1
|
Panzenhagen AC, Petry FDS, Alves-Teixeira A, Santos L, Carazza-Kessler FG, Gelain DP, Moreira JCF. Biomarkers of methylmercury neurotoxicity and neurodevelopmental features: A systematic review. Food Chem Toxicol 2024; 191:114851. [PMID: 38986832 DOI: 10.1016/j.fct.2024.114851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 07/02/2024] [Accepted: 07/04/2024] [Indexed: 07/12/2024]
Abstract
The issue of MeHg contamination is a significant concern due to its detrimental impact on the environment. This study aimed to thoroughly investigate the effects of MeHg on neurodevelopmental biomarkers, as there is a lack of systematic reviews in this area. We conducted a comprehensive search of three databases (PubMed, Scopus, and Web of Science) and found 522 records, which were then meticulously reviewed by two independent reviewers. A total of 66 studies were included, with biomarkers related to oxidative stress, neurotransmission, inflammation, epigenetics, and apoptosis being the most prominent. The results of both in vitro and in vivo models indicate that antioxidant enzymes and other oxidative stress-related markers are indeed, altered following MeHg exposure. Moreover, MeHg exposure causes significant disruptions to neurotransmitter levels, activities of neurotransmitter synthesis enzymes, receptor densities, and proteins involved in synaptic function. Proinflammatory biomarkers are consistently overexpressed in both MeHg-treated cells and the brains of exposed rats. Furthermore, studies on DNA methylation and biomarker activity suggest that MeHg exposure may lead to neurotoxicity and neurodevelopmental issues via perturbations to epigenetic markers and the apoptosis pathway.
Collapse
Affiliation(s)
- Alana Castro Panzenhagen
- Centro de Estudos Em Estresse Oxidativo, Programa de Pós-Graduação Em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil.
| | - Fernanda Dos Santos Petry
- Centro de Estudos Em Estresse Oxidativo, Programa de Pós-Graduação Em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Alexsander Alves-Teixeira
- Centro de Estudos Em Estresse Oxidativo, Programa de Pós-Graduação Em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Lucas Santos
- Centro de Estudos Em Estresse Oxidativo, Programa de Pós-Graduação Em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Flávio Gabriel Carazza-Kessler
- Centro de Estudos Em Estresse Oxidativo, Programa de Pós-Graduação Em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Daniel Pens Gelain
- Centro de Estudos Em Estresse Oxidativo, Programa de Pós-Graduação Em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - José Cláudio Fonseca Moreira
- Centro de Estudos Em Estresse Oxidativo, Programa de Pós-Graduação Em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| |
Collapse
|
2
|
Qiu X, Su Z, Gao J, Cui Y, Dong K, Chen K, Zhao RJ, Wang S, Wu T, Shi Y. Sex-specific impacts of thimerosal on the behaviors and brain monoaminergic systems in zebrafish (Danio rerio). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2024; 271:106921. [PMID: 38615580 DOI: 10.1016/j.aquatox.2024.106921] [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: 11/01/2023] [Revised: 03/30/2024] [Accepted: 04/07/2024] [Indexed: 04/16/2024]
Abstract
Thimerosal (THI) is the most widely used form of organic mercury in pharmaceutical and personal care products, and has become a major source of ethylmercury pollution in aquatic ecosystems. However, knowledge about its potential risk to aquatic species is limited. In this study, zebrafish were exposed to THI for 7 days, and variations in their behavioral traits, brain monoaminergic neurotransmitter contents, and related gene expression were investigated. After the 7-day exposure, THI reduced locomotor activity and thigmotaxis in males but not females. Exposure to THI increased the social interaction between females but decreased that between males. The THI exposure also significantly reduced the serotonin (5-HT), 5-hydroxyindoleacetic acid, dopamine (DA), and 3,4-dihydroxyphenylacetic acid contents in the brain of males, but only significantly decreased the DA content in females. Correlation analysis revealed that the neurochemical alterations in the brain of zebrafish play critical roles in the behavioral abnormalities induced by THI exposure. Moreover, THI also significantly altered the expression of some genes associated with the synthesis, metabolism, and receptor binding of 5-HT and DA in the brain of zebrafish. The differences in these gene expressions between female and male zebrafish exposed to THI seem to be an important mechanism underlying their sex-specific responses to this chemical. This is the first report on the sex-specific effects of THI on behaviors and brain monoaminergic neurotransmitter contents in zebrafish, which can further improve our understanding of its toxic effects on teleost.
Collapse
Affiliation(s)
- Xuchun Qiu
- Institute of Environmental Health and Ecological Security, College of Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Zhen Su
- Institute of Environmental Health and Ecological Security, College of Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Jiarui Gao
- Institute of Environmental Health and Ecological Security, College of Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yiming Cui
- Institute of Environmental Health and Ecological Security, College of Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Kejun Dong
- Institute of Environmental Health and Ecological Security, College of Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Kun Chen
- Institute of Environmental Health and Ecological Security, College of Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Ru-Jin Zhao
- Institute of Environmental Health and Ecological Security, College of Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Songmei Wang
- Institute of Environmental Health and Ecological Security, College of Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Tao Wu
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Yanhong Shi
- Institute of Environmental Health and Ecological Security, College of Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
| |
Collapse
|
3
|
Blewett TA, Ackerly KL, Schlenker LS, Martin S, Nielsen KM. Implications of biotic factors for toxicity testing in laboratory studies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 908:168220. [PMID: 37924878 DOI: 10.1016/j.scitotenv.2023.168220] [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: 07/11/2023] [Revised: 10/25/2023] [Accepted: 10/28/2023] [Indexed: 11/06/2023]
Abstract
There is an emerging call from scientists globally to advance the environmental relevance of laboratory studies, particularly within the field of ecotoxicology. To answer this call, we must carefully examine and elucidate the shortcomings of standardized toxicity testing methods that are used in the derivation of toxicity values and regulatory criteria. As a consequence of rapidly accelerating climate change, the inclusion of abiotic co-stressors are increasingly being incorporated into toxicity studies, with the goal of improving the representativeness of laboratory-derived toxicity values used in ecological risk assessments. However, much less attention has been paid to the influence of biotic factors that may just as meaningfully impact our capacity to evaluate and predict risks within impacted ecosystems. Therefore, the overarching goal is to highlight key biotic factors that should be taken into consideration during the experimental design and model selection phase. SYNOPSIS: Scientists are increasingly finding that lab reared results in toxicology might not be reflective of the external wild environment, we highlight in this review some key considerations when working between the lab and field.
