One year prospective open study of the effect of high dose inhaled steroids, fluticasone propionate, and budesonide on bone markers and bone mineral density

Risk and management of osteoporosis due to inhaled, epidural, intra-articular or topical glucocorticoids

Glucocorticoids (GCs) are widely used by several specialties for the treatment of a variety of diseases and conditions. The unfavorable effect of oral GCs on bone health is well-documented. The ensuing from their use glucocorticoid-induced osteoporosis (GIOP) is the most common cause of medication-induced osteoporosis and fractures. It is uncertain, however, if, and in what extent, GCs administered by other routes affect the skeleton. In the present review, we quote current evidence on the effect of inhaled GCs, epidural and intra-articular steroid injections, and topical GCs on bone outcomes. Although evidence is limited and weak, it seems that a small proportion of the administered GCs may be absorbed, enter the systemic circulation, and adversely affect the skeleton. Potent GCs, higher doses, and longer treatment duration seem to infer the greater risk for bone loss and fractures. There are scarce data, and only for inhaled GCs, regarding the efficacy of antiosteoporotic medications in patients receiving GCs through routes other than oral. Further studies are needed to clarify the relationship between GC administration through these routes and bone outcomes and to help establishing guidelines for the optimal management of such patients.

Executive summary: Japanese guidelines for adult asthma (JGL) 2021

Asthma is characterized by chronic airway inflammation, variable airway narrowing, and sensory nerve irritation, which manifest as wheezing, dyspnea, chest tightness, and cough. Longstanding asthma may result in airway remodeling and become intractable. Despite the increased prevalence of asthma in adults, asthma-associated deaths have decreased in Japan (0.94 per 100,000 people in 2020). The goals of asthma treatment include the control of symptoms and reduction of future risks. A functional partnership between physicians and patients is indispensable for achieving these goals. Long-term management with medications and the elimination of triggers and risk factors are fundamental to asthma treatment. Asthma is managed via four steps of pharmacotherapy ("controllers"), ranging from mild to intensive treatments, depending on disease severity; each step involves daily administration of an inhaled corticosteroid, which varies from low to high dosage. Long-acting β₂ agonists, leukotriene receptor antagonists, sustained-release theophylline, and long-acting muscarinic antagonists are recommended as add-on drugs. Allergen immunotherapy is a new option that is employed as a controller treatment. Further, as of 2021, anti-IgE antibody, anti-IL-5 and anti-IL-5 receptor α-chain antibodies, and anti-IL-4 receptor α-chain antibodies are available for the treatment of severe asthma. Bronchial thermoplasty can be performed for asthma treatment, and its long-term efficacy has been reported. Algorithms for their usage have been revised. Comorbidities, such as allergic rhinitis, chronic rhinosinusitis, chronic obstructive pulmonary disease, and aspirin-exacerbated respiratory disease, should also be considered during the treatment of chronic asthma. Depending on the severity of episodes, inhaled short-acting β₂ agonists, systemic corticosteroids, short-acting muscarinic antagonists, oxygen therapy, and other approaches are used as needed ("relievers") during exacerbation.

Possible genetical predictors of efficacy and safety of budesonide-MMX in patients with mild-to-moderate ulcerative colitis, and safety comparison with methylprednisolone

BACKGROUND

Budesonide-MMX is a topically active corticosteroid degraded by cytochrome-P450 enzymes, resulting in favorable side-effect profile. We aimed to assess the effect of CYP genotypes on safety and efficacy, and make a direct comparison with systemic corticosteroids.

RESEARCH DESIGN AND METHODS

We enrolled UC patients receiving budesonide-MMX and IBD patients on methylprednisolone in our prospective, observational-cohort study. Before and after treatment regimen clinical activity indexes, laboratory parameters (electrolytes, CRP, cholesterol, triglyceride, dehydroepiandrosterone, cortisol, beta-crosslaps, osteocalcin), and body composition measurements were assessed. CYP3A4 and CYP3A5 genotypes were determined in the budesonide-MMX group.

RESULTS

71 participants were enrolled (budesonide-MMX: 52; methylprednisolone: 19). CAI decreased (p<0.05) in both groups. Cortisol decreased (p<0.001), and the level of cholesterol was elevated in both groups (p<0.001). Body composition altered only following methylprednisolone. Bone homeostasis (osteocalcin; p<0.05) and DHEA (p<0.001) changed more prominently after methylprednisolone. Glucocorticoid-related adverse events were more common following methylprednisolone treatment (47.4% compared to 1.9%). CYP3A5(*1/*3) genotype positively influenced efficacy, but not safety. Only one patient's CYP3A4 genotype differed.

CONCLUSIONS

CYP genotypes can affect the efficacy of budesonide-MMX; however, further studies would be needed with analyses of gene expression. Although budesonide-MMX is safer than methylprednisolone, due to glucocorticoid-related side effects, admission should require greater precaution.

Japanese guidelines for adult asthma 2020

Bronchial asthma is characterized by chronic airway inflammation, which manifests clinically as variable airway narrowing (wheezes and dyspnea) and cough. Long-standing asthma may induce airway remodeling and become intractable. The prevalence of asthma has increased; however, the number of patients who die from it has decreased (1.3 per 100,000 patients in 2018). The goal of asthma treatment is to control symptoms and prevent future risks. A good partnership between physicians and patients is indispensable for effective treatment. Long-term management with therapeutic agents and the elimination of the triggers and risk factors of asthma are fundamental to its treatment. Asthma is managed by four steps of pharmacotherapy, ranging from mild to intensive treatments, depending on the severity of disease; each step includes an appropriate daily dose of an inhaled corticosteroid, which may vary from low to high. Long-acting β₂-agonists, leukotriene receptor antagonists, sustained-release theophylline, and long-acting muscarinic antagonists are recommended as add-on drugs, while anti-immunoglobulin E antibodies and other biologics, and oral steroids are reserved for very severe and persistent asthma related to allergic reactions. Bronchial thermoplasty has recently been developed for severe, persistent asthma, but its long-term efficacy is not known. Inhaled β₂-agonists, aminophylline, corticosteroids, adrenaline, oxygen therapy, and other approaches are used as needed during acute exacerbations, by selecting treatment steps for asthma based on the severity of the exacerbations. Allergic rhinitis, eosinophilic chronic rhinosinusitis, eosinophilic otitis, chronic obstructive pulmonary disease, aspirin-exacerbated respiratory disease, and pregnancy are also important conditions to be considered in asthma therapy.

Benefit:Risk Profile of Budesonide in Obstructive Airways Disease

Airway inflammation is a major contributing factor in both asthma and chronic obstructive pulmonary disease (COPD) and represents an important target for treatment. Inhaled corticosteroids (ICS) as monotherapy or in combination therapy with long-acting β₂-agonists or long-acting muscarinic antagonists are used extensively in the treatment of asthma and COPD. The development of ICS for their anti-inflammatory properties progressed through efforts to increase topical potency and minimise systemic potency and through advances in inhaled delivery technology. Budesonide is a potent, non-halogenated ICS that was developed in the early 1970s and is now one of the most widely used lung medicines worldwide. Inhaled budesonide's physiochemical and pharmacokinetic/pharmacodynamic properties allow it to reach a rapid and high airway efficacy due to its more balanced relationship between water solubility and lipophilicity. When absorbed from the airways and lung tissue, its moderate lipophilicity shortens systemic exposure, and its unique property of intracellular esterification acts like a sustained release mechanism within airway tissues, contributing to its airway selectivity and a low risk of adverse events. There is a large volume of clinical evidence supporting the efficacy and safety of budesonide, both alone and in combination with the fast- and long-acting β₂-agonist formoterol, as maintenance therapy in patients with asthma and with COPD. The combination of budesonide/formoterol can also be used as an as-needed reliever with anti-inflammatory properties, with or without regular maintenance for asthma, a novel approach that is already approved by some country-specific regulatory authorities and currently recommended in the Global Initiative for Asthma (GINA) guidelines. Budesonide remains one of the most well-established and versatile of the inhaled anti-inflammatory drugs. This narrative review provides a clinical reappraisal of the benefit:risk profile of budesonide in the management of asthma and COPD.

