title: Presence of ribonucleic acid in human spermatozoa: differences in content between normal and abnormal spermatozoa.
abstract: OBJECTIVE
  Our purpose was to determine whether there are any differences in total ribonucleic acid content between normal and abnormal human spermatozoa.
  
  
  METHODS
  Spermatozoa were obtained from men undergoing routine semen analysis at a university-based reproductive genetics laboratory. Specimens were classified as normal or abnormal according to World Health Organization criteria. Total ribonucleic acid was removed by acid-phenol extraction, and ribonucleic acid expression levels were determined by spectrophotometric analysis.
  
  
  RESULTS
  Abnormal spermatozoa were found to have significantly more ribonucleic acid (0.14 +/- 0.02 mg/10(6) spermatozoa) than normal spermatozoa (0.05 +/- 0.01 mg/10(6) spermatozoa; P <.001).
  
  
  CONCLUSIONS
  Ribonucleic acid content is significantly altered in abnormal spermatozoa, and this alteration may be the result of some defect in the posttranscriptional pathway.
authors.affiliation: Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston 29425, USA.
authors.forename: M D
authors.initials: MD
authors.lastname: Wild
authors.forename: W E
authors.initials: WE
authors.lastname: Roudebush
mesh_terms: D006801:Humans; D008297:Male; D012313:RNA / Q000032:analysis*; D013053:Spectrophotometry; D013094:Spermatozoa / Q000002:abnormalities* / Q000737:chemistry*
chemical_list: D012313:RNA