Collapse
Affiliation(s)
- Tamzin A Blewett
- University of Alberta, Department of Biological Sciences, Canada.
| | - Kerri Lynn Ackerly
- The University of Texas at Austin, Marine Science Institute, United States of America
| | - Lela S Schlenker
- East Carolina University, Department of Biology, United States of America
| | - Sidney Martin
- University of Alberta, Department of Biological Sciences, Canada
| | - Kristin M Nielsen
- The University of Texas at Austin, Marine Science Institute, United States of America
| |
Collapse
|
4
|
Mukherjee D, Ferreira NGC, Saha NC. Effects of 2,4,6-Trichlorophenol on Clarias batrachus: a biomarkers approach. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:47011-47024. [PMID: 35175533 PMCID: PMC9232441 DOI: 10.1007/s11356-022-19213-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 02/10/2022] [Indexed: 06/14/2023]
Abstract
2,4,6-Trichlorophenol (2,4,6-TCP) is a common waste among the resulting chlorophenols generated in the production of common products classified as an extremely toxic, mutagenic, carcinogenic and highly persistent xenobiotic in the environment. To evaluate the impact of 2,4,6-TCP in aquatic systems, the catfish species Clarias batrachus has been selected to test its toxicity due to its high market value and consumption in India. Here is presented the impact of this compound on different physiological parameters of fish: haematological parameters (haemoglobin, total erythrocyte count, total leucocyte count and mean corpuscular haemoglobin), biochemical parameters (total serum protein and total serum glucose), growth and reproductive parameters (condition factor, hepatosomatic index, maturity index, specific growth rate, growth hormone, 17β-estradiol and testosterone), exposed to two concentrations of 2,4,6-TCP (0.5 mg/L and 1 mg/L - 1/10th and 1/20th of the LC50) for a period of 15, 30 and 45 days. The results showed that C. batrachus even when exposed to the lower concentration (0.5 mg/L) for the shortest time (15 days) negatively impacted the organism in all the assessed parameters. This was highlighted by the Integrated Biomarker Response index (IBR), showing worse scores for the treatments (up to 20 × worse than the control). This work highlights the importance of continued research on the impact of 2,4,6-TCP, on an important commercial, supported by the high environmental persistence of this compound that can reach the same range of tested concentrations.
Collapse
Affiliation(s)
- Dip Mukherjee
- Department of Zoology, S.B.S. Government College, Hili, Mera Aptair, Balurghat, Dakshin Dinajpur-733126, West Bengal, India
| | - Nuno G C Ferreira
- School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK.
- CIIMAR, Terminal de Cruzeiros de Leixões, Av. General Norton de Matos S/N, 4450-208, Matosinhos, Portugal.
| | - Nimai Chandra Saha
- The University of Burdwan, Fishery and Ecotoxicology Research Laboratory, Vice Chancellor's Research Group, Department of Zoology, University of Burdwan, Purba Barddhaman, West Bengal, India
| |
Collapse
|
5
|
Albers JL, Steibel JP, Klingler RH, Ivan LN, Garcia-Reyero N, Carvan MJ, Murphy CA. Altered Larval Yellow Perch Swimming Behavior Due to Methylmercury and PCB126 Detected Using Hidden Markov Chain Models. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:3514-3523. [PMID: 35201763 DOI: 10.1021/acs.est.1c07505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Fish swimming behavior is a commonly measured response in aquatic ecotoxicology because behavior is considered a whole organism-level effect that integrates many sensory systems. Recent advancements in animal behavior models, such as hidden Markov chain models (HMM), suggest an improved analytical approach for toxicology. Using both new and traditional approaches, we examined the sublethal effects of PCB126 and methylmercury on yellow perch (YP) larvae (Perca flavescens) using three doses. Both approaches indicate larvae increase activity after exposure to either chemical. The middle methylmercury-dosed larvae showed multiple altered behavior patterns. First, larvae had a general increase in activity, typically performing more behavior states, more time swimming, and more swimming bouts per second. Second, when larvae were in a slow or medium swimming state, these larvae tended to switch between these states more often. Third, larvae swam slower during the swimming bouts. The upper PCB126-dosed larvae exhibited a higher proportion and a fast swimming state, but the total time spent swimming fast decreased. The middle PCB126-dosed larvae transitioned from fast to slow swimming states less often than the control larvae. These results indicate that developmental exposure to very low doses of these neurotoxicants alters YP larvae overall swimming behaviors, suggesting neurodevelopment alteration.
