Int. J. Mol. Sci. 2012, 13(12), 15983-16004; doi:10.3390/ijms131215983

Asymmetric Dimethyarginine as Marker and Mediator in Ischemic Stroke

1,2email, 1,3,4email, 1email, 2email, 5email, 1,3email and 1,* email
Received: 28 September 2012; in revised form: 14 November 2012 / Accepted: 21 November 2012 / Published: 28 November 2012
(This article belongs to the Special Issue ADMA and Nitrergic System)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Asymmetric dimethylarginine (ADMA), an endogenous nitric oxide synthase (NOS) inhibitor, is known as mediator of endothelial cell dysfunction and atherosclerosis. Circulating ADMA levels are correlated with cardiovascular risk factors such as hypercholesterolemia, arterial hypertension, diabetes mellitus, hyperhomocysteinemia, age and smoking. Accordingly, clinical studies found evidence that increased ADMA levels are associated with a higher risk of cerebrovascular events. After the acute event of ischemic stroke, levels of ADMA and its analog symmetric dimethylarginine (SDMA) are elevated through augmentation of protein methylation and oxidative stress. Furthermore, cleavage of ADMA through dimethylarginine dimethylaminohydrolases (DDAHs) is reduced. This increase of dimethylarginines might be predictive for adverse clinical outcome. However, the definite role of ADMA after acute ischemic stroke still needs to be clarified. On the one hand, ADMA might contribute to brain injury by reduction of cerebral blood flow. On the other hand, ADMA might be involved in NOS-induced oxidative stress and excitotoxic neuronal death. In the present review, we highlight the current knowledge from clinical and experimental studies on ADMA and its role for stroke risk and ischemic brain injury in the hyperacute stage after stroke. Finally, further studies are warranted to unravel the relevance of the close association of dimethylarginines with stroke.
Keywords: asymmetric dimethylarginine (ADMA); symmetric dimethylarginine (SDMA); nitric oxide (NO); nitric oxide synthase (NOS); ischemic stroke
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MDPI and ACS Style

Chen, S.; Li, N.; Deb-Chatterji, M.; Dong, Q.; Kielstein, J.T.; Weissenborn, K.; Worthmann, H. Asymmetric Dimethyarginine as Marker and Mediator in Ischemic Stroke. Int. J. Mol. Sci. 2012, 13, 15983-16004.

AMA Style

Chen S, Li N, Deb-Chatterji M, Dong Q, Kielstein JT, Weissenborn K, Worthmann H. Asymmetric Dimethyarginine as Marker and Mediator in Ischemic Stroke. International Journal of Molecular Sciences. 2012; 13(12):15983-16004.

Chicago/Turabian Style

Chen, Shufen; Li, Na; Deb-Chatterji, Milani; Dong, Qiang; Kielstein, Jan T.; Weissenborn, Karin; Worthmann, Hans. 2012. "Asymmetric Dimethyarginine as Marker and Mediator in Ischemic Stroke." Int. J. Mol. Sci. 13, no. 12: 15983-16004.

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