Results 41 to 50 of about 1,249 (192)

Challenges in reported COVID-19 data: best practices and recommendations for future epidemics

BMJ Global Health, 2021
The proliferation of composite data sources tracking the COVID-19 pandemic emphasises the need for such databases during large-scale infectious disease events as well as the potential pitfalls due to the challenges of combining disparate data sources ...
Ben Oppenheim, Rinette Badker, Kierste Miller, Chris Pardee, Nicole Stephenson, Benjamin Ash, Tanya Philippsen, Christopher Ngoon, Partrick Savage, Cathine Lam, Nita Madhav   +10 more
doaj   +1 more source

Biocatalysis as Useful Tool in Asymmetric Synthesis: An Assessment of Recently Granted Patents (2014–2019) [PDF]

, 2019
The broad interdisciplinary nature of biocatalysis fosters innovation, as different technical fields are interconnected and synergized. A way to depict that innovation is by conducting a survey on patent activities.
Alcántara, Andrés R., Domínguez de María, Pablo, Gonzalo Calvo, Gonzalo de   +2 more
core   +3 more sources

Regulating khat - Dilemmas and opportunities for the international drug control system [PDF]

, 2009
Background: The regulation of khat, one of the most recent psychoactive drugs to become a globally traded commodity, remains hotly contested within different producer and consumer countries.
Beckerleg, Susan, Hailu, D. (Degol), Klein, A. (Axel)   +2 more
core   +1 more source

Expressed sequence tag analysis of khat (Catha edulis) provides a putative molecular biochemical basis for the biosynthesis of phenylpropylamino alkaloids

Genetics and Molecular Biology, 2011
Khat (Catha edulis Forsk.) is a flowering perennial shrub cultivated for its neurostimulant properties resulting mainly from the occurrence of (S)-cathinone in young leaves.
Jillian M. Hagel, Raz Krizevski, Korey Kilpatrick, Yaron Sitrit, Frédéric Marsolais, Efraim Lewinsohn, Peter J. Facchini   +6 more
doaj   +1 more source

Evaluation of the cytotoxic and genotoxic potential of Khat (Catha edulis Forsk) extracts on human T lymphoblastoid cell line [PDF]

, 2004
This paper reports on an investigation of the cytotoxic and genotoxic potential of khat extract using a human T lymphoblastoid cell line (CEM). Exponentially growing CEM cells were cultured for 12 h in the presence of khat extract (0-2000 μg ml-1 ...
Al-Meshal, Al-Meshal, Barnett, C.N. Fokunang ., C.R. Barnett ., Fenech, Gunaid, Hammouda, Kabarity, Kalix, Kamel, Morton, O’Gara, O’Gara, P.T. Tomkins ., Reed, S.S. Barkwan, Sakagam, Sharma, Y.A. Barnett ., Zheng   +20 more
core   +1 more source

Effect of Khat (Catha edulis) Use on the Bioavailability, Plasma Levels and Antimalarial Activity of Chloroquine. [PDF]

, 2016
OBJECTIVES This study aimed to evaluate the effect of khat (Catha edulis) on chloroquine (CQ) bioavailability in healthy Yemeni adults and its effect on CQ plasma levels and parasite clearance among malaria patients.
Al-Habori, Molhem, Chance, Michael, Issa, Faiza H   +2 more
core   +4 more sources

Evaluation of the effect of various drying techniques on the composition of the psychoactive phenylpropylamino alkaloids of khat (Catha edulis Forsk) chewing leaves

Bulletin of the Chemical Society of Ethiopia, 2013
The study demonstrated that by freezing or drying under different conditions, cathinone could be detected in the khat (Catha edulis Forsk) samples that have been harvested for more than four months.
S. Chigome, N. Torto, M. Redi-Abshiro, B.S. Chandravanshi, M. Atlabachew, B.O. Pule   +5 more
doaj   +1 more source

An index of fatal toxicity for new psychoactive substances [PDF]

, 2018
The final, definitive version of this paper has been published in Journal of Psychopharmacology, February 2018, published by SAGE Publishing, All rights reserved.An index of fatal toxicity for new psychoactive substances has been developed based solely ...
Corkery, John, King, L.A.
core   +2 more sources

Therapeutic and toxic blood concentrations of nearly 1,000 drugs and other xenobiotics [PDF]

, 2012
Introduction: In order to assess the significance of drug levels measured in intensive care medicine, clinical and forensic toxicology, as well as for therapeutic drug monitoring, it is essential that a comprehensive collection of data is readily ...
Andresen, Hilke, Iwersen-Bergmann, Stefanie, Schmoldt, Achim, Schulz, Martin   +3 more
core   +1 more source

Preparative HPLC for large scale isolation, and salting-out assisted liquid–liquid extraction based method for HPLC–DAD determination of khat (Catha edulis Forsk) alkaloids

Chemistry Central Journal, 2017
Background Khat (Catha edulis Forsk) is an evergreen shrub of the Celastraceae family. It is widely cultivated in Yemen and East Africa, where its fresh leaves are habitually chewed for their momentary pleasures and stimulation as amphetamine-like ...
Minaleshewa Atlabachew, Bhagwan Singh Chandravanshi, Mesfin Redi-Abshiro   +2 more
doaj   +1 more source