Lactation, galactorrhea, and timing of reduction mammaplasty.
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Biomedical subjects
Publications and source records attributed to Ozlem Gundeslioglu.
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Recently, cyclooxygenase-2 (COX-2) inhibitor therapy has emerged as a possible new approach to the prevention and treatment of colorectal cancer (CRC). The COX enzymes (COX-1 and COX-2) are key enzymes of prostaglandin (PG) biosynthesis and are overexpressed in approximately 80% of human CRCs. Presumably, bioactive lipid products of COX, such as PGE(2), are responsible for some of the pro-neoplastic effects mediated by this enzyme. The early effects of COX-2-derived PGE(2) are in part mediated by the epidermal growth factor receptor (EGFR). Selenomethionine decreases COX-2 protein and PGE(2) levels. Cetuximab is a chimeric IgG1 monoclonal antibody that binds to EGFR with high specificity thus blocking ligand-induced phosphorylation of EGFR. Cetuximab has clinically significant activity when given alone or in combination with irinotecan in patients with irinotecan-refractory CRC. We suggest that selenium supplementation by decreasing the COX-2 protein and PGE-2 levels in cancer cells may increase efficacy of cetuximab in advanced CRC patients.
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