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Mesa 2. Control y biomarcadores
Dr. Borja García-
Cosío Piqueras
Hospital Universitario Son Espases.
Mallorca
Mesa 2. Control y biomarcadores
[ATS] Do Inhaled
Corticosteroids (ICS)
Reduce Rate Of Decline Of
Lung Function In
COPD Patients With
Eosinophil Count ≥ 2%?
Barnes N, Sharma R, Lettis S,
Calverley PM
Mesa 2. Control y biomarcadores
Background and objectives
• COPD patients with a blood eosinophil count ≥2 % show a greater reduction in exacerbations when given ICS.
• Whether the same is true for rate of decline of lung function is unknown.
Pascoe et al. Lancet Resp Med 2015
Mesa 2. Control y biomarcadores
Methods
• The results of ISOLDE (FLTB3054) (Burge PS et al BMJ
2000;320:1297–303), a 3-year study of the effects of FP 500mcg
twice daily on rate of decline of FEV1 in well-characterised COPD
patients were re-analysed by baseline blood eosinophil count (≥2 %,
<2 %).
Mesa 2. Control y biomarcadores
Results• Eosinophil count was <2 % in 68 % of patients; the spirometric
characteristics of these patients were similar to those with an eosinophil count ≥2 %.
Mesa 2. Control y biomarcadores
Discussion
• A baseline blood eosinophil count of ≥2 % identifies a group of
COPD patients who show a slower rate of decline of FEV1 when
treated with ICSs.
Xuan W et al. Am J Resp Crit Care Med 2000
Mesa 2. Control y biomarcadores
[ATS] Human Rhinovirus
Infection And CAT Scores
During COPD
Exacerbations
George SN, Mackay AJ, et al.
Mesa 2. Control y biomarcadores
Background and objectives
• Human rhinovirus (HRV) is the main aetiological
agent of virus-associated COPD exacerbations
(Seemungal et al. ARJCCM 2001)
• The COPD Assessment Test (CAT) scores have
been shown to increase at COPD exacerbation
(Mackay et al. AJRCCM 2012).
• Authors hypothesized that HRV prevalence and
load relate to CAT scores.
Mesa 2. Control y biomarcadores
Methods
• Real-time quantitative-PCR was used to assess HRV prevalence and load in sputum samples taken at exacerbation presentation, and during recovery at Days 3, 7, 14, 35 and 56 thereafter.
• Exacerbations were defined as an increase in at least two respiratory symptoms for two consecutive days, recorded on prospectively-completed daily diary cards, with at least one symptom being a major symptom; dyspnoea, sputum purulence or volume (Seemungal et al. ARJCCM 1998).
• Patients completed a paper version of the CAT diary at each clinic visit based on the symptoms they experienced that day.
Mesa 2. Control y biomarcadores
Results
• Sixty-eight patients with moderate to severe COPD (mean age 72.9 years (SD±7.6); stable state FEV1
48.9 % predicted (±19.6 %); FEV1 /FVC 0.46 (±0.1); FEV1 1.18L (±0.5); current smoker 33 %; male
gender 63 %) recorded CAT scores for 388 sputum samples taken at different time points during
exacerbation and recovery.
Mesa 2. Control y biomarcadores
Discussion
• Conclusion: This suggests that exacerbations associated with HRV
infection have a greater impact on patient’s health status.