{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,15]],"date-time":"2026-04-15T17:48:20Z","timestamp":1776275300259,"version":"3.50.1"},"reference-count":46,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2012,3,19]],"date-time":"2012-03-19T00:00:00Z","timestamp":1332115200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Pediatric Pulmonology"],"published-print":{"date-parts":[[2012,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Rationale<\/jats:title><jats:p>Cystic fibrosis (CF) lung disease is characterized by structural changes and remodeling in airway architecture and lung parenchyma. Neutrophilic inflammation and infection lead to injury and breakdown of airway matrix constituents, including elastin. The non\u2010invasive measurement of urinary desmosine (UDes), a breakdown product of elastin, may be reflective of ongoing lung injury and may serve as a biomarker of active short\u2010term damage during pulmonary exacerbation. Our objectives were to measure desmosine in the urine of CF patients hospitalized for treatment of a pulmonary exacerbation and to explore the correlation between desmosine concentration and other markers of clinical improvement, including lung function and inflammatory mediators.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Urine and blood samples plus lung function measurements were collected at up to three points during hospitalization for treatment of a CF pulmonary exacerbation. We used a repeated measures model, adjusted for age and time between measurements, to compare log transformed urine desmosine concentrations across multiple time points and to correlate those concentrations with related clinical variables. Change in UDes concentration was investigated using a statistical model that incorporated normalization factors to account for variations in urinary concentration.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Desmosine was measured by radioimmunoassay (RIA) in 155 spot urine samples from 53 CF patients hospitalized for 63 pulmonary exacerbations (range of results: 0\u2013235\u2009pmol Des\/ml). Specific gravity (SG) adjusted UDes concentration decreased significantly during admission for CF pulmonary exacerbation, <jats:italic>P<\/jats:italic>\u2009&lt;\u20090.01 (average length of stay\u2009=\u200911 days). No correlation was observed between UDes concentration and lung function or inflammatory markers.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>UDes decreased significantly following treatment for an acute pulmonary exacerbation and may be a useful biomarker of short\u2010term injury to the CF lung. Further investigation is needed to evaluate the utility of UDes concentration in the long\u2010term progression of CF lung disease. Pediatr Pulmonol. 2012. 47:856\u2013863. \u00a9 2012 Wiley Periodicals, Inc.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ppul.22525","type":"journal-article","created":{"date-parts":[[2012,3,19]],"date-time":"2012-03-19T21:13:21Z","timestamp":1332191601000},"page":"856-863","source":"Crossref","is-referenced-by-count":19,"title":["Urinary desmosine: A biomarker of structural lung injury during CF pulmonary exacerbation"],"prefix":"10.1002","volume":"47","author":[{"given":"Theresa A.","family":"Laguna","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brandie D.","family":"Wagner","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Barry","family":"Starcher","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Heidi K.","family":"Luckey 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