{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,15]],"date-time":"2026-03-15T19:46:06Z","timestamp":1773603966581,"version":"3.50.1"},"reference-count":41,"publisher":"Oxford University Press (OUP)","issue":"7","license":[{"start":{"date-parts":[[2008,7,1]],"date-time":"2008-07-01T00:00:00Z","timestamp":1214870400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2008,7,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Early diagnosis of the onset of osteoporosis is key to the delivery of effective therapy. Biochemical markers of bone turnover provide a means of evaluating skeletal dynamics that complements static measurements of BMD by DXA. Conventional clinical measurements of bone turnover, primarily the estimation of collagen and its breakdown products in the blood or urine, lack both sensitivity and specificity as a reliable diagnostic tool. As a result, improved tests are needed to augment the use of BMD measurements as the principle diagnostic modality. In this study, the serum proteome of 58 postmenopausal women with high or low\/normal bone turnover (training set) was analyzed by surface enhanced laser-desorption\/ionization time-of-flight mass spectrometry, and a diagnostic fingerprint was identified using a variety of statistical and machine learning tools. The diagnostic fingerprint was validated in a separate distinct test set, consisting of serum samples from an additional 59 postmenopausal women obtained from the same Mayo cohort, with a gap of 2 yr. Specific protein peaks that discriminate between postmenopausal patients with high or low\/normal bone turnover were identified and validated. Multiple supervised learning approaches were able to classify the level of bone turnover in the training set with 80% sensitivity and 100% specificity. In addition, the individual protein peaks were also significantly correlated with BMD measurements in these patients. Four of the major discriminatory peaks in the diagnostic profile were identified as fragments of interalpha-trypsin-inhibitor heavy chain H4 precursor (ITIH4), a plasma kallikrein-sensitive glycoprotein that is a component of the host response system. These data suggest that these serum protein fragments are the serum-borne reflection of the increased osteoclast activity, leading to the increased bone turnover that is associated with decreasing BMD and presumably an increased risk of fracture. In conjunction with the identification of the individual proteins, this protein fingerprint may provide a novel approach to evaluate high bone turnover states.<\/jats:p>","DOI":"10.1359\/jbmr.080235","type":"journal-article","created":{"date-parts":[[2008,2,26]],"date-time":"2008-02-26T14:05:02Z","timestamp":1204034702000},"page":"1106-1117","source":"Crossref","is-referenced-by-count":42,"title":["Serum Biomarker Profile Associated With High Bone Turnover and BMD in Postmenopausal Women"],"prefix":"10.1093","volume":"23","author":[{"given":"Sudeepa","family":"Bhattacharyya","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery, Center for Orthopaedic Research, Barton Research Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eric R","family":"Siegel","sequence":"additional","affiliation":[{"name":"Department of Biostatistics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sara J","family":"Achenbach","sequence":"additional","affiliation":[{"name":"Department of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, Minnesota, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sundeep","family":"Khosla","sequence":"additional","affiliation":[{"name":"Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Larry J","family":"Suva","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Center for Orthopaedic Research, Barton Research Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2009,12,4]]},"reference":[{"key":"2024020319520501200_bib1","volume-title":"Surgeon 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