Evidence map›Paper›PMID 33967623›Full record

Observational studyInternational journal of medical sciences2021

Correlations among Pulmonary DJ-1, VDR and Nrf-2 in patients with Chronic Obstructive Pulmonary Disease: A Case-control Study.

Ying Xiang, Lin Fu, Hui-Xian Xiang, Ling Zheng, Zhu-Xia Tan, Li-Xiang Wang, Wei Cao, De-Xiang Xu, Hui Zhao

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in International journal of medical sciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.9field-weighted citation impact, top 13% 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

15 citing papers in PubMed, 17 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. The potential role of 1,25(OH)Journal of inflammation (London, England) · 2025
    Review
  6. Review
  7. Review
  8. Review
  9. Article
  10. Low 15d-PGJ2 status is associated with oxidative stress in chronic obstructive pulmonary disease patients.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2023
    Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
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

9 authors at 1 institution in 1 country.

Ying XiangRespiratory and critical care medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China.
Lin FuRespiratory and critical care medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China.
Hui-Xian XiangRespiratory and critical care medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China.
Ling ZhengRespiratory and critical care medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China.
Zhu-Xia TanRespiratory and critical care medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China.
Li-Xiang WangRespiratory and critical care medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China.
Wei CaoRespiratory and critical care medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China.
De-Xiang XuDepartment of Toxicology, Anhui Medical University, Hefei, 230032, China.
Hui ZhaoRespiratory and critical care medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China.
Anhui Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Parkinson protein 7 (PARK7)/DJ-1 (DJ-1) is a redox sensitive molecular and stabilizer of nuclear factor erythroid 2-related factor 2 (Nrf-2). Nrf-2 regulates the downstream antioxidant defense system and exerts a significant function in patients with chronic obstructive pulmonary disease (COPD). Vitamin D receptor (VDR) is the nuclear receptor that regulates the downstream target genes. This study aimed to analyze the associations among pulmonary function, DJ-1, VDR and Nrf-2 in COPD patients. Serum was collected from 180 COPD patients and control subjects. Thirty-five lung tissues were obtained. DJ-1 was measured using ELISA and western blotting. Nrf-2 and VDR were detected by immunohistochemistry. Serum and pulmonary DJ-1 levels were lower in COPD patients than those in control subjects. Pulmonary VDR-positive nuclei were reduced in COPD patients. Nrf-2-positive nuclei were reduced in lung tissues of COPD patients. On the contrary, Nrf-2-related downstream target proteins were elevated in COPD patients. Further correlation analysis indicated that forced expiratory volume in 1 second (FEV1) was positively associated with pulmonary DJ-1, VDR and Nrf-2 in patients with COPD. In addition, there were positive correlations among DJ-1, VDR and Nrf-2 in lung tissues of COPD patients. In conclusion, DJ-1, VDR and Nrf-2 were decreased in COPD patients compared with control subjects. The reduction of DJ-1 and VDR associating with Nrf-2 downregulation may be involved in the process of COPD.

Indexed as

AgedAged, 80 and overCase-Control StudiesDown-RegulationFemaleHumansLungMaleMiddle AgedNF-E2-Related Factor 2Prospective StudiesProtein Deglycase DJ-1Pulmonary Disease, Chronic ObstructiveReceptors, CalcitriolRespiratory Function TestsSeverity of Illness IndexNFE2L2 protein, humanNF-E2-Related Factor 2PARK7 protein, humanProtein Deglycase DJ-1Receptors, CalcitriolVDR protein, humanCOPDDJ-1lungNrf-2pulmonary functionVDR

Identifiers

PMID33967623
PMCPMC8100631
OpenAlexW3158858787

What OpenQuestion holds

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LicenceCC BY
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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.