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Pharmacology and Clinical Pharmacology of Methylarginines Used as Inhibitors of Nitric Oxide Synthases

[ Vol. 20 , Issue. 22 ]


Anja Kittel and Renke Maas   Pages 3530 - 3547 ( 18 )


The methylarginines asymmetric dimethylarginine (ADMA) and monomethylarginine (L-NMMA) are endogenously formed inhibitors of nitric oxide synthases (NOS), which have extensively been investigated as risk markers and used as pharmacological tools to study the L-arginine-nitric oxide (NO) pathway in vitro and in vivo. It is the aim of the present review to summarize the clinical and experimental data on the pharmacological properties that are of relevance when planning and conducting experiments and clinical studies involving methylarginines. Key pharmacodynamic and pharmacokinetic data including IC<sub>50</sub> values of ADMA and L-NMMA for NOS isoforms and transport proteins, as well as metabolism by dimethylarginine dimethylaminohydrolases (DDAH1 and DDAH2) and alanine-glyoxylate aminotransferase 2 (AGXT2) are discussed.


Asymmetric dimethylarginine (ADMA), Symmetric dimethylarginine (SDMA), Monomethylarginine (L-NMMA), Nitric oxide synthase (NOS), Dimethylarginine dimethylaminohydrolase (DDAH), Alanine-glyoxylate aminotransferase 2 (AGXT2).


, Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universitat Erlangen-Nurnberg, Fahrstra&#223;e 17, 91054 Erlangen, Germany.

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