Evidence map›Paper›PMID 41961222›Full record

ArticleClinical and experimental nephrology2026

Association between serum zinc and cognitive function in patients undergoing maintenance hemodialysis: the Osaka Dialysis Complication Study (ODCS).

Shinya Nakatani, Fumiyuki Morioka, Tetsuo Shoji, Kazuma Sone, Hideki Uedono, Akihiro Tsuda, Hisako Fujii, Yasuo Imanishi, Masanori Emoto, Tomoaki Morioka

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Article in Clinical and experimental nephrology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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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

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

10 authors.

Shinya NakataniDepartment of Nephrology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3, Asahi-Machi, Abeno-Ku, Osaka, 545-8585, Japan. nakatani-s@omu.ac.jp.ORCID http://orcid.org/0000-0001-5302-3634
Fumiyuki MoriokaDepartment of Metabolism, Endocrinology and Molecular Medicine, Osaka Metropolitan University Graduate School of Medicine, Osaka, 545-8585, Japan.
Tetsuo ShojiDepartment of Metabolism, Endocrinology and Molecular Medicine, Osaka Metropolitan University Graduate School of Medicine, Osaka, 545-8585, Japan.
Kazuma SoneDepartment of Metabolism, Endocrinology and Molecular Medicine, Osaka Metropolitan University Graduate School of Medicine, Osaka, 545-8585, Japan.
Hideki UedonoDepartment of Metabolism, Endocrinology and Molecular Medicine, Osaka Metropolitan University Graduate School of Medicine, Osaka, 545-8585, Japan.
Akihiro TsudaDepartment of Metabolism, Endocrinology and Molecular Medicine, Osaka Metropolitan University Graduate School of Medicine, Osaka, 545-8585, Japan.
Hisako FujiiDepartment of Health and Medical Innovation, Osaka Metropolitan University Graduate School of Medicine, Osaka, 545-8585, Japan.
Yasuo ImanishiVascular Science Center for Translational Research, Osaka Metropolitan University Graduate School of Medicine, Osaka, 545-8585, Japan.
Masanori EmotoDepartment of Nephrology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3, Asahi-Machi, Abeno-Ku, Osaka, 545-8585, Japan.
Tomoaki MoriokaDepartment of Metabolism, Endocrinology and Molecular Medicine, Osaka Metropolitan University Graduate School of Medicine, Osaka, 545-8585, Japan.

Funding

Chugai Pharmaceuticals Co. Ltd Chugai Pharmaceuticals Co. LtdDaiichi Sankyo Company A16-0602The Japan Kidney Foundation JKFB 15-43
6 · The paper itself

Abstract

backgroundZinc deficiency is highly prevalent in patients undergoing hemodialysis, and may contribute to cognitive impairment, given its essential role in neurotransmission and neurogenesis. This study aimed to examine the association between serum zinc and cognitive function in this population.

methodsThis was a cross-sectional study (N = 1207). Cognitive function was assessed by using the Modified Mini-Mental State examination (3MS). The association between serum zinc and 3MS score and its domains were examined by using a linear regression model and ordinal logistic regression model, respectively.

resultsIn total patients, 3MS score and serum zins levels were 91 (82-97) points and 68 (61-76) μg/dL, respectively. Serum zinc level was not associated with 3MS score in adjusted model with 16 potential confounders. However, there was a significant interaction between serum zinc and albumin levels (p = 0.019). Therefore, participants were categorized into 2 subgroups by the median serum albumin level (3.7 g/dL) in further analyses. In the lower serum albumin group, the positive association between serum zinc and 3MS was significant after adjustment for 15 potential confounders (p = 0.022). After additional adjustment for both magnesium and phosphate, the association showed a similar positive trend but did not reach statistical significance (p = 0.072). Among the cognitive domains of the 3MS, attention was significantly associated with serum zinc level in participants with lower serum albumin (p = 0.016).

conclusionsLower serum zinc was a novel factor associated with cognitive function, particularly in attention in patients undergoing maintenance hemodialysis with low serum albumin.

Indexed as

CognitionCognition DisordersCognitive DysfunctionRenal DialysisZincAgedBiomarkersCross-Sectional StudiesFemaleHumansJapanLinear ModelsLogistic ModelsMaleMental Status and Dementia TestsMiddle AgedBiomarkersZincCognitive functionHemodialysisZinc

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