Relationship between gelatinases and bone turnover in the healing bone defect

Richard A Reinhardt, Hsi Ming Lee, Marian Schmid, Jeffrey B Payne, Lorne Golub

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Purpose: The aim of this pilot study was to determine the relationship between gelatinase (MMP-9 and MMP-2) markers of soft tissue inflammation/ turnover at the bone/soft tissue interface and bone turnover (osteocalcin [OC], pyridinoline cross-linked carboxyl-terminal telopeptide of type 1 collagen [ICTP], and bone fill) during healing of an alveolar bone defect. Materials and Methods: Ten subjects undergoing oral surgery had a 5 × 5-mm trephine defect created on an edentulous ridge and were sampled at the bone/soft tissue interface at baseline (prior to flap reflection), 2 weeks and 12 weeks postsurgery, using a novel bone wash device. Recovered irrigants were analyzed for MMP-9 and MMP-2 by gelatin zymography, OC and ICTP with radioimmunoassays, and albumin (ALB; to normalize markers for blood content) with a sandwich enzyme-linked immunosorbent assay. Bone fill at 12 weeks was analyzed by radiographic absorptiometry. Results: All markers of enzymatic activity and bone turnover varied significantly across time (P ≤ .03), with bone turnover markers OC and ICTP decreasing between baseline and 2 weeks, and MMP-9 and MMP-2 increased. Measures generally returned to near baseline levels after 12 weeks. MMP-9 versus MMP-2 (r = 0.97, P < .0001) and OC versus ICTP (r = 0.38, P = .048) were correlated with each other, while MMP-9 and MMP-2 were negatively correlated with ICTP (r = -0.48, P = .011 and r = -0.62, P = .006, respectively). MMP-9 was negatively correlated with subsequent bone fill (r = -0.63, P = .07). Conclusions: Bone wash sampling showed that gelatinase activity at 2 weeks following creation of an alveolar defect appeared to decrease bone turnover and eventual bone fill, suggesting benefits for anti-MMP therapy during wound healing.

Original languageEnglish (US)
Pages (from-to)1455-1460
Number of pages6
JournalJournal of Oral and Maxillofacial Surgery
Volume63
Issue number10
DOIs
StatePublished - Oct 1 2005

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Gelatinases
Bone Remodeling
Matrix Metalloproteinases
Bone and Bones
Osteocalcin
Oral Surgery
Gelatin
Collagen Type I
Wound Healing
Radioimmunoassay
Albumins

ASJC Scopus subject areas

  • Surgery
  • Oral Surgery
  • Otorhinolaryngology

Cite this

Relationship between gelatinases and bone turnover in the healing bone defect. / Reinhardt, Richard A; Lee, Hsi Ming; Schmid, Marian; Payne, Jeffrey B; Golub, Lorne.

In: Journal of Oral and Maxillofacial Surgery, Vol. 63, No. 10, 01.10.2005, p. 1455-1460.

Research output: Contribution to journalArticle

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AB - Purpose: The aim of this pilot study was to determine the relationship between gelatinase (MMP-9 and MMP-2) markers of soft tissue inflammation/ turnover at the bone/soft tissue interface and bone turnover (osteocalcin [OC], pyridinoline cross-linked carboxyl-terminal telopeptide of type 1 collagen [ICTP], and bone fill) during healing of an alveolar bone defect. Materials and Methods: Ten subjects undergoing oral surgery had a 5 × 5-mm trephine defect created on an edentulous ridge and were sampled at the bone/soft tissue interface at baseline (prior to flap reflection), 2 weeks and 12 weeks postsurgery, using a novel bone wash device. Recovered irrigants were analyzed for MMP-9 and MMP-2 by gelatin zymography, OC and ICTP with radioimmunoassays, and albumin (ALB; to normalize markers for blood content) with a sandwich enzyme-linked immunosorbent assay. Bone fill at 12 weeks was analyzed by radiographic absorptiometry. Results: All markers of enzymatic activity and bone turnover varied significantly across time (P ≤ .03), with bone turnover markers OC and ICTP decreasing between baseline and 2 weeks, and MMP-9 and MMP-2 increased. Measures generally returned to near baseline levels after 12 weeks. MMP-9 versus MMP-2 (r = 0.97, P < .0001) and OC versus ICTP (r = 0.38, P = .048) were correlated with each other, while MMP-9 and MMP-2 were negatively correlated with ICTP (r = -0.48, P = .011 and r = -0.62, P = .006, respectively). MMP-9 was negatively correlated with subsequent bone fill (r = -0.63, P = .07). Conclusions: Bone wash sampling showed that gelatinase activity at 2 weeks following creation of an alveolar defect appeared to decrease bone turnover and eventual bone fill, suggesting benefits for anti-MMP therapy during wound healing.

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