Etracker Debug:
	et_pagename = "Clinical Chemistry and Laboratory Medicine (CCLM)|cclm|C|[EN]"
	
        
Jump to ContentJump to Main Navigation

Clinical Chemistry and Laboratory Medicine (CCLM)

Published in Association with the European Federation of Clinical Chemistry and Laboratory Medicine (EFLM)

Editor-in-Chief: Plebani, Mario

Editorial Board Member: Gillery, Philippe / Kazmierczak, Steven / Lackner, Karl J. / Lippi, Giuseppe / Melichar, Bohuslav / Schlattmann, Peter / Whitfield, John B.

13 Issues per year

IMPACT FACTOR 2013: 2.955
Rank 5 out of 29 in category Medical Laboratory Technology in the 2013 Thomson Reuters Journal Citation Report/Science Edition

VolumeIssuePage

Issues

Determination of asymmetric dimethylarginine (ADMA) using a novel ELISA assay

Friedrich Schulze1 / Reinhard Wesemann2 / Edzard Schwedhelm3 / Karsten Sydow4 / Jennifer Albsmeier5 / John P. Cooke6 / Rainer H. Böger7

1.

2.

3.

4.

5.

6.

7.

Corresponding author: Prof. Dr. med. Rainer H. Böger, Arbeitsgruppe Klinische Pharmakologie, Institut für Experimentelle und Klinische Pharmakologie, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany Phone: +40-42803-9759, Fax: +40-42803-9757,

Citation Information: Clinical Chemical Laboratory Medicine. Volume 42, Issue 12, Pages 1377–1383, ISSN (Online) 1437-4331, ISSN (Print) 1434-6621, DOI: 10.1515/CCLM.2004.257, June 2005

Publication History

Received:
August 3, 2004
Accepted:
September 10, 2004
Published Online:
2005-06-01

Abstract

Asymmetric dimethylarginine (ADMA) is an endogenous competitive inhibitor of nitric oxide synthase (NOS). Elevated ADMA plasma levels have been reported in connection with diseases associated with an impaired endothelial L-arginine-NO pathway and endothelial dysfunction, such as atherosclerosis, hypercholesterolemia, chronic heart failure, diabetes mellitus, and hypertension. NO production by NOS is decreased due to elevated ADMA levels. In fact, there is increasing interest in determination of ADMA levels in samples of various origins. The aim of this work was to develop a precise and easy immunoassay in contrast to the existing methods, such as HPLC, liquid chromatography-mass spectrometry (LC-MS) and gas chromatography (GC)-MS. We determined cross-reactivity in our immunoassay of 1.2% for symmetric dimethylarginine and <0.02% for L-arginine. The limit of quantitation was 0.05 μmol/l. We found good correlation of the values measured when we compared our assay with LC-tandem MS (n=29; r=0.984; p<0.0001). We determined ADMA levels in human serum and plasma, mouse and rat plasma, and cell culture supernatant. For human plasma we found a mean of 0.65 μmol/l in healthy subjects. In the plasma of mice and rats we found mean concentrations of 1.05 and 1.09 μmol/l, respectively.

Keywords: dimethylarginine; endothelial dysfunction; inhibitor; NO pathway; risk factor

Comments (0)

Please log in or register to comment.
Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.