title: Glass wool filtration reduces reactive oxygen species by elimination of leukocytes in oligozoospermic patients with leukocytospermia.
abstract: OBJECTIVE
  Two types of glass wool were used to remove leukocytes in semen for evaluation of reactive oxygen species production by spermatozoa in oligozoospermic patients with leukocytospermia.
  
  
  METHODS
  Semen samples were prepared using fine-structure glass wool (SpermFertil) and coarse-structure glass wool. In each treatment group, native semen was evaluated for sperm concentration, percentage motility, viability, leukocyte concentration, and production of reactive oxygen species.
  
  
  RESULTS
  Electron microscopically, SpermFertil showed a higher number of leukocytes attached to the fibers compared to coarse-structure glass wool. Leukocytes in native semen and after glass wool filtration as determined by peroxidase cytochemistry confirmed this observation. Reactive oxygen species decreased from 45.303 counts/10(7) viable cells in native semen to 15.806 counts/10(7) cells in coarse structure wool and 7.465 counts/10(7) cells in Spermfertil, respectively.
  
  
  CONCLUSIONS
  Removal of leukocytes from semen of oligozoospermic patients by means of glass wool filtration is a useful method to distinguish production of reactive oxygen species by leukocytes versus sperm cells.
authors.affiliation: Department of Preclinical Science, Faculty of Medicine, La Frontera University, Temuco, Chile.
authors.forename: R
authors.initials: R
authors.lastname: Sánchez
authors.forename: M
authors.initials: M
authors.lastname: Concha
authors.forename: T
authors.initials: T
authors.lastname: Ichikawa
authors.forename: R
authors.initials: R
authors.lastname: Henkel
authors.forename: W B
authors.initials: WB
authors.lastname: Schill
mesh_terms: D005898:Glass; D006801:Humans; D007962:Leukocytes / Q000378:metabolism; D008297:Male; D008855:Microscopy, Electron, Scanning; D018384:Oxidative Stress; D009195:Peroxidase / Q000032:analysis / Q000378:metabolism; D017382:Reactive Oxygen Species / Q000378:metabolism*; D012661:Semen / Q000737:chemistry / Q000378:metabolism; D013076:Sperm Count; D013081:Sperm Motility; D013094:Spermatozoa / Q000378:metabolism*
chemical_list: D017382:Reactive Oxygen Species; C009753:fiberglass; D009195:Peroxidase