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Table 2 Differences of ROS production in neat semen and in spermatozoa suspension between fertile volunteers and subgroups of males from infertile couples

From: The measurement of reactive oxygen species in human neat semen and in suspended spermatozoa: a comparison

groups n ROS (RLU × 103) in neat semen ap ROS (RLU × 104) in spermatozoa suspension bp
FV 34 0.26 (0.12; 0.55)   3.5 (1.3; 13.0)  
NS 39 0.31 (0.12; 1.12) <0.52 2.4 (1.0; 20.2) <0.91
SA 52 1.1 (0.19; 4.1) <0.005 9.3 (1.4; 118.3) <0.055
SA subgroups of SA EN 27 0.24 (0.15; 1.30) <0.27 3.9 (0.9; 28.2) <0.1
SA EL 20 1.14 (0.36; 4.2) <0.005 11.0 (2.0; 107.3) <0.76
SA EH 5 32.3 (7.40; 55.8) <10-5 385.0 (170.0; 625.0) <10-5
  1. Values are presented as median (25th; 75th percentile). The ap and bp values designate the differences in ROS production in subgroups of males from infertile couples versus FV in neat semen and in spermatozoa in PBS suspension, respectively. A value of p < 0.05 was considered significant by Mann-Whitney U test.
  2. FV - fertile volunteers, NS - normozoospermic males, SA - males with semen abnormalities,
  3. SA EN - subgroup of SA with negative Endtz test, SA EL - subgroup of SA with Endtz test <0.5 × 106/ml, SA EH - subgroup of SA with Endtz test >0.5 × 106/ml