title: Effect of alcoholic extract of Lepidium meyenii (Maca) on testicular function in male rats.
abstract: OBJECTIVE
  To evaluate the effect of the alcoholic extract of Lepidium meyenii (Maca) on the spermatogenesis in male rats.
  
  
  METHODS
  In Holtzman rats, Maca alcoholic extract (5 %) was given by oral route at doses of 48 mg/day or 96 mg/day for 7 days, 14 days and 21 days. Testicular function was assessed by measurements of lengths of different stages of seminiferous epithelia and by epididymal sperm count.
  
  
  RESULTS
  Ethanolic extract of Maca increased the length of stages IX-XI of seminiferous epithelium at treatment day 7, day 14 and day 21. Progression of spermatogenesis was evident only after day 21 when lengths of stages XII-XIV of seminiferous epithelium were increased; at day 7 and day 14, no important change in spermatogenesis was observed. Epididymal sperm count was increased with 48 mg/day at all times. With 96 mg/day an increase in sperm count was observed at day 7, but it was reduced at day 14 and day 21 of treatment. Serum testosterone levels were not affected.
  
  
  CONCLUSIONS
  The alcoholic extract of Maca activates onset ant progression of spermatogenesis at 48 mg/day or 96 mg/day in rats.
authors.affiliation: Department of Biological and Physiological Sciences, Faculty of Sciences and Philosophy, Instituto de Investigaciones de la Altura, Universidad Peruana Cayetano Heredia, Postal Office 1843, Lima, Peru. iiad@upch.edu.pe
authors.forename: Gustavo F
authors.initials: GF
authors.lastname: Gonzales
authors.forename: Julio
authors.initials: J
authors.lastname: Rubio
authors.forename: Arturo
authors.initials: A
authors.lastname: Chung
authors.forename: Manuel
authors.initials: M
authors.lastname: Gasco
authors.forename: Leon
authors.initials: L
authors.lastname: Villegas
mesh_terms: D000818:Animals; D004822:Epididymis / Q000166:cytology; D000431:Ethanol; D029686:Lepidium / Q000737:chemistry*; D008297:Male; D010936:Plant Extracts / Q000008:administration & dosage / Q000494:pharmacology*; D051381:Rats; D012670:Seminiferous Epithelium / Q000033:anatomy & histology / Q000187:drug effects; D013076:Sperm Count; D013091:Spermatogenesis / Q000187:drug effects; D013737:Testis / Q000187:drug effects* / Q000502:physiology*; D013739:Testosterone / Q000097:blood
chemical_list: D010936:Plant Extracts; D000431:Ethanol; D013739:Testosterone