{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,16]],"date-time":"2026-07-16T12:47:41Z","timestamp":1784206061978,"version":"3.55.0"},"reference-count":52,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2014,11,25]],"date-time":"2014-11-25T00:00:00Z","timestamp":1416873600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Aase and Ejnar Danielsens\u00e2\u20ac\u2122 Foundation"},{"name":"Lions Club in Denmark"},{"name":"The Danish Council for Technology and Innovation","award":["09-052174"],"award-info":[{"award-number":["09-052174"]}]},{"name":"The Danish National Advanced Technology Foundation"},{"name":"The Danish Rheumatic Association"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arthritis &amp; Rheumatology"],"published-print":{"date-parts":[[2014,12]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>To assess the association between pain mechanisms (sensitization) and biochemical markers for cartilage, bone, and inflammation in patients with knee pain.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The study group comprised 281 patients with different degrees of knee pain intensity and radiographic findings (using the Kellgren\/Lawrence [K\/L] scale). The following structurally related serologic biomarkers were measured in serum: high\u2010sensitivity C\u2010reactive protein (hsCRP), matrix metalloproteinase (MMP)\u2013mediated breakdown of CRP (CRPM), MMP\u2010mediated degradation of type I collagen (C1M), C2M, and C3M. Pressure\u2013pain thresholds (PPT) (peripheral and spreading sensitization), temporal summation of pain, and conditioning pain modulation (CPM) (with the latter 2 biomarkers representing generalized sensitization) were assessed. For each pain parameter, the patients were categorized as most sensitized or least sensitized.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Correlations were observed between the pain biomarkers PPT, temporal summation, and CPM and maximal pain intensity during the last 24 hours. Significant associations between most of the serologic biomarkers were observed. A high CRPM level was associated with centralized sensitization (temporal summation and CPM). None of the serologic markers correlated with the intensity or duration of knee pain, and only hsCRP correlated with the K\/L grade. The most\u2010sensitized group contained more women than men, and the least\u2010sensitized group contained more men than women.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>A platform of mechanistic pain biomarkers in combination with structure\u2010related serologic biomarkers provides new possibilities for understanding how osteoarthritis\u2010related structural features may be associated with pain and pain sensitization. This study showed significant correlations between central pain sensitization and CRPM as a possible measure for chronic inflammation. Future pain association studies should include biomarkers representing the local joint environment more specifically.<\/jats:p><\/jats:sec>","DOI":"10.1002\/art.38856","type":"journal-article","created":{"date-parts":[[2014,8,28]],"date-time":"2014-08-28T11:49:48Z","timestamp":1409226588000},"page":"3317-3326","source":"Crossref","is-referenced-by-count":83,"title":["Association Between Experimental Pain Biomarkers and Serologic Markers in Patients With Different Degrees of Painful Knee Osteoarthritis"],"prefix":"10.1002","volume":"66","author":[{"given":"Lars","family":"Arendt\u2010Nielsen","sequence":"first","affiliation":[{"name":"Aalborg University and C4Pain Aalborg Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas N.","family":"Eskehave","sequence":"additional","affiliation":[{"name":"Aalborg University and Center for Clinical and Basic Research Aalborg Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Line 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