Effects of mercury on some enzymes in the gill and muscle tissues of oreochromis niloticus
Abstract
The toxic effects of the metals on the aquatic ecosystems can be found by measuring enzyme activities of fish tissues. This study aimed to analyze the results of mercury (Hg) exposure on the change of the asetylcolinestrase (AChE), glutation peroxidase (GPx) and glutamic piruvate transaminase (GPT) activities in gills and muscles of Oreochromis niloticus (Linnaeus, 1758). The fish were exposed to 0.1 and 0.01 ppm Hg for periods of 7 and 21 days. The enzyme activities in the tissues were determined by the use of ultraviolet spectroscopy. The AChE activity decreased while the GPx activity increased in both muscle and gills as a result to exposure to Hg in experimental group when compared to the control group. The GPT activity in gills were found to increase in the first 7 days of exposure and decreased after the exposure of 21 days. The data obtained revealed that AChE, GPx and GPT activities in the gill and muscle tissues of Oreochromis niloticus were observed to change as a result of the exposures of both low and high mercury concentrations.
Keywords
Kaynakça
- Alves, L. M., Lemos, M.F.L., Correiaa, J.P.S., Costaa N.A.R. & Novais S.C. (2015). The potential of cholinesterases as tools for biomonitoring studies with sharks: Biochemical characterization in brain and muscle tissues of Prionace glauca. Journal of Experimental Marine Biology and Ecology, 465:49–55 doi: 10.1016/j.jembe.2015.01.006
- Badiou, A. & Belzunces L.P. (2008). Is acetylcholinesterase a pertinent biomarker to detect exposure of pyrethroids? A study case with deltamethrin Chemico-Biological Interactions, 25:175(1-3):406-9. doi: 10.1016/j.cbi.2008.05.040
- Berntssen, M.H.G, Aatland, A. & Handy, R.D. (2003). Chronic dietary mercury exposure causes oxidative stress, brain lesions, and altered behaviour in Atlantic salmon (Salmo salar). Aquatic Toxicology, 65:55-72. doi: /10.1016/S0166-445X(03)00104-8
- Beutler, E. (1984). Red cell metabolism: A manual of biochemical methods, 2nd ed., New York, Grune and Stratton.
- Bensefa-Colas, L., Andujar, P. & Descatha. A. (2011). Mercury poisoning Revue de Medecine Interne, Elsevier Masson, 32(7):416-24.
- Brancoa, V., Canariob, J., Luc, J., H, A., Carvalho, C. (2012) Mercury and selenium interaction in vivo: Effects on thioredoxin reductase and glutathione peroxidase. Free Radical Biology & Medicine 52: 781–793 Chemosphere 87: 1215– 1221
- Liao, C.Y., Fu, J.J., Shi, J.B., Zhou, Q.F., Yuan, C.G., Jiang G.B., (2006). Methylmercury Accumulation, Histopathology Effects, and Cholinesterase Activity Alterations in Medaka (Oryzias Latipes) Following Sublethal Exposure to Methylmercury Chloride. 22(2): 225–233. doi:10.1016/j.etap.2006.03.009
- Costa, J.R.M., Mela, M., Assis, H. C. S., Pelletier, E., Randi, M. A. F., & Oliveira-Ribeiro, C.A. (2007). Enzymatic inhibition and morphological changes in Hoplias malabaricusfrom dietary exposure to lead (II) or methylmercury. Ecotoxicology and Environmental Safety, 67: 82–88.
Ayrıntılar
Birincil Dil
İngilizce
Konular
-
Bölüm
Araştırma Makalesi
Yazarlar
Gülbin Firidin
GAZI UNIV
Türkiye
Yayımlanma Tarihi
12 Haziran 2017
Gönderilme Tarihi
15 Kasım 2016
Kabul Tarihi
9 Şubat 2017
Yayımlandığı Sayı
Yıl 2017 Cilt: 34 Sayı: 2