Oral Hydrogen-Rich Water Alleviates Oxalate-Induced Kidney Injury by Suppressing Oxidative Stress, Inflammation, and Fibrosis
Si Y, Liu L, Cheng J, Zhao T, Zhou Q, Yu J, Chen W, Ding J, Sun X, Lu H, Guo Z. · Frontiers in medicine. 2021;8:713536.
Study at a glance
Preclinical
mice, cells, cell, rabbit used to study kidney and urinary health.
Full text reports H₂ dissolved in drinking water plus an oral H₂-generating preparation. Detected intervention quantities or schedules: 2.5 ppm, 5%, 30%. · H₂-related quantities reported in the intervention passages: 2.5 ppm, 5%, 30%. Values are not combined across different experimental arms.
Multiple article-specific time points; see the linked full methods.
Article-reported result excerpt (24 words maximum): “By performing pizzolato staining and polarization microscopy of kidney sections, there found extensive CaOx crystal deposition in kidneys of mice fed a diet high…” This excerpt is not a complete result summary; consult the linked full text for all positive and null findings.
Preclinical evidence only; findings do not establish a treatment effect in people. Funding or grant information is reported in the full article. The article declares no conflicts of interest.
What kind of evidence is this?
Preclinical
Controlled animal and cell study
Kidney and urinary health
H₂-rich water
Information not yet classified
Some editorial classification fields are still pending. The source-reported outcomes and result are shown below; Hydrogenology does not infer a positive or negative signal from prose automatically.
Methods
mice, cells, cell, rabbit used to study kidney and urinary health.
Preclinical study; group or assay counts reported in the full text include n=24, n=8.
Multiple article-specific time points; see the linked full methods.
Full text reports H₂ dissolved in drinking water plus an oral H₂-generating preparation. Detected intervention quantities or schedules: 2.5 ppm, 5%, 30%.
H₂ dissolved in drinking water plus an oral H₂-generating preparation — H₂ only unless the full text explicitly reports oxygen co-delivery.
H₂-related quantities reported in the intervention passages: 2.5 ppm, 5%, 30%. Values are not combined across different experimental arms.
Control or comparison condition reported in the full article; see the linked methods for arm-specific details.
Outcomes and reported result
clinical symptoms or functional scores, tumor growth or cancer markers, inflammation and cytokines, oxidative-stress and antioxidant markers, apoptosis or cell injury, histology or tissue damage
Article-reported result excerpt (24 words maximum): “By performing pizzolato staining and polarization microscopy of kidney sections, there found extensive CaOx crystal deposition in kidneys of mice fed a diet high…” This excerpt is not a complete result summary; consult the linked full text for all positive and null findings.
The complete machine-readable article was checked for source identity, methods, intervention quantities, results, tables, funding and conflict declarations. This public record is based on the full article.
A reported association, difference or mechanism is not automatically a clinical benefit.
Limitations and applicability
Preclinical evidence only; findings do not establish a treatment effect in people. Funding or grant information is reported in the full article. The article declares no conflicts of interest.
Applies to the reported animal, cell or tissue model, not directly to patients.
No single-study GRADE certainty rating is assigned. Read how records and evidence assessments are prepared.
Sources and record status
PMID: 34490303 · DOI: 10.3389/fmed.2021.713536
A free full article is available through PubMed Central.
Official PubMed/PMC full article; source identity, intervention data and declarations re-audited 25 August 2026.
25 August 2026
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