{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T06:44:20Z","timestamp":1790318660790,"version":"4.1.0"},"reference-count":56,"publisher":"Oxford University Press (OUP)","issue":"4","license":[{"start":{"date-parts":[[2019,8,1]],"date-time":"2019-08-01T00:00:00Z","timestamp":1564617600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"funder":[{"DOI":"10.13039\/501100000024","name":"Canadian Institutes for Health Research","doi-asserted-by":"crossref","award":["MOP 1305040"],"award-info":[{"award-number":["MOP 1305040"]}],"id":[{"id":"10.13039\/501100000024","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019,8,15]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Rationale<\/jats:title>\n                    <jats:p>Histologic stains have been used as the gold standard to visualize extracellular matrix (ECM) changes associated with airway remodeling in asthma, yet they provide no information on the biochemical and structural characteristics of the ECM, which are vital to understanding alterations in tissue function.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>To demonstrate the use of nonlinear optical microscopy (NLOM) and texture analysis algorithms to image fibrillar collagen (second harmonic generation) and elastin (two-photon excited autofluorescence), to obtain biochemical and structural information on the remodeled ECM environment in asthma.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Nontransplantable donor lungs from donors with asthma (n\u2009=\u200913) and control (n\u2009=\u200912) donors were used for the assessment of airway collagen and elastin fibers by NLOM, and extraction of lung fibroblasts for in vitro experiments.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Measurements and Main Results<\/jats:title>\n                    <jats:p>Fibrillar collagen is not only increased but also highly disorganized and fragmented within large and small asthmatic airways compared with control subjects, using NLOM imaging. Furthermore, such structural alterations are present in pediatric and adult donors with asthma, irrespective of fatal disease. In vitro studies demonstrated that asthmatic airway fibroblasts are deficient in their packaging of fibrillar collagen-I and express less decorin, important for collagen fibril packaging. Packaging of collagen fibrils was found to be more disorganized in asthmatic airways compared with control subjects, using transmission electron microscopy.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>NLOM imaging enabled the structural assessment of the ECM, and the data suggest that airway remodeling in asthma involves the progressive accumulation of disorganized fibrillar collagen by airway fibroblasts. This study highlights the future potential clinical application of NLOM to assess airway remodeling in vivo.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1164\/rccm.201810-1855oc","type":"journal-article","created":{"date-parts":[[2019,4,5]],"date-time":"2019-04-05T10:41:14Z","timestamp":1554460874000},"page":"431-443","source":"Crossref","is-referenced-by-count":98,"title":["Defective Fibrillar Collagen Organization by Fibroblasts Contributes to Airway Remodeling in Asthma"],"prefix":"10.1093","volume":"200","author":[{"given":"Leila B.","family":"Mosta\u00e7o-Guidolin","sequence":"first","affiliation":[{"name":"Centre for Heart Lung Innovation, St. Paul\u2019s Hospital, Vancouver, British Columbia, Canada"},{"name":"Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emmanuel T.","family":"Osei","sequence":"additional","affiliation":[{"name":"Centre for Heart Lung Innovation, St. Paul\u2019s Hospital, Vancouver, British Columbia, Canada"},{"name":"Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jari","family":"Ullah","sequence":"additional","affiliation":[{"name":"Centre for Heart Lung Innovation, St. Paul\u2019s Hospital, Vancouver, British Columbia, Canada"},{"name":"Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Soheil","family":"Hajimohammadi","sequence":"additional","affiliation":[{"name":"Centre for Heart Lung Innovation, St. Paul\u2019s Hospital, Vancouver, British Columbia, Canada"},{"name":"Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"May","family":"Fouadi","sequence":"additional","affiliation":[{"name":"Centre for Heart Lung Innovation, St. Paul\u2019s Hospital, Vancouver, British Columbia, Canada"},{"name":"Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xian","family":"Li","sequence":"additional","affiliation":[{"name":"Centre for Heart Lung Innovation, St. Paul\u2019s Hospital, Vancouver, British Columbia, Canada"},{"name":"Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vicky","family":"Li","sequence":"additional","affiliation":[{"name":"Centre for Heart Lung Innovation, St. Paul\u2019s Hospital, Vancouver, British Columbia, Canada"},{"name":"Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Furquan","family":"Shaheen","sequence":"additional","affiliation":[{"name":"Centre for Heart Lung Innovation, St. Paul\u2019s Hospital, Vancouver, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chen Xi","family":"Yang","sequence":"additional","affiliation":[{"name":"Centre for Heart Lung Innovation, St. Paul\u2019s Hospital, Vancouver, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fanny","family":"Chu","sequence":"additional","affiliation":[{"name":"Centre for Heart Lung Innovation, St. Paul\u2019s Hospital, Vancouver, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Darren J.","family":"Cole","sequence":"additional","affiliation":[{"name":"School of Biomedical Engineering, Dalhousie University, Halifax, Nova Scotia, Canada; 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