Results 21 to 30 of about 386 (118)

Pyrrolizidine Alkaloids and Fatty Acids from the Endemic Plant Species Rindera umbellata and the Effect of Lindelofine-N-oxide on Tubulin Polymerization

Molecules, 2013
The examination of the aerial parts, roots, and seeds of the endemic plant Rindera umbellata is reported in this paper for the first time. Phytochemical investigation of R.
Vlatka V. Vajs, Vele V. Tešević, Snežana D. Nikolić-Mandić, Snežana S. Trifunović, Miroslav M. Novaković, Ljubodrag V. Vujisić, Ivan M. Vučković, Milena R. Simić, Boris M. Mandić, Slobodan M. Milosavljević   +9 more
doaj   +1 more source

Phytochemistry, Toxicology and Therapeutic Value of Petasites hybridus Subsp. Ochroleucus (Common Butterbur) from the Balkans

Plants, 2020
Petasites hybridus (Common butterbur) is extensively used in traditional medicine, and is currently gaining interest and popularity as a food supplement and for its medicinal properties.
Tatjana Mihajilov-Krstev, Boris Jovanović, Bojan Zlatković, Jelena Matejić, Jelena Vitorović, Vladimir Cvetković, Budimir Ilić, Ljubiša Đorđević, Nataša Joković, Dragoljub Miladinović, Tatjana Jakšić, Nemanja Stanković, Vesna Stankov Jovanović, Nirit Bernstein   +13 more
doaj   +1 more source

Pyrrolizidine alkaloids of senecio sp from Peru

Química Nova, 2011
Six pyrrolizidine alkaloids (PAs) (two saturated macrocyclic, three unsaturated macrocyclic and one unsaturated seco-macrocyclic) were isolated from native Peruvian Senecio species.
Liliana Ruiz Vásquez and Matías Reina Artiles, Azucena González Coloma, Raimundo Cabrera Pérez, Lastenia Ruiz Mesia   +3 more
doaj   +1 more source

Senecio ovatus poisoning in a horse - A case report

Veterinární Medicína
This study describes a case of poisoning by pyrrolizidine alkaloids in a horse. To the best of the author's knowledge, this is the first confirmed case of Senecio ovatus poisoning.
A Kopecka, T Novotna, Z Svobodova, Z Drabkova   +3 more
doaj   +1 more source

Flavin-dependent monooxygenases as a detoxification mechanism in insects: new insights from the arctiids (lepidoptera). [PDF]

PLoS ONE, 2010
Insects experience a wide array of chemical pressures from plant allelochemicals and pesticides and have developed several effective counterstrategies to cope with such toxins.
Sven Sehlmeyer, Linzhu Wang, Dorothee Langel, David G Heckel, Hoda Mohagheghi, Georg Petschenka, Dietrich Ober   +6 more
doaj   +1 more source

Lithium Diisopropylamide‐Mediated Ring‐Opening of Tetrahydrofuran in the Synthesis of Polyhydroxylated Indolizidines

European Journal of Organic Chemistry, EarlyView.
Chiral tri‐ and pentahydroxy spirocyclopentane‐indolizidines were synthesized using lithium diisopropylamide “LDA” promoted diallylation and tetrahydrofuran “THF” ring‐opening in a one‐pot procedure as a key step. The sequence leading to the targeted hydroxy‐spiroindolizidines was achieved by cis‐dihydroxylation followed by reduction of the enamine and
Paula Fraňová, Peter Šafář, Marchalín Štefan, Petra Pažitná, Ivana Žídeková, Ján Moncol, Adam Daïch   +6 more
wiley   +1 more source

Pyrrolizidine alkaloids: An update on their metabolism and hepatotoxicity mechanism

Liver Research, 2019
Pyrrolizidine alkaloids (PAs) are among the most hepatotoxic natural compounds that are widely distributed throughout the world. Most PAs are metabolically activated to trigger toxicity.
Jie Xu, Weiqian Wang, Xiao Yang, Aizhen Xiong, Li Yang, Zhengtao Wang   +5 more
doaj   +1 more source

Evaluation of sunn hemp performance and nutritive value in Maine, USA

Grassland Research, EarlyView.
Abstract Background Sunn hemp (Crotalaria juncea L. and Crotalaria ochroleuca G. Don) was evaluated as a warm‐season legume to mitigate the “summer slump” in Maine's forage production caused by heat and moisture deficit stress. Methods This study compared three cultivars: “Crescent Sunn,” “Loei,” and “Red Mini,” at 60 and 90 days after seeding over the
Jaime Garzon, Edgar Cardenas
wiley   +1 more source

A Miniaturized QuEChERS Method Combined with Ultrahigh Liquid Chromatography Coupled to Tandem Mass Spectrometry for the Analysis of Pyrrolizidine Alkaloids in Oregano Samples

Foods, 2020
Recent and unexpected food alerts about relatively high amounts of pyrrolizidine alkaloids in oregano samples have stressed the need to develop analytical strategies to ensure food safety in this type of foodstuff.
Sergio Izcara, Natalia Casado, Sonia Morante-Zarcero, Isabel Sierra   +3 more
doaj   +1 more source

Observation of Trigona recursa Smith (Hymenoptera: Apidae) Feeding on Crotalaria micans Link (Fabaceae: Faboideae) in a Brazilian Savanna Fragment

Sociobiology, 2013
In this paper we present observations of individuals of the bee species Trigona recursa feeding on the fruits of Crotalaria micans. This plant, which contains pyrrolizidine alkaloids, is known to be toxic to humans, mammals and poultry.
Thiago Mateus Rocha dos Santos, Julie Teresa Shapiro, Patricia S. Shibuya, Camila Aoki   +3 more
doaj   +3 more sources