methylxanthine


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Related to methylxanthine: caffeine, aminophylline, Xanthines

methylxanthine

(ˌmiːθaɪlˈzænˌθiːn)
n
(Chemistry) a compound formed through the methylation of xanthine, such as caffeine or theophylline
References in periodicals archive ?
It's because chocolate contains methylxanthines and theobromine which could mess up a canine's insides by causing vomiting, diarrhoea and excessive urination, panting and thirst, an abnormal heartbeat, seizures or even death.
Presently, it can be fairly described that caffeine is the approved methylxanthine in order to treat AOP in most of the neonatal care facilities.
Methylxanthines are phosphodiesterase (PDE) inhibitors, leading to an increase in pituitary cyclic adenosine monophosphate (cAMP) which is involved in GH release22.
Are methylxanthine effects due to antagonism of endogenous adenosine?
sinensis): variation in phenolic, methylxanthine, and antioxidant profiles.
For this reason, caffeine, a methylxanthine derivate, has been proposed as a therapeutic option for PLPH.
Chocolate is poisonous because it contains the methylxanthine theobromine, which is similar to caffeine and is used medicinally as a diuretic, heart stimulant, blood vessel dilator and a muscle relaxant.
The compound methylxanthine in chocolate can be toxic to pets, especially when concentrated in darker chocolates.
It can efficiently catalyzes the conversion of 1- methylxanthine (a metabolite of caffeine) to 1- methyluric acid, but has low activity on 3- methylxanthine.
Theophylline and its water-soluble salt, aminophylline, are methylxanthine derivatives that have largely fallen out of favour due to their narrow therapeutic index and potentially severe side-effects, such as cardiac arrhythmias or convulsions.
The interceptor/protector approach was developed in [6, 49, 53, 62, 65, 67, 69, 76] and resulted in the separation of the contribution of the interceptor and protector mechanisms into the net effect of drug removal from DNA on the addition of methylxanthine. Moreover, these studies have demonstrated the possibility of quantitative estimation of the in vitro change of biological effect in drug-methylxanthine systems [6, 67, 76].
Horrid heartburn Chocolate contains methylxanthine, which in some people results in a pleasant buzz sensation, but can, in some cases, make hearts beat faster and also cause acid heartburn by relaxing the muscle between the oesophagus and the stomach allowing acid to return causing pain.