Results 101 to 110 of about 3,231 (233)

Picrasidine I Regulates Apoptosis in Melanoma Cell Lines by Activating ERK and JNK Pathways and Suppressing AKT Signaling

open access: yesEnvironmental Toxicology, Volume 39, Issue 12, Page 5309-5320, December 2024.
ABSTRACT World Health Organization data indicate a continuous increase in melanoma incidence, with metastatic melanoma characterized by poor prognosis and drug resistance. The exploration of therapeutics derived from natural products remains an active area of in vitro research. The aim of this study was to determine the antitumor effects of picrasidine
Mu‐Kuei Shieu   +5 more
wiley   +1 more source

Coevolutionary escalation led to differentially adapted paralogs of an insect's Na,K‐ATPase optimizing resistance to host plant toxins

open access: yesMolecular Ecology, Volume 33, Issue 14, July 2024.
Abstract Cardiac glycosides are chemical defence toxins known to fatally inhibit the Na,K‐ATPase (NKA) throughout the animal kingdom. Several animals, however, have evolved target‐site insensitivity through substitutions in the otherwise highly conserved cardiac glycoside binding pocket of the NKA. The large milkweed bug, Oncopeltus fasciatus, shares a
Marlena Herbertz   +5 more
wiley   +1 more source

Resibufogenin suppresses colorectal cancer growth and metastasis through RIP3-mediated necroptosis

open access: yesJournal of Translational Medicine, 2018
Background Necroptotic susceptibility is probably an intrinsic weakness of cancer. Here, we report that resibufogenin, a member of bufadienolide family, suppresses the growth and metastasis of colorectal cancer (CRC) through induction of necroptosis in ...
Qinrui Han   +7 more
doaj   +1 more source

Nephroprotective effect of the cardiotonic steroid ouabain [PDF]

open access: yes, 2014
It has been shown that Na,K-ATPase (NKA) is a signal transducer. Our group described the anti-apoptotic effect of ouabain to the signaling function of NKA.
Burlaka, Ievgeniia
core   +1 more source

Natriuretic Hormones, Endogenous Ouabain, and Related Sodium Transport Inhibitors

open access: yesFrontiers in Endocrinology, 2014
The work of deWardener and colleagues stimulated longstanding interest in natriuretic hormones (NH). In addition to the atrial peptides (APs), the circulation contains unidentified physiologically-relevant NHs. One NH is controlled by the central nervous
John eHamlyn
doaj   +1 more source

Potent nonopioid antinociceptive activity of telocinobufagin in models of acute pain in mice

open access: yesPAIN Reports, 2019
. Introduction:. In recent decades, several researches have been conducted in search of new analgesics that do not present the side effects of opioids. In this context, animal venoms contain natural painkillers that have been used for the development of ...
Geissy I.M.C. Feitosa   +14 more
doaj   +1 more source

Insecticidal Bufadienolides from The Leaves of Kalanchoe daigremontiana (Crassulaceae) [PDF]

open access: yes, 2010
Kalanchoe is the biggest genera of Crassulaceae family and distributed in tropical and subtropical regions. This genera is found to be a rich source of biologically active natural products such as triterpenes, flavonoids and steroids.
Fajriah, Sofa   +4 more
core   +1 more source

A környezet hatása kétéltűek kémiai védekezésének változatosságára [PDF]

open access: yes, 2018
A fenotípusos plaszticitás, tehát a genotípus azon képessége, hogy különböző környezetekben különböző fenotípusokat hozzon létre, általánosan elterjedt az élővilágban.
Üveges, Bálint
core   +3 more sources

Chemical Evidence for Dietary Toxin Sequestration in the Asian Snake \u3ci\u3eRhabdophis tigrinus\u3c/i\u3e [PDF]

open access: yes, 2006
Rhabdophis tigrinus (Colubridae: Natricinae) is an oviparous, bufophagous (toad-eating) snake from eastern Asia that possesses defensive integumentary glands on the neck known as nuchal glands. These glands are used in antipredator displays and typically
Hutchinson, Deborah A.
core   +1 more source

Marinobufagenin Inhibits Neutrophil Migration and Proinflammatory Cytokines

open access: yesJournal of Immunology Research, 2019
Cardiotonic steroids, such as ouabain and digoxin, are known to bind to Na+/K+-ATPase and to promote several biological activities, including anti-inflammatory activity.
Deyse C. M. Carvalho   +7 more
doaj   +1 more source

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