title: Association of T cells and eosinophils with Staphylococcus aureus exotoxin A and toxic shock syndrome toxin 1 in nasal polyps.
abstract: BACKGROUND
  Staphylococcus aureus exotoxins (SEs) have been implicated in the pathogenesis of nasal polyps (NPs) in patients with chronic rhinosinusitis (CRS). The aim of this study was to identify the correlation between SEs and T cells in NPs.
  
  
  METHODS
  After a nasal smear culture, the nasal lavage fluid and NP tissue were obtained from 30 CRS with NP (CRSwNP) patients. The control samples were taken from 10 normal individuals. The presence of S. aureus exotoxin A (SEA) and toxic shock syndrome toxin 1 (TSST-1) was verified through a polymerase chain reaction (PCR) analysis and immunohistochemical staining. Immunohistochemical staining for CD4(+) and CD8(+) T cells was performed, followed by hematoxylin and eosin (H&E) staining for eosinophils.
  
  
  RESULTS
  The PCR analysis and immunohistochemical staining for SEA and TSST-1 showed a significantly higher expression in the NP group when compared with that in the control group. Furthermore, the number of T cells and eosinophils were notably increased in the NP group when compared with that in the control group. Significant correlation was observed between the results of the culture, PCR, and immunohistochemical staining in the NP group. Moreover, the number of T cells and eosinophils was significantly increased in the positive experimental groups, when compared with that in the control group.
  
  
  CONCLUSIONS
  Our results indicate that there was, indeed, some correlation between the expression of SE in the nasal cavity and the increased number of T cells and eosinophils in NPs.
authors.affiliation: Department of Otolaryngology Head and Neck Surgery, Gil Medical Center, Gachon University, School of Medicine, Incheon City, South Korea. kst2383@gilhospital.com
authors.forename: Seon Tae
authors.initials: ST
authors.lastname: Kim
authors.forename: Seung Won
authors.initials: SW
authors.lastname: Chung
authors.forename: Joo Hyun
authors.initials: JH
authors.lastname: Jung
authors.forename: Jong Su
authors.initials: JS
authors.lastname: Ha
authors.forename: Il Gyu
authors.initials: IG
authors.lastname: Kang
mesh_terms: D000328:Adult; D001426:Bacterial Proteins / Q000235:genetics / Q000276:immunology / Q000378:metabolism*; D001427:Bacterial Toxins / Q000235:genetics / Q000276:immunology / Q000378:metabolism; D015496:CD4-Positive T-Lymphocytes / Q000473:pathology; D018414:CD8-Positive T-Lymphocytes / Q000473:pathology; D002452:Cell Count; D002908:Chronic Disease; D004768:Enterotoxins / Q000235:genetics / Q000276:immunology / Q000378:metabolism; D004804:Eosinophils / Q000473:pathology; D005098:Exotoxins / Q000235:genetics / Q000276:immunology / Q000378:metabolism*; D005260:Female; D015964:Gene Expression Regulation, Bacterial; D006801:Humans; D008297:Male; D008875:Middle Aged; D009298:Nasal Polyps / Q000378:metabolism* / Q000473:pathology; D012220:Rhinitis / Q000276:immunology* / Q000382:microbiology* / Q000503:physiopathology; D012852:Sinusitis / Q000276:immunology* / Q000382:microbiology* / Q000503:physiopathology; D013211:Staphylococcus aureus / Q000235:genetics / Q000378:metabolism*; D018089:Superantigens / Q000235:genetics / Q000276:immunology / Q000378:metabolism
chemical_list: D001426:Bacterial Proteins; D001427:Bacterial Toxins; D004768:Enterotoxins; D005098:Exotoxins; D018089:Superantigens; C030107:enterotoxin F, Staphylococcal; C026066:enterotoxin A, Staphylococcal