Abnormal microarchitecture and stiffness in postmenopausal women using chronic inhaled glucocorticoids

Postmenopausal (PM) women using inhaled glucocorticoids (IGCs) had substantial abnormalities in volumetric BMD (vBMD), microarchitecture, and stiffness using high resolution peripheral computed tomography (HRpQCT) compared to age- and race-matched controls. Abnormalities were most severe at the radius. These preliminary results suggest that there may be major, heretofore unrecognized, skeletal deficits in PM women using IGCs.

INTRODUCTION

While oral glucocorticoids are well recognized to have destructive skeletal effects, less is known about the effects of IGCs. The detrimental skeletal effects of IGCs may be greatest in PM women, in whom they compound negative effects of estrogen loss and aging. The goal of this study was to evaluate microarchitecture and stiffness in PM women using chronic IGCs.

METHODS

This case-control study compared PM women using IGCs for ≥ 6 months (n = 20) and controls matched for age and race/ethnicity (n = 60). Skeletal parameters assessed included areal BMD (aBMD) by DXA, trabecular and cortical vBMD and microarchitecture by HRpQCT of the radius and tibia, and whole bone stiffness by finite element analysis.

RESULTS

By DXA, mean values in both groups were in the osteopenic range; hip aBMD was lower in IGC users (P < 0.04). By HRpQCT, IGC users had lower total, cortical, and trabecular vBMD at both radius and tibia (all P < 0.05). IGC users had lower cortical thickness, lower trabecular number, greater trabecular separation and heterogeneity at the radius (all P < 0.03), and greater heterogeneity at the tibia (P < 0.04). Whole bone stiffness was lower in IGC users at radius (P < 0.03) and tended to be lower at the tibia (P = 0.09).

CONCLUSIONS

PM women using IGCs had substantial abnormalities in vBMD, microarchitecture, and stiffness compared to controls. These abnormalities were most severe at the radius. These preliminary results suggest that there may be major, heretofore unrecognized, skeletal deficits in PM women using IGCs.

Efficacy and safety of inhaled corticosteroids relative to fluticasone propionate: a systematic review of randomized controlled trials in asthma

INTRODUCTION

Many trials have been published comparing inhaled corticosteroid (ICS) treatments in asthma. However, mixed results necessitate the summarization of available evidence to aid in decision-making. Areas covered: This systematic review evaluated randomized controlled trials (RCTs) that compared the efficacy and safety of inhaled fluticasone propionate (FP) with other ICS including beclomethasone dipropionate (BDP), budesonide (BUD) and ciclesonide (CIC). PubMed was searched and 54 RCTs that fit pre-determined criteria were included. Endpoints evaluated included lung function, asthma symptom control, exacerbation frequency, reliever use, quality of life and steroid-related side effects. Expert commentary: Across all studies, FP was associated with either more favorable or at least similar efficacy and safety, in comparison with BDP or BUD. This observation may be related to FP's higher relative potency and almost negligible oral bioavailability. FP was comparable to CIC for efficacy. However, CIC appeared to have a smaller impact on cortisol levels than FP, which is likely due to CIC's incomplete conversion to active metabolite (des-CIC) and the lower potency of des-CIC compared with FP. Although there were no significant differences in evaluated outcomes after treatment with different ICS in the majority of studies, some observed differences could be explained by their respective pharmacodynamic and pharmacokinetic properties.

Intranasal Steroid Use for Otitis Media with Effusion: Ongoing Opportunities for Quality Improvement

Objectives Our objectives were (1) to assess patterns of intranasal steroid administration when otitis media with effusion (OME) has been diagnosed in children, (2) to investigate whether usage varies according to visit setting, and (3) to determine if practice gaps are such that quality improvement could be tracked. Study Design Cross-sectional analysis of an administrative database. Subjects and Methods National Ambulatory and Hospital Ambulatory Medical Care Surveys, 2005 to 2012; univariate, multivariate, and stratified analyses of intranasal steroid usage were performed. The primary outcome was intranasal steroid administration, and the primary predictor was a diagnosis of OME. The impact of location of service was also analyzed. Results Data representing 1,943,177,903 visits demonstrated that intranasal steroids were administered in 10.0% of visits in which OME was diagnosed, in comparison to 3.5% of visits in which OME was not diagnosed (univariate odds ratio, 3.07; 95% confidence interval [CI], 1.85-5.08; P < .001). After adjusting for age, sex, race/ethnicity, and other confounding conditions, multivariate analysis demonstrated that OME remained associated with an increase in intranasal steroid usage (odds ratio, 3.58; 95% CI, 1.60-8.01; P = .002). This practice pattern was more prevalent in the ambulatory office setting (risk difference 6.6%, P < .001) and less seen in a hospital-based office or emergency department. Conclusion Despite randomized controlled trials showing a lack of efficacy for isolated OME, nasal steroids continue to be used in treating children with OME in the United States. Related quality improvement opportunities to prevent usage of an ineffective treatment exist.

Adverse Effects of Nonsystemic Steroids (Inhaled, Intranasal, and Cutaneous): a Review of the Literature and Suggested Monitoring Tool

Inhaled, intranasal, and cutaneous steroids are prescribed by physicians for a plethora of disease processes including asthma and rhinitis. While the high efficacy of this class of medication is well known, the wide range of adverse effects, both local and systemic, is not well elucidated. It is imperative to monitor total steroid burden in its varied forms as well as tracking for possible side effects that may be caused by a high cumulative dose of steroids. This review article highlights the adverse effects of different steroid modalities as well as suggests a monitoring tool to determine steroid totality and side effects.

Comparison of fluticasone propionate with budesonide administered via nebulizer: a randomized controlled trial in patients with severe persistent asthma

BACKGROUND

This study compared the efficacy and safety of fluticasone propionate (FP) inhalation n solution with budesonide (BUD) suspension for inhalation administered via nebulizer, in Chinese adult patients with severe, persistent asthma.

METHODS

This was a multicenter, randomized, active-controlled, single-blind, parallel-group study, conducted at 26 clinical sites in China. Participants were randomized 1:1 to FP nebules 1 mg twice daily or BUD 2 mg twice daily via nebulizer for 12 weeks.

RESULTS

A total of 317 adult patients were randomized. The primary endpoint was mean change in morning peak expiratory flow (PEF) over weeks 1-12 from baseline, and analyzed in the ITT (n=315) and PP populations (n=283). Week 12 PEF increase from baseline was 26.7 L/min (14.1%) and 28.0 L/min (15.3%) in the ITT population, and 29.1 L/min (15.7%) and 30.1 L/min (16.2%) in the PP population, in the FP and BUD groups, respectively; all improvements were of clinical significance. Lower limits of the two-sided 95% CIs for the least squares (LS) mean treatment difference (FP minus BUD) were -12.19 L/min (ITT) and -12.95 L/min (PP), both above the pre-specified non-inferiority criteria -12.00 L/min and not clinically meaningful. There was no significant difference in the week 12 mean FEV₁ increase between the FP and BUD groups (0.237 L/16.79% vs. 0.236 L/17.73%). Lower limits of the 95% CIs for LS mean treatment difference in morning PEF change from baseline over weeks 1-4 in a post hoc analysis were -10.41 and -11.96 L/min in the ITT and PP populations respectively; both above -12.00 L/min. A review of safety data indicated that rates of AEs, SAEs, and drug-related AEs were similar between two groups.

CONCLUSIONS

The 12-week treatment of FP inhalation solution administered via nebulizer is safe and effectively for treating severe, persistent asthma in Chinese patients over 12 week.

The effect of inhaled corticosteroids on bone mineral density measured by quantitative ultrasonography in an older population

INTRODUCTION

Prolonged use of systemic corticosteroids leads to reduced bone mineral density and osteoporosis, in turn increasing the risk of minimal trauma fractures with their associated morbidity and mortality in elderly populations. However, the effect of inhaled corticosteroids on bone mineral density has been debated in the medical literature.

OBJECTIVES

We aimed to determine the effect of inhaled corticosteroids on bone mineral density measured using calcaneal quantitative ultrasonography in a cohort of older Australians.

METHODS

Data was collected from the Hunter Community Study, a longitudinal cohort of Australians aged 55-85. Simple and multiple linear regression methods were used to test the cross-sectional association between inhaled corticosteroids and calcaneal bone mineral density measured with quantitative ultrasound at baseline. A causal diagram was used to determine the minimally sufficient number of co-variates necessary to determine the unconfounded effect of inhaled corticosteroids on bone mineral density; these included gender, body mass index, smoking, asthma, alcohol use, age, physical activity, and diet.

