Active clinical trials for "Infertility"

Varicocele is a major contributor in male infertility. The improvement of sperm parameters after varicocelectomy supports this contribution. The pathophysiological mechanisms of varicocele-induced male infertility are still under investigation. Cystatin C (Cys C) and endoglin are secreted glycoproteins that recently linked to several cellular changes common in varicocele like apoptosis and autophagy.

Azoospermia is defined as the complete absence of spermatozoa in the ejaculate. Two-thirds of azoospermic patients have non-obstructive azoospermia (NOA); the latter comprises up to 10% of infertile men overall. NOA is an untreatable testicular disorder associated with spermatogenic failure and is the most severe male infertility phenotype. Among the available surgical sperm retrieval techniques, microdissection testicular sperm extraction (micro-TESE) is the procedure of choice due to its high sperm retrieval success rates (SRR), minimal tissue extraction, and low complication rates. Even with the use of micro-TESE, the likelihood of retrieving sperm in patients with NOA remain suboptimal (40% to 60%). Hypogonadism is detected in approximately half of the patients with NOA. Given the role of intratesticular testosterone (ITT) levels for spermatogenesis, some studies have explored the clinical utility of testosterone optimization by medical therapy before sperm retrieval. Moreover, some investigators have hypothesized that the follicle-stimulating hormone (FSH) reset might increase the expression of FSH receptors and improve Sertoli cell function. Hormonal therapy with human chorionic gonadotropin (hCG) has been shown to improve ITT production and decrease FSH levels in patients with NOA. The investigators, therefore, designed an observational cohort study aiming to evaluate whether hormone stimulation with gonadotropins (e.g., hCG alone or combined with FSH) previous to micro-TESE increases sperm retrieval rates in hypogonadal infertile men with NOA, candidates for sperm retrieval. The investigators hypothesize that optimizing ITT production and resetting FSH levels may improve spermatogenesis and successful sperm recovery.

the study aims to investigate the effectiveness of Transdermal lidocaine patch for Pain Control During Hysterosalpingography

Vitamin D receptors are present and differently expressed in murine endometrium and ovary throughout the estrous cycle , whereas knock-out experiments have shown that vitamin D receptor null mice experience uterine hypoplasia and impaired folliculogenesis. Only few retrospective studies examining the role of vitamin D levels in infertile patients have been published up to date, whereas results are strongly contradictory, with some supporting that maternal vitamin D deficiency is associated with lower pregnancy rates and others demonstrating that vitamin D deficiency does not affect final reproductive outcome. Finally, a recent retrospective study postulated that vitamin D deficiency may negatively affect pregnancy rates with an effect mediated through the endometrium, given that vitamin D deficiency was not correlated with ovarian stimulation characteristics or with markers of embryo quality in this study. In order to examine a potential negative effect of vitamin D deficiency on pregnancy rates, mediated through the endometrium, the aim of the current study was to examine the impact of vitamin D levels on pregnancy rates only in an infertile population undergoing embryo transfer of frozen-thawed embryos.

Accurate assessment of the size of follicles is important in IVF treatment.Timing of oocyte maturation and subsequent egg collection is largely based on follicle size. An accurate assessment of follicle size and appropriate timing of HCG result in retrieval of more mature oocytes, improved fertilization and higher pregnancy rates. in 3D technology- fter the capturing of a 3D image of an ovary, SonoAVC automatically analyzes the volume dataset, identifies the boundaries of hypoechoic follicles, and provides estimates of their absolute dimensions. These measurements include the largest diameters in three orthogonal planes, the mean follicular diameter (MFD), the volume of the follicle, and the volume-based diameter (d(V)) of the follicle. In the current study the investigators aim to evaluate the use of this automated technique of follicle measurement vs. standard 2D technology on the timing of oocyte maturation and subsequent oocyte retrieval. The investigators speculate that 3D assessment will increase the rate of mature oocyte collection, and eventually will improve other treatment outcomes such as fertilization rate.

Many human and animal studies over the past 40 years have revealed that ovaries and Fallopian tubes have a lower temperature than core body temperature, especially around the time of ovulation and early embryo development. Whether average core body temperature, 37 degrees Celsius, is ideal temperature for culture has not been prospectively evaluated. The purpose of this study is to determine whether lowering the incubator temperature by 1 degree Celsius will result in meaningful improvements in embryo development and pregnancy rates. Patients participating in this study will undergo routine in vitro fertilization (IVF) stimulation. Following egg retrieval, patients with at least 8 mature eggs will have those eggs divided randomly into two groups. Both groups will then under ICSI (intra-cytoplasmic sperm injection) to fertilize the eggs. The groups will randomly be assigned to control or study condition. The control condition group will be cultured at 37 degrees Celsius, the current standard of care. The study group will be cultured at 36 degrees Celsius. All other culture conditions will be kept identical and embryos will be assessed on day 3 and day 5 of development. On day 5, all well-developed blastocysts will undergo biopsy for Comprehensive Chromosomal Screening (CCS), which will evaluate the chromosomal normalcy of the embryo . Patients will undergo transfer on the morning of day 6 and the highest quality, chromosomally normal embryo from each group (the 36 degree cultured embryos and the 37 degree cultured embryos) will be transferred. If only 1 embryo is available for transfer, the patient will have a single embryo transfer. All embryos available for cryopreservation will undergo biopsy for CCS before being frozen. Some arrested embryos from each temperature group will also undergo genetic analysis to evaluate chromosomal normalcy or mosaicism. The female patient will undergo a blood draw at 9 weeks gestation and buccal swabs will be obtained from the infant(s) after birth.

To explore whether Free androgen index（FAI）can be regarded as biochemically diagnostic indexes of high androgen hormone in blood of patients with Polycentric ovary syndrome（PCOS）. Also to explore whether Sex hormone-binding globulin（SHBG） and FAI can be seen as therapeutic effect indicatrixes of women with PCOS.

This prospective study collected safety information from more than 600 participants treated with Pergoveris®. During the Post-Marketing Surveillance (PMS) period, data about the participant's background, participant's medical history, Pergoveris® indication, prior infertility medication, Pergoveris® treatment status, concomitant drugs, all adverse events (regardless of the causal relationship to Pergoveris®) and efficacy (follicular growth and clinical pregnancy) were collected for study purposes.The post marketing surveillance was based on all cases treated with Pergoveris®.

This non-interventional study (NIS) is planned to examine the consistency of the dose recommended by the doctor for the first stimulation day with the dose recommended by the CONSORT calculator.

The development of recombinant DNA technology, culminated in the introduction of the first recombinant human follicle stimulating hormone (r hFSH), Gonal-f, which further developed to become Gonal-f Filled-by-Mass (FbM) pen has been used in the fertility treatment since many years. It has been found that subjects using the pen found it less stressful, easier to use and more convenient than a conventional syringe and would recommend the prefilled pen to another woman considering gonadotropin treatment. However, the use of the Gonal-f (FbM) pen between Serbian subjects is on a very low level though the Gonal f vials with the 75 IU of follitropin alfa have been present in Serbian market since 2003. On the contrary from the clinical practice in European countries, Serbian subjects usually receive daily dose of injectable gonadotropins at the IVF clinics or by partner/family member. This open-label, multicentric, observational non-interventional study is designed with the aim to know the reason of Serbian subjects not injecting themselves with Gonal f and the quality of life (QoL) of Serbian women/couples with the infertility problem.