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      International Journal of COPD (submit here)

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      Long-term use of fluticasone propionate/salmeterol fixed-dose combination and incidence of cataracts and glaucoma among chronic obstructive pulmonary disease patients in the UK General Practice Research Database

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          Abstract

          Objectives

          Some large population-based studies have reported a dose-related increased risk of cataracts and glaucoma associated with use of inhaled corticosteroids (ICS) in patients with asthma or chronic obstructive pulmonary disease (COPD). We evaluated the association between use of ICS-containing products, specifically fluticasone propionate/salmeterol fixed-dose combination (FSC), and incidence of cataracts and glaucoma among patients with COPD in a large electronic medical record database in the United Kingdom.

          Methods

          We identified a cohort of patients aged 45 years and over with COPD in the General Practice Research Database (GPRD) between 2003 and 2006. Cases of incident cataracts or glaucoma were defined based on diagnosis and procedure codes and matched to controls from the risk set to estimate odds ratios (OR) and 95% confidence intervals (CI). The association with FSC or ICS exposure was modeled using conditional logistic regression. Medication exposure was assessed with respect to recency, duration, and number of prescriptions prior to the index date. Average daily dose was defined as none, low (1–250 mcg), medium (251–500 mcg), high (501–1000 mcg), or very high (1001+ mcg) using fluticasone propionate (FP) equivalents.

          Results

          We identified 2941 incident cataract cases and 327 incident glaucoma cases in the COPD cohort (n = 53,191). FSC or ICS prescriptions were not associated with risk of incident cataracts or glaucoma for any exposure category, after adjusting for confounders. We observed a lack of a dose response in all analyses, where low dose was the reference group. The odds of cataracts associated with FSC dose were medium OR: 1.1 (95% CI: 0.9–1.4); high OR: 1.2 (95% CI: 0.9–1.5); and very high OR: 1.2 (95% CI: 0.9–1.7). The odds of glaucoma associated with FSC dose: medium OR: 1.0 (95% CI: 0.5–2.1); high OR: 1.0 (95% CI: 0.5–2.0); and very high OR: 1.0 (95% CI: 0.4–2.8).

          Conclusions

          FSC or other ICS exposure was not associated with an increased odds of cataracts or glaucoma, nor was a dose–response relationship observed in this population-based nested case-control study of COPD patients in the United Kingdom.

          Most cited references23

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          50 years of asthma: UK trends from 1955 to 2004.

          Trends in asthma indicators from population surveys (prevalence) and routine statistics (primary care, prescriptions, hospital admissions and mortality) in the UK were reviewed from 1955 to 2004. The prevalence of asthma increased in children by 2 to 3-fold, but may have flattened or even fallen recently. Current trends in adult prevalence are flat. The prevalence of a life-time diagnosis of asthma increased in all age groups. The incidence of new asthma episodes presenting to general practitioners increased in all ages to a plateau in the mid 1990s and has declined since. During the 1990s, the annual prevalence of new cases of asthma and of treated asthma in general practice showed no major change. Hospital admissions increased from the early 1960s, more so in children, until the late 1980s and have fallen since. Asthma mortality showed two waves, a shorter and more intense one in the mid 1960s and a longer and less intense one in the late 1970s and early 1980s. The relative roles of diagnostic transfer, coding changes, medical care and epidemiological factors are discussed.
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            Recent trends in physician diagnosed COPD in women and men in the UK.

