Budesonide inhalation suspension: a review of its use in infants, children and adults with inflammatory respiratory disorders

Bioequivalence study of fluticasone propionate nebuliser suspensions in healthy Chinese subjects

Background

Fluticasone propionate is a synthetic trifluoro-substituted glucocorticoid, a highly selective glucocorticoid receptor agonist. Fluticasone propionate nebuliser suspensions is an inhaled corticosteroid with the low systemic bioavailability which provides a low risk (benefit outcome without the adverse effects that accompany systemically administered corticosteroids), referred as a first-line preventive agent for patients with persistent asthma. China has become one of the countries with the highest asthma mortality rate in the world in the past years. It urgently needs good generic drugs to help ease patients' burden and improve their quality of life.

Objective

The primary objective of this study was to evaluate the bioequivalence of fluticasone propionate nebuliser suspensions between test formulation (generic product) and reference formulation (original product, Flixotide Nebules®) with the pharmacokinetic parameters as the endpoint indicators and the secondary objective was to evaluate the safety of two inhalated fluticasone propionate nebuliser suspensions under the condition of fasting in healthy Chinese subjects.

Methods

The bioequivalence study was conducted with a single-center, randomized, open-label, single-dose, two sequences, two-period crossover design. 24 healthy subjects were randomly assigned into T-R and R-T sequence groups with 12 patients in each group. The subjects were administered 1 mg (2 mL:0.5 mg,plastic ampoules) of generic fluticasone propionate nebuliser suspension as a test formulation or Flixotide Nebules® as reference formulation and cross administration after sufficient washout period (5 days) for the second period study. The blood sample was collected at predetermined time points up to 48 h and the plasma concentration of fluticasone propionate was determined by HPLC-MS/MS in healthy subjects after inhalation of test or reference formulation. The non-compartment model method (NCA module) of the WinNonlin® software (version 8.3) was used to calculate the pharmacokinetic parameters (Cmax, AUC0-t, AUC0-∞) between the test formulation and the reference formulation were within the predefined range of 80.00% and 125.00%, bioequivalence of both formulations was demonstrated.

Results

The 90% confidence intervals of the T/R ratio of the geometric mean of Cmax, AUC0-t, and AUC0-∞ for both formulations were 90.24%-112.68%, 96.99%-112.27% and 96.41%-111.59% respectively, which were all within the bioequivalent range of 80%-125%. No severe, suspicious or unexpected serious adverse reactions were reported.

Conclusion

The test and reference formulations of fluticasone propionate nebuliser suspension were pharmacokinetic bioequivalent and were well tolerated and safe in all subjects.

Indian Guidelines on Nebulization Therapy

Inhalational therapy, today, happens to be the mainstay of treatment in obstructive airway diseases (OADs), such as asthma, chronic obstructive pulmonary disease (COPD), and is also in the present, used in a variety of other pulmonary and even non-pulmonary disorders. Hand-held inhalation devices may often be difficult to use, particularly for children, elderly, debilitated or distressed patients. Nebulization therapy emerges as a good option in these cases besides being useful in the home care, emergency room and critical care settings. With so many advancements taking place in nebulizer technology; availability of a plethora of drug formulations for its use, and the widening scope of this therapy; medical practitioners, respiratory therapists, and other health care personnel face the challenge of choosing appropriate inhalation devices and drug formulations, besides their rational application and use in different clinical situations. Adequate maintenance of nebulizer equipment including their disinfection and storage are the other relevant issues requiring guidance. Injudicious and improper use of nebulizers and their poor maintenance can sometimes lead to serious health hazards, nosocomial infections, transmission of infection, and other adverse outcomes. Thus, it is imperative to have a proper national guideline on nebulization practices to bridge the knowledge gaps amongst various health care personnel involved in this practice. It will also serve as an educational and scientific resource for healthcare professionals, as well as promote future research by identifying neglected and ignored areas in this field. Such comprehensive guidelines on this subject have not been available in the country and the only available proper international guidelines were released in 1997 which have not been updated for a noticeably long period of over two decades, though many changes and advancements have taken place in this technology in the recent past. Much of nebulization practices in the present may not be evidence-based and even some of these, the way they are currently used, may be ineffective or even harmful. Recognizing the knowledge deficit and paucity of guidelines on the usage of nebulizers in various settings such as inpatient, out-patient, emergency room, critical care, and domiciliary use in India in a wide variety of indications to standardize nebulization practices and to address many other related issues; National College of Chest Physicians (India), commissioned a National task force consisting of eminent experts in the field of Pulmonary Medicine from different backgrounds and different parts of the country to review the available evidence from the medical literature on the scientific principles and clinical practices of nebulization therapy and to formulate evidence-based guidelines on it. The guideline is based on all possible literature that could be explored with the best available evidence and incorporating expert opinions. To support the guideline with high-quality evidence, a systematic search of the electronic databases was performed to identify the relevant studies, position papers, consensus reports, and recommendations published. Rating of the level of the quality of evidence and the strength of recommendation was done using the GRADE system. Six topics were identified, each given to one group of experts comprising of advisors, chairpersons, convenor and members, and such six groups (A-F) were formed and the consensus recommendations of each group was included as a section in the guidelines (Sections I to VI). The topics included were: A. Introduction, basic principles and technical aspects of nebulization, types of equipment, their choice, use, and maintenance B. Nebulization therapy in obstructive airway diseases C. Nebulization therapy in the intensive care unit D. Use of various drugs (other than bronchodilators and inhaled corticosteroids) by nebulized route and miscellaneous uses of nebulization therapy E. Domiciliary/Home/Maintenance nebulization therapy; public & health care workers education, and F. Nebulization therapy in COVID-19 pandemic and in patients of other contagious viral respiratory infections (included later considering the crisis created due to COVID-19 pandemic). Various issues in different sections have been discussed in the form of questions, followed by point-wise evidence statements based on the existing knowledge, and recommendations have been formulated.

Early initiation of inhaled corticosteroids does not decrease acute chest syndrome morbidity in pediatric patients with sickle cell disease

Acute chest syndrome (ACS) is a leading cause of mortality in patients with sickle cell disease (SCD). Systemic corticosteroids decrease ACS severity, but the risk of readmission for vaso-occlusive crises (VOC) has limited their use. The efficacy of inhaled corticosteroids (ICS) as a safer alternative is currently unknown. An observational, historic cohort study compared patients with SCD with ACS who received ICS at admission (ICS) to those who did not (non-ICS). Outcome measures included rates of transfusion, oxygen requirement, BiPAP initiation, PICU transfer, intubation, readmission, hospital cost, and length of stay. One hundred twenty patients with SCD (55 non-ICS, 65 ICS) were included. A significantly higher proportion of the non-ICS group had bilateral infiltrates, but fewer had asthma. More children in the ICS group had BiPAP initiated, however transfer to the PICU, intubation, transfusion rates, oxygen requirement, hospital cost, length of stay, and readmission rates did not differ between groups. Regression analysis did not reveal any differences in outcomes, nor were outcomes changed when patients were separated based on the presence or absence of asthma. In this observational cohort study, ICS did not demonstrate a significant reduction in ACS morbidity, though ICS use should be studied in a prospective manner.

Postnatal steroids in extreme preterm infants: Intra-tracheal instillation using surfactant as a vehicle

Chronic Lung Disease (CLD) is a common respiratory morbidity in survivors following extreme preterm birth, and is associated with adverse neurodevelopment in the long term. Besides demographics, multiple risk factors are implicated in the pathogenesis of CLD. However, early lung inflammation appears to be the common pathway that leads to the pathological and clinical changes observed in CLD. Postnatal use of systemic steroids has been successful in reducing the incidence of CLD but resulted in unacceptable adverse neurodevelopmental outcomes. The efficacy of inhaled steroids is not yet established. We review the evidence of tracheal instillation of steroids using surfactant as a lipid vehicle, including published data on drug distribution, in vitro physical studies, and clinical trials in animals and human infants.

