C-reactive protein and copeptin: prognostic predictors in chronic obstructive pulmonary disease exacerbationsAntonescu-Turcu, Andreea La; Tomic, RadebCurrent Opinion in Pulmonary Medicine: March 2009 - Volume 15 - Issue 2 - p 120–125 doi: 10.1097/MCP.0b013e3283218603 Obstructive, occupational and environmental diseases: Edited by Basil Varkey Buy Abstract Author InformationAuthors Article MetricsMetrics Purpose of review Acute exacerbation of chronic obstructive pulmonary disease (COPD) is a natural event in the course of COPD and remains a major cause of morbidity and mortality associated with this disease. Clinical criteria that define an acute exacerbation are subjective and open for debate. Identifying biomarkers that would be easily measured and followed in patients with acute exacerbation of COPD seems to be highly attractive. The aim of this review is to assess the role of biomarkers, C-reactive protein (CRP) and copeptin, as prognostic predictors in COPD exacerbations. Recent findings Many pulmonary biomarkers have been extensively studied in the recent years. CRP and copeptin have gained particular interest. Recent data suggest that CRP is elevated during an acute exacerbation of COPD but CRP alone is neither sensitive nor specific in predicting clinical severity or outcome. Copeptin increases during acute exacerbation of COPD and may correlate with disease severity. Summary Further studies are needed to determine the role of CRP and copeptin as biomarkers that aid in diagnosis and clinical outcome in acute exacerbation of COPD. aMedical College of Wisconsin and Zablocki VA Medical Center, Milwaukee, USA bMedical College of Wisconsin, Milwaukee, Wisconsin, USA Correspondence to Andreea L. Antonescu-Turcu, MD, Pulmonary Department, Medical College of Wisconsin, 9200 W Wisconsin Ave, Milwaukee, WI 53226, USA Tel: +1 414 456 7043; fax: +1 414 382 5327; e-mail: firstname.lastname@example.org © 2009 Lippincott Williams & Wilkins, Inc.