title: [Expression and Clinical Pathological Significance of EBER, PTEN and VEGF in Angioimmunoblastic T-Cell Lymphoma].
abstract: OBJECTIVE
  To investigate the expression and clinical pathological significance of EB virus (Epstein-Barr virus, EBV), PTEN and VEGF in angioimmunoblastic T -cell lymphoma (AITL).
  
  
  METHODS
  The EBV -encoded small RNA (EBER) expression in 21 cases of AITL was detected by in situ hybridization. The expressions of PTEN and VEGF were detected in 21 cases of AITL and 20 cases of lymph node reactive hyperplasia by immunohistochemical EnVision two-steps method. The expression and clinicopathological significance of EBV, PTEN and VEGF in AITL were analyzed.
  
  
  RESULTS
  The positive expression rate of EBER in 21 cases of AITL was 61.9%; the expressions of PTEN and VEGF in AITL and lymph node reactive hyperplasia were significantly different (P<0.05). The expressions of EBER and PTEN negatively correlated (P<0.05). The EBER positive expression rates of male patients in AITL group and the progressed group was 80% and 78.6% respectively, which were significantly higher than that in female patients and patients in non- advanced group (P<0.05); the PTEN expression rates in the AITL group accompanying B symptoms and progressed group were 31.3% and 21.4%, respectively, which were significantly lower than those in patients without B symptoms and non-progressed group (P<0.05). Survival analysis showed that the PTEN expression negatively correlated with the overall survival rate of patients (P<0.05).
  
  
  CONCLUSIONS
  EBV infection and low expression of PTEN may indicate the deterioration of angioimmunoblastic T-cell lymphoma. Whether the EBV involved in the ocurring of T-cell angioimmunoblastic lymphoma by down-regulating PTEN expression is unclear, further research is needed.
authors.affiliation: Department of Hematology, Provincial Hospital Affiliated to Anhui Medical University, Hefei 230001, Anhui Province, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Wang
authors.affiliation: Department of Pathology, The First Affiliated Hospital, Anhui Medical University, Hefei 230032, Anhui Province, China.
authors.forename: Gui-Hong
authors.initials: GH
authors.lastname: Zhang
authors.affiliation: Department of Hematology, Provincial Hospital Affiliated to Anhui Medical University, Hefei 230001, Anhui Province, China. E-mail: dingkaiy@126.com.
authors.forename: Kai-Yang
authors.initials: KY
authors.lastname: Ding
authors.affiliation: Department of Hematology, Provincial Hospital Affiliated to Anhui Medical University, Hefei 230001, Anhui Province, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Liu
authors.affiliation: Department of Pathology, Provincial Hospital Affiliated to Anhui Medical University, Hefei 230001, Anhui Province, China.
authors.forename: Hai-Yan
authors.initials: HY
authors.lastname: Weng
mesh_terms: D020031:Epstein-Barr Virus Infections; D005260:Female; D004854:Herpesvirus 4, Human; D006801:Humans; D007119:Immunoblastic Lymphadenopathy; D017403:In Situ Hybridization; D016399:Lymphoma, T-Cell; D008297:Male; D051059:PTEN Phosphohydrolase; D016019:Survival Analysis; D015996:Survival Rate; D042461:Vascular Endothelial Growth Factor A
chemical_list: C467484:VEGFA protein, human; D042461:Vascular Endothelial Growth Factor A; D051059:PTEN Phosphohydrolase; C494929:PTEN protein, human