Collapse
Affiliation(s)
- Janice L Albers
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, Michigan 48824, United States
| | - Juan P Steibel
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, Michigan 48824, United States
| | - Rebekah H Klingler
- School of Freshwater Sciences, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53204, United States
| | - Lori N Ivan
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, Michigan 48824, United States
| | - Natàlia Garcia-Reyero
- Environmental Laboratory, US Army Engineer Research and Development Center, Vicksburg, Mississippi, 39180, United States
| | - Michael J Carvan
- School of Freshwater Sciences, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53204, United States
| | - Cheryl A Murphy
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, Michigan 48824, United States
| |
Collapse
|
6
|
Fu CW, Horng JL, Tong SK, Cherng BW, Liao BK, Lin LY, Chou MY. Exposure to silver impairs learning and social behaviors in adult zebrafish. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:124031. [PMID: 33265049 DOI: 10.1016/j.jhazmat.2020.124031] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/07/2020] [Accepted: 09/16/2020] [Indexed: 06/12/2023]
Abstract
Silver and silver nanoparticles are used in several consumer products, particularly sterilizing agents. Ag+ released from the particles causes physiological damages of aquatic organisms. However, the effects of silver on neural and behavioral functions of fish remain unclear. Here, we used zebrafish as a model to investigate the impacts of silver on social, learning and memory behaviors in teleost. Adult zebrafish showed mortality rates of 12.875% and 100% on 72 h exposure to 30 and ≥ 50 ppb of silver nitrate, respectively. Silver accumulation in the brain increased on exposure to 10 and 30 ppb of AgNO3. The physical fitness of the zebrafish, measured by novel tank diving test and swimming performance, decreased after 72 h incubation in 30 ppb of AgNO3. Exposure to 10 ppb of AgNO3 impaired social preference, social recognition, learning, and memory, but did not affect anxiety level, aggressiveness, and shoaling behavior. In situ hybridization of c-fos mRNA showed that AgNO3 treatment decreased neural activity in the brain areas crucial for learning, memory, and social behaviors, including the medial and dorsal zones of the dorsal telencephalic area. In conclusion, 72 h exposure to AgNO3 in a sublethal level impaired learning and social behaviors, indicating neurotoxicity in adult zebrafish.
Collapse
Affiliation(s)
- Chih-Wei Fu
- Department of Life Science, National Taiwan University, Taipei, Taiwan
| | - Jiun-Lin Horng
- Department of Anatomy and Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Sok-Keng Tong
- Department of Life Science, National Taiwan University, Taipei, Taiwan
| | - Bor-Wei Cherng
- Department of Life Science, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo 153-8902, Japan
| | - Bo-Kai Liao
- Department of Aquaculture, National Taiwan Ocean University, Keelung, Taiwan
| | - Li-Yih Lin
- Department of Life Science, School of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Ming-Yi Chou
- Department of Life Science, National Taiwan University, Taipei, Taiwan.
| |
Collapse
|
7
|
Abu Zeid EH, Khalifa BA, Said EN, Arisha AH, Reda RM. Neurobehavioral and immune-toxic impairments induced by organic methyl mercury dietary exposure in Nile tilapia Oreochromis niloticus. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2021; 230:105702. [PMID: 33264694 DOI: 10.1016/j.aquatox.2020.105702] [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: 09/22/2020] [Revised: 11/16/2020] [Accepted: 11/18/2020] [Indexed: 06/12/2023]
Abstract
Although substantial knowledge of mercury toxicity in fish has been assembled; until now, studies investigating the toxic impacts in Nile tilapia (Oreochromis niloticus) following dietary exposure to organic methyl mercury (MeHg) are less prolific. Accordingly, the current study aimed to evaluate the impacts of MeHg on neurobehavioral and immune integrity in Nile tilapia after dietary exposure. Two hundred and twenty-five juvenile Nile tilapia (19.99 ± 0.33 g) were allocated into five groups in triplicates (15 fish/replicate). G1, G2, G3, G4, and G5. O. niloticus were fed corresponding basal diets containing 0, 0.5, 1, 1.5, and 2 mg/kg diet MeHg chloride (MeHgCl) daily for 30 days, zero value represented the control G1 group. The results showed that MeHg induced significant alterations in O. niloticus behavior, the swimming behavior was significantly decreased, while scratching, biting, and fin tugging behaviors were significantly augmented. Moreover; chasing, mouth pushing, and butting behaviors were significantly increased in all the exposed groups. MeHg significantly decreased brain acetylcholine esterase (AChE) and serum immunoglobulin M (IgM) levels in all the exposed groups. Meanwhile, serum levels of lysozyme (LYZ), nitric oxide (NO), superoxide dismutase (SOD) malondialdehyde (MDA), protein carbonyl (PCO), and 8 hydroxy 2 deoxyguanosine (8OH2dG) were significantly elevated in all the exposed groups except for serum reduced glutathione (GSH) content was significantly decreased implying oxidative stress (OS), lipid peroxidation (LPO), protein, DNA damage and impaired immune response of the exposed tilapia. MeHg significantly altered transcriptional expression of immune-related genes including (TNF-α, IL-1β, and IL-8, and IL-10) in all the exposed groups. From the obtained outcomes, the present research is the premier to investigate that dietary MeHg exposure in O. niloticus significantly induced neurobehavioral and immune defense impairments in a dose-related manner. This study exhibits that dietary MeHg may pose a potential threat to the O. niloticus populations.
