Biomaterial Database

Bronchodilator effect of theophylline preparations and aerosol fenoterol in stable asthma. 1986

H Magnussen, and R Jörres, and V Hartmann

To compare the acute bronchodilator effect of increasing doses of intravenous theophylline and inhaled beta adrenergic agonists, we administered intravenous theophylline dissolved in ethylenediamine or proxyphylline and diprophylline or placebo in a double blind fashion to nine asthmatics on three different days. At each session, 100 mg theophylline or placebo were given during each of five subsequent periods of 30 minutes' duration and followed by inhalation of 0.4 mg fenoterol. In contrast to placebo, 500 mg theophylline in ethylenediamine or proxyphylline and diprophylline significantly decreased mean specific airway resistance (SRaw in cmH2O.s) from 31.2 to 23.6 or 34.2 to 23.5 at theophylline serum concentrations of 14.4 or 16.6 mg/L, respectively. Fenoterol lowered SRaw to about 40 percent of the respective baseline values independent of theophylline or placebo pretreatment. We conclude that the acute bronchodilator effect of theophylline is weak in comparison to inhaled beta agonists. Furthermore, proxyphylline and diprophylline cause a weak but not significant bronchodilation when compared to ethylenediamine.

UI	MeSH Term	Description	Entries
D002986	Clinical Trials as Topic	Works about pre-planned studies of the safety, efficacy, or optimum dosage schedule (if appropriate) of one or more diagnostic, therapeutic, or prophylactic drugs, devices, or techniques selected according to predetermined criteria of eligibility and observed for predefined evidence of favorable and unfavorable effects. This concept includes clinical trials conducted both in the U.S. and in other countries.	Clinical Trial as Topic
D004311	Double-Blind Method	A method of studying a drug or procedure in which both the subjects and investigators are kept unaware of who is actually getting which specific treatment.	Double-Masked Study,Double-Blind Study,Double-Masked Method,Double Blind Method,Double Blind Study,Double Masked Method,Double Masked Study,Double-Blind Methods,Double-Blind Studies,Double-Masked Methods,Double-Masked Studies,Method, Double-Blind,Method, Double-Masked,Methods, Double-Blind,Methods, Double-Masked,Studies, Double-Blind,Studies, Double-Masked,Study, Double-Blind,Study, Double-Masked
D004357	Drug Synergism	The action of a drug in promoting or enhancing the effectiveness of another drug.	Drug Potentiation,Drug Augmentation,Augmentation, Drug,Augmentations, Drug,Drug Augmentations,Drug Potentiations,Drug Synergisms,Potentiation, Drug,Potentiations, Drug,Synergism, Drug,Synergisms, Drug
D004400	Dyphylline	A THEOPHYLLINE derivative with broncho- and vasodilator properties. It is used in the treatment of asthma, cardiac dyspnea, and bronchitis.	Dihydroxypropyltheophylline,Diprophylline,Dilin,Diphylline,Dylix,Lufyllin,Neothylline
D005280	Fenoterol	A synthetic adrenergic beta-2 agonist that is used as a bronchodilator and tocolytic.	Berotec,Berotek,Fenoterol Hydrobromide,Fenoterol Hydrochloride,Partusisten,Phenoterol,Th-1165a,p-Hydroxyphenyl-orciprenaline,p-Hydroxyphenylorciprenaline,Hydrochloride, Fenoterol,Th 1165a,Th1165a,p Hydroxyphenyl orciprenaline,p Hydroxyphenylorciprenaline
D005541	Forced Expiratory Volume	Measure of the maximum amount of air that can be expelled in a given number of seconds during a FORCED VITAL CAPACITY determination . It is usually given as FEV followed by a subscript indicating the number of seconds over which the measurement is made, although it is sometimes given as a percentage of forced vital capacity.	Forced Vital Capacity, Timed,Timed Vital Capacity,Vital Capacity, Timed,FEVt,Capacities, Timed Vital,Capacity, Timed Vital,Expiratory Volume, Forced,Expiratory Volumes, Forced,Forced Expiratory Volumes,Timed Vital Capacities,Vital Capacities, Timed,Volume, Forced Expiratory,Volumes, Forced Expiratory
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000403	Airway Resistance	Physiologically, the opposition to flow of air caused by the forces of friction. As a part of pulmonary function testing, it is the ratio of driving pressure to the rate of air flow.	Airway Resistances,Resistance, Airway,Resistances, Airway
D000628	Aminophylline	A drug combination that contains THEOPHYLLINE and ethylenediamine. It is more soluble in water than theophylline but has similar pharmacologic actions. It's most common use is in bronchial asthma, but it has been investigated for several other applications.	Afonilum,Aminodur,Aminophyllin,Aminophylline DF,Cardophyllin,Carine,Clonofilin,Corophyllin,Diaphyllin,Drafilyn,Duraphyllin,Eufilina,Eufilina Venosa,Euphyllin,Euphyllin Retard,Euphylline,Godafilin,Mini-Lix,Mundiphyllin,Mundiphyllin Retard,Novophyllin,Phyllocontin,Phyllotemp,Somophyllin,Tari-Dog,Theophyllamin Jenapharm,Theophyllamine,Theophyllin EDA-ratiopharm,Theophylline Ethylenediamine,Truphylline,Ethylenediamine, Theophylline,Theophyllin EDA ratiopharm,Theophyllin EDAratiopharm
D001249	Asthma	A form of bronchial disorder with three distinct components: airway hyper-responsiveness (RESPIRATORY HYPERSENSITIVITY), airway INFLAMMATION, and intermittent AIRWAY OBSTRUCTION. It is characterized by spasmodic contraction of airway smooth muscle, WHEEZING, and dyspnea (DYSPNEA, PAROXYSMAL).	Asthma, Bronchial,Bronchial Asthma,Asthmas