Results 31 to 40 of about 15,560 (192)

The plant-derived triterpenoid, cucurbitacin B, but not cucurbitacin E, inhibits the developmental transition associated with ecdysone biosynthesis in Drosophila melanogaster

open access: yesJournal of Insect Physiology, 2021
In insects, some sterols are essential not only for cell membrane homeostasis, but for biosynthesis of the steroid hormone ecdysone. Dietary sterols are required for insect development because insects cannot synthesize sterols de novo. Therefore, sterol-like compounds that can compete with essential sterols are good candidates for insect growth ...
Toyofuku, Miwako   +8 more
openaire   +4 more sources

In silico detection of Cucurbitacin-E on antioxidant enzymes of model organism Galleria mellonella L. (Lepidoptera: Pyralidae) and variation of antioxidant enzyme activities and lipid peroxidation in treated larvae

open access: yesBeni-Suef University Journal of Basic and Applied Sciences, 2022
Background In silico studies further provided predictive binding properties of selected ligands for inhibition of target protein. In the study, molecular binding poses of Cucurbitacin-E and antioxidant enzymes (glutathione-S-transferase (GST), superoxide
Fahriye Sümer Ercan   +2 more
doaj   +1 more source

Cucurbitacins B, E and I Concentrations and Relationship with Drought Tolerance in Bottle Gourd [Lagenaria siceraria (Molina) Standl.]

open access: yesPlants, 2023
Bottle gourd [Lagenaria siceraria (Molina) Standl.]) is a relatively drought-tolerant cucurbit due to the high composition of unique biochemical compositions, including cucurbitacin.
Phumzile Mkhize   +2 more
doaj   +1 more source

The Effects of Cucurbitacin E on Two Lymphocyte Models [PDF]

open access: yesPharmaceutical Biology, 2004
Cucurbitacin E (CuE), like other cucurbitacins, is a potential anti-neoplastic agent. The aim of the present study was to investigate the in vitro effects of CuE on phytohaemagglutinin (PHA)-activated and unstimulated lymphocytes. CuE did not produce any significant cytotoxic effects on the two models.
E. Attard   +3 more
openaire   +1 more source

Metabolic engineering of cucurbitacins in Cucurbita pepo hairy roots

open access: yesFrontiers in Plant Science, 2022
In this paper we show that metabolic engineering in Cucurbita pepo hairy roots can be used to both effectively increase and modify cucurbitacins. Cucurbitacins are highly-oxygenated triterpenoids originally described in the Cucurbitaceae family, but have
Aldo Almeida   +7 more
doaj   +1 more source

Bioassay-guided isolation of cytotoxic constituents from the flowers of Aquilaria sinensis

open access: yesNatural Products and Bioprospecting, 2022
Bioassay-guided fractionation of the EtOH extract from the flowers of Aquilaria sinensis (Lour.) Spreng. (Thymelaeaceae) led to the isolation of a new cucurbitane-type triterpenoid, aquilarolide A (1), along with five known compounds (2–6). The structure
Jun Yang   +5 more
doaj   +1 more source

Cucurbitacin E Targets Proliferating Endothelia

open access: yesJournal of Surgical Research, 1997
Tumor vasculature offers a target for drugs directed against proliferating endothelia. We hypothesized that cucurbitacin E (CuE), an actin-disrupting agent, would preferentially inhibit proliferating vs. quiescent endothelia. Log-phase and confluent ECV304 and HUVEC human endothelial cells were exposed to 10-200 nM CuE for 1-96 hr, and toxicity was ...
M D, Duncan, K L, Duncan
openaire   +2 more sources

Cucurbitacin E induces apoptosis of human prostate cancer cells via cofilin-1 and mTORC1. [PDF]

open access: yesOncol Lett, 2017
Cucurbitacin E is an important member of the cucurbitacin family and exhibits inhibitory effects in various types of cancer. Cucurbitacin is a potential antineoplastic drug; however, its anticancer effect in human prostate cancer (PC) remains unknown.
He X, Gao Q, Qiang Y, Guo W, Ma Y.
europepmc   +4 more sources

Herbivory reduces plant interactions with above- and belowground antagonists and mutualists. [PDF]

open access: yes, 2012
Herbivores affect plants through direct effects, such as tissue damage, and through indirect effects that alter species interactions. Interactions may be positive or negative, so indirect effects have the potential to enhance or lessen the net impacts of
Adler, L.S.   +4 more
core   +1 more source

Grayanotoxin I Intoxication in Pet Pigs [PDF]

open access: yes, 2018
Contaminated honey is a common cause of grayanotoxin intoxication in humans. Intoxication of animals, especially cattle, is usually due to ingestion of plants of the Ericaceae family, such as Rhododendron. Here, we report the ingestion of Pieris japonica
Köster, Nils   +5 more
core   +1 more source

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