Metal pollutants induced peroxidase activity in different body tissues of freshwater fish, Labeo rohita

• Published in: Environmental chemistry and ecotoxicology Vol. 2; pp. 162 - 167
• Main Authors: Javed, Maria, Abbas, Khalid, Ahmed, Tanveer, Abdullah, Sajid, Naz, Huma, Amjad, Hina
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 2020; KeAi Communications Co., Ltd
• Subjects: Antioxidants; Aquatic contamination; Hepatic and renal tissues; Riverine fish; Antioxidants; Hepatic and renal tissues; Riverine fish; Aquatic contamination
• ISSN: 2590-1826; 2590-1826
• DOI: 10.1016/j.enceco.2020.09.001

The aim of this study was to assess the activity of peroxidase (Px) in relation to metal (Zn, Cr, Ni, Co and Cu) bioaccumulation in riverine Labeo rohita gills, liver, kidney and muscle tissues. The sampled fish organ tissues from River Indus-Pakistan's major fishing sites including Kalabagh (KB), Chashma Barrage (CB) and Taunsa Barrage (TB) were extracted at the sampling site and kept in crushed dried ice boxes for transportation to the laboratory where they were divided into two parts (for Px assay and metal detection). The order of peroxidase activity was respectively observed as CB > KB > TB in the liver and CB > TB > KB in the gills, kidney and muscle tissues. A significant difference was observed statistically at p ≤ 0.05 between different sources of fish Px activity. The sequence of selected metals was observed as Cr > Zn > Cu > Ni > Co, Zn > Cu > Cr > Ni > Co, Zn > Cu > Cr > Co and Zn > Cu > Cr > Ni > Co, respectively in the gills, liver, kidney and muscle tissue. The inferences from this study will clarify how biomarkers of oxidative stress can be used to detect contamination of metals.
•Heavy metals present in the aquatic bodies accumulate in the fish bodies, transferred to the consumers and cause hazardous effect on health of the people.•Bioaccumulation of heavy metals in fish body is of great concern due to different affinity of different organs toward accumulation of heavy metal.•The aim of this study was to assess the activity of peroxidase (Px) in relation to metal (Zn, Cr, Ni, Co and Cu) bioaccumulation in riverine Labeo rohita gills, liver, kidney and muscle tissues.•The inferences from this study will clarify how biomarkers of oxidative stress can be used to detect contamination of metals.