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399456 occurrences (No.44 in the rank) during 5 years in the PubMed. [no cache] 500 found

176) Finally, the SWCNTs did not evoke significant in vivo micronuclei frequencies in the polychromatic erythrocytes of an imprinting control region mice at 25-100 mg/kg.

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PMID:23552264 DOI:10.1177/0748233713483201

2015 Toxicology and industrial health

* Evaluation of in vitro and in vivo genotoxicity of single-walled carbon nanotubes.

- Single-walled carbon nanotubes (SWCNTs) have extensive potential industrial applications due to their unique physical and chemical properties; yet this also increases the chance of human and environment exposure to SWCNTs. Due to the current lack of hazardous effect information on SWNCTs, a standardized genotoxicity battery test was conducted to clarify the genetic toxicity potential of SWCNTs (diameter: 1-1.2 nm, length: ∼20 μm) according to Organization for Economic Cooperation and Development test guidelines 471 (bacterial reverse mutation test), 473 (in vitro chromosome aberration test), and 474 (in vivo micronuclei test) with a good laboratory practice system. The test results showed that the SWCNTs did not induce significant bacterial reverse mutations at 31.3-500 μg/plate in Salmonella typhimurium strains TA98, TA100, TA1535, and TA1537 or in Escherichia coli strain WP2uvrA, with and without a metabolic activation system. Furthermore, the in vitro chromosome aberration test showed no significant increase in structural or numerical chromosome aberration frequencies at SWCNT dose levels of 12.5-50 μg/ml in the presence and absence of metabolic activation. However, dose-dependent cell growth inhibition was found at all the SWCNT dose levels and statistically significant cytotoxic effects observed at certain concentrations in the presence and absence of metabolic activation. Finally, the SWCNTs did not evoke significant in vivo micronuclei frequencies in the polychromatic erythrocytes of an imprinting control region mice at 25-100 mg/kg. Thus, according to the results of the present study, the SWCNTs were not found to have a genotoxic effect on the in vitro and in vivo test systems.

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(1)96 group	(11)5 measures	(21)3 region,	(31)2 eyes
(2)34 and	(12)5 participants	(22)3 system	(32)2 levels
(3)29 null	(13)4 (P	(23)3 was	(33)2 mice
(4)29 region	(14)4 in	(24)3 with	(34)2 milk-LNS,
(5)24 of	(15)4 is	(25)2 NP	(35)2 practices
(6)21 groups	(16)4 over	(26)2 activities	(36)2 strategies
(7)17 group,	(17)4 regions	(27)2 but	(37)2 were
(8)9 the	(18)4 subjects	(28)2 donkeys
(9)7 group)	(19)3 a	(29)2 donkeys,
(10)7 study	(20)3 or	(30)2 during

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--- WordNet output for control --- =>1.管理する, 制御する, 統制する, 抑える, 2.コントロール, 実験対象, 管理, 対照標準 Overview of noun control The noun control has 11 senses (first 9 from tagged texts) 1. (19) control -- (power to direct or determine; "under control") 2. (16) control -- (a relation of constraint of one entity (thing or person or group) by another; "measures for the control of disease"; "they instituted controls over drinking on campus") 3. (7) control -- ((physiology) regulation or maintenance of a function or action or reflex etc; "the timing and control of his movements were unimpaired"; "he had lost control of his sphincters") 4. (5) control condition, control -- (a standard against which other conditions can be compared in a scientific experiment; "the control condition was inappropriate for the conclusions he wished to draw") 5. (5) control -- (the activity of managing or exerting control over something; "the control of the mob by the police was admirable") 6. (4) dominance, ascendance, ascendence, ascendancy, ascendency, control -- (the state that exists when one person or group has power over another; "her apparent dominance of her husband was really her attempt to make him pay attention to her") 7. (3) restraint, control -- (discipline in personal and social activities; "he was a model of polite restraint"; "she never lost control of herself") 8. (2) command, control, mastery -- (great skillfulness and knowledge of some subject or activity; "a good command of French") 9. (1) control, controller -- (a mechanism that controls the operation of a machine; "the speed controller on his turntable was not working properly"; "I turned the controls over to her") 10. control -- (a spiritual agency that is assumed to assist the medium during a seance) 11. control -- (the economic policy of controlling or limiting or curbing prices or wages etc.; "they wanted to repeal all the legislation that imposed economic controls") Overview of verb control The verb control has 8 senses (first 4 from tagged texts) 1. (28) control, command -- (exercise authoritative control or power over; "control the budget"; "Command the military forces") 2. (20) control, hold in, hold, contain, check, curb, moderate -- (lessen the intensity of; temper; hold in restraint; hold or keep within limits; "moderate your alcohol intake"; "hold your tongue"; "hold your temper"; "control your anger") 3. (7) operate, control -- (handle and cause to function; "do not operate machinery after imbibing alcohol"; "control the lever") 4. (1) manipulate, keep in line, control -- (control (others or oneself) or influence skillfully, usually to one's advantage; "She manipulates her boss"; "She is a very controlling mother and doesn't let her children grow up"; "The teacher knew how to keep the class in line"; "she keeps in line") 5. control, verify -- (check or regulate (a scientific experiment) by conducting a parallel experiment or comparing with another standard; "Are you controlling for the temperature?") 6. control -- (verify by using a duplicate register for comparison; "control an account") 7. see, check, insure, see to it, ensure, control, ascertain, assure -- (be careful or certain to do something; make certain of something; "He verified that the valves were closed"; "See that the curtains are closed"; "control the quality of the product") 8. master, control -- (have a firm understanding or knowledge of; be on top of; "Do you control these data?") --- WordNet end ---