title: Elevated expressions of p53, CDKNA1, and Bax in placental villi from patients with recurrent spontaneous abortion.
abstract: OBJECTIVE
  This study assessed the relationship between the p53-dependent apoptosis and recurrent spontaneous abortion (RSA).
  
  
  METHODS
  Thirty women with recurring miscarriages were enrolled as experimental group, and 30 women with normal reproduction served as control group. Immunohistochemistry was used to evaluate expression of p53 in villous tissue specimens. Further, expressions of CDKN1A and Bax mRNAs were evaluated by qPCR. TUNEL assay was utilized to document cell apoptosis.
  
  
  RESULTS
  Expression of p53 was significantly increased in chorionic villi of patients in experimental group (p < 0.05 vs. control group). Further, CDKN1A and Bax mRNA levels were elevated in experimental group (p < 0.05 vs. control group), and the cell apoptosis index was increased as well.
  
  
  CONCLUSIONS
  The p53-CDKN1A and p53-Bax signaling pathways appear to be activated in RSA. Thus, the apoptosis pathways controlled by p.
authors.affiliation: Naval General Hospital, PLA, Beijing, China. hizyyweishang@163.com.
authors.forename: W
authors.initials: W
authors.lastname: Shang
authors.forename: M-M
authors.initials: MM
authors.lastname: Shu
authors.forename: M
authors.initials: M
authors.lastname: Liu
authors.forename: A-M
authors.initials: AM
authors.lastname: Wang
authors.forename: L-B
authors.initials: LB
authors.lastname: Lv
authors.forename: Y
authors.initials: Y
authors.lastname: Zhao
authors.forename: M
authors.initials: M
authors.lastname: Li
authors.forename: L
authors.initials: L
authors.lastname: Yan
mesh_terms: D000026:Abortion, Habitual / Q000235:genetics / Q000378:metabolism*; D000328:Adult; D016022:Case-Control Studies; D002824:Chorionic Villi / Q000737:chemistry*; D050759:Cyclin-Dependent Kinase Inhibitor p21 / Q000032:analysis* / Q000235:genetics; D005260:Female; D005865:Gestational Age; D006801:Humans; D007150:Immunohistochemistry; D020287:In Situ Nick-End Labeling; D011247:Pregnancy; D012333:RNA, Messenger / Q000032:analysis; D020133:Reverse Transcriptase Polymerase Chain Reaction; D015398:Signal Transduction; D016159:Tumor Suppressor Protein p53 / Q000032:analysis*; D015854:Up-Regulation; D055815:Young Adult; D051028:bcl-2-Associated X Protein / Q000032:analysis* / Q000235:genetics
chemical_list: C494826:BAX protein, human; C493956:CDKN1A protein, human; D050759:Cyclin-Dependent Kinase Inhibitor p21; D012333:RNA, Messenger; C495901:TP53 protein, human; D016159:Tumor Suppressor Protein p53; D051028:bcl-2-Associated X Protein