alkaloids


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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.

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.

alkaloids,

n alkaline phytochemicals that contain nitrogen in a heterocyclic ring structure. They can have powerful pharmacological effects and are more often used in traditional medicine than in herbal treatments.
References in periodicals archive ?
Results: The sleep analysis revealed that alkaloid extract from MS did not change any REM parameters which included average duration of each REM episode, total REM time, number of REM episode and REM latency whereas fluoxetine significantly suppressed all REM parameters and delayed REM latency.
The commercial success of the taxanes and vinca alkaloids in the 1970s validated the cancer cell's cytoskeleton as a target for anti-cancer drugs, making the destruction of the microfilaments an obvious alternative drug target.
Alkaloids analysis in root and leaf fractions of sarpagandha (Rauwolfia serpentina).
Traditionally, the frogs' coloration and alkaloids were thought to be used as protection against mammals and birds, not as defenses against arthropods like ants, he says.
Alkaloids were extracted according the following step (Kamadaetal, 1986):
Determination of estrogenic/anti-estrogenic activities: The in vivo estrogenic/anti-estrogenic response of the rats to the alkaloids was evaluated by adopting the procedure described by Kanno et al.
This study uses the alkaloid fraction of jarong (Achyrantesaspera Linn) leaves and mice with mammary cancer were induced using benzo([alpha])pyrene.
Pharmacological inhibition of DYRK1A through the use of beta-carboline alkaloids may provide an opportunity to intervene therapeutically to alter the onset or progression of tau pathology in Alzheimer's disease," Dr.
DC preparations with different oxindole alkaloid composition.
Unlike ergot alkaloids which are toxins produced by plants, endotoxins are derived from air-borne bacteria or bacteria found in food, water and waste substances, as well as through endogenous sources such as the gastrointestinal tract and colonized mucosa.
The prototype combines minor alkaloids of tobacco with other ingredients typical of botanical-based, dietary supplement products.
Naturally occurring alkaloids such as morphine and the anti-cancer drug vinblastine are already extracted from plants for medical applications.