Pancreatic cancer is an aggressive and lethal disease that affects especially older population. Its more relevant tumor marker is CA 19-9 (carbohydrate antigen 19-9), although it can be elevated in others clinical situations, like cholangitis and cholestasis. Otherwise, a small people subset, like our patient, do not produce this tumor marker, as on blood as in the tumor, because they are incap...

PURPOSE In Lewis rats, S-antigen-induced intraocular inflammation, which occurs initially in the retina, is mediated by T cells requiring major histocompatibility complex (MHC)-restricted antigen presentation. In such organ-specific inflammation, antigen presentation may take place at the site of the initial inflammatory response. In the present study an attempt was made to determine the presen...

OBJECTIVE The aim of this study was to analyze the correlation and clinical significance between the expression of Mucin-1 (MUC1) and the Lewis y antigen with chemoresistance in ovarian epithelial cancers. METHODS Ovarian cancer patients (n = 92) treated at our hospital from May 2005 to July 2009 were divided, according to their treatment and follow-up outcomes, into a resistant group (n = 37...

MUC1 is a type I transmembrane glycoprotein and is overexpressed in various epithelial tumor tissues. Some researchers have demonstrated that the glycosylation status of MUC1 can affect MUC1-mediated tumor growth and cell differentiation. In our previous study, we proved that the abilities of cell proliferation, adhesion, invasion and metastasis, and drug resistance were enhanced in ovarian can...

OBJECTIVE To measure Lewis y and integrin α(5)β(1) expression in epithelial ovarian carcinoma and to correlate the levels of these molecules with ovarian carcinoma chemotherapy and prognosis. METHODS The study population included 34 ovarian carcinoma patients with chemotherapeutic drug-resistance, six partially drug-sensitive cases, and 52 drug-sensitive cases (92 total). Immunochemistry was ...

The Lewis blood group system comprises two main carbohydrate antigens, Le’ and Leb. Lewis typing has traditionally been based on serologic determinations using erythrocytes and saliva. Several recent studies have demonstrated that erythrocyte Lewis phenotype may change during pregnancy or disease, and inappropriate Lewis antigens have been found in both normal and neoplastic tissue. To evaluate...

The Lewis blood group system comprises two main carbohydrate antigens, Le’ and Leb. Lewis typing has traditionally been based on serologic determinations using erythrocytes and saliva. Several recent studies have demonstrated that erythrocyte Lewis phenotype may change during pregnancy or disease, and inappropriate Lewis antigens have been found in both normal and neoplastic tissue. To evaluate...

The Lewis blood group system comprises two main carbohydrate antigens, Le’ and Leb. Lewis typing has traditionally been based on serologic determinations using erythrocytes and saliva. Several recent studies have demonstrated that erythrocyte Lewis phenotype may change during pregnancy or disease, and inappropriate Lewis antigens have been found in both normal and neoplastic tissue. To evaluate...

The expression of alpha(1,2) fucosyltransferases that catalyze the fucose transfer to galactose of the N-acetyl(iso)lactosamine chain is decreased in human metastatic pancreatic cancer cells. alpha(2,3) Sialyltransferases catalyze the transfer of sialic acid to the same substrate to form, with alpha(1,3/1,4) fucosyltransferases, sialyl-Lewis a and sialyl-Lewis x determinants on cell surface tha...