Tianjin Medical Journal ›› 2023, Vol. 51 ›› Issue (6): 637-641.doi: 10.11958/20222040

• Clinical Research • Previous Articles     Next Articles

Difference analysis of sperm dynamic parameters after sperm extraction twice in a short time

LIU Yongjie(), SHI Dongmei, DAI Liang, ZHANG Fan, WANG Guoping   

  1. Reproductive Center, Maternal and Child Health Hospital of Yinchuan, Yinchuan 750001, China
  • Received:2022-12-08 Revised:2023-01-13 Published:2023-06-15 Online:2023-06-20

Abstract:

Objective To investigate the difference of sperm dynamic parameters in two-time spermatozoa. Methods Forty-eight men who prepared for physical examination were selected in this study. The semen of them were collected after 1 h verses 2- 7 days of ejaculation abstinence. Semen volume, sperm concentration, proportion of forward motile sperm and proportion of straight motile sperm were analyzed by computer-aided sperm analysis system. Sperm dynamic parameters included mean curve motion velocity (VCL), mean linear motion velocity (VSL), mean path motion velocity (VAP), mean sperm yaw amplitude (ALH), mean sperm whig frequency (BCF), mean sperm motion angle (MAD), straightness of motion (LIN), wobble of motion (WOB) and forward motion (STR). The plasma zinc content was determined by 5-Br-PAPS method. Fructose content was determined by hexokinase method. The content of α-glycosidase in seminal plasma was determined by improved Cooper method after liquefaction. The differences of above indexes and the relationship between semen volume, sperm concentration, the proportion of forward motile sperm and the dynamic parameters of sperm were analyzed. Results The semen volume, proportion of linear motility sperm, total sperm, total forward motility sperm, total linear motility sperm, VCL, VAP, BCF, seminal plasma zinc and α-glucosidase levels of the first sperm extraction were higher than those of the second sperm extraction (P<0.05). There were no significant differences in sperm concentration, forward motility sperm ratio, VSL, ALH, MAD, LIN, WOB, STR and spermatoglycose level between sperm from two times of sperm extraction. The semen volume of the first extraction was positively correlated with BCF, and the semen volume of the second extraction was negatively correlated with VCL, VSL, VAP, ALH, MAD and WOB (P<0.05). The sperm concentration of the first sperm extraction was positively correlated with BCF, and the sperm concentration of the second sperm extraction was positively correlated with the dynamic parameters of all sperm (P<0.05). Except the BCF of the first sperm extraction, the proportion of motile sperm in total, first and second sperm extraction was positively correlated with the dynamic parameters of other sperm groups (P<0.05). The serum zinc, fructose and α-glucosidase of total and first semen were positively correlated with BCF (P<0.05). The liquid fructose of the second semen was positively correlated with BCF, and the spermatoplasma α-glucosidase was negatively correlated with VCL and VAP (P<0.05). Conclusion Although the motility of the second semen sample is significantly decreased compared with that of the first time sperm extraction, it does not affect the ability of the motile sperm to bind to eggs, which can be used as an effective supplement to in vitro fertilization.

Key words: spermatozoa, semen analysis, fertility, sperm motility, ejaculation abstinence

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