RESULTS

There were 152 (6.8%) patients on inhaled corticosteroids and 2098 (93%) controls. Simple and multiple linear regression methods showed a non-significant effect of inhaled steroids on BMD with slight decrease of BMD -0.010 g/cm² (95% CI -0.042 to 0.022, P = .55) and -0.013 g/cm² (95% CI -0.062 to 0.036, P = .61) respectively. Age, gender, body mass index, and smoking were stronger predictors of BMD.

CONCLUSIONS

No statistically significant relationship was detected between the use of inhaled corticosteroids and reduced bone mineral density in this observational study of a cohort of older Australians.

The Skeletal Effects of Inhaled Glucocorticoids

The skeletal effects of inhaled glucocorticoids are poorly understood. Children with asthma treated with inhaled glucocorticoids have lower growth velocity, bone density, and adult height. Studies of adults with asthma have reported variable effects on BMD, although prospective studies have demonstrated bone loss after initiation of inhaled glucocorticoids in premenopausal women. There is a dose-response relationship between inhaled glucocorticoids and fracture risk in asthmatics; the risk of vertebral and non-vertebral fractures is greater in subjects treated with the highest doses in the majority of studies. Patients with COPD have lower BMD and higher fracture rates compared to controls, however, the majority of studies have not found an additional detrimental effect of inhaled glucocorticoids on bone. While the evidence is not conclusive, it supports using the lowest possible dose of inhaled glucocorticoids to treat patients with asthma and COPD and highlights the need for further research on this topic.

Effects of mometasone, fluticasone, and montelukast on bone mineral density in adults with asthma

BACKGROUND

Associations of inhaled corticosteroids (ICS) with bone mineral density (BMD) loss have not been characterized consistently.

OBJECTIVE

This randomized, double-blind study assessed effects of mometasone furoate (MF) administered via dry powder inhaler on BMD of patients with persistent asthma.

METHODS

Adults with mild-moderate persistent asthma who did not receive ICS for ≥3 months were randomized to MF 400 μg once daily (QD) in the evening (pm), MF 200 μg QD pm, montelukast sodium (ML) 10 mg QD pm, or fluticasone propionate (FP) 250 μg twice daily. Included patients had 25-hydroxy vitamin D levels ≥15 ng/mL at baseline. All the patients received calcium and vitamin D supplements for daily use during the trial. Duplicate BMD scans were done at baseline, 6 months, and 1 year. The mean percentage change in lumbar spine (LS) BMD from baseline to end point for MF 400 μg versus ML 10 mg was the primary analysis. Changes from baseline in left total femur BMD and femoral neck BMD were secondary assessments.

RESULTS

At the end point, mean LS BMD increased 0.9% (MF 400 μg), 1.2% (ML), 0.7% (MF 200 μg), and 1.1% (FP), with no significant differences for MF 400 μg versus ML (-0.3% [95% CI, -1.01 to 0.27]) for LS BMD. No significant differences among treatments occurred for changes in left total femur BMD; all were slight increases. Changes in femoral neck BMD were 0.4% (MF 400 μg), -0.2% (ML), -0.2% (MF 200 μg), and -0.4% (FP); only the difference between MF 400 μg and FP was statistically significant (P = .044).

CONCLUSION

No detrimental effects on lumbar BMD were observed after up to 1 year of treatment with MF in comparison with ML for patients who received calcium and vitamin D supplements.

Bone mineral density in asthmatic patients on inhaled corticosteroids in a developing country

INTRODUCTION:

Prolonged use of oral corticosteroids is a risk factor for osteoporosis. However, the effect of inhaled corticosteroids (ICS) on bone mineral density (BMD) of asthmatic patients remains controversial.

OBJECTIVES:

We aimed to determine the prevalence of osteopenia and osteoporosis in our patients with asthma receiving ICSs for more than one year compared with patients who did not have asthma and to determine the risk factors for osteopenia and osteoporosis among the asthmatic patients.

METHODS:

This was a cross-sectional study conducted from August 2007 to July 2009. Asthmatic patients aged 18 years and older who had been on ICS for at least one year and a control group of subjects not on ICS were included. BMD was measured using DEXA (dual energy X-ray absorptiometry) scan. The WHO classification of T-scores for osteopenia and osteoporosis were used.

RESULTS:

A total of 143 subjects were recruited (69 asthmatics and 74 control subjects). T-scores of the spine, femur, and hip of the asthmatics vs the control subjects were mean, −0.72 vs −0.57 (P=0.98); median, −0.60 vs −0.80 (P=0.474); and mean, 0.19 vs 0.06 (P=0.275); respectively. T-scores of the spine, femur, and hip showed significant negative correlation with age and significant positive correlation with body mass index (BMI).

CONCLUSION:

The risk factors for osteoporosis and osteopenia among asthmatic patients were older age and lower BMI, but not the cumulative dose of ICS. Asthmatic patients on ICS have no added risk of osteoporosis or osteopenia as compared with non-asthmatic subjects.

Prospective follow-up of novel markers of bone turnover in persistent asthmatics exposed to low and high doses of inhaled ciclesonide over 12 months

CONTEXT

In asthmatic patients receiving long-term inhaled corticosteroid therapy, there are concerns regarding the potential for developing systemic adverse effects on bone metabolism, possibly even in the absence of adrenal suppression.

OBJECTIVE

The aim of this study was to investigate whether exposure to inhaled ciclesonide at high vs. low doses over 1 yr causes any significant systemic adverse effect on sensitive biomarkers of bone turnover in asthmatic patients.

DESIGN

Post hoc analysis of stored samples was performed in a subgroup of patients from a prospective, randomized parallel group trial with 1 yr follow-up.

SETTING

We conducted a primary care study in Tayside, Scotland.

PARTICIPANTS

A total of 164 mild-moderate persistent asthmatics aged 18-65 yr with evidence of airway hyperresponsiveness using mannitol bronchial challenge were enrolled into the original study. Of the 119 completed patients per protocol, 100 participants had bone marker samples available for analysis.

INTERVENTIONS

Ciclesonide was titrated to control persistent asthma against either mannitol bronchial challenge [airway hyperresponsiveness (AHR) strategy] or a control group (based on symptoms, reliever use, and pulmonary function) over 1 yr.

OUTCOME MEASURES

We measured markers of bone formation [amino-terminal propeptide of type I collagen (PINP), amino-terminal propeptide of type III collagen (PIIINP)], resorption [carboxy-terminal telopeptide of type I collagen (ICTP), type I collagen cross-linked C-telopeptide (CTx)], and adrenal suppression (overnight urinary cortisol/creatinine ratio) at 0 and 12 months.

RESULTS

Mean ciclesonide doses after 12 months were: AHR, 507 μg/d (n = 50); and controls, 202 μg/d (n = 50) (P < 0.00001). There were no significant differences between AHR and control groups either at baseline or after 12 months in PINP, PIIINP, ICTP, or CTx; or in ratios of bone turnover as PINP/ICTP, PIIINP/CTx, or overnight urinary cortisol/creatinine ratio.

CONCLUSION

Higher doses of inhaled ciclesonide do not adversely affect sensitive markers of bone turnover in persistent asthmatics over 12 months.

Assessment of bone status in inhaled corticosteroid user asthmatic patients with an ultrasound measurement method

BACKGROUND

The effect of inhaled corticosteroid (ICS) on the bone status of asthmatic patients is still uncertain, because it can differ by race and because there have been few cases in Japan. In this study, the bone status of ICS users with asthma was evaluated in an actual clinical setting in Japan.

METHODS

In 7 participating hospitals, ICS users with asthma and control subjects were age- and gender-matched and recruited into this study. To assess bone status, ultrasound measurements of each individual's calcaneus were made using an AOS-100. The ratio of the osteo sono-assessment index (OSI) to the average OSI corrected for age and gender was denoted as %OSI and used for quantitative assessment. The second %OSI measurement was performed 6 months after the first %OSI one. During the study period, individual treatment remained unchanged.

RESULTS

There were no significant differences in the 1st and 2nd %OSI between the ICS users and control subjects. However, the 2nd %OSI significantly decreased compared with 1st %OSI in female ICS users, although there were no significant changes in the male and female control subjects and male ICS users.

