title: Expression of beta-tubulin epitope in human sperm with pathological spermiogram.
abstract: OBJECTIVE
  To determine the location of the corresponding epitope on the tubulin molecule and to find any differences in its exposition in human sperm with normal and pathological spermiograms. The mature spermatozoon exhibits extraordinary structural compartmentalization that is related to the presence of cytoskeletal proteins and has a functional role in connection with fertilization and motility. Previously, we have shown that anti-beta-tubulin antibody TU-12 provided an unexpectedly strong reaction in human and boar sperm head.
  
  
  METHODS
  A retrospective study.
  
  
  METHODS
  Academic research laboratories and private IVF center.
  
  
  METHODS
  One hundred thirteen men participating in the IVF program.
  
  
  METHODS
  Sperm were divided into five categories: normozoospermia, oligozoospermia, asthenozoospermia, teratozoospermia, and asthenoteratozoospermia. Well-characterized monoclonal antibodies were applied for monitoring tubulin epitope distributions in pathological spermatozoa.
  
  
  METHODS
  Qualitative and quantitative detection of tubulin.
  
  
  RESULTS
  TU-12 epitope was located in the beta-tubulin region beta 426-435. Immunoblotting revealed differences in the amount of tubulin among men with normozoospermia and pathological spermiogram. Striking differences were observed in the exposition of TU-12 epitope in heads of normal and pathological spermatozoa.
  
  
  CONCLUSIONS
  The results suggest that tubulin epitopes could be useful biomarkers of the pathological sperm state.
authors.affiliation: Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Prague, Czech Republic. jpeknic@biomed.cas.cz
authors.forename: Jana
authors.initials: J
authors.lastname: Peknicova
authors.forename: Marie
authors.initials: M
authors.lastname: Pexidrova
authors.forename: Alena
authors.initials: A
authors.lastname: Kubatova
authors.forename: Pavel
authors.initials: P
authors.lastname: Koubek
authors.forename: Olina
authors.initials: O
authors.lastname: Tepla
authors.forename: Tetyana
authors.initials: T
authors.lastname: Sulimenko
authors.forename: Pavel
authors.initials: P
authors.lastname: Draber
mesh_terms: D015415:Biomarkers / Q000378:metabolism; D000939:Epitopes / Q000096:biosynthesis* / Q000235:genetics; D005786:Gene Expression Regulation / Q000502:physiology; D006801:Humans; D007248:Infertility, Male / Q000378:metabolism / Q000473:pathology; D008297:Male; D012189:Retrospective Studies; D013094:Spermatozoa / Q000378:metabolism* / Q000473:pathology*; D014404:Tubulin / Q000096:biosynthesis* / Q000235:genetics
chemical_list: D015415:Biomarkers; D000939:Epitopes; D014404:Tubulin