Cigarette butt-induced oxidative stress in the liver of goldfish

سال انتشار: 1399
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 171

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شناسه ملی سند علمی:

BIOCONF21_0611

تاریخ نمایه سازی: 7 شهریور 1400

چکیده مقاله:

Annually, over ۵.۵ trillion cigarettes are produced worldwide, and it is estimated that ۴.۵ trillion cigarette butts (Filters) are still being littered in the world. The dispersal of cigarette butts has caused this hazardous waste to be considered as one of the most important environmental risks all over the world. Cigarette butts are carried by stormwater into the surface waters and ultimately the deep ones. Following increases in the free radical generation and impared antioxidant defence system activity, oxidative stress is occurred leading to structural and functional dysfunctions in organisms. In the present study, our goal was to assess the possible changes in cigarette butt leachate-induced oxidative stress biomarkers in the liver of goldfish (C. auratus L.) under the standard lab conditions. At least ۸ goldfish and leachate from ۲ Kent cigarette butts were added to each ۵۰L glass tanks and kept under standard conditions (independent triplicates). Following ۷&۱۰ days, liver samples gently removed and oxidative stress biomarkers viz. the activities of antioxidant enzymes glutathione peroxidase (GPx) and superoxide dismutase (SOD) and also carbolynated proteins (CP) content were measured as compared to controls in the liver homogenates, spectrophotometrically. Our results showed that cigarette butt leachate treatments caused a significant elevation in the levels of oxidative stress biomarkers in all fish liver samples (p<۰.۰۵). These changes may lead to the structural and functional dysfunctions in the certain tissues. In our study, only ۳ mortality cases were seen. Collectively, once cigarette butts enter the aquatic environments may result in fish mortalities due to certain physiological disorders in their liver tissues.

نویسندگان

Mehran Arabi

Animal Sciences group, Faculty of Basic Sciences, Shahrekord University, Iran

Saied Kazemi Hossein-Abadi

Animal Sciences group, Faculty of Basic Sciences, Shahrekord University, Iran