Collapse
Affiliation(s)
- Ehsan H Abu Zeid
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Zagazig University, El-Sharkia Province Zagazig 44511, Egypt.
| | - Bouthaina A Khalifa
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Cairo University, Cairo 12211, Egypt
| | - Enas N Said
- Department of Veterinary Public Health, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt
| | - Ahmed H Arisha
- Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt; Department of Animal Physiology and Biochemistry, Faculty of Veterinary Medicine, Badr University in Cairo (BUC), Badr City, Cairo, Egypt
| | - Rasha M Reda
- Department of Fish Diseases and Management, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
| |
Collapse
|
8
|
Ye X, Fisher NS. Minor effects of dietary methylmercury on growth and reproduction of the sheepshead minnow Cyprinodon variegatus and toxicity to their offspring. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115226. [PMID: 32698054 DOI: 10.1016/j.envpol.2020.115226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 06/30/2020] [Accepted: 07/09/2020] [Indexed: 06/11/2023]
Abstract
Methylmercury (MeHg) is a neurotoxic compound that is found in virtually all fish and biomagnifies in aquatic food webs. Although MeHg concentrations in marine and estuarine fish are often elevated, the impacts of MeHg on marine and estuarine fish have largely been understudied. To evaluate the impact of dietary MeHg on marine fish reproduction and effects on their offspring, female juvenile sheepshead minnows (Cyprinodon variegatus) at three months of age were experimentally exposed to MeHg-contaminated diets for two months and then paired with Hg-free males for spawning. Egg production, hatching success of embryos, time to hatching, survival of larvae, growth of larvae and swimming behavior of larvae were determined. Selenium (Se) was also measured and Se/Hg molar ratios were calculated to assess whether Se reduced MeHg toxicity. MeHg had no significant impact on fish reproduction or on survival and growth of larvae. Larvae produced by MeHg-exposed mothers had concentrations of Hg about 1 ppm (dry wt), or about 12% of that in the muscle of their mothers and consistently displayed 6-15% increased swimming speed relative to controls; the ecological significance of this moderate effect on swimming speed requires further study. The Se/Hg molar ratios in these fish, which were >1 in controls (adults and larvae) and MeHg-exposed larvae but <1 in Hg-exposed adults, did not correlate with MeHg effects. The sheepshead minnow, at a low trophic level, appears to have a high tolerance of MeHg; however, it can pass MeHg to higher trophic levels in marine ecosystems where upper level predators have MeHg concentrations sometimes exceeding US FDA safety limits of 1 ppm wet wt.
Collapse
Affiliation(s)
- Xiayan Ye
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, 11794-5000, USA.
| | - Nicholas S Fisher
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, 11794-5000, USA.
| |
Collapse
|
9
|
Bridges KN, Furin CG, Gerlach RF. Subsistence fish consumption in rural Alaska: Using regional monitoring data to evaluate risk and bioavailability of dietary methylmercury. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 736:139676. [PMID: 32497892 DOI: 10.1016/j.scitotenv.2020.139676] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 05/21/2020] [Accepted: 05/22/2020] [Indexed: 06/11/2023]
Abstract
On average, Alaskans in rural communities consume over three times the Federally recommended maximum weekly fish ingestion rate (IR), the overwhelming majority of which is Pacific salmon. Results of statewide monitoring efforts consistently show that Pacific salmon from Alaska have low concentrations of mercury, yet concerns regarding dietary exposure to methylmercury (MeHg) and other aquatic contaminants continue to contribute to declining subsistence fish consumption rates in rural communities. Therefore, the goal of the present study was to use statewide biomonitoring datasets and regional fish IRs to quantitatively evaluate potential risk from dietary MeHg exposure via subsistence consumption of salmon from Alaska. Hazard Indices (HIs) did not exceed 1 for any of the groups evaluated, indicating negligible risk for the average Alaskan subsistence consumer. Selenium health benefit values (HBVSe) of various fish species from AK were also calculated, with positive results for all commonly consumed subsistence species. Additionally, mercury concentrations in the hair of Alaskan women were evaluated as a proxy for dietary MeHg exposure. Results reveal that Alaskan women of childbearing age have substantially lower hair Hg concentrations than their counterparts in other large-scale biomonitoring studies, despite similar fish IRs. Collectively, results of the present study suggest that MeHg in Pacific salmon does not pose an unacceptable hazard for the average subsistence consumer in Alaska.
Collapse
Affiliation(s)
- Kristin N Bridges
- Alaska Division of Public Health, Section of Epidemiology, 3601 C Street Ste. 540, Anchorage, AK 99503, United States of America; Geosyntec Consultants, 3003 Minnesota Dr. Ste. 302, Anchorage, AK 99503, United States of America; Alaska Pacific University, 4101 University Dr., Anchorage, AK 99508, United States of America.
| | - Christoff G Furin
- Division of Environmental Health, Office of The State Veterinarian, 5251 Dr. MLK Jr. Ave., Anchorage, AK 99507, United States of America
| | - Robert F Gerlach
- Division of Environmental Health, Office of The State Veterinarian, 5251 Dr. MLK Jr. Ave., Anchorage, AK 99507, United States of America
| |
Collapse
|
10
|
Ribeiro RX, da Silva Brito R, Pereira AC, Monteiro KBES, Gonçalves BB, Rocha TL. Ecotoxicological assessment of effluents from Brazilian wastewater treatment plants using zebrafish embryotoxicity test: A multi-biomarker approach. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 735:139036. [PMID: 32493656 DOI: 10.1016/j.scitotenv.2020.139036] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 03/28/2020] [Accepted: 04/25/2020] [Indexed: 06/11/2023]
Abstract
Effluent from wastewater treatment plants (WWTPs) remains one of the major pollutants of aquatic environments; however, knowledge about its ecotoxic effects at fish early life stages is limited. The ecotoxicity of effluent from Brazilian WWTPs was herein analyzed based on responses of multiple biomarkers in the zebrafish embryotoxicity test (ZET). Ecotoxicity was analyzed based on mortality rate, hatching rate, spontaneous movement rate (neurotoxicity), heart rate (cardiotoxicity), frequency of morphological changes and morphometric parameters during 144 h exposure time. Results showed that embryos exposed to affluent and effluent presented high mortality rate and delayed hatching rate, as well as changes in morphometric parameters. Exposed embryos also showed physiological, sensory, skeletal and muscular changes, which confirms that the ecotoxic effect of WWTPs effluent is systemic and associated with the presence of several pollutants, even at low concentrations (mixture toxicity). The present study is pioneer in using responses of multiple biomarkers in ZET as suitable approach to assess the ecotoxicity of WWTPs effluent in developing countries, as well as to add value and contribute to studies on WWTPs worldwide. Zebrafish is a suitable vertebrate model to assess the ecotoxicity of WWTP effluent.
