Results 181 to 190 of about 9,386 (216)

Regulation of oxylipin synthesis

Biochemical Society Transactions, 2000
Two very common groups of oxylipins formed in plants involve the conversion of fatty acid hydroperoxides, such as hydroperoxy-octadecatrienoic acid, into further metabolites by allene oxide synthase and hydroperoxide lyase. Both of these oxylipin branch pathways appear to be ubiquitous or nearly so in plants, but the relative activities of these two ...
D F, Hildebrand, M, Afitlhile, H, Fukushige   +2 more
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Oxylipins from Dracontium loretense

Journal of Natural Products, 2009
Four novel oxylipins (1-4) were isolated from the n-butanol extract of the corms of Dracontium loretense. Their structures were assigned by 1D and 2D NMR analyses and electrospray ionization multistage ion trap mass spectrometry (ESI-ITMS(n)) data. Relative configurations were assigned on the basis of combined analysis of homonuclear and heteronuclear (
Benavides A, Napolitano A, Bassarello C, Carbone V, GAZZERRO, Patrizia, Malfitano A, Saggese P, BIFULCO, Maurizio, PIACENTE, Sonia, PIZZA, Cosimo   +9 more
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Brominated Oxylipins and Oxylipin Glycosides from Red Sea Corals

European Journal of Organic Chemistry, 2002
AbstractEight new brominated oxylipins 1−8, including two glycosides, were isolated from the Red Sea invertebrates Dendrophyllia sp., Dendronephthya sp. (red variety), Dendronephthya sp. (yellow variety), and Tubipora musica. Their structures were elucidated mainly on the basis of NMR spectroscopic data.
Tomáš Řezanka, Valery M. Dembitsky
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Targeting esterified oxylipins by LC–MS - Effect of sample preparation on oxylipin pattern

Prostaglandins & Other Lipid Mediators, 2020
A major part of oxygenated metabolites of polyunsaturated fatty acids - i.e. eicosanoids and other oxylipins - in biological samples is found in the esterified form. Yet, their biological role is only poorly understood. For quantification of esterified oxylipins in biological samples current protocols mostly apply alkaline hydrolysis with or without ...
Annika I, Ostermann, Elisabeth, Koch, Katharina M, Rund, Laura, Kutzner, Malwina, Mainka, Nils Helge, Schebb   +5 more
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Oxylipin metabolism in response to stress

Current Opinion in Plant Biology, 2002
Oxylipins comprise a group of biologically active compounds whose structural diversity is generated by the coordinate action of lipases, lipoxygenases, and a group of cytochromes P450 that are specialized for the metabolism of hydroperoxy fatty acids. Research on oxylipins has focused mainly on the biosynthesis of the plant signaling molecule jasmonic ...
Gregg A Howe, Anthony L Schilmiller
exaly   +3 more sources

Oxylipin patterns in human colon adenomas

Prostaglandins, Leukotrienes and Essential Fatty Acids, 2021
Cyclooxygenase (COX)-derived prostaglandin E2 (PGE2) is an important lipid mediator in colorectal carcinoma (CRC) pathogenesis. Other lipid mediators derived from lipoxygenases (LOX) have also been implicated in neoplastic processes in the colon. In this study we aimed to characterize lipid mediators, so called oxylipins, in human colon adenomatous ...
Christoph, Schmöcker, Heike, Gottschall, Katharina M, Rund, Laura, Kutzner, Fabian, Nolte, Annika I, Ostermann, Dirk, Hartmann, Nils Helge, Schebb, Karsten H, Weylandt   +8 more
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Oxylipin covered ascospores of Eremothecium coryli

Antonie van Leeuwenhoek, 2005
Eremothecium coryli is known to produce intriguing spindle-shaped ascospores with long and thin whip-like appendages. Here, ultra structural studies using scanning electron microscopy, indicate that these appendages serve to coil around themselves and around ascospores causing spore aggregation.
N J, Leeuw, J L F, Kock, C H, Pohl, A S, Bareetseng, O M, Sebolai, M, Joseph, C J, Strauss, P J, Botes, P W J, van Wyk, S, Nigam   +9 more
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Oxylipin vanillyl acetals from Solanum lyratum

Fitoterapia, 2020
Four undescribed oxylipin vanillyl acetals with four stereogenic carbons were isolated from the herbs of Solanum lyratum. A comprehensive set of spectroscopic methods were used to elucidate the structures and relative configurations of 1-4. The absolute configurations of the naturally occurring compounds are assigned as 7S, 9'S, 10'S, 11'R at the site ...
Shuang-Shuang, Li, Qing-Bo, Liu, Yang-Yang, Zhang, Shao-Chun, Shi, Rui, Guo, Guo-Dong, Yao, Bin, Lin, Xiao-Xiao, Huang, Shao-Jiang, Song   +8 more
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Oxylipins and plant abiotic stress resistance

Biochemistry (Moscow), 2014
Oxylipins are signaling molecules formed enzymatically or spontaneously from unsaturated fatty acids in all aerobic organisms. Oxylipins regulate growth, development, and responses to environmental stimuli of organisms. The oxylipin biosynthesis pathway in plants includes a few parallel branches named after first enzyme of the corresponding branch as ...
T V, Savchenko, O M, Zastrijnaja, V V, Klimov   +2 more
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Biosynthesis of oxylipins in non-mammals

Progress in Lipid Research, 2009
Lipid peroxidation is common to all biological systems, appearing in developmentally-regulated processes and as a response to environmental changes. Products derived from lipid peroxidation are collectively named oxylipins. Initial lipid peroxidation may either occur by enzymatic or chemical reactions.
Alexandra, Andreou, Florian, Brodhun, Ivo, Feussner   +2 more
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