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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 26 (1984), S. 707-709 
    ISSN: 1432-1041
    Keywords: enprofylline ; theophylline ; asthma ; clinical trial ; side-effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The bronchodilator effect and side-effects of a single oral dose of enprofylline were compared with the corresponding actions of a therapeutic dose of theophylline in 20 asthmatic patients, in a randomized cross-over clinical trial. Enprofylline 4 mg/kg and theophylline 8 mg/kg produced mean maximum plasma levels of 4.40±0.91 µg/ml and 16.5± 2.58 µg/ml and mean maximum increases in FEV1.0 of 38.5% and 34.8%, respectively. The degree of headache and nausea was estimated by a scoring system. Enprofylline produced significantly higher scores for headache than theophylline, and both drugs produced s light nausea. No other side-effects were seen. Enprofylline seems to have bronchodilating properties comparable to those of theophylline without producing severe sideeffects.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 29 (1985), S. 115-117 
    ISSN: 1432-1041
    Keywords: enprofylline ; theophylline ; pharmacokinetics ; patients ; theophylline requirement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary In patients requiring a high or low dose of theophylline the pharmacokinetics of theophylline and enprofylline were studied. The low-dose group took an average daily dose of 8.91 mg/kg body wt. and the high-dose group 24.75 mg/kg body wt. The average half-life of theophylline in the former was 7.11 h and in the latter 4.72 h. The average clearances (CL) of theophylline were 2.83 and 4.58 l/h, respectively. The daily oral intake of theophylline was negatively correlated with the theophylline t1/2 (r=−0.63). While the t1/2 of enprofylline was similar in the two groups, CL and volume of distribution (Vc) were slightly (about 30%) but significantly higher in patients requiring a high dose of theophylline. CL of enprofylline did not correlate with CL of theophylline, nor was the Vc of the two drugs correlated. Interindividual variability in t1/2 and CL was considerably lower for enprofylline than for theophylline.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 24 (1983), S. 323-327 
    ISSN: 1432-1041
    Keywords: enprofylline ; theophylline ; constant infusion ; bronchodilator effect ; adverse reactions ; pharmacokinetics ; asthmatic patients
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary In 6 asthmatic patients, the possibility of obtaining a steady state plasma level of 5 mg/l of enprofylline by administration of two constant rate infusions was examined. The simulated plasma concentration curves, based on information from pressessment of individual pharmacokinetic parameters, were in good agreement with the plasma levels obtained. The side-effects and bronchodilatation produced by enprofylline were compared to those obtained with theophylline at a steady state level of 15 mg/l. Enprofylline and theophylline caused a mean maximal increase in FEV1.0 of 14% and 2.6% per mg/l in plasma, respectively. Side-effects, head-ache, nausea and vomiting, became pronounced in 2 patients in whom the plasma enprofylline level was about 6 mg/l. No other serious adverse reaction was seen. It is suggested that enprofylline should be further evaluated as a possible anti-asthmatic drug.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 29 (1985), S. 425-427 
    ISSN: 1432-1041
    Keywords: asthma ; bambuterol ; terbutaline ; pharmacodynamics ; prodrug
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Twenty-seven asthmatic outpatients were randomly treated with bambuterol 30 mg administered once daily before going to bed and sustained release terbutaline 10 mg twice daily in a 14 day, double blind cross over study. On all the parameters of bronchodilator effects, namely peak expiratory flow rate (PEF), use of extra beta-agonist puffs, asthma symptom score, and patient preference for one of the treatments, no statistically or clinically significant difference between the two treatments was found. No significant difference between treatments was observed in the number or severity of side-effects. Bambuterol administered once daily appears to be an effective anti-asthmatic treatment.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 30 (1986), S. 7-11 
    ISSN: 1432-1041
    Keywords: bambuterol ; asthma ; dose response ; terbutaline ; bronchodilator ; side-effects ; plasma levels ; prodrug