Steroid transnasal nebulization in the treatment of chronic rhinosinusitis

PURPOSE OF REVIEW

Chronic rhinosinusitis (CRS) is a challenging disease entity, affecting 8-15% of the general population. Topical steroids have been recommended as an integral part of the strategy for management of CRS. This review focuses on steroid transnasal nebulization as an alternative treatment option for CRS treatment.

RECENT FINDINGS

Modern inhalation devices comprise nebulizers, pressurized metered-dose inhalers and dry powder inhalers. Transnasal nebulization with pulsating flow can enhance sinus ventilation and increase drug deposition with longer residence time. Short-term steroid transnasal nebulization provides an effective and safe treatment option for CRS patients, as evidenced by significant clinically relevant improvements and lack of serious side-effects. The underlying mechanisms involve a combination of reduction in inflammatory cells, suppression of inflammatory cell-associated cytokines and chemotactic factors, and regulation of tissue remodeling. Efficacy of transnasal nebulization outweighs commonly used nasal sprays and nasal irrigation as delivery options for topical steroids; however, long-term safety with nebulized steroids needs to be investigated further.

SUMMARY

Steroid transnasal nebulization offers an alternative or a complementary treatment option to nasal sprays and nasal irrigation for management of patients with CRS. Long-term dose-dependent studies with nebulized steroids will be needed to fully appreciate the benefits of this treatment modality.

Intratracheal Administration of Budesonide/Surfactant to Prevent Bronchopulmonary Dysplasia

RATIONALE

Bronchopulmonary dysplasia (BPD) is an important complication of mechanical ventilation in preterm infants, and no definite therapy can eliminate this complication. Pulmonary inflammation plays a crucial role in its pathogenesis, and glucocorticoid is one potential therapy to prevent BPD.

OBJECTIVES

To compare the effect of intratracheal administration of surfactant/budesonide with that of surfactant alone on the incidence of death or BPD.

METHODS

A clinical trial was conducted in three tertiary neonatal centers in the United States and Taiwan, in which 265 very-low-birth-weight infants with severe respiratory distress syndrome who required mechanical ventilation and inspired oxygen (fraction of inspired oxygen, ≥50%) within 4 hours of birth were randomly assigned to one of two groups (131 intervention and 134 control). The intervention infants received surfactant (100 mg/kg) and budesonide (0.25 mg/kg), and the control infants received surfactant only (100 mg/kg), until each infant required inspired O2 at less than 30% or was extubated.

MEASUREMENTS AND MAIN RESULTS

The intervention group had a significantly lower incidence of BPD or death (55 of 131 [42.0%] vs. 89 of 134 [66%]; risk ratio, 0.58; 95% confidence interval, 0.44-0.77; P < 0.001; number needed to treat, 4.1; 95% confidence interval, 2.8-7.8). The intervention group required significantly fewer doses of surfactant than did the control group. The intervention group had significantly lower interleukin levels (IL-1, IL-6, IL-8) in tracheal aspirates at 12 hours and lower IL-8 at 3-5 and 7-8 days.

CONCLUSIONS

In very-low-birth-weight infants with severe respiratory distress syndrome, intratracheal administration of surfactant/budesonide compared with surfactant alone significantly decreased the incidence of BPD or death without immediate adverse effect. Clinical trial registered with www.clinicaltrials.gov (NCT-00883532).

Carbon nanotube-mediated delivery of budesonide to macrophages

A carbon nanotube-based carrier was developed for the delivery of anti-inflammatory budesonide to intracellular compartments of macrophages.

The protective effect of different airway humidification liquids to lung after tracheotomy in traumatic brain injury: The role of pulmonary surfactant protein-A (SP-A)

The purpose of this study was to establish a rat model of a brain injury with tracheotomy and compared the wetting effects of different airway humidification liquids, afterward, the best airway humidification liquid was selected for the clinical trial, thus providing a theoretical basis for selecting a proper airway humidification liquid in a clinical setting. Rats were divided into a sham group, group A (0.9% NaCl), group B (0.45% NaCl), group C (0.9% NaCl+ambroxol) and group D (0.9% NaCl+Pulmicort). An established rat model of traumatic brain injury with tracheotomy was used. Brain tissue samples were taken to determine water content, while lung tissue samples were taken to determine wet/dry weight ratio (W/D), histological changes and expression levels of SP-A mRNA and SP-A protein. 30 patients with brain injury and tracheotomy were selected and divided into two groups based on the airway humidification liquid instilled in the trachea tube, 0.45% NaCl and 0.9% NaCl+ambroxol. Blood was then extracted from the patients to measure the levels of SP-A, interleukin-6 (IL-6), interleukin-8 (IL-8) and tumour necrosis factor-α (TNF-α). The difference between group C and other groups in lung W/D and expression levels of SP-A mRNA and SP-A protein was significant (P<0.05). In comparison, the histological changes showed that the lung tissue damage was smallest in group C compared to the three other groups. Aspect of patients, 0.45% NaCl group and 0.9% NaCl+ambroxol group were significantly different in the levels of SP-A, IL-6, IL-8 and TNF-α (P<0.01). In the present study, 0.9% NaCl+ambroxol promote the synthesis and secretion of pulmonary surfactant, and has anti-inflammatory and antioxidant effects, which inhibit the release of inflammatory factors and cytokines, making it an ideal airway humidification liquid.

Effect of budesonide transnasal nebulization in patients with eosinophilic chronic rhinosinusitis with nasal polyps

BACKGROUND

There is little evidence on the efficacy of glucocorticoid transnasal nebulization therapy in patients with eosinophilic chronic rhinosinusitis with nasal polyps (CRSwNP).

OBJECTIVE

We sought to evaluate the immunologic and remodeling effects of budesonide transnasal nebulization in patients with eosinophilic CRSwNP.

METHODS

Sixty patients with eosinophilic CRSwNP were randomized to receive budesonide or placebo treatment for 14 days by means of transnasal nebulization in a double-blind manner. Endoscopic polyp size scores (maximum = 6 points, Kennedy score) and visual analog scale scores for nasal symptoms were assessed before and after treatment. Similarly, polyp samples were evaluated for inflammatory cytokines, matrix metalloproteinases (MMPs), and tissue inhibitors of metalloproteinases (TIMPs) by using an immunoassay; collagen by using histochemistry; eosinophils by using hematoxylin and eosin stain; and T-cell subsets by using flow cytometry.

RESULTS

Budesonide transnasal nebulization significantly reduced polyp size compared with placebo (mean difference between groups, -0.73 units; 95% CI, -1.15 to -0.32 units; P = .002) and improved symptoms. Polyp IL-5 and eotaxin expression decreased significantly, whereas TGF-β and IL-10 expression increased. Expression of IFN-γ and IL-17 was not altered. Budesonide transnasal nebulization consistently reduced eosinophil infiltration and TH2 cell frequency and increased natural regulatory T-cell and type 1 regulatory T-cell frequencies. Indices of remodeling, including albumin, MMP-2, MMP-7, MMP-8, and MMP-9, were significantly decreased, whereas collagen deposition and TIMP-1, TIMP-2, and TIMP-4 levels were significantly increased. Budesonide transnasal nebulization did not suppress the hypothalamic-pituitary-adrenal axis or cause any serious side effects.

CONCLUSION

Short-term budesonide transnasal nebulization is an effective and safe treatment option in patients with eosinophilic CRSwNP, achieving clinical improvement by regulating remodeling, cytokine expression, and T-cell subset distribution.

