Evidence map›Paper›PMID 24256690›Full record

ArticleRespiratory research2013

Serum heat shock protein 47 levels in patients with drug-induced lung disease.

Tomoyuki Kakugawa, Shin-ichi Yokota, Yuji Ishimatsu, Tomayoshi Hayashi, Shota Nakashima, Shintaro Hara, Noriho Sakamoto, Yasuhiro Matsuoka, Hiroshi Kubota, Mariko Mine and 3 more

Open access · goldAbstract readComparative Study
In one paragraph

Article in Respiratory research, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 24% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 6 institutions in 1 country.

Tomoyuki KakugawaSecond Department of Internal Medicine, Nagasaki University School of Medicine, Nagasaki, Japan. kakugawa@nagasaki-u.ac.jp.
Shin-ichi Yokota
Yuji Ishimatsu
Tomayoshi Hayashi
Shota Nakashima
Shintaro Hara
Noriho Sakamoto
Yasuhiro Matsuoka
Hiroshi Kubota
Mariko Mine
Hiroshi Mukae
Kazuhiro Nagata
Shigeru Kohno
Nagasaki University · JPKyoto University · JPKyoto Sangyo University · JPNagasaki University Hospital · JPSapporo Medical University · JPUniversity of Occupational and Environmental Health Japan · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHeat shock protein (HSP) 47 is a collagen-specific molecular chaperone that is required for molecular maturation of various types of collagens. We recently reported that HSP47 serum levels were markedly higher in patients with acute exacerbations of idiopathic pulmonary fibrosis (IPF) when compared with patients with stable IPF, suggesting that serum HSP47 levels correlate with interstitial pneumonia activity. The aim of this study was to evaluate serum HSP47 levels in patients with drug-induced lung disease (DILD).

methodsFindings from high-resolution computed tomographic chest scans of 47 patients with DILD were classified into one of four predominant patterns: organizing pneumonia (OP) (n = 4), nonspecific interstitial pneumonia (NSIP) (n = 24), hypersensitivity pneumonitis (HP) (n = 11), and diffuse alveolar damage (DAD) (n = 8). Serum levels of HSP47, Krebs von den Lungen-6 (KL-6), surfactant protein (SP)-A, and SP-D were measured in these patients.

resultsThe PaO2/fraction of inspired oxygen (FiO2) (P/F) ratios were significantly lower and the alveolar-arterial difference of oxygen (A-a DO2) was significantly higher in the DAD group than in the other groups. Patients with DAD had the worst outcomes among the different subgroups. Patients in the DAD group had significantly higher serum HSP47 levels than those in other groups. Receiver operating characteristic curves revealed that HSP47 was superior to KL-6, SP-A, and SP-D for discriminating between the DAD group and the other groups. The cut-off level for HSP47 that resulted in the highest diagnostic accuracy was 1711.5 pg/mL. The sensitivity, specificity, and diagnostic accuracy were 87.5%, 97.4%, and 95.7%, respectively. Serum levels of HSP47 in the group of patients requiring glucocorticoids were significantly higher than those in patients who experienced clinical improvement without glucocorticoid administration. Serum HSP47 levels also significantly correlated with various respiratory parameters.

conclusionThis study demonstrated that serum HSP47 levels were elevated in patients with DILD with a DAD pattern who had the worst outcomes among the different subgroups, and that this was correlated with P/F ratio and A-a DO2.

Indexed as

AdultAgedAged, 80 and overAlveolitis, Extrinsic AllergicBiomarkersCryptogenic Organizing PneumoniaDiagnosis, DifferentialFemaleHSP47 Heat-Shock ProteinsHumansLung DiseasesLung Diseases, InterstitialMaleMiddle AgedMucin-1PrognosisBiomarkersHSP47 Heat-Shock ProteinsMUC1 protein, humanMucin-1Pulmonary Surfactant-Associated Protein APulmonary Surfactant-Associated Protein D

Identifiers

PMID24256690
PMCPMC4176100
OpenAlexW2109899156

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.