RESUMO
BACKGROUND: Although inhaled glucocorticoids are recommended for all stages of persistent asthma, compliance with long-term therapy is often poor, leading to significant morbidity and mortality. A simplified, once-daily dosing regimen may foster improved compliance. OBJECTIVE: To compare the efficacy and safety of once-daily (AM) administration of mometasone furoate dry powder inhaler (MF DPI) 200 microg and 400 microg with placebo in patients with asthma previously maintained only on short-acting inhaled beta-adrenergic receptor agonists. METHODS: This was a 12-week, double-blind, placebo-controlled, parallel group study. The mean change from baseline to endpoint (last treatment visit) for FEV1 was the primary efficacy variable. RESULTS: At endpoint, both doses of MF DPI were significantly more effective than placebo (P < or = .05) in improving FEV1. Based on morning peak expiratory flow rate, once-daily MF DPI 400 microg was more effective than placebo (P < or = .001) at endpoint. Both active treatments also demonstrated improvement at endpoint in asthma symptom scores, physician-evaluated response to therapy and use of rescue medication. Although both MF DPI dosages were efficacious, MF DPI 400 microg provided additional improvement in some measures of pulmonary function (eg, morning PEFR) when these agents were administered once daily in the morning. Both doses of MF DPI were well tolerated and treatment-related adverse events occurred at a similar incidence among the three treatment groups. CONCLUSIONS: The results of this study indicate that once-daily (AM) MF DPI provides a convenient and effective treatment option for patients with mild or moderate persistent asthma.
Assuntos
Antiasmáticos/uso terapêutico , Anti-Inflamatórios/uso terapêutico , Asma/tratamento farmacológico , Pregnadienodiois/uso terapêutico , Adolescente , Adulto , Idoso , Antiasmáticos/administração & dosagem , Anti-Inflamatórios/administração & dosagem , Criança , Método Duplo-Cego , Esquema de Medicação , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Furoato de Mometasona , Pregnadienodiois/administração & dosagem , Qualidade de Vida , Testes de Função Respiratória , Resultado do TratamentoRESUMO
A new formulation of mometasone furoate (MF) for administration by dry powder inhaler (DPI) was evaluated for the treatment of asthma. A 12-week, double-blind, placebo-controlled dose-ranging study compared the efficacy and safety of three doses of MF DPI (100, 200 and 400 mcg b.i.d) with beclomethasone dipropionate (BDP) 168 mcg b.i.d. administered by metered dose inhaler in 365 adult or adolescent patients being treated with inhaled glucocorticoids. The mean change from baseline to endpoint (last treatment visit) for forced expiratory volume in 1 sec (FEV1) was the primary efficacy variable. Secondary efficacy variables included other objective measures of pulmonary function [forced vital capacity (FVC), forced expiratory flow 25-75% (FEV25-75%.) and peak expiratory flow rate (PEFR)] as well as subjective measures of therapeutic response (patients' daily evaluation of asthma symptoms and physicians' evaluation). At endpoint, all four active treatments were significantly more effective than placebo (P < 0.01) in improving FEV1 (MF DPI 5 to 7%, BDP 3%, placebo -6.6%) and all other measures of pulmonary function (FVC: MF DPI 4 to 5%, BDP 2%, placebo -4.7%; FEF25-75%: MF DPI 6 to 18%, BDP 7.5%, placebo -9.5%; PEFR (AM): MF DPI 5 to 10%, BDP 5.7%, placebo -7%). A consistent trend was observed for better improvement in patients treated with MF DPI 200 mcg b.i.d. than with MF DPI 100 mcg b.i.d., with no apparent additional benefit of MF DPI 400 mcg b.i.d. Results for the MF DPI 100 mcg b.i.d. and BDP 168 mcg b.i.d. treatment groups were similar. Patients' and physicians' subjective evaluations of symptoms found similar improvement in the MF DPI 200 and 400 mcg b.i.d. treatment groups, which were slightly better than that in the MF DPI 100 mcg b.i.d. group. Symptoms tended to worsen in the placebo group. MF DPI was well tolerated at all dose levels and the most frequently reported treatment-related adverse effects were headache, pharyngitis and oral candidiasis. No evidence of HPA-axis suppression was detected in any treatment group. In summary, all doses of MF DPI were well tolerated and significantly improved lung function and MF DPI 400 mcg (200 mcg b.i.d.) was the optimal dose in this study of patients with moderate persistent asthma.