Review article: integrating budesonide-MMX into treatment algorithms for mild-to-moderate ulcerative colitis

BACKGROUND

5-Aminosalicylates (5-ASA) are first-line treatment for mild-moderately active ulcerative colitis (UC). When 5-ASAs fail, systemic corticosteroids have been the standard next step. Due to the significant side effect profile of systemic corticosteroids, alternative options in the treatment algorithm after 5-ASA failures are needed. Budesonide-Multi-Matrix System (MMX) is a novel oral formulation of budesonide that uses colonic release MMX technology to extend release of the drug to the colon. Now that budesonide-MMX has been approved for use in some countries, and pending in others we need to understand its position in the treatment algorithm for UC.

AIM

To review the available literature for budesonide-MMX and incorporate it into the treatment algorithm for mild-moderate UC.

METHODS

The available efficacy and safety literature regarding budesonide-MMX was reviewed, and compared to 5-ASAs and systemic corticosteroids.

RESULTS

In two large studies referred to as CORE (Colonic Release Budesonide trial), budesonide-MMX 9 mg daily was significantly more effective in achieving a combined end point of clinical and endoscopic remission than placebo in patients with mild-moderately active UC. Safety data are reassuring, with no clinically relevant differences between budesonide-MMX and placebo, including steroid-related side effects.

CONCLUSIONS

Budesonide-MMX 9 mg daily is an effective and safe treatment for induction in patients with mild-moderately active UC. At the current time, it should be considered in patients after 5-ASA failure and before systemic corticosteroids. Data are still needed to understand its role and dose beyond 8 weeks, and if it should be considered first line before 5-ASAs.

Once-daily budesonide MMX in active, mild-to-moderate ulcerative colitis: results from the randomised CORE II study

OBJECTIVE

Budesonide MMX is a novel oral formulation of budesonide that uses Multi-Matrix System (MMX) technology to extend release to the colon. This study compared the efficacy of budesonide MMX with placebo in patients with active, mild-to-moderate ulcerative colitis (UC).

DESIGN

Patients were randomised 1:1:1:1 to receive budesonide MMX 9 mg or 6 mg, or Entocort EC 9 mg (budesonide controlled ileal-release capsules; reference arm) or placebo once daily for 8 weeks. The primary endpoint was combined clinical and endoscopic remission, defined as UC Disease Activity Index score ≤1 with a score of 0 for rectal bleeding and stool frequency, no mucosal friability on colonoscopy, and a ≥1-point reduction in endoscopic index score from baseline.

RESULTS

410 patients were evaluated for efficacy. Combined clinical and endoscopic remission rates with budesonide MMX 9 mg or 6 mg, Entocort EC and placebo were 17.4%, 8.3%, 12.6% and 4.5%, respectively. The difference between budesonide MMX 9 mg and placebo was significant (OR 4.49; 95% CI 1.47 to 13.72; p=0.0047). Budesonide MMX 9 mg was associated with numerically higher rates of clinical (42.2% vs 33.7%) and endoscopic improvement (42.2% vs 31.5%) versus placebo. The rate of histological healing (16.5% vs 6.7%; p=0.0361) and proportion of patients with symptom resolution (23.9% vs 11.2%; p=0.0220) were significantly higher for budesonide MMX 9 mg than placebo. Adverse event profiles were similar across groups.

CONCLUSION

Budesonide MMX 9 mg was safe and more effective than placebo at inducing combined clinical and endoscopic remission in patients with active, mild-to-moderate UC.

Glucocorticoids in the treatment of neonatal meconium aspiration syndrome

Meconium aspiration syndrome is a serious neonatal disease with complex pathophysiology. With respect to the contribution of meconium-induced lung edema, inflammation and vasoconstriction on the course of the disease, glucocorticoids are increasingly used in the treatment of MAS despite the fact that principal questions on the choice of GCs derivative, mode of delivery and dosing have not been answered yet. To bring a complex insight into the topic, this article reviews the pathomechanisms of MAS, mechanisms of action of GCs, as well as the advantages and disadvantages of GCs administration in experimental models and newborns with MAS.

Acute pathophysiological effects of intratracheal instillation of budesonide and exogenous surfactant in a neonatal surfactant-depleted piglet model

BACKGROUND

Chronic lung disease continues to be a major complication in premature infants with severe respiratory distress syndrome (RDS). This is despite having advanced ventilatory care, prenatal corticosteroids, and postnatal surfactant therapies. The combined use of intratracheal corticosteroids and surfactant may not only recruit the lungs, but also alleviate pulmonary inflammation in severe RDS.

METHODS

Fifteen newborn piglets received repeated pulmonary saline lavage to induce surfactant-depleted lungs, mimicking neonatal RDS. They were randomly divided into three groups: control group receiving no treatment; surfactant (Surf) group, treated with standard intratracheally instilled surfactant (100 mg/kg); and Budesonide plus surfactant (Bude + Surf) group, treated with intratracheally administered mixed suspension of budesonide (0.5 mg/kg) and surfactant (100 mg/kg). Blood samples were taken every 30 minutes for 4 hours. Lung tissue was examined after the experiment.

RESULTS

Significantly better oxygenation with higher PaO(2) and alveolar-arterial oxygen difference was noted in the Surf and Bude + Surf groups, compared with the control group (p < 0.05), but there were no significant differences between the Surf and Bude + Surf groups. Pulmonary histologic damage was also markedly alleviated in both the Surf and Bude + Surf groups, compared with the control group, and lung injury scores were significantly decreased in the Surf and Bude + Surf groups, compared with the control group (p < 0.05).

CONCLUSIONS

Intratracheal instillation of surfactant or surfactant plus budesonide can improve oxygenation and pulmonary histologic outcome in neonatal surfactant-depleted lungs. The additional use of budesonide does not disturb the function of the exogenous surfactant. Intratracheal administration of a corticosteroid combined with surfactant may be an effective method for alleviating local pulmonary inflammation in severe RDS.

Budesonide/formoterol dry powder in asthma: an option for control as maintenance and reliever therapy

IMPORTANCE OF THE FIELD

Asthma is a heterogeneous disease with various components that may contribute to symptoms. Obtaining global control of is one of the fundamental parts of the management of this disease.

AREAS COVERED IN THIS REVIEW

The Cochrane trial database, Medline and Embase, were searched systematically, and approximately 20 respiratory journals and conference abstracts were searched manually. The search was limited to publications in English language of last 20 years and which included the keywords 'budesonide', 'formoterol', 'asthma' and 'control'.

WHAT THE READER WILL GAIN

The purposes of this review are: i) to discuss the rationale about possibility of using combination therapy administered with a single inhaler for both daily maintenance and relief as needed of breakthrough symptoms in asthma management; ii) to give readers the current status of clinical pharmacological treatment of asthma; iii) to discuss the evidence on the use of budesonide/formoterol dry powder in one inhaler.

TAKE HOME MESSAGE

Among the various inhalatory drugs, budesonide and formoterol can be conveniently delivered in one dry powder inhaler and simplify treatment by providing immediate step-up when symptoms increase. Alongside the anti-inflammatory component, formoterol provides both short- and long-acting bronchodilator effects with maintenance and reliever properties. The option of using one inhaler simplifies treatment by simultaneously providing bronchodilator and anti-inflammatory activity, thus enhancing compliance. As indicated in guidelines, all these characteristics are essential for optimizing asthma treatment and control.

A follow-up study of preterm infants given budesonide using surfactant as a vehicle to prevent chronic lung disease in preterm infants

OBJECTIVE

Our study of early intratracheal instillation of budesonide using surfactant as vehicle showed a significant decrease in death or chronic lung disease (CLD) in preterm infants with severe respiratory distress syndrome (RDS). We now report the long-term outcome at about 2 to 3 years of age.

