Background: As a result of the rapid expansion of anthropogenic activities, particularly in the aquatic ecosystem, environmental pollution has escalated in recent decades. Under a variety of harsh environmental conditions, marine creatures can be subject to oxidative stress, which causes changes in metabolic components that can be measured to determine the health status of the organism.
The goal of this study is to monitor the effect of Naphthalene on bivalve mussels and to use a large number of biomakers to uncover distinct and distinctive patterns. In order to comprehend the changes in marker enzymes in P. viridis haemolymph, gill, and digestive gland, the green mussels Perna viridis were subjected to naphthalene.
Green mussels were exposed to naphthalene for 28 days in order to examine biomarker alterations. Acid phosphatase (ACP) and alkaline phosphatase (ALP), alanine transaminase (ALT), and aspartate transaminase activity (AST) were measured in mussels P. viridis haemolymph, gill, and digestive gland. After 28 days of naphthalene exposure, the haemolymph had significantly increased levels of all marker enzymes. Marker enzymes were inhibited in the gill and digestive gland, and all of the marker enzymes in the haemolymph, gill, and digestive gland were concentration dependent in the majority of cases. The alterations in marker enzymes found in P. viridis haemolymph and the other two tissues were statistically significant.
Conclusions: The current study found a significant relationship between all biomarkers examined in mussels exposed to naphthalene. Overall, the results show that when compared to tissues, haemolypmh is the most sensitive component to naphthalene exposure, and it might be used as a bioindicator of organic pollution exposure.
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Backgrounds: Environmental contamination has increased dramatically in recent decades as a result of an increase in anthropogenic activities, particularly in the aquatic ecosystem. Under a range of harsh environmental conditions, marine organisms can be susceptible to oxidative stress.
The goal of this study is to find individual and distinct patterns of Perna viridis reactions to naphthalene using a wide variety of biomarkers, in order to better understand the changes in oxidative stress and antioxidant defence that occur in the bivalve P. viridis after exposure to naphthalene.
The mussels were exposed to naphthalene for 14 days to assess changes in oxidative stress and antioxidant defence. For oxidative stress markers, the levels of lipid peroxidation (LPO) and carbonyls protein (CP) were examined. Superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) are antioxidant defence enzymes that were evaluated as part of the study.
After 14 days of naphthalene exposure, the haemolymph includes considerably more carbonyls, proteins, and lipid peroxidation. In the haemolymph of mussels exposed to very low levels of naphthalene for 14 days, a number of antioxidant defence enzymes, including superoxide dismutase, catalase, and glutathione peroxidase, were regulated. When exposed to naphthalene, antioxidant defence activities were changed. Conclusions: The current study showed a significant association between oxidative stress and antioxidant defences in mussels exposed to naphthalene. Overall, the findings reveal that haemolypmh is the component most vulnerable to oxidative damage, suggesting that antioxidant enzyme activity in P. viridis could be employed as a bioindicator of organic pollution exposure.
Please see the link :- http://mbimph.com/index.php/UPJOZ/article/view/2624
Chronic exposure of the freshwater fish Rasbora daniconius to Naphthalene showed bioaccumulation in varying concentrations in the gill, liver, intestine and kidney tissues. The extent of bioaccumulation of Naphthalene was assessed with the help of GCMS in terms of wet weight of tissue. Maximum bioaccumulation of Naphthalene was found in intestine tissue, to the extent of 0.33 μg g-1 wet weight of tissue, followed by kidney, gills and liver. Bioaccumulation found in the tissues of fish indicates the possibility of biomagnifications across various trophic levels of food chain and a possible ultimate effect upon human health.
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