title: Techniques for selection of normal-chromatin sperm preparations.
abstract: Various sperm preparation techniques, swim-up and Percoll gradient, and the newly developed Wang's tube system, were evaluated for their ability to recover normal-chromatin sperm. Twenty human semen samples, collected by masturbation, were studied simultaneously with the three methods. Analysis by Acridine orange fluorescence test was performed on all samples. Pretreated semen contains 58 +/- 22% green sperm (fertile/normal). Treatment with Wang's tube system resulted in 99 +/- 1.0% green sperm; Percoll gradient, 78 +/- 11%; and swim-up technique, 72 +/- 15%. It would appear that Wang's tube system yields a high-quality sperm preparation with enough concentration, very active forward progression, and greatly improved sperm morphology, while containing normal-chromatin, double-stranded DNA.
authors.affiliation: Microbofre Scientific Institute, Cathay General Hospital, Taipei, Taiwan, ROC.
authors.forename: F N
authors.initials: FN
authors.lastname: Wang
authors.forename: C Y
authors.initials: CY
authors.lastname: Hong
authors.forename: T S
authors.initials: TS
authors.lastname: Chou
authors.forename: C H
authors.initials: CH
authors.lastname: Hsiung
authors.forename: W G
authors.initials: WG
authors.lastname: Karow
authors.forename: M C
authors.initials: MC
authors.lastname: Pesic
mesh_terms: D000165:Acridine Orange; D002469:Cell Separation / Q000379:methods*; D002843:Chromatin; D006801:Humans; D008297:Male; D011205:Povidone; D012822:Silicon Dioxide; D013094:Spermatozoa / Q000648:ultrastructure
chemical_list: D002843:Chromatin; C016039:Percoll; D012822:Silicon Dioxide; D000165:Acridine Orange; D011205:Povidone