STUDY DESIGN

Of the 75 potential survivors, 67 (90%) were studied (35 budesonide-treated, 32 control). All infants had birth weight <1500 g and had severe RDS requiring intermittent mechanical ventilation shortly after birth. The treated group received a mixture of budesonide and surfactant every 8 hours. The control group received only surfactant.

RESULTS

The physical growth and the neurological examinations were comparable between the groups at follow-up. Infants in the group treated with budesonide tended to have higher PDI and MDI scores than infants in the control group (79 +/- 20 vs 74 +/- 18 and 80 +/- 19 vs 75 +/- 20), but these differences were not statistically significant. The incidence of neurodevelopmental impairment was 11 (31%) in the treated group and 13 (40%) in the control group (P = .367).

CONCLUSIONS

Early intratracheal instillation of budesonide using surfactant as a vehicle significantly improved pulmonary outcome without causing long-term adverse effects.

Airway and systemic effects of soluble and suspension formulations of nebulized budesonide in asthmatic children

BACKGROUND

Using cyclodextrin with budesonide enables it to be formulated in a solution for nebulization.

OBJECTIVE

To observe the effects of a Captisol-enabled budesonide solution (CBIS), 60 microg twice daily, delivered via a nebulizer (eFlow), compared with a conventional budesonide suspension (Pulmicort Respules), 250 microg twice daily, delivered via another nebulizer (LC Plus), using fraction of exhaled nitric oxide (FE(NO)) and overnight urinary cortisol to creatinine ratio as the primary outcomes for efficacy and systemic bioactivity.

METHODS

A randomized, open-label, crossover study was conducted in 12 children with mild-to-moderate persistent asthma (aged 5-12 years). Measurements were performed after a 2-week steroid washout at baseline and at the end of each 2-week randomized treatment.

RESULTS

The nebulization time was shorter (95% confidence interval [CI], 0.83-5.63 minutes; P = .03) with CBIS (mean, 1.77 minutes) than with Pulmicort Respules (mean, 5.01 minutes). The reduction in FE(NO) with CBIS from pooled baseline was 2.45-fold (95% CI, 1.87-3.21; P < .001); and with Pulmicort Respules, 3.18-fold (95% CI, 2.26-4.47; P < .001). No statistically significant changes from pooled baseline in lung function and overnight urinary cortisol to creatinine ratio were observed with either treatment.

CONCLUSIONS

The nebulization time was shorter with CBIS compared with Pulmicort Respules. Both formulations exhibited similar anti-inflammatory activity in terms of reducing FE(NO), with no detectable difference between them when used in a putative microgram nominal dose ratio of 1:4. Neither formulation produced significant adrenal suppression.

Improved Efficiency of Budesonide Nebulization Using Surface-Active Agents

Our aim was to improve the efficiency of nebulised budesonide using surface-active agents. Cationic, anionic, and nonionic detergents were added to commercial budesonide suspension, and the particle size distribution during nebulization was measured using both cascade impaction and laser diffraction. Our results showed that the emitted dose was increased after addition of cationic (p < 0.001) and nonionic detergents (p < 0.01) compared with the commercial formulation alone. The respirable fraction was increased for all detergent formulations (p < 0.001) compared with the commercial formulation. We concluded that cationic and nonionic detergent increased the total output of budesonide from the Sidestream. All detergent formulations increased the respirable fraction of nebulized budesonide.

Early intratracheal instillation of budesonide using surfactant as a vehicle to prevent chronic lung disease in preterm infants: a pilot study

OBJECTIVE

Budesonide is an inhaled steroid with a strong topical effect but with minimal systemic effects; it has been effectively delivered to animal lungs using surfactant as a vehicle. The purposes of this study were to determine whether early intratracheal instillation of budesonide using surfactant as a vehicle would improve pulmonary status, reduce mortality, and reduce chronic lung disease morbidity.

PATIENTS AND METHODS

We conducted a prospective, randomized blind trial in 116 very low birth weight infants (< 1500 g) who had severe radiographic respiratory distress syndrome and required mechanical ventilation with fraction of inspired oxygen > or = 0.6 shortly after birth: 60 were in the treated group (intratracheal instillation of a mixture of 0.25 mg/kg of budesonide and 100.00 mg/kg of survanta, every 8 hours) and 56 were in the control group (100 mg/kg of survanta only, every 8 hours). The end point assessment was the number of infants who would die or develop chronic lung disease at 36 weeks' postconceptional age.

RESULTS

Infants in the treatment group required significantly lower mean airway pressure on day 1 and day 3 and had significantly lower oxygen index and PCO(2) during the first 3 days than infants in the control group. More infants were extubated in the treatment group than controls at 1 and 2 weeks. The combined outcome of deaths or chronic lung disease was significantly lower in the treatment group than in the control group (19 of 60 vs 34 of 56). No clinically significant adverse effects were observed during the study.

CONCLUSIONS

This pilot study indicated that early postnatal intratracheal instillation of budesonide using surfactant as vehicle significantly improved the combined outcome of death or chronic lung disease in small premature infants without causing immediate adverse effects. The results are encouraging, and a large sample multicenter trial is warranted.

Budesonide/formoterol: a review of its use as maintenance and reliever inhalation therapy in asthma

The use of combination budesonide/formoterol dry powder inhaler (Symbicort Turbuhaler) for both daily maintenance therapy and as-needed relief of breakthrough symptoms using a single inhaler is a new approach to asthma management that is indicated in patients with persistent asthma not adequately controlled by conventional regimens using reliever therapy with a short-acting beta(2)-adrenoceptor agonist alone. The administration of additional corticosteroid with each reliever inhalation in response to symptoms is expected to provide improved control of airway inflammation.Budesonide/formoterol maintenance and reliever therapy reduced the risk of severe asthma exacerbations compared with conventional regimens using a short-acting beta(2)-adrenoceptor agonist alone as reliever therapy in the majority of trials, while providing similar or better daily asthma control than higher fixed maintenance doses of budesonide or inhaled corticosteroid/long-acting beta(2)-adrenoceptor agonist combination therapy in patients with generally moderate to severe, uncontrolled, persistent asthma. The strategy offers the convenience of a single inhaler and simplifies treatment by providing immediate additional anti-inflammatory medication in response to asthma symptoms and immediate step-down when symptoms abate. The improved efficacy, with respect to exacerbation prevention, observed with budesonide/formoterol maintenance and reliever therapy in all double-blind comparative trials was achieved with a lower mean daily dose of inhaled corticosteroid or with fewer daily inhalations of reliever medication. Budesonide/formoterol maintenance and reliever therapy was well tolerated with an incidence of adverse events similar to that with conventional regimens. Therefore, it offers a new approach to therapy in patients with uncontrolled, persistent asthma; providing improved efficacy with a lower overall drug load.

Do airway clearance mechanisms influence the local and systemic effects of inhaled corticosteroids?

The role of airway clearance in inhaled drug therapy is complex. Disease-induced bronchoconstriction results in a central drug-deposition pattern where mucociliary clearance is most efficient. When drug-induced bronchodilation is achieved, deposition and uptake becomes more peripheral, and because there is less mucociliary clearance in the periphery, this will lead to an unintentional increase in lung exposure and enhance the risk of systemic side effects. In addition, mucociliary clearance is pathologically reduced in both asthma and chronic obstructive pulmonary disease. Among inhaled corticosteroids, rate of dissolution and lung uptake differs considerably. For the slowly dissolving, lipophilic steroids, the contribution of mucociliary clearance to these findings appears significant, and variability in lung and systemic exposure resulting from variable mucociliary function appears to be amplified. In addition, dose optimisation of non-stable asthma becomes more complex. The present review highlights the impact of mucociliary clearance on inhaled corticosteroid disposition and identifies critical areas where more research is needed.