Assuntos
Antialérgicos/administração & dosagem , Anti-Inflamatórios/administração & dosagem , Asma/tratamento farmacológico , Adolescente , Adulto , Idoso , Antialérgicos/efeitos adversos , Anti-Inflamatórios/efeitos adversos , Criança , Método Duplo-Cego , Feminino , Volume Expiratório Forçado/efeitos dos fármacos , Humanos , Masculino , Fluxo Máximo Médio Expiratório/efeitos dos fármacos , Pessoa de Meia-Idade , Furoato de Mometasona , Pico do Fluxo Expiratório/efeitos dos fármacos , Pregnadienodiois , Resultado do Tratamento , Capacidade Vital/efeitos dos fármacosRESUMO
BACKGROUND: The efficacy and safety of mometasone furoate aqueous nasal spray (MFNS; Nasonex) 200 microg once daily for the treatment and prophylaxis of seasonal allergic rhinitis (SAR) and treatment of perennial rhinitis have been demonstrated in adults. However, the dose response of MFNS in pediatric patients has not yet been characterized. OBJECTIVE: This study was conducted to determine the dose-response relationship of 3 different doses of MFNS in a pediatric population. METHODS: This was a multicenter, double-blind, active- and placebo-controlled study of 679 children 6 to 11 years of age with histories of SAR and documented positive skin test responses. Patients were randomized to one of the following treatment groups for 4 weeks: MFNS 25 microgram once daily, MFNS 100 microgram once daily, MFNS 200 microgram once daily, beclomethasone dipropionate 84 microgram twice daily (168 microgram/day), or placebo. Physician evaluations were performed at days 4, 8, 15, and 29, and patient evaluations were analyzed for days 1 to 15 and 16 to 29. RESULTS: The mean reduction from baseline in physician-evaluated total nasal symptom scores at day 8 (the primary efficacy variable) was significantly greater in the MFNS and beclomethasone dipropionate groups than in the placebo group (P =.02). No significant differences were observed among the 3 MFNS groups. However, as treatment continued, symptoms in patients treated with MFNS 100 or 200 microgram once daily continued to improve, whereas those treated with MFNS 25 microgram once daily demonstrated little further improvement. By day 29, MFNS 100 and 200 microgram once daily both were significantly more effective than MFNS 25 microgram once daily in relieving symptoms of SAR, but MFNS 200 microgram provided no additional benefit over MFNS 100 microgram. All doses of MFNS were well tolerated, and cosyntropin stimulation tests performed before and after treatment found no evidence of hypothalamic-pituitary-adrenal axis suppression. CONCLUSION: These results indicate that the most appropriate therapeutic dosage of MFNS in the treatment of SAR in children 6 to 11 years of age is 100 microgram once daily. In addition, MFNS at doses up to 200 microgram once daily for 4 weeks was well tolerated and had no detectable effects on hypothalamic-pituitary-adrenal axis function.
Assuntos
Anti-Inflamatórios/administração & dosagem , Pregnadienodiois/administração & dosagem , Rinite Alérgica Sazonal/tratamento farmacológico , Administração Intranasal , Anti-Inflamatórios/farmacocinética , Criança , Pré-Escolar , Relação Dose-Resposta a Droga , Método Duplo-Cego , Tolerância a Medicamentos , Feminino , Glucocorticoides , Humanos , Masculino , Furoato de Mometasona , Placebos , Pregnadienodiois/farmacocinética , Equivalência TerapêuticaRESUMO
OBJECTIVE: To evaluate the effectiveness of inhibiting the formation of the 5-lipoxygenase products of arachidonic acid by the 5-lipoxygenase inhibitor zileuton in the treatment of mild-to-moderate asthma. DESIGN: Randomized, double-blind, placebo-controlled study. SETTING: University hospitals and private allergy and pulmonary practices. PATIENTS: A total of 139 persons with asthma who had a forced expiratory volume in 1 second (FEV1) of 40% to 75% of the predicted value and who were not being treated with inhaled or oral steroids. INTERVENTION: Zileuton, 2.4 g/d or 1.6 g/d, or placebo for 4 weeks. MEASUREMENTS: Airway function, beta-agonist use, and symptoms; inhibition of 5-lipoxygenase assessed by measurement of urinary leukotriene E4 (LTE4). RESULTS: Zileuton produced a 0.35-L (95% CI, 0.25 to 0.45 L) increase in the FEV1 within 1 hour of administration (P < 0.001 compared with placebo), equivalent to a 14.6% increase from baseline. After 4 weeks of zileuton therapy, airway function and symptoms improved, with the greatest improvements occurring in the 2.4 g/d group: This group's FEV1 increased by 0.32 L (CI, 0.16 to 0.48 L), a 13.4% increase, compared with a 0.05-L (CI, -0.10 to 0.20 L) increase in patients taking placebo (P = 0.02). Symptoms and frequency of beta-agonist use also decreased with zileuton, 2.4 g/d. The mean urinary LTE4 level decreased by 39.2 pg/mg creatinine (CI, 18.1 to 60.4 pg/mg creatinine) and 26.5 pg/mg creatinine (CI, 6.6 to 46.5 pg/mg creatinine) in the 2.4 g/d and 1.6 g/d groups, respectively, compared with a slight increase in the placebo group (P = 0.007 and P = 0.05). No difference was noted in the number of adverse events among treatment groups. CONCLUSIONS: Inhibition of 5-lipoxygenase can improve airway function and decrease symptoms and medication use in patients with asthma, suggesting that this inhibition can be useful therapy for asthma. Also, 5-lipoxygenase products may mediate part of the baseline airway obstruction in patients with mild-to-moderate asthma.
