Biomarkers in asthma.

Abstract:

PURPOSE OF REVIEW:The purpose of this review is to highlight seminal and current literature that informs our understanding of the clinical and investigative utility of biomarkers in asthma. Biomarkers derive from a variety of sources [bronchiolar lavage (BAL), sputum, exhaled breath, and blood], and have widely variant performance characteristics, and applicability. RECENT FINDINGS:Increasing attention is given to biomarkers in exhaled breath, both gaseous (exhaled nitric oxide) and higher molecular weight moieties [in exhaled breath condensate (EBC)]. Current research in EBC analysis has focused on validation, standardization, and technical considerations, whereas research on exhaled nitric oxide (ENO) has moved to testing its predictive value in clinical situations. The use of advanced biostatistical techniques, and combinatorial analyses has led to additional advances in the utility of biomarkers. SUMMARY:To date, the best validated, and best performing biomarkers for clinical asthma appear to be measures of inflammation in induced sputum, and measures of ENO. Some trials using ENO appear particularly promising for early clinical use. EBC metrics are at present too inchoate for clinical purposes. However, not all important clinical and research questions can be addressed with sputum, EBC, or ENO metrics, leaving an important place for BAL, bronchial biopsy, and perhaps EBC measurements in the research arena.

journal_name

Curr Opin Pulm Med

authors

Murugan A,Prys-Picard C,Calhoun WJ

doi

10.1097/MCP.0b013e32831de235

subject

Has Abstract

pub_date

2009-01-01 00:00:00

pages

12-8

issue

1

eissn

1070-5287

issn

1531-6971

pii

00063198-200901000-00004

journal_volume

15

pub_type

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