Successful treatment of previously uncontrolled adult asthma with budesonide inhalation suspension: five-year case histories

OBJECTIVE

To determine whether nebulized budesonide inhalation suspension (BIS) is effective in treating adults with asthma that has been uncontrolled by inhaled therapies.

CASE SUMMARIES

Three adults with severe persistent asthma were switched to BIS after poor outcomes with other controller medications, including inhaled corticosteroids (ICSs). BIS dosages were initiated with 1 mg twice daily. Based on physician discretion as symptoms improved, dosages were decreased to 0.5 mg twice daily (2 pts.) or once daily (1 pt.). Patients were instructed to self-manage their asthma, increasing their dosages during periods of asthma worsening. Peak expiratory flow (PEF) was assessed before and after the initiation of BIS. The number of healthcare visits and oral corticosteroid courses recorded in patient medical records during the 3 years before and 5 years after initiation of BIS therapy were compared. In all 3 cases, BIS improved asthma control. BIS consistently increased PEF and reduced the number of urgent care visits and oral corticosteroid courses. All patients reported satisfaction with BIS therapy.

DISCUSSION

Despite proven effectiveness of ICSs for persistent asthma, some patients fail to respond optimally to treatment administered via an inhaler. These 3 case reports suggest that BIS is effective in treating adults with severe persistent asthma who fail to respond optimally to treatment with other ICS preparations. Failure to use inhalers properly, previous poor adherence in 1 case, or patient preference for the nebulizer might explain why nebulized BIS was more effective than other inhaler therapies.

CONCLUSIONS

Switching adults with uncontrolled asthma to BIS therapy may be a valuable treatment option for those who are unable to achieve optimal asthma control, despite asthma education and training on inhaler technique.

Alternate day calorie restriction improves clinical findings and reduces markers of oxidative stress and inflammation in overweight adults with moderate asthma

Asthma is an increasingly common disorder responsible for considerable morbidity and mortality. Although obesity is a risk factor for asthma and weight loss can improve symptoms, many patients do not adhere to low calorie diets and the impact of dietary restriction on the disease process is unknown. A study was designed to determine if overweight asthma patients would adhere to an alternate day calorie restriction (ADCR) dietary regimen, and to establish the effects of the diet on their symptoms, pulmonary function and markers of oxidative stress, and inflammation. Ten subjects with BMI>30 were maintained for 8 weeks on a dietary regimen in which they ate ad libitum every other day, while consuming less than 20% of their normal calorie intake on the intervening days. At baseline, and at designated time points during the 8-week study, asthma control, symptoms, and Quality of Life questionnaires (ACQ, ASUI, mini-AQLQ) were assessed and blood was collected for analyses of markers of general health, oxidative stress, and inflammation. Peak expiratory flow (PEF) was measured daily on awakening. Pre- and postbronchodilator spirometry was obtained at baseline and 8 weeks. Nine of the subjects adhered to the diet and lost an average of 8% of their initial weight during the study. Their asthma-related symptoms, control, and QOL improved significantly, and PEF increased significantly, within 2 weeks of diet initiation; these changes persisted for the duration of the study. Spirometry was unaffected by ADCR. Levels of serum beta-hydroxybutyrate were increased and levels of leptin were decreased on CR days, indicating a shift in energy metabolism toward utilization of fatty acids and confirming compliance with the diet. The improved clinical findings were associated with decreased levels of serum cholesterol and triglycerides, striking reductions in markers of oxidative stress (8-isoprostane, nitrotyrosine, protein carbonyls, and 4-hydroxynonenal adducts), and increased levels of the antioxidant uric acid. Indicators of inflammation, including serum tumor necrosis factor-alpha and brain-derived neurotrophic factor, were also significantly decreased by ADCR. Compliance with the ADCR diet was high, symptoms and pulmonary function improved, and oxidative stress and inflammation declined in response to the dietary intervention. These findings demonstrate rapid and sustained beneficial effects of ADCR on the underlying disease process in subjects with asthma, suggesting a novel approach for therapeutic intervention in this disorder.

Use of nebulized inhaled corticosteroids among older adult patients: an assessment of outcomes

BACKGROUND

Inhaled corticosteroids (ICSs) are used by patients of all ages, but older patients may have difficulty with conventional inhalation devices and therefore may benefit from the easy-to-use delivery mechanism of the nebulizer.

OBJECTIVE

To compare the outcomes, resource use, and health care costs of patients prescribed nebulized ICSs before and after treatment.

METHODS

All patients 50 years and older prescribed nebulized ICSs were identified from a nationally representative managed care claims database (1999-2003). Patients with 1 year of continuous enrollment were analyzed using a retrospective cohort design; outcomes, resource use, and costs were measured and compared 6 months before and 6 months after the initial nebulized ICS prescription.

RESULTS

A total of 2,178 patients were identified for participation in the study, of whom 668 were analyzed. Patients were prescribed nebulized ICSs primarily for asthma (57.4%) and chronic obstructive pulmonary disease (52.1%). Nebulized ICSs were prescribed mostly by primary care physicians and pulmonologists. More than 40% of patients used nebulized ICSs persistently (at least 1 refill); persistent users averaged 123.4 days of use during 6 months of follow-up. There was a significant decrease in systemic corticosteroid use among persistent users (48.0% vs 38.8%; odds ratio, 0.7; 95% confidence interval, 0.5-1.0; P = .03). There was an emergency department visit in 20.2% and 15.0% of persistent users before and after the index date, respectively (odds ratio, 0.7; 95% confidence interval, 0.45-1.09; P = .12); 20.5% and 17.5% were hospitalized before and after the index date, respectively (odds ratio, 0.8; 95% confidence interval, 0.54-1.27; P = .38). No significant difference occurred in total health care costs during follow-up compared with baseline.

CONCLUSIONS

In this retrospective cohort study, older patients who used nebulized ICSs persistently demonstrated fewer emergency department visits and systemic corticosteroid use than before nebulized ICS use. These improved outcomes were not associated with an increase in health care costs.

Budesonide inhalation suspension for the treatment of asthma in infants and children

On the basis of the well recognised role of inflammation in the pathogenesis of asthma, anti-inflammatory therapy, in the form of inhaled corticosteroids, has become the mainstay of treatment in patients with persistent asthma. Budesonide inhalation suspension (BIS) is a nonhalogenated corticosteroid with a high ratio of local anti-inflammatory activity to systemic activity. Furthermore, BIS is approved in >70 countries for the maintenance treatment of bronchial asthma in both paediatric and adult patients (approval is limited to paediatric patients in the US and France).Randomised, double-blind, placebo-controlled trials conducted in >1000 children have demonstrated the efficacy of BIS in children with persistent asthma of varying degrees of severity. In children frequently hospitalised with uncontrolled asthma, initiation of BIS therapy can reduce the need for emergency intervention. Moreover, limited data suggest that BIS is effective for the treatment of acute exacerbations of asthma in children and may reduce the need for short courses of oral corticosteroids.BIS is well tolerated in children, with an adverse event profile similar to that of placebo, and no clinically relevant changes in adrenal function have been demonstrated during the course of short- and long-term (1-year) studies. Small but statistically significant reductions in growth velocity have been demonstrated with BIS over 1 year of treatment. However, available evidence suggests that growth effects are transient in children receiving budesonide and that these children eventually achieve full adult height.

