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61,005 resultsShowing papers similar to Effects of soil trace metals, organic carbon load and physicochemical stressors on active oxygen species metabolism in Scylla serrata sampled along the Bay of Bengal in Odisha state, India
ClearHow does the internal distribution of microplastics in Scylla serrata link with the antioxidant response in functional tissues?
Researchers investigated microplastic distribution across tissues of the mud crab Scylla serrata, finding that internal accumulation patterns correlated with antioxidant responses in functional tissues, revealing tissue-specific biological impacts of microplastic exposure.
IMPACT OF HEAVY METAL CONTAMINATION ON PHYTOCHEMICAL PROFILES IN MARINE CRUSTACEANS: A COMPARATIVE STUDY OF Farfantepenaeus notialis AND Macrobrachium vollenhovenii
This review examined how heavy metal contamination affects phytochemical profiles — including antioxidants, pigments, and secondary metabolites — in marine crustaceans. Metal accumulation was found to disrupt normal biochemical composition with implications for seafood quality and consumer safety.
Effects of Microplastics and Metal Pollution on Bivalves from the Bulgarian Black Sea Sublittoral, with Comments on their Adaptive Capacity
Researchers assessed the combined effects of microplastic accumulation and heavy metal bioaccumulation on four bivalve species from the Bulgarian Black Sea coast. They found that microplastics, predominantly pellets, and metals like lead induced oxidative stress in all studied species, but the specific stress responses varied between species. The study suggests that Black Sea bivalves possess adaptive capacity to current pollution levels, activating their antioxidant defense systems in response to contamination.
State of the antioxidant defense system in wedge clams from Bulgarian Black Sea as a measure of resistance to environmental impacts
Researchers assessed the antioxidant defense status of wedge clams (Donax trunculus) collected from multiple Bulgarian Black Sea sites in summer and autumn, measuring catalase, superoxide dismutase, glutathione peroxidase, glutathione-S-transferase, and glutathione. They found that enzyme activity varied seasonally and by site, with elevated GST at tourist-heavy localities in summer suggesting heightened detoxification responses to anthropogenic environmental pressure.
Microplastic intake and enzymatic responses in Mytilus galloprovincialis reared at the vicinities of an aquaculture station
Researchers evaluated antioxidant defenses and oxidative stress markers in gills of Mediterranean mussels (Mytilus galloprovincialis) reared near an aquaculture station, finding that microplastics derived from aquaculture activities induced significant enzymatic stress responses.
Interactive Immunomodulation in the Mediterranean Mussel Mytilus galloprovincialis Under Thermal Stress and Cadmium Exposure
Combined exposure to elevated temperature and cadmium in Mediterranean mussels triggered complex interactive effects on immune and antioxidant systems, with simultaneous stressors producing non-additive responses that highlight the difficulty of predicting organism health in multiply polluted warming seas.
H2O2-Induced Oxidative Stress Responses in Eriocheir sinensis: Antioxidant Defense and Immune Gene Expression Dynamics
This study examined how Chinese mitten crabs respond to oxidative stress caused by hydrogen peroxide, finding that their antioxidant defenses and immune gene activity initially ramp up but then collapse under prolonged or high-dose exposure. While not directly about microplastics, the findings are relevant because microplastics are known to trigger similar oxidative stress in aquatic organisms, and this research helps map the biological pathways involved.
Anthropization, Salinity and Oxidative Stress in Animals in the Coastal Zone
This review examines how anthropogenic activities and rising coastal salinity combine with oxidative stress in animals living in coastal zones, outlining the physiological mechanisms by which these combined stressors impair aquatic organism health.
Elemental analysis of wild Eriocheir sinensis: Determining the geographic origin and human health risk assessment
Researchers analyzed the elemental composition of wild mitten crabs from three different river systems in China to determine whether trace element profiles could identify their geographic origin. They found significant differences in element concentrations across locations and successfully used statistical models to classify crabs by origin with high accuracy. The study also assessed potential health risks from consuming the crabs and found that certain trace elements, particularly cadmium, exceeded safe intake thresholds.
Effect of dietary Bacillus subtilis supplement on Cd toxicokinetics and Cd-induced immune and antioxidant impairment of Procambarus clarkii
Researchers exposed red swamp crayfish to cadmium at 0.1 and 1.0 mg/L with and without dietary Bacillus subtilis supplementation, finding dose- and time-dependent cadmium accumulation with gills showing highest uptake, and demonstrating that Bacillus subtilis supplementation ameliorated cadmium-induced immune and antioxidant impairment across crayfish tissues.
Evaluation of metallic pollution of north eastern Algerian coasts using the demosponge Chondrilla nucula Schmidt, 1862
Researchers monitored seasonal concentrations of copper, zinc, lead, and cadmium in the demosponge Chondrilla nucula from two sites in the Gulf of Annaba (northeastern Algeria) over one year, finding highest metal concentrations in winter and spring and corresponding fluctuations in oxidative stress biomarkers, supporting the sponge as a reliable bioindicator of coastal heavy metal pollution.
Combined effects of nanoplastics and heavy metal on antioxidant parameters of juvenile tri-spine horseshoe crabs
Researchers found that combined exposure to polystyrene nanoplastics and copper ions caused greater oxidative stress in juvenile tri-spine horseshoe crabs than either stressor alone, with antioxidant enzyme levels remaining disrupted even after a seven-day recovery period.