Collapse
Affiliation(s)
- Renan Xavier Ribeiro
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Rafaella da Silva Brito
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Aryelle Canedo Pereira
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Keyle Borges E Silva Monteiro
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Goiás, Brazil; Companhia Saneamento de Goiás (SANEAGO), Goiânia, Goiás, Brazil
| | - Bruno Bastos Gonçalves
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Thiago Lopes Rocha
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Goiás, Brazil.
| |
Collapse
|
11
|
Yang L, Zhang Y, Wang F, Luo Z, Guo S, Strähle U. Toxicity of mercury: Molecular evidence. CHEMOSPHERE 2020; 245:125586. [PMID: 31881386 DOI: 10.1016/j.chemosphere.2019.125586] [Citation(s) in RCA: 173] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 11/28/2019] [Accepted: 12/08/2019] [Indexed: 05/25/2023]
Abstract
Minamata disease in Japan and the large-scale poisoning by methylmercury (MeHg) in Iraq caused wide public concerns about the risk emanating from mercury for human health. Nowadays, it is widely known that all forms of mercury induce toxic effects in mammals, and increasing evidence supports the concern that environmentally relevant levels of MeHg could impact normal biological functions in wildlife. The information of mechanism involved in mercurial toxicity is growing but knowledge gaps still exist between the adverse effects and mechanisms of action, especially at the molecular level. A body of data obtained from experimental studies on mechanisms of mercurial toxicity in vivo and in vitro points to that disruption of the antioxidant system may play an important role in the mercurial toxic effects. Moreover, the accumulating evidence indicates that signaling transduction, protein or/and enzyme activity, and gene regulation are involving in mediating toxic and adaptive response to mercury exposure. We conducted here a comprehensive review of mercurial toxic effects on wildlife and human, in particular synthesized key findings of molecular pathways involved in mercurial toxicity from the cells to human. We discuss the molecular evidence related mercurial toxicity to the adverse effects, with particular emphasis on the gene regulation. The further studies relying on Omic analysis connected to adverse effects and modes of action of mercury will aid in the evaluation and validation of causative relationship between health outcomes and gene expression.
Collapse
Affiliation(s)
- Lixin Yang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012, Beijing, China; Center for Global Health, School of Public Health, Nanjing Medical University, 211166, Nanjing, China.
| | - Yuanyuan Zhang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012, Beijing, China
| | - Feifei Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012, Beijing, China
| | - Zidie Luo
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012, Beijing, China
| | - Shaojuan Guo
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012, Beijing, China
| | - Uwe Strähle
- Toxicology and Genetics, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| |
Collapse
|
12
|
Baldissera MD, Souza CF, da Silva AS, Henn AS, Flores EMM, Baldisserotto B. Diphenyl diselenide dietary supplementation alleviates behavior impairment and brain damage in grass carp (Ctenopharyngodon idella) exposed to methylmercury chloride. Comp Biochem Physiol C Toxicol Pharmacol 2020; 229:108674. [PMID: 31760078 DOI: 10.1016/j.cbpc.2019.108674] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 11/14/2019] [Accepted: 11/20/2019] [Indexed: 12/11/2022]
Abstract
Mercury (Hg) induces neurobehavioral disorders through reactive oxygen species (ROS) elevation and impairment of brain key enzyme activities. Nevertheless, the therapeutic and toxic selenium concentrations for fish are very close; diphenyl diselenide (Ph2Se2), an organoselenium compound with neuroprotective effects, may be an alternative to elemental Se. Therefore, the aim of this study was to determine whether dietary supplementation with Ph2Se2 prevented or reduced the neurobehavioral alterations and oxidative damage elicited by CH3HgCl in grass carp Ctenopharyngodon idella. Fish exposed to CH3HgCl exhibited significantly reduced distance travelled and swimming speed compared to the control group, as well as augmented cortisol and ROS levels and xanthine oxidase (XO) activities. CH3HgCl exposure significantly increased lipid peroxidation (LOOH) and protein carbonylation (PC) levels compared to those of the control group, while acetylcholinesterase (AChE) and sodium-potassium pump (Na+, K+-ATPase) activities were inhibited. Dietary supplementation with 3 mg/kg Ph2Se2 ameliorated locomotor activity impairment and prevented the augmented brain cortisol and ROS levels as well as XO activity. The supplement reduced lipid and protein damage elicited by CH3HgCl and exerted protective effects on brain AChE and Na+, K+-ATPase activities. Exposure to an environmental concentration of CH3HgCl elicited neurobehavioral alterations linked to reduced locomotor activity, a finding that can be explained by oxidative damage and reduced activity of AChE and Na+, K+-ATPase in telencephalon and mesencephalon structures. Dietary supplementation with Ph2Se2 prevented CH3HgCl-induced locomotor impairment. This effect appeared to be mediated by antioxidant action. Ph2Se2 may be a viable approach to prevention or reduction CH3HgCl-mediated neurotoxic effects.
