Lexic.us

Definition of Theophylline

1. Noun. A colorless crystalline alkaloid derived from tea leaves or made synthetically; used in medicine as a bronchial dilator.

Definition of Theophylline

1. Noun. (pharmaceutical drug) Methylxanthine drug used in therapy for respiratory diseases such as COPD or asthma. ¹

¹ Source: wiktionary.com

Definition of Theophylline

1. [n -S]

Medical Definition of Theophylline

1. Inhibits cAMP phosphodiesterase and is often used in conjunction with exogenous dibutyryl cyclic AMP to raise cellular cAMP levels. Other, less potent, methylxanthines are caffeine, theobromine and aminophylline. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Theophylline

Literary usage of Theophylline

Below you will find example usage of this term as found in modern and/or classical literature:

1. A Textbook of Organic Chemistry by Joseph Scudder Chamberlain (1921)
"Caffeine, Theobromine, theophylline The alkaloid caffeine is found in ... It may be prepared from either theobromine or from theophylline by further ..."

2. The Pharmacopoeia of the United States of America: (The United States by United States Pharmacopoeial Convention (1820)
"One Gm. of theophylline dissolves in 100 rails of water and 80 mils of alcohol ... theophylline occurs as a white, crystalline powder; odorless and having a ..."

3. Recent Advances in Organic Chemistry by Alfred Walter Stewart (1920)
"... tetra-basic acid; on this account the following formula has been tentatively ascribed to it:— NH—CO—NH CO CO NH-CO-NH 2. The Synthesis of theophylline. ..."

4. A Lifelong Passion: Nicholas and Alexandra: Their Own Story by Andrei Maylunas (2005)
"Patients with acute exacerbation of chronic obstructive pulmonary disease (COPD) frequently report a history of theophylline use prior to arrival in the ..."

5. Chemical Abstracts by American Chemical Society (1908)
"The theophylline was also tested by converting it into caffeine by the action of alcoholic KOH and Mel. (A) Ethyl theophylline (I). ..."

6. Allen's Commercial Organic Analysis: A Treatise on the Properties, Modes of by Alfred Henry Allen (1912)
"For the isolation of theophylline Kossel extracts tea-leaves with alcohol and evaporates the tincture to a syrup, when most of the caffeine crystallises out ..."

7. Commercial Organic Analysis by Alfred Henry Allen, Wm. A. Davis (1912)
"For the isolation of theophylline Kossel extracts tea-leaves with alcohol and evaporates the tincture to a syrup, when most of the caffeine crystallises out ..."

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