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Open AccessJournal ArticleDOI

Inhibition of plant fatty acid synthesis by nitroimidazoles.

A. V. M. Jones, +3 more
- 15 Jul 1981 - 
- Vol. 198, Iss: 1, pp 193-198
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TLDR
The mechanism of inhibition of plant fatty acid synthesis by nitroimidazoles is discussed and the possible relevance of these findings to their neurotoxicity is suggested.
Abstract
1. The effect of the addition of a number of nitroimidazoles was tested on fatty acid synthesis by germinating pea seeds, isolated lettuce chloroplasts and a soluble fraction from pea seeds. 2. All the compounds tested had a marked inhibition on stearate desaturation by lettuce chloroplasts and on the synthesis of very-long-chain fatty acids by pea seeds. 3. In contrast, the effect of the drugs on total fatty acid synthesis from [14C]acetate in chloroplasts was related to the compound's electron reduction potentials. 4. Of the compounds used, only metronidazole had a marked inhibition on palmitate elongation in the systems tested. 5. The mechanism of inhibition of plant fatty acid synthesis by nitroimidazoles is discussed and the possible relevance of these findings to their neurotoxicity is suggested.

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TL;DR: The mechanism of the trichomonicidal activity of metronidazole and other 5-nitroimidazoles appears to depend on the ferredoxin-mediated reduction of their nitro group, with generation of a reactive metabolite or metabolites which interact with DNA leading to a subsequent inhibition of nucleic acid and protein synthesis.
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DissertationDOI

Structure Elucidation and Isotopic Labeling Experiments Provide Insights into the Biosynthesis of Three Phytochemicals: Alkamides, Avenacin, and Hydroxylated Fatty Acids

TL;DR: In this paper, the authors reported the identification of metabolites for three lipid-related pathways and insights into their origins, including the origin of the first branched-chained amino acid decarboxylase.
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Radiosensitizing and Cytocidal Effects of Misonidazole: Evidence for Separate Modes of Action

TL;DR: Radiosensitization by short exposures to sublethal doses of misonidazole represents a two-component effect composed of true dose modification and dose additive damage interactions, but these additive effects must occur at a site different from the cellular structure responsible for direct drug-induced cell death.
Book ChapterDOI

A Leptomeningeal Protease Releasing the β Protein from the β Protein Precursor of Alzheimer’s Disease

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