title: [Expression of PTEN and p27 proteins in non-Hodgkin's lymphoma].
abstract: OBJECTIVE
  To investigate the effect of the expression of phosphatase and tensin homolog deleted on chromosome ten (PTEN) and p27 proteins in non-Hodgkin's lymphoma (NHL).
  
  
  METHODS
  The expressions of PTEN and p27 proteins were detected with immunohistochemical technique in 77 cases of NHL.
  
  
  RESULTS
  In NHL, the positive rates of PTEN and p27 protein were 90.9% (70/77) and 51.9% (40/77), respectively. The positive strength of PTEN protein was positively correlated to that of p27 protein (r = 0.6841, P < 0.01). The expression intensity of PTEN and p27 proteins in the low grade group was all higher than that in the high grade group. The expression intensity of PTEN and p27 proteins in B NHL showed no significant difference with that of T NHL.
  
  
  CONCLUSIONS
  The decrease of p27 protein expression caused by the deletion and descent of PTEN protein expression cannot effectively play the anti-oncogene role in negative regulation of the cell cycle, which makes the tumor cells more malignant.
authors.affiliation: Department of Pathology, Xiangya School of Medicine, Central South University, Changsha 410078, China.
authors.forename: Yue-nan
authors.initials: YN
authors.lastname: Li
authors.forename: De-yun
authors.initials: DY
authors.lastname: Feng
authors.forename: Hui
authors.initials: H
authors.lastname: Zheng
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D005260:Female; D016147:Genes, Tumor Suppressor; D006801:Humans; D008198:Lymph Nodes / Q000378:metabolism; D008228:Lymphoma, Non-Hodgkin / Q000235:genetics / Q000378:metabolism*; D008297:Male; D008840:Microfilament Proteins / Q000235:genetics / Q000378:metabolism*; D008875:Middle Aged; D009124:Muscle Proteins
chemical_list: D008840:Microfilament Proteins; D009124:Muscle Proteins; C058992:Tagln protein, mouse