Active clinical trials for "Hypopituitarism"

Deficiency of testosterone, growth hormone, or both hormones can result in osteoporosis. If either hormone is replaced, the condition of the bones improves. The purpose of this study is to determine if dual hormone treatment for men deficient in testosterone and growth hormone improves bone structure more than testosterone treatment alone.

In growth hormone deficient patients: Determination of endogenous circulating ghrelin levels, ghrelin effects on insulin sensitivity, appetite, energy metabolism, and signal transduction in fat and muscle.

The purpose of this study is to determine whether a body weight adjusted dose of thyroxin is superior to treatment guided by laboratory results of thyroxin hormones in patients with central hypothyroidism. Moreover beneficial effects of triiodthyronine supplementation are investigated.

Hypotheses: The prevalence of endocrinopathies, and growth hormone (GH) deficiency in particular, among young children diagnosed with optic nerve hypoplasia (ONH) is higher than is commonly thought. Early treatment of children with ONH and GH-deficiency can prevent adverse outcomes. Aims: Determine the prevalence and types of endocrinopathies in children diagnosed with ONH. Correlate endocrine outcome with radiographic, ocular, and developmental findings in children with ONH. Examine the effect of GH treatment on growth and obesity in children with ONH, GH-deficiency, and either subnormal or normal growth compared to children with ONH that are not GH-deficient. Compare growth outcomes between children with isolated GH-deficiency and those with multiple hormone deficiencies.

Patients with Growth hormone (GH) deficiency often report impaired quality of life and difficulty with mental functioning. It has been suggested that GH replacement in such patients leads to improvement in cognitive function. The aim of this study is to elucidate the effects of GH replacement in patients with GH deficiency on cognitive function using structural and functional neuroimaging and cognitive testing.

This is a study to determine whether testosterone replacement with TheraDerm can improve bone density, mood, sex drive, thinking, and distribution of body fat and muscle mass in women with hypopituitarism.

The pituitary gland is a small pea-sized gland that produces a variety of important hormones. Some children are born with a deficient production of two or more pituitary hormones. This rare and potentially severe disease is called congenital combined pituitary hormone deficiency (cCPHD). cCPHD can cause many different symptoms, some of which appear shortly after birth and others later in childhood. Symptoms that appear shortly after birth are e.g., development of very low blood sugar, disturbances in the salt balance, and severe dehydration, whereas symptoms that appear later in life are short stature, missing pubertal development, fatigue, and sensitiveness to cold. Fortunately, it is possible to replace the missing hormones. Currently, it is unknown how common cCPHD is. Therefore, the investigators wish to examine 1) how many children are diagnosed with cCPHD before the age of 18 years, 2) how many children are diagnosed with cCPHD at age <1 year, 1-8 years, 9-17 years, and 3) the patients' hormone deficiency characteristics and brain MRI scans. The investigators will identify the patients by searching for diagnosis codes used for pituitary disease and pituitary malformations in the Danish National Patient Registry and locally at the four hospitals approved for the treatment of cCPHD in children. Through the searches, the investigators expect to identify approximately 1500 patients. The investigators will then review the hospital files of all identified patients to exclude patients with only one hormone deficiency and patients with an acquired cause of the disease. The investigators aim to include all cCPHD patients in Denmark born in the period 1996 and 2020.

The effects of acute administration of non-steroidal anti-inflammatory drugs (NSAIDs) on the neuroendocrine regulation of hydro-electrolytic metabolism are not precisely known to date. Although the mechanism by which NSAIDs favor the antidiuretic action of vasopressin (AVP) in the kidney has been partially elucidated, their influence on the mechanisms responsible for regulating its secretion are less known. The interactions between NSAIDs and natriuretic peptides are also not entirely certain. The present pharmacological research study therefore aims to investigate, in a cohort of healthy subjects, the acute effects of intravenous infusion of diclofenac sodium on the neuroendocrine regulation systems of water and salt balance (i.e. the antidiuretic axis and the system of natriuretic peptides).

The diagnosis of secondary hypoadrenalism and GH deficiency (GHD) often requires the performance of a dynamic test. The glucagon stimulation test (GST) is one of the options for evaluating hypothalamic-pituitary function, representing a stimulus for both the corticotropic and somatotropic axis, substantially safe and easily available. The standard procedure involves the intramuscular injection of 1-1.5 mg of glucagon based on the patient's weight. In addition to its antero-pituitary function, glucagon has also shown its ability to stimulate neurohypophyseal secretion. Using the copeptin dosage, it has been shown that after the administration of glucagon in healthy subjects there is a significant release of ADH. However, the available data are scarse and there is no standardized protocol for the use of the glucagon test in diabetes insipidus. At the moment, GST is not the most frequently chosen diagnostic option. In fact, despite having the advantage of being able to investigate different areas of anterohypophyseal and probably posterohypophyseal function at the same time, the test has some disadvantages: the prolonged duration makes the procedure challenging, the intramuscular injection can be unwelcome, and many variables can come into play in the definition of a normal response (age, BMI, glycemic status). The recent introduction of a single-dose nasal powder formulation (Baqsimi®) could overcome some of the limitations of classic GST and make the procedure less demanding. To date, no assessments are yet available regarding a purely diagnostic role in the context of hypopituitarism of this new formulation. Through the knowledge of the physiological response of the adrenocortical, somatotropic and ADH axis to the administration of intranasal glucagon in healthy subjects, it will be possible to evaluate its possible application in the diagnosis of GH deficiency, central adrenal insufficiency and possibly diabetes insipidus.

Objectives: To establish valid serum total cortisol and salivary cut-offs for use with the short Synacthen test in patients with normal CBG concentrations. To investigate, using current assays, the effect of assay differences on the serum total cortisol cut-off. To explore the performance of these cut-offs in groups of patients with suspected adrenal insufficiency and high and low serum CBG concentration. Methodology: An ACTH test (250 micrograms iv ACTH1-24) will be undertaken in healthy volunteers, women taking an oestrogen-containing oral contraceptive pill (OCP), patients with adrenal insufficiency and patients with low serum albumin. Serum cortisol in the samples collected from healthy volunteers will be measured using GC-MS, Advia Centaur (Siemens), Architect (Abbott), Modular Analytics E170 (Roche), Immulite 2000 (Siemens) and Access (Beckman) automated immunoassays. The estimated lower reference limit for the 30 min cortisol response to ACTH, defined as the 2.5th percentile of log-transformed concentrations, will be determined in this healthy population and used as a cut-off in the patient groups studied.