Collapse
Affiliation(s)
- Matheus D Baldissera
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
| | - Carine F Souza
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Aleksandro S da Silva
- Department of Animal Science, Universidade do Estado de Santa Catarina, Chapecó, SC, Brazil
| | - Alessandra S Henn
- Department of Chemistry, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Erico M M Flores
- Department of Chemistry, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Bernardo Baldisserotto
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| |
Collapse
|
13
|
Bridges KN, Magnuson JT, Curran TE, Barker A, Roberts AP, Venables BJ. Alterations to the vision-associated transcriptome of zebrafish (Danio rerio) following developmental norethindrone exposure. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2019; 69:137-142. [PMID: 31071662 DOI: 10.1016/j.etap.2019.04.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 04/29/2019] [Indexed: 06/09/2023]
Abstract
Synthetic sex steroids, like the synthetic progestin norethindrone (NET), can affect a wide variety of biological processes via highly conserved mechanisms. NET is prevalent in surface waters, yet the sub-lethal effects of NET exposure are not are net yet well characterized in aquatic biota. A few targeted gene expression and behavioral studies have concluded that NET affects the vision of adult fish; however, early life stage (ELS) fish are often more sensitive to contaminants. Furthermore, many species of fish rely heavily on visual perception for survival during development. The goal of the present study was to characterize the effects of developmental exposure to environmentally relevant concentrations of NET on the visual system of ELS zebrafish, using transcriptomics and histological methods. Results indicate that exposure to relatively low levels of NET in aquatic systems may be sufficient to affect the visual function of developing fish.
Collapse
Affiliation(s)
- Kristin N Bridges
- Dept. of Biological Sciences, University of North Texas, 1155 Union Circle, Denton, TX 76203, United States.
| | - Jason T Magnuson
- Dept. of Biological Sciences, University of North Texas, 1155 Union Circle, Denton, TX 76203, United States
| | - Thomas E Curran
- Dept. of Biological Sciences, University of North Texas, 1155 Union Circle, Denton, TX 76203, United States
| | - Andrew Barker
- Dept. of Biological Sciences, University of North Texas, 1155 Union Circle, Denton, TX 76203, United States
| | - Aaron P Roberts
- Dept. of Biological Sciences, University of North Texas, 1155 Union Circle, Denton, TX 76203, United States
| | - Barney J Venables
- Dept. of Biological Sciences, University of North Texas, 1155 Union Circle, Denton, TX 76203, United States
| |
Collapse
|
14
|
Chen D, Huang C, Chen Z. A review for the pharmacological effect of lycopene in central nervous system disorders. Biomed Pharmacother 2019; 111:791-801. [DOI: 10.1016/j.biopha.2018.12.151] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 12/31/2018] [Accepted: 12/31/2018] [Indexed: 12/13/2022] Open
|
15
|
Pereira P, Korbas M, Pereira V, Cappello T, Maisano M, Canário J, Almeida A, Pacheco M. A multidimensional concept for mercury neuronal and sensory toxicity in fish - From toxicokinetics and biochemistry to morphometry and behavior. Biochim Biophys Acta Gen Subj 2019; 1863:129298. [PMID: 30768958 DOI: 10.1016/j.bbagen.2019.01.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 01/16/2019] [Accepted: 01/30/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Neuronal and sensory toxicity of mercury (Hg) compounds has been largely investigated in humans/mammals with a focus on public health, while research in fish is less prolific and dispersed by different species. Well-established premises for mammals have been governing fish research, but some contradictory findings suggest that knowledge translation between these animal groups needs prudence [e.g. the relative higher neurotoxicity of methylmercury (MeHg) vs. inorganic Hg (iHg)]. Biochemical/physiological differences between the groups (e.g. higher brain regeneration in fish) may determine distinct patterns. This review undertakes the challenge of identifying sensitive cellular targets, Hg-driven biochemical/physiological vulnerabilities in fish, while discriminating specificities for Hg forms. SCOPE OF REVIEW A functional neuroanatomical perspective was conceived, comprising: (i) Hg occurrence in the aquatic environment; (ii) toxicokinetics on central nervous system (CNS)/sensory organs; (iii) effects on neurotransmission; (iv) biochemical/physiological effects on CNS/sensory organs; (v) morpho-structural changes on CNS/sensory organs; (vi) behavioral effects. The literature was also analyzed to generate a multidimensional conceptualization translated into a Rubik's Cube where key factors/processes were proposed. MAJOR CONCLUSIONS Hg neurosensory toxicity was unequivocally demonstrated. Some correspondence with toxicity mechanisms described for mammals (mainly at biochemical level) was identified. Although the research has been dispersed by numerous fish species, 29 key factors/processes were pinpointed. GENERAL SIGNIFICANCE Future trends were identified and translated into 25 factors/processes to be addressed. Unveiling the neurosensory toxicity of Hg in fish has a major motivation of protecting ichtyopopulations and ecosystems, but can also provide fundamental knowledge to the field of human neurodevelopment.
Collapse
Affiliation(s)
- Patrícia Pereira
- Department of Biology and CESAM, University of Aveiro, Aveiro 3810-193, Portugal
| | - Malgorzata Korbas
- Science Division, Canadian Light Source Inc., Saskatoon, Canada; Department of Anatomy and Cell Biology, University of Saskatchewan, Saskatoon, Canada
| | - Vitória Pereira
- Department of Biology and CESAM, University of Aveiro, Aveiro 3810-193, Portugal
| | - Tiziana Cappello
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d'Alcontres 31, Messina 98166, Italy
| | - Maria Maisano
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d'Alcontres 31, Messina 98166, Italy
| | - João Canário
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
| | - Armando Almeida
- Life and Health Sciences Research Institute (ICVS), School of Medicine (EM), University of Minho, Campus of Gualtar, Braga 4750-057, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Portugal
| | - Mário Pacheco
- Department of Biology and CESAM, University of Aveiro, Aveiro 3810-193, Portugal.
