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The aim of this work was to evaluate the cytosolic contents of hyaluronic acid (HA) and cathepsin D (CatD) in gastric carcinomas and their possible relationships with the clinicopathological parameters of the tumors. Our study demonstrated a wide variability in the cytosolic levels of HA (mean +/- SEM: 3748 +/- 411 ng/mg protein) and cathepsin D (52 +/- 4 pmol/mg protein) in the tumors of 78 gastric cancer patients. In addition, the tumoral contents of HA and CatD were significantly higher (p<0.005) in diffuse type (HA: 6027 +/- 1099 ng/mg protein; CatD: 75 +/- 13 pmol/mg protein) than in intestinal type (HA: 2735 +/- 242 ng/mg protein; CatD: 42 +/- 3 pmol/mg protein) carcinomas. These data suggest that both markers may contribute to the biological characterization of gastric carcinomas.

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