Assuntos
Asma/tratamento farmacológico , Hidroxiureia/análogos & derivados , Inibidores de Lipoxigenase , Adulto , Albuterol/uso terapêutico , Asma/enzimologia , Asma/fisiopatologia , Asma/urina , Método Duplo-Cego , Quimioterapia Combinada , Feminino , Volume Expiratório Forçado/efeitos dos fármacos , Humanos , Hidroxiureia/efeitos adversos , Hidroxiureia/uso terapêutico , Leucotrieno E4/urina , Masculino , Método Simples-CegoRESUMO
A double-blind, randomized, placebo-controlled, parallel trial was conducted to compare the efficacy and safety of terfenadine, 60 mg (immediate-release)/pseudoephedrine hydrochloride, 120 mg (controlled-release) (T/Ps) and clemastine fumarate, 1.34 mg (immediate-release)/phenylpropanolamine, 75 mg (sustained-release) (C/Ph) in a combination tablet b.i.d. in 178 patients (12-59 years of age) with symptoms of seasonal allergic rhinitis. After seven days of treatment, the total symptom scores recorded in the diaries of 175 patients showed that both therapies had a highly significant overall treatment effect when compared with placebo (P < or = .02). The overall level of improvement, as well as improvement of individual symptoms, was similar with the two therapies. Total symptom scores assigned by physicians to 170 patients showed significant and similar levels of improvement with both therapies when compared with placebo (P < .01). The two therapies were also similar on physicians' evaluations of overall effectiveness. Both therapies relieved most histamine-mediated symptoms as well as nasal congestion, although only T/Ps showed improvement of the latter symptom in both the patients' diaries and physicians' evaluations. Among 178 patients, drowsiness and fatigue occurred more often in the C/Ph group (25% and 11.7% for the two adverse events, respectively) than in the T/Ps group (10.2% and 1.7%, respectively). The incidence of insomnia and dry mouth/nose/throat was higher with T/Ps (23.7% and 11.9%, respectively) than with C/Ph (6.7% and 3.3%, respectively). No serious or unexpected adverse events were reported. These results indicate that T/Ps and C/Ph are both superior to placebo and equally effective in the treatment of symptoms of seasonal allergic rhinitis.(ABSTRACT TRUNCATED AT 250 WORDS)
Assuntos
Clemastina/uso terapêutico , Efedrina/uso terapêutico , Fenilpropanolamina/uso terapêutico , Rinite Alérgica Sazonal/tratamento farmacológico , Terfenadina/uso terapêutico , Adolescente , Adulto , Criança , Clemastina/efeitos adversos , Clemastina/normas , Combinação de Medicamentos , Efedrina/efeitos adversos , Efedrina/normas , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fenilpropanolamina/efeitos adversos , Fenilpropanolamina/normas , Segurança , Fases do Sono/efeitos dos fármacos , Terfenadina/efeitos adversos , Terfenadina/normas , Estados UnidosRESUMO
A multicenter open study was conducted throughout the 1984 fall pollen season to assess the possible development of tolerance or loss of efficacy to terfenadine in the maintenance therapy of patients with seasonal pollinosis. Patients with proven allergic pollinosis were entered into a 1-week initial treatment period taking terfenadine 60 mg bid and only those who responded to the initial treatment with "moderate" to "complete" relief continued on terfenadine throughout a 4 to 11-week pollen season for evaluation of continued efficacy. A total of 179 patients from five study centers were enrolled in the initial treatment period and 154 (86%) responded to terfenadine with "moderate" to "complete" relief of symptoms. Of these 154 patients who continued terfenadine treatment, approximately 90% of the patients maintained the same degree of relief throughout the pollen season. All symptoms of seasonal pollinosis including nasal congestion improved significantly the first day of treatment. This improvement in symptoms continued during the first week and remained unabated throughout the pollen season. The incidence of adverse events was low with sedation being reported by only 2.8% of patients at some time point during the study. It is concluded that terfenadine is a safe and effective non-sedating antihistamine in the maintenance therapy of seasonal allergic pollinosis and that tolerance is not noted during continued administration.
