Unlabelled: Oral lichen planus and lichenoid reactions are autoimmune type inflammatory conditions of the oral mucosa with similar clinical and histological characteristics. Recent data suggest that oral lichenoid reactions (OLR) present a greater percentage of malignant transformation than oral lichen planus (OLP).
Objective: To compare the expression of bcl-2 and COX-2 in OLP and OLR.
Methods: The study population consisted of 65 cases; 34 cases diagnosed as OLR and 31 as OLP. A retrospective study was done, and bcl-2 and COX-2 expression was semiquantitatively analysed.
Results: Fifty-three per cent (18/34) of the ORL samples tested positive for COX-2, whereas in the OLP group, 81% of the samples (25/31) immunostained positive for COX-2. The Fisher's exact test for the expression of COX-2 revealed that there are significant differences between the two groups, P = 0.035. With respect to the expression of the bcl-2 protein, 76% (26/34) of the samples were positive in OLR, while 97% (30/31) were positive in the group with OLP. The Fisher's exact test for the expression of bcl-2 revealed that there are significant statistical differences between the two groups, P = 0.028.
Conclusions: The expression of bcl-2 and COX-2 was more commonly expressed in OLP when compared with OLR.
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| http://dx.doi.org/10.3332/ecancer.2014.411 | DOI Listing |
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