PMID- 21342273 OWN - NLM STAT- MEDLINE DCOM- 20110822 LR - 20110412 IS - 1600-0714 (Electronic) IS - 0904-2512 (Linking) VI - 40 IP - 5 DP - 2011 May TI - Distinct expression of perforin and granzyme B in lip and oral cavity squamous cell carcinoma. PG - 380-4 LID - 10.1111/j.1600-0714.2011.01014.x [doi] AB - BACKGROUND: Perforin and granzyme B (GB) are the main constituents of cytotoxic T-lymphocyte granules, and they have important roles in preventing the initiation and progression of cancer. METHODS: The aim of this study was to compare the expression of CD8(+) /perforin(+) double-staining and GB(+) cells, by immunohistochemistry, in primary oral cavity squamous cell carcinoma (OCSCC), lip squamous cell carcinoma (LSCC), non-dysplastic leukoplakia (LK), dysplastic LK, actinic cheilitis (AC), oral lichen planus (LP) and normal oral mucosa. RESULTS: Our results showed a higher expression of CD8(+) /perforin(+) and GB(+) cells in LSCC when compared with the samples of OCSCC, non-dysplastic and dysplastic LK, AC, oral LP and normal oral mucosa. In addition, increased CD8(+) /perforin(+) and GB(+) cell numbers were observed in all pre-malignant lesions (non-dysplastic LK, dysplastic LK, AC) when compared with the control. CONCLUSIONS: Perforin and GB proteins may contribute to antitumoural immunity, leading to the direct killing of tumour cells; however, it seems to occur more effectively in LSCC than OCSCC. CI - (c) 2011 John Wiley & Sons A/S. FAU - Costa, Nadia Lago AU - Costa NL AD - Department of Stomatology (Oral Pathology), Dental School, Federal University of Goias, Goiania, Brazil. FAU - Goncalves, Andreia Souza AU - Goncalves AS FAU - Souza-Lima, Nathalia Caroline AU - Souza-Lima NC FAU - Jaime-Paiva, Luis Gustavo AU - Jaime-Paiva LG FAU - Junqueira-Kipnis, Ana Paula AU - Junqueira-Kipnis AP FAU - Silva, Tarcilia Aparecida AU - Silva TA FAU - Mendonca, Elismauro Francisco AU - Mendonca EF FAU - Batista, Aline Carvalho AU - Batista AC LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110222 PL - Denmark TA - J Oral Pathol Med JT - Journal of oral pathology & medicine : official publication of the International Association of Oral Pathologists and the American Academy of Oral Pathology JID - 8911934 RN - 126465-35-8 (Perforin) RN - EC 3.4.21.- (Granzymes) SB - IM MH - Adult MH - Aged MH - Apoptosis/physiology MH - Carcinoma, Squamous Cell/immunology/*metabolism MH - Case-Control Studies MH - Cheilitis/metabolism MH - Female MH - Granzymes/*biosynthesis MH - Humans MH - Leukoplakia, Oral/metabolism MH - Lichen Planus, Oral/metabolism MH - Lip Neoplasms/immunology/metabolism MH - Lymphocyte Count MH - Male MH - Middle Aged MH - Mouth Floor/immunology/metabolism MH - Mouth Mucosa/metabolism MH - Mouth Neoplasms/immunology/*metabolism MH - Perforin/*biosynthesis MH - Statistics, Nonparametric MH - T-Lymphocytes, Cytotoxic/chemistry/metabolism EDAT- 2011/02/24 06:00 MHDA- 2011/08/23 06:00 CRDT- 2011/02/24 06:00 PHST- 2011/02/24 06:00 [entrez] PHST- 2011/02/24 06:00 [pubmed] PHST- 2011/08/23 06:00 [medline] AID - 10.1111/j.1600-0714.2011.01014.x [doi] PST - ppublish SO - J Oral Pathol Med. 2011 May;40(5):380-4. doi: 10.1111/j.1600-0714.2011.01014.x. Epub 2011 Feb 22.