Budesonide-formoterol (inhalation powder) in the treatment of COPD

The budesonide-formoterol dry powder inhaler (Symbicort Turbuhaler 160/ 4.5-640/18 microg/day) contains the long-acting beta2-adrenoreceptor agonist formoterol and the inhaled corticosteroid budesonide. Two large, 12-month trials examined the effect of budesonide-formoterol 160/4.5 microg twice daily in COPD patients who met these criteria. The studies were identical, except one in which the patients had received oral prednisolone 30 mg/ day and had inhaled formoterol 4.5 microg twice daily for 2 weeks before randomization. In terms of the FEV1, budesonide-formoterol produced an effect greater than that of both budesonide alone and formoterol alone reported in previous studies. The combination was generally more effective than either of the components in terms of peak expiratory flow, symptoms, and exacerbations. These advantages of the combination over those of either budesonide alone or formoterol alone were quite consistent. Improving lung function and decreasing symptoms significantly, budesonide-formoterol combination therapy provides significant clinical improvements in COPD, despite the limited reversibility of impaired lung function in the disease.

Budesonide and formoterol combination for the treatment of chronic obstructive pulmonary disease

Chronic obstructive pulmonary disease (COPD) is a major cause of morbidity and mortality throughout the world. Current guidelines recommend the addition of inhaled steroids to bronchodilators, which are central to the symptomatic management of COPD in patients with severe disease. Budesonide/formoterol is a combination inhaled steroid and long-acting bronchodilator delivered by a dry-powder inhaler, approved for use in COPD. Two large, randomised, double-blind, 12-month studies found that combination budesonide/formoterol is more effective than either component alone in addressing many important aspects of the disease, such as pulmonary function, symptoms, use of relief medication, health-related quality of life and exacerbation in patients suffering from severe COPD. This review discusses the pharmacological and clinical properties of the drug.

Factors guiding the choice of delivery device for inhaled corticosteroids in the long-term management of stable asthma and COPD: focus on budesonide

Inhaled corticosteroids (ICSs) have become the mainstay of chronic controller therapy to treat airways inflammation in asthma and to reduce exacerbations in chronic obstructive pulmonary disease. An array of ICSs are now available that are aerosolized by a range of delivery systems. Such devices include pressurized (or propellant) metered-dose inhalers (pMDIs), pMDIs plus valved holding chambers or spacers, breath-actuated inhalers, and nebulizers. More recently, dry-powder inhalers (DPIs) were developed to help overcome problems of hand-breath coordination associated with pMDIs. The clinical benefit of ICSs therapy is determined by a complex interplay between the nature and severity of the disease, the type of drug and its formulation, and characteristics of the delivery device together with the patient's ability to use the device correctly. The ICSs budesonide is available by pMDI, DPI, and nebulizer-allowing the physician to select the best device for each individual patient. Indeed, the availability of budesonide in three different delivery systems allows versatility for the prescribing physician and provides continuity of drug therapy for younger patients who may remain on the same ICSs as they mature.

Optimizing inhaled corticosteroid therapy in children with chronic asthma

Asthma is the most common chronic illness among children, and inhaled corticosteroids (ICS) are the most effective long-term therapy available for suppressing airway inflammation in persistent asthma. While the primary aim of ICS therapy is good efficacy with minimal side effects, early diagnosis and treatment of asthma can also improve asthma control and normalize lung function, and may prevent irreversible airway injury. Poor patient compliance is a major barrier to treatment. Simplified dosing regimens (e.g., once-daily administration), good inhaler technique, and education of the patient/caregiver should improve patient compliance. Concerns over ICS therapy are often based on the potential for systemic effects associated with oral corticosteroids (e.g., effects on bone mineral density, or growth suppression in children). Since adverse events are associated with high doses of ICS, the dose in all patients should be titrated to the minimum effective dose required to maintain control. Optimal distribution of an ICS in the lungs rather than the systemic compartment is affected by several factors, including the drug's pharmacokinetic profile, inhaler type, inhaler technique, and drug particle size. For young patients unable to use a dry-powder inhaler or pressurized metered-dose inhaler, a nebulizer facilitates drug delivery through passive inhalation; ICS therapy in the form of budesonide inhalation suspension can be given to children with persistent asthma from 12 months of age. In conclusion, selecting a drug with good efficacy and minimal side effects, such as budesonide, together with an easy-to-use delivery system and ongoing patient/caregiver education, is important in optimizing ICS therapy for children with persistent asthma.

Severe bronchiolitis in children

Bronchiolitis is a common, acute, contagious lower respiratory tract illness of infants and young children. The majority of cases are secondary to respiratory syncytial virus. There are a number of risk factors for severe disease, including children less than six weeks of age and patients with atopy and/or asthma. The management requires vigilant monitoring and high-quality supportive care, including impressive use of fluids and nutritional support. Further research on anti-virals is essential to prevent respiratory syncytial virus induced bronchiolitis. Fortunately, the prognosis for the majority of normal infants who develop bronchiolitis is good.

Budesonide/formoterol: in chronic obstructive pulmonary disease

Budesonide/formoterol is a fixed-dose combination of the corticosteroid budesonide and the long-acting beta2-agonist formoterol, and is inhaled via the Turbuhaler device. In two large, randomised, double-blind, 12-month studies, patients with severe chronic obstructive pulmonary disease (COPD) receiving budesonide/formoterol 320/9 microg twice daily had a significantly higher forced expiratory volume in 1 second (FEV1) and significantly higher morning and evening peak expiratory flow at trial endpoint than recipients of budesonide or placebo; FEV1 was significantly higher than with formoterol in the larger study. In both studies, the rate of COPD exacerbations and exacerbations requiring oral corticosteroids was significantly reduced with budesonide/formoterol versus formoterol and placebo. Moreover, the time to first exacerbation was significantly prolonged with budesonide/formoterol versus all other treatment arms in the larger study. At 12 months, significant improvements in health-related quality-of-life scores were seen with budesonide/formoterol versus placebo in both studies. The reduction in total and individual symptom scores was significantly greater with budesonide/formoterol than with budesonide or placebo in the smaller study. Budesonide/formoterol was generally well tolerated by patients with severe COPD. The tolerability profile of the combination was similar to that of the individual components with no increase in the incidence of adverse events.

Cough after inhalation of corticosteroids delivered from spacer devices in children with asthma

Children using a spacer device rather than another device for delivering inhaled corticosteroids (ICS) has been identified as a risk factor for cough immediately after inhalation. The aim of this study was to point out the different factors influencing the occurrence of such lateral side-effects. We studied this local side-effect in 402 asthmatic children (55.6 +/- 34.9 months; 65.6% boys) treated for at least 1 month with beclomethasone dipropionate (n = 331), budesonide (n = 47) or fluticasone propionate (n = 24) delivered from pressurized metered-dose inhalers and small (75.1%) or large volume (24.8%) spacer devices mainly used with face mask (90.7%). A total of 219 patients (54.5%), treated with either high doses of ICS or ICS and long-acting beta2-agonist, were considered as having severe asthma. Cough was reported after each inhalation of corticosteroids in 216 patients (53.7%). Among them, about 30% also complained of cough with beta2-agonists. Despite different propellants and dispersants, all corticosteroids induced cough similarly. Cough was not linked with asthma severity, but was significantly related to therapy duration and use of long-acting beta2-agonist. Type and volume of the spacer device, use of a face mask or mouthpiece were not influencing factors. Cough after inhalation of corticosteroids delivered from spacer devices is a frequent local side-effect in children with asthma. This side effect can greatly alter compliance. A practitioner must be sought at each visit.

