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270181 occurrences (No.97 in the rank) during 5 years in the PubMed. [no cache] 500 found

221) Mitochondrial respiration was significantly increased 2 weeks after injection of 10% OC-Fe3O4 NPs compared to controls, but the effect was transient.

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PMID:23763576 DOI:10.3109/17435390.2013.815285

2015 Nanotoxicology

* Health effects of selected nanoparticles in vivo: liver function and hepatotoxicity following intravenous injection of titanium dioxide and Na-oleate-coated iron oxide nanoparticles in rodents.

- The study determined the effect of intravenous administration of acutely toxic or sub-lethal doses of Na-oleate-coated Fe3O4 (OC-Fe3O4) nanoparticles (NPs) on liver structure and function in Wistar rats, compared to titanium dioxide (TiO2) NPs and saline-injected controls. The acute study, using a modified OECD 425 progressive dosing procedure, found LD50 values of 59.22 and 36.42 mg/kg for TiO2 and OC-Fe3O4 NPs, respectively. In the sub-lethal study, rats were either injected with saline (negative controls), a sub-lethal reference (0.592 mg/kgTiO2 NPs, equal to 1% of LD50 on a body weight basis) or OC-Fe3O4 NPs in doses equivalent to 0.1, 1 or 10% of the LD50, respectively (corresponding to 0.0364, 0.364 and 3.64 mg Fe3O4/kg body weight). Animals were sampled 24 h, 1, 2 and 4 weeks post-injection for adverse effects. Mitochondrial respiration was significantly increased 2 weeks after injection of 10% OC-Fe3O4 NPs compared to controls, but the effect was transient. Cholesterol and triacylglycerol concentrations in the liver tissue did not increase in any treatment. There were some disturbances to antioxidant enzymes after OC-Fe3O4 NPs treatment in the livers of animals 1 week post-exposure; with the most sensitive changes occurring in glutathione peroxidase (GPx) and glutathione S-transferase (GST) activities. Lipidosis and mild necrosis with changes in sinusoid space were also observed in histological sections of the liver. Overall, these data suggest that the liver likely retains functional integrity with acute and sub-lethal doses of OC-Fe3O4 NPs, albeit with some stimulation of redox defences and evidence of some tissue injury.

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(1)105 the	(10)6 conventional	(19)3 group	(28)2 groups
(2)23 those	(11)5 controls,	(20)3 pure	(29)2 its
(3)19 control	(12)5 placebo	(21)2 TCDD	(30)2 long
(4)14 a	(13)5 untreated	(22)2 age-matched	(31)2 non-Hispanic
(5)12 that	(14)4 Exo(Normoxic)	(23)2 baseline	(32)2 non-transgenic
(6)10 controls	(15)4 all	(24)2 bur-prepared	(33)2 people
(7)10 other	(16)4 patients	(25)2 children	(34)2 plain
(8)9 healthy	(17)3 an	(26)2 controls),	(35)2 previous
(9)9 their	(18)3 drug	(27)2 experimental	(36)2 vehicle

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--- WordNet output for compared --- =>前年同期比で(は) Overview of verb compare The verb compare has 4 senses (first 3 from tagged texts) 1. (57) compare -- (examine and note the similarities or differences of; "John compared his haircut to his friend's"; "We compared notes after we had both seen the movie") 2. (12) compare -- (be comparable; "This car does not compare with our line of Mercedes") 3. (9) compare, liken, equate -- (consider or describe as similar, equal, or analogous; "We can compare the Han dynasty to the Romans"; "You cannot equate success in financial matters with greed") 4. compare -- (to form the comparative or superlative form on an adjective or adverb) --- WordNet end ---