Effect of different concentrations of Iron oxide nanoparticles in mice kidney
According to the data in Table 1, the kidney homogenate of male rats treated with varying concentrations of iron oxide nanoparticles demonstrated a concentration-dependent significant increase in hydrogen peroxide (H
2O
2) and thiobarbituric acid reactive substances (TBARS) when compared to the control and other iron oxide nanoparticle groups. However, compared to the control, the reduced glutathione level (GSH) was much lower.
Effect of different concentrations of Iron oxide nanoparticles in mice kidney
Table 2 displays information on the activity of the kidney antioxidant SOD, CAT, GPx, GR and GST enzymes. In comparison to the control group, the activity of antioxidant enzymes was significantly (P<0.05) reduced in a number of rat groups treated with iron oxide nanoparticles.
Effect of different concentrations of Iron oxide nanoparticles in mice kidney
Iron oxide nanoparticles at varying concentrations dramatically reduced the protein content of the rat kidney while considerably increasing serum urea and creatinine, as seen in Table 3, as compared to the control group.
Kidney histopathology
Fig 1 shows the morphological and histological changes in kidney tissues in all different study groups. The results showed the following:. G1: The photomicrograph of the kidney sections stained with H and E in the control mice showed normal histological characteristics of the renal tubules (Tb) and glomruli (g) in the cortical portion. G2: A photomicrograph of the kidney sections stained with H and E after receiving 50 mg/kg BW/day of Fe
2O
3-NPs revealed mild to severe vascular degeneration in the renal tubule lining epithelial cells. G3: Photomicrographs of the kidney sections stained with H and E after receiving a dose of Fe
2O
3-NPs at a rate of 25 mg/kg BW/day revealed pyknotic nuclei, considerable localized necrosis, and an increased incidence of vacuolar degeneration. G4: A photomicrograph of the kidney sections stained with H and E after receiving a dosage of Fe
2O
3-NPs at a rate of 10 mg/kg BW/day showed pyknotic nuclei, significant localized necrosis, and an increased incidence of vacuolar degeneration.
These enzymes function independently and are kept up properly in concert and in concert to preserve the integrity and proper operation of tissues and cells under typical physiological settings. In the current work, rats fed Fe
2O
3-NPs showed elevated levels of TBARS and H
2O
2 and lower levels of antioxidants such GSH, indicating enhanced oxidative stress in kidney tissues (
Ghaznavi et al., 2022. The higher use of GSH to fight potassium free radicals or the binding of the -SH group to nanoparticles may be the cause of the drop in GSH levels. These results were in agreement with both
(Reddy et al., 2017; Luo et al., 2024; Abd El-Aziz et al., 2024). In order to keep ROS at appropriate levels, An impressive array of defense mechanisms is provided by antioxidant enzymes. Even little variations
(Jomova et al., 2024). Because it catalyzes the conversion of superoxide radicals into H
2O
2,
(Pereira et al., 1994; Gusti et al., 2021; Al-Maliki et al., 2025). Together with glutathione peroxidase, the ubiquitous enzyme catalase is a key component of the antioxidant defense system and catalyzes the breakdown of H
2O
2 into H
2O. Mice given Fe
2O
3-NPs at varying dosages for three weeks in the current study demonstrated a considerable reduction in protein content and alkaline phosphatase (ALP) activity, but a rise in lactate dehydrogenase activity. Following kidney damage, these enzymes are released into the bloodstream, which causes an increase in their activity in serum samples
(Mishra et al., 2017; Al-Maliki et al., 2024). It’s common knowledge that lipid peroxidation weakens cell membranes, allowing cytoplasmic enzymes to leak out
(Bagchi et al., 1995). Thus, liver, kidney and lung necrosis may be the cause of the lower activity of these enzymes in serum shown in our investigation
(Wang et al., 2010; Zedan et al., 2023). Xinobiotics have been shown to alter the activities of several enzymes in various tissue organs. Normal histological structures of the glomruli and renal tubules in the cortical and medullary regions were found in the control rat group’s kidney sections stained with hematoxylin and eosin. Bowman’s capsule and proximal and distal convoluted tubules encircle the glomerulus, which is free of inflammatory alterations. A basic squamous epithelium is formed by cells in Bowman’s capsule’s outer or parietal layer. Because of their very diverse shapes, cells in the inner layer are invisible to histological routine staining. The glomerulei have an oval or circular form. The kidney segment showed modest to severe vascular degradation in the cortical zone of the renal tubule lining epithelial cells with pyknotic and karyolyzed nuclei following the injection of iron oxide nanoparticles. On the other hand, following the administration of iron oxide nanoparticles, kidney sections showed numerous abnormalities in the cortex and medulla renal structures, including the loss of the characteristic Malpighian corpuscles and the appearance of renal tubules with a wide lumen and degenerated epithelium, as well as pyknotic nuclei, increased incidence of vacuolar degeneration and noticeable congestion in the renal blood vessels (Fig 1). Numerous high-quality nanomaterials have surfaced as a result of the quick development of nanotechnology and because of their special biological characteristics, they are widely used in medicine, cosmetics, coatings, new materials, catalysts and many other fields to enhance existing products or create ones with new functions
(Balas et al., 2021; Saleh et al., 2024). Exposure to nanomaterials is getting more likely, but the safety concern is also growing more acute. According to early toxicological research, nanoparticles may have a negative effect on both the environment and human health
(Tate et al., 2009; Ghiath et al., 2025; Zedan et al., 2022).