title: Improved fertilization rate in an in vitro fertilization program by egg yolk-treated sperm.
abstract: High fertilization and PRs have been achieved by using thawed donor sperm cryopreserved with medium containing EY. The aim of our study was to examine the possible effect of EY on the fertilizing capacity of fresh sperm in an IVF program. Preincubation of spermatozoa in EY for 2 hours at room temperature significantly improved fertilization (P less than 0.001) in couples who had low fertilization rates in previous cycles, whereas no effect was found concerning couples with high fertilization rates.
authors.affiliation: In Vitro Fertilization/Embryo Transfer Unit, Tel Aviv Sourasky Medical Center, Israel.
authors.forename: Y
authors.initials: Y
authors.lastname: Barak
authors.forename: A
authors.initials: A
authors.lastname: Amit
authors.forename: J B
authors.initials: JB
authors.lastname: Lessing
authors.forename: G
authors.initials: G
authors.lastname: Paz
authors.forename: Z T
authors.initials: ZT
authors.lastname: Homonnai
authors.forename: L
authors.initials: L
authors.lastname: Yogev
mesh_terms: D004527:Egg Proteins / Q000494:pharmacology; D004530:Egg Yolk / Q000502:physiology*; D005260:Female; D005298:Fertility / Q000502:physiology; D005307:Fertilization in Vitro / Q000379:methods*; D006801:Humans; D008297:Male; D011247:Pregnancy; D011256:Pregnancy Outcome; D013094:Spermatozoa / Q000187:drug effects / Q000502:physiology*
chemical_list: D004527:Egg Proteins