View clinical trials related to Azoospermia.
Filter by:Preliminary reports showed that hormonal treatment may improve the chance of retrieving viable testicular sperm from men with NOA. It was generally believed that gonadotrophin treatment would be ineffective in the presence of high plasma levels of endogenous gonadotrophin.The purpose of this study is to determine whether GnRHa(gonadotropin-releasing hormone agonist) combined with hCG(human chorionic gonadotropin) and hMG(human menopausal gonadotropin) are effective in the treatment of non-obstructive azoospermia.
Needle aspiration of the epididymis causes rupture and irreversible damage to the duct. Recurring punctures and needle aspirations of fluid and tissue during Testicular Fine Needle Aspiration (TEFNA) procedure cause irreparable injury and loss of part of the testis' tubules. The hypothesis of this research is that production of sperm from the testis will be improved due to ultrasonically guided Rete Testis needle aspiration. In cases of Obstructive Azoospermia, the Rete Testis is expected to contain a large number of sperm cells. In cases of Non-Obstructive Azoospermia, the investigators can expect to produce sperm cells from aspiration of the Rete Testis, which drains all of the testis' tubules. Furthermore, catheterization of the Rete Testis will allow for the drainage of all testes tubules and for the production of sperm cells created locally in some of the tubules or in parts of them. The potential advantage of needle aspiration from the Rete Testis is that the procedure will allow for the aspiration from all the testes tubules, as opposed to the standard method of sperm cells production from the testis which samples only some of the tubules. Therefore, it is expected that the procedure suggested in this research will be more efficient than the standard procedures currently in practice. An additional advantage to this procedure is that puncture and aspiration of the tubule network is not expected to block the drainage from the testis, as is the case in aspiration of the epididymis, and it is also not expected to damage the tubules, as is the case in TEFNA and in TESE.
Klinefelter syndrome KS is caused by an additional X chromosome in males (47,XXY). Clinical findings are nonspecific during childhood; thus, the diagnosis commonly is made during adolescence or adulthood in males who have small testes with hypergonadotropic hypogonadism and gynecomastia. Virtually all men with Klinefelter syndrome are infertile. Approximately one in 1,000 boys is born with an additional X chromosome—47,XXY, the karyotype that causes Klinefelter syndrome. This karyotype is detected at or before birth in 10 percent of affected boys, and it is found during adulthood in 25 percent of affected men. Almost all men with a 47,XXY karyotype will be infertile; Klinefelter syndrome accounts for 3 percent of male infertility. Klinefelter syndrome is common in infertile men with oligospermia or azoospermia (5 to 10 percent). Infertility in men with Klinefelter syndrome is caused by a precipitous drop in sperm count. If sperm are present, cryopreservation is useful for future family planning with intracytoplasmic sperm injection, and if not, testicular sperm extraction may be pursued. Although there have been multiple reports of successful fertilization by men with Klinefelter syndrome. Mesenchymal stem cell injection in testicular tubules and intra testicular artery using surgical microscope. The period for follow up last from three months to twelve months including semen analysis to detect sperm and hormonal profile .
The aim of this study was to assess meiotic recombination in primary spermatocytes, synaptonemal complex length and the correlation with chromosomal abnormalities in testicular spermatozoa from infertile men with idiopathic non-obstructive azoospermia (NOA).
The purpose of this study is to determine whether uFSH is effective and safe in the treatment of male patients with severe oligospermia or azoospermia.
This study will include cryopreserved sperm from infertile azoospermic men, with proven diagnosis of varicocele (clinical & sonographic), which will be used for ICSI in an ART program in Sohag. Patients personal and medical history and socio-demographic data will be retrieved from their saved medical files.
Aim of the study is to evaluate the effect of highly purified human follicle-stimulating hormone treatment on the chance of retrieving testicular sperm (sperm retrieval rate) from infertile male patients with non-obstructive azoospermia of unknown origin.
Estradiol and Testosterone are two important hormones for the regulation of an effective spermatogenesis in human testis. The evaluation of levels of estradiol and testosterone in seminal plasma of men with non-obstructive azoospermia may be a predictive test before surgical testicular biopsy to determine the chance of a positive sperm extraction to use for ICSI.
Hypothesis: Prescribed clomiphene citrate to azoospermic patients with hypoandrogenism could improve the sperm retrieval in either fresh sperm or after surgical sperm extraction.
Compare FDG PET-CT parameters between azoospermia patients having an extraction of sperm cells by positive testicular extraction and those with a negative extraction.