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Inflammatory Biomarkers and Comorbidities in Chronic Obstructive Pulmonary Disease.
MedLine Citation:
PMID:  22983959     Owner:  NLM     Status:  Publisher    
RATIONALE: Patients with chronic obstructive pulmonary disease (COPD) have evidence of systemic inflammation that may be implicated in the development of comorbidities. OBJECTIVES: To test the hypothesis that elevated levels of three inflammatory biomarkers are associated with increased risk of comorbidities in COPD. METHODS: We examined 8656 COPD patients from two large Danish population studies and during a median five years follow-up recorded hospital admissions due to major comorbidities as endpoints. MEASUREMENTS AND MAIN RESULTS: We measured baseline C-reactive protein (CRP), fibrinogen, and leukocyte count, and recorded admissions due to ischemic heart disease, myocardial infarction, heart failure, type II diabetes, lung cancer, pneumonia, pulmonary embolism, hip fracture, and depression for all participants. Multifactorially adjusted risk of ischemic heart disease was increased by a factor of 2.19(95%confidence interval:1.48-3.23) in individuals with three biomarkers elevated (CRP above 3 mg per liter, fibrinogen above 14 μmol per liter, and leukocyte count above 9 x109 per liter) versus individuals with all three biomarkers at or below these limits. Corresponding hazard ratios were 2.32(1.34-4.04) for myocardial infarction, 2.63(1.71-4.04) for heart failure, 3.54(2.03-6.19) for diabetes, 4.00(2.12-7.54) for lung cancer, and 2.71(2.03-3.63) for pneumonia. There were no consistent differences in risk of pulmonary embolism, hip fracture, or depression as a function of these three biomarkers. CONCLUSIONS: Simultaneously elevated levels of CRP, fibrinogen, and leukocyte count are associated with a 2 to 4-fold increased risk of major comorbidities in COPD. These biomarkers may be an additional tool for clinicians to conduct stratified management of comorbidities in COPD.
Mette Thomsen; Morten Dahl; Peter Lange; Jørgen Vestbo; Børge G Nordestgaard
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-13
Journal Detail:
Title:  American journal of respiratory and critical care medicine     Volume:  -     ISSN:  1535-4970     ISO Abbreviation:  Am. J. Respir. Crit. Care Med.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9421642     Medline TA:  Am J Respir Crit Care Med     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Clinical Biochemistry and the Copenhagen General Population Study, Herlev Hospital, Copenhagen University Hospital, Herlev, Denmark.
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