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Trichloroethene metabolism

Eyre RJ, Stevens DK, Parker JC, et al. 1995a. Acid-labile adducts to protein can be used as indicators of the cysteine conjugate pathway of trichloroethene metabolism. J Toxicol Environ Health 46 443-464. [Pg.265]

Dekant W, Koob M, Henschler D. 1990. Metabolism of trichloroethene—vivo and in vitro evidence for activation by glutathione conjugation. Chem Biol Interact 73 89-101. [Pg.260]

It has been shown to metabolize trifluoroethene to glyoxylate, difluoroacetate, and the rearranged product trifluoroacetaldehyde (Fox et al. 1990). The last reaction is analogous to the formation of trichloroacetaldehyde from trichloroethene by the same strain (Oldenhuis et al. 1989). [Pg.378]

Mammalian cytochrome P450 2E1 was introduced into tobacco plants that were exposed to trichloroethene in hydroponic medium for 5 d. Trichloroethene epoxide was produced initially, and was rearranged to trichloroacetaldehyde, which was then reduced to trichloro-ethanol. This was found in samples of leaves, stems, and roots, but was absent in the control plants. Trichloroethanol was subsequently transported to the leaves where it was apparently metabolized (Doty et al. 2000). [Pg.606]

Both tetrachloroethene and pentachloroethane undergo subsequent hepatic metabolism. Pentachloroethane is reductively dechlorinated by microsomes to yield trichloroethene. (Reductive dechlorination was favored when there were three chlorines on one carbon and at least one chlorine on the vicinal carbon [Thompson et al. 1984], a characteristic shared by hexachloroethane and pentachloroethane). Trichloroethene and tetrachloroethene were then oxidized by hepatic enzymes to form trichloroethanol and trichloroacetic acid as terminal reaction products. Apparently additional dechlorination reactions can occur since labeled dichloroethanol, dichloroacetic acid, monochloroacetic acid, and oxalic acid have been... [Pg.77]

Illustrative Example 17.8 Evaluating the Co-Metabolic Biodegradation of Trichloroethene by Microorganisms Growing on Methane in a Well-Mixed Tank... [Pg.688]

In order to degrade trichloroethene (TCE) contaminating some groundwater at 5 /nM (660 ppb), you want to inject toluene (for structure see P 17.1) and 02 below ground and grow a bacterial community capable of growing on the toluene and simultaneously co-metabolizing the TCE (after McCarty et al., 1998.)... [Pg.772]

Hybrid poplars are able to transport and metabolize various xenobiotics (a) trichloroethene is metabolized to trichloroethanol and trichloroacetate (Newman et al. 1997), (b) atrazine is metabolized by reactions involving dealkylation and hydrolytic dechlorination to yield 2-hydroxy-4,6-diamino-l,3,5-triazine (Burken and Schnoor 1997). [Pg.137]

Probes for toluene-2-monooxygenase have been used to evaluate the potential number of trichloroethene-degrading organisms in an aquifer (Fries et al. 1997b). In this study, repetitive extragenic palindromic PCR (REP-PCR) (de Bruijn 1992) of isolates was used to classify their metabolic capability. [Pg.459]

This, like trichloroethene, is metabolized to trichloroacetic acid. [Pg.194]

The mechanism of reductive dehalogenation of polyhalogenated compounds by microsomal cytochrome P450 has been studied in detail [22]. The main products of the in vitro metabolism of hexa- and pentachloroethane were tetra- and trichloroethene, respectively. In this case, the reductive dehalogenation probably proceeds by two sequential one electron reductions forming first a radical and then a carbanion. The carbanion may undergo... [Pg.86]


See other pages where Trichloroethene metabolism is mentioned: [Pg.63]    [Pg.98]    [Pg.197]    [Pg.603]    [Pg.358]    [Pg.773]    [Pg.265]    [Pg.318]    [Pg.794]    [Pg.838]    [Pg.301]    [Pg.250]   


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Trichloroethene

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