CONCLUSIONS

The 6 month management of asthma in the actual clinical setting, including regular ICS use, might have a harmful influence on the bone status of female asthmatic patients. It may be necessary to manage and treat female patients for potent corticosteroid-induced osteoporosis, although further analyses of bone status in asthma patient ICS users will be required.

Allergy and the bone: unexpected relationships

OBJECTIVE

To examine the relationships between allergy and bone metabolism as represented by the effects of antihistamines and leukotriene modifiers on bone resorption and formation.

DATA SOURCES

The major databases MEDLINE and Scopus were searched using the keywords bone metabolism, bone resorption, bone formation, antihistamines, h1 antagonist, leukotriene antagonist, and leukotriene modifier.

STUDY SELECTION

The studies were independently evaluated by all the coauthors, who judged their pertinence to this review.

RESULTS

Two of the most intriguing aspects in the field are the possible effects of leukotriene modifiers on fracture repair and the hypothesized role of antihistamines in contrasting osteoporosis. Another rapidly expanding field of research is that related to the immune-modulating effects of vitamin D because serum levels of vitamin D have been shown to correlate with pulmonary function, asthma onset, and the development of allergic diseases.

CONCLUSION

Although unexpected, data are now available suggesting a strict connection among allergy, its treatments, and bone metabolism.

Patient-reported outcomes in clinical trials of inhaled asthma medications: systematic review and research needs

PURPOSE

To assess the diversity, application, analysis and interpretation of patient-reported outcomes (PROs) in asthma clinical trials.

METHODS

We critically appraised the use of asthma-specific PROs in 87 randomised controlled trials (RCTs) of inhaled asthma medications published during 1985-2006.

RESULTS

A total of 79 RCTs reported PROs, of which 78 (99%) assessed symptom scores and seven (9%) assessed asthma quality of life scores. Only eight (10%) used validated instruments and five (6%) provided clinical interpretation of scores. Due to heterogeneity in the reporting of symptom measures, it is not possible to determine how many discrete symptom assessment instruments have been used. Only 26 (33%) of the RCTs that measured symptom scores reported the scores for follow-up. Limited improvement occurred over time: fewer than 30% of the RCTs used validated PRO measures in any individual year.

CONCLUSION

Numerous validated PRO instruments are available but it is unclear why few are used in asthma clinical trials. Problems include poor reporting, and uncritical analysis and interpretation of PRO scores. Research needs include identifying and recommending a set of PROs for use in asthma clinical research and providing guidance for researchers on the application, analysis and interpretation of PRO measures in clinical trials.

Effect of long-term corticosteroid use on bone mineral density in children: a prospective longitudinal assessment in the childhood Asthma Management Program (CAMP) study

OBJECTIVE

Systemic corticosteroids are known to induce osteoporosis and increase the risk for fractures in adults and children. Inhaled corticosteroids have been shown to increase the risk for osteoporosis and fractures in adults at risk; however, long-term prospective studies of children to assess risks of multiple short courses of oral corticosteroids and chronic inhaled corticosteroids have not been performed. Thus, we assessed the effects of multiple short courses of oral corticosteroids and long-term inhaled corticosteroids on bone mineral accretion over a period of years.

METHODS

This was a cohort follow-up study for a median of 7 years of children who had mild-to-moderate asthma and initially were randomly assigned into the Childhood Asthma Management Program trial. Serial dual-energy radiograph absorptiometry scans of the lumbar spine for bone mineral density were performed for all patients. Annual bone mineral accretion was calculated for 531 boys and 346 girls who had asthma and were aged 5 to 12 years at baseline (84% of the initial cohort).

RESULTS

Oral corticosteroid bursts produced a dosage-dependent reduction in bone mineral accretion (0.052, 0.049, and 0.046 g/cm(2) per year) and an increase in risk for osteopenia (10%, 14%, and 21%) for 0, 1 to 4, and >or=5 courses, respectively, in boys but not girls. Cumulative inhaled corticosteroid use was associated with a small decrease in bone mineral accretion in boys but not girls but no increased risk for osteopenia.

CONCLUSIONS

Multiple oral corticosteroid bursts over a period of years can produce a dosage-dependent reduction in bone mineral accretion and increased risk for osteopenia in children with asthma. Inhaled corticosteroid use has the potential for reducing bone mineral accretion in male children progressing through puberty, but this risk is likely to be outweighed by the ability to reduce the amount of oral corticosteroids used in these children.

[Inhaled corticosteroid therapy and bone metabolism in asthmatic children]

OBJECTIVE

To explore the association between inhaled corticosteroids (ICS) therapy and bone metabolism.

PATIENTS AND METHODS

The sample was composed of 151 children, aged between 1 and 17 years. There were 71 asthmatics treated with ICS for at least 6 months (group 1), 44 asthmatics treated occasionally with ICS during exacerbations (group 2), and 36 healthy children (group 3). Bone mineral density (BMD) and markers of bone formation and resorption were measured. These measures, as well as other related factors, were compared among groups. Regression models for osteopenia and BMD were used with the group as the independent variable adjusted by factors with differences between groups. A two-tailed level of p < 0.05 was used in all tests.

RESULTS

No differences in BMD were found between groups 1 and 2 but significant differences were found between groups 1 and 3 (p = 0.003). No differences were found in markers of bone formation and resorption among the groups. No association was found between BMD and the type, daily dose or accumulated dose of ICS. Group 1 showed an osteopenia odds ratio relative to group 3 of 2.94 (95 % CI: 1.49-5.78) and an average reduction of BMD of 0.50 (95 % CI: 0.32-0.68) was found from group 3 to 2 and from group 2 to 1. In group 1, markers of bone resorption significantly increased in asthmatics with osteopenia compared with those without osteopenia.

CONCLUSIONS

ICS treatment in asthmatic children seems to affect BMD. Markers of bone formation and resorption are unaffected. Osteopenia in these children could also be related to other factors that increase bone resorption.

Fluticasone versus beclomethasone or budesonide for chronic asthma in adults and children

BACKGROUND

Beclomethasone dipropionate (BDP) and budesonide (BUD) are commonly prescribed inhaled corticosteroids for the treatment of asthma. Fluticasone propionate (FP) is newer agent with greater potency in in-vitro assays.

OBJECTIVES

To compare the efficacy and safety of Fluticasone to Beclomethasone or Budesonide in the treatment of chronic asthma.

SEARCH STRATEGY

We searched the Cochrane Airways Group trial register (January 2007) and reference lists of articles. We contacted trialists and pharmaceutical companies for additional studies and searched abstracts of major respiratory society meetings (1997 to 2006).

SELECTION CRITERIA

Randomised trials in children and adults comparing Fluticasone to either Beclomethasone or Budesonide in the treatment of chronic asthma.

DATA COLLECTION AND ANALYSIS

Two reviewers independently assessed articles for inclusion and methodological quality. One reviewer extracted data. Quantitative analyses were undertaken using RevMan analyses 1.0.1.

MAIN RESULTS

Seventy-one studies (14,602 participants) representing 74 randomised comparisons met the inclusion criteria. Methodological quality was fair. Dose ratio 1:2: FP produced a significantly greater end of treatment FEV1 (0.04 litres (95% CI 0 to 0.07 litres), end of treatment and change in morning PEF, but not change in FEV1 or evening PEF. This applied to all drug doses, age groups, and delivery devices. No difference between FP and BDP/BUD were seen for trial withdrawals. FP led to fewer symptoms and less rescue medication use. When given at half the dose of BDP/BUD, FP led to a greater likelihood of pharyngitis. There was no difference in the likelihood of oral candidiasis. Plasma cortisol and 24 hour urinary cortisol was measured frequently but data presentation was limited. Dose ratio 1:1: FP produced a statistically significant difference in morning PEF, evening PEF, and FEV1 over BDP or BUD. The effects on exacerbations were mixed. There were no significant differences incidence of hoarseness, pharyngitis, candidiasis, or cough.

AUTHORS' CONCLUSIONS

Fluticasone given at half the daily dose of beclomethasone or budesonide leads to small improvements in measures of airway calibre, but it appears to have a higher risk of causing sore throat and when given at the same daily dose leads to increased hoarseness. There are concerns about adrenal suppression with Fluticasone given to children at doses greater than 400 mcg/day, but the randomised trials included in this review did not provide sufficient data to address this issue.

