Concomitant upregulation of matrix metalloproteinase-2 in lesions and circulating plasma of oral lichen planus
Article Outline
Background/purpose
Oral lichen planus (OLP) is a chronic inflammatory disorder characterized by a T cell-mediated immune response against epithelial cells. Matrix metalloproteinases (MMPs) are an important group of zinc enzymes and are thought to play an important role in the degradation of components of the extracellular matrix. The aim of this study was to assess the expression of MMP-2 and MMP-9 in both tissue specimens and circulating plasma.
Materials and methods
Twelve cases of OLP were collected. In addition, six cases with chronic inflammation and six normal subjects were also recruited. Oral tissue specimens were collected for measurement of MMPs by immunohistochemistry, and sera prepared from peripheral blood were used for gelatin zymography to determine MMP levels in plasma.
Results
The level of MMP-2 in patients with OLP was significantly higher than that in the other two groups, both in tissues and sera (P < 0.0001). However, there was no difference in the expression of MMP-9 among these groups.
Conclusion
MMP-2 overexpression in OLP is consistent with its upregulation in peripheral serum. This result also indicates that MMP-2 might play a role in the pathogenesis of OLP.
Key Words: gelatin zymography , immunohistochemistry , matrix metalloproteinases , oral lichen planus , serum
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References
- . Disease mechanisms in oral lichen planus: a possible role for autoimmunity . Aust J Dermatol . 1993;34:63–69
- . Immunologic aspects of dermal and oral lichen planus: a review . Oral Surg Oral Med Oral Pathol Oral Radiol Endod . 1997;83:358–366
- . Oral lichen planus, part I: Epidemiology, clinics, etiology, immunopathogeny, and diagnosis . Skinmed . 2003;2:342–347
- . Oral lichen planus: a clinical and morpho-metric study of oral lesions in relation to clinical presentation . Braz Dent J . 2004;15:9–12
- . The pathogenesis of oral lichen planus . Crit Rev Oral Biol Med . 2002;13:350–365
- . Alteration in peripheral blood mononuclear cell function and serum cytokines in oral lichen planus . J Oral Pathol Med . 1994;23:28–35
- . Matrix metalloproteinases in immunity . J Immunol . 1996;156:1–4
- . Matrix met-alloproteinase 2 and matrix metalloproteinase 9 expression in human oral squamous cell carcinoma and the effect of protein kinase C inhibitors: preliminary observations . Oral Surg Oral Med Oral Pathol Oral Radiol Endod . 2003;95:710–716
- . Basement membrane changes in oral lichen planus . Proc Finn Dent Soc . 1989;85:119–124
- . Purification and characterization of a murine basement membrane collagen degrading enzyme secreted by metastatic tumor cells . J Biol Chem . 1983;258:3058–3063
- . Matrix metal-loproteinases and their inhibitors in oral lichen planus . J Cutan Pathol . 2001;28:72–82
- . Oral lichen planus: the evidence regarding potential malignant transformation . J Oral Pathol . 1978;7:1–7
- . Regulation of matrix metallo-proteinases-2 production by cytokines and pharmacological agents in human pulp cell cultures . J Endod . 2001;27:679–682
- . Altered expression of basement membrane proteins and their integrin receptors in lichen planus: possible pathogenetic role of gelatinases A and B . Lab Invest . 1996;74:1091–1104
- . Synergy between a plasminogen cascade and MMP-9 in autoimmune disease . J Clin Invest . 2005;115:825–828
- . A comparison of the pro-inflammatory NF-kB-dependent cytokines: TNF-alpha, IL-1-alpha, IL-6, and IL-8 in different oral fluids from oral lichen planus patients . Clin Immunol . 2005;114:278–283
- . ERK1/2 mediates TNF-a-induced matrix metalloproteinase-9 expression in human vascular smooth muscle cells via the regulation of NF-kb and AP-1: involvement of the Ras dependent pathway . J Cell Physiol . 2004;198:417–427
- . Membrane type 1 matrix metalloproteinase expression in human atherosclerotic plaques: evidence for activation by proinflammatory mediators . Circulation . 1999;99:3103–3109
- Apoptosis of oral epithelial cells in oral lichen planus caused by upregulation of BMP-4 . J Oral Pathol Med . 2006;35:37–45
PII: S1991-7902(09)60002-7
doi:10.1016/S1991-7902(09)60002-7
© 2009 Association for Dental Sciences of The Republic of China. Published by Elsevier Inc. All rights reserved.
