Active clinical trials for "Hyperprolactinemia"

The goal of this study is to learn about the role of kisspeptin in the reproductive system. Kisspeptin is a naturally occurring hormone in humans that causes the release of other hormones, including gonadotropin-releasing hormone (GnRH) in the body.

The purpose of this study is to explore the effects of prolactin on adrenal steroid profiles in patients with hyperprolactinemia due to prolactinomas before and after initialisation of treatment.

Prolactin (PRL) and PRL receptor (PRLR) signaling has been validated to play an important role in the modulation of glucolipid metabolism. However, the role of serum PRL levels in gestational diabetes mellitus (GDM) remains unclear. The investigators aimed to explore the possible influence of serum PRL within or without normal range on the development of GDM.

Systemic sclerosis is an autoimmune and inflammatory disease characterized primarily by fibrosis and vascular involvement. We know that the immune system is disrupted in systemic sclerosis, but there are probably other mechanisms to explain the disease, including deregulation of certain proteins such as prolactin

The purpose of this study is to investigate the treatment and natural history of pituitary disease. We have a longstanding interest in pituitary disease including acromegaly, central diabetes insipidus, and nonfunctioning pituitary adenoma. We will continue to follow patients and recruit new patients for treatment and follow-up. Blood and pituitary tumor tissue (when available through clinical care) will be saved for future analyses related to pituitary disease.

The objectives of this study are: To determine the prevalence and degree of hyperprolactinemia in children and adolescents aged 7-18 years receiving antipsychotic medications To determine the associations between serum-prolactin and sex hormones / metabolic biomarkers/ clinical symptoms in this population. If clinically relevant associations are found: To determine a potentially existing "no harm" serum-prolactin threshold To determine associations between previous cumulative prolactin-exposure and current pubertal development / growth

The purpose of this study is to develop a new protocol using two different types of fertility drugs that is more similar to the way the hormones act in a normal menstrual cycle (period). We are recruiting women who are trying to get pregnant through In Vitro Fertilization (IVF) who either have a high prolactin level (a hormone normally found in your blood that is produced in the brain) or have a condition known as hypothalamic amenorrhea in which one does not get regular periods due to low hormone levels. The ovaries can be stimulated with Follicle Stimulating Hormone (FSH) alone and with FSH and Luteinizing Hormone (LH). FSH causes eggs to be made while LH causes estrogen (hormone) production. The women in this study have low hormone levels and need both FSH and LH. Luveris® (LH hormone) is a new drug approved for egg production and is used in IVF. There is no set amount of LH nor a set protocol for LH use. Therefore, we are testing this new regimen. One group of women will receive a fixed dose of LH throughout their cycle while the other will decrease the dose of FSH while at the same time increasing the LH dose which is what happens in the natural menstrual cycle.

Antipsychotic medicines are used routinely in people with severe mental illness or learning disability. Antipsychotics often induce hyperprolactinemia (high prolactin level) and in almost all women, and some men, this causes hypogonadism (impaired ovarian or testicular function)often with osteoporosis, partly explaining psychiatric patients' high fracture risk. Reducing prolactin by changing antipsychotic or adding a dopamine agonist often worsens psychosis. Adding aripiprazole to current antipsychotic normalizes prolactin in adult schizophrenic patients, without serious side effects. We thus plan a study of add-on aripiprazole in people with antipsychotic induced hyperprolactinemia. Our main hypothesis is that aripiprazole will normalize or reduce prolactin sufficiently to restore normal ovarian and testicular function. Our secondary hypothesis is that restoration of normal ovarian and testicular function will improve bone mineral density in patients in whom this was reduced at the time of entry into the study.

The goal of this study is to learn more about how kisspeptin, a naturally occurring hormone, affects women with high levels of prolactin (also called hyperprolactinemia). All participants will receive kisspeptin in a pulsatile fashion. Subjects in one group will attend two 12-hour visits with frequent blood draws. Subjects in the second group will wear a pump that administers kisspeptin subcutaneously (SC) over eight days and attend seven short blood sampling visits.

Prolactin is a hormone that naturally occurs in the body. Some women taking antipsychotic medications may have high levels of prolactin in their bodies. High levels of prolactin may cause women to have problems with sex or satisfaction from sex. It may also cause women to have fewer or no menstrual periods. It may also cause the production of breast milk and may contribute to long term bone loss. In this study, the investigators are testing whether taking adding a low dose of an antipsychotic medication called aripiprazole may help improve high prolactin levels and help with sexual dysfunction or problems with menstrual periods. The investigators are also looking to see if it may slow the loss of bones. This medication has been shown to be helpful for improving symptoms of schizophrenia.