Calcitriol does not prevent bone loss in patients with asthma receiving corticosteroid therapy: a double-blind placebo-controlled trial

INTRODUCTION

Oral glucocorticoid therapy reduces bone mineral density (BMD) and increases fracture risk. It is uncertain whether inhaled glucocorticoids, the most commonly used long-term therapy for asthma, have a similar effect. If bone loss does occur, it is unclear whether this is preventable by calcitriol. Patients with asthma receiving inhalational plus intermittent oral glucocorticoids lose bone, and treatment with 0.5 microg/day of calcitriol will prevent bone loss.

METHODS

A 2-year randomized double-blind placebo-controlled trial. One hundred eight patients with asthma were stratified by gender, age, and inhaled glucocorticoid dose and treated with calcitriol (n=55) or placebo (n=53). There were 41 men (mean age 53.2+/-1.7 years) and 67 women (mean age 49.1+/-1 years) with moderate to severe asthma (requiring >/=800 microg/day of beclomethasone dipropionate or equivalent maintenance therapy). BMD values at the lumbar spine (LS) and femoral neck (FN) were measured at baseline and at 6, 12, and 24 months using dual x-ray absorptiometry.

RESULTS

Changes in LS and FN BMD. Bone loss occurred in both groups at the FN (both p<0.03) and at the LS in the calcitriol (p<0.001), but not the control, group. Bone loss was not less in the calcitriol group at either site.

CONCLUSION

Patients with asthma receiving inhalational plus intermittent short courses of oral glucocorticoids lose bone. Calcitriol is unlikely to be appropriate therapy against this bone loss.

Safety of inhaled corticosteroids in the treatment of persistent asthma

OBJECTIVE

Inhaled corticosteroids (ICSs) are the most effective medications available for patients with persistent asthma of all severities and currently are recommended as the preferred asthma controller therapy by the National Heart, Lung and Blood Institute. Nevertheless, lingering concerns about potential adverse systemic effects of ICSs contribute to their underuse. This review discusses the safety of ICSs with respect to potential systemic effects of most concern to physicians and patients.

METHODS

Articles reporting on the safety of ICSs in children and adults with persistent asthma were identified from the Medline database from January 1966 through December 2003, reference lists of review articles and international respiratory meetings.

RESULTS

Ocular effects of ICSs and ICS effects on bone mineral density and adrenal function are minimal in patients maintained on recommended ICS doses. One-year growth studies in children have shown decreased growth velocity with ICSs, but long-term studies with inhaled budesonide and beclomethasone show no effect on final adult height, suggesting that these effects are transient. In addition, extensive data from the Swedish Medical Birth Registry show no increased risk of adverse perinatal outcomes when inhaled budesonide is administered to pregnant women with asthma.

CONCLUSIONS

ICSs have minimal systemic effects in most patients when taken at recommended doses. The benefits of ICS therapy clearly outweigh the risks of uncontrolled asthma, and ICSs should be prescribed routinely as first-line therapy for children and adults with persistent disease.

Cost-effectiveness of inhaled steroids in asthma: impact of effect on bone mineral density

BACKGROUND

The effects of inhaled corticosteroid (ICS) preparations on bone health have been debated. Multiple analyses have been published examining the question, with mixed results.

OBJECTIVES

We examined how assumptions about the effect of ICS on bone mineral density (BMD) influence the cost-effectiveness of ICS in asthma.

METHODS

We developed a mathematical simulation model to estimate clinical outcomes and costs for a cohort with mild/moderate asthma. The analysis conformed to reference case recommendations of the US Panel on Cost-Effectiveness in Health and Medicine. Sensitivity analysis evaluated the stability of our results to uncertainty in treatment duration, age at treatment, and ICS dose.

RESULTS

Assuming a dose of 200 microg twice per day of ICS, a literature-based average effect of ICS on BMD and a 10-year time horizon, we observed a minimal increase in the costs attributed to hip fracture and incremental cost effectiveness ratio of $26,000 per quality-adjusted life-year and $14.00 per symptom-free day gained. Over an extended the time horizon (lifetime), the incremental cost effectiveness ratio increased to $42,000/quality-adjusted life-year. Only under a scenario of high-dose ICS, a lifetime horizon, and a large effect of ICS on BMD did the potential impact of ICS on BMD dramatically affect the economic attractiveness of therapy.

CONCLUSION

To minimize any potential impact, use of the lowest effective dose of ICS and measures to target and intervene in high-risk individuals are warranted. However, ICS therapy in mild/moderate asthma compares favorably with commonly accepted interventions over a wide range of assumptions regarding this treatment and its effects on BMD.

Inhaled fluticasone versus inhaled beclomethasone or inhaled budesonide for chronic asthma in adults and children

BACKGROUND

Beclomethasone dipropionate (BDP) and budesonide (BUD) are commonly prescribed inhaled corticosteroids for the treatment of asthma. Fluticasone propionate (FP) is newer agent with greater potency in in-vitro assays.

OBJECTIVES

To compare the efficacy and safety of Fluticasone to Beclomethasone or Budesonide in the treatment of chronic asthma.

SEARCH STRATEGY

We searched the Cochrane Airways Group trial register (January 2004) and reference lists of articles. We contacted trialists and pharmaceutical companies for additional studies and searched abstracts of major respiratory society meetings (1997 to 2003).

SELECTION CRITERIA

Randomised trials in children and adults comparing Fluticasone to either Beclomethasone or Budesonide in the treatment of chronic asthma.

DATA COLLECTION AND ANALYSIS

Two reviewers independently assessed articles for inclusion and methodological quality. One reviewer extracted data. Quantitative analyses were undertaken using RevMan analyses 1.0.1.

MAIN RESULTS

Fifty six studies (12, 119 participants) met the inclusion criteria. Methodological quality was variable. Dose ratio 1:2: FP produced a significantly greater FEV1 (0.14 litres, 95% Confidence Interval (CI) 0.06 to 0.22), morning PEF (11.10 L/min, 95%CI 3.12 to 19.09 L/min) and evening PEF (9.31 L/min, 95%CI 5.12 to 13.5 L/min). This applied to all drug doses, age groups, and delivery devices. No difference between FP and BDP/BUD were seen for trial withdrawals. Symptoms and rescue medication use were widely reported but few trials provided sufficient data for analysis. When given at half the dose of BDP/BUD, FP led to a greater likelihood of pharyngitis. There was no difference in the likelihood of oral candidiasis. Plasma cortisol and 24 hour urinary cortisol was measured frequently but data presentation was limited. Dose ratio 1:1: FP produced a statistically significant difference in am PEF (9.58 L/min (95% CI 5.20 to 13.97)), pm PEF (7.41 L/min (95% CI 2.61 to 12.22)), and FEV1 (0.09 L (0.02 to 0.17)). The effects on exacerbations were mixed. There was an increase in the incidence of hoarseness, but no significant difference in pharyngitis, candidiasis, or cough.

AUTHORS' CONCLUSIONS

Fluticasone given at half the daily dose of beclomethasone or budesonide leads to small improvements in measures of airway calibre, but it appears to have a higher risk of causing hoarseness when given at the same daily dose. Future studies should attempt to establish the relative efficacy of inhaled steroids delivered with CFC-free propellants.

The risk of nonvertebral fracture related to inhaled corticosteroid exposure among adults with chronic respiratory disease

OBJECTIVE

To examine nonvertebral fracture risk in relation to inhaled corticosteroid (ICS) exposure among adults with respiratory disease.

DESIGN AND PATIENTS

Nested case-control study within a cohort of 89,877 UnitedHealthcare members aged > or = 40 years with physician insurance claims for COPD or asthma, enrolled for > or = 1 year from January 1, 1997 to June 30, 2001.

METHODS

Cases (n = 1,722) represented patients with a first treated nonvertebral fracture (the index date is the first fracture claim). Control subjects (n = 17,220) were randomly selected from the person-time and assigned a random index date. ICS exposure was ascertained 1 month, 3 months, 6 months, and 12 months before the index date, with estimated cumulative dose through 0 to 6 months, 7 to 12 months, and 0 to 12 months. Covariates included demographics, oral corticosteroid and other medication exposure, comorbidities, and indicators of respiratory disease severity. Odds ratios (ORs) adjusted for all covariates were estimated by logistic regression.

