Results 21 to 30 of about 7,024 (237)

Gut-specific cardenolide-resistant sodium pump primed an omnivore to feed on toxic oleander

open access: yesiScience, 2022
Summary: Apocynaceae plants produce toxic cardenolides to defend against their herbivores. Cardenolides could inhibit the α subunit of Na+⁄K+-ATPase (ATPα), which plays critical roles in biological processes such as muscle contraction, neural function ...
Tianyu Wang, Lina Shi, Ying Zhen
doaj   +1 more source

Cardenolides, toxicity, and the costs of sequestration in the coevolutionary interaction between monarchs and milkweeds

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2021
Significance Interactions between plants and herbivores constitute a major pathway of energy transfer up the food chain. As a consequence, evolution by natural selection has honed the chemically mediated antagonistic interactions between these groups ...
A. Agrawal   +6 more
semanticscholar   +1 more source

Defence mitigation by predators of chemically defended prey integrated over the predation sequence and across biological levels with a focus on cardiotonic steroids

open access: yesRoyal Society Open Science, 2022
Predator–prey interactions have long served as models for the investigation of adaptation and fitness in natural environments. Anti-predator defences such as mimicry and camouflage provide some of the best examples of evolution.
Shabnam Mohammadi   +3 more
doaj   +1 more source

High-resolution tandem mass spectrometry dataset reveals fragmentation patterns of cardiac glycosides in leaves of the foxglove plants

open access: yesData in Brief, 2020
Cardiac glycosides, steroid derivatives extracted from the foxglove plants, have been used for the treatment of heart failure since the 18th century. A method based on liquid chromatography coupled with high-resolution tandem mass spectrometry (LC/MS2 ...
Baradwaj Gopal Ravi   +3 more
doaj   +1 more source

Quo vadis Cardiac Glycoside Research?

open access: yesToxins, 2021
Cardiac glycosides (CGs), toxins well-known for numerous human and cattle poisoning, are natural compounds, the biosynthesis of which occurs in various plants and animals as a self-protective mechanism to prevent grazing and predation.
Jiří Bejček   +3 more
doaj   +1 more source

Molecular Modes of Action of an Aqueous Nerium oleander Extract in Cancer Cells In Vitro and In Vivo

open access: yesMolecules, 2023
Cancer drug resistance remains a major obstacle in clinical oncology. As most anticancer drugs are of natural origin, we investigated the anticancer potential of a standardized cold-water leaf extract from Nerium oleander L., termed Breastin.
Luay J. Rashan   +9 more
doaj   +1 more source

Unraveling the roles of genotype and environment in the expression of plant defense phenotypes

open access: yesEcology and Evolution, 2021
Phenotypic variability results from interactions between genotype and environment and is a major driver of ecological and evolutionary interactions. Measuring the relative contributions of genetic variation, the environment, and their interaction to ...
Abigail S. Potts, Mark D. Hunter
doaj   +1 more source

Pharmacokinetics, Safety, and Efficacy of Intravitreal Digoxin in Preclinical Models for Retinoblastoma [PDF]

open access: yes, 2015
PURPOSE:To assess in vitro cytotoxic activity and antiangiogenic effect, ocular and systemic disposition, and toxicity of digoxin in rabbits after intravitreal injection as a potential candidate for retinoblastoma treatment.METHODS:A panel of two ...
Abramson, David   +13 more
core   +2 more sources

Characterization and Chromatographic Fingerprint Analysis of Traditional Wallflower Oil [PDF]

open access: yesResearch Journal of Pharmacognosy, 2021
Background and objective: Wallflower oil is made from the flowers of Erysimum cheiri (L.) Crantz which is a herb rich in cardenolide compounds. Wallflower oil was traditionally indicated for analgesic, anti-inflammatory, hair tonic, and wound healing ...
Ghazaleh Mosleh   +2 more
doaj   +1 more source

Consequences of toxic secondary compounds in nectar for mutualist bees and antagonist butterflies [PDF]

open access: yes, 2016
Attraction of mutualists and defense against antagonists are critical challenges for most organisms and can be especially acute for plants with pollinating and non?pollinating flower visitors.
Agrawal, Anurag A., Jones, Patricia L.
core   +2 more sources

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