Results 61 to 70 of about 79,429 (193)
Supinidine Viridiflorates from the Roots of
Natural Product Communications, 2013 The alkaloid extract from the roots of Chromolaena pulchella provided two new pyrrolizidine alkaloids, elucidated as (-)-supinidine triviridiflorate ( 1 ) and (-)-supinidine diviridiflorate ( 2 ) based on their physical and spectroscopic properties ...
Mario A. Gómez-Hurtado +7 more
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Ecology and evolution of pyrazines in insects
Biological Reviews, Volume 101, Issue 4, Page 1937-1959, August 2026.ABSTRACT Chemical communication is the oldest and most widespread form of signalling among and within organisms. Among the many compounds involved in such communication, pyrazines – nitrogen‐containing heterocyclic molecules – are especially intriguing due to their widespread occurrence across the tree of life, from bacteria and fungi to insects and ...
Zowi Oudendijk +2 more
wiley +1 more source
Testing chemical defence based on pyrrolizidine alkaloids
, 2015 Pyrrolizidine alkaloids are considered the primary defence mechanism in aposematic ithomiine butterflies and arctiid moths. Despite evidence that pyrrolizidine alkaloids are effective against some invertebrate predators, proof for a protective function ...
Cardoso, MZ
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Drug Design, Development and Therapy, 2015 Hong Gao,1,* Jianqing Q Ruan,2,* Jie Chen,1 Na Li,2 Changqiang Q Ke,3 Yang Ye,3–5 Ge Lin,2,4,5 Jiyao Y Wang1,61Department of Gastroenterology, Zhongshan Hospital, Fudan University, Shanghai, People’s Republic of China; 2School of Biomedical ...
Gao H +7 more
doaj
Journal of Cellular and Molecular Medicine, Volume 30, Issue 15, August 2026.ABSTRACT Pulmonary arterial hypertension (PAH) is a progressive disease characterised by vascular remodelling. Inflammatory responses and oxidative stress have been shown to contribute to its progression. This study investigated the effects of a novel HIF‐1α‐miR‐663b axis on pulmonary arterial smooth muscle inflammation, oxidative stress and apoptosis ...
Le Shen +6 more
wiley +1 more source
Food Science &Nutrition, Volume 14, Issue 7, July 2026.Steviol Glycosides (E960) from Stevia rebaudiana: Technological Innovations, Safety Assessment, Regulatory Aspects and their Role in Sustainable Food Systems. ABSTRACT Stevia (Stevia rebaudiana Bertoni) is a small perennial herb widely recognized as a natural sweetener.
Aswin Sakthivel Manoharan +1 more
wiley +1 more source
THE PYRROLIZIDINE ALKALOIDS FROM SENECIO-RACEMOSUS
, 1991 Two new pyrrolizidine alkaloids, racemocine and racemonine, have been isolated from Senecio racemosus.
AHMED, W +4 more
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Food Science &Nutrition, Volume 14, Issue 7, July 2026.This study evaluated the short‐term effects of a standardized silver fir (Abies alba) branch extract (SFBE, Belinal) on biochemical markers of liver and kidney function in healthy adults. No statistically significant or clinically meaningful changes in hepatic or renal biomarkers were observed after 14 days of supplementation with 900 mg/day SFBE ...
Katja Schoss, Samo Kreft
wiley +1 more source
Ecotoxicology and Environmental SafetyPyrrolizidine alkaloids (PAs) are a group of naturally occurring alkaloids widely present in plants. PAs are highly hepatotoxic and have been documented to cause many incidents of human and animal poisoning.
Yanli Zhu +6 more
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Bio-Protocol, 2018 This protocol delivers a method to determine the biosynthetic capability of comfrey leaves for pyrrolizidine alkaloids independently from other organs like roots or flowers.The protocol applies and combines radioactive tracer experiments with standard ...
Thomas Stegemann +2 more
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