PMID- 24095963 OWN - NLM STAT- MEDLINE DCOM- 20140210 LR - 20191210 IS - 1096-0333 (Electronic) IS - 0041-008X (Linking) VI - 273 IP - 3 DP - 2013 Dec 15 TI - A role for glutathione, independent of oxidative stress, in the developmental toxicity of methanol. PG - 508-15 LID - S0041-008X(13)00420-1 [pii] LID - 10.1016/j.taap.2013.09.020 [doi] AB - Oxidative stress and reactive oxygen species (ROS) have been implicated in the teratogenicity of methanol (MeOH) in rodents, both in vivo and in embryo culture. We explored the ROS hypothesis further in vivo in pregnant C57BL/6J mice. Following maternal treatment with a teratogenic dose of MeOH, 4 g/kg via intraperitoneal (ip) injection on gestational day (GD) 12, there was no increase 6h later in embryonic ROS formation, measured by 2',7'-dichlorodihydrofluorescin diacetate (DCFH-DA) fluorescence, despite an increase observed with the positive control ethanol (EtOH), nor was there an increase in embryonic oxidatively damaged DNA, quantified as 8-oxo-2'-deoxyguanosine (8-oxodG) formation. MeOH teratogenicity (primarily ophthalmic anomalies, cleft palate) also was not altered by pre- and post-treatment with varying doses of the free radical spin trapping agent alpha-phenyl-N-tert-butylnitrone (PBN). In contrast, pretreatment with L-buthionine-(S,R)-sulfoximine (BSO), an inhibitor of glutathione (GSH) synthesis, depleted maternal hepatic and embryonic GSH, and enhanced some new anomalies (micrognathia, agnathia, short snout, fused digits, cleft lip, low set ears), but not the most common teratogenic effects of MeOH (ophthalmic anomalies, cleft palate) in this strain. These results suggest that ROS did not contribute to the teratogenic effects of MeOH in this in vivo mouse model, in contrast to results in embryo culture from our laboratory, and that the protective effect of GSH in this model may arise from its role as a cofactor for formaldehyde dehydrogenase in the detoxification of formaldehyde. CI - (c) 2013. FAU - Siu, Michelle T AU - Siu MT AD - Division of Biomolecular Sciences, Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada. FAU - Shapiro, Aaron M AU - Shapiro AM FAU - Wiley, Michael J AU - Wiley MJ FAU - Wells, Peter G AU - Wells PG LA - eng GR - Canadian Institutes of Health Research/Canada PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131002 PL - United States TA - Toxicol Appl Pharmacol JT - Toxicology and applied pharmacology JID - 0416575 RN - 0 (Cyclic N-Oxides) RN - 0 (Free Radicals) RN - 0 (Reactive Oxygen Species) RN - 0 (Teratogens) RN - 131202-22-7 (buthionine sulfoximine ethyl ester) RN - 1982-67-8 (Methionine Sulfoximine) RN - 3I91332OPG (phenyl-N-tert-butylnitrone) RN - 88847-89-6 (8-Hydroxy-2'-Deoxyguanosine) RN - EC 1.2.- (Aldehyde Oxidoreductases) RN - EC 1.2.1.46 (formaldehyde dehydrogenase, glutathione-independent) RN - G9481N71RO (Deoxyguanosine) RN - GAN16C9B8O (Glutathione) RN - Y4S76JWI15 (Methanol) SB - IM MH - 8-Hydroxy-2'-Deoxyguanosine MH - Aldehyde Oxidoreductases/pharmacology MH - Animals MH - Chromatography, High Pressure Liquid MH - Cyclic N-Oxides/pharmacology MH - DNA Damage/drug effects MH - Deoxyguanosine/analogs & derivatives/metabolism MH - Dose-Response Relationship, Drug MH - Embryo, Mammalian/drug effects/metabolism MH - Female MH - Free Radicals/metabolism MH - Glutathione/*pharmacology MH - Male MH - Methanol/*toxicity MH - Methionine Sulfoximine/analogs & derivatives/pharmacology MH - Mice MH - Mice, Inbred C57BL MH - Oxidative Stress/*drug effects MH - Pregnancy MH - Reactive Oxygen Species/metabolism MH - Tandem Mass Spectrometry MH - Teratogens/toxicity OTO - NOTNLM OT - 2',7'-dichlorodihydrofluorescin diacetate OT - 5,5'-dithiobis-(2-nitrobenzoic acid) OT - 8-oxo-2'-deoxyguanosine OT - 8-oxodG OT - ADH1 OT - ADH3 OT - BSO OT - DCFH-DA OT - DMSO OT - DTNB OT - EtOH OT - FA OT - Formaldehyde OT - GD OT - GSH OT - GSSG OT - Glutathione OT - H(2)O(2) OT - HNE OT - HPLC OT - LC-MS/MS OT - MeOH OT - Methanol OT - NADPH oxidase OT - NF-kappaB OT - NOX OT - NTD OT - NZW OT - Na-FA OT - New Zealand White rabbits OT - Oxidative stress OT - PBN OT - RFU OT - ROS OT - Reactive oxygen species OT - Teratogenesis OT - alcohol dehydrogenase OT - alpha-phenyl-N-tert-butylnitrone OT - dimethyl sulfoxide OT - ethanol OT - formaldehyde dehydrogenase OT - formic acid OT - gestational day OT - high-performance liquid chromatography OT - hydrogen peroxide OT - hydroxynonenal OT - intraperitoneal OT - ip OT - l-buthionine-(S,R)-sulfoximine OT - liquid chromatography with tandem mass spectrometry OT - methanol OT - neural tube defect OT - nuclear factor transcription factor kappa-B OT - oxidized glutathione OT - reactive oxygen species OT - reduced glutathione OT - relative fluorescence units OT - sodium formate EDAT- 2013/10/08 06:00 MHDA- 2014/02/11 06:00 CRDT- 2013/10/08 06:00 PHST- 2013/05/03 00:00 [received] PHST- 2013/09/06 00:00 [revised] PHST- 2013/09/23 00:00 [accepted] PHST- 2013/10/08 06:00 [entrez] PHST- 2013/10/08 06:00 [pubmed] PHST- 2014/02/11 06:00 [medline] AID - S0041-008X(13)00420-1 [pii] AID - 10.1016/j.taap.2013.09.020 [doi] PST - ppublish SO - Toxicol Appl Pharmacol. 2013 Dec 15;273(3):508-15. doi: 10.1016/j.taap.2013.09.020. Epub 2013 Oct 2.