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Volume 121, Issue 6, Pages 1339-1347 (December 2001)
Up-regulation of cyclooxygenase 2 gene expression correlates with tumor angiogenesis in human colorectal cancer Fabio Cianchi, Camillo Cortesini, Paolo Bechi, Ornella Fantappiè, Luca Messerini, Alfredo Vannacci, Iacopo Sardi, Gianna Baroni, Vieri Boddi, Roberto Mazzanti, Emanuela Masini Gastroenterology Volume 121, Issue 6, Pages (December 2001) DOI: /gast Copyright © 2001 American Gastroenterological Association Terms and Conditions
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Fig. 1 (A–C) Cyclooxygenase-2 (COX-2) immunostaining (250×). Representative cases of cancer specimens classified as grades 0, 1, and 2, respectively. Normal colonic epithelium adjacent to the tumor showed no staining for COX-2. Gastroenterology , DOI: ( /gast ) Copyright © 2001 American Gastroenterological Association Terms and Conditions
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Fig. 2 (A–C) VEGF immunostaining (250×). Representative cases of cancer tissue classified as grades 0, 1, and 2, respectively. Gastroenterology , DOI: ( /gast ) Copyright © 2001 American Gastroenterological Association Terms and Conditions
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Fig. 3 MVD (mean values ± SEM) related to COX-2 immunostaining grade. MVD increases as the extent of COX-2 staining increases (rs = 0.41, P = 0.02). Gastroenterology , DOI: ( /gast ) Copyright © 2001 American Gastroenterological Association Terms and Conditions
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Fig. 4 MVD (mean values ± SEM) related to VEGF immunostaining grade. MVD increases as the extent of VEGF staining increases (rs = 0.62, P = 0.002). Gastroenterology , DOI: ( /gast ) Copyright © 2001 American Gastroenterological Association Terms and Conditions
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Fig. 5 Western blot analysis. Expression of COX-1 and COX-2 proteins in representative paired tissues from tumor and adjacent normal mucosa. T, tumor; N, normal mucosa; Kda, kilodalton. Gastroenterology , DOI: ( /gast ) Copyright © 2001 American Gastroenterological Association Terms and Conditions
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Fig. 6 Northern blot analysis. Expression of COX-2 and VEGF mRNA in representative paired tissues from tumor and adjacent normal mucosa. T, tumor; N, normal mucosa; GAPDH, glyceraldehyde phosphate dehydrogenase. Gastroenterology , DOI: ( /gast ) Copyright © 2001 American Gastroenterological Association Terms and Conditions
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Fig. 7 PGE2 levels (mean values ± SEM) determined in tumor tissue and adjacent normal mucosa obtained from surgical specimens (P < ). Gastroenterology , DOI: ( /gast ) Copyright © 2001 American Gastroenterological Association Terms and Conditions
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Fig. 8 PGE2 levels (mean values ± SEM) in metastatic (stage III and IV) and nonmetastatic (stage I and II) tumors (P = 0.03). Gastroenterology , DOI: ( /gast ) Copyright © 2001 American Gastroenterological Association Terms and Conditions
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