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Structural and Oxidative Changes in the Kidney of Crucian Carp Induced by Silicon-Based Quantum Dots
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Structural and Oxidative Changes in the Kidney of Crucian Carp Induced by Silicon-Based Quantum Dots
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Journal Article
Structural and Oxidative Changes in the Kidney of Crucian Carp Induced by Silicon-Based Quantum Dots
2012
Overview
Silicon-based quantum dots were intraperitoneally injected in Carassius auratus gibelio specimens and, over one week, the effects on renal tissue were investigated by following their distribution and histological effects, as well as antioxidative system modifications. After three and seven days, detached epithelial cells from the basal lamina, dilated tubules and debris in the lumen of tubules were observed. At day 7, nephrogenesis was noticed. The reduced glutathione (GSH) concentration decreased in the first three days and started to rise later on. The superoxide dismutase (SOD) activity increased only after one week, whereas catalase (CAT) was up-regulated in a time-dependent manner. The activities of glutathione reductase (GR) and glutathione peroxidise (GPX) decreased dramatically by approximately 50% compared to control, whereas the glutathione-S-transferase (GST) and glucose-6-phosphate dehydrogenase (G6PDH) increased significantly after 3 and 7 days of treatment. Oxidative modifications of proteins and the time-dependent increase of Hsp70 expression were also registered. Our data suggest that silicon-based quantum dots induced oxidative stress followed by structural damages. However, renal tissue is capable of restoring its integrity by nephron development.
Publisher
MDPI AG,Molecular Diversity Preservation International (MDPI)
