The cover photo describing the crystal structure of Na5YSi4O12 with glass-ceramic Na+ superionic conductors. As discussed by Toshinori Okura, these glass-ceramic conductors have great potential and are one of the most important groups of solid electrolytes, not only because of its practical usefulness for advanced batteries but also for its three-dimensional ionic conducting nature.
TiO2 nanoparticles induced oxidative stress mediated DNA damage in the liver of adult male Wistar rats
Dasal Vasantharaja1*, Venugopal Ramalingam1, Shanmugam Thangapandiyan2, Nagarajan Sridhar2, Gaddam Dayanand Reddy3
1Department of Zoology, Kanchi Mamunivar Centre for Post Graduate Studies (Pondicherry University), Lawspet, Puducherry 605008, India
2Department of Zoology, Annamalai University, Annamalai Nagar 608002, Tamil Nadu, India
3Department of Pharmacology, Siddha Central Research Institute, Chennai 600106, India
Adv. Mater. Lett., 2019, 10 (2), pp 145-150
DOI: 10.5185/amlett.2019.1532
Publication Date (Web): Dec 19, 2018
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E-mail: vasaini20@gmail.com
Nanoparticles (NPs) are extensively being used in modern life due to their distinctive properties like small size having large surface area. Titanium dioxide (TiO2) NPs are mostly used in cosmetic products, food additives, pharmaceuticals and electronics. They are capable of inducing oxidative stress in both animals and human. The intention of this study was to find out the hepatotoxic effect of TiO2 NPs on the male Wistar rats. The animals were divided in to three groups. First group received normal saline; Second group received TiO2 NPs (50 mg/kg/bw) for 14 days continuously, while third group received TiO2 NPs (100 mg/kg/bw) for the same duration. The increased levels of specific markers AST, ALT, ALP, LDH and GGT along with the TBARS, LOOH, CD and PC in the liver clearly shows the hepatotoxic action of TiO2. The hepatotoxic nature of TiO2 NPs was more evidenced by the diminished activity of antioxidant enzymes levels and also showed augmented DNA damage and fragmentation in hepatocytes. In conclusion, the data indicated that TiO2 NPs induced oxidative stress which produces hepatotoxicity in the rat liver.
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