title: [Influence of sperm nucleoprotein transition on in vitro embryo development].
abstract: OBJECTIVE
  To correlate sperm nucleoprotein transition (SNT) with sperm morphology, DNA damage and embryo development, and assess its value for assisted reproductive technology (ART).
  
  
  METHODS
  The SNT of 437 infertile men underwent ART were assayed, and its correlation with sperm morphology, DNA damage, fertilization rate, normal fertilization rate, cleavage rate, available embryo rate, D3 high quality embryo rate, blastocyst formation rate and high quality blastocyst rate were analyzed.
  
  
  RESULTS
  The normal morphology rate of sperms, DNA damage, fertilization rate, normal fertilization rate, cleavage rate, embryo transfer rate (ETR), D3 high quality embryo rate, blastocyst formation rate (BFR) and high quality blastocyst in normal males (Group A, abnormal rate≤30%, 135 subjects) did not significantly differ from those with an abnormal rate between 30% and 60% (Group B, 170 subjects) (P>0.05). For those with an abnormal rate of above 60% (Group C, 132 subjects), the sperm normal morphology rate, DNA damage, normal fertilization rate, ETR, D3 high quality embryo rate, high quality blastocyst rate were significantly lower compared with Group A (P<0.01), while no significant difference was found in fertilization rate, cleavage rate and BFR between groups A and C (P>0.05).
  
  
  CONCLUSIONS
  SNT is related with sperm morphology rate, DNA damage and embryo development, and should be assessed before ART.
authors.affiliation: Sichuan Provincial Women and Children Hospital, Chengdu, Sichuan 610045, China. yfdyy1981@sohu.com.
authors.forename: Fei
authors.initials: F
authors.lastname: Ye
authors.forename: Yunxing
authors.initials: Y
authors.lastname: Li
authors.forename: Mingxia
authors.initials: M
authors.lastname: Hou
authors.forename: Dongsheng
authors.initials: D
authors.lastname: Xiong
authors.forename: Lan
authors.initials: L
authors.lastname: Zeng
mesh_terms: D000328:Adult; D001755:Blastocyst / Q000378:metabolism; D004249:DNA Damage; D004624:Embryo Transfer; D047108:Embryonic Development; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007248:Infertility, Male / Q000235:genetics / Q000378:metabolism*; D008297:Male; D009698:Nucleoproteins / Q000235:genetics / Q000378:metabolism*; D013094:Spermatozoa / Q000378:metabolism*
chemical_list: D009698:Nucleoproteins