PMID- 26515234 OWN - NLM STAT- MEDLINE DCOM- 20160523 LR - 20181113 IS - 1365-2613 (Electronic) IS - 0959-9673 (Print) IS - 0959-9673 (Linking) VI - 96 IP - 5 DP - 2015 Oct TI - Immunohistochemical expression of matrix metalloproteinase-1, matrix metalloproteinase-2 and matrix metalloproteinase-9, myofibroblasts and Ki-67 in actinic cheilitis and lip squamous cell carcinoma. PG - 311-8 LID - 10.1111/iep.12140 [doi] AB - Matrix metalloproteinases (MMPs), myofibroblasts (MFs) and epithelial proliferation have key roles in neoplastic progression. In this study immunoexpression of MMP-1, MMP-2 and MMP-9, presence of MFs and the epithelial proliferation index were investigated in actinic cheilitis (AC), lip squamous cell carcinoma (LSCC) and mucocele (MUC). Thirty cases of AC, thirty cases of LSCC and twenty cases of MUC were selected for immunohistochemical investigation of the proteins MMP-1, MMP-2, MMP-9, alpha-smooth muscle actin (alpha-SMA) and Ki-67. The MMP-1 expression in the epithelial component was higher in the AC than the MUC and LSCC. In the connective tissue, the expression was higher in the LSCC. MMP-2 showed lower epithelial and stromal immunostaining in the LSCC when compared to the AC and MUC. The epithelial staining for MMP-9 was higher in the AC when compared to the LSCC. However, in the connective tissue, the expression was lower in the AC compared to other lesions. The cell proliferation rate was increased in proportion to the severity of dysplasia in the AC, while in the LSCC it was higher in well-differentiated lesions compared to moderately differentiated. There were no statistically significant differences in number of MFs present in the lesions studied. The results suggest that MMPs could affect the biological behaviour of ACs and LSCCs inasmuch as they could participate in the development and progression from premalignant lesions to malignant lesions. CI - (c) 2015 The Authors. International Journal of Experimental Pathology (c) 2015 International Journal of Experimental Pathology. FAU - Bianco, Bianca C AU - Bianco BC AD - Federal University of Santa Catarina, Florianopolis, Brazil. FAU - Scotti, Fernanda M AU - Scotti FM AD - Federal University of Santa Catarina, Florianopolis, Brazil. FAU - Vieira, Daniella S C AU - Vieira DS AD - Pathology Department, Federal University of Santa Catarina, Florianopolis, Brazil. FAU - Biz, Michelle T AU - Biz MT AD - Morphology Sciences Department and Dentistry Graduate Program, Federal University of Santa Catarina, Florianopolis, Brazil. FAU - Castro, Renata G AU - Castro RG AD - Dentistry Department, Federal University of Santa Catarina, Florianopolis, Brazil. FAU - Modolo, Filipe AU - Modolo F AUID- ORCID: 0000-0002-5395-0486 AD - Pathology Department and Dentistry Graduate Program, Federal University of Santa Catarina, Florianopolis, Brazil. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20151030 PL - England TA - Int J Exp Pathol JT - International journal of experimental pathology JID - 9014042 RN - 0 (Ki-67 Antigen) RN - EC 3.4.24.- (Matrix Metalloproteinases) RN - EC 3.4.24.24 (Matrix Metalloproteinase 2) RN - EC 3.4.24.35 (Matrix Metalloproteinase 9) RN - EC 3.4.24.7 (Matrix Metalloproteinase 1) RN - Actinic cheilitis SB - IM MH - Carcinoma, Squamous Cell/metabolism/*pathology MH - Cheilitis/metabolism/*pathology MH - Humans MH - Immunohistochemistry MH - Ki-67 Antigen/biosynthesis MH - Lip Neoplasms/metabolism/*pathology MH - Matrix Metalloproteinase 1/analysis/biosynthesis MH - Matrix Metalloproteinase 2/analysis/biosynthesis MH - Matrix Metalloproteinase 9/analysis/biosynthesis MH - Matrix Metalloproteinases/analysis/*biosynthesis MH - Myofibroblasts/*pathology MH - Precancerous Conditions/metabolism/*pathology PMC - PMC4693555 OTO - NOTNLM OT - actinic cheilitis OT - cell proliferation OT - immunohistochemistry OT - lip cancer OT - matrix metalloproteinase-1 OT - matrix metalloproteinase-2 OT - matrix metalloproteinase-9 OT - myofibroblasts OT - oral cancer OT - squamous cell carcinoma EDAT- 2015/10/31 06:00 MHDA- 2016/05/24 06:00 PMCR- 2016/10/01 CRDT- 2015/10/31 06:00 PHST- 2015/05/27 00:00 [received] PHST- 2015/07/18 00:00 [accepted] PHST- 2015/10/31 06:00 [entrez] PHST- 2015/10/31 06:00 [pubmed] PHST- 2016/05/24 06:00 [medline] PHST- 2016/10/01 00:00 [pmc-release] AID - IEP12140 [pii] AID - 10.1111/iep.12140 [doi] PST - ppublish SO - Int J Exp Pathol. 2015 Oct;96(5):311-8. doi: 10.1111/iep.12140. Epub 2015 Oct 30.