title: Elevated levels of collagen cross-link residues in gingival tissues and crevicular fluid of teeth with periodontal disease.
abstract: Lysylpyridinoline (LP) and hydroxylysylpyridinoline (HP) are collagen cross-link residues. Lysylpyridinoline is present in most tissues, whereas LP is present mainly in mineralized tissue. Both are elevated in tissue with increased collagen resorption. The purpose of this investigation was to assess if the concentrations of LP and HP are elevated in gingiva and gingival crevicular fluid (GCF) of teeth with advanced periodontitis (AP). We investigated human gingival biopsies of healthy teeth (n = 19) and teeth with AP (n = 43) in 49 individuals. Samples of GCF from 54 teeth with AP were collected in seven patients and compared with samples from 11 patients with experimentally induced gingivitis. Levels of LP and HP were measured by HPLC and fluorescence detection. Gingival concentrations of HP but not LP around teeth with advanced periodontitis were significantly elevated compared with teeth with healthy periodontium. While significant amounts of HP and LP were measurable in the GCF of teeth with AP, no HP and LP was identified 3 months following non-surgical periodontal therapy of the teeth or in fluid from teeth subjected to experimentally induced gingivitis. Elevated concentrations of HP and LP in GCF may serve as indicators of ongoing destruction of periodontal tissues and alveolar bone in advanced periodontitis.
authors.affiliation: Department of Conservative Dentistry and Periodontology, University of Bonn, Welschonnenstrasse 17, D-53111 Bonn, Germany. jepsen@uni-bonn.de
authors.forename: Søren
authors.initials: S
authors.lastname: Jepsen
authors.forename: Ingo N G
authors.initials: IN
authors.lastname: Springer
authors.forename: Andreas
authors.initials: A
authors.lastname: Buschmann
authors.forename: Jürgen
authors.initials: J
authors.lastname: Hedderich
authors.forename: Yahya
authors.initials: Y
authors.lastname: Açil
mesh_terms: D000328:Adult; D000596:Amino Acids / Q000032:analysis / Q000378:metabolism; D015415:Biomarkers; D016022:Case-Control Studies; D002851:Chromatography, High Pressure Liquid; D003094:Collagen / Q000378:metabolism*; D005260:Female; D005881:Gingiva / Q000737:chemistry; D005883:Gingival Crevicular Fluid / Q000737:chemistry; D006801:Humans; D008297:Male; D010518:Periodontitis / Q000378:metabolism* / Q000473:pathology*
chemical_list: D000596:Amino Acids; D015415:Biomarkers; C015484:pyridinoline; C036020:deoxypyridinoline; D003094:Collagen