Evidence map›Paper›PMID 32551440›Full record

ArticleCrohn's & colitis 3602020

The Copper/Zinc Ratio Correlates With Markers of Disease Activity in Patients With Inflammatory Bowel Disease.

Tobias Schneider, Daniel Caviezel, C Korcan Ayata, Caroline Kiss, Jan Hendrik Niess, Petr Hruz

Open access · goldAbstract read
In one paragraph

Article in Crohn's & colitis 360, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
2.2field-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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 38 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Review
  5. Review
  6. Review
  7. Article
  8. Selenium: A Key Element in Inflammatory Bowel Disease.Antioxidants (Basel, Switzerland) · 2025
    Review
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Positive zinc intake and a Japanese diet rich inJournal of clinical biochemistry and nutrition · 2023
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

6 authors at 2 institutions in 1 country.

Tobias SchneiderDepartment of Gastroenterology and Hepatology, Clarunis, Basel, Switzerland.
Daniel CaviezelDepartment of Gastroenterology and Hepatology, Clarunis, Basel, Switzerland.
C Korcan AyataDepartment of Biomedicine, University of Basel, Basel, Switzerland.
Caroline KissDivision of Clinical Nutrition, University Department of Geriatric Medicine Felix Platter, Basel, Switzerland.
Jan Hendrik NiessDepartment of Gastroenterology and Hepatology, Clarunis, Basel, Switzerland.
Petr HruzDepartment of Gastroenterology and Hepatology, Clarunis, Basel, Switzerland.ORCID 0000-0003-2767-0445
University of Basel · CHFelix Platter-Hospital · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundZinc (Zn) and copper (Cu) are trace elements that serve as cofactors in catalytic processes with impact on immune responses. In patients with inflammatory bowel disease (IBD), decreased levels of serum Zn and Cu have been observed. Here, we investigated the effect of inflammation on serum concentrations of these trace elements in patients with IBD.

methodsIn this cross-sectional study, 98 patients with Crohn disease (CD) and 56 with ulcerative colitis (UC) were prospectively enrolled. Disease activity parameters, such as C-reactive protein (CRP) and fecal calprotectin (FC) were compared to serum Zn, Cu, and Cu/Zn ratio.

resultsZinc insufficiency was observed in 11.2% of patients with CD and 14.3% with UC, Cu insufficiency in 20.4% with CD and 7.1% with UC. Anemia, hypoalbuminemia, increased FC, and elevated CRP were more frequently present in Zn-insufficient patients with IBD. In contrast, lower serum CRP values and a trend to lower FC were observed in Cu-insufficient patients. In multiple linear regression models adjusted for age, gender, and serum albumin, CRP positively correlated with serum Cu (

conclusionSystemic inflammation inversely affected the serum Zn and Cu concentrations and, consequently, resulted in an increased Cu/Zn ratio.

Indexed as

coppercopper/zinc ratioCrohn diseaseinflammatory bowel diseasetrace elementsulcerative colitiszinc

Identifiers

PMID32551440
PMCPMC7291944
OpenAlexW3002850963

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LicenceCC BY
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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.