Evidence map›Paper›PMID 33621199›Full record

ArticleAging2021

Indoxyl sulfate caused behavioral abnormality and neurodegeneration in mice with unilateral nephrectomy.

Chiao-Yin Sun, Jian-Ri Li, Ya-Yu Wang, Shih-Yi Lin, Yen-Chuan Ou, Cheng-Jui Lin, Jiaan-Der Wang, Su-Lan Liao, Chun-Jung Chen

Open access · greenAbstract read
In one paragraph

Article in Aging, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 1 pooled it
2.9field-weighted citation impact, top 7% 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

47 citing papers in PubMed, 1 synthesis or guideline pooled it, 62 citations in OpenAlex.

  1. Indoxyl Sulfate and Autism Spectrum Disorder: A Literature Review.International journal of molecular sciences · 2024
    Pooled it
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  16. Uremic Toxins, CKD, and Cognitive Dysfunction.Journal of the American Society of Nephrology : JASN · 2025
    Review
  17. Article
  18. Article
  19. Review
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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

9 authors at 5 institutions in 1 country.

Chiao-Yin SunDepartment of Nephrology, Chang Gung Memorial Hospital, Keelung 204, Taiwan.
Jian-Ri LiDivision of Urology, Taichung Veterans General Hospital, Taichung 407, Taiwan.
Ya-Yu WangDepartment of Family Medicine, Taichung Veterans General Hospital, Taichung 407, Taiwan.
Shih-Yi LinInstitute of Clinical Medicine, National Yang Ming University, Taipei 112, Taiwan.
Yen-Chuan OuDepartment of Urology, Tungs' Taichung MetroHarbor Hospital, Taichung 435, Taiwan.
Cheng-Jui LinDivision of Nephrology, Department of Internal Medicine, Mackay Memorial Hospital, Taipei 104, Taiwan.
Jiaan-Der WangChildren's Medical Center, Taichung Veterans General Hospital, Taichung 407, Taiwan.
Su-Lan LiaoDepartment of Medical Research, Taichung Veterans General Hospital, Taichung 407, Taiwan.
Chun-Jung ChenDepartment of Medical Research, Taichung Veterans General Hospital, Taichung 407, Taiwan.
Taichung Veterans General Hospital · TWNational Yang Ming University Hospital · TWChang Gung Memorial Hospital · TWMackay Junior College of Medicine, Nursing and Management · TWTungs' Taichung MetroHarbor Hospital · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chronic Kidney Disease (CKD) and neurodegenerative diseases are aging-related diseases. CKD with declined renal function is associated with an elevation of circulating indoxyl sulfate, a metabolite synthesized by gut microbes. We explored the roles of gut microbial metabolites in linking with Central Nervous System (CNS) diseases by administrating indoxyl sulfate intraperitoneally to male C57BL/6 mice with unilateral nephrectomy. Upon exposure, the accumulation of indoxyl sulfate was noted in the blood, prefrontal cortical tissues, and cerebrospinal fluid. Mice showed behavioral signs of mood disorders and neurodegeneration such as anxiety, depression, and cognitive impairment. Those behavioral changes were accompanied by disturbed neuronal survival, neural stem cell activity, expression of Brain-Derived Neurotrophic Factor, serotonin, corticosterone, and Repressor Element-1 Silencing Transcription Factor, and post-receptor intracellular signaling, as well as upregulated oxidative stress and neuroinflammation. Uremic toxin adsorbent AST-120 improved the above mentioned changes. Intriguingly, intracerebroventricular indoxyl sulfate administration only caused limited alterations in the normal mice and the alterations were reversed by aryl hydrocarbon receptor antagonism. The findings suggest pathogenic roles of indoxyl sulfate in the development of CNS diseases, and highlight gut microbiota as alternative targets for intervention with the aim of slowing down the progression of CKD and decreasing CNS complications.

Indexed as

NephrectomyAffectAnimalsAnxietyBehavior, AnimalBrain-Derived Neurotrophic FactorCarbonCell SurvivalCognitive DysfunctionCorticosteroneDepressionIndicanInjections, IntraperitonealInterleukin-1betaMaleMiceAST 120Brain-Derived Neurotrophic FactorCarbonCorticosteroneIndicanInterleukin-1betaOxidesRE1-Silencing Transcription FactorRepressor ProteinsRNA, MessengerSerotonindepressiongut microbiotaneurodegenerationneuroinflammationuremic toxin

Identifiers

PMID33621199
PMCPMC7993681
OpenAlexW3131342463

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.