Evidence map›Paper›PMID 40166442›Full record

ArticleDiabetology international2025

Association of metformin administration with the serum levels of zinc and homocysteine in patients with type 2 diabetes: a cross-sectional study.

Sadako Matsui, Chika Hiraishi, Ryo Sato, Takai Kojima, Keiichiro Matoba, Kei Fujimoto, Hiroshi Yoshida

Abstract read
In one paragraph

Article in Diabetology international, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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.

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

3 citing papers in PubMed.

  1. Trial
  2. Article
  3. Observational
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

7 authors.

Sadako MatsuiFood and Nutrition, Faculty of Human Sciences and design, Japan Women's University, 2-8-1, Mejirodai, Bunkyo, Tokyo 112-8681 Japan.ORCID 0000-0002-0117-266X
Chika HiraishiDepartment of General Medicine, The Jikei University Kashiwa Hospital, 163-1, Kashiwashita, Kashiwa, Chiba 277-8567 Japan.
Ryo SatoDepartment of Laboratory Medicine, The Jikei University Kashiwa Hospital, 163-1, Kashiwashita, Kashiwa, Chiba 277-8567 Japan.
Takai KojimaDepartment of Laboratory Medicine, The Jikei University Kashiwa Hospital, 163-1, Kashiwashita, Kashiwa, Chiba 277-8567 Japan.
Keiichiro MatobaDivision of Diabetes, Metabolism and Endocrinology, The Jikei University Kashiwa Hospital, 163-1, Kashiwashita, Kashiwa, Chiba 277-8567 Japan.
Kei FujimotoDivision of Diabetes, Metabolism and Endocrinology, The Jikei University Daisan Hospital, 4-11-1, Izumihoncho, Komae, Tokyo 201-8601 Japan.
Hiroshi YoshidaDepartment of Laboratory Medicine, The Jikei University Kashiwa Hospital, 163-1, Kashiwashita, Kashiwa, Chiba 277-8567 Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Metformin treatment has a risk factor of reduced serum concentrations of vitamin B12 and zinc, indicating its association with homocysteine metabolism. However, this association remains to be clarified in patients with type 2 diabetes (T2DM) accompanied by kidney dysfunction. Methods: This cross-sectional study was conducted in 149 patients with T2DM (96 men, 53 women), including diabetic kidney disease. Serum concentrations of homocysteine, as well as vitamin B12, folic acid, and zinc, were measured in outpatient T2DM patients. The study subjects were divided into two groups: patients with and without metformin administration (Met [ +], n = 62; Met [ -], n = 87). To explore the effect of kidney function, we also analyzed the data after dividing all the patients according to kidney function (chronic kidney disease [CKD] group, n = 66; non-CKD group, n = 83). Results: The Met ( +) group exhibited significantly higher serum zinc levels and lower serum homocysteine levels than the Met ( -) group. In the non-CKD group, metformin administration was positively associated with serum zinc levels, as demonstrated by multiple linear regression analysis adjusted for confounding factors ( Conclusions: The relationship between metformin treatment and serum zinc levels differed based on the presence or absence of CKD in patients with T2DM.

Indexed as

Diabetes kidney diseaseHomocysteineMetforminVitamin B12Zinc

Identifiers

PMID40166442
PMCPMC11954771

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.