Journal of Andrology Proceedings of the Fifth International Conference on the Epididymis
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Table 3. Association between ejaculation-to-analysis interval and markers of function of the epididymis (neutral {alpha}-glucosidase [NAG]), prostate (prostate-specific antigen [PSA] and zinc), and seminal vesicles (fructose) measured in semen from 915 men assessed for infertility*
    G≤30
  G31–60
  G>60
  Variables   n = 285   n = 583   n = 47
  NAG (mU/ejaculate){dagger}   29 (2.0)   28 (2.0)   27 (2.0)
  PSA (µg/ejaculate)   3350 (2.0){ddagger}   3400 (2.0)§   2600 (2.0){ddagger}§
  Zinc (µmol/ejaculate)   7.0 (2.0){ddagger}   6.0 (2.0)§   5.0 (3.0){ddagger}§
  Fructose (µmol/ejaculate)   54 (2.0)   52 (2.0)   43 (2.0)
  *Values represent geometric means (SD); linear regression models were used for analysis, and the data were adjusted for age of the donor, length of sexual abstinence, and season of collection (spring [March–May], summer [June–August], autumn [September–November], and winter [December–February])
  {dagger}A total of 504 samples analyzed for NAG: 180 in G≤30, 312 in G31–60, and 12 in G>60
  {ddagger}Significant difference between G≤30 and G>60
  §Significant difference between G31–60 and G>60





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