The role of budesonide in adults and children with mild-to-moderate persistent asthma

Asthma, a chronic and potentially life-threatening disease of the airways, affects patients of all ages. Inhaled corticosteroids (ICS) are the recommended first-line therapy for patients with persistent asthma. To review the clinical efficacy and tolerability data available on budesonide in the treatment of mild-to-moderate persistent asthma, a MEDLINE database search was performed for 1996-2003 using the following key words: budesonide, inhaled corticosteroid, efficacy, safety, systemic. When administered once or twice daily, budesonide effectively controls asthma in children, adolescents, and adults with mild-to-moderate asthma. Budesonide can be delivered effectively via a dry powder inhaler (Pulmicort Turbuhaler) in patients aged > or = 6 years or as an inhalation suspension (Pulmicort Respules) in children as young as 12 months. With over 20 years' clinical exposure, budesonide has been demonstrated to be well tolerated in the treatment of chronic asthma in patients as young as 12 months. Specifically, at doses required to treat mild or moderate persistent asthma, budesonide does not affect hypothalamic-pituitary-adrenal axis function, bone mineral density, cataract formation, or final adult height. As Pulmicort Turbuhaler, budesonide is the only ICS to achieve a Food and Drug Administration pregnancy category B rating. Early intervention with budesonide is recommended in asthma management: maximum benefit from therapy is reported in patients treated within 2 years of disease recognition. Budesonide is effective and well tolerated in the control of mild-to-moderate persistent asthma in patients aged 12 months and older. There is no evidence for variation in efficacy in population subgroups.

Preclinical properties of budesonide: translation to the clinical setting

BACKGROUND

Since the introduction of inhaled corticosteroids (ICSs) nearly 30 years ago, the management of asthma has been transformed. It is now understood that asthma is primarily a disease of chronic inflammation, even in its milder forms, and that to delay treatment may lead to deterioration in lung function. International treatment guidelines for asthma recommend early intervention with a potent ICS, with the greatest benefit observed when treatment is started within 2 years of the onset of symptoms. Each of the currently available ICSs has distinct physical and pharmacokinetic properties and is delivered via different devices.

OBJECTIVE

This article brings together the findings and concepts presented in this supplement. It provides an overview of budesonide's predicted clinical efficacy and tolerability in patients with asthma based on its physical properties and pharmacokinetic and pharmacodynamic characteristics.

CONCLUSIONS

Budesonide's physical properties and pharmacokinetic and pharmacodynamic profiles help predict its clinical efficacy and tolerability when used as early intervention in asthma. Study results indicate that lung deposition of budesonide is increased by delivery via dry-powder inhaler, enhancing the drug's efficacy in patients with newly diagnosed mild persistent asthma. The preclinical, clinical, and safety data support budesonide's predicted performance in the clinical setting.

The impact of budesonide and other inhaled corticosteroid therapies in the management of asthma in children and adults

BACKGROUND

Since the recognition that asthma is characterized by extensive inflammation of the airways, the use of inhaled corticosteroids (ICSs) as controller therapy has become central to successful disease management. As the prevalence of asthma increases worldwide, there is concern about increasing numbers of patients with untreated or undertreated asthma, which may lead to deterioration in disease control, with direct effects on morbidity and mortality rates. The costs attributed to asthma translate into a considerable economic burden, from the direct costs of medical treatment to the costs incurred through lost work or school days. International treatment guidelines currently recommend early intervention with ICS therapy to improve lung function and disease control.

OBJECTIVE

This article reviews the role of therapy with ICSs, particularly budesonide, in improving the management of asthma in patients of all ages and in reducing the economic and social burdens of this disease.

RESULTS

Randomized, controlled clinical studies confirm the efficacy of early intervention with ICSs in patients with mild persistent asthma. Regular use of an ICS can reduce the number of exacerbations and hospitalizations in patients of all ages and with all disease severities.

CONCLUSIONS

Budesonide has a well-established efficacy and safety profile. Its once-daily dosing may contribute to improved adherence and cost-effectiveness.

Rapidly developing Cushing syndrome in a 4-year-old patient during combined treatment with itraconazole and inhaled budesonide

A 4-year-old boy with cystic fibrosis developed hypertension, rapid weight gain and a moon face 2 weeks after starting a combined treatment of oral itraconazole and inhaled budesonide for a suspected allergic bronchopulmonary aspergillosis. Adrenal suppression was documented and found to persist 3 months after stopping this combined treatment.

CONCLUSION

To the best of our knowledge, this is the first time that an iatrogenic Cushing syndrome in a young child with cystic fibrosis after such combined treatment is reported. The inhibition of cytochrome P4503A by intraconazole and a higher glucocorticoid tissue sensitivity is suggested as the underlying mechanism.

Role of budesonide as maintenance therapy for children with asthma

Asthma is a chronic inflammatory disease of the airways. Inhaled corticosteroids are recognized as the preferred long-term control medication for persistent asthma based on their anti-inflammatory properties and significant evidence of efficacy. Inhaled budesonide is the most carefully characterized inhaled corticosteroid for childhood asthma. It is available for administration in children down to six months of age and to date has an excellent safety profile.

Simultaneous quantification of budesonide and its two metabolites, 6beta-hydroxybudesonide and 16alpha-hydroxyprednisolone, in human plasma by liquid chromatography negative electrospray ionization tandem mass spectrometry

A sensitive, rapid and selective liquid chromatography negative electrospray ionization tandem mass spectrometry [LC-(-)ESI-MS-MS] method has been developed and validated for the simultaneous quantification of budesonide (BUD) and its major metabolites, 6beta-hydroxybudesonide (OH-BUD) and 16alpha-hydroxyprednisolone (OH-PRED) in human plasma. The method was validated over a linear range from 0.1 to 10 ng/mL for all three analytes using a solid-phase extraction procedure with 9-fluoro-hydrocortisone as the internal standard. The between-day and within-day coefficients of variation for all compounds were < or =20% at the concentrations of lower limit of quantification and < or =15% at other quality control concentrations. The utility of this assay was demonstrated by monitoring BUD, OH-BUD and OH-PRED plasma concentrations in one healthy subject for 24 h following a 3 mg oral dose of budesonide, administered as a pH modified release capsule (Budenofalk) to healthy volunteers.

Combined budesonide/formoterol turbuhaler treatment of asthma

OBJECTIVE

To provide product information; review and analyze the clinical literature studying combination therapy, budesonide, and formoterol in asthmatics; and to define the role for this therapy in asthma treatment.

DATA SOURCES

A MEDLINE search (1990-September 2001) was conducted to identify the primary literature. Bibliographies were reviewed for further relevant citations.

STUDY SELECTION/DATA EXTRACTION

All randomized, blinded, controlled studies at least 3 months in duration exploring the efficacy of the combination of budesonide and formoterol (in 1 or separate formulations) compared with other treatments were selected to be included in the review of clinical studies.

DATA SYNTHESIS

The combination of budesonide and formoterol was more effective than increasing the dose of budesonide in patients with moderate or severe persistent asthma and in patients with mild asthma not previously controlled with inhaled corticosteroids. Milder corticosteroid-naïve asthmatics did not derive benefit compared with inhaled corticosteroids alone.

CONCLUSIONS

Combination therapy in 1 device is a preferred treatment option in patients with moderate to severe persistent asthma and in those with milder asthma not controlled with inhaled corticosteroids. Advantages of this product include rapid onset of action, long duration of action, and a wide dosing range to assist with titration. Further research is required to evaluate this therapy in asthmatic children <5 years old and in patients with oral corticosteroid-dependent asthma. Investigations into the effect of this combination product on other disease outcomes, such as quality of life and productivity, will further define the role for this drug therapy.

Efficacy of budesonide in moderate to severe asthma

BACKGROUND

The worldwide prevalence of asthma is increasing by approximately 50% per decade. Budesonide is one of several inhaled corticosteroids available for the treatment of asthma and has been extensively evaluated in clinical trials.

OBJECTIVE

This article reviews the published literature on the efficacy of budesonide in the management of adult and pediatric patients with moderate to severe asthma and compares budesonide with other inhaled corticosteroids and nonsteroidal treatment options.

METHODS

All controlled, randomized studies in patients with moderate or severe asthma were considered for inclusion. Relevant studies were identified through a MEDLINE search of the period from 1980 to 2000 using the terms budesonide plus efficacy, with or without the termsfluticasone, mometasone, and beclomethasone. The manufacturer's reference database was used to identify additional publications.

