N-Propyl-L-arginine

	N-Propyl-L-arginine ''N''-Propyl--arginine, or more properly NG-propyl--arginine (NPA), is a selective inhibitor of neuronal nitric oxide synthase Nitric oxide synthases () (NOSs) are a family of enzymes catalyzing the production of nitric oxide (NO) from L-arginine. NO is an important biological functions of nitric oxide, cellular signaling molecule. It helps modulate vascular tone, insul ... (nNOS). Amino acids Guanidines {{organic-compound-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Asymmetric Dimethylarginine Asymmetric dimethylarginine (ADMA) is a naturally occurring chemical found in blood plasma. It is a metabolic by-product of continual protein modification processes in the cytoplasm of all human cells. It is closely related to L-arginine, a conditionally essential amino acid. ADMA interferes with L-arginine in the production of nitric oxide (NO), a key chemical involved in normal endothelial function and, by extension, cardiovascular health. Discovery Patrick Vallance and his London co-workers first noted the interference role for asymmetric dimethylarginine in the early 1990s. Today biochemical and clinical research continues into the role of ADMA in cardiovascular disease, diabetes mellitus, erectile dysfunction and certain forms of kidney disease. Synthesis and regulation in the body Asymmetric dimethylarginine is created in protein methylation, a common mechanism of post-translational protein modification. This reaction is catalyzed by an enzyme set called protein arginine N- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Methylarginine ''N''-Methylarginine is an inhibitor of nitric oxide synthase. Chemically, it is a methyl derivative of the amino acid arginine. It is used as a biochemical tool in the study of physiological role of nitric oxide. The inhibiting effect of ''N''-methylarginine on vasodilation is lower in hypertensive patients than in normal subjects, indicating endothelial dysfunction. The inhibiting effect of ''N''-methylarginine on vasodilation declines progressively with age, but has been restored with vitamin C in the oldest subjects. An example of N-methylarginine soluble form, that has been used in a number of clinical research trials can be found here. See also * Asymmetric dimethylarginine Asymmetric dimethylarginine (ADMA) is a naturally occurring chemical found in blood plasma. It is a metabolic by-product of continual protein modification processes in the cytoplasm of all human cells. It is closely related to L-arginine, a conditi ... References {{reflist Amino acids Guanidines [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Acecarbromal Acecarbromal (INN) (brand names Sedamyl, Abasin, Carbased, Paxarel, Sedacetyl, numerous others), also known as acetylcarbromal and acetyladalin, is a hypnotic and sedative drug of the ureide (acylurea) group discovered by Bayer in 1917 that was formerly marketed in the United States and Europe. It is also used in combination with extract of quebracho and vitamin E as a treatment for erectile dysfunction under the brand name Afrodor in Europe. Acecarbromal is structurally related to the barbiturates, which are basically cyclized ureas. Prolonged use is not recommended as it can cause bromine poisoning. See also * Bromisoval * Carbromal Carbromal is a hypnotic/sedative originally synthesized in 1909 by Bayer and subsequently marketed as Adalin. The drug was later sold by Parke-Davis in combination with pentobarbital, under the name Carbrital. Synthesis Diethylmalonic acid 10 ... References Erectile dysfunction drugs GABAA receptor positive allosteric modulators ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Neuronal Nitric Oxide Synthase Nitric oxide synthases () (NOSs) are a family of enzymes catalyzing the production of nitric oxide (NO) from L-arginine. NO is an important biological functions of nitric oxide, cellular signaling molecule. It helps modulate vascular tone, insulin secretion, airway tone, and peristalsis, and is involved in angiogenesis and neural development. It may function as a retrograde neurotransmitter. Nitric oxide is mediated in mammals by the calcium in biology, calcium-calmodulin controlled isozyme, isoenzymes eNOS (endothelial NOS) and nNOS (neuronal NOS). The inducible isoform, iNOS, involved in immune response, binds calmodulin at physiologically relevant concentrations, and produces NO as an immune defense mechanism, as NO is a free radical with an unpaired electron. It is the proximate and ultimate causation, proximate cause of septic shock and may function in autoimmunity, autoimmune disease. NOS catalyzes the reaction: * 2 L-arginine + 3 nicotinamide adenine dinucleotide phosphate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Amino Acids Amino acids are organic compounds that contain both amino and carboxylic acid functional groups. Although hundreds of amino acids exist in nature, by far the most important are the alpha-amino acids, which comprise proteins. Only 22 alpha amino acids appear in the genetic code. Amino acids can be classified according to the locations of the core structural functional groups, as Alpha and beta carbon, alpha- , beta- , gamma- or delta- amino acids; other categories relate to Chemical polarity, polarity, ionization, and side chain group type (aliphatic, Open-chain compound, acyclic, aromatic, containing hydroxyl or sulfur, etc.). In the form of proteins, amino acid '' residues'' form the second-largest component (water being the largest) of human muscles and other tissues. Beyond their role as residues in proteins, amino acids participate in a number of processes such as neurotransmitter transport and biosynthesis. It is thought that they played a key role in enabling lif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]