title: Up-regulation of the oligosaccharide sialyl LewisX: a new prognostic parameter in metastatic prostate cancer.
abstract: Metastatic prostate cancer has an unpredictable long-term prognosis. At present, there are few specific predictors to indicate the outcome for the individual patient. We have studied immunoreactivity for type-2 carbohydrate structures, known to be involved in various cell adhesion processes, in patients with metastatic prostate cancer. One group of patients (n = 26) did not progress within 3 years after orchiectomy, while another group of patients (n = 33) progressed within 1 year following castration and survived less than 2 years. Among the parameters studied, sialyl LewisX carbohydrate up-regulation was the only variable showing significant association with poor prognosis (P < 0.01). Sialyl LewisX discriminated between these two outcome groups with 71% predictability and 96% specificity. Our results indicate that up-regulation of sialyl LewisX is associated with hormonal-resistant, aggressive disease. This prognostic marker may, therefore, have an important role in selecting proper treatment for patients with metastatic prostate cancer.
authors.affiliation: Department of Pathology, Norwegian Radium Hospital, Oslo.
authors.forename: T
authors.initials: T
authors.lastname: Jørgensen
authors.forename: A
authors.initials: A
authors.lastname: Berner
authors.forename: O
authors.initials: O
authors.lastname: Kaalhus
authors.forename: K J
authors.initials: KJ
authors.lastname: Tveter
authors.forename: H E
authors.initials: HE
authors.lastname: Danielsen
authors.forename: M
authors.initials: M
authors.lastname: Bryne
mesh_terms: D000230:Adenocarcinoma / Q000737:chemistry* / Q000473:pathology; D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000032:analysis*; D002240:Carbohydrate Sequence; D006801:Humans; D007150:Immunohistochemistry; D016256:Lewis X Antigen / Q000032:analysis; D008297:Male; D008875:Middle Aged; D008969:Molecular Sequence Data; D009362:Neoplasm Metastasis; D009844:Oligosaccharides / Q000032:analysis* / Q000378:metabolism; D011237:Predictive Value of Tests; D011379:Prognosis; D011471:Prostatic Neoplasms / Q000737:chemistry* / Q000473:pathology; D000080506:Sialyl Lewis X Antigen; D015854:Up-Regulation / Q000502:physiology*
chemical_list: D014408:Biomarkers, Tumor; D016256:Lewis X Antigen; D009844:Oligosaccharides; D000080506:Sialyl Lewis X Antigen