U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

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Showing 2571 - 2580 of 3565 results

Corticotropin is a polypeptide hormone produced and secreted by the pituitary gland. Corticotropin acts through the stimulation of cell surface the adrenocorticotropic hormone (ACTH) receptors, which are primarily located on the adrenocortical cells. Corticotropin stimulates the cortex of the adrenal gland and boosts the synthesis of corticosteroids, mainly glucocorticoids but also sex steroids (androgens). Corticotropin is indicated as monotherapy for the treatment of exacerbations of multiple sclerosis in adults and infantile spasms in infants and children under 2 years of age. Controlled clinical trials have shown Corticotropin to be effective in speeding the resolution of acute exacerbations of multiple sclerosis. However, there is no evidence that it affects the ultimate outcome or natural history of the disease. The mechanism of action of Corticotropin in the treatment of infantile spasms is unknown.
Argipressin is a neurohypophysial hormone from the vasopressin hormone family. Its two primary functions are to retain water in the body and to constrict blood vessels. The antidiuretic action of Argipressin is ascribed to increase in reabsorption of water by the renal tubules. Argipressin can cause contraction of smooth muscle of the gastrointestinal tract, gall bladder, urinary bladder and all parts of the vascular bed, especially the capillaries, small arterioles and venules with less effect on the smooth musculature of the large veins. Agripressin for injections is used for use in diabetes insipidus, when this is not of nephrogenic origin and control of bleeding from oesophageal varices. In addition, argipressin is indicated to increase blood pressure in adults with vasodilatory shock (e.g., post-cardiotomy or sepsis) who remain hypotensive despite fluids and catecholamines.
More than a century ago, Sir Henry Dale demonstrated that a component of the pituitary causes contractions of the mammalian uterus, hence his coining the term “oxytocic,” derived from the Greek for “quick birth,” for its activity. The discovery that a component of the pituitary causes milk secretion followed within a few years. By 1930, oxytocin was separated from vasopressin into pitocin and pitressin, respectively, at Parke Davis and made available for research. That a single peptide was responsible for these uterine and mammary actions was definitively confirmed upon the sequencing and synthesis of the peptide, 9 amino acids in length. Vincent du Vigneaud was awarded a Nobel Prize for this work. Oxytocin is indicated for the initiation or improvement of uterine contractions, where this is desirable and considered suitable for reasons of fetal or maternal concern, in order to achieve vaginal delivery. Oxytocin is indicated to produce uterine contractions during the third stage of labor and to control postpartum bleeding or hemorrhage. Uterine motility depends on the formation of the contractile protein actomyosin under the influence of the Ca2+- dependent phosphorylating enzyme myosin light-chain kinase. Oxytocin promotes contractions by increasing the intracellular Ca2+. Oxytocin has specific receptors in the myometrium and the receptor concentration increases greatly during pregnancy, reaching a maximum in early labor at term. The Oxytocin receptor is a typical class I G protein-coupled receptor that is primarily coupled via G(q) proteins to phospholipase C-beta. The high-affinity receptor state requires both Mg(2+) and cholesterol, which probably function as allosteric modulators. The agonist-binding region of the receptor has been characterized by mutagenesis and molecular modeling and is different from the antagonist binding site. The function and physiological regulation of the Oxytocin system is strongly steroid dependent.
Status:
Investigational
Source:
NCT00873561: Phase 1 Interventional Completed Type 1 Diabetes Mellitus
(2001)
Source URL:

Class:
PROTEIN

NBI-6024 belongs to a proprietary altered peptide ligand (APL) technology developed by Neurocrine Biosciences for the treatment of autoimmune diseases. It is an altered peptide ligand that is designed to cause an immune response which result in preservation of beta-cell function and endogenous insulin production. NBI-6024 corresponds to the 9-23 amino acid region of the insulin B chain (B(9-23)), an epitope recognized by inflammatory interferon-gamma-producing T helper (Th)1 lymphocytes in type 1 diabetic patients. NBI-6024 is designed specifically to generate an immune response that could result in preservation of beta-islet cell function in patients with Type I diabetes or juvenile-onset diabetes. Because there is progressive beta-islet destruction in Type I diabetes, an early intervention strategy with a product like NBI-6024 could delay or prevent insulin dependence.
Status:
Investigational
Source:
NCT02637284: Phase 1 Interventional Unknown status Healthy Volunteers
(2015)
Source URL:

Class:
PROTEIN

Body protective compound – 15 also known as bepecin, BPC 157 or PL 14736, a small, chemically synthesized pentadecapeptide which has been shown to be safe in clinical trials for inflammatory bowel disease and may be able to cure intestinal anastomosis dehiscence. BPC 157 also was involved in phase I development in Ulcerative colitis, however, no reports of development identified. Recently published article has described that BPC 157 had huge potential as a therapy to conservatively treat or aid recovery in hypovascular and hypocellular soft tissues such as tendon and ligaments. Although is still a need to understand the precise healing mechanisms for this therapy to achieve clinical realization.

Showing 2571 - 2580 of 3565 results