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S Jager

Publications and source records attributed to S Jager.

8 recordsLinked to original sources
PubMed1992

The significance of antisperm antibodies for sperm-cervical mucus interaction.

An overview is presented of the effects of antisperm antibodies on the sperm-cervical mucus interaction. Antisperm IgA on spermatozoa or in cervical mucus can severely inhibit sperm penetration of cervical mucus and migration through it. Disturbance of the sperm-cervical mucus interaction is the only firmly established effect of these antisperm antibodies and leads to reduced fertility, as shown by a poor or negative result of the post-coital test. The presence of antisperm IgA in the male or female partner can be investigated more specifically with the sperm-cervical mucus contact test and can be confirmed by the sperm agglutination test on bromelinliquefied cervical mucus, by the mixed antiglobulin reaction test or by the immunobead test for IgA.

Autoantibodies↗
PubMed1978

A simple method of screening for antisperm antibodies in the human male. Detection of spermatozoal surface IgG with the direct mixed antiglobulin reaction carried out on untreated fresh human semen.

A simple and rapid test for the detection of antisperm antibodies of the IgG class on freely swimming spermatozoa in fresh human semen is described. The test is based on the formation of motile mixed agglutinates between erythrocytes sensitized with incomplete anti-Rh-antibodies and freely swimming spermatozoa with surface antisperm antibodies, after mixing both cell types together with anti-IgG antiserum. Agglutination of the red blood cells serves as an internal control. The test can be applied on ejaculates with spermatozoa concentrations down to one million per ml, provided the motility is sufficient. The percentage of motile spermatozoa found to be coated with antisperm antibodies of the IgG class, and the extent of the coating, proved to be correlated with the agglutination titer of circulating antisperm antibodies and with the inhibition of sperm penetration into cervical mucus. The test can be used as a screening for the presence of antisperm autoantibodies in serum and semen.

Agglutination↗
PubMed1978

Treatment of infertility caused by antisperm antibodies.

Twenty infertile couples with antisperm antibodies in the male or in the female partner were scheduled for treatment. In 15 couples the male and in 5 couples the female partner was the antisperm antibody carrier. In all the couples the result of the in vivo and in vitro sperm-penetration test was negative or poor. The SCMC-test was strongly positive in each of the couples. In all the couples IgG and IgA antisperm antibodies could be demonstrated on the spermatozoa or in the cervical mucus. It was postulated that antisperm IgA and not antisperm IgG is responsible for the penetration reduction of spermatozoa in cervical mucus and for the "shaking phenomenon" in the SCMC-test. Intrauterine inseminations, performed in 20 couples, resulted in four pregnancies. Condom therapy in three couples, for at lest 6 months, had no result. Two men were treated with 96 mg methylprednisolone per day for 7 days; this resulted in a slight decrease of the sperm-agglutination titre, but no pregnancy occurred.

Adult↗
PubMed1978

The "unexplained" poor postcoital test.

In 30 or 32 infertile couples with an unexplained negative or bad in vivo and in vitro sperm penetration test, we obtained a strongly positive Sperm Cervical Mucus Contact test (SCMC-test) and demonstrated the presence of antisperm antibodies in the male or female partner. In these 30 couples 25 of the male partners had a sperm-agglutination titre of at least 32 in the serum and at least 4 in the seminal plasma. In the five remaining couples the female partner showed a minimum sperm-agglutination titre of 16 in the serum and a cervical mucus titre of at least 128. In 48 couples with a fair or good sperm penetration in cervical mucus, in vivo and in vitro, we never found a strongly positive SCMC-test. In 43 of these couples the SCMC-test was negative. Only one man in the latter group had sperm-agglutinating activity in the semen. In a group 32 couples, with a negative SCMC-test, there was no or only weak sperm-agglutinating activity in the cervical mucus, although 2 women had moderate sperm-agglutinating activity in the blood serum. Based on these data we conclude that the so called "unexplained" poor postcoital test is almost always due to the presence of antisperm antibodies in the semen or in the cervical mucus. We consider the SCMC-test not only to be a simple and reliable technique for detecting the presence of these antisperm antibodies, but also a method of demonstrating the mechanism by which antisperm antibodies decrease the chance of conception.

Antibodies↗
PubMed1976

The sperm-cervical mucus contact test: a preliminary report.

Infertility in men and women with spermagglutinins is the result of disturbed penetration and migration of spermatozoa in the cervical mucus. In ejaculates with partial spermagglutination caused by autoimmunization, the progressive propulsion of the sperm was changed into stationary, shaking movement the moment the sperm came into contact with cervical mucus. The same alteration in spermatozoal motility pattern also occurred when spermatozoa from a normal, fertile ejaculate came into contact with cervical mucus of a woman whose serum contained sperm antibodies. This shaking phenomenon was visualized in a simple test, the sperm-cervical mucus contact test. We demonstrated that sensitized spermatozoa exhibit the shaking phenomenon after contact with the glycoprotein fraction of the cervical mucus and not after contact with the aqueous fraction. Therefore, the hypothesis is introduced that the shaking phenomenon is due to an interaction between sensitized spermatozoa and the glycoprotein micelles in cervical mucus.

Autoantibodies↗
PubMedDate not supplied

Hypo-osmotic sperm swelling test does not assess fertilizing capacity of human spermatozoa.

The hypo-osmotic sperm swelling (HOSS) test was performed on semen samples of five normospermic men from couples with prolonged infertility. Previously, the men had negative results of the zona-free hamster oocyte (ZFHO) test on two different ejaculates and the wives subsequently had become pregnant by donor insemination. A high swelling percentage (at least 60%) was found in all five men. It would appear that the HOSS test does not assess fertilizing capacity.

Animals↗