Results 41 to 50 of about 4,204 (164)

Recent changes in drug abuse scenarios : The new/novel psychoactive substances (NPS) phenomenon [PDF]

open access: yes, 2018
© 2018 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).Peer ...
Schifano, Fabrizio
core   +2 more sources

Compost Tea as a Natural Bioactive Solution: Unlocking the Antimicrobial and Antiviral Potential of Bell Pepper and Citrus Wastes

open access: yesEnvironmental Microbiology Reports, Volume 18, Issue 1, February 2026.
Compost teas derived from bell pepper and citrus waste are rich in bioactive phenolics and lignin derivatives, showing strong antibacterial activity against gram‐positive bacteria and potent antiviral effects against HSV‐1 and RSV. These findings highlight their potential as sustainable, circular bioresources for biomedical applications.
Maria Vittoria Verrillo   +7 more
wiley   +1 more source

Antipyretic effect of crude methanolic extract of Mytragyna speciosa in mice. [PDF]

open access: yes, 2011
Mitragyna speciosa is a species of tropical indigenous plant that can be found mainly in Southeast Asia. This study aims to ascertain the existence of antipyretic properties of the crude methanolic extract of Mitragynaspeciosa, and determine its ...
Abdul Kadir, Arifah   +2 more
core  

A cell‐type‐specific regulon controlling monoterpene indole alkaloid biosynthesis with feedback and feedforward activation loops

open access: yesNew Phytologist, Volume 249, Issue 2, Page 945-960, January 2026.
Summary Monoterpene indole alkaloids (MIA) are a diverse class of plant natural products produced by a subset of lineages within the Asterid clade of eudicots. The diversity of MIAs provides a unique opportunity to study not only the evolution of biosynthetic genes but also their regulation.
Chenxin Li   +7 more
wiley   +1 more source

Environmental and physiological determinants of growth and phytochemical variation in Kratom (Mitragyna speciosa): A review [PDF]

open access: yesJournal of Horticulture and Postharvest Research
Purpose: Kratom (Mitragyna speciosa) is a tropical plant native to Southeast Asia, widely used for traditional and emerging therapeutic purposes. This review investigates the environmental and physiological determinants of phytochemical variation in ...
Bujaningrum Agustina   +2 more
doaj   +1 more source

Drogas legales emergentes: marihuana sintética, kratom, salvia divinorum, metoxetamina y los derivados de la piperazina [PDF]

open access: yes, 2015
A pesar de su amplia oferta y disponibilidad a través de internet, muchas de las drogas de abuso emergentes siguen siendo desconocidas para un gran número de médicos y profesionales sanitarios.
Aliño, Marta   +4 more
core  

Discovery of a cytochrome P450 enzyme catalyzing the formation of spirooxindole alkaloid scaffold

open access: yesFrontiers in Plant Science, 2023
Spirooxindole alkaloids feature a unique scaffold of an oxindole ring sharing an atom with a heterocyclic moiety. These compounds display an extensive range of biological activities such as anticancer, antibiotics, and anti-hypertension.
Tuan-Anh M. Nguyen   +5 more
doaj   +1 more source

Pollenanalytical studies in NE-Nigeria: preliminary results from the Manga Grasslands and Lake Tilla, Biu Plateau [PDF]

open access: yes, 1996
Two sites situated in the Sahelian and Sudanian zones of NE-Nigeria were chosen for pollen analysis. A sediment core from an interdunal depression in the eastern Manga Grassland provides information on the Holocene vegetation history of the Sahel between
Salzmann, Ulrich
core  

From data to discovery: leveraging big data in plant natural products biosynthesis research

open access: yesThe Plant Journal, Volume 122, Issue 6, June 2025.
SUMMARY Plant natural products or specialized metabolites play a vital role in drug discovery and development, with many clinically important derivatives such as the anticancer drugs topotecan (derived from the natural alkaloid camptothecin) and etoposide (derived from the natural polyphenol podophyllotoxin).
Matthew McConnachie   +4 more
wiley   +1 more source

Assessment of the possible health risks associated with the consumption of botanical preparations of Mitragyna speciosa (kratom)

open access: yesEFSA Journal, 2022
The current report summarises the work performed in the context of the European Food Risk Assessment Fellowship Programme (EU‐FORA), which included the evaluation of health risks associated with the consumption of botanical preparations of Mitragyna ...
Georgia Papadi   +2 more
doaj   +1 more source

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