Evidence That Links Loss of Cyclooxygenase-2 With Increased Asymmetric Dimethylarginine Novel Explanation of Cardiovascular Side Effects Associated With Anti-Inflammatory Drugs

Article

关键词: NITRIC-OXIDE;    GASTROINTESTINAL TOXICITY;    COX-2 INHIBITORS;    BLOOD-PRESSURE;    HEART-DISEASE;    PLASMA-LEVELS;    L-ARGININE;    PROSTACYCLIN;    CYCLO-OXYGENASE-2;    PROSTAGLANDINS;   

DOI  :  10.1161/CIRCULATIONAHA.114.011591

来源: SCIE

【 摘 要 】

Background-Cardiovascular side effects associated with cyclooxygenase-2 inhibitor drugs dominate clinical concern. Cyclooxygenase-2 is expressed in the renal medulla where inhibition causes fluid retention and increased blood pressure. However, the mechanisms linking cyclooxygenase-2 inhibition and cardiovascular events are unknown and no biomarkers have been identified. Methods and Results-Transcriptome analysis of wild-type and cyclooxygenase-2(-/-)mouse tissues revealed 1 gene altered in the heart and aorta, but > 1000 genes altered in the renal medulla, including those regulating the endogenous nitric oxide synthase inhibitors asymmetrical dimethylarginine (ADMA) and monomethyl-l-arginine. Cyclo-oxygenase-2(-/-)mice had increased plasma levels of ADMA and monomethyl-l-arginine and reduced endothelial nitric oxide responses. These genes and methylarginines were not similarly altered in mice lacking prostacyclin receptors. Wild-type mice or human volunteers taking cyclooxygenase-2 inhibitors also showed increased plasma ADMA. Endothelial nitric oxide is cardio-protective, reducing thrombosis and atherosclerosis. Consequently, increased ADMA is associated with cardiovascular disease. Thus, our study identifies ADMA as a biomarker and mechanistic bridge between renal cyclooxygenase-2 inhibition and systemic vascular dysfunction with nonsteroidal anti-inflammatory drug usage. Conclusions-We identify the endogenous endothelial nitric oxide synthase inhibitor ADMA as a biomarker and mechanistic bridge between renal cyclooxygenase-2 inhibition and systemic vascular dysfunction.

【 授权许可】

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