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  • 1
    Electronic Resource
    Electronic Resource
    The effect of sodium cromoglycate delivered by Spinhaler and by pressurized aerosol on exercise-induced asthma in children (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 12 (1982), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Sixteen children completed a randomized placebo-controlled double-blind study comparing the efficacy of pre-treatment with (1) 20 mg sodium cromoglycate (SCG) powder delivered by Spinhaler, (2) 2 mg SCG delivered by pressurized aerosol and (3) placebo. The drug was administered 15 min before the 6 min of treadmill-running performed at the same time of day on 3 consecutive days in a climate chamber with a temperature of 23°C and a relative humidity of 40%,. All the patients, none of whom were taking systemic steroids, had shown a post-exercise fall in peak expiratory flow (PEF) of more than 15% from baseline when tested one day prior to the study. On the day with no pre-treatment the average post-exercise fall in PEF was 46% (±4) (mean ± s.e.mean). After pre-treatment with SCG powder the average fall in PEF was 21%, (±3), after pre-treatment with SCG aerosol the fall was 22% (±3) and after placebo a post-exercise fall of 31% (±5) was seen. Both forms of SCG were significantly better than pre-treatment with placebo. Comparing no pre-treatment with pre-treatment with placebo revealed a statistically significant difference (P 〈 0.001) indicating a placebo effect. It is concluded that this study design has a marked placebo effect. Both pre-treatment with 2 mg SCG delivered by pressurized aerosol and 20 mg delivered by Spinhaler is superior to placebo in conferring protection against exercise-induced asthma (EIA). No bronchodilating effect was seen in the first 15 min after administration of the drug.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2222.1982.tb02559.x
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  • 2
    Electronic Resource
    Electronic Resource
    Prevalence and predictors of bronchial hyperresponsiveness in children aged 7-16 years (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 44 (1989), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: To study the prevalence and possible predictors of bronchial responsiveness we examined a cross-section of 527 children aged 7–16 years from Copenhagen. The method used included an interview with the child and the parents, skin prick test with common allergens and se-IgE. Bronchial responsiveness was measured by a histamine inhalation test. We found that 79 (16%) of the children had bronchial hyperresponsiveness (BH), defined as a 20% fall in FEV1 with a provoking concentration of histamine (PC20) at 8 mg/ml or less. Atopic symptoms defined as asthma, rhinitis or eczema were significantly (P 〈 0.001) correlated to BH both in prevalence and degree of BH. None of the children with urticaria had BH. The degree of bronchial responsiveness was also significantly influenced (P 〈 0.001) by family disposition to atopy, whereas we found no correlation between BH and “passive” smoking, specific skin test in unselected children, or elevation of IgE in children without atopic symptoms. We conclude that BH is severest in children with asthma, independent of elevated IgE or positive skin prick test. Children with rhinitis, dermatitis, or asymptomatic BH have the same degree of BH; this differed from that in children with asthma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1989.tb02265.x
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  • 3
    Electronic Resource
    Electronic Resource
    The effect of astemizole on bronchial hyperresponsiveness and exercise-induced asthma in children (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 44 (1989), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The ability of the new generation H1-receptor antagonist, astemizole, to prevent histamine-induced airway obstruction and exercise-induced asthma (EIA) was studied in 20 children with asthma. The study was a randomised clinically controlled trial of oral astemizole versus placebo in a cross-over study. In each of the two treatment periods the children were tested at days 0, 6, 15 and 22 of therapy. The two treatment periods were separated by a washout period of 50 days, and at each visit a bronchial challenge with increasing concentrations of histamine followed by an exercise test was performed, and peak flow and asthmatic symptom score were recorded daily. The children tolerated significantly higher mean concentrations of histamine when treated with astemizole compared with placebo (P 〈 0.001). Astemizole postponed the response to exercise, but no change in the maximal response was found. No differences between the treatment periods were found regarding frequency of asthmatic symptoms or the daily recording of peak flow.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1989.tb02264.x
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  • 4
    Electronic Resource
    Electronic Resource
