title: [Expression of survivin, Fas, bcl-2 and bax in bone marrow cells from acute myeloid leukemia patients and its clinical significance].
abstract: To study the clinical significance of the expression of antiapoptosis gene, survivin and bcl-2, and proapoptosis gene, Fas and bax, in acute myeloid leukemia (AML), RT-PCR was used to examine the expression of survivin and flow cytometry (FCM) to detect the expression of Fas, bcl-2, bax and bcl-2/bax ratio in 68 cases of AML. The results demonstrated that: (1) The positivity of survivin mRNA expression was significantly higher in AML compared to control (70.6% vs 30%, P < 0.05). (2) The expression of Fas and bcl-2 in AML before treatment was significantly higher than that in control (P < 0.001), but the bax expression did not (P > 0.05). (3) The survivin-positive AML cases showed a significantly lower Fas and higher bcl-2 expression in comparison with survivin-negative ones (P < 0.01 and P < 0.001, respectively), but the bax did not (P > 0.01). (4) Survivin-positive AML cases had a lower CR rate as compared with survivin-negative cases (64.6% vs 90%, P < 0.05). (5) The survivin-positive CR cases showed a decreased expression of Fas and bcl-2 after treatment in comparison with pretreatment expression (P < 0.001), but the bax expression remained unchanged before and after therapy. The survivin-positive NR cases showed a significantly decreased Fas and increased bcl-2 expression as compared with pretreatment expression (P < 0.001). bcl-2/bax ratio was also significantly higher in NR cases.
  
  
  CONCLUSIONS
  70.6% AML cases showed positive for survivin expression with a lower CR rate, the survivin-positive AML showed a low Fas with high bcl-2 expression and bcl-2/bax ratio as compared to the survivin-negative cases.
authors.affiliation: Department of Hematology, The Second Affiliated Hospital, Hebei Medical University, Shijiazhuang 050000, China.
authors.forename: Feng-Ru
authors.initials: FR
authors.lastname: Lin
authors.forename: Ying
authors.initials: Y
authors.lastname: Wang
authors.forename: Rong-Qi
authors.initials: RQ
authors.lastname: Wang
authors.forename: Xing-Yan
authors.initials: XY
authors.lastname: Du
authors.forename: Xiao-Nan
authors.initials: XN
authors.lastname: Guo
authors.forename: Jin-Hai
authors.initials: JH
authors.lastname: Ren
authors.forename: Xiao-Ling
authors.initials: XL
authors.lastname: Guo
authors.forename: Li
authors.initials: L
authors.lastname: Yao
authors.forename: Er-Gu
authors.initials: EG
authors.lastname: Yao
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000970:Antineoplastic Agents / Q000627:therapeutic use; D014408:Biomarkers, Tumor / Q000096:biosynthesis / Q000235:genetics*; D001854:Bone Marrow Cells / Q000187:drug effects / Q000378:metabolism*; D005260:Female; D005434:Flow Cytometry; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D051034:Inhibitor of Apoptosis Proteins; D015470:Leukemia, Myeloid, Acute / Q000188:drug therapy / Q000235:genetics / Q000378:metabolism*; D008297:Male; D008869:Microtubule-Associated Proteins / Q000235:genetics; D008875:Middle Aged; D009363:Neoplasm Proteins; D011518:Proto-Oncogene Proteins / Q000096:biosynthesis; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000096:biosynthesis; D012333:RNA, Messenger / Q000187:drug effects / Q000235:genetics / Q000378:metabolism; D000077022:Survivin; D051028:bcl-2-Associated X Protein; D019014:fas Receptor / Q000096:biosynthesis
chemical_list: D000970:Antineoplastic Agents; C494826:BAX protein, human; C107489:BIRC5 protein, human; D014408:Biomarkers, Tumor; D051034:Inhibitor of Apoptosis Proteins; D008869:Microtubule-Associated Proteins; D009363:Neoplasm Proteins; D011518:Proto-Oncogene Proteins; D019253:Proto-Oncogene Proteins c-bcl-2; D012333:RNA, Messenger; D000077022:Survivin; D051028:bcl-2-Associated X Protein; D019014:fas Receptor