alkaloids

A group of bitter tasting plant poisons, many of which are of medical importance. The alkaloids, which include nicotine, strychnine, morphine, codeine, atropine, caffeine and quinine, have powerful actions on the body. Alkaloids are small, complex, nitrogen-containing molecules often produced by plants as an evolutionary survival characteristic in an environment containing herbivorous animals.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

alkaloids

basic organic compounds containing nitrogen that are found in some families of plants (e.g. Papaveraceae). Alkaloids have poisonous and medicinal properties. Examples include nicotine, quinine, morphine and cocaine.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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References in periodicals archive

and their associated pyrrolizidine alkaloids is motivated by worldwide distribution and their continued expansion into new geographical ranges, causing serious problems for livestock production and potential risk of human poisoning.

A survey of Senecio spp. affecting livestock in Uruguay and their associated pyrrolizidine alkaloid content/Senecio spp. Afetando a pecuaria no Uruguai e sua associacao com alcaloides pirrolizidinicos

The importance and use of plant species belonging to the genus Papaver has a very long history dating back some 3,000 years, when it was already administered in the form of opium (containing a complex of alkaloids) as a pain-relieving remedy.

The Elevation of LC-ESI-Q-TOF-MS Response in the Analysis of Isoquinoline Alkaloids from Some Papaveraceae and Berberidaceae Representatives

The structures of alkaloids from the roots of Stemona species are shown in Figure 1.

Inhibitory Activity and Docking Analysis of Antimalarial Agents from Stemona sp. toward Ferredoxin-NADP+ Reductase from Malaria Parasites

Asima Chatterjee's work in the field of science opened the doors for millions of women to excel in the field and her research on vinca alkaloids which is now widely used in chemotherapy and helps to slow down the growth rate of cancer cells.

Google honours Indian chemist Asima Chatterjee on 100th birthday

The consistent profiles of alkaloids obtained by capillary milking and gland dissection compared with those obtained by soaking ants without venom apparatuses suggest that venom could be distributed over the entire body of the ant, potentially for defense.

Whole body solvent soak gives representative venom alkaloid profile from Solenopsis invicta (Hymenoptera: Formicidae) workers

Potential Alkaloids Bitter (Andrographis paniculata L) of the total leukocyte and leukocyte count type on setelsh Mice infected with Salmonella typhimurium..Vet Met.

Alkaloid immunomodulatory effects of sambiloto (andrographis paniculate l.) on the response of gamma interferon and t helper cell ([cd4.sup.+])

Implications: The Committee on Herbal Medicinal Products of the European Medicines Agency recommended in 2014 that pyrrolizidine alkaloid intake from herbal medicinal products be limited to 0.35 microgram/day, and several European countries are now transitioning towards the adoption of this limit.

Pyrrolizidine alkaloids in herbal medicines--re-emergence of an old threat?

Thus, the objective of this study was to explore the potential of GC and LC coupled to QTOF mass analyzer for the profiling of isoquinoline alkaloids in F.

Alkaloids Profiling of Fumaria capreolata by Analytical Platforms Based on the Hyphenation of Gas Chromatography and Liquid Chromatography with Quadrupole-Time-of-Flight Mass Spectrometry

It amends maximum levels (MLs) for tropane alkaloids (TA) in certain cereal-based foods for infants and young children.

EU Amends Maximum Levels for Tropane Alkaloids in Certain Cereal-Based Foods

(2012) Antitussive, expectorant and anti-inflammatory activities of four alkaloids isolated from Bulbus of Fritillaria wabuensis.

Therapeutic potential of alkaloids in cough treatment