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61,005 resultsShowing papers similar to Immune and Oxidative Stress Response of the Fish Xyrichthys novacula Infected with the Trematode Ectoparasite Scaphanocephalus sp. in the Balearic Islands
ClearExploring the impact of high salinity and parasite infection on antioxidant and immune systems in Coris julis in the Pityusic Islands (Spain)
Researchers examined how high salinity from desalination plant discharge and parasite infection affect the antioxidant and immune systems of a Mediterranean fish species. They found that elevated salinity combined with parasitic infection caused significant oxidative stress and immune suppression in the fish. The study suggests that coastal pollution from desalination may compound the effects of natural stressors on marine wildlife.
Microplastic Presence in the Digestive Tract of Pearly Razorfish Xyrichtys novacula Causes Oxidative Stress in Liver Tissue
Microplastics were found in 89% of pearly razorfish (Xyrichtys novacula) specimens from the Balearic Islands, with fish carrying more than 4 MPs showing elevated activities of glutathione peroxidase, glutathione reductase, and glutathione S-transferase in liver tissue, indicating oxidative stress and detoxification responses.
Influence of water chemistry and contaminant occurrence on the oxidative stress ecology of Cottus gobio in a high-mountain lake (Carnic Alps)
Researchers examined oxidative stress in a freshwater fish species living in a high-mountain lake in the Italian Alps, analyzing how water chemistry and contaminant levels affected the fish's health. They found seasonal variations in stress biomarkers that correlated with changes in water conditions and the presence of persistent pollutants including microplastics. The study provides insights into how even remote mountain ecosystems are experiencing measurable biological effects from environmental contamination.
Presence and Potential Effect of Microplastics Associated with Anthropic Activity in Two Benthic Fishes Serranus scriba and Lithognathus mormyrus
Researchers compared microplastic ingestion and oxidative stress responses in two Mediterranean coastal fish species (Serranus scriba and Lithognathus mormyrus) from sites with different levels of human activity near Mallorca, finding higher microplastic loads and greater antioxidant enzyme activity at the more impacted site.
Antioxidative Defense and Gut Microbial Changes under Pollution Stress in Carassius gibelio from Bucharest Lakes
Researchers compared antioxidative responses and gut microbiome changes in Prussian carp collected from polluted and less-polluted lakes in Bucharest, finding that fish from more contaminated sites showed elevated oxidative stress markers and altered microbial communities consistent with exposure to heavy metals and other aquatic pollutants.
Partial immune responses in Sichuan bream (Sinibrama taeniatus) after starvation
Researchers found short-term starvation in Sichuan bream induced innate immunity while suppressing adaptive immunity, showing nutritional stress alters fish immune balance.
Effect of polystyrene microplastics on the antioxidant system and immune response in GIFT (Oreochromis niloticus)
Farmed tilapia exposed to polystyrene microplastics of different sizes showed elevated oxidative stress and immune inflammation markers, particularly in the brain, compared to unexposed fish. The findings suggest chronic microplastic exposure can impair immune defenses in commercially important freshwater fish, raising concerns for both aquaculture and wild fisheries.
Interaction of Microplastic Presence and Oxidative Stress in Freshwater Fish: A Regional Scale Research, East Anatolia of Türkiye (Erzurum & Erzincan & Bingöl)
Researchers found microplastics in multiple fish species from rivers in eastern Turkey, with black fragments and fibers predominating, and detected elevated oxidative stress markers in fish liver tissue, with the highest reactive oxygen species levels in fish from Bingöl province.
Metal load and oxidative stress driven by organotin compounds on rainbow trout
Researchers injected rainbow trout with two forms of tributyltin — a toxic antifouling chemical once widely used in marine paints and now banned — and found that both compounds caused oxidative stress and altered antioxidant defenses in the liver within days. The findings confirm that tributyltin residues still present in aquatic environments pose ongoing ecotoxicological risks to freshwater fish.
Effects of microplastics, pesticides and nano-materials on fish health, oxidative stress and antioxidant defense mechanism
This review examines how microplastics, pesticides, and nanoparticles harm fish by causing oxidative stress, DNA damage, immune system disruption, and changes in gut bacteria. Since contaminated fish is a major pathway for microplastics and pesticides to enter the human diet, declining fish health and quality directly affect food safety and human nutrition worldwide.
Functional Additives in a Selected European Sea Bass (Dicentrarchus labrax) Genotype: Effects on the Stress Response and Gill Antioxidant Response to Hydrogen Peroxide (H2O2) Treatment
Researchers evaluated how functional feed additives affected stress response and gill antioxidant capacity in a selectively bred high-growth European sea bass genotype, finding that dietary supplements could help reinforce oxidative stress tolerance during hydrogen peroxide treatment.
Physiological Responses to Microplastic Ingestion in the Peacock Wrasse Symphodus tinca from Ibiza, Spain
Researchers assessed microplastic occurrence and physiological stress responses in peacock wrasse (Symphodus tinca) from the Balearic Islands, finding MPs in 60.7% of fish sampled with 58 total items. Fish with microplastics showed elevated markers of oxidative stress and detoxification enzyme activity compared to those without.
