Journal
ARHIV ZA HIGIJENU RADA I TOKSIKOLOGIJU-ARCHIVES OF INDUSTRIAL HYGIENE AND TOXICOLOGY
Volume 65, Issue 1, Pages 109-112Publisher
INST MEDICAL RESEARCH & OCCUPATIONAL HEALTH
DOI: 10.2478/10004-1254-65-2014-2416
Keywords
brain; HPLC; nitro-oxidative stress; pesticides; rats
Funding
- Commission of Scientific Research Projects of Ondokuz Mayis University [PYO.VET.1901.10.002]
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The aim of this study was to evaluate dichlorvos toxicity in terms of nitro-oxidative stress by determining 3-nitrotyrosine (3-NT) levels in the fore, mid, and hindbrain regions in acutely exposed rats. Male Sprague-Dawley rats were randomly allocated to three groups of eight. Group 1 was administered a single intraperitoneal dichlorvos dose of 1.8 mg kg(-1) (0.1xLD(50)) and group 2 a dose of 9 mg kg(-1) (0.5xLD(50)). The control group received 0.5 mL saline solution via the same route. 3-NT and tyrosine (TYR) levels were measured using high performance liquid chromatography with a photodiode array detector (HPLC-PDA) and expressed as a ratio of 3-NT to TYR. The 3-NT/1000 TYR ratios increased significantly in the fore-, mid- and hindbrains of the exposed groups compared to control (p < 0.01). In the forebrain, the increase was also significant between the treated groups. Our study has confirmed that acute exposure to dichlorvos leads to nitro-oxidative stress in the brain and that 3-NT may play a role in the mechanism of dichlorvos neurotoxicity.
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