Document Detail

Increased alveolar nitric oxide in early systemic sclerosis.
MedLine Citation:
PMID:  21050538     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: Assessment of inflammatory activity in interstitial lung disease of systemic sclerosis (SSc) is difficult. Nitric oxide (NO) has gained attention in the pathogenesis of SSc. The aim of the study was to investigate alveolar NO concentration (CA(NO)) in SSc patients with short disease duration and to relate CA(NO) to radiologic findings.
METHODS: In a prospective study, 34 consecutive patients with disease duration of less than 2 years from onset of first non-Raynaud symptom and 26 healthy controls were enrolled. Exhaled NO was measured and CA(NO) was calculated. CA(NO) levels were related to the radiologic extent of pulmonary fibrosis measured as the extent of traction bronchiectasis within areas of ground glass opacities and reticulations.
RESULTS: CA(NO) levels were increased in patients with early SSc compared to healthy controls (3.52 (2.94-4.09) versus 2.08 (1.6-2.6); p<0.001). Both SSc patients with SSc-ILD (3.56 (3.04-4.73), p<0.001) and SSc patients without SSc-ILD (2.98 (2.68-3.98), p<0.01) had higher CA(NO) levels compared with healthy controls (2.08 (1.6-2.6)). CA(NO) levels did not differ between SSc patients without SSc-ILD and SSc patients with SSC-ILD. CA(NO) levels did not correlate to the extent of pulmonary fibrosis but were associated with the extent of ground glass opacities (rs=0.37, p<0.05) and reticulations (rs=0.37, p<0.05) on HRCT. CA(NO) levels were not correlated to lung function tests.
CONCLUSIONS: In patients with early SSc, alveolar NO is increased and may precede radiological changes of SSc-ILD. CA(NO) may therefore be a marker of early lung involvement.
D M Wuttge; G Bozovic; R Hesselstrand; D Aronsson; L Bjermer; A Scheja; E Tufvesson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-11-03
Journal Detail:
Title:  Clinical and experimental rheumatology     Volume:  28     ISSN:  0392-856X     ISO Abbreviation:  Clin. Exp. Rheumatol.     Publication Date:    2010 Sep-Oct
Date Detail:
Created Date:  2010-11-05     Completed Date:  2010-12-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8308521     Medline TA:  Clin Exp Rheumatol     Country:  Italy    
Other Details:
Languages:  eng     Pagination:  S5-9     Citation Subset:  IM    
Department of Clinical Sciences, Lund, Sweden.
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MeSH Terms
Biological Markers / metabolism
Breath Tests
Middle Aged
Nitric Oxide / metabolism*
Prospective Studies
Pulmonary Alveoli / metabolism*,  pathology
Radiography, Thoracic
Respiratory Function Tests
Scleroderma, Systemic / metabolism*,  pathology,  radiography
Skin / pathology
Time Factors
Tomography, X-Ray Computed
Reg. No./Substance:
0/Biological Markers; 10102-43-9/Nitric Oxide

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