title: High Aneuploidy Rates Observed in Embryos Derived from Donated Oocytes are Related to Male Aging and High Percentages of Sperm DNA Fragmentation.
abstract: Male aging effects on aneuploidy rates in embryos.
  
  
  OBJECTIVE
  Paternal age is associated with decreasing sperm quality; however, it is unknown if it influences chromosomal abnormalities in embryos. The objective of this study is to evaluate if the aneuploidy rates in embryos are affected by advanced paternal age.
  
  
  METHODS
  A total of 286 embryos, obtained from 32 in vitro fertilization/intracytoplasmic sperm injection cycles with donated oocytes in conjunction with preimplantation genetic diagnosis, were allocated according to paternal age in three groups: Group A: ≤39 years (n = 44 embryos); Group B: 40-49 years (n = 154 embryos); and Group C: ≥50 years (n = 88 embryos). Fertilization rates, embryo quality at day 3, blastocyst development, and aneuploidy embryo rates were then compared.
  
  
  RESULTS
  There was no difference in the seminal parameters (volume, concentration, and motility) in the studied groups. Fertilization rate, percentages of zygotes underwent cleavage, and good quality embryos on day 3 were similar between the three evaluated groups. The group of men ≥50 years had significantly more sperm with damaged DNA, low blastocyst development rate, and higher aneuploidy rates in embryos compared to the other two evaluated groups (P < 0.05).
  
  
  CONCLUSIONS
  Our findings suggest that advanced paternal age increases the aneuploidy rates in embryos from donated oocytes, which suggests that genetic screening is necessary in those egg donor cycles with sperm from patients >50 years old.
authors.affiliation: FERTILAB Laboratory of Assisted Reproduction, Lima, Perú.
authors.forename: Javier
authors.initials: J
authors.lastname: García-Ferreyra
authors.affiliation: FERTILAB Laboratory of Assisted Reproduction, Lima, Perú.
authors.forename: Daniel
authors.initials: D
authors.lastname: Luna
authors.affiliation: FERTILAB Laboratory of Assisted Reproduction, Lima, Perú.
authors.forename: Lucy
authors.initials: L
authors.lastname: Villegas
authors.affiliation: PROCREAR Fertility Center, Lima, Perú.
authors.forename: Rocío
authors.initials: R
authors.lastname: Romero
authors.affiliation: PROCREAR Fertility Center, Lima, Perú.
authors.forename: Patricia
authors.initials: P
authors.lastname: Zavala
authors.affiliation: PROCREAR Fertility Center, Lima, Perú.
authors.forename: Roly
authors.initials: R
authors.lastname: Hilario
authors.affiliation: FERTILAB Laboratory of Assisted Reproduction, Lima, Perú. ; PROCREAR Fertility Center, Lima, Perú.
authors.forename: Julio
authors.initials: J
authors.lastname: Dueñas-Chacón
keywords: ART; PGD; aging; aneuploidy; oocyte