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566982 occurrences (No.17 in the rank) during 5 years in the PubMed. [no cache] 500 found

305) Animals were sampled 24 h, 1, 2 and 4 weeks post-injection for adverse effects.

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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)251 of	(8)5 to	(15)3 that	(22)2 models
(2)52 on	(9)4 are	(16)3 with	(23)2 observed
(3)29 null	(10)4 such	(17)2 at	(24)2 regression
(4)22 in	(11)3 between	(18)2 due	(25)2 through
(5)16 and	(12)3 from	(19)2 has
(6)13 were	(13)3 induced	(20)2 include
(7)7 for	(14)3 may	(21)2 limited

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--- WordNet output for effects --- =>個人資産 Overview of noun effects The noun effects has 1 sense (no senses from tagged texts) 1. effects, personal effects -- (property of a personal character that is portable but not used in business; "she left some of her personal effects in the house"; "I watched over their effects until they returned") Overview of noun effect The noun effect has 6 senses (first 5 from tagged texts) 1. (101) consequence, effect, outcome, result, event, issue, upshot -- (a phenomenon that follows and is caused by some previous phenomenon; "the magnetic effect was greater when the rod was lengthwise"; "his decision had depressing consequences for business"; "he acted very wise after the event") 2. (11) impression, effect -- (an outward appearance; "he made a good impression"; "I wanted to create an impression of success"; "she retained that bold effect in her reproductions of the original painting") 3. (9) effect -- (an impression (especially one that is artificial or contrived); "he just did it for effect") 4. (2) effect, essence, burden, core, gist -- (the central meaning or theme of a speech or literary work) 5. (1) effect, force -- ((of a law) having legal validity; "the law is still in effect") 6. effect -- (a symptom caused by an illness or a drug; "the effects of sleep loss"; "the effect of the anesthetic") Overview of verb effect The verb effect has 2 senses (first 2 from tagged texts) 1. (17) effect, effectuate, set up -- (produce; "The scientists set up a shock wave") 2. (3) effect -- (act so as to bring into existence; "effect a change") --- WordNet end ---