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Biochemical Changes in Hybrid Catfish (Heterobranchus bidorsalis,♂ x Clarias gariepinus,♀) Treated with Nuracron

应用与环境生物学报 2010年第3期16卷 353-357页

作者： GABRIEL Ugwemorubong Ujagwung obomanu faithwin gamalie EDORI Onisogen Simon Department of Fisheries and Aquatic Environment Rivers State University of Science & Technology P.M.B 5080 Port Harcourt 5000001 Nigeria Department of Chemistry Rivers State University of Science & Technology P.M.B 5080 Port Harcourt 5000001 Nigeria Department of Chemistry Rivers State University of Education P.M.B. 5047 Rumuolameni Port Harcourt. 5000001 Nigeria

The effects of sublethal levels of nuracron,dimethylphosphate-3-hydroxy-N-methyl-cis-crotonamide(0,0.625× 10-6,1.25×10-6,2.5×10-6,5.0×10-6 and 10.0×10-6) on biochemical changes(aspartate transaminase,AST,E.C.2.***.1.1;alanine transaminase,ALT;2.***.2.2;alkaline phosphatase,ALP,EC 3.***.3.1) in the organs(kidney,liver,gill) and muscle tissues of hybrid catfi sh Heterobranchus bidorsalis,♂× Clarias gariepinus,♀ [mean weight,(277.76±53.11) g SD;mean total length,(35.69±2.80) cm,SD] were studied after a 23 d exposure in a renewal bioassay under laboratory ***,nuracron inhibited AST,ALT and ALP activities in all the exposure concentrations,with ALT activity being mostly *** most elicited enzyme was ALP in the kidney [(4 052.67±1610.45) IU/L],followed by AST in the muscle [(908.44±218.34) IU/L] and ALT in the liver [(160.29±73.68) IU/L].The ALP activity was 30.24 and 6.53 times greater than that of ALT and *** highest inhibition for AST(43.65%),ALT(47.88%) and ALP(57.98%) occurred at 10×10-6,0.625×10-6 and 2.5×10-6,*** activities of the enzymes in all the organs did not show any direct relationship with the exposure concentrations of the *** activity in the muscle generally suffered the most compared with the other *** activities of enzymes in the liver were generally inhibited,with elevation at 5.0×10-6 for all the *** lower concentrations of nuracron(0.625 ×10-6～2.5×10-6) caused elevation in the activities of ALP,but the reverse was the case with the higher concentrations;these of AST and ALT were *** relative activities of the various enzymes in the organs showed that the order for AST was liver>muscle>kidney>gill;that for ALT:liver>kidney,muscle>gill and that for ALP:kidney>gill>liver and ***,for AST and ALT the activities in the organs of the exposed fi sh peaked at 5.0×10-6 *** alteration in the activities of the enzymes indicated that the extract interfered with the Kreb's c

关键词： aspartate transaminase alanine transaminase alkaline phosphatase hybrid catfi sh nuracron

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