Evidence map›Paper›PMID 26376860›Full record

ArticleJournal of the American Society of Nephrology : JASN2016

Chronic Hyponatremia Causes Neurologic and Psychologic Impairments.

Haruki Fujisawa, Yoshihisa Sugimura, Hiroshi Takagi, Hiroyuki Mizoguchi, Hideyuki Takeuchi, Hisakazu Izumida, Kohtaro Nakashima, Hiroshi Ochiai, Seiji Takeuchi, Atsushi Kiyota and 8 more

Open access · greenAbstract read
In one paragraph

Article in Journal of the American Society of Nephrology : JASN, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 3 pooled it
6.2field-weighted citation impact, top 3% 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

66 citing papers in PubMed, 3 syntheses or guidelines pooled it, 112 citations in OpenAlex.

  1. Pooled it
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  15. Syndrome of Inappropriate Antidiuresis.Journal of the American Society of Nephrology : JASN · 2025
    Review
  16. The biology of water homeostasis.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2025
    Review
  17. Article
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6 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

18 authors at 2 institutions in 2 countries.

Haruki FujisawaDepartment of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya, Japan;
Yoshihisa SugimuraDepartment of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya, Japan; sugiyosi@med.nagoya-u.ac.jp.
Hiroshi TakagiDepartment of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya, Japan;
Hiroyuki MizoguchiFuturistic Environmental Simulation Center, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan;
Hideyuki TakeuchiDepartment of Neuroimmunology, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan;
Hisakazu IzumidaDepartment of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya, Japan;
Kohtaro NakashimaDepartment of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya, Japan;
Hiroshi OchiaiDepartment of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya, Japan;
Seiji TakeuchiDepartment of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya, Japan;
Atsushi KiyotaDepartment of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya, Japan;
Kazuya FukumotoFuturistic Environmental Simulation Center, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan;
Shintaro IwamaDepartment of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya, Japan; Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan;
Yoshiko TakagishiDepartment of Genetics, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan; and.
Yoshitaka HayashiDepartment of Genetics, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan; and.
Hiroshi ArimaDepartment of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya, Japan;
Yukio KomatsuDepartment of Neuroscience, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan.
Yoshiharu MurataDepartment of Genetics, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan; and.
Yutaka OisoDepartment of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya, Japan;
Nagoya University · JPNagoya Industrial Science Research Institute · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hyponatremia is the most common clinical electrolyte disorder. Once thought to be asymptomatic in response to adaptation by the brain, recent evidence suggests that chronic hyponatremia may be linked to attention deficits, gait disturbances, risk of falls, and cognitive impairments. Such neurologic defects are associated with a reduction in quality of life and may be a significant cause of mortality. However, because underlying diseases such as adrenal insufficiency, heart failure, liver cirrhosis, and cancer may also affect brain function, the contribution of hyponatremia alone to neurologic manifestations and the underlying mechanisms remain unclear. Using a syndrome of inappropriate secretion of antidiuretic hormone rat model, we show here that sustained reduction of serum sodium ion concentration induced gait disturbances; facilitated the extinction of a contextual fear memory; caused cognitive impairment in a novel object recognition test; and impaired long-term potentiation at hippocampal CA3-CA1 synapses. In vivo microdialysis revealed an elevated extracellular glutamate concentration in the hippocampus of chronically hyponatremic rats. A sustained low extracellular sodium ion concentration also decreased glutamate uptake by primary astrocyte cultures, suggesting an underlying mechanism of impaired long-term potentiation. Furthermore, gait and memory performances of corrected hyponatremic rats were equivalent to those of control rats. Thus, these results suggest chronic hyponatremia in humans may cause gait disturbance and cognitive impairment, but these abnormalities are reversible and careful correction of this condition may improve quality of life and reduce mortality.

Indexed as

AnimalsAstrocytesCA1 Region, HippocampalCA3 Region, HippocampalCells, CulturedChronic DiseaseCognition DisordersDisease Models, AnimalFearGait Disorders, NeurologicGlutamic AcidHyponatremiaInappropriate ADH SyndromeMaleMemory DisordersMicrodialysisGlutamic AcidSodiumdementiaelectrolyteshyponatremiaosmolalityvasopressinwater-electrolyte balance

Identifiers

PMID26376860
PMCPMC4769197
OpenAlexW2178570340

What OpenQuestion holds

Textmetadata
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.