View clinical trials related to Gonadal Dysgenesis.
Filter by:To explore the dose-response relationship between pharmacokinetics and pharmacodynamics of Y- Shaped Pegylated growth hormone injection (YPEG-GH) in children with short stature (idiopathic short stature (ISS), small for gestational age (SGA), Turner syndrome (TS)). To evaluate its tolerability, safety and efficacy and to provide evidence for dose selection and titration for future clinical development and clinical application in these population.
Liver abnormalities are common in Turner syndrome. The physiopathology of these abnormalities is unknown for the moment but their potentially serious evolution requires additional explorations.
Turner syndrome (TS) is a genetic disorder in which there is loss of all or part of the second X chromosome and occurs in 1/2500 live female births. TS is characterized by short stature and endocrine abnormalities, such as the loss of ovarian function (Gonadal dysgenesis) and estrogen deficiency. The absence of pubertal development is one of the most common clinical features of patients with TS, who should have experienced a sex hormone surge if the hypothalamic-pituitary-gonadal axis was activated normally . Gonadarche and adrenarche are regarded as processes that are independent of each other. The function of adrenal gland is independent of true (central/complete/gonadotropin- dependent) puberty . Adrenal androgen in Turner syndrome shows a wide spectrum, ranging from normal to highly elevated. X-linked genes affect the brain in at least two ways: by directly acting on the brain and by indirectly acting on the gonads to induce differences in specific gonadal secretions (i.e., hormones) that have specific effects on brain development. The changes in brain and behavioral/ cognitive phenotypes in TS individuals may be the result of a direct genetic factor, an indirect hormonal factor, or a combination of the two factors . To evaluate direct effect of X chromosome, a lot of neuroimaging studies have revealed both neuroanatomical and neurofunctional changes in patients with TS. S. C. Mueller (2013) reported that oestrogen deficiency exhibits paradoxical healthy male-like patterns (i.e., a larger amygdala but reduced hippocampal volume). This finding confirms the indirect hormonal effect on the brain that are likely attributed to the effect of androgen on the brain or may be due to active role of estrogen in feminization of brain . The cognitive phenotypes of TS include severe deficits in multiple cognitive domains: visual-spatial ability, mathematical processing, and social cognition. Regarding intelligence, numerous TS studies have a lower performance IQ in contrast to a within-normal verbal IQ in TS individuals . The presence of hypogonadism with normal or may be elevated adrenal function in girls with turner syndrome provide a model to study the hormonal effect of adrenal androgen in absence of estrogen on gender-role behavior. Ehrhardt et al (1970) reported that Women with TS are described as clearly feminine in their behavior and interests . To the best of our knowledge, there have been no previous studies on the correlation between level of adrenal androgen and gender-typed behavior in Girls with TS.
Background: Turner syndrome (TS) is caused by the partial or complete absence of one of the two X chromosomes in all cells or a portion of cells. Adolescents and young adults (AYAs) with TS and their families are not routinely counseled about fertility issues and options. Researchers want to learn more about the attitudes of AYAs with TS and their parents or guardians regarding future fertility. Objective: To create and distribute a survey for AYAs with TS and their parents or guardians that will improve understanding about their attitudes toward fertility, fertility preservation, and options for building a family. Eligibility: Female AYAs aged 12-25 years with TS, and parents or guardians of AYAs with TS. Design: Participants will be put into 3 focus groups: females ages 12-17 with TS; females ages 18-25 with TS; and parents or guardians of AYAs with TS. Each focus group session will be held via Zoom. Participants can use video or just audio for the session. They will use their first name. If they prefer, they can use a pseudonym. Each group will meet once. The session will last 90 minutes. Participants will receive a draft of the survey. The survey questions ask about fertility and pregnancy. Participants will evaluate the usefulness and relevance of each question. They will be asked if any question should be changed. The survey will be finalized based on their feedback. The final survey will be distributed through TS groups. Participation will last for 1 day....
This study evaluates the effect of a specific, multidisciplinary and personalized rehabilitation program compared to usual care, on motor control and functional disability in patients with neuralgic amyotrophy. Half of the participants will start with the 17-week specific rehabilitation program while the other half will first continue their usual care for 17 weeks, after which they will also receive the 17-week specific rehabilitation program.
This study plans to learn more about how the energy system works in girls with Turner syndrome. This is important to know so that the investigators understand how Turner syndrome relates to diseases such as diabetes, extra weight gain, heart disease and liver disease, and how this impacts day to day life.
The purpose of this study is to assess the ease of use, preference, and safety after 8 weeks subcutaneous administration of EutropinPen Inj. in patients pretreated with recombinant human growth hormone by reusable device.
The purpose of this research is providing valuable traditional chinese medicine theory and formula in treating Primary Ovarian insufficiency.
The polycystic ovary syndrome (PCOS) is the most common endocrinopathy amongst women of reproductive age. PCOS is associated with various cardiovascular risk factors such as obesity, glucose intolerance, dyslipidemia hypertension and the metabolic syndrome. Whether these increased cardiovascular risk factors result in the development of actual cardiovascular disease in later life remains to be established. Women with premature ovarian insufficiency (POI), experience menopause prior to the age of 40 years. Women with POI may exhibit dyslipidemia. A young age at menopause has been previously associated with increased cardiovascular morbidity and mortality.
The primary objective of this study is to determine whether specific patterns of circulating micro-ribonucleic acids (miRNAs) are associated with aortic aneurysm and dissection in patients with hereditary aortopathy syndromes. The most common of these syndromes is Marfan Syndrome (MFS), but several other recognized aortopathy syndromes are well characterized. The investigators propose the use of a simple blood test, from which miRNA profiles can be measured in individuals with aortopathy syndromes to be compared with miRNAs observed in a control population that has no known predisposition for aortic disease. The investigators hypothesize that microRNA profiles in individuals with Marfan syndrome, and related disorders, will be distinct from those seen in a control group. The investigators predict that up- or down-regulation of certain miRNAs will correlate with the presence and severity of aortic aneurysm, responses to medical therapy, and ultimately could be used to determine when an individual may be at risk of dissection.