Evidence map›Paper›PMID 34533892›Full record

ArticleJournal of diabetes investigation2022

Synergistic association of the copper/zinc ratio under inflammatory conditions with diabetic kidney disease in patients with type 2 diabetes: The Asahi Diabetes Complications Study.

Toshiko Takao, Hiroyuki Yanagisawa, Machi Suka, Yoko Yoshida, Yukiko Onishi, Tazu Tahara, Takako Kikuchi, Akifumi Kushiyama, Motonobu Anai, Kazuyuki Takahashi and 6 more

Registry-linked trialAbstract read
In one paragraph

Article in Journal of diabetes investigation, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06690034 (Relationship of Serum Zinc Level With Severity of Diabetic Nephropathy), which is not on this map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
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.

NCT06690034 not yet recruitingnot on this mapstarted 2025, after this paper: background citation

Relationship of Serum Zinc Level With Severity of Diabetic Nephropathy

TypeobservationalSponsorAssiut UniversityRan2025 to 2027Enrolled92ConditionsDiabetic Nephropathy Type 2
3 · Its place in the literature

Who cites it

17 citing papers in PubMed.

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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

16 authors.

Toshiko TakaoDivision of Diabetes and Metabolism, The Institute of Medical Science, Asahi Life Foundation, Chuo-ku, Japan.ORCID https://orcid.org/0000-0003-1892-4896
Hiroyuki YanagisawaDepartment of Public Health and Environmental Medicine, The Jikei University School of Medicine, Minato-ku, Japan.ORCID https://orcid.org/0000-0002-5241-5238
Machi SukaDepartment of Public Health and Environmental Medicine, The Jikei University School of Medicine, Minato-ku, Japan.ORCID https://orcid.org/0000-0002-8392-1870
Yoko YoshidaDivision of Diabetes and Metabolism, The Institute of Medical Science, Asahi Life Foundation, Chuo-ku, Japan.ORCID https://orcid.org/0000-0003-3888-8132
Yukiko OnishiDivision of Diabetes and Metabolism, The Institute of Medical Science, Asahi Life Foundation, Chuo-ku, Japan.ORCID https://orcid.org/0000-0003-1180-5982
Tazu TaharaDivision of Diabetes and Metabolism, The Institute of Medical Science, Asahi Life Foundation, Chuo-ku, Japan.
Takako KikuchiDivision of Diabetes and Metabolism, The Institute of Medical Science, Asahi Life Foundation, Chuo-ku, Japan.ORCID https://orcid.org/0000-0002-5099-7203
Akifumi KushiyamaDivision of Diabetes and Metabolism, The Institute of Medical Science, Asahi Life Foundation, Chuo-ku, Japan.ORCID https://orcid.org/0000-0003-1385-7487
Motonobu AnaiLaboratories for Systems Biology and Medicine, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Japan.ORCID https://orcid.org/0000-0002-1219-0361
Kazuyuki TakahashiDepartment of Metabolism and Endocrinology, Akita University Graduate School of Medicine, Akita, Japan.
Sayaka Wakabayashi SugawaDivision of Diabetes and Metabolism, The Institute of Medical Science, Asahi Life Foundation, Chuo-ku, Japan.ORCID https://orcid.org/0000-0002-6412-4884
Hiroki YamazakiDepartment of Biochemistry, Keio University School of Medicine, Shinjuku-ku, Japan.ORCID https://orcid.org/0000-0001-7788-392X
Shoji KawazuDivision of Diabetes and Metabolism, The Institute of Medical Science, Asahi Life Foundation, Chuo-ku, Japan.
Yasuhiko IwamotoDepartment of Diabetes and Endocrinology, Shin-yurigaoka General Hospital, Kawasaki, Japan.
Mitsuhiko NodaDepartment of Endocrinology and Diabetes, Saitama Medical University, Moroyama, Japan.ORCID https://orcid.org/0000-0003-0413-4631
Masato KasugaDivision of Diabetes and Metabolism, The Institute of Medical Science, Asahi Life Foundation, Chuo-ku, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

AIMS/

introductionWe aimed to study the relationships among the copper (Cu)/zinc (Zn) ratio, inflammatory biomarkers, and the prevalence of diabetic kidney disease (DKD) in patients with type 2 diabetes. MATERIALS AND

methodsA cross-sectional study was performed on 651 patients with type 2 diabetes. DKD was defined as a urinary albumin-to-creatinine ratio of ≥30 mg/g creatinine and/or an estimated glomerular filtration rate using cystatin C of < 60 mL/min/1.73 m

resultsDKD was identified in 220 patients. AUC/optimal cutoff values were 0.777/1300 pg/mL for sTNFαR1, 0.603/1.1648 for the Cu/Zn ratio, and 0.582/305 ng/mL for hsCRP. The ORs for DKD were higher, but not significantly, in the sTNFαR1 < 1300 and Cu/Zn ≥ 1.1648 group, significantly higher in the sTNFαR1 ≥ 1300 and Cu/Zn < 1.1648 group (P < 0.0001), and further synergistically elevated in the sTNFαR1 ≥ 1300 and Cu/Zn ≥ 1.1648 group (P < 0.0001) compared with the sTNFαR1 < 1300 and Cu/Zn < 1.1648 group after multivariable adjustment. Levels of sTNFαR1 were significantly higher in the sTNFαR1 ≥ 1300 and Cu/Zn ≥ 1.1648 group than in the sTNFαR1 ≥ 1300 and Cu/Zn < 1.1648 group (P = 0.0006).

conclusionsUnder an inflammatory initiation signal of elevated serum sTNFαR1 levels, an increase in the Cu/Zn ratio may further exacerbate inflammation and is synergistically associated with a high prevalence of DKD in patients with type 2 diabetes.

Indexed as

Diabetes Mellitus, Type 2Diabetic NephropathiesCopperCross-Sectional StudiesHumansZincCopperZincCopper/zinc ratioDiabetic kidney diseaseSoluble tumor necrosis factor-α receptor 1

Identifiers

PMID34533892
PMCPMC8847118

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Registered trials

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.