نتایج جستجو برای: methylxanthines

تعداد نتایج: 350  

Journal: :Applied and environmental microbiology 1983
R L Buchanan D G Hoover S B Jones

Evaluation of caffeine and a number of related methylxanthines indicated that the ability of the compound to inhibit growth and aflatoxin production by Aspergillus parasiticus is highly specific and does not involve an inhibition of cyclic AMP phosphodiesterase. Supplementation of the culture medium with purine bases, nucleosides, and nucleotides suggested that the inhibition of fungal growth c...

Journal: :Chemistry & biology 2005
Francesco V Rao Ole A Andersen Kalpit A Vora Julie A Demartino Daan M F van Aalten

Family 18 chitinases play key roles in a range of pathogenic organisms and are overexpressed in the asthmatic lung. By screening a library of marketed drug molecules, we have identified methylxanthine derivatives as possible inhibitor leads. These derivatives, theophylline, caffeine, and pentoxifylline, are used therapeutically as antiinflammatory agents, with pleiotropic mechanisms of action. ...

Journal: :ACS synthetic biology 2013
Erik M Quandt Michael J Hammerling Ryan M Summers Peter B Otoupal Ben Slater Razan N Alnahhas Aurko Dasgupta James L Bachman Mani V Subramanian Jeffrey E Barrick

The widespread use of caffeine (1,3,7-trimethylxanthine) and other methylxanthines in beverages and pharmaceuticals has led to significant environmental pollution. We have developed a portable caffeine degradation operon by refactoring the alkylxanthine degradation (Alx) gene cluster from Pseudomonas putida CBB5 to function in Escherichia coli. In the process, we discovered that adding a glutat...

Journal: :Indian journal of physiology and pharmacology 1997
Y K Gupta J Malhotra

Theophylline is well known for its convulsant and proconvulsant action. Some experimental studies also suggest that theophylline and other methylxanthines may impair the protection of antiepileptic drugs. The interaction of theophylline and the antiepileptic drugs diazepam and sodium valproate was studied in pentylenetetrazole (PTZ) - kindled seizures in rats. Pretreatment with both diazepam 4 ...

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