RESULTS

No increased fracture risk with ICS exposure as a class or with fluticasone propionate alone was detected. ORs for exposure in the preceding 30 days were 1.05 (95% confidence interval [CI], 0.89 to 1.24), 1.13 (95% CI, 0.90 to 1.40), and 0.97 (95% CI, 0.78 to 1.21) for all ICS, fluticasone propionate, and other ICS, respectively. No dose-response effect was present. Among patients with COPD only (n = 6,932), no increased risk was found for recent ICS exposure (OR, 0.86; 95% CI, 0.59 to 1.25).

CONCLUSIONS

Concern about nonvertebral fracture risk should not strongly influence the decision to use recommended doses of ICS for adult patients with asthma or COPD in managed-care settings in the United States. This study could not evaluate very-high ICS dose, long-term ICS exposure, or vertebral fracture risk.

Recognizing and treating glucocorticoid-induced osteoporosis in patients with pulmonary diseases

Glucocorticoids are frequently used to treat patients with pulmonary diseases, but continuous long-term use of glucocorticoids may lead to significant bone loss and an increased risk of fragility fractures. Patients with certain lung diseases, regardless of pharmacotherapy-particularly COPD and cystic fibrosis-and patients waiting for lung transplantation are also at increased risk of osteoporosis. Fragility fractures, especially of the hip, will have substantial effects on the health and well-being of older patients. Vertebral collapse and kyphosis secondary to glucocorticoid-induced osteoporosis (GIO) may affect lung function. Identification of patients with osteopenia, osteoporosis, or fragility fractures related to osteoporosis is strongly recommended and should lead to appropriate treatment. Prevention of GIO in patients receiving continuous oral glucocorticoids is also recommended. In patients receiving either high-dose inhaled glucocorticoids or low- to medium-dose inhaled glucocorticoids with frequent courses of oral glucocorticoids, bone mineral density measurements should be performed to screen for osteopenia and osteoporosis. A bisphosphonate (risedronate or alendronate), calcium and vitamin D supplementation, and lifestyle modifications are recommended for the prevention and treatment of GIO.

Potential effects of fluticasone propionate on bone mineral density in patients with asthma: a 2-year randomized, double-blind, placebo-controlled trial

OBJECTIVE

To evaluate the effects of treatment with fluticasone propionate vs placebo on bone, hypothalamic-pituitary-adrenal (HPA) axis function, and the eyes in patients with asthma.

PATIENTS AND METHODS

This randomized, double-blind, placebo-controlled study of 160 patients with asthma who had minimal previous exposure to corticosteroids was conducted from July 1994 through June 1997. Patients received fluticasone at 88 microg twice daily, fluticasone at 440 microg twice daily, or placebo twice daily for 2 years. Bone mineral density (BMD) was evaluated every 6 months by lumbar spine, proximal femur, and total body scans. Measurements of HPA axis function and ophthalmic evaluations were conducted at similar intervals.

RESULTS

Among the 3 groups, no significant differences were observed in BMD at week 104 (at any anatomical site). Mean percent change from baseline in the lumbar spine was less than 1% for all 3 groups. At all time points, HPA axis function was similar in the 88-microg fluticasone group compared with the placebo group. For mean change from baseline in corticotropin-stimulated peak cortisol (P = .003 and P = .02 at weeks 24 and 52, respectively) and area under the stimulated plasma cortisol vs time curve (P = .002 and P = .02 at weeks 24 and 52, respectively), statistically significant reductions from baseline were observed in the 440-microg fluticasone group compared with the placebo group. These reductions of 10% to 13% from baseline were not accompanied by other signs of systemic effect and did not persist with continued treatment (at weeks 76 and 104). No important ocular changes were observed.

CONCLUSION

Long-term treatment with 88 microg of fluticasone twice daily was comparable to placebo in all skeletal, ophthalmic, and HPA axis function assessments. Treatment with fluticasone at 440 microg twice daily resulted in no significant effects on BMD and a statistically significant but not clinically important temporary reduction in cortisol production.

Impact of long-term inhaled corticosteroid therapy on bone mineral density: results of a meta-analysis

BACKGROUND

The impact of long-term inhaled corticosteroid (ICS) therapy on bone mineral density (BMD) is poorly understood.

OBJECTIVE

To evaluate the impact of long-term ICS use on BMD.

METHODS

Random-effects meta-analysis. Published and unpublished literature were identified by searches of MEDLINE and EMBASE databases and consultation with experts. Studies reporting BMD among adult asthma and chronic obstructive pulmonary disease (COPD) patients using ICS and non-ICS controls were identified. Studies selected for review included at least 1 year of follow-up. Two independent reviewers evaluated studies; data from those meeting specified inclusion criteria were abstracted for inclusion in the meta-analysis.

RESULTS

Fourteen (5.3%) of 266 reviewed studies met specified inclusion criteria. Sufficient data were available to perform meta-analysis on 3 measures for ICS-using patients (lumbar, femoral neck, and major trochanter BMD) and 1 measure (lumbar BMD) for non-ICS-using controls. Using current National Asthma Education and Prevention Program definitions, the majority of studies (12 of 14) included patients receiving moderate to high doses of ICSs. Among ICS users, annual changes from baseline in lumbar, femoral neck, and major trochanter BMD (-0.23%, -0.17%, and +1.46%, respectively) were not statistically significant. Mean changes in lumbar BMD were also not significantly different from controls (-0.02%). Further, annual changes in lumbar BMD were not statistically significant for subgroups of patients with asthma or COPD.

CONCLUSIONS

Long-term use of ICSs in patients with asthma or COPD was not associated with significant changes in BMD.

Are nasal steroids safe?

Nasal steroids have emerged as an integral part of rhinitis management. Most studies have shown no evidence of significant hypothalamic-pituitary-adrenal axis suppression from nasal steroid use, at least based on dynamic testing. Bone mineral density loss, glaucoma, and cataract formation are risks associated with systemic steroids, but reports with nasal steroid use are few. Growth retardation has been seen with some nasal steroids, but not others, based on stadiometric growth studies. Further studies are certainly needed to resolve this issue. Nasal steroids, in general, have an excellent safety record.

Glucocorticoid-induced osteoporosis: pathophysiological data and recent treatments

Long-term glucocorticoid therapy promptly induces osteoporosis, whose severity depends on the dose and duration of the treatment. Recent data suggest that there is no safety threshold for adverse effects on bone. Glucocorticoid therapy impairs calcium intestinal absorption, dramatically suppresses osteoblastic formation, and stimulates osteocyte apoptosis. In contrast, the contribution of secondary hyperparathyroidism and increased bone resorption, although frequently mentioned, is now a focus of controversy. Beneficial effects on bone have been obtained with calcium and vitamin D supplementation, as well as with hormone replacement therapy (HRT) in postmenopausal women. Bisphosphonates are clearly effective in preventing and treating glucocorticoid-induced osteoporosis, although their mechanism of action in this condition remains poorly understood. Parathyroid hormone (PTH) is being evaluated as a potential therapeutic agent for glucocorticoid-induced osteoporosis.

COPD and osteoporosis

Osteoporosis, with resulting fractures, is a significant problem in patients with advanced COPD. The etiology for the bone loss is diverse but includes smoking, vitamin D deficiency, low body mass index, hypogonadism, sedentary lifestyle, and use of glucocorticoids. Effective strategies to prevent bone loss and/or to treat osteoporosis include calcium and vitamin D, hormone replacement when indicated, calcitonin, and bisphosphonate administration. However, many patients remain undiagnosed until their first fracture because of the lack of recognition of the disease. With an increased awareness by pulmonologists and the increased use of preventive strategies, the impact of osteoporosis on those patients with COPD should decrease.

Inhaled corticosteroid effects on bone metabolism in asthma and mild chronic obstructive pulmonary disease

BACKGROUND

Inhaled corticosteroids form the main therapy for asthma, but there is increasing concern about the potential systematic effects of long-term inhaled corticosteroids including their effect on bone metabolism and bone loss.

OBJECTIVES

To determine the effect of inhaled corticosteroids use on biochemical markers of bone turnover, bone mineral density and the development of fractures.

SEARCH STRATEGY

We searched the Cochrane Airways Group trials register, electronic reference databases, UK National Research Register, bibliographies of included studies, and contacted pharmaceutical companies.

SELECTION CRITERIA

Randomised trials of the effect of inhaled steroid versus placebo on markers of bone function and metabolism, in adults with asthma or mild COPD.

DATA COLLECTION AND ANALYSIS

Trial quality was assessed and data extracted from the papers included (2 reviewers per paper) and from additional data supplied by the authors.

