title: Immunological responses against human papilloma virus and human papilloma virus induced laryngeal cancer.
abstract: OBJECTIVE
  This study aimed to clarify the local immune status in the larynx in the presence of infection or carcinogenesis associated with human papilloma virus.
  
  
  METHODS
  Cytological samples (for human papilloma virus detection) and laryngeal secretions (for immunoglobulin assessment) were obtained from 31 patients with laryngeal disease, during microscopic laryngeal surgery. On histological examination, 12 patients had squamous cell carcinoma, four had laryngeal papilloma and 15 had other benign laryngeal disease. Cytological samples were tested for human papilloma virus DNA using the Hybrid Capture 2 assay.
  
  
  RESULTS
  High risk human papilloma virus DNA was detected in 25 per cent of patients (three of 12) with laryngeal cancer. Low risk human papilloma virus DNA was detected only in three laryngeal papilloma patients. The mean laryngeal secretion concentrations of immunoglobulins M, G and A and secretory immunoglobulin A in human papilloma virus DNA positive patients were more than twice those in human papilloma virus DNA negative patients. A statistically significant difference was observed between the secretory immunoglobulin A concentrations in the two groups. Patients with laryngeal cancer had higher laryngeal secretion concentrations of each immunoglobulin type, compared with patients with benign laryngeal disease. The study assessed the mean laryngeal secretion concentrations of each immunoglobulin type in the 12 laryngeal cancer patients, comparing human papilloma virus DNA positive patients (n = 3) and human papilloma virus DNA negative patients (n = 9); the mean concentrations of immunoglobulins M, G and A and secretory immunoglobulin A tended to be greater in human papilloma virus DNA positive cancer patients, compared with human papilloma virus DNA negative cancer patients.
  
  
  CONCLUSIONS
  These results suggest that the local laryngeal immune response is activated by infection or carcinogenesis due to human papilloma virus. The findings strongly suggest that secretory IgA has inhibitory activity against infection or carcinogenesis associated with human papilloma virus in the larynx.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Kurume University School of Medicine, Kurume, Japan. yonekawa@med.kurume-u.ac.jp
authors.forename: Shun-ichi
authors.initials: S
authors.lastname: Chitose
authors.forename: T
authors.initials: T
authors.lastname: Sakazaki
authors.forename: T
authors.initials: T
authors.lastname: Ono
authors.forename: T
authors.initials: T
authors.lastname: Kurita
authors.forename: H
authors.initials: H
authors.lastname: Mihashi
authors.forename: T
authors.initials: T
authors.lastname: Nakashima
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D052685:Alphapapillomavirus / Q000235:genetics / Q000276:immunology*; D002294:Carcinoma, Squamous Cell / Q000276:immunology / Q000821:virology; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007136:Immunoglobulins / Q000276:immunology*; D007818:Laryngeal Diseases / Q000276:immunology / Q000821:virology; D007822:Laryngeal Neoplasms / Q000276:immunology / Q000821:virology; D007830:Larynx / Q000276:immunology / Q000821:virology; D008297:Male; D008875:Middle Aged; D010212:Papilloma / Q000276:immunology / Q000821:virology; D055815:Young Adult
chemical_list: D007136:Immunoglobulins