Toxic Effects of Emerging Pollutants on Aquatic Organisms and Human

A special issue of Toxics (ISSN 2305-6304). This special issue belongs to the section "Emerging Contaminants".

Deadline for manuscript submissions: 23 June 2026 | Viewed by 2216

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Center for Environmental and Human Toxicology & Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, 2187 Mowry Rd. Bldg 471, P.O. Box 110885, Gainesville, FL 32611, USA
Interests: molecular toxicology; omics; environmental science; neurodegeneration; high-throughput in vitro screening; neurotoxicology
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Special Issue Information

Dear Colleagues,

Freshwater and marine species are uniquely exposed to emerging chemicals of concern through sewage effluent, run-off, and improper disposal of waste. In addition, drinking water containing chemicals is also a concern for human consumption and exposure. These environmental pollutants include a myriad of chemicals used in both aquaculture and agriculture, as well as products generated by industry. This Special Issue highlights the biological effects of novel insecticides, herbicides, product additives, plasticizers and plastic, and pharmaceuticals on aquatic animals and humans.  Studies that report on molecular (omics, computational biology), physiological, biochemical, behavioral, and morphological effects are encouraged.

Prof. Dr. Christopher Martyniuk
Guest Editor

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Keywords

  • emerging contaminants
  • aquatics
  • human
  • molecular
  • biochemical
  • behavioral

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Published Papers (2 papers)

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Research

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32 pages, 3103 KB  
Article
The Invasive Blue Crab Callinectes sapidus as a Model for Assessing Sub-Lethal Effects of Polyvinyl Alcohol
by Alessandra Maganza, Giorgia Zicarelli, Giuseppe Esposito, Annalisa Cotugno, Alice Gabetti, Camilla Mossotto, Alessia Merialdi, Francesca Provenza, Serena Anselmi, Marzia Pezzolato, Elena Bozzetta, Monia Renzi, Marino Prearo, Caterina Faggio, Edoardo Turolla, Antonia Concetta Elia and Paolo Pastorino
Toxics 2026, 14(5), 358; https://doi.org/10.3390/toxics14050358 - 24 Apr 2026
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Abstract
Polyvinyl alcohols (PVAs) are synthetic, water-soluble polymers widely used in industrial, medical, and personal care products. Their slow biodegradation raises concerns about potential impacts on marine ecosystems. This study examined how PVA exposure affects the blue crab Callinectes sapidus, an invasive species [...] Read more.
Polyvinyl alcohols (PVAs) are synthetic, water-soluble polymers widely used in industrial, medical, and personal care products. Their slow biodegradation raises concerns about potential impacts on marine ecosystems. This study examined how PVA exposure affects the blue crab Callinectes sapidus, an invasive species in the Mediterranean Sea. Crabs were exposed to three PVA concentrations (0.5, 5, and 25 mg L−1) along with a control group, for periods of 10 and 20 days. Oxidative stress was assessed by measuring antioxidant enzyme activities, including superoxide dismutase (SOD), glutathione S-transferase (GST), glutathione peroxidase (GPx), and lipid peroxidation levels in muscle, gill, and hepatopancreas. Cell viability in the hemolymph and hepatopancreas was also evaluated. The results showed that hepatopancreas cells were more sensitive than hemolymph cells. Oxidative stress increased with exposure time and concentration, as indicated by elevated antioxidant enzyme activity and lipid peroxidation. After 10 days, early detoxification responses were observed, while after 20 days of exposure, clear dose- and time-dependent trends were evident, highlighting an intensification of physiological dysfunctions with increasing PVA concentrations and prolonged exposure duration. The histopathological observations showed limited alterations in muscle and hepatopancreas tissue but evident structural changes in gill tissues, particularly after prolonged exposure. The findings reveal a concentration- and time-dependent biological response to PVA, highlighting physiological changes at higher exposure levels and the need for further research on environmental consequences. Full article
(This article belongs to the Special Issue Toxic Effects of Emerging Pollutants on Aquatic Organisms and Human)
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Review

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26 pages, 602 KB  
Review
New Insights into the Relationship Between Microplastics and Diabetes from the Perspective of the Gut–Liver Axis and Macrophage Regulation
by Huasen Wang, Ben Liu and Xiangfeng Zhao
Toxics 2026, 14(3), 241; https://doi.org/10.3390/toxics14030241 - 10 Mar 2026
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Abstract
Microplastics (MPs) are increasingly recognized as a global environmental threat. Emerging evidence suggests they may have metabolic consequences. In this review, we synthesize current findings from animal and in vitro studies to propose a mechanistic framework linking MP exposure to type 2 diabetes [...] Read more.
Microplastics (MPs) are increasingly recognized as a global environmental threat. Emerging evidence suggests they may have metabolic consequences. In this review, we synthesize current findings from animal and in vitro studies to propose a mechanistic framework linking MP exposure to type 2 diabetes mellitus (T2DM). This framework is uniquely centered on the gut–liver axis and macrophage-centric immune networks. We systematically delineate evidence suggesting that MPs can compromise intestinal barrier integrity, instigate gut dysbiosis, and promote pro-inflammatory M1 polarization of macrophages in experimental models. This immune activation is proposed to subsequently amplify hepatic inflammation, potentially contributing to systemic insulin resistance (IR) and pancreatic β-cell dysfunction. We emphasize that while this pathway is biologically plausible, direct causal evidence in humans remains limited and is a critical knowledge gap. Integrating multi-level evidence from animal models and in vitro systems, we delve into the trans-organ immunometabolic effects of MPs within adipose tissue, pancreas, and skeletal muscle, establishing their role as a novel class of “metabolic disruptors.” Critically, we assess the key controversies and knowledge gaps pertaining to dose–response relationships, particle-specific toxicity (size, polymer type, and additives), the effects of complex environmental mixtures, and the urgent need for robust human validation. We advocate for future research priorities, including multi-omics integration, advanced organ-on-a-chip platforms, prospective cohort studies, and targeted intervention strategies, to propel this field from mechanistic exploration toward clinical and public health relevance. Finally, this synthesis underscores that mitigating the production and environmental release of MPs, alongside developing strategies to impede their bioavailability and accumulation, represents a crucial public health imperative for the prevention of environment-related metabolic diseases. Full article
(This article belongs to the Special Issue Toxic Effects of Emerging Pollutants on Aquatic Organisms and Human)
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