title: [Expression of hypoxia inducible factor-1alpha in placenta of pregnancy induced hypertension].
abstract: OBJECTIVE
  To investigate the expression of hypoxia inducible factor-1alpha (HIF-1alpha) in placentas of pregnancy induced hypertension (PIH).
  
  
  METHODS
  Placentas of 49 PIH pregnancies (PIH group 1) and 26 normotensive pregnancies (control group 1) were investigated for HIF-1alpha protein expression using microarray and immunohistochemistry. The expression of HIF-1alpha mRNA in placentas of 12 PIH pregnancies (PIH group 2) and 12 normal pregnancies(control group 2) was respectively detected by RT-PCR.
  
  
  RESULTS
  (1) There was significant difference in the positive and slight-moderate-positive spot proportions of HIF-1alpha protein between the PIH group 1 (63.1%, 23.3%) and the control group 1 (20.9%, 7.0%, P < 0.01). (2) The level of HIF-1alpha mRNA between PIH group 2 and control group 2 (0.96 +/- 0.37 vs 0.95 +/- 0.20, P > 0.05) was not statistically different.
  
  
  CONCLUSIONS
  (1) There was no significant difference in HIF-1alpha mRNA level between the PIH and normal placentas, but there was a remarkable difference in protein level between the two groups. (2) HIF-1alpha regulate the pathological and physiological progress of PIH at protein level rather than at transcription level.
authors.affiliation: Department of Obstetrics and Gynecology, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Sun
authors.forename: Yuan-Qing
authors.initials: YQ
authors.lastname: Yao
authors.forename: Dong-Hong
authors.initials: DH
authors.lastname: Li
authors.forename: Guo-Wu
authors.initials: GW
authors.lastname: Yin
authors.forename: Feng
authors.initials: F
authors.lastname: Jiang
authors.forename: Wen-Yong
authors.initials: WY
authors.lastname: Wang
authors.forename: Shu-Fang
authors.initials: SF
authors.lastname: Wang
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D046110:Hypertension, Pregnancy-Induced / Q000378:metabolism*; D051795:Hypoxia-Inducible Factor 1, alpha Subunit; D010920:Placenta / Q000378:metabolism*; D011247:Pregnancy; D012333:RNA, Messenger / Q000096:biosynthesis / Q000235:genetics; D014157:Transcription Factors / Q000096:biosynthesis* / Q000235:genetics
chemical_list: C497442:HIF1A protein, human; D051795:Hypoxia-Inducible Factor 1, alpha Subunit; D012333:RNA, Messenger; D014157:Transcription Factors