Results 41 to 50 of about 435,947 (354)

CHEMICAL CONSTITUENTS AND EVALUATION OF ANTIPROLIFERATIVE AND ANTI-INFLAMMATORY ACTIVITIES FROM PSYCHOTRIA SCHLECHTENDALIANA (RUBIACEAE) [PDF]

Química Nova
Phytochemical study of Psychotria schlechtendaliana (Rubiaceae) aerial parts resulted in the isolation of alkaloids 4 N oxide harmane (1) and strictosidinic acid (2), and the terpenoids sitosterol, estigmasterol, α-amyrin, β-amyrin and betulinic acid ...
José G. de S. Corrêa, Vagner M. de Moura, Franciele Q. Ames, Mirelli Bianchin, Simone B. S. Sebold, Matheus A. Peixoto, Armando M. Pomini, João E. de Carvalho, Ana L. T. G. Ruiz, Ciomar A. Bersani-Amado, Silvana M. Oliveira Santin   +10 more
doaj   +1 more source

Chemical defenses of the Caribbean sponges Agelas wiedenmayeri and Agelas conifera [PDF]

, 2000
Previous studies have determined that Caribbean reef sponges of the genus Agelas are chemically defended from fish predation by brominated pyrrole alkaloids, and that the compounds responsible for this defense have been elucidated for one species, Agelas
Assmann, M., Köck, Matthias, Lichte, Ellen, Pawlik, J. R.   +3 more
core   +1 more source

Identifying Genes Involved in Alkaloid Biosynthesis in Vinca minor through Transcriptomics and Gene Co-Expression Analysis

Biomolecules, 2020
The lesser periwinkle Vinca minor accumulates numerous monoterpene indole alkaloids (MIAs) including the vasodilator vincamine. While the biosynthetic pathway of MIAs has been largely elucidated in other Apocynaceae such as Catharanthus roseus, the ...
Emily Amor Stander, Liuda Johana Sepúlveda, Thomas Dugé de Bernonville, Inês Carqueijeiro, Konstantinos Koudounas, Pamela Lemos Cruz, Sébastien Besseau, Arnaud Lanoue, Nicolas Papon, Nathalie Giglioli-Guivarc’h, Ron Dirks, Sarah Ellen O’Connor, Lucia Atehortùa, Audrey Oudin, Vincent Courdavault   +14 more
doaj   +1 more source

S-adenosyl-l-methionine: (S) -7,8,13, 14-tetrahydroberberine--n-methyltransferase, a branch point enzyme in the biosynthesis of benzophenanthridine and protopine alkaloids. [PDF]

, 1986
The enzyme which transfers the CH3-group of S-adenosylmethionine to the nitrogen atom of (S)-tetrahydroberberine and (S)-stylopine is found to occur in a number of plant cell cultures originating from species containing alkaloids; it is located at an ...
Amann, Battersby, M Rueffer, M.H Zenk, Rueffer, Rueffer, Slavik, Takao, Takao   +8 more
core   +1 more source

Potential of DNA Intercalating Alkaloids and Other Plant Secondary Metabolites against SARS-CoV-2 Causing COVID-19

Diversity, 2020
Many plants produce secondary metabolites (PSMs) with antiviral activities. Among the antiviral PSMs, lipophilic terpenoids in essential oils can disturb the lipid envelope of viruses.
M. Wink
semanticscholar   +1 more source

Herbal highs: review on psychoactive effects and neuropharmacology [PDF]

, 2017
Background: A new trend among users of new psychoactive substances’ the consumption of “herbal highs”: plant parts containing psychoactive substances.
Graziano, S, Orsolini, L, Pichini, S., Rotolo, Mc, Schifano, F, Tittarelli, R   +5 more
core   +1 more source

The Biological Activity of Natural Alkaloids against Herbivores, Cancerous Cells and Pathogens

Toxins, 2019
The growing incidence of microorganisms that resist antimicrobials is a constant concern for the scientific community, while the development of new antimicrobials from new chemical entities has become more and more expensive, time-consuming, and ...
A. Thawabteh, S. Juma, M. Báder, Donia Karaman, L. Scrano, S. Bufo, R. Karaman   +6 more
semanticscholar   +1 more source

Evaluating the therapeutic role of selected active compounds in Plumula Nelumbinis on pulmonary hypertension via network pharmacology and experimental analysis

Frontiers in Pharmacology, 2022
Excessive proliferation and migration of pulmonary artery smooth muscle cells (PASMCs) are critical factors leading to vascular remodeling in pulmonary hypertension (PH).
Xinghua Xiao, Xinghua Xiao, Xinghua Xiao, Fangmei Luo, Minyi Fu, Minyi Fu, Minyi Fu, Yueping Jiang, Yueping Jiang, Yueping Jiang, Shao Liu, Shao Liu, Shao Liu, Bin Liu, Bin Liu, Bin Liu   +15 more
doaj   +1 more source

Preliminary Phytochemical Screening, Quantitative Analysis of Alkaloids, and Antioxidant Activity of Crude Plant Extracts from Ephedra intermedia Indigenous to Balochistan

TheScientificWorldJournal, 2017
The aim of this study was to evaluate the antioxidant activity, screening the phytogenic chemical compounds, and to assess the alkaloids present in the E. intermedia to prove its uses in Pakistani folk medicines for the treatment of asthma and bronchitis.
R. Gul, S. U. Jan, S. Faridullah, Samiullah Sherani, N. Jahan   +4 more
semanticscholar   +1 more source

The Promotion of Festuca sinensis under Heavy Metal Treatment Mediated by Epichloë Endophyte

Agronomy, 2021
To more clearly clarify the relationship between the Epichloë endophyte and its host, F. sinensis, the effects of Epichloë endophyte on F. sinensis performance under heavy metal treatment was investigated. The growth performance and physiology variations
Meining Wang, Pei Tian, Min Gao, Miaomiao Li   +3 more
doaj   +1 more source