| |
Collapse
|
16
|
Afolabi BA, Adedara IA, Souza DO, Rocha JBT. Dietary co-exposure to methylmercury and monosodium glutamate disrupts cellular and behavioral responses in the lobster cockroach, Nauphoeta cinerea model. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 64:70-77. [PMID: 30300794 DOI: 10.1016/j.etap.2018.09.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 09/03/2018] [Accepted: 09/12/2018] [Indexed: 06/08/2023]
Abstract
The present study aims to investigate the effect of monosodium glutamate (MSG) both separately and combined with a low dose of methylmercury (MeHg) on behavioral and biochemical parameters in Nauphoeta cinerea (lobster cockroach). Cockroaches were fed with the basal diet alone, basal diet + 2% NaCl, basal diet + 2% MSG; basal diet + 0.125 mg/g MeHg, basal diet + 0.125 mg/g MeHg + 2% NaCl; and basal diet + 0.125 mg/g MeHg + 2% MSG for 21 days. Behavioral parameters such as distance traveled, immobility and turn angle were automatically measured using ANY-maze video tracking software (Stoelting, CO, USA). Biochemical end-points such as acetylcholinesterase (AChE), glutathione-S-transferase (GST), total thiol and TBARS were also evaluated. Results show that MeHg + NaCl, increased distance traveled while MeHg + MSG increased time immobile. AChE activity was significantly reduced in cockroaches across all the groups when compared to the control. There was no significant alteration in GST activity and total thiol levels. It could be that both NaCl and MSG potentiates the neurotoxic effect of MeHg in cockroaches.
Collapse
Affiliation(s)
- Blessing A Afolabi
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas (CCNE), Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil; Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2600-Anexo, 90035-003 Porto Alegre, RS, Brazil; Department of Biochemistry, Bowen University Iwo, Osun State, Nigeria
| | - Isaac A Adedara
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Diogo O Souza
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2600-Anexo, 90035-003 Porto Alegre, RS, Brazil
| | - João B T Rocha
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas (CCNE), Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil.
| |
Collapse
|
17
|
Nielsen KM, Zhang Y, Curran TE, Magnuson JT, Venables BJ, Durrer KE, Allen MS, Roberts AP. Alterations to the Intestinal Microbiome and Metabolome of Pimephales promelas and Mus musculus Following Exposure to Dietary Methylmercury. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:8774-8784. [PMID: 29943971 DOI: 10.1021/acs.est.8b01150] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Mercury is a global contaminant, which may be microbially transformed into methylmercury (MeHg), which bioaccumulates. This results in potentially toxic body burdens in high trophic level organisms in aquatic ecosystems and maternal transfer to offspring. We previously demonstrated effects on developing fish including hyperactivity, altered time-to-hatch, reduced survival, and dysregulation of the dopaminergic system. A link between gut microbiota and central nervous system function in teleosts has been established with implications for behavior. We sequenced gut microbiomes of fathead minnows exposed to dietary MeHg to determine microbiome effects. Dietary exposures were repeated with adult CD-1 mice. Metabolomics was used to screen for metabolome changes in mouse brain and larval fish, and results indicate effects on lipid metabolism and neurotransmission, supported by microbiome data. Findings suggest environmentally relevant exposure scenarios may cause xenobiotic-mediated dysbiosis of the gut microbiome, contributing to neurotoxicity. Furthermore, small-bodied teleosts may be a useful model species for studying certain types of neurodegenerative diseases, in lieu of higher vertebrates.
Collapse
Affiliation(s)
- Kristin M. Nielsen
- Department of Biological Sciences and Advanced Environmental Research Institute , University of North Texas , 1155 Union Circle , Denton , Texas 76203 , United States
| | - Yan Zhang
- Department of Microbiology, Immunology and Genetics , University of North Texas Health Science Center , 3500 Camp Bowie Blvd. , Fort Worth , Texas 76107 , United States
| | - Thomas E Curran
- Department of Biological Sciences and Advanced Environmental Research Institute , University of North Texas , 1155 Union Circle , Denton , Texas 76203 , United States
| | - Jason T Magnuson
- Department of Biological Sciences and Advanced Environmental Research Institute , University of North Texas , 1155 Union Circle , Denton , Texas 76203 , United States
| | - Barney J Venables
- Department of Biological Sciences and Advanced Environmental Research Institute , University of North Texas , 1155 Union Circle , Denton , Texas 76203 , United States
| | - Katherine E Durrer
- Department of Microbiology, Immunology and Genetics , University of North Texas Health Science Center , 3500 Camp Bowie Blvd. , Fort Worth , Texas 76107 , United States
| | - Michael S Allen
- Department of Microbiology, Immunology and Genetics , University of North Texas Health Science Center , 3500 Camp Bowie Blvd. , Fort Worth , Texas 76107 , United States
| | - Aaron P Roberts
- Department of Biological Sciences and Advanced Environmental Research Institute , University of North Texas , 1155 Union Circle , Denton , Texas 76203 , United States
| |
Collapse
|
18
|
Green AJ, Planchart A. The neurological toxicity of heavy metals: A fish perspective. Comp Biochem Physiol C Toxicol Pharmacol 2018; 208:12-19. [PMID: 29199130 PMCID: PMC5936656 DOI: 10.1016/j.cbpc.2017.11.008] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 11/22/2017] [Accepted: 11/23/2017] [Indexed: 12/11/2022]
Abstract
The causes of neurodegenerative diseases are complex with likely contributions from genetic susceptibility and environmental exposures over an organism's lifetime. In this review, we examine the role that aquatic models, especially zebrafish, have played in the elucidation of mechanisms of heavy metal toxicity and nervous system function over the last decade. Focus is applied to cadmium, lead, and mercury as significant contributors to central nervous system morbidity, and the application of numerous transgenic zebrafish expressing fluorescent reporters in specific neuronal populations or brain regions enabling high-resolution neurodevelopmental and neurotoxicology research.
