sperm penetration

sperm penetration

The ability of sperm to move through the cervical mucus, swim up the endometrial cavity and down the fallopian tubes, and penetrate/fertilise the ovum (egg).
References in periodicals archive ?
Covered in this Report The Global Male Infertility market can be divided into seven segments: DNA Fragmentation Technique, Oxidative Stress Analysis, Microscopic Examination, Sperm Penetration Assay, Sperm Agglutination, CASA, and Others.
The male infertility market is segmented based on techniques, namely DNA fragmentation, oxidative stress analysis, sperm agglutination test, sperm penetration test, microscopic examination, computer assisted semen analysis and others.
Anti-sperm antibodies affect sperm function differently as follows: impairment of sperm penetration into cervical mucus, inhibition of sperm capacitation, incomplete acrosomal reaction, disruption of sperm-egg binding, and disorder in egg fertilization (6).
The secondary effect was to cause thickening of the vaginal mucous, and delays of sperm penetration to the fallopian tubes; therefore, should a spermatozoon penetrate and fertilize the ovum, then changes in the mobility of the fallopian tubes would delay the transport of the embryo and it would starve to death.
The function of these pores is currently not known, but they could be channels for sperm penetration.
Presently available functional tests under these categories include, zona-free hamster oocyte sperm penetration test (22), hemizona assay (HZA) (23) and the hypoosmotic swelling (HOS) test (24).
Cellulose sulfate is an antimicrobial that stimulates acrosomal loss, inhibits hyaluronidase, and impedes sperm penetration into cervical mucus.
Each type of ASAB may interfere directly or indirectly with a different step in the fertilization process, including sperm motility, sperm penetration of the cervical mucus, sperm capacitation and the acrosome reaction, sperm binding and penetration of the zona pellucida, zona reaction, gamete fusion, cleavage, and embryo development.
It includes tests on the woman's hormone levels, the male sperm penetration, as well as practical advice such as avoiding hot baths and the impact of smoking.
Reassessment of male factor infertility, including the varicocele, sperm penetration assay, semen analysis and in vitro fertilization.
The role of sperm antibodies in the inhibition of sperm penetration into cervical mucus has been clearly defined.