Investigations of the nervous system biomarkers in the brain and muscle of freshwater fish ( Oreochromis niloticus ) following accumulation of nanoparticles in the tissues

Turkish journal of zoology

article

ESİN GÜLNAZ CANLI¹  MUSTAFA CANLI¹ 

[1] Department of Biology, Faculty of Science and Arts, Çukurova University

关键词: Metal oxides;    nanoparticle;    AChE;    ATPase;    biomarker;    toxicity;   

DOI  :  10.3906/zoo-1912-11

学科分类：生物科学（综合）

来源: Scientific and Technical Research Council of Turkey - TUBITAK

【 摘 要 】

The use of nanoparticles (NPs) has increased in recent years and consequently they are being released into the environment. The final destination of most NPs is the aquatic environment due to washing up by rain waters. Fish (n = 120) were exposed to different concentrations (0, 1, 5, and 25 mg/L) of aluminum-oxide (Al$_{2}$O$_{3}$), copper-oxide (CuO), and titanium-dioxide (TiO$_{2}$) NPs for 14 days and 14 days of depuration period (no NP in water). Following NP exposures, activities of Na,K-ATPase, Mg-ATPase, Ca-ATPase, and acetylcholinesterase (AChE) in the brain and muscle were measured. AChE activity in the brain and muscle decreased significantly (P 0.05) alteration. Similarly, Ca-ATPase activity in the muscle was decreased significantly by Al$_{2}$O$_{3}$ NPs and CuO NPs, but not by TiO$_{2}$ NPs. Total ATPase and Mg-ATPase activities did not alter significantly in the brain, though Na,K-ATPase activity decreased after exposure to CuO NPs. Half (n = 60) of the NP-exposed fish were transferred to NP-free waters for depuration experiments for 14 days. Transmission electron microscope images demonstrated NP aggregates in the tissues, although some NPs were retained in the tissues after the depuration. This study showed that NPs are able to alter nervous system biomarkers, copper NP being the most effective one.

【 授权许可】

Unknown