1
|
Atheena Amar K, Ramachandran B. ENVIRONMENTAL STRESSORS DIFFERENTIALLY MODULATE ANXIETY-LIKE BEHAVIOUR IN MALE AND FEMALE ZEBRAFISH. Behav Brain Res 2023; 450:114470. [PMID: 37148914 DOI: 10.1016/j.bbr.2023.114470] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 03/05/2023] [Accepted: 03/16/2023] [Indexed: 05/08/2023]
Abstract
How differently male and female responds in a stressful situation is a matter of curiosity. Apart from curiosity, this opens a new arena to the synthesis of personalized/individualized medications. Here, we used zebrafish, a suitable experimental animal model to study stress and anxiety. We evaluated the differential responses in adult male and female zebrafish on the acute exposure of three different stressors: Caffeine (100mg/L), Conspecific alarm substance (3.5ml/L), and sight of sympatric predators (Leaf fish and Snakehead) with the help of two different behavioural paradigms (Novel tank test & Predator exposure). Behavioural responses were captured over 6minutes and quantified using Smart 3.0. Male zebrafish were found to be more responsive to caffeine treatment. Conspecific alarm substance-challenged males and females showed robust alarm reactions whereas females were found to be more prone to it. Female zebrafish showed statistically significant aversion to the visual representation of sympatric predators. Taken together, each stressor induced differential responses in male and female zebrafish.
Collapse
Affiliation(s)
- K Atheena Amar
- Neuronal Plasticity Group, Department of Zoology, University of Calicut, Thenhipalam, Malappuram, Kerala-673635, India
| | - Binu Ramachandran
- Neuronal Plasticity Group, Department of Zoology, University of Calicut, Thenhipalam, Malappuram, Kerala-673635, India.
| |
Collapse
|
2
|
Brix KV, De Boeck G, Baken S, Fort DJ. Adverse Outcome Pathways for Chronic Copper Toxicity to Fish and Amphibians. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2022; 41:2911-2927. [PMID: 36148934 PMCID: PMC9828004 DOI: 10.1002/etc.5483] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/22/2022] [Accepted: 09/15/2022] [Indexed: 05/28/2023]
Abstract
In the present review, we synthesize information on the mechanisms of chronic copper (Cu) toxicity using an adverse outcome pathway framework and identify three primary pathways for chronic Cu toxicity: disruption of sodium homeostasis, effects on bioenergetics, and oxidative stress. Unlike acute Cu toxicity, disruption of sodium homeostasis is not a driving mechanism of chronic toxicity, but compensatory responses in this pathway contribute to effects on organism bioenergetics. Effects on bioenergetics clearly contribute to chronic Cu toxicity with impacts at multiple lower levels of biological organization. However, quantitatively translating these impacts into effects on apical endpoints such as growth, amphibian metamorphosis, and reproduction remains elusive and requires further study. Copper-induced oxidative stress occurs in most tissues of aquatic vertebrates and is clearly a significant driver of chronic Cu toxicity. Although antioxidant responses and capacities differ among tissues, there is no clear indication that specific tissues are more sensitive than others to oxidative stress. Oxidative stress leads to increased apoptosis and cellular damage in multiple tissues, including some that contribute to bioenergetic effects. This also includes oxidative damage to tissues involved in neuroendocrine axes and this damage likely alters the normal function of these tissues. Importantly, Cu-induced changes in hormone concentrations and gene expression in endocrine-mediated pathways such as reproductive steroidogenesis and amphibian metamorphosis are likely the result of oxidative stress-induced tissue damage and not endocrine disruption. Overall, we conclude that oxidative stress is likely the primary driver of chronic Cu toxicity in aquatic vertebrates, with bioenergetic effects and compensatory response to disruption of sodium homeostasis contributing to some degree to observed effects on apical endpoints. Environ Toxicol Chem 2022;41:2911-2927. © 2022 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
Collapse
Affiliation(s)
- Kevin V. Brix
- EcoToxMiamiFloridaUSA
- Rosenstiel School of Marine, Atmospheric, and Earth Sciences, Department of Marine Biology and EcologyUniversity of MiamiMiamiFloridaUSA
| | | | | | | |
Collapse
|
3
|
Langa X, Neuhaus P, Lains D, Stewart TJ, Borel N, Certal AC, Monteiro JF, Aleström P, Diaz E, Piragyte I, Bräutigam L, Vázquez R, Hlushchuk R, Gfeller L, Mestrot A, Bigalke M, Varga ZM, Mercader N. A Systematic Analysis of Metal and Metalloid Concentrations in Eight Zebrafish Recirculating Water Systems. Zebrafish 2021; 18:252-264. [PMID: 34227897 PMCID: PMC8392081 DOI: 10.1089/zeb.2020.1970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Metals and metalloids are integral to biological processes and play key roles in physiology and metabolism. Nonetheless, overexposure to some metals or lack of others can lead to serious health consequences. In this study, eight zebrafish facilities collaborated to generate a multielement analysis of their centralized recirculating water systems. We report a first set of average concentrations for 46 elements detected in zebrafish facilities. Our results help to establish an initial baseline for trouble-shooting purposes, and in general for safe ranges of metal concentrations in recirculating water systems, supporting reproducible scientific research outcomes with zebrafish.
Collapse
Affiliation(s)
- Xavier Langa
- Division Developmental Biology and Regeneration, Institute of Anatomy, Institute of Geography, University of Bern, Bern, Switzerland
| | - Patrick Neuhaus
- Laboratory/Soil Science, Institute of Geography, University of Bern, Bern, Switzerland
| | - David Lains
- Zebrafish International Resource Center, University of Oregon, Oregon, USA
| | - Theodora J Stewart
- London Metallomics Facility, King's College London and Imperial College London, London, United Kingdom
| | - Nadine Borel
- European Zebrafish Resource Center, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, Germany
| | - Ana C Certal
- Fish Platform, Champalimaud Center for the Unknown, Lisboa, Portugal
| | - Joana F Monteiro
- Fish Platform, Champalimaud Center for the Unknown, Lisboa, Portugal
| | - Peter Aleström
- Department of Basic Science and Aquatic Medicine, Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences (NMBU), Oslo, Norway
| | - Eduardo Diaz
- Centro Nacional de Investigaciones Cardiovasculares CNIC, Madrid, Spain
| | - Indre Piragyte
- Division Developmental Biology and Regeneration, Institute of Anatomy, Institute of Geography, University of Bern, Bern, Switzerland
| | - Lars Bräutigam
- Comparative Medicine, Zebrafish Core Facility, Karolinska Institutet, Stockholm, Sweden
| | | | - Ruslan Hlushchuk
- Division microCT, Institute of Anatomy, University of Bern, Bern, Switzerland
| | - Lorenz Gfeller
- Laboratory/Soil Science, Institute of Geography, University of Bern, Bern, Switzerland
| | - Adrien Mestrot
- Laboratory/Soil Science, Institute of Geography, University of Bern, Bern, Switzerland
| | - Moritz Bigalke
- Laboratory/Soil Science, Institute of Geography, University of Bern, Bern, Switzerland
| | - Zoltan M Varga
- Zebrafish International Resource Center, University of Oregon, Oregon, USA
| | - Nadia Mercader
- Division Developmental Biology and Regeneration, Institute of Anatomy, Institute of Geography, University of Bern, Bern, Switzerland
| |
Collapse
|