Long-term hypoxia and reoxygenation induced oxidative stress lead to immunosuppression and apoptosis in golden pompano (Trachinotus blochii)
Researchers exposed golden pompano fish to 14 days of low-oxygen conditions followed by reoxygenation and found that this hypoxia-reoxygenation cycle caused oxidative stress, immunosuppression, and increased liver cell apoptosis.
Effect of microplastics on Yersinia ruckeri infection in rainbow trout (Oncorhynchus mykiss)
Researchers found that microplastic exposure predisposed rainbow trout to more severe Yersinia ruckeri infections, with co-exposed fish showing worse blood biochemical parameters and hepatic oxidative stress compared to fish exposed to the pathogen alone.
Oxidative stress responses of microplastic-contaminated Gambusia affinis obtained from the Brantas River in East Java, Indonesia
Researchers examined oxidative stress biomarkers in wild Gambusia fish collected from the Brantas River in Indonesia and correlated them with microplastic contamination levels. They found elevated antioxidant enzyme activity in the gills and digestive tracts of fish from more polluted sites, indicating biological stress responses to microplastic exposure. The study provides field-based evidence linking microplastic pollution in tropical rivers to measurable physiological harm in native fish species.
Effects of anthropogenic and environmental stressors on the current status of red mullet (Mullus barbatus L., 1758) populations inhabiting the Bulgarian Black Sea waters
Researchers assessed the health of red mullet populations in the Bulgarian Black Sea, finding that fish from the southern region ingested more microplastics and showed elevated oxidative stress and reduced antioxidant defenses. The study suggests these populations are under significant anthropogenic pressure, with genetic markers indicating patterns typical of overexploited species.
Trace minerals, antioxidant defense, and safe consumption of Nile tilapia: insights from ecological variability in lake Mariout, Egypt
Researchers assessed trace mineral accumulation, antioxidant enzyme activity, and health risks in Nile tilapia collected from two restored basins of Lake Mariout, Egypt, finding no non-carcinogenic risk at normal consumption levels and upregulated metal-regulatory and antioxidant genes in fish from the more contaminated basin.
Evaluation of Ammonia Nitrogen Exposure in Immune Defenses Present on Spleen and Head-Kidney of Wuchang Bream (Megalobrama amblycephala)
Researchers investigated chronic ammonia exposure effects on Wuchang bream, finding dose-dependent immune suppression in the spleen and head-kidney through disruption of inflammatory signaling pathways and antioxidant defense mechanisms.
Integrated assessment with biomarker responses and metal concentrations on some fish species from İzmir Bay: A preliminary investigation
Researchers conducted a preliminary investigation of antioxidant biomarkers (superoxide dismutase, catalase, malondialdehyde) and heavy metal bioaccumulation (Hg, Cd, Pb, Cr, Cu, Zn, Mn) in three fish species (Sparus aurata, Chelon labrosus, Diplodus vulgaris) from inner and outer sections of Izmir Bay, Turkey, sampled in November 2019. Using atomic absorption spectrometry and microplate readers, they found higher metal concentrations in liver tissues and elevated Hg and Zn in S. aurata, providing baseline data on pollution-related oxidative stress in coastal fish.
Oxidative Stress and DNA Damage in Pagrus major by the Dinoflagellate Karenia mikimotoi
Researchers exposed red sea bream to the harmful algal bloom species Karenia mikimotoi and found that it caused oxidative stress and DNA damage in the fish's gill tissue. The dinoflagellate triggered reactive oxygen species accumulation and activated antioxidant defense enzymes at concentrations above 5,000 cells per milliliter. The study confirms that K. mikimotoi blooms pose a direct molecular-level threat to commercially important aquaculture fish species.
Astaxanthin mitigates oxidative stress caused by microplastics at the expense of reduced skin pigmentation in discus fish
Researchers investigated how microplastics affect skin color in discus fish and whether the antioxidant astaxanthin could help. They found that microplastic exposure triggered oxidative stress that reduced skin pigmentation, and while astaxanthin supplementation improved coloring and antioxidant defenses, the pigment was diverted from skin coloration toward fighting oxidative damage. The study suggests that microplastic-induced stress forces fish to make trade-offs between maintaining body color and combating internal damage.
Malathion-induced Biochemical and Molecular Changes in the Brain of Danio rerio as Biomarkers of Oxidative Stress Damage
Not relevant to microplastics — this study examines how the pesticide malathion causes oxidative stress and neurological damage in zebrafish brains, using antioxidant enzyme activity and gene expression as biomarkers.
A Biomarker Approach as Responses of Bioindicator Commercial Fish Species to Microplastic Ingestion: Assessing Tissue and Biochemical Relationships
Researchers assessed microplastic intake and antioxidant biomarker responses in three Mediterranean fish species, finding that microplastic ingestion correlated with oxidative stress indicators across red mullet, bogue, and anchovy populations.
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.