| 
              
              
              Open Access  
 
              
              
              
              Research 
              
              
(Published 
				online: 20-06-2016)  
              14. 
				
				
				Effect of acute exposure to nonylphenol on biochemical, 
				hormonal, and hematological parameters and muscle tissues 
				residues of Nile tilapia; 
				
				Oreochromis niloticus - 
				
				
				Hager Tarek H. Ismail and Heba Hassan H. Mahboub 
              
              Veterinary World, 9(6): 616-625   
              
   
                
                
doi: 
              
				
				10.14202/vetworld.2016.616-625 
                
				  
				
				Hager Tarek H. Ismail: 
				
				Department of Clinical Pathology, Faculty of Veterinary 
				Medicine, Zagazig University, Zagazig City, Sharkia Province, 
				Egypt; hager_vet@hotmail.com / hagar_vet@zu.edu.eg 
				
				Heba Hassan H. Mahboub: 
				
				Department of Fish Diseases and Management, Faculty of 
				Veterinary Medicine, Zagazig University, Zagazig City, Sharkia 
				Province, Egypt; hhhmb@yahoo.com   
				
				Received: 07-02-2016, Accepted: 16-05-2016, Published online: 
				20-06-2016   
				
              	
              	Corresponding author: 
              	
				
				Hager Tarek H. Ismail, e-mail:
				
				
				hager_vet@hotmail.com / hagar_vet@zu.edu.eg 
 
              Citation: 
				
				Ismail HTH, Mahboub HHH (2016) Effect of acute exposure to 
				nonylphenol on biochemical, hormonal, and hematological 
				parameters and muscle tissues residues of Nile tilapia; 
				
				
				Oreochromis niloticus, Veterinary World, 9(6): 
				616-625. 
 
              
				Abstract 
 
				
				
				Aim: 
				
				This study is aimed to evaluate some biochemical, hormonal, 
				hematological, and histopathological changes in Nile tilapia,
				
				
				Oreochromis niloticus, 
				
				after acute exposure to nonylphenol (NP). In addition to 
				detection of NP residues in the fish, muscle tissues for human 
				health concern. 
				
				
				Materials and Methods: 
				
				A total of 90 apparently healthy Nile tilapia, 
				
				O. niloticus, 
				
				were randomly divided into three equal groups; each containing 
				30 fish (three replicates). Groups 1 and 2 kept as a control and 
				solvent control (acetone), respectively, and Group 3 exposed to 
				NP at a dose level of 500 μg/L water for 7 successive days. 
				Blood and tissue samples were collected 2 times randomly from 
				each group after 7 days from fish exposure to NP and 10 days 
				from exposure stopping.  
				
				
				Results: 
				
				Fish exposed to NP Group 3 showed anorexia, sluggish movement, 
				erythema of the skin, areas of scales loss, and hemorrhagic 
				ulcers in some areas of body region leading to exposing the 
				viscera. Biochemical results revealed a significant increase in 
				serum total proteins and globulins levels, a highly significant 
				increase in serum alanine aminotransferase and aspartate 
				aminotransferase activities, triglycerides, cholesterol, and 
				creatinine levels, insignificant increase in serum uric acid 
				level, and a highly significant decrease in serum testosterone 
				and estradiol-β17 levels in Group 3 in compare with the control 
				group. Histopathological finding confirms these results. While 
				hematological results of the same group revealed a significant 
				increase in red blood cells count and packed cell volume value, 
				insignificant increase in hemoglobin concentration, leukopenia, 
				lymphopenia, and monocytopenia in compared with the control 
				group. All of these changes appeared after 7 days from fish 
				exposure to NP. Most of these alterations returned toward the 
				normal level after 10 days from stopping exposure to NP. NP 
				residues detected in fish muscle tissues of Group 3 during 
				exposure and after stopping exposure to it. 
				
				
				Conclusion: 
				
				It is concluded that NP is a toxic pollutant and has an adverse 
				effect on fish health and reproduction as well as accumulates in 
				fish muscle tissues which may cause human health hazard. 
				
				Keywords: 
				
				biochemical, hematological, hormonal, Nile tilapia, nonylphenol. 
 
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