    Distribution of serum IgE in children and adolescents aged 7 to 16 years in Copenhagen, in relation to factors of importance (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 47 (1992), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The distribution of total serum-IgE and factors of importance for the level of IgE was studied in a random sample of 508 children and adolescents, aged 7–16 years, from Copenhagen. A detailed history about asthma, rhinitis, dermatitis and urticaria was obtained, and a physical examination, skin prick test with 9 common allergens, lung function test, bronchial challenge with inhaled histamine and exercise, and measurement of IgE (kU/1) were performed. The distribution of IgE among children and adolescents was found to exhibit a log normal distribution and a positive skin prick test, allergic symptoms, a family history of allergic diseases, age and smoking were found to be significantly related to an increased level of IgE. No relationship was found between increased bronchial responsiveness and IgE. The geometric mean of “normal” values of IgE (* 1 SD and *2 SD) of the Danish children and adolescents was 18 kU/1 (*4.7, * 18.2), suggesting that normal IgE values were within 330 kU/1. Measurement of IgE as the only screening for allergic disease is unreliable, as the predictive value of an elevated IgE in population samples was found to be 50%, whereas misclassification (1-specificity) of asymptomatic subjects as allergic because of an increased IgE was low (4%). In conclusion, total IgE is highly influenced by allergen skin reactivity. Further, this study suggests that normal IgE values were within 330 kU/1, although the range was wide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1992.tb00669.x
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  • 5
    Electronic Resource
    Electronic Resource
    Bacteria and endotoxin enhance basophil histamine release and potentiation is abolished by carbohydrates (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 45 (1990), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Histamine release caused by anti-IgE, specific antigens and calcium ionophore A23187 was examined in leukocyte suspensions from healthy individuals and patients allergic to house dust mite and birch pollen. Staphylococcus aureus and LPS from Salmonella typhimurium were found to cause a synergistic enhancement of the release. The potentiation of mediator release by the bacteria and the endotoxin depends on a binding to the basophilocyte, followed by a non-transient event, since the potentiating effect persists after preincubation of the cells with the LPS followed by washout and leaving the cells for 30 min at 37°C before stimulation with anti-IgE. The potentiation was abolished or reduced by galactose (10−7 and 10−6 M) and N-acetylglucosamine (10−6 and 10−5 M), acting by a binding to the basophil cell membrane, demonstrated by the persistence of effect after preincubation and washout of unbound sugar.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1990.tb01090.x
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  • 6
    Electronic Resource
    Electronic Resource
    Bacteria and endotoxin induce release of basophil histamine in patients with atopic dermatitis (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 42 (1987), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1987.tb02227.x
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  • 7
    Electronic Resource
    Electronic Resource
    Bronchodilating effect of ipratropium bromide inhalation powder and aerosol in children and adolescents with stable bronchial asthma (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 47 (1992), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Ulrik CS, Backer V, Bach-Mortensen N. Bronchodilating effect of ipratropium bromide inhalation powder and aerosol in children and adolescents with stable bronchial asthma.The purpose of this study was to compare the bronchodilating effect of ipratropium bromide (IB) administered by a conventional Ingelheim powder device system (IPI) and by a metered dose inhaler (MDI) in children and adolescents with stable bronchial asthma. Seventy patients, aged 7 to 16 years, with stable bronchial asthma from our outpatient clinic were tested for bronchial responsiveness to inhaled IB. Fifteen (21%) of the 70 subjects were found to have a substantial bronchial response to inhalation of 40 γg IB, i.e. at least 15% increase in FEV1 30 min after inhalation; the remaining 55 subjects had 〈15% increase in FEV1. No relationship between severity of asthma, age or sex and bronchial responsiveness to inhaled IB was found. Among the 15 subjects who had substantial bronchial response to IB, the increase in FEV1 after inhalation of fenoterol tended to be greater than the response to inhaled IB, although this did not reach statistical significance. Responders, i.e. subjects who had at least 15% increase in FEV1 after inhalation of IB, took part in a double-blind, cross-over study of the bronchodilating effect of 40 γg IB delivered by IPI and MDI. We found no significant differences in the bronchodilating effect during a 6-h follow-up. Maximum bronchodilating effect of IB was reached after 30 min and the maximum response lasted for 90 min. No side or adverse effects were observed following inhalation of IB. We conclude that before starting treatment with ipratropium bromide for bronchial asthma in children and adolescents, the patients should be tested for bronchial responsiveness to inhaled IB to find out whether they are responders or nonresponders; and further that, among responders, inhalation of powder is as effective as inhalation from a dosis-aerosol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1992.tb00953.x