Assuntos
Compostos Benzidrílicos/uso terapêutico , Rinite Alérgica Sazonal/tratamento farmacológico , Adulto , Compostos Benzidrílicos/efeitos adversos , Ensaios Clínicos como Assunto , Feminino , Cefaleia/complicações , Antagonistas dos Receptores Histamínicos H1 , Humanos , Masculino , Rinite Alérgica Sazonal/complicações , Rinite Alérgica Sazonal/fisiopatologia , Índice de Gravidade de Doença , TerfenadinaRESUMO
A double-blind, parallel, multicenter study was undertaken in 215 ragweed skin test positive-patients with fall hay fever. The patients were randomized and treated for seven days with either 60 mg terfenadine twice daily, morning and evening, and a placebo at noon, or with 4 mg chlorpheniramine or placebo three times daily. The severity of nasopharyngeal itching, sneezing, rhinorrhea, nasal congestion, and itchy, watery, red eyes was ranked daily by patients and evaluated before and after treatment by the physician investigators. The patients reported a significant reduction in symptoms within one day. The physician investigators detected moderate to complete relief of symptoms in a greater proportion of the patients treated with terfenadine (70%) and chlorpheniramine (73%) than in the placebo-treated patients (48%). The incidence of sedation with terfenadine treatment (2.5%) was not different from that with placebo (2.4%) and both were lower than with chlorpheniramine (7.6%). We conclude that terfenadine is as effective as chlorpheniramine for the treatment of fall hay fever and that, unlike chlorpheniramine, the incidence of sedation with terfenadine was not different from placebo.
Assuntos
Compostos Benzidrílicos/uso terapêutico , Rinite Alérgica Sazonal/tratamento farmacológico , Adolescente , Adulto , Criança , Ensaios Clínicos como Assunto , Método Duplo-Cego , Feminino , Humanos , Masculino , TerfenadinaRESUMO
Children, aged 6 to 12 years, with fall-pollenosis symptoms, were evaluated for their response to a new antihistamine, terfenadine, in a multicenter (six centers) 1-week, double-blind, placebo-controlled trial. All had positive skin tests to grass/weed pollens and/or mold spores prevalent in the fall at each center. Patients were administered placebo or terfenadine as suspension on a randomized basis, with children weighing less than 30 kg receiving terfenadine suspension, 30 mg twice daily, and those weighing greater than 30 kg receiving 60 mg, twice daily. Of the 119 children enrolled, 79 received terfenadine and 40 received placebo. All but two (lost to follow-up) were included for the evaluation of drug safety, whereas 16 were excluded from the efficacy evaluation (11 receiving terfenadine and five receiving placebo) because of protocol noncompliance. Overall, varying degrees of control of symptoms were observed in 85% of the patients in the group taking terfenadine as compared to 60% in the group taking placebo. The symptoms of rhinorrhea, nasal congestion, and sneezing demonstrated the best response. There was no difference between the two groups in adverse events or side effects. Before and after treatment complete blood count, biochemical profile, and urinalysis revealed that there was no change from beginning to end and no difference between the groups. We conclude that terfenadine suspension is a safe, nonsedating antihistamine with an incidence of side effects no different from that of placebo. It is more effective than placebo in controlling symptoms of fall pollenosis in children.
Assuntos
Compostos Benzidrílicos/uso terapêutico , Antagonistas dos Receptores Histamínicos H1/uso terapêutico , Placebos/uso terapêutico , Rinite Alérgica Sazonal/tratamento farmacológico , Compostos Benzidrílicos/efeitos adversos , Criança , Ensaios Clínicos como Assunto , Método Duplo-Cego , Feminino , Antagonistas dos Receptores Histamínicos H1/efeitos adversos , Humanos , Masculino , Prontuários Médicos , Rinite Alérgica Sazonal/fisiopatologia , Estações do Ano , Suspensões , TerfenadinaRESUMO
Stapedius reflex decay, in response to a one-minute sound stimulus of 500 Hz occurred in six patients with myasthenia gravis. This decay is analagous to the decremental response of muscle action potentials to rapid nerve stimulation. Edrophonium chloride decreases the degree of decay. This represents a useful test in the diagnosis of myasthenia gravis.