uuid:6624bbb8-b5d6-44be-9b5c-0e69884f17df Methyl isobutyl ketone and methyl ethyl ketone in urine as biological markers of occupational exposure to these solvents at low levels. LEL(@200 F): 1.2% (10% LEL(@200 F), 1,200 ppm). This may be a conservative value due to the lack of relevant acute toxicity data for workers exposed to concentrations above 500 ppm. Please enable it to take advantage of the complete set of features! There was equivocal evidence of carcinogenic activity of methyl isobutyl ketone in female F344/N rats based on the occurrence of renal mesenchymal tumors in the 1,800 ppm group. National Center for Biotechnology Information, Unable to load your collection due to an error, Unable to load your delegates due to an error.  |  Int J Toxicol. 2003 Feb;76(1):17-23. doi: 10.1007/s00420-002-0374-9. Epub 2002 Sep 18. 1. Further studies on sensory response to certain industrial solvent vapors. 98-83-9) in F344/N rats and B6C3F1 mice (inhalation studies). Neuropathological changes in the most distal portions of the tibial and ulnar nerves were observed in young adult rats which inhaled 1500 ppm MIBK for up to 5 months. Epub 2008 Aug 20. National Center for Biotechnology Information, Unable to load your collection due to an error, Unable to load your delegates due to an error. 1964]. In the extended evaluation of the kidney, renal tubule adenomas and renal tubule hyperplasia occurred in all groups of exposed male rats. Mode of action and human relevance analysis for nuclear receptor-mediated liver toxicity: A case study with phenobarbital as a model constitutive androstane receptor (CAR) activator. 2008 Feb 28;244(2-3):209-19. doi: 10.1016/j.tox.2007.11.014. Final report on the safety assessment of capsicum annuum extract, capsicum annuum fruit extract, capsicum annuum resin, capsicum annuum fruit powder, capsicum frutescens fruit, capsicum frutescens fruit extract, capsicum frutescens resin, and capsaicin. Final report on the safety assessment of Trichloroethane. Short-term exposure guidelines: None developed. Vol. Find NCBI SARS-CoV-2 literature, sequence, and clinical content: https://www.ncbi.nlm.nih.gov/sars-cov-2/. Clipboard, Search History, and several other advanced features are temporarily unavailable. In: Hygienic guide series. Male and female F344/N rats and B6C3F1 mice were exposed to methyl isobutyl ketone (greater than 99% pure) by inhalation for 2 … National Center for Biotechnology Information, Unable to load your collection due to an error, Unable to load your delegates due to an error. Crit Rev Toxicol. 2007;26 Suppl 1:3-106. doi: 10.1080/10915810601163939. Cincinnati, OH: American Conference of Governmental Industrial Hygienists, pp. Natl Toxicol Program Tech Rep Ser. MIBK was not toxic via the oral or dermal route of exposure in acute, short-term, or subchronic animal studies, except that nephrotoxicity was observed in rats dosed with 1 g/kg in a short-term study. Constitutive androstane receptor (CAR) nuclear receptor-mediated activation has been hypothesized as the MOA for MIBK-induced mouse liver tumorigenesis. A depression of the vestibulo-oculomotor reflex was seen with intravenous infusion of MIBK (in an emulsion) at 30 microM/kg/min in female rats. <>stream Am Ind Hyg Assoc J 27:209-211.  |  FUNDAMENTAL AND APPLIED TOXICOLOGY 9, 380-388 (1987) A 14-Week Vapor Inhalation Toxicity Study of Methyl Isobutyl Ketone' RICHARD D. PHILLIPS, *,2 ELIZABETH J. MORANJ DAROL E. DODD,$ EDWARD H. FOWLER,t CHRISTINA D. KARY,3 AND JOHN O'DONOGHUE 11 *Exxon Biomedical Sciences, Inc., East Millstone, New Jersey 08873; tChemical Manufacturers Association, Washington, … Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website.  |  1992 Oct;19(3):453-73. doi: 10.1016/0272-0590(92)90185-k. The incidence of adrenal medulla hyperplasia in the 1,800 ppm males was significantly increased. NIOSH REL: 50 ppm (205 mg/m3) TWA, 75 ppm (300 mg/m3) STEL, Current OSHA PEL: 100 ppm (410 mg/m3) TWA, 1989 OSHA PEL: 50 ppm (205 mg/m3) TWA, 75 ppm (300 mg/m3) STEL, 1993-1994 ACGIH TLV: 50 ppm (205 mg/m3) TWA, 75 ppm (307 mg/m3) STEL. %���� The volunteers were exposed (2h, 50 W) in an exposure chamber on four different occasions to about 10, 100 and 200 mg/m3 MIBK and to a combination of about 100 mg/m3 MIBK and 150 mg/m3 toluene. Methyl isobutyl ketone. There were no significant effects from exposure on the performance of a simple reaction time task or a test of mental arithmetic. There was some evidence of carcinogenic activity of methyl isobutyl ketone in male and female B6C3F1 mice based on increased incidences of liver neoplasms. Pinnacle On day 1, mice were implanted with osmotic mini-pumps containing 5-Bromo-2-deoxyuridine (BrdU) 1 h following exposure and humanely euthanized 1-3 h following the final exposure. [From ACGIH [1991]. Clinical observations and blood chemistry tests among workers exposed to the effect of a complex ketone methyl-isobutyl-ketone. USA.gov.  |  The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website. The relative pulmonary uptake of MIBK was about 60% and the total uptake increased linearly with increasing exposure concentration. To further investigate the MOA for MIBK-induced murine liver tumors, male and female B6C3F1, C57BL/6, and CAR/PXR Knockout (KO) mice were exposed to either 0 or 1800 ppm MIBK for 6 h/day, 5 days/week for a total of 10 days. COVID-19 is an emerging, rapidly evolving situation. There was evidence of treatment-related maternal toxicity only at the highest concentration tested. 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