Abstract:
:An increase of pulmonary artery pressure in patients with pulmonary hypertension (PH) results in right ventricular failure and ultimately death. High-mobility group box 1 (HMGB1), a nuclear protein, acts as a pro-inflammatory cytokine by activating receptor for advanced glycation end-products (RAGE) in the extracellular environment. The purpose of this study was to examine the clinical significance of circulating levels of HMGB1 and RAGE in patients with PH. Plasma levels of HMGB1 and soluble RAGE were measured in 27 patients with PH (14 with pulmonary arterial hypertension [PAH], 13 with chronic thromboembolic pulmonary hypertension [CTEPH]) and 30 normal subjects as control. There was no difference in the plasma levels of HMGB1 between the PH patients and the control subjects. However, plasma levels of soluble RAGE were significantly higher in the patients with PH than in the controls (P < 0.001). Plasma soluble RAGE levels were higher in PAH (P < 0.001) and CTEPH (P < 0.0001) than in the controls. In addition, there was a statistically significant positive correlation between pulmonary artery pressure and plasma levels of soluble RAGE (r = 0.403, P < 0.0001). In the CTEPH patients, soluble RAGE levels were reduced after balloon pulmonary angioplasty (P < 0.001). Plasma levels of soluble RAGE, but not HMGB1, might be a novel marker that reflects the pathological condition in patients with PH.
journal_name
Int Heart Jjournal_title
International heart journalauthors
Suzuki S,Nakazato K,Sugimoto K,Yoshihisa A,Yamaki T,Kunii H,Suzuki H,Saitoh S,Takeishi Ydoi
10.1536/ihj.15-188subject
Has Abstractpub_date
2016-01-01 00:00:00pages
234-40issue
2eissn
1349-2365issn
1349-3299journal_volume
57pub_type
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