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  • 8
    Electronic Resource
    Electronic Resource
    Relationship between viral antibodies and bronchial hyperresponsiveness in 495 unselected children and adolescents (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 48 (1993), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The purpose of this study was to investigate whether recent and previous subclinical viral respiratory infection can explain the presence of increased bronchial responsiveness to histamine. We studied a randomly selected population of 495 children and adolescents, aged 7–16 years, from Copenhagen. If the subjects had had symptoms of respiratory infection recently, the examination was postponed for at least 6 weeks. Bronchial hyperresponsiveness (BHR) to inhaled histamine was found in 79 (16%) of the subjects, of whom 28 had asthma. Forty-eight subjects (10%) had increased levels of serum IgM antibodies against either parainfluenza, influenza, adenovirus, or respiratory syncytial virus (RSV), reflecting a recently acquired infection. No association between BHR and antibodies against respiratory viruses was found, as 7 (8.9%) of the 79 subjects with BHR and 41 (9.9%) of the 416 subjects without BHR had viral antibodies. Furthermore, no association between degree of bronchial responsiveness and viral antibodies was found. Moreover, 251 individuals (51%) had signs of earlier RSV infection, i.e. IgG antibodies against RSV. No relationship was found between age of the subjects and the presence of antibodies against either respiratory viruses in general or IgG-RSV. No relationship was found between the presence of antibodies against RSV and BHR; furthermore, evidence of earlier RSV infection was unrelated to the level of lung function and degree of bronchial responsiveness. We conclude that increased bronchial responsiveness in asymptomatic, unselected schoolchildren and adolescents is not likely to be caused by recent or previous viral respiratory infections.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1993.tb00723.x
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  • 9
    Electronic Resource
    Electronic Resource
    Oral Sodium Cromoglycate Treatment of Atopic Dermatitis Related to Food Allergy (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 39 (1984), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Thirty-two children and two adults with chronic atopic dermatitis related to food allergy entered this double-blind crossover study comparing oral sodium cromoglycate (200–1600 mg/24 h) with placebo. Each treatment period comprised 6 weeks: 1 weeks on elimination diet, and 2 weeks on a normal. i.e. unrestricted diet. The diagnosis of food allergy was made after clinical improvement with elimination diet and relapse after challenge. Overall analysis of skin symptoms evaluated by means of clinical assessments and diary cards, opinions of treatment, and use of concomitant medication gave no evidence of any difference between sodium cromoglycate and placebo. Unusual symptoms were reported by 18 patients. In one case the patient was withdrawn during the sodium cromoglycate period because of side effects. The majority of symptoms with both treatments were stomach problems. Overall analysis of the laboratory data gave no significant differences between treatments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1984.tb00875.x
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  • 10
    Electronic Resource
    Electronic Resource
    A Clinical Comparison of Aerosol and Powder Administration of Beclomethasone Dipropionate in Childhood Asthma (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 39 (1984), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Forty children with childhood asthma were conducted through a double-blind cross-over study to compare the effect of 400 μg beclomethasone dipropionate administered as aerosol and powder (Rotacaps). Children with severe asthma derived more benefit from the steroid administered as aerosol judged from their peak (low performance in the morning, although neither evening peak flow nor symptom scores revealed any difference. It is concluded that the Rotacaps are an advantageous supplement to available medication for the treatment of asthmatic children, although it should be observed that, using equal amounts of BDP. powder administration seems less effective than aerosol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1984.tb01954.x
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