MAIN RESULTS

Of 438 references found, seven met the inclusion criteria. Three studies were in healthy subjects asthma or COPD. The patients were generally less than 60 years old and the male:female ratio was 2:1. There was no evidence of increased risk of loss of bone mineral density (BMD) or fractures. There was no significant change in osteocalcin at conventional doses of inhaled corticosteroids (Standardised Mean Difference [SMD] -0.34 (95% Confidence Interval [CI] -0.72, 0.04), although a statistically significant change was seen in those studies using experimental doses of inhaled steroid in excess of the doses recommended by the British Thoracic Society SMD 0.97 (95% CI -1.61, -0.34). A statistically significant change in parathyroid hormone seen in one small short trial (n=10, 6 weeks) may have been due to the trial design and outcome measurements used.

REVIEWER'S CONCLUSIONS

In patients with asthma or mild COPD, there is no evidence of an effect of inhaled corticosteroid at conventional doses given for two or three years on BMD or vertebral fracture. Higher doses were associated with biochemical markers of increased bone turnover, but data on BMD and fractures at these doses are not available. There is a need for further, even longer term prospective studies of conventional and high doses of inhaled corticosteroids.

Effects of asthma and asthma therapies on bone mineral density

With improvements in techniques for measuring bone mass, interest and concern have increased about the effects of asthma therapies, particularly corticosteroids, on bone mineral density. Whether asthma itself causes bone loss remains unclear. Studies evaluating the effect of asthma therapies on bone mineral density are often difficult to interpret because of methodologic problems. These studies show that oral corticosteroids are associated with a reduction in bone mineral density and an increased risk of fracture. Studies evaluating the effects of inhaled corticosteroids on bone mineral density provide conflicting data, but there is increasing evidence that inhaled corticosteroids may have an adverse effect on bone. However, the benefits of inhaled corticosteroids in the treatment of asthma remain far greater than the risks. The data for the effects of other asthma therapies on bone mineral density are limited.

Effects of inhaled corticosteroid and short courses of oral corticosteroids on bone mineral density in asthmatic patients : a 4-year longitudinal study

BACKGROUND

It is not certain whether inhaled corticosteroid (ICS) therapy reduces bone mineral density (BMD) in asthmatic patients. In addition, the potential risk of osteoporosis associated with the rescue use of short courses of oral corticosteroids (SC-OCS) is unclear.

OBJECTIVE

To evaluate the effect of inhaled beclomethasone dipropionate (BDP) and SC-OCS on BMD in asthmatic patients.

DESIGN

A 4-year longitudinal study.

METHOD

Lumbar BMD was measured twice by dual-energy x-ray absorptiometry at a mean (+/- SD) interval of 4.2 +/- 0.1 years in 35 asthmatic adults (15 men and 20 postmenopausal women; mean age at the second evaluation, 60.6 +/- 11.5 years) who had been treated with BDP and SC-OCS.

RESULTS

The average period of BDP treatment was 7.7 +/- 2.2 years (range, 4.8 to 13.0 years) at the second evaluation. During the study period, the daily dose of BDP was 765 +/- 389 microg (range, 100 to 1,730 microg), and the frequency of SC-OCS was 1.9 +/- 2.7 courses per year (range, 0.0 to 8.9 courses per year). As a whole, lumbar BMD was unchanged during the course of the study, whereas the Z score (ie, the percentage of normal value predicted from age and sex) increased significantly. Changes in BMD and Z scores in patients receiving high doses of BDP (ie, > 1,000 microg/d; n = 9) were not significantly different from those of patients receiving lower doses (ie, <or= 1,000 microg/d; n = 26). However, patients receiving frequent SC-OCS (ie, > 2.5 courses per year; n = 9) showed a significantly greater loss in BMD and Z score compared with those receiving sporadic courses (ie, <or= 2.5 courses per year; n = 26) (p = 0.002 and p = 0.035, respectively).

CONCLUSIONS

ICS therapy per se does not affect BMD, whereas frequent SC-OCS may do so.

Effects of inhaled glucocorticoids on bone density in premenopausal women

BACKGROUND

Inhaled glucocorticoids are the most commonly used medications for the long-term treatment of patients with asthma. Whether long-term therapy with inhaled glucocorticoids reduces bone mass, as oral glucocorticoid therapy does, is controversial. In a three-year prospective study, we examined the relation between the dose of inhaled glucocorticoids and the rate of bone loss in premenopausal women with asthma.

METHODS

We studied 109 premenopausal women, 18 to 45 years of age, who had asthma and no known conditions that cause bone loss and who were treated with inhaled triamcinolone acetonide (100 microg per puff). We measured bone density by dual-photon absorptiometry at base line, at six months, and at one, two, and three years. Serum osteocalcin and parathyroid hormone and urinary N-telopeptide, cortisol, and calcium excretion were measured serially. We measured inhaled glucocorticoid use by means of monthly diaries, supported by the use of an automated actuator-monitoring device.

RESULTS

Inhaled glucocorticoid therapy was associated with a dose-related decline in bone density at both the total hip and the trochanter of 0.00044 g per square centimeter per puff per year of treatment (P= 0.01 and P=0.005, respectively). No dose-related effect was noted at the femoral neck or the spine. Even after the exclusion of all women who received oral or parenteral glucocorticoids at any time during the study, there was still an association between the decline in bone density and the number of puffs per year of use. Serum and urinary markers of bone turnover or adrenal function did not predict the degree of bone loss.

CONCLUSIONS

Inhaled glucocorticoids lead to a dose-related loss of bone at the hip in premenopausal women.

What are the alternatives to increasing inhaled corticosteroids for the long term control of asthma?

The Global Initiative for Asthma (GINA) guidelines stated the therapeutic goals for the management of asthma and, through a stepwise approach to treatment, defined the various grades of asthma severity and the therapeutic options available to the clinician at each step. This article considers the options at step 3; the management of a patient with poorly controlled asthma who is already taking low-dose inhaled corticosteroids. Before considering a change in therapy, the clinician should rule out alternative diagnoses, confirm compliance with treatment, explore potential exacerbants in the patient's environment and, where possible, remove them. If a change in medication is necessary, the choice of drug will depend on the therapeutic goal that needs to be achieved. If the most important goal is the control of symptoms and optimisation of lung function, most studies support the addition of a long-acting beta(2)-agonist to low dose inhaled corticosteroids. If recurrent severe exacerbations are a major feature of the poor control, increasing the dosage of inhaled corticosteroids may be most effective. The addition of a leukotriene antagonist may be the best choice if exercise-induced symptoms are prominent or in the setting of aspirin-sensitive asthma. General recommendations supported by the findings of large therapeutic trials do not allow for significant variability in the individual response to a particular drug. Receptor polymorphisms have recently been discovered that may account for variability in the response to beta(2)-agonists and leukotriene receptor antagonists. However, until more is known about the reasons behind this variability, a therapeutic trial may be the most effective way of determining the best drug for an individual patient. One of the key developments in asthma over the past decade has been the acceptance of the concept of asthma as a chronic inflammatory disorder of the airways. However, the long term significance of this inflammation is not clear and the importance of control of inflammation beyond the suppression of symptoms, reduction of exacerbation frequency and the optimisation of lung function has not been established.

A comparison of the efficacy and safety of a half dose of fluticasone propionate with beclamethasone dipropionate and budesonide in childhood asthma

This study was carried out in an attempt to compare the efficacy and safety of fluticasone propionate (FP) at the half dose of budesonide (BUD) and beclamethasone dipropionate (BD) in childhood asthma. Ninety-six children with moderate to severe asthma (9.6 +/- 2.17 years) whose asthma was already controlled on BUD (n = 52) or BD (n = 44) were recruited into the study. In the first part of the study (the first 12 weeks) each group was followed with three weekly lung function measurements, daily diary records, and peak expiratory flow (PEF) measurements on the initial medication. At the end of 6 weeks, drugs were switched to a half dose of FP, and the subjects were followed for another 6 weeks. Blood samples were obtained for osteocalcin and plasma cortisol levels after each treatment period. In the second part of the study, 50 patients continued to take FP at the half dose of BUD or BD for another 30 weeks. Clinic visits, including lung function and PEF measurements, were conducted every 10 weeks. After 6 weeks of FP treatment, there was a small but statistically significant decrease in FEV1 and FEF(25-75) in both groups (BUD and BD) without any significant obstruction. These mild changes in lung function measurements continued during long-term follow-up. However, there was no statistically significant further decrease in any lung function parameters while receiving FP (visits 3-8) (coefficient = -0.00751 L/day, p = 0.39 for FEF(25-75) and coefficient = -0.00910 L/sec/day, p = 0.055 for FEV1). There were no significant changes in the morning and evening PEF measurements and diurnal PEF variations after 6 weeks of treatment with FP compared with BUD and BD treatments. There were no significant changes in basal cortisol and osteocalcin levels before or after 6 weeks of FP treatment (p > 0.05). The present study concluded that, although FP at the half dose of BUD or BD seems to maintain reasonable control of the disease symptoms, a mild but significant and persistent decrease in lung function parameters may indicate that FP may not be twice as potent as BUD or BD in childhood asthma by evaluation of lung functions. This conclusion must be further verified with long-term studies.

