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Cited by 0Mercury impact and mitigation studiesEnvironmental Toxicology and EcotoxicologyComputational Drug Discovery Methods

The DOI matches its Crossref record; 110 of the 110 references it cites were found in a registry or an index.

Integrative network-based construction of ecologically relevant computational adverse outcome pathways for organic mercury-induced toxicity

Madgaonkar, Shreyes Rajan, Chivukula, Nikhil, Garisetti, Vasavi, Marigoudar, Shambanagouda Rudragouda, Sharma, Krishna Venkatarama, Samal, Areejit·2026·Environmental Toxicology and Chemistry

Published version of a preprint

Abstract

Adverse outcome pathways (AOPs) describe mechanisms of toxicity by connecting molecular events with outcomes at higher levels of biological organization. Computational AOPs (cAOPs), constructed using existing toxicological data, can accelerate the early stages of AOP development, which is often a time-consuming and resource-intensive process. In this study, an integrative network-based framework was developed to construct cAOPs, with a particular focus on elucidating the toxicity of organic mercury in fish. First, 124 organic mercury compounds, associated fish toxicity endpoints, and proteins were curated from the Comparative Toxicogenomics Database and ECOTOX database, followed by molecular docking to identify novel interactions with 16 zebrafish protein orthologs. Subsequently, toxicity endpoints and identified molecular interactions were standardized and harmonized using established ontologies and AOP-Wiki. These data were integrated with event relationship information from AOP-Wiki and published literature to construct an organic mercury-associated toxicity network, comprising 197 nodes and 243 edges, which was subsequently filtered using AOP definition-based criteria to identify biologically relevant pathways. Further, these pathways were ranked based on their novelty with respect to existing AOPs in AOP-Wiki, resulting in the proposal of four novel cAOPs describing glutathione peroxidase binding or altered metallothionein levels leading to neurological manifestations or dysbiosis in fish. Overall, this study presents an integrative network-based framework for constructing cAOPs applicable to diverse contaminants and species, supporting new approach methodologies for toxicological risk assessment.

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Crossref · 10.1093/etojnl/vgag026

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Cites

Research works printed but not linked: 5

  1. Fournie, 2002, Histopathological evidence of regeneration following hepatotoxic effects of the cyanotoxin microcystin-LR in the hardhead catfish and gulf killifish, Journal of Aquatic Animal Health, 14, 273, 10.1577/1548-8667(2002)014<0273:HEORFH>2.0.CO;2 · DOI
  2. Hagberg, 2008, Proceedings of the 7th Python in Science Conference (SciPy 2008), 11
  3. International Resource Panel, 2021, Governing coastal resources: Implications for a sustainable blue economy
  4. Organisation for Economic Co-operation and Development, 2022, Users’ Handbook Supplement to the Guidance Document for Developing and Assessing AOPs, Series on Testing and Assessment No. 233, OECD Publishing, Paris
  5. United Nations Environment Programme, 2019, Global Mercury Assessment 2018

Metadata

Authors
Madgaonkar, S. R., Chivukula, N., Garisetti, V., Marigoudar, S. R., Sharma, K. V., & Samal, A.
Affiliations
  • Homi Bhabha National Institute (IN)
  • Institute of Mathematical Sciences (IN)
  • Government of India (IN)
Corresponding author
Samal, Areejit
Venue
Environmental Toxicology and Chemistry
Published
2026-01-28
Volume
45
Issue
3
Pages
731-747
ISSN
  • 0730-7268 (ISSN-L)
  • 1552-8618
OpenAlex
W7125951084
Cited by
0
References
110
FWCI
0.00
Type
journal article
Language
en
Open access
closed
Locations
  • Environmental Toxicology and Chemistry (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed (publishedVersion)
Funders
  • Department of Atomic Energy
  • The Institute of Mathematical Sciences
  • Marine Ecotoxicology and Ecological Risk Assessment
  • (MEERA) Programme (MoES/OSMART/EFC/2021)
Topics
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Mercury impact and mitigation studies
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Environmental Toxicology and Ecotoxicology
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Drug Discovery › Computational Drug Discovery Methods
Keywords
adverse outcome pathways, organic mercury, fish toxicity, zebrafish, molecular docking, glutathione peroxidase, metallothionein, neurotoxicity, dysbiosis, AOP-Wiki, new approach methodologies, toxicological risk assessment, Comparative Toxicogenomics Database
MeSH terms
Adverse Outcome Pathways, Animals, Mercury, Organomercury Compounds, Water Pollutants, Chemical, Zebrafish, Mercury Compounds, Molecular Docking Simulation

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