title: [Epstein-Barr virus infection and expression of T-cell intracellular antigen-1 (TIA-1) in intestinal T-cell lymphoma].
abstract: OBJECTIVE
  To study the status of Epstein-Barr virus (EBV) infection and the expression of TIA-1 antigen in 24 cases of intestinal T-cell lymphomas.
  
  
  METHODS
  In situ hybridization for EBER1/2; immunohistochemical staining by three step ABC technique for TIA-1, LMP-1, CD30, CD45RO, CD3 AND CD20. 19 cases of intestinal B-cell lymphomas were used for comparison.
  
  
  RESULTS
  (1) Of the 24 intestinal T-cell lymphoma cases, 23 were pleomorphic, medium to large cell type, and one cases was small cell type; in 20 of the 24 cases EBER1/2 signals were detected in the tumor cells; in 4 of the 20 EBER1/2 positive cases, tumor cells expressed LMP-1; EBER1/2 was not detected in 19 cases of intestinal B-cell lymphomas. (2) in 23 of the 24 cases, TIA-1 was expressed in most tumor cells, but not in the only case of small cell type; TIA-1 was negative in tumor cells of all 19 cases of intestinal B-cell lymphomas.
  
  
  CONCLUSIONS
  A high level of EBV infection was present in this group of intestinal T-cell lymphomas, the expression of TIA-1 may be related to its cell origin. Intestinal T-cell lymphoma may be an EBV-associated extranodal NK/T cell lymphoma.
authors.affiliation: Department of Pathology, First University Hospital, West China University of Medical Sciences, Chengdu 610041.
authors.forename: X
authors.initials: X
authors.lastname: Ren
authors.forename: W
authors.initials: W
authors.lastname: Liu
authors.forename: G
authors.initials: G
authors.lastname: Li
authors.forename: F
authors.initials: F
authors.lastname: Li
authors.forename: S
authors.initials: S
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D018951:Antigens, CD20 / Q000032:analysis; D017252:CD3 Complex / Q000032:analysis; D020031:Epstein-Barr Virus Infections / Q000473:pathology* / Q000821:virology; D005260:Female; D004854:Herpesvirus 4, Human / Q000235:genetics / Q000378:metabolism; D006801:Humans; D007150:Immunohistochemistry; D017403:In Situ Hybridization; D007414:Intestinal Neoplasms / Q000378:metabolism / Q000473:pathology* / Q000821:virology; D017730:Ki-1 Antigen / Q000032:analysis; D017493:Leukocyte Common Antigens / Q000032:analysis; D016399:Lymphoma, T-Cell / Q000378:metabolism / Q000473:pathology* / Q000821:virology; D008297:Male; D008565:Membrane Proteins / Q000096:biosynthesis*; D008875:Middle Aged; D039102:Poly(A)-Binding Proteins; D011506:Proteins; D012367:RNA, Viral / Q000235:genetics; D016601:RNA-Binding Proteins / Q000096:biosynthesis*; D000074019:T-Cell Intracellular Antigen-1; D014763:Viral Matrix Proteins / Q000096:biosynthesis
chemical_list: D018951:Antigens, CD20; D017252:CD3 Complex; C037662:EBV-associated membrane antigen, Epstein-Barr virus; C099537:Epstein-Barr virus encoded RNA 1; C106732:Epstein-Barr virus encoded RNA 2; D017730:Ki-1 Antigen; D008565:Membrane Proteins; D039102:Poly(A)-Binding Proteins; D011506:Proteins; D012367:RNA, Viral; D016601:RNA-Binding Proteins; D000074019:T-Cell Intracellular Antigen-1; C071558:TIA1 protein, human; D014763:Viral Matrix Proteins; D017493:Leukocyte Common Antigens