title: Improvement in early human embryo development using new formulation sequential stage-specific culture media.
abstract: OBJECTIVE
  To determine whether altering selected components of sequential culture media can improve early development variables of human embryos.
  
  
  METHODS
  Prospective, randomized, sibling oocyte split trial.
  
  
  METHODS
  Private ART center.
  
  
  METHODS
  Two hundred eight undergoing treatment with in vitro fertilization or microinjection.
  
  
  METHODS
  Oocytes from each patient were randomly allocated to fertilization and cleavage media of a control and a trial culture medium formulation.
  
  
  METHODS
  Rates of fertilization, cleavage, and uncontrolled division; average embryo morphology score; blastomeres per embryo; embryo score parameter (number of blastomeres x embryo morphology grade); and embryo utilization. The trial media resulted in a higher fertilization rate, higher cleavage rate, lower rate of uncontrolled division, higher number of blastomeres per embryo, higher average embryo morphology score, a higher embryo score parameter, and higher embryo utilization rate compared to the control media. All differences were statistically significant.
  
  
  CONCLUSIONS
  Improved sequential stage-specific culture media can reduce the occurrence of severe human embryo fragmentation and improve developmental variables in early IVF- and ICSI-generated embryos.
authors.affiliation: CityWest IVF, Westmead, New South Wales, Australia. lab@ivf.com.au
authors.forename: Simon
authors.initials: S
authors.lastname: Cooke
authors.forename: Patrick
authors.initials: P
authors.lastname: Quinn
authors.forename: Lee
authors.initials: L
authors.lastname: Kime
authors.forename: Cheryl
authors.initials: C
authors.lastname: Ayres
authors.forename: John P P
authors.initials: JP
authors.lastname: Tyler
authors.forename: Geoff L
authors.initials: GL
authors.lastname: Driscoll
mesh_terms: D000328:Adult; D001757:Blastomeres / Q000187:drug effects; D001826:Body Fluids / Q000502:physiology; D002455:Cell Division / Q000187:drug effects; D002970:Cleavage Stage, Ovum / Q000187:drug effects; D003470:Culture Media / Q000737:chemistry* / Q000494:pharmacology*; D004622:Embryo, Mammalian / Q000033:anatomy & histology; D005314:Embryonic and Fetal Development / Q000187:drug effects*; D005187:Fallopian Tubes / Q000378:metabolism; D005260:Female; D005306:Fertilization / Q000187:drug effects; D005307:Fertilization in Vitro; D006801:Humans; D011247:Pregnancy; D011446:Prospective Studies; D020554:Sperm Injections, Intracytoplasmic
chemical_list: D003470:Culture Media