            Recent trends in physician diagnosed chronic obstructive pulmonary disease (COPD) in the UK were estimated, with a particular focus on women. A retrospective cohort of British patients with COPD was constructed from the General Practice Research Database (GPRD), a large automated database of UK general practice data. Prevalence and all-cause mortality rates by sex, calendar year, and severity of COPD, based on treatment only, were estimated from January 1990 to December 1997. A total of 50 714 incident COPD patients were studied, 23 277 (45.9%) of whom were women. From 1990 to 1997 the annual prevalence rates of physician diagnosed COPD in women rose continuously from 0.80% (95% CI 0.75 to 0.83) to 1.36% (95% CI 1.34 to 1.39), (p for trend <0.01), rising to the rate observed in men in 1990. Increases in the prevalence of COPD were observed in women of all ages; in contrast, a plateau was observed in the prevalence of COPD in men from the mid 1990s. All-cause mortality rates were higher in men than in women (106.8 versus 82.2 per 1000 person-years), with a consistently increased relative risk in men of 1.3 even after controlling for the severity of COPD. Significantly increased mortality rates were also observed in adults aged less than 65 years. The mean age at death was 76.5 years; patients with severe COPD died an average of three years before those with mild disease (p<0.01) and four years before the age and sex matched reference population. While prevalence rates of COPD in the UK seem to have peaked in men, they are continuing to rise in women. This trend, together with the ageing of the population and the long term cumulative effect of pack-years of smoking in women, is likely to increase the present burden of COPD in the UK.
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              Use of inhaled and oral corticosteroids and the long-term risk of cataract.

              Longitudinal associations between inhaled and oral corticosteroid use and 10-year incident cataract were examined. Population-based cohort study. The Blue Mountains Eye Study examined 3654 Australians aged 49 years or older (1992-1994); 2335 were re-examined after 5 years and 1952 were re-examined after 10 years (75.1%, 75.6% of survivors, respectively). Questionnaires were used to assess inhaled and oral corticosteroid use at baseline. Past users were participants who had used these medications for at least 1 month in the past but were not using them at baseline. Current users were those who were using these medications at baseline and had been doing so for at least 1 month. Ever users combined past and current users. Lens photographs were obtained at each examination and graded for nuclear, cortical, and posterior subcapsular (PSC) cataracts following the Wisconsin Cataract Grading System. Participants without a specific subtype of cataract in either eye at baseline were considered to be at risk of that type of cataract developing over the 10-year follow-up. Incidence of each cataract subtype in this report refers to person-specific, first-eye incidence. At baseline, 103 participants were current and 120 past users of inhaled corticosteroids, and 31 were current and 147 were past users of oral corticosteroids. Current users had a greater risk of developing PSC cataract after adjustment for age and gender (inhaled: odds ratio [OR] 2.50, 95% confidence interval [CI] 1.33-4.69; oral: OR 4.11; 95% CI 1.67-10.08) and nuclear cataract (inhaled: OR 2.04, 95% CI 1.21-3.43; oral: OR 3.45, 95% CI 1.26-9.43) but not cortical cataract. Interaction between inhaled and oral corticosteroid use was significant for PSC (P = 0.01) and nuclear (P = 0.02) cataract incidence. In subgroup analyses, only individuals who used both inhaled and oral steroids were at increased risk of PSC cataract (after adjusting for age, sex, smoking, hypertension, diabetes, and education levels; OR 4.76, 95% CI 2.59-8.74), comparing ever users of both with users of neither. High long-term risks of PSC and nuclear cataract development were found for users of combined inhaled and oral corticosteroids.
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                Author and article information

                Journal
                Int J Chron Obstruct Pulmon Dis
                International Journal of COPD
                International Journal of Chronic Obstructive Pulmonary Disease
                Dove Medical Press
                1176-9106
                1178-2005
                2011
                2011
                16 September 2011
                : 6
                : 467-476
                Affiliations
                WorldWide Epidemiology, GlaxoSmithKline, Durham, NC, USA
                Author notes
                Correspondence: Kourtney J Davis, GlaxoSmithKline, Five Moore Drive, PO Box 13398, Research Triangle Park, NC 27709-3398, USA, Tel +1 919 483 8529, Fax +1 919 315 8747, Email kourtney.j.davis@ 123456gsk.com
                Article
                copd-6-467
                10.2147/COPD.S14247
                3186745
                22003292
                06a3f6f2-6751-4507-bd98-001c90c3b88c
                © 2011 Miller et al, publisher and licensee Dove Medical Press Ltd.

                This is an Open Access article which permits unrestricted noncommercial use, provided the original work is properly cited.

                History
                Categories
                Original Research

                Respiratory medicine
                risk,fluticasone propionate/salmeterol,cataracts,glaucoma,inhaled corticosteroids

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