RESULTS

Budesonide is associated with a dose-response effect in adults and children with moderate to severe asthma. The data on budesonide are in line with the current recommendation for a high starting dose of inhaled corticosteroid (800 microg/d), followed by downward titration to the minimal effective dose. Budesonide administered by Turbuhaler (AstraZeneca Pharmaceuticals LP, Wilmington, Del) dry-powder inhaler (DPI) was effective at a significantly lower dose than beclomethasone dipropionate (BDP) administered by pressurized metered-dose inhaler (pMDI) (P = 0.009), whereas its efficacy was similar to that of BDP delivered by hydrofluoroalkane pMDI and that of fluticasone propionate administered by DPI. Inhaled budesonide therapy was shown to be oral corticosteroid sparing in patients with severe asthma, thus reducing the total corticosteroid dose and the risk of systemic side effects. Pulmicort Respules (AstraZeneca), a nebulized formulation, was effective in the treatment of moderate to severe asthma in patients aged > or =12 months.

CONCLUSIONS

Once- or twice-daily administration of budesonide delivered via the Turbuhaler and Pulmicort Respules systems has been shown to be well tolerated and efficacious in populations with moderate to severe asthma.

Nebulized budesonide inhalation suspension compared with cromolyn sodium nebulizer solution for asthma in young children: results of a randomized outcomes trial

OBJECTIVE

The availability of antiinflammatory asthma medications for infants and young children has been limited. The objective of this study was to compare effects of nebulized budesonide inhalation suspension and cromolyn sodium nebulizer solution on asthma-related health outcomes in young children with asthma.

METHODS

We conducted a randomized, parallel-group, 52-week, open-label study in 36 US clinical sites. Patients included 335 children who were 2 to 6 years of age and had persistent asthma that had been treated with at least 1 long-term control medication; 287 children (86%) completed the study. Patients received budesonide inhalation suspension, 0.5 mg daily (n = 168), or cromolyn sodium nebulizer solution, 20 mg 4 times daily (n = 167), for 8 weeks, followed by dose titration at the investigator's discretion. The main outcome measure was the rate of asthma exacerbations over 52 weeks. Secondary measures included times to first asthma exacerbation and first use of additional asthma therapy, asthma symptom scores, rescue medication use, and health care resource use.

RESULTS

The budesonide group had a mean (median) asthma exacerbation rate of 1.23 (0.99) per year compared with 2.41 (1.85) for the cromolyn group, significantly longer times to first exacerbation and first use of additional long-term asthma medication, greater improvements in asthma symptom scores, reduced use of rescue medication, and fewer urgent care visits. Both treatments were well tolerated.

CONCLUSIONS

Budesonide inhalation suspension was more effective than nebulized cromolyn sodium in young children with persistent asthma. Both treatments were well tolerated with similar adverse event profiles.

Budesonide inhalation suspension: a nebulized corticosteroid for persistent asthma

Guidelines for managing asthma in pediatric patients published by the American Academy of Allergy, Asthma, and Immunology and the American Academy of Pediatrics recommend the use of inhaled corticosteroids for the management of persistent asthma in infants and young children. When these guidelines were published, pressurized metered-dose inhalers and dry-powder inhalers were the only delivery devices available for inhaled corticosteroids in the United States. These devices can be difficult for young children to use correctly. Furthermore, no inhaled corticosteroid was approved in the United States for the treatment of children younger than 4 years. Budesonide inhalation suspension (Pulmicort Respules; AstraZeneca LP, Wilmington, Del) was developed to meet the medication delivery needs of infants and young children with persistent asthma. Pulmicort Respules is the first inhaled corticosteroid approved for administration by means of a nebulizer and the only inhaled corticosteroid approved in the United States for infants as young as 12 months. Budesonide has been studied extensively worldwide. In the United States the tolerability and efficacy of budesonide inhalation suspension were confirmed in 3 placebo-controlled multicenter trials. These studies demonstrated that both once- and twice-daily dosing of budesonide inhalation suspension (0.25-1 mg) improved pulmonary function and ameliorated asthma symptoms in infants and young children with persistent asthma. Budesonide inhalation suspension was well tolerated, and the incidences of reported adverse events were similar among patients in the budesonide, placebo, and conventional asthma therapy groups. This article reviews the results of these studies, as well as the pharmacokinetics, pharmacodynamics, and clinical use of budesonide inhalation suspension.

Inhaled mometasone furoate: a review of its use in adults and adolescents with persistent asthma

Mometasone furoate is a corticosteroid with relatively high in vitro potency. Recent randomised, double-blind, multicentre trials have assessed the efficacy of mometasone furoate delivered by dry powder inhaler over 12 weeks in adults and adolescents with mild to severe persistent asthma. Mometasone furoate 200 microg twice daily or 400 microg once daily in the morning or 200 microg once daily in the evening improved lung function, asthma symptom scores and use of rescue medication to a significantly greater extent than placebo in patients who had previously received only short-acting inhaled beta2-adrenoceptor agonists alone as treatment in 3 trials (n = 195 to 306). In studies in 227 to 733 patients with mild to moderate asthma who were receiving ongoing treatment with inhaled corticosteroids prior to enrolment, mometasone furoate 100 to 400 microg twice daily was consistently better at improving the above indicators of asthma than placebo. Mometasone furoate 100 to 200 microg twice daily was as effective as beclomethasone dipropionate 200 microg twice daily or budesonide 400 microg twice daily and mometasone furoate 200 microg twice daily was as effective as fluticasone propionate 250 microg twice daily. Mometasone furoate 400 or 800 microg twice daily was also consistently more effective than placebo in reducing oral corticosteroid dosages and improving lung function and asthma symptoms in 132 patients with oral corticosteroid-dependent asthma. Once daily administration of mometasone furoate 400 microg appears to be as effective at improving indicators of asthma as twice daily administration of 200 microg. Patients receiving mometasone furoate < or =800 microg/day and recipients of placebo experienced a similar overall incidence of adverse events considered to be related to treatment. The most common of these events were oral candidiasis, headache, pharyngitis and dysphonia. Mometasone furoate 100 to 400 microg twice daily, beclomethasone dipropionate 200 microg twice daily, budesonide 400 microg twice daily or fluticasone propionate 250 microg twice daily were similarly tolerated.

CONCLUSION

Inhaled mometasone furoate is well tolerated, with minimal systemic activity and is equally effective when administered as a divided dose or as a single daily dose. Use of the drug can result in a decrease in requirements for oral corticosteroids in patients with oral corticosteroid-dependent asthma and is as effective as other inhaled corticosteroids currently used in the treatment of mild to moderate persistent asthma. Thus mometasone furoate is suitable for the control of mild to severe persistent asthma in adults or adolescents.

Inhaled budesonide/formoterol combination

Current evidence suggests that the addition of the long acting inhaled beta2-agonist formoterol to low or moderate doses of the inhaled corticosteroid budesonide is effective in improving lung function and reducing the incidence of asthma exacerbations. Concurrent use of budesonide with formoterol does not result in any untoward interaction that affects the pharmacodynamic or pharmacokinetic profiles of the individual drugs, or their adverse effect profiles. The administration of combined budesonide/formoterol is effective in improving morning and evening peak expiratory flow rates in adults with persistent asthma. Control of asthma symptoms is also significantly improved. In children aged 4 to 17 years, combined budesonide/formoterol is effective in increasing both morning and evening peak expiratory flow rates and significantly improving forced expiratory volume in 1 second (FEV1). The most commonly encountered adverse effects in clinical trials with combination budesonide/formoterol therapy have been respiratory infection, pharyngitis and coughing. No adverse effects on pulse rate, blood pressure or serum potassium have been reported with combination therapy.