Search PubMed⌕ Search

Biomedical subjects

R D Amelar

Publications and source records attributed to R D Amelar.

At least 19 recordsLinked to original sources
PubMed1979

Frozen semen -- a poor form of fertility insurance.

Two previously fertile males have requested surgical vasectomy reversal after divorce and failure of their new younger wives to conceive by repeated inseminations with their stored frozen semen. The sperm had been preserved for six and five years, respectively, as "fertility insurance" prior to sterilization by bilateral vasectomy. It is clear that the storage of fertile semen does not guarantee future fertility.

Adult↗
PubMed1979

Successful management of infertility due to polyzoospermia.

Polyzoospermia is a rare cause of male infertility. In our clinical practice, patients with exceedingly high sperm counts (ranging from 650 million/ml to 1.75 billion/ml) have invariably been found to have associated poor sperm motility and poor sperm migration in postcoital tests, although the sperm appear morphologically normal. Cases of two infertile couples are presented in which each husband had sperm counts greater than 1 billion/ml. Two methods are reported for the successful management of their infertility problems: (1) precoital dilutional douching and (2) in vitro seminal fluid dilution with 5% dextrose-Ringer's lactate solution and artificial insemination homologous. Each method resulted in improved sperm motility, postcoital tests, and pregnancy.

Adult↗
PubMed1979

Prolactin, fructose, and zinc levels found in human seminal plasma.

Fructose, zinc, and prolactin determinations were performed on the seminal plasma of normospermic (n = 30), oligospermic (n = 30), and azoospermic (n = 30) men to determine whether there was a correlation between any of these substances and seminal quality. None of these azoospermic men had congenital bilateral absence of the vasa, but in a separate group of such men (n = 10) these same studies were performed. Fructose was determined photometrically, zinc by atomic absorption, and prolactin by radioimmunoassay. Zinc and fructose levels in all three groups showed no statistical differences. Prolactin was found to be significantly higher in the seminal plasma of normospermic men than was found in the seminal plasma of oligospermic or azoospermic men. In men with congenital bilateral absence of the vasa and seminal vesicles, zinc was elevated, fructose was absent, and prolactin was markedly depressed.

Fructose↗
PubMed1978

Sperm antibody testing in infertile men.

Six hundred male patients were examined for circulating spermagglutinating antibodies by the Kibrick sperm-agglutination test and 20% demonstrated autoantibodies. The high incidence of positive findings may be explained by the select population studied. Of 80 men tested who demonstrated more than 10% agglutination in their semen, but were otherwise normospermic, 41% demonstrated positive titers by the Kibrick method. Of 300 men examined for circulating sperm-immobilizing antibodies by the Isojima sperm-immobilizing test, 6% had autoantibodies. This high incidence of positive findings demonstrates the need for these tests in males who otherwise appear normospermic or demonstrate an unexplained infertility.

Autoantibodies↗
PubMed1978

Follicle-stimulating hormone, luteinizing hormone, and testosterone levels found in human seminal plasma.

Radioimmunoassays were performed on the seminal plasma of normospermic, oligospermic, and azoospermic men to determine the levels of luteinizing hormone (LH), follicle-stimulating hormone (FSH), and testosterone. FSH levels in the seminal plasma of all three groups were found to be similar to the levels normally found in blood serum. LH levels in the seminal plasma of azoospermic and oligospermic men were within the normal range found in blood serum but were elevated in the normospermic samples. Testosterone levels in the seminal plasma of all three groups tested were considerably lower than the normal range found in blood serum.

Follicle Stimulating Hormone↗
PubMed1978

Evaluation of a new silastic seminal fluid collection device.

A new Silastic seminal fluid collection device has been tested and compared in vitro with glass jars, latex condoms, and the Milex polyethylene sheath. In a series of tests utilizing 50 different semen samples and observing the effects on motility over a period of 4 hours, the Silastic seminal fluid collection device demonstrated sperm survival slightly better than that with glass jars, superior to that with the polyethylene Milex sheath, and far greater survival (by several hours) than with the latex condom. The Silastic collection device was found to be more comfortable and more pleasurable to the patients than was the Milex sheath. The accuracy of seminal volume measurements was also found to be better in the Silastic collection device.

Contraceptive Devices, Male↗
PubMed1978

Varicocele.

Explore the source record for details and available documents.

Humans↗
PubMed1977

Male infertility practice and Orthodox Jewish law.

The evaluation and management of infertility problems in Orthodox Jewish couples can be made difficult because of restrictions which may be imposed by religious rules. The origins of the religious laws governing semen collection, diagnostic and therapeutic genital surgery, menstruation, and homologous and donor insemination are reviewed. Contemporary rabbinic authorities are quoted; their opinions may serve as guidelines for the patient and urologist dealing with infertility problems.

Female↗
PubMed1977

Varicocelectomy: 986 cases in a twelve-year study.

Over a twelve-year period, surgical correction of varicocele was performed on 986 selected subfertile men. They were followed up for at least two years after surgery. Semen quality was improved in 70 per cent, and 53 per cent of the wives became pregnant. Statistically, the results were better in terms of semen quality improvement and pregnancy for patients who had preoperative sperm counts over 10 million per milliliter (85 per cent improved, 70 per cent pregnancy rate) than for patients who had preoperative sperm counts of less than 10 million per milliliter (35 per cent improved, 27 per cent pregnancy rate). The empirical use of postoperative human chorionic gonadotropin therapy in this latter group improved results significantly (55 per cent improved, 45 per cent pregnancy rate).

Female↗