Collapse
MESH Headings
- Animals
- Animals, Genetically Modified
- Behavior, Animal/drug effects
- Disease Models, Animal
- Gene Expression Regulation, Developmental/drug effects
- Heavy Metal Poisoning, Nervous System/etiology
- Heavy Metal Poisoning, Nervous System/genetics
- Heavy Metal Poisoning, Nervous System/metabolism
- Heavy Metal Poisoning, Nervous System/pathology
- Humans
- Metals, Heavy/toxicity
- Nerve Degeneration
- Nervous System/drug effects
- Nervous System/metabolism
- Nervous System/pathology
- Nervous System/physiopathology
- Neurons/drug effects
- Neurons/metabolism
- Neurons/pathology
- Risk Assessment
- Water Pollutants, Chemical/toxicity
- Zebrafish/genetics
- Zebrafish/metabolism
Collapse
Affiliation(s)
- Adrian J Green
- Graduate Program in Toxicology, North Carolina State University, Raleigh, NC 27695, United States; Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695, United States
| | - Antonio Planchart
- Graduate Program in Toxicology, North Carolina State University, Raleigh, NC 27695, United States; Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695, United States; Center for Human Health and the Environment, North Carolina State University, Raleigh, NC 27695, United States; W. M. Keck Center for Behavioral Biology, North Carolina State University, Raleigh, NC 27695, United States.
| |
Collapse
|
19
|
Mora-Zamorano F, Klingler R, Basu N, Head J, Murphy CA, Binkowski FP, Larson JK, Carvan MJ. Developmental Methylmercury Exposure Affects Swimming Behavior and Foraging Efficiency of Yellow Perch ( Perca flavescens) Larvae. ACS OMEGA 2017; 2:4870-4877. [PMID: 28884165 PMCID: PMC5579541 DOI: 10.1021/acsomega.7b00227] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 07/25/2017] [Indexed: 05/20/2023]
Abstract
Methylmercury (MeHg) is a pervasive and ubiquitous environmental neurotoxicant within aquatic ecosystems, known to alter behavior in fish and other vertebrates. This study sought to assess the behavioral effects of developmental MeHg exposure on larval yellow perch (Perca flavescens)-a nonmodel fish species native to the Great Lakes. Embryos were exposed to MeHg (0, 30, 100, 300, and 1000 nM) for 20 h and then reared to 25 days post fertilization (dpf) for analyses of spontaneous swimming, visual motor response (VMR), and foraging efficiency. MeHg exposures rendered total mercury (THg) body burdens of 0.02, 0.21, 0.95, 3.14, and 14.93 μg/g (wet weight). Organisms exposed to 1000 nM exhibited high mortality; thus, they were excluded from downstream behavioral analyses. All MeHg exposures tested were associated with a reduction in spontaneous swimming at 17 and 25 dpf. Exposure to 30 and 100 nM MeHg caused altered locomotor output during the VMR assay at 21 dpf, whereas exposure to 100 nM MeHg was associated with decreased foraging efficiency at 25 dpf. For the sake of comparison, the second-lowest exposure tested here rendered a THg burden that represents the permissible level of consumable fish in the United States. Moreover, this dose is reported in roughly two-thirds of consumable fish species monitored in the United States, according to the Food and Drug Administration. Although the THg body burdens reported here were higher than expected in the environment, our study is the first to analyze the effects of MeHg exposure on fundamental survival behaviors of yellow perch larvae and advances in the exploration of the ecological relevance of behavioral end points.
Collapse
Affiliation(s)
- Francisco
X. Mora-Zamorano
- School
of Freshwater Sciences, University of Wisconsin
at Milwaukee, 600 E Greenfield
Avenue, Milwaukee, Wisconsin 53204, United States
| | - Rebekah Klingler
- School
of Freshwater Sciences, University of Wisconsin
at Milwaukee, 600 E Greenfield
Avenue, Milwaukee, Wisconsin 53204, United States
| | - Niladri Basu
- Department
of Natural Resource Sciences, McGill University, 845 Sherbrooke Street W, Sainte-Anne-de-Bellevue, Quebec H9X 3V9, Canada
| | - Jessica Head
- Department
of Natural Resource Sciences, McGill University, 845 Sherbrooke Street W, Sainte-Anne-de-Bellevue, Quebec H9X 3V9, Canada
| | - Cheryl A. Murphy
- Department
of Fisheries and Wildlife, Michigan State
University, 220 Trowbridge
Road, East Lansing, Michigan 48824, United States
| | - Frederick P. Binkowski
- School
of Freshwater Sciences, University of Wisconsin
at Milwaukee, 600 E Greenfield
Avenue, Milwaukee, Wisconsin 53204, United States
| | - Jeremy K. Larson
- School
of Freshwater Sciences, University of Wisconsin
at Milwaukee, 600 E Greenfield
Avenue, Milwaukee, Wisconsin 53204, United States
| | - Michael J. Carvan
- School
of Freshwater Sciences, University of Wisconsin
at Milwaukee, 600 E Greenfield
Avenue, Milwaukee, Wisconsin 53204, United States
- E-mail: . Tel: +1(414)-382-1700. Fax: +1(414)-382-1705
| |
Collapse
|
20
|
Farina M, Aschner M. Methylmercury-Induced Neurotoxicity: Focus on Pro-oxidative Events and Related Consequences. ADVANCES IN NEUROBIOLOGY 2017; 18:267-286. [DOI: 10.1007/978-3-319-60189-2_13] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|