Example sentences for: alkaloids

How can you use “alkaloids” in a sentence? Here are some example sentences to help you improve your vocabulary:

  • It's only recently has been where everybody became aware of a lot of the active alkaloids in it.

  • utilis) that produce a dose-related increase in the clotting time of blood induced by carpet viper venom ( Echis carinatus ) would be useful against bites from Bothrops species that cause haemorrhage at the point of injection due to the inhibition of the clotting mechanism [ 40 ] . Antivenom compounds so far isolated from plants include protocatechuic acid, a catechin-gallo-catechin tannin, caffeic acid derivatives (chlorogenic acid, cynarin), coumarins (bergapten), flavonoids (rutin, isoscutellarein, kaempferol, quercetin, hesperidin), ar-turmerone, alkaloids (aristolochic acid), triterpenoids, triterpenes, coumestans (wedelolactone), sterols (sitosterol, stigmasterol, beta-amyrin), triterpenoid glycosides, alkaloids (allantoin) and lignoflavonoids [ 43 40 44 42 ] . Many relevant compounds are widely distributed nitrogen-free, low molecular weight compounds (except aristolochic acid, an untypical non-basic, nitro-derivative) [ 38 ] . The structural similarities of certain plant chemicals found in plants used for snakebites are an isoflavone skeleton, acidic nature and dioxygenated functionality [ 44 ] .

  • Aframomum melegueta has been previously recorded as a stimulant [ 50 ] . Caribs of Dominica used Aframomum granum-paradisi leaves on their bodies while they were bathing and the plant was also given to their hunting dogs [ 16 ] . Seeds were put into rum as a 'chauffe' to excite dogs [ 16 ] . Aframomum granum-paradisi contains alkaloids (piperine), essential oils and resins [ 54 ] .

  • Scorpion venom when injected exerts a strong inflammatory response [ 11 ] . Many plant species used against stings contain compounds with antiinflammatory properties, flavonoids (rutin, hesperidin, quercetin), coumarins (bergapten), coumestans (wedelolactone), triterpenes, sterols and saponins [ 38 11 ] . The mechanism of action of the flavonoids is based on the inhibition of enzymatic steps in the arachidonic acid cascade [ 38 ] . Plant compounds that are immunostimulants at very low doses are some alkaloids, quinones, isobutylamides, phenolcarboxylic acid esters and terpenoids [ 39 ] . Other plant compounds with immunostimulatory effects are sesquiterpene lactones [ 40 ] . Many polysaccharides and glycoproteins enhance the unspecific immune system by activating the phagocytotic activity of granulocytes and macrophages, or by inducing cytokine production or influencing complement factors [ 39 ] .

  • Because of the high catalytic efficiency and broad substrate specificity, β-lactamases have been extensively used in the ADEPT approach to activate prodrugs of vinca alkaloids [ 27 ] , nitrogen mustard [ 28 29 30 31 32 ] , doxorubicin [ 33 34 35 36 ] and others [ 37 ] . To take advantage of the potent antitumor activity of the CC-1065 class of compounds and the ADEPT approach, we have synthesized β-lactam prodrugs.


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