Volume 2018, Issue 1 7260178
Research Article
Open Access

Clinical Significance of Serum Hemeoxygenase-1 as a New Biomarker for the Patients with Interstitial Pneumonia

Kota Murohashi

Kota Murohashi

Department of Pulmonology, Yokohama City University Graduate School of Medicine, Yokohama, Japan yokohama-cu.ac.jp

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Yu Hara

Corresponding Author

Yu Hara

Department of Pulmonology, Yokohama City University Graduate School of Medicine, Yokohama, Japan yokohama-cu.ac.jp

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Kanako Shinada

Kanako Shinada

Department of Pulmonology, Yokohama City University Graduate School of Medicine, Yokohama, Japan yokohama-cu.ac.jp

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Kenjiro Nagai

Kenjiro Nagai

Department of Pulmonology, Yokohama City University Graduate School of Medicine, Yokohama, Japan yokohama-cu.ac.jp

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Masaharu Shinkai

Masaharu Shinkai

Department of Pulmonology, Yokohama City University Graduate School of Medicine, Yokohama, Japan yokohama-cu.ac.jp

Department of Pulmonology, Tokyo-Shinagawa Hospital, Shinagawa, Japan

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Akihiko Kawana

Akihiko Kawana

Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, National Defense Medical College, Saitama, Japan ndmc.ac.jp

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Takeshi Kaneko

Takeshi Kaneko

Department of Pulmonology, Yokohama City University Graduate School of Medicine, Yokohama, Japan yokohama-cu.ac.jp

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First published: 22 November 2018
Citations: 9
Academic Editor: Franz Stanzel

Abstract

Background. Serum hemeoxygenase-1 (HO-1) has been proposed to be a biomarker of lung disease activity and prognosis. The present study aimed at evaluating whether HO-1 could be a useful marker for evaluating disease activity and predicting prognosis in patients with interstitial pneumonia (IP). Materials and Methods. Serum HO-1 levels of newly diagnosed or untreated patients with IP were measured at hospitalization. We evaluated the relationships between serum HO-1 and other serum biomarkers, high resolution CT (HRCT) findings, and hospital mortality. Results. Twenty-eight patients with IP, including 14 having an acute exacerbation (AE) and 14 not having an AE, were evaluated. The patients having an AE had significantly higher HO-1 levels than those not having an AE (53.5 ng/mL vs. 24.1 ng/mL; p < 0.001), and the best cut-off level to discriminate between having an AE or not having an AE was 41.6 ng/mL. Serum HO-1 levels were positively correlated with serum levels of surfactant protein-D (r = 0.66, p < 0.001) and the ground glass opacity score (calculated from HRCT; r = 0.40, p = 0.036). Patients who subsequently died in hospital had presented with significantly higher HO-1 levels than those who did not die in hospital (64.8 ng/mL vs. 32.0 ng/mL; p = 0.009). Conclusion. Serum HO-1 may serve as a useful biomarker for detecting AE or predicting hospital mortality in patients with IP.

Data Availability

The table and figure data used to support the findings of this study are included within the article.

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