uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Dimethylarginine dimethylaminohydrolase (DDAH): Expression, regulation and function in the cardiovascular and renal systems
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
2007 (English)In: American Journal of Physiology. Heart and Circulatory Physiology, ISSN 0363-6135, E-ISSN 1522-1539, Vol. 293, no 6, H3227-H3245 p.Article in journal (Refereed) Published
Abstract [en]

Asymmetric (NG,NG)-dimethylarginine (ADMA) inhibits nitric oxide (NO) synthases (NOS). ADMA is a risk factor for endothelial dysfunction, cardiovascular mortality, and progression of chronic kidney disease. Two isoforms of dimethylarginine dimethylaminohydrolase (DDAH) metabolize ADMA. DDAH-1 is the predominant isoform in the proximal tubules of the kidney and in the liver. These organs extract ADMA from the circulation. DDAH-2 is the predominant isoform in the vasculature, where it is found in endothelial cells adjacent to the cell membrane and in intracellular vesicles and in vascular smooth muscle cells among the myofibrils and the nuclear envelope. In vivo gene silencing of DDAH-1 in the rat and DDAH +/– mice both have increased circulating ADMA, whereas gene silencing of DDAH-2 reduces vascular NO generation and endothelium-derived relaxation factor responses. DDAH-2 also is expressed in the kidney in the macula densa and distal nephron. Angiotensin type 1 receptor activation in kidneys reduces the expression of DDAH-1 but increases the expression of DDAH-2. This rapidly evolving evidence of isoform-specific distribution and regulation of DDAH expression in the kidney and blood vessels provides potential mechanisms for nephron site-specific regulation of NO production. In this review, the recent advances in the regulation and function of DDAH enzymes, their roles in the regulation of NO generation, and their possible contribution to endothelial dysfunction in patients with cardiovascular and kidney diseases are discussed.

Place, publisher, year, edition, pages
2007. Vol. 293, no 6, H3227-H3245 p.
Keyword [en]
nitric oxide synthase, hypertension, diabetes mellitus, chronic kidney disease, asymmetric dimethylarginine
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-11923DOI: 10.1152/ajpheart.00998.2007PubMedID: 17933965OAI: oai:DiVA.org:uu-11923DiVA: diva2:39692
Available from: 2008-01-21 Created: 2008-01-21 Last updated: 2010-04-27Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMedhttp://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Retrieve&list_uids=17933965&dopt=Citation

Search in DiVA

By author/editor
Palm, Fredrik
By organisation
Department of Medical Cell Biology
In the same journal
American Journal of Physiology. Heart and Circulatory Physiology
Medical and Health Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 250 hits
ReferencesLink to record
Permanent link

Direct link