Rats given TMX in the current investigation had altered ALT and AST activity in comparison to the control group (Table 1). Following hepatocellular damage, the blood is released with these enzymes
(Gokcimen et al., 2007). It is well recognized that lipid peroxidation compromises the integrity of cellular membranes, allowing cytoplasmic enzymes to seep out
(Bagchi et al., 1995). It has been demonstrated that xinobiotics affect a wide range of enzyme activity in different tissue organs. This disruption in liver enzymes might be brought on by liver injury, changes in cell membrane permeability, or an increase or reduction in aminotransferase catabolism
(El-Shenawy et al., 2010; Kalender et al., 2010). In agreement with the present study
(Prasanthi et al., 2005) reported that fenvalerat; a pyrethroid insecticide and diazinon, an organophosphate. Due to their hydrophobic properties, pesticides have been shown in earlier research to mostly collect in biological membranes, particularly in phospholipid bilayers
(Alsahhaf et al., 2006). in internal organs rich in lipids, such as body fat, skin, liver, ovaries and parts of the central and peripheral nerve systems
(Gupta et al., 1999; Soderlund et al., 2002; Giri et al., 2018). The primary location of pesticide metabolism, where a high concentration of its metabolites accumulates, is the liver. Their harmful effects most likely resulted from the production of ROS, which damaged the cell’s numerous membrane components . In the current study, TMX and/or LC treatment might cause oxidative stress in the rat liver, as seen by increased amounts of TBARS and H
2O
2, as well as a reduction in GSH. This would cause more lipid peroxidation, release free radicals, damage to the hepatocellular membrane and ultimately result in liver damage. The results and comparison between thiamethoxam (TMX), lambda cyhalothrin and their combination are represented in Table 2. Results indicated that TBARS and H
2O
2 concentrations were significantly (P<0.05) increased, while GSH were significantly decreased in liver homogenate of rats treated with TMX and/or LC. Rats treated with both TMX plus LC showed more significant increase in TBARS and H
2O
2 levels, while GSH content was more significantly decreased as compared to control rat group. Table 3 showed the effect of TMX and/or LC on antioxidant enzymes in rat liver. The results showed significant inhibition in antioxidant enzyme activities in rat livers treated with TMX and LC in addition to more pronounced effect in the group treated with TMX+LC. After entering the environment, pesticides can cause oxidative stress by changing the body’s entire system of antioxidant defenses
(Banerjee et al., 2001) and antioxidant protection via enzymes
(Valavanidis et al., 2006). In agreement with these results discovered that the liver’s enzymatic defense mechanism was altered as a result of oxidative damage caused by fenvalerate
(Yarsan et al., 2002). The fluidity of the membrane is modulated by changes in phospholipids, fatty acids and cholesterol levels, which in turn affects the activity of the enzymes
(Nasuti et al., 2003). It has been demonstrated that brief exposure to sub-lethal doses of neonicotinoids in zebrafish livers affects GST’s capacity to prevent DNA damage and reduces GST activity while raising CAT activity
(Saraivaa et al., 2017). shown how brief exposure to low doses of TMX affects antioxidant defenses as seen by a drop in antioxidant enzyme activity and CAT activity
(Altuntas et al., 2003). By conjugating with SH-groups, like glutathione, GST detoxifies a range of electrophilic chemicals into less hazardous forms and also lowers lipid peroxides
(Mosialou et al., 1993). The lowered activity of GST may be the cause of the reduced liver GSH contents in rats treated with TMX and/or LC. In keeping with the current findings, a substantial drop in GST activity following a single oral cypermethrin dosage. Additionally
(Cervello et al., 1992). Proposed that the thiol (SH) group of glutathione is used by the GST enzyme to catalyze the reaction, neutralizing and increasing the solubility of the products. The current study’s findings of hepatorenal damage in rats exposed to TMX included abnormalities in the renal tubules and the loss of hepatic architecture. These findings concur with
(Ecobichon et al., 1996; Hasan et al., 2024) (Fig 1). Who reported that treatment of male albino mice with imidacloprid at a dose level of 15 mg/Kg/day/ for 15 days induced decrease in body weight and no mortality occurred during treatment period. High dose of 15 mg/Kg/day for 15 days Liver sections in rats treated with thiamethoxam, lambda cyhalothrin and their combination groups
(Kaur et al., 2006; Balani et al., 2011). It could be caused by the hepatocytes’ degeneration and necrosis, which is linked to a higher permeability of the cell membrane that releases transaminases into the bloodstream and subsequently causes a reduction in the amount of liver tissue. These results were connected with the ultrastructural and histological alterations seen in the mice’s liver by
(Arfat et al., 2014). Imidacloprid has been linked to oxidative stress and inflammation in rat liver and brain, according to prior studies
(Duzguner et al., 2010; Hasan et al., 2024) (Fig 1). Our results complement who documented that rats exposed to imidacloprid for a subchronic period of time developed moderate localized necrosis of the liver and hepatocellular injur.