Bone mineral density in subjects with mild asthma randomised to treatment with inhaled corticosteroids or non-corticosteroid treatment for two years

BACKGROUND

Inhaled corticosteroids are clearly beneficial for patients with asthma of moderate severity, but the risks and benefits of using them in patients with milder asthma are less clear. We have compared the change in bone mineral density over 2 years in adults with mild asthma randomised to receive an inhaled corticosteroid or non-corticosteroid treatment.

METHODS

Subjects with mild asthma (mean forced expiratory volume in one second (FEV(1)) 86% predicted, mean age 35 years, taking beta agonists only) were randomised to receive inhaled budesonide, inhaled beclomethasone dipropionate, or non-corticosteroid treatment for 2 years in a prospective randomised open study in 19 centres in France, New Zealand, Spain, and the UK. The corticosteroid dose was adjusted according to a written self-management plan. The main outcome measure-change in bone mineral density after 6, 12, and 24 months-was measured "blind". Secondary outcomes included lung function, the relation between change in bone density and inhaled steroid dose and change in biochemical markers of bone metabolism.

RESULTS

Of 374 subjects randomised, 239 (64%) completed the study and were included in the analysis. The median daily doses of inhaled budesonide (n=87) and beclomethasone (n=74) were 389 microg and 499 microg, respectively. Subjects treated with an inhaled corticosteroid had better asthma control than those in the reference group (n=78). Change in bone mineral density did not differ between the three groups over the 2 years, nor did it correlate with changes in markers of bone metabolism. The mean change in bone mineral density over 2 years in the budesonide, beclomethasone dipropionate, and reference groups was 0.1%, -0.4%, and 0.4% for the lumbar spine and -0.9%, -0.9%, and -0.4% for neck of the femur. Mean daily dose of inhaled steroid was related to reduction in bone mineral density at the lumbar spine but not at the femoral neck.

CONCLUSION

In subjects with mild asthma an inhaled corticosteroid provided better asthma control than alternative non-corticosteroid treatment with no difference in change in bone mineral density over 2 years. The relation between dose of inhaled corticosteroid and change in bone density at the lumbar spine may be due to a direct effect of inhaled corticosteroids on bone. Since inhaled steroid dose is also related inversely to lung function, an effect of asthma severity on bone density was also possible.

Inhaled fluticasone propionate. A pharmacoeconomic review of its use in the management of asthma

Contemporary asthma management guidelines list inhaled corticosteroids as the preferred controller medication for patients with persistent asthma. Despite the availability of explicit guidelines, there is evidence that these agents are underused and that guidelines are not always adhered to. Fluticasone propionate is one of several inhaled corticosteroids used for the treatment of asthma. Like other agents of its class, its efficacy is backed by extensive clinical data. More recently, the quality of life of recipients of fluticasone propionate and its relative cost effectiveness have been investigated. A series of comparative analyses show that inhaled fluticasone propionate is more cost effective than oral zafirlukast and triamcinolone acetonide and slightly more cost effective than flunisolide in adult patients with asthma. Analyses used cost per symptom-free day and/or cost per successfully treated patient as outcome measures and were generally conducted from the perspective of the third-party payer. When administered at a microgram dose of half or less than budesonide (as is therapeutically appropriate), the cost effectiveness of fluticasone propionate was similar to or better than that of budesonide. In children, fluticasone propionate was more cost effective per treatment success compared with inhaled sodium cromoglycate. Quality-of-life assessments in patients with mild to moderate disease show that inhaled fluticasone propionate achieved improvements which were deemed to be clinically meaningful in patients with mild to moderate asthma; these changes were significantly greater than those achieved with oral zafirlukast, inhaled triamcinolone acetonide or placebo. Greater improvements were evident with inhaled fluticasone propionate in patients with severe disease.

CONCLUSIONS

In addition to the considerable body of clinical evidence supporting the use of inhaled fluticasone propionate in patients with asthma, accumulating short term cost-effectiveness data also suggest that this agent can be administered for a similar or lower cost per outcome than other inhaled corticosteroids or oral zafirlukast. Importantly, the clinical benefits offered by fluticasone propionate in patients with persistent asthma are accompanied by clinically significant improvements in quality of life.

Effect of an inhaled glucocorticoid, flunisolide, on bone mineral density: a 2-year prospective, controlled trial

OBJECTIVE

To determine the long-term effect of an inhaled glucocorticoid, flunisolide, on bone mineral density in a prospective, controlled study.

METHODS

Patients with asthma treated with inhaled glucocorticoids, but not requiring other types of glucocorticoid treatment, were recruited as study patients (N = 11). All study patients were treated with inhaled flunisolide, 500 mg twice a day for a 2-year period, for consistency. Patients with asthma not requiring any type of glucocorticoid treatment were recruited as control subjects (N = 18). All patients were between the ages of 30 and 50 years, and all female patients were premenopausal. Measurements of bone mineral density, serum bone-specific alkaline phosphatase, serum osteocalcin, 24-hour urine hydroxyproline-to-creatinine ratio, forced expiratory volume in 1 second/forced vital capacity, and forced expiratory flow, midexpiratory phase were obtained at baseline and repeated in 1 year and again in 2 years.

RESULTS

No statistically significant changes were noted in bone mineral density measured at the lumbar spine, femoral neck, Ward's triangle, or femoral trochanter in the users of inhaled flunisolide in comparison with the control subjects at 1 year or at 2 years, with one exception. The percentage change from baseline of bone mineral density measured at the femoral trochanter at 1 year was greater in the inhaled flunisolide users than in the control group, 3.1% versus -0.8%, respectively (P = 0.01). No statistically significant changes were found in markers of bone turnover or measures of asthma severity.

CONCLUSION

Inhaled flunisolide, administered in standard doses, had no deleterious effect on bone mineral density or on biochemical markers of bone turnover after a 2-year period.

Inhaled corticosteroid use and bone-mineral density in patients with asthma

BACKGROUND

Inhaled corticosteroids are absorbed into the systemic circulation, but the extent to which they have adverse effects on bone is uncertain. The question is important since 3% of the European population take an inhaled corticosteroid regularly and may do so for many years.

METHODS

We studied the dose-response relation between cumulative inhaled corticosteroid dose and bone-mineral density at the lumbar spine and proximal femur in 196 adults (119 women) with asthma aged 20-40 years. Patients had taken an inhaled corticosteroid regularly for at least 6 months, and had had limited exposure to systemic steroids. Cumulative dose of inhaled corticosteroid was calculated from questionnaires and computerised and written general-practice records, and its effect on bone-mineral density was estimated by multiple regression analysis.

FINDINGS

Median duration of inhaled corticosteroid treatment was 6 years (range 0.5-24), and median cumulative dose was 876 mg (87-4380). There was a negative association between cumulative dose of inhaled corticosteroid and bone-mineral density at the lumbar spine (L2-L4), femoral neck, Ward's triangle, and trochanter, both before and after adjustment for the effects of age and sex. A doubling in dose of inhaled corticosteroid was associated with a decrease in bone-mineral density at the lumbar spine of 0.16 SD (95% CI 0.04-0.28). Similar decreases were found at the femoral neck, Ward's triangle, and trochanter. Adjustment for potential confounding factors including physical activity and past oral, nasal, dermal, and parenteral corticosteroids did not weaken the associations.

INTERPRETATION

This study provides evidence of a negative relation between total cumulative dose of inhaled corticosteroid and bone-mineral density in patients with asthma.