View clinical trials related to Epigenetic Disorder.
Filter by:A total of 60 men (40 with a history of infertility and treatment with assisted reproduction and 20 infertile controls achieving conception naturally) will be asked to provide at least one semen sample each for conventional semen analysis including measurement of DNA-fragmentation and semen preparation with swim-up. The prepared semen sample will then analyzed by comprehensive microscopy analyses aiming at identifying distinct subpopulations of spermatozoa based on chromatin density and composition, mitochondrial and acrosome function and epigenetic markers. In addition, spermatozoa samples of selected individuals will be subjected to comprehensive analyses of the chromatin and RNA expression status using epigenomic approaches.
The prognosis in cancer patients has improved over the years. Survivor rates have increased significantly, and paternity has become an important concern in more than 50% of young male survivors. Sperm cryopreservation before cancer treatment is highly recommendable in these patients, as a strategy to preserve their fertility due to is not possible to predict how the chemo or radiotherapy treatment will affect the spermatogenesis. The objective of this study is to evaluate if sperm after an antineoplastic treatment can be safely used. To determine the possible effects of oncological treatments in the spermatogenesis, three parameters will be analyzed, aneuploidy frequencies, DNA fragmentation in single and double-strand breaks and methylation levels to determine epigenetic changes before and after the therapy. If cancer treatment affect sperm genetic integrity, it would have a clinical impact in the offspring of these patients. Identify the different side effects of antineoplastic treatments in DNA sperm will provide a clinical improvement in order to select the best sperm sample in an IVF treatment and it will facilitate genetic counseling
This study evaluates epigenetics in morbid obese patients who are waiting for bariatric surgery. A home cardiopulmonary polygraphy is performed to evaluate for the presence of sleep-disordered breathing. The principal investigator make the decision of starting CPAP among patients with obstructive sleep apnea according to current clinical guidelines. One year follow up after bariatric surgery will be performed. A total of 5 visits will be scheduled: two of them before bariatric surgery and 3 after (3, 6 and 12 months). At every visit, all patients had: sleep questionaries, blood samples, EKG-Holter and spirometry are collected.