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The bronchodilator activity and side-effects of treatment for 4 days with either 0.085, 0.170 or 0.34 mg/kg bambuterol b.i.d. (a prodrug of terbutaline) or 0.071 mg/kg terbutaline t.i.d. have been evaluated over 12 h, in a double-blind, randomized crossover trial in 19 asthmatic out-patients. Plasma terbutaline concentrations after bambuterol administration were smoother, with a ratio between the maximum and minimum values of about 1.4 compared to 2.6 for terbutaline. The plasma terbutaline level rose with dose, but by less than the increase in dose. The bronchodilator effect was related to the plasma terbutaline concentration in each treatment group, so bambuterol produced more prolonged bronchodilatation than treatment with terbutaline. Tremor and cardiac side-effects were most pronounced after administration of bambuterol 0.34 mg/kg. No severe side-effects were seen. Bambuterol produced stable plasma levels of terbutaline, indicating that as a prodrug of terbutaline it might possibly be administered once daily with good antiasthmatic effect.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Clinica Chimica Acta 36 (1972), S. 133-138 
    ISSN: 0009-8981
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Clinica Chimica Acta 35 (1971), S. 281-284 
    ISSN: 0009-8981
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 0009-8981
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Standardized bronchial allergen provocation was performed twice in nineteen extrinsic, well defined, stable asthmatic patients, with an interval of median 15 days (range 14–19) to study the reproducibility of the bronchial response. Smoking and medications were withheld prior to the provocation after a rigid scheme. Ten-fold increasing concentrations of allergen solution 0.9 ml were inhaled by tidal volume breathing for 5 min with intervals of 10 min. The bronchial response to inhaled allergen was determined by forced expiratory volume in the first sec (FEV1) and by total resistance to breathing (Rt) determined by an opening interrupter method. The provocation was continued until an allergen concentration causing at least 20% decrease of the postsaline FEV1 or a 40% increase in Rt was reached. A PC20-FEV1 and a PC40-Rt was calculated by interpolation on the log-dose-response curve. The reproducibility of PC20-FEV1 allergen was high with a 95% confidence interval (CI) for a single determination being the observed value ±0.83, ten-fold concentration difference, the intraclass correlation (IC) was 0.99 and the coefficient of variation 8.46%. Concerning PC40-Rt a 95% CI for a single determination was calculated being the observed value ±0.58, ten-fold concentration difference, IC was 0.99 and the coefficient of variation was 5.79%. No significant correlation was found between differences in pre-challenge FEV1 and Rt values and the corresponding PC20-FEV1 and PC40-Rt values. Least square regression between PC20-FEV1 and PC40-R1 was performed for the first and the second provocation (P 〈 0.05). We conclude that bronchial allergen challenge performed in stable asthmatics is highly reproducible and as such a valuable test in the diagnosis of allergic asthma when connected with anamnesis, skin-prick test and the level of specific immunoglobulin E in peripheral blood.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 25 (1995), S. 0 
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The purpose of this randomized patient- and observer-blinded cross-over trial was to evaluate the efficacy of chiropractic treatment in the management of chronic asthma when combined with pharmaceutical maintenance therapy. The trial was conducted at the National University Hospital's Out-patient Clinic in Copenhagen, Denmark. Thirty-one patients aged 18–44 years participated, all suffering from chronic asthma controlled by bronchodilators and/or inhaled steroids. Patients, or who had received chiropractic treatment for asthma within the last 5 years, who received oral steroids and immunotherapy, were not eligible. Patients were randomized to receive either active chiropractic spinal manipulative treatment or sham chiropractic spinal manipulative treatment twice weekly for 4 weeks, and then crossed over to the alternative treatment for another 4 weeks. Both phases were preceded and followed by a 2-week period without chiropractic treatment. The main outcome measurements were forced expiratory volume in the first second (FEV1), forced vital capacity (FVC), daily use of inhaled bronchodilators, patient-rated asthma severity and non-specific bronchial reactivity (n-BR). Using the cross-over analysis, no clinically important or statistically significant differences were found between the active and sham chiropractic interventions on any of the main or secondary outcome measures. Objective lung function did not change during the study, but over the course of the study, non-specific bronchial hyperreactivity (n-BR) improved by 36% (P= 0.01) and patient-rated asthma severity decreased by 34% (P= 0.0002) compared with the baseline values. The results do not support the hypothesis that chiropractic spinal manipulative therapy is superior to sham spinal manipulation in the management of pharmaceutically controlled chronic asthma in adults when administered twice weekly for 4 weeks.
    Type of Medium: Electronic Resource
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