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INTRODUCTIONBecause of their beneficial qualitiesand its high activity against a broad spectrumof insect pests, synthetic pyrethroids have attractedfarmers and health departments to usethem in agriculture (Gu et al., 2007; Kakko etal., 2003; Villarini et al., 1998). One such pyrethroidthat has found wide acceptability andis extremely used is deltamethrin ((S)-α-cyano-3-phenoxybenzyl-(1R, 3R) - cis-3-(2.2-dibromovinyl)-2, 2- dimethyl cyclopropanecarboxylate). Deltamethrin (DM) is a non-composite and non-cumulative insecticidewith no fumigant action and stable biologicalactivity in the environment. All pyrethroidsdue to their lipophilicity are readily taken upby biological membranes and tissues (Oros etal., 2005). As such pyrethroid metaboliteshave been found in the urine of pregnantwomen (Berkowitz et al., 2003; Whyatt et al.,2002), urine of elementary-age children thatappear to be primarily the result of residentialexposure (Lu et al., 2006, 2009) and urine of67% of cohort preschool children with detectablelevels of the pyrethroid metabolite 3-phenoxybenzoic acid (Morgan et al., 2007).Various medical abnormalities in Chinesepopulation due to DM intoxication were alsoreported by He et al., (1989). There is also informationon pyrethroid contamination of surfacewater and stream bed sediment in agriculturalregions of California whose concentrationsare sufficient to cause toxicities to sediment-dwelling organisms (Starner et al.,2008).Acute toxicity data for DM in fishhave been published as a report of the WHO(1990). End effects of DM in different fishincluded effects on activities of Catalase, glutathioneperoxidase and glutathione reductase(Diana et al., 2007), Na+ K+-ATPase, fattyacid patterns of the phospholipids in erythrocyteplasma membrane (Kotkat et al., 1999),LDH, GOT and glucose (Balint et al., 1995),pathoanatomical changes (Svobodova et al.,2003), hypocalcemia (Srivastav et al., 2009),hyperexcitability and carbonic anhydrase enzymes(Ekinci and Beydemir, 2010), expressionof HSP70 (Ceyhun et al., 2010, Atamanalpet al., 2010), detoxifying enzymes liketotal CYP450 and EROD activities (Assis etal., 2009; Pimpão et al., 2007; Viran et al.,2003) and GABA receptors (Velisek et al.,2007). Studies with DM on mammals carriedout revealed alterations in P450 contents andP450 monooxygenases in rat (Dayal et al.,2003), inhibition of mitotic index and chromosomalaberrations in rats (Agarwal et al.,1994), tumour-initiating activity in mice(Shukla et al., 2001), DNA damage with micronucleiinduction (Villarini et al., 1998;Dolara et al., 1992), induction of sister chromatidexchange (SCE) in mouse (Chauhan etal., 1997), suppression of immune system(Kontreczky et al., 1997) and retardation ofgrowth, hypoplasia of the lungs, dilation of therenal pelvis and increase in placental weightKetika hamil tikus diperlakukan dari hari 6hari 15 kehamilan (Abdel Khalik et al.,1993). pada manusia juga DM diketahui menyebabkanDNA induksi kerusakan dan micronuclei dilimfosit (Kontreczky et al., 1997).
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