Evidence map›Paper›PMID 33361208›Full record

ArticleJournal of immunology (Baltimore, Md. : 1950)2021

Low Vitamin D Status Is Associated with Inflammation in Patients with Chronic Obstructive Pulmonary Disease.

Lin Fu, Jun Fei, Zhu-Xia Tan, Yuan-Hua Chen, Biao Hu, Hui-Xiang Xiang, Hui Zhao, De-Xiang Xu

Open access · bronzeAbstract read
In one paragraph

Article in Journal of immunology (Baltimore, Md. : 1950), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 1 pooled it
5.3field-weighted citation impact, top 3% 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

44 citing papers in PubMed, 1 synthesis or guideline pooled it, 70 citations in OpenAlex.

  1. Pooled it
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  13. The Role and Clinical Significance of Vitamin D in Chronic Obstructive Pulmonary Disease.International journal of chronic obstructive pulmonary disease · 2025
    Review
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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

8 authors at 1 institution in 1 country.

Lin FuThe Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China.
Jun FeiThe Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China.
Zhu-Xia TanThe Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China.
Yuan-Hua ChenDepartment of Toxicology, Anhui Medical University, Hefei 230032, China; and.ORCID 0000-0001-7344-4436
Biao HuThe Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China.
Hui-Xiang XiangThe Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China.
Hui ZhaoThe Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China; zhaohuichenxi@126.com xudex@126.com.
De-Xiang XuDepartment of Toxicology, Anhui Medical University, Hefei 230032, China; and zhaohuichenxi@126.com xudex@126.com.
Anhui Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Vitamin D deficiency is associated with increased risks of chronic obstructive pulmonary disease (COPD). Nevertheless, the mechanisms remain unknown. This study analyzed the correlations between vitamin D levels and inflammation in COPD patients. One hundred and one patients with COPD and 202 control subjects were enrolled. Serum 25(OH)D level and inflammatory cytokines were detected. Serum 25(OH)D was decreased and inflammatory cytokines were increased in COPD patients. According to forced expiratory volume in 1 s, COPD patients were divided into three grades. Furthermore, serum 25(OH)D was gradually decreased in COPD patients ranging from grade 1-2 to 4. Serum 25(OH)D was inversely associated with inflammatory cytokines in COPD patients. Further analysis found that NF-κB and AP-1 signaling were activated in COPD patients. Besides, inflammatory signaling was gradually increased in parallel with the severity of COPD. By contrast, pulmonary nuclear vitamin D receptor was decreased in COPD patients. In vitro experiments showed that 1,25(OH)

Indexed as

A549 CellsAgedCase-Control StudiesFemaleHumansInflammationMaleMiddle AgedNF-kappa BPulmonary Disease, Chronic ObstructiveReceptors, CalcitriolSignal TransductionTranscription Factor AP-1Vitamin DVitamin D DeficiencyNF-kappa BReceptors, CalcitriolTranscription Factor AP-1Vitamin D

Identifiers

PMID33361208
PMCPMC7812059
OpenAlexW3114814740

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.