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Boston - American Association for Thoracic Surgery

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AMERICAN ASSOCIATION FOR THORACIC SURGERYF18. Matrix Metalloproteinase Expression in Adenocarcinoma andSquamous Cell Carcinoma of the LungSonam A. Shah, 1 John S. Ikonomidis, 2* Robert E. Stroud, 2 Eileen I. Chang, 2Francis G. Spinale, 2* Carolyn E. Reed 2*1. Medical University of South Carolina, College of Medicine, Charleston, SC,USA; 2. Medical University of South Carolina, Department of <strong>Surgery</strong>,Charleston, SC, USAInvited Discussant: David R. JonesOBJECTIVE: Non-small cell lung cancer (NSCLC) is the leading cause of cancerdeaths. Matrix metalloproteinases (MMPs) are an endogenous proteinase systemshown to facilitate cancer invasion and metastasis. The purpose of this study wasto evaluate MMP expression in the two most common histologies of NSCLC,squamous cell (SCC) and adenocarcinoma (AC), relative to normal lung tissue.METHODS: A comprehensive MMP multiplex plate analysis was run on homogenatesof 23 SCC and 22 AC surgically resected tumor specimens and compared(pg of MMP/mg tissue) to MMP concentrations in adjacent normal tissue. A subsetanalysis of patients who recurred versus those who did not was per<strong>for</strong>med.TUESDAYMorningMMP Levels: Squamous Cell Carcinoma vs. Adenocarcinoma.MMP-1: SCC: 30.8* ± 9.3, AC: 6.8 ± 2.1; MMP-2: SCC: 128.2* ± 30.1,AC: 52.1 ± 8.1; MMP-3: SCC: 13.9* ± 4.3, AC: 0.9 ± 0.2; MMP-8:SCC: 396.0* ± 93.5, AC: 31.2 ± 8.6; MMP-9: SCC: 209.9* ± 19.5, AC:65.1 ± 16.2; MMP-12: SCC: 24.7* ± 5.7, AC: 4.9 ± 1.2; MMP-13: SCC:3.4* ± 1.9, AC: 1.4 ± 0.4, *p < 0.05. All values in pg of MMP/mg tissue.* AATS Member149

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