Evidence map›Paper›PMID 29720668›Full record

ArticleScientific reports2018

Central role of the proximal tubular αKlotho/FGF receptor complex in FGF23-regulated phosphate and vitamin D metabolism.

Ai Takeshita, Kazuki Kawakami, Kenryo Furushima, Masayasu Miyajima, Kazushige Sakaguchi

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.

  1. Pooled it
  2. Klotho revisited: tubular heterogeneity reshapes mineral metabolism, aging, and CKD.Pflugers Archiv : European journal of physiology · 2026
    Review
  3. Article
  4. [Potential of early diagnosis and targeted therapy for Klotho protein in chronic kidney disease].Zhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences · 2025
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. FGF23 signalling and physiology.Journal of molecular endocrinology · 2021
    Review
  18. Article
  19. Osteocytic FGF23 and Its Kidney Function.Frontiers in endocrinology · 2020
    Review
  20. FGF23 Synthesis and Activity.Current molecular biology reports · 2019
    Article
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

5 authors at 1 institution in 1 country.

Ai TakeshitaDepartment of Molecular Cell Biology and Molecular Medicine, Institute of Advanced Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, 641-8509, Japan.
Kazuki KawakamiDepartment of Molecular Cell Biology and Molecular Medicine, Institute of Advanced Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, 641-8509, Japan.
Kenryo FurushimaDepartment of Molecular Cell Biology and Molecular Medicine, Institute of Advanced Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, 641-8509, Japan.
Masayasu MiyajimaLaboratory Animal Center, Wakayama Medical University, 811-1 Kimiidera, Wakayama, 641-8509, Japan.
Kazushige SakaguchiDepartment of Molecular Cell Biology and Molecular Medicine, Institute of Advanced Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, 641-8509, Japan. ksaka@wakayama-med.ac.jp.
Wakayama Medical University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Fibroblast growth factor 23 (FGF23) plays critical roles in phosphate handling and vitamin D metabolism in the kidney. However, the effector cells of FGF23 in the kidney remain unclear. αKlotho, a putative enzyme possessing β-glucuronidase activity and also a permissive co-receptor for FGF23 to bind to FGF receptors (FGFRs), is expressed most abundantly in distal convoluted tubules, whereas it is expressed modestly in proximal tubules. Key molecular players of phosphate homeostasis and vitamin D-metabolizing enzymes are known to localize in proximal tubules. To clarify the direct function of FGF23 on proximal tubules, we ablated αKlotho or Fgfr1-4 genes specifically from these tubules using the Cre-loxP-mediated genetic recombination. Both conditional knockout mouse lines showed similar phenotypes that resembled those of systemic αKlotho or Fgf23 knockout mice. Compared with control mice, they showed significantly elevated levels of plasma phosphate, FGF23 and 1,25-dihydroxyvitamin D, ectopic calcification in the kidney and aging-related phenotypes like growth retardation, osteoporosis and shortened lifespan. These findings suggest that the primary function of FGF23 on mineral metabolism is mediated through αKlotho/FGFR co-receptors expressed in proximal tubular cells, and that the putative enzymatic function of αKlotho in the proximal tubule has a minor role in systemic mineral metabolism.

Indexed as

AnimalsCell Cycle ProteinsFibroblast Growth Factor-23Fibroblast Growth FactorsGene Knockdown TechniquesGlucuronidaseImmunohistochemistryIntracellular Signaling Peptides and ProteinsKidney Tubules, DistalKidney Tubules, ProximalKlotho ProteinsMiceMice, KnockoutMice, TransgenicMineralsModels, BiologicalCell Cycle ProteinsFgf23 protein, mouseFibroblast Growth Factor-23Fibroblast Growth FactorsGlucuronidaseIntracellular Signaling Peptides and ProteinsKlotho ProteinsMineralsN-myc Downstream-Regulated Gene 1 ProteinPhosphatesReceptors, Cell SurfaceReceptors, Fibroblast Growth FactorTamoxifenVitamin D

Identifiers

PMID29720668
PMCPMC5932018
OpenAlexW2802373686

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.