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Serum HMGB1 predicts onset, severity of AE-IPF

20 Mar 2020
Smoking is one cause of idiopathic pulmonary fibrosis, apart from hereditary factors and inhalation of certain types of dust.

Increased levels of serum high-mobility group box 1 (HMGB1) is associated with earlier onset of acute exacerbation (AE) in stable idiopathic pulmonary fibrosis (IPF) patients and shorter survival in those with AE-IPF, a recent study has shown. This signifies that HMGB1 predicts the acute deterioration of IPF.

HMGB1 is a known mediator of acute lung injury owing to the acceleration of proinflammatory signaling, according to the investigators.

This study sought to determine the predictive value of circulatory HMGB1 for disease progression and prognosis of IPF in the stable phase and AE phase. Seventy-six patients with stable IPF, 17 with AE-IPF, 37 with chronic obstructive pulmonary disease (COPD) and 74 healthy controls were included in this analysis. Comparisons were made on serum HMGB1 levels among the four groups.

In stable IPF patients, the investigators examined the association of HMGB1 levels with the onset of AE and prognosis. Furthermore, the prognostic value of HMGB1 was determined in AE-IPF.

Patients with stable IPF had significantly higher serum HMGB1 levels than those in healthy controls (6.26±5.27 vs 3.42±2.69 ng/mL). However, those with AE-IPF (19.20±16.76 ng/mL) showed even higher levels than both stable IPF patients and controls.

No significant difference was observed in serum HMGB1 levels between stable IPF patients and those with COPD. In addition, higher HMGB1 levels predicted earlier onset of AE in stable IPF patients (p=0.030) as well as shorter survival in patients with AE-IPF (p=0.001).

“Previous studies showed that HMGB1 is increased in the lung and circulation of patients with AE‐IPF,” the investigators said.

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Most Read Articles
Roshini Claire Anthony, 29 May 2020

For coffee drinkers, drinking filtered coffee may be tied to a lower mortality risk, including cardiovascular disease (CVD)-related mortality, a study from Norway suggested.

3 days ago
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