title: Cyclooxygenase-2 and c-erbB-2 expression in colorectal carcinoma assessed using tissue microarrays.
abstract: The c-erbB-2 and cyclooxygenase (COX) pathways are involved in the pathogenesis of colorectal carcinoma, but the relationship is not fully understood. This study evaluated the significance of c-erbB-2, COX-2, and Ki-67 protein expression in 185 patients with colorectal carcinoma using tissue microarrays. Only one case expressed cerbB-2 protein. COX-2 expression was noted in 166 of 176 cases (94.3%), and the Ki-67 expression rate averaged 5.9%. There was no relationship among c-erbB-2, COX-2, and Ki-67 protein expression, and COX-2 protein expression was not related to tumor stage, differentiation, size, depth of invasion, lymphatic or vascular invasion, or patient survival. While the contribution of c-erbB-2 to colorectal carcinogenesis may be of little quantity, COX-2 may be deeply involved in colorectal carcinogenesis.
authors.affiliation: Department of Pathology, Sanggye Paik Hospital, Inje University School of Medicine, Seoul, Korea. pck2973@unitel.co.kr
authors.forename: Jung Yeon
authors.initials: JY
authors.lastname: Kim
authors.forename: Sung-Jig
authors.initials: SJ
authors.lastname: Lim
authors.forename: Kyeongmee
authors.initials: K
authors.lastname: Park
mesh_terms: D015179:Colorectal Neoplasms / Q000201:enzymology / Q000378:metabolism* / Q000473:pathology; D051546:Cyclooxygenase 2; D005260:Female; D006801:Humans; D007527:Isoenzymes / Q000378:metabolism*; D019394:Ki-67 Antigen / Q000378:metabolism; D008297:Male; D008565:Membrane Proteins; D011451:Prostaglandin-Endoperoxide Synthases / Q000378:metabolism*; D018719:Erb-b2 Receptor Tyrosine Kinases / Q000378:metabolism*
chemical_list: D051546:Cyclooxygenase 2; D007527:Isoenzymes; D019394:Ki-67 Antigen; D008565:Membrane Proteins; D011451:Prostaglandin-Endoperoxide Synthases; D018719:Erb-b2 Receptor Tyrosine Kinases; C496540:PTGS2 protein, human