alexa Pathogenesis of oral lichen planus--a review.
Dentistry

Dentistry

JBR Journal of Interdisciplinary Medicine and Dental Science

Author(s): Roopashree MR, Gondhalekar RV, Shashikanth MC, George J, Thippeswamy SH,

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Abstract Oral lichen planus (OLP) is a T-cell-mediated chronic inflammatory oral mucosal disease of unknown etiology. OLP presents as white striations, white papules, white plaques, erythema, erosions, or blisters affecting predominantly the buccal mucosa, tongue and gingiva. Both antigen-specific and non-specific mechanisms are hypothesized to be involved in the pathogenesis of oral lichen planus (OLP). Antigen-specific mechanisms in OLP include antigen presentation by basal keratinocytes and antigen-specific keratinocyte killing by CD8(+) cytotoxic T cells. Non-specific mechanisms include mast cell degranulation and matrix metalloproteinase activation in OLP lesions. These mechanisms may combine to cause T cell accumulation in the superficial lamina propria, basement membrane disruption, intra-epithelial T cell migration and keratinocyte apoptosis in OLP. The various hypotheses proposed for pathogenesis of oral lichen planus are discussed in this review. © 2010 John Wiley & Sons A/S. This article was published in J Oral Pathol Med and referenced in JBR Journal of Interdisciplinary Medicine and Dental Science

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