Evidence map›Paper›PMID 26701978›Full record

ArticleJournal of the American Society of Nephrology : JASN2016

Severe Salt-Losing Syndrome and Hyperkalemia Induced by Adult Nephron-Specific Knockout of the Epithelial Sodium Channel α-Subunit.

Romain Perrier, Emilie Boscardin, Sumedha Malsure, Chloé Sergi, Marc P Maillard, Johannes Loffing, Dominique Loffing-Cueni, Mads Vaarby Sørensen, Robert Koesters, Bernard C Rossier and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in Journal of the American Society of Nephrology : JASN, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
2.1field-weighted citation impact, top 12% 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

27 citing papers in PubMed, 41 citations in OpenAlex.

  1. Review
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  13. Interaction between Epithelial Sodium ChannelJournal of the American Society of Nephrology : JASN · 2020
    Article
  14. Review
  15. Article
  16. Article
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  18. Article
  19. Plasma Potassium Determines NCC Abundance in Adult Kidney-SpecificJournal of the American Society of Nephrology : JASN · 2018
    Article
  20. Review
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

12 authors at 5 institutions in 2 countries.

Romain PerrierDepartment of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland;
Emilie BoscardinDepartment of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland; Swiss National Center of Competence in Research "Kidney.CH", Zurich, Switzerland;
Sumedha MalsureDepartment of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland;
Chloé SergiDepartment of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland;
Marc P MaillardService of Nephrology Department, University Hospital of Lausanne, Lausanne, Switzerland;
Johannes LoffingSwiss National Center of Competence in Research "Kidney.CH", Zurich, Switzerland; Institute of Anatomy, University of Zurich, Zurich, Switzerland; and.
Dominique Loffing-CueniSwiss National Center of Competence in Research "Kidney.CH", Zurich, Switzerland; Institute of Anatomy, University of Zurich, Zurich, Switzerland; and.
Mads Vaarby SørensenSwiss National Center of Competence in Research "Kidney.CH", Zurich, Switzerland; Institute of Anatomy, University of Zurich, Zurich, Switzerland; and.
Robert KoestersDepartment of Nephrology, Hôpital Tenon, Université Pierre et Marie Curie, Paris, France.
Bernard C