title: [Study of spontaneous cytotoxic activity in laryngeal carcinoma: prognostic value].
abstract: The status of natural killer (NK) cell activity in peripheral blood, based on number and functional state, was studied in relation to the clinical and histopathologic stage of 52 patients with laryngeal carcinoma and in 23 healthy controls. The number of NK cells, estimated using CD16 and CD56 monoclonal antibodies, was similar in patients and controls and showed no relation to tumor size and nodal involvement. NK cell function did not show significant differences in spontaneous cytotoxic activity either overall or in relation to tumor size and the presence of palpable lymph nodes. However, cytotoxic activity was significantly lower in patients who had histologically confirmed nodal involvement. NK activity under 36% (the percentage of specific lysis at an effector:target dilution of 50:1) was suggested the probable presence of nodal metastases and was a highly sensitive and specific test. In patients with laryngeal carcinoma, NK-cell cytotoxic activity may be an independent prognostic parameter for evaluating cervical lymph node involvement.
authors.affiliation: Servicio de ORL., Clínica Puerta de Hierro, Universidad Autónoma, Madrid.
authors.forename: F M
authors.initials: FM
authors.lastname: González
authors.forename: J A
authors.initials: JA
authors.lastname: Vargas
authors.forename: J C
authors.initials: JC
authors.lastname: Gea-Banacloche
authors.forename: B
authors.initials: B
authors.lastname: Arellano
authors.forename: J
authors.initials: J
authors.lastname: Ruiz
authors.forename: J
authors.initials: J
authors.lastname: Vergara
authors.forename: A
authors.initials: A
authors.lastname: Durantez
mesh_terms: D000328:Adult; D000368:Aged; D000911:Antibodies, Monoclonal / Q000276:immunology; D000920:Antibody-Dependent Cell Cytotoxicity; D019002:CD56 Antigen / Q000276:immunology; D002294:Carcinoma, Squamous Cell / Q000276:immunology* / Q000473:pathology*; D002574:Cervical Vertebrae / Q000473:pathology; D005260:Female; D006801:Humans; D007694:Killer Cells, Natural / Q000276:immunology*; D007822:Laryngeal Neoplasms / Q000276:immunology* / Q000473:pathology*; D007830:Larynx / Q000276:immunology* / Q000473:pathology*; D008198:Lymph Nodes / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009362:Neoplasm Metastasis; D011379:Prognosis; D011446:Prospective Studies; D017452:Receptors, IgG / Q000276:immunology
chemical_list: D000911:Antibodies, Monoclonal; D019002:CD56 Antigen; D017452:Receptors, IgG
vernacular_title: Estudio de la actividad citotóxica espontánea en el carcinoma de laringe: valor pronóstico.