Evidence map›Paper›PMID 21081491›Full record

ArticleThe Journal of biological chemistry2011

Tamm-Horsfall glycoprotein interacts with renal outer medullary potassium channel ROMK2 and regulates its function.

Aparna Renigunta, Vijay Renigunta, Turgay Saritas, Niels Decher, Kerim Mutig, Siegfried Waldegger

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 2 pooled it
2.6field-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

66 citing papers in PubMed, 2 syntheses or guidelines pooled it, 115 citations in OpenAlex.

  1. Pooled it
  2. Common variants in UMOD associate with urinary uromodulin levels: a meta-analysis.Journal of the American Society of Nephrology : JASN · 2014
    Pooled it
  3. Trial
  4. Review
  5. Endocrine regulation of uromodulin in aging.Frontiers in endocrinology · 2026
    Review
  6. Elevated Zinc and Potassium Levels in Renal Calculi Indicate Distinct Pathophysiological Mechanisms in Urolithiasis.Pathophysiology : the official journal of the International Society for Pathophysiology · 2025
    Article
  7. Review
  8. Review
  9. Article
  10. Uromodulin biology.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2024
    Review
  11. Article
  12. Article
  13. The role of uromodulin in cardiovascular disease: a review.Frontiers in cardiovascular medicine · 2024
    Review
  14. Review
  15. A founderJournal of medical genetics · 2023
    Article
  16. Role of Uromodulin in Salt-Sensitive Hypertension.Hypertension (Dallas, Tex. : 1979) · 2022
    Review
  17. Review
  18. Review
  19. Autosomal dominant tubulointerstitial kidney disease: A review.American journal of medical genetics. Part C, Seminars in medical genetics · 2022
    Review
  20. Phenome-Wide Association Study ofKidney international reports · 2022
    Article

6 more citing papers are in PubMed but not listed here.

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

6 authors at 2 institutions in 1 country.

Aparna ReniguntaDepartment of Pediatric Nephrology, Children's Hospital, Philipps University of Marburg, Baldingerstr., 35043 Marburg, Germany. renigunt@med.uni-marburg.de
Vijay Renigunta
Turgay Saritas
Niels Decher
Kerim Mutig
Siegfried Waldegger
Philipps University of Marburg · DECharité - Universitätsmedizin Berlin · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Tamm-Horsfall glycoprotein (THGP) or Uromodulin is a membrane protein exclusively expressed along the thick ascending limb (TAL) and early distal convoluted tubule (DCT) of the nephron. Mutations in the THGP encoding gene result in Familial Juvenile Hyperuricemic Nephropathy (FJHN), Medullary Cystic Kidney Disease type 2 (MCKD-2), and Glomerulocystic Kidney Disease (GCKD). The physicochemical and biological properties of THGP have been studied extensively, but its physiological function in the TAL remains obscure. We performed yeast two-hybrid screening employing a human kidney cDNA library and identified THGP as a potential interaction partner of the renal outer medullary potassium channel (ROMK2), a key player in the process of salt reabsorption along the TAL. Functional analysis by electrophysiological techniques in Xenopus oocytes showed a strong increase in ROMK current amplitudes when co-expressed with THGP. The effect of THGP was specific for ROMK2 and did not influence current amplitudes upon co-expression with Kir2.x, inward rectifier potassium channels related to ROMK. Single channel conductance and open probability of ROMK2 were not altered by co-expression of THGP, which instead increased surface expression of ROMK2 as determined by patch clamp analysis and luminometric surface quantification, respectively. Despite preserved interaction with ROMK2, disease-causing THGP mutants failed to increase its current amplitude and surface expression. THGP(-/-) mice exhibited increased ROMK accumulation in intracellular vesicular compartments when compared with WT animals. Therefore, THGP modulation of ROMK function confers a new role of THGP on renal ion transport and may contribute to salt wasting observed in FJHN/MCKD-2/GCKD patients.

Indexed as

AnimalsGoutHumansHyperuricemiaIon TransportKidneyKidney DiseasesKidney Diseases, CysticMembrane PotentialsMiceMice, KnockoutMutationOocytesPolycystic Kidney, Autosomal DominantPotassium Channels, Inwardly RectifyingSaccharomyces cerevisiaeKCNJ1 protein, humanKcnj1 protein, mousePotassium Channels, Inwardly RectifyingUMOD protein, humanUmod protein, mouseUromodulin

Identifiers

PMID21081491
PMCPMC3023518
OpenAlexW1979512288

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.