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INHALED NITRIC OXIDE: CLINICAL EFFECTS AND INFLUENCE ON THE PROFILE OF INFLAMMATORY MARKERS IN PATIENTS WITH IDIOPATHIC PULMONARY HYPERTENSION

https://doi.org/10.20996/1819-6446-2012-8-4-500-508

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Abstract

Aim. To study the effect of treatment with inhaled nitric oxide (iNO) on the clinical status of patients with idiopathic pulmonary hypertension (IPH), and the profile of proinflammatory cytokines in peripheral blood. Material and methods. Patients with IPH (n=48) were included into the study. Evaluation of the IPH functional class (FC), the 6-minute walk test (6MWT) with the assessment of the Borg index, echocardiography , laboratory tests [blood count, evaluation of high-sensitivity C-reactive protein (hsCRP), interleukins (IL), interferon-γ (INFγ), tumor necrosis factor a (TNFa), macrophage inflammatory protein a (MIP1 a), soluble adhesion molecules (sICAM-1, sVCAM-1) in peripheral blood] were performed at baseline and on day 21 of iNO therapy course. The iNO course 40 ppm during 5 hours a day for 21 days was carried out additionally to the standard IPH therapy under the toxicity control by the PrinterNOx (England). Results. Increase in exercise tolerance, improvement of IPH FC (from 3.35±0.52 to 2.71±0.56; p=0.008), reduction in systolic pulmonary artery pressure (SPAP) by Doppler echocardiography (from 96.23±23.65 to 82.36±20.92 mmHg; p<0.05) were found in IPH patients as a result of iNo therapy. The significance of inflammation in IPH pathogenesis was confirmed due to assessment of the initial levels of proinflammatory cytokines. iNO therapy resulted in significant decrease in proinflammatory cytokines-IL-1β, IL-6, IL-8, TNFa levels. iNO induced significant dynamics of IL-1β and sVCAM in patients with IPH FC II. It reduced IL-8 and TNFa and increase INFγ (p<0.05) in patients with IPH FC III-IV. Changes in IL-1β and sVCAM levels (ΔIL-1β and ΔsVCAM) by the 21 day of iNO therapy in comparison with these at baseline correlated with ΔSPAP , and ΔIL-6 correlated with ΔFC and Δ6MWT distance (30.5 [21.0; 53.0] m; p<0.001). This allows considering these indicators as markers of iNO treatment efficacy. Conclusions. 21-day iNO therapy in IPH patients resulted in significant improvement of functional status, reduce SPAP and caused the positive dynamics of proinflammatory cytokines blood levels.

About the Authors

T. V. Martynyuk
Institute of Clinical Cardiology named after A.L. Myasnikov , Russian Cardiology Research and Production Complex
Russian Federation


S. N. Nakonechnikov
Institute of Clinical Cardiology named after A.L. Myasnikov , Russian Cardiology Research and Production Complex
Russian Federation


V. P. Masenko
Institute of Clinical Cardiology named after A.L. Myasnikov , Russian Cardiology Research and Production Complex
Russian Federation


I. E. Chazova
Institute of Clinical Cardiology named after A.L. Myasnikov , Russian Cardiology Research and Production Complex
Russian Federation


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For citation:


Martynyuk T.V., Nakonechnikov S.N., Masenko V.P., Chazova I.E. INHALED NITRIC OXIDE: CLINICAL EFFECTS AND INFLUENCE ON THE PROFILE OF INFLAMMATORY MARKERS IN PATIENTS WITH IDIOPATHIC PULMONARY HYPERTENSION. Rational Pharmacotherapy in Cardiology. 2012;8(4):500-508. (In Russ.) https://doi.org/10.20996/1819-6446-2012-8-4-500-508

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ISSN 1819-6446 (Print)
ISSN 2225-3653 (Online)