Genome-wide identification and characterization of superoxide dismutases in four oyster species reveals functional differentiation in response to biotic and abiotic stress
Genome-wide analysis of superoxide dismutase (SOD) genes in four oyster species revealed that most extracellular Cu/Zn-SOD proteins appear to have lost enzymatic activity, with only one cytosolic form likely retaining function. Expression patterns differed in response to biotic and abiotic stressors, suggesting functional differentiation among SOD family members that may serve as biomarkers of environmental stress.
Metal Levels in Crab Sentinel Species from the Mediterranean Sea: Safety and Toxicological Risk Assessment
Scientists tested three types of Mediterranean crabs for toxic metals like mercury, lead, and arsenic, and found levels of these harmful substances that exceeded safe limits for food. While the overall ocean pollution in the area was low, the high metal levels in the crabs suggest people who eat these shellfish could be exposed to dangerous amounts of toxins. This study highlights the need for regular testing of seafood to protect human health from metal contamination.
Microplastics in Scylla Serrata: A baseline study from southwest India
Researchers examined microplastic contamination in the mud crab Scylla serrata from mangrove habitats on India's southwestern coast and found an average of about 29 microplastic particles per individual. Fibers were the dominant type, and polypropylene and polyethylene were the most common polymers detected. The study establishes a baseline for microplastic presence in a commercially important crab species, raising questions about potential human exposure through seafood consumption.
Effects of Copper Exposure on Oxidative Stress, Apoptosis, Endoplasmic Reticulum Stress, Autophagy and Immune Response in Different Tissues of Chinese Mitten Crab (Eriocheir sinensis)
Researchers investigated the effects of copper exposure on oxidative stress, apoptosis, endoplasmic reticulum stress, autophagy, and immune response across multiple tissues of Chinese mitten crab. The study found that copper exposure at various concentrations triggered dose-dependent toxic responses in hemolymph, hepatopancreas, gills, and muscle, providing insights into how heavy metal contamination affects crustacean physiology.
The Mud Crab Buffet: Microplastics pollution in Scylla Serrata from Kota Mangroves
Researchers recovered 264 microplastic particles from the guts of mud crabs (Scylla serrata) collected from mangroves in Karnataka, India, averaging about 29 particles per crab, with polypropylene, high-density polyethylene, and polyester being the dominant plastics. A hazard index assessment rated the microplastic contamination as a severe risk to the crabs, underscoring the threat to mangrove ecosystems and the seafood that humans consume from them.
Effects of Prometryn Exposure on Hepatopancreas Oxidative Stress and Intestinal Flora in Eriocheir sinensis (Crustacea: Decapoda)
Researchers exposed Chinese mitten crabs to the herbicide prometryn at low doses over 20 days and found it caused oxidative stress in the liver-like organ and disrupted gut bacteria. Short-term exposure triggered immune and detoxification responses, but longer exposure led to immune fatigue. The study suggests that chronic low-level herbicide exposure in aquatic environments can harm crustacean health through multiple biological pathways.
Synergistic effects of microplastic and lead trigger physiological and biochemical impairment in a mangrove crab
Researchers exposed mangrove fiddler crabs to microplastics and lead, both alone and in combination, to assess their joint toxic effects. They found that co-exposure synergistically increased lead bioaccumulation, oxygen consumption, and lipid peroxidation while suppressing antioxidant enzyme activity. The study suggests that microplastics can amplify the physiological harm of heavy metal contamination in sensitive mangrove ecosystems.
Minerals and Heavy Metal Composition in Seaweeds of the Eastern Coast, Northern Bay of Bengal, Bangladesh
Researchers analyzed mineral and heavy metal content across nine seaweed species collected from the Bangladesh coast, finding species- and phyla-specific variation in Ca, Mg, Fe, Zn, Mn, Cu, Pb, and Cd concentrations linked to environmental parameters and metabolic factors.
Marine mussel metabolism under stress: Dual effects of nanoplastics and coastal hypoxia
This study examined how nanoplastics and low oxygen levels together affect marine mussels, finding that both stressors disrupted the animals' internal balance and energy metabolism. The combination of nanoplastics and oxygen-depleted water was more harmful than either stressor alone, damaging cellular defenses against oxidative stress. Since mussels are widely consumed as seafood, these findings raise questions about the safety of shellfish harvested from polluted, oxygen-poor coastal waters.
Effects of Human Activity on Markers of Oxidative Stress in the Intestine of Holothuria tubulosa, with Special Reference to the Presence of Microplastics
Researchers studied oxidative stress markers in the intestines of sea cucumbers (Holothuria tubulosa) collected from areas with varying levels of human activity and microplastic contamination. The study found elevated oxidative stress indicators in organisms from more polluted sites, suggesting that microplastic ingestion contributes to cellular damage in marine invertebrates.
Microplastics pollution in mud crab (Scylla sp.) aquaculture system: First investigation and evidence
Researchers conducted the first investigation of microplastic pollution in mud crab (Scylla sp.) aquaculture systems, sampling water and sediment from multiple stations. The study found microplastic particles present across the aquaculture environment, raising food security concerns given that mud crab is a highly demanded commercial species consumed globally.
Does microplastic induce oxidative stress in marine invertebrates
This review examined whether microplastic ingestion induces oxidative stress in marine invertebrates, finding evidence that microplastics can elevate reactive oxygen species and disrupt antioxidant defenses in species including mussels, sea urchins, and copepods. Oxidative stress is a key mechanism through which microplastics may cause cellular damage in marine animals.