title: Preparation of oligozoospermic and/or asthenozoospermic semen for intrauterine insemination using the SpermPrep semen filtration column.
abstract: OBJECTIVE
  To improve the quality of oligozoospermic and/or asthenozoospermic semen by the SpermPrep (Fertility Technologies Inc., Natick, MA) semen filtration column.
  
  
  METHODS
  The SpermPrep column was applied for semen manipulation in oligozoospermia and/or asthenozoospermia (sperm count less than 20 x 10(6)/mL, sperm motility less than 40%). After concentration of motile sperm using a 40% Percoll density gradient centrifugation, the sperm suspension was filtered through the SpermPrep column. The percentage yield of motile sperm by the SpermPrep method was compared with those by a two-layer Percoll density gradient (Pharmacia, Uppsala, Sweden) centrifugation and a swim-up method. Infertile couples with poor quality semen were treated with intrauterine insemination (IUI) with motile sperm by the three preparations through three cycles.
  
  
  METHODS
  Department of Obstetrics and Gynecology, Osaka University Hospital.
  
  
  METHODS
  Twenty-one couples with long-standing infertility because of poor quality semen.
  
  
  METHODS
  Recovery of motile sperm, sperm motility, and outcome of IUI were evaluated among three semen preparations.
  
  
  RESULTS
  Motility was improved by the SpermPrep method in 32 of 33 cases of oligozoospermia and/or asthenozoospermia. Percentage yield of motile sperm by the SpermPrep method was significantly greater than those by the two-layer Percoll density gradient and swim-up methods (42.7 +/- 4.6 versus 22.1 +/- 3.1 and 13.8 +/- 3.5), but there is no significant difference in the sperm motility among three semen preparations. After one treatment cycle for each preparation, 2 of 21 women conceived after IUI with motile sperm separated in the SpermPrep method.
  
  
  CONCLUSIONS
  The SpermPrep method is an improved semen manipulation method for oligozoospermia and/or asthenozoospermia.
authors.affiliation: Department of Obstetrics and Gynecology, Osaka University Medical School, Osaka, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Ohashi
authors.forename: F
authors.initials: F
authors.lastname: Saji
authors.forename: A
authors.initials: A
authors.lastname: Wakimoto
authors.forename: M
authors.initials: M
authors.lastname: Kato
authors.forename: T
authors.initials: T
authors.lastname: Tsutsui
authors.forename: O
authors.initials: O
authors.lastname: Tanizawa
mesh_terms: D002469:Cell Separation; D002499:Centrifugation, Density Gradient / Q000379:methods; D004209:Disposable Equipment; D005260:Female; D005374:Filtration / Q000295:instrumentation / Q000379:methods; D006801:Humans; D007317:Insemination, Artificial, Homologous / Q000295:instrumentation / Q000379:methods*; D008297:Male; D009845:Oligospermia / Q000503:physiopathology*; D011205:Povidone; D012661:Semen; D012822:Silicon Dioxide; D013081:Sperm Motility; D013094:Spermatozoa / Q000166:cytology; D014599:Uterus
chemical_list: C016039:Percoll; D012822:Silicon Dioxide; D011205:Povidone