filamentous biopolymer by monogonant rotifers. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 208:111666. [PMID: 33396176 DOI: 10.1016/j.ecoenv.2020.111666] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/31/2020] [Accepted: 11/12/2020] [Indexed: 06/12/2023]
Abstract
The chemical ecology of rotifers has been little studied. A yet unknown property is presented within some monogonant rotifers, namely the ability to produce an exogenic filamentous biopolymer, named 'Rotimer'. This rotifer-specific viscoelastic fiber was observed in six different freshwater monogonants (Euchlanis dilatata, Lecane bulla, Lepadella patella, Itura aurita, Colurella adriatica and Trichocerca iernis) in exception of four species. Induction of Rotimer secretion can only be achieved by mechanically irritating rotifer ciliate with administering different types (yeast cell skeleton, denatured BSA, epoxy, Carmine or urea crystals and micro-cellulose) and sizes (approx. from 2.5 to 50 µm diameter) of inert particles, as inductors or visualization by adhering particles. The thickness of this Rotimer is 33 ± 3 nm, detected by scanning electron microscope. This material has two structural formations (fiber or gluelike) in nano dimension. The existence of the novel adherent natural product becomes visible by forming a 'Rotimer-Inductor Conglomerate' (RIC) web structure within a few minutes. The RIC-producing capacity of animals, depends on viability, is significantly modified according to physiological- (depletion), drug- (toxin or stimulator) and environmental (temperature, salt content and pH) effects. The E. dilatata-produced RIC is affected by protein disruptors but is resistant to several chemical influences and its Rotimer component has an overwhelming cell (algae, yeast and human neuroblastoma) motility inhibitory effect, associated with low toxicity. This biopolymer-secretion-capacity is protective of rotifers against human-type beta-amyloid aggregates.
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Affiliation(s)
- Zsolt Datki
- Department of Psychiatry, Faculty of Medicine, University of Szeged, Vasas Szent Peter u. 1-3, H-6724 Szeged, Hungary.
| | - Eva Acs
- Danube Research Institute, MTA Centre for Ecological Research, Karolina ut 29-31, H-1113 Budapest, Hungary; National University of Public Service, Faculty of Water Sciences, 6500 Baja, Bajcsy-Zsilinszky utca 12-14., Hungary
| | - Evelin Balazs
- Department of Psychiatry, Faculty of Medicine, University of Szeged, Vasas Szent Peter u. 1-3, H-6724 Szeged, Hungary
| | - Tamas Sovany
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacology, University of Szeged, Eotvos u. 6, H-6720 Szeged, Hungary
| | - Ildiko Csoka
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacology, University of Szeged, Eotvos u. 6, H-6720 Szeged, Hungary
| | | | - Janos Kalman
- Department of Psychiatry, Faculty of Medicine, University of Szeged, Vasas Szent Peter u. 1-3, H-6724 Szeged, Hungary
| | - Zita Galik-Olah
- Department of Psychiatry, Faculty of Medicine, University of Szeged, Vasas Szent Peter u. 1-3, H-6724 Szeged, Hungary
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