Search results
Results from the WOW.Com Content Network
Theophylline extended-release tablets in Japan. Theophylline, also known as 1,3-dimethylxanthine, is a drug that inhibits phosphodiesterase and blocks adenosine receptors. [1] It is used to treat chronic obstructive pulmonary disease (COPD) and asthma. [2] Its pharmacology is similar to other methylxanthine drugs (e.g., theobromine and caffeine ...
1576 n/a Ensembl ENSG00000160868 n/a UniProt P08684 n/a RefSeq (mRNA) NM_001202855 NM_001202856 NM_001202857 NM_017460 n/a RefSeq (protein) NP_001189784 NP_059488 n/a Location (UCSC) Chr 7: 99.76 – 99.78 Mb n/a PubMed search n/a Wikidata View/Edit Human Cytochrome P450 3A4 (abbreviated CYP3A4) (EC 1.14.13.97) is an important enzyme in the body, mainly found in the liver and in the intestine ...
By definition, when a medication is administered intravenously, its bioavailability is 100%. [ 2 ] [ 3 ] However, when a medication is administered via routes other than intravenous, its bioavailability is lower due to intestinal epithelium absorption and first-pass metabolism .
Cytochrome P450 2E1 (abbreviated CYP2E1, EC 1.14.13.n7) is a member of the cytochrome P450 mixed-function oxidase system, which is involved in the metabolism of xenobiotics in the body. This class of enzymes is divided up into a number of subcategories, including CYP1, CYP2, and CYP3, which as a group are largely responsible for the breakdown ...
Diphenhydramine is the primary constituent of dimenhydrinate and dictates the primary effect. The main differences relative to pure diphenhydramine are a lower potency due to being combined with 8-chlorotheophylline (by weight, dimenhydrinate is between 53% and 55.5% diphenhydramine) [10] and the fact that the stimulant properties of 8-chlorotheophylline help reduce the side ...
Theophylline has also been marketed in combination with other ephedrine-like sympathomimetics like racephedrine and pseudoephedrine and with other barbiturates such as amobarbital and butabarbital, among other drugs. [15] A combination of theophylline, ephedrine, and hydroxyzine has been marketed under the brand name Marax among others as well.
From a pharmacokinetic point of view, doxofylline importantly differs from theophylline also because it lacks the ability to interfere with the cytochrome enzymes CYP1A2, CYP2E1 and CYP3A4, thus preventing significant interaction with other drugs metabolized via these pathways in the liver.
The metabolome reflects the interaction between an organism's genome and its environment. As a result, an organism's metabolome can serve as an excellent probe of its phenotype (i.e. the product of its genotype and its environment).