ArticleMedical science monitor basic research2023
Urinary Klotho Excretion: A Key Regulator of Sodium Homeostasis in Chronic Kidney Disease Stage 2-4.
Article in Medical science monitor basic research, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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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.
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Who cites it
2 citing papers in PubMed, 1 citations in OpenAlex.
- Clinical Significance of Serum Soluble Klotho Levels in Sepsis-Associated Encephalopathy: A Single-Center Prospective, Preliminary Study.Journal of clinical medicine · 2026Article
- Article
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND Soluble alpha-klotho (klotho) is considered an important regulator of mineral homeostasis in patients with chronic kidney disease (CKD). Since the mineral transport proteins are located on the apical membrane of renal tubular cells, we hypothesized that urine klotho may also be involved in their homeostasis. We aimed to investigate the associations between serum and urine klotho and their impacts on mineral homeostasis in patients with stage 2 to 4 CKD. MATERIAL AND METHODS Serum, spot urine, and 24-h urine of klotho were measured by using enzyme-linked immunosorbent assay. Fractional excretion of sodium, potassium, calcium, phosphate, magnesium, and klotho were calculated. RESULTS A total of 53 patients with CKD stages 2 to 4 were enrolled in this cross-sectional study. The mean age was 71.1±10.5 years, and 68% were men. Linear regression analysis showed that serum log-transformed klotho was negatively associated with log-transformed fractional excretion of klotho (log-FEKlotho) (ß=-0.085, P=0.02), showing that urinary klotho excretion could negatively regulate serum klotho levels. Moreover, our multivariate stepwise regression showed log-fractional excretion of sodium was positively associated with log-FEKlotho (ß=0.138, P=0.032). This implied urinary klotho excretion positively regulated urinary sodium excretion. CONCLUSIONS Our study showed that urine klotho excretion resulted in decreased serum klotho levels and enhanced urinary sodium excretion in patients with CKD stages 2 to 4. In addition to serum klotho, we found, for the first time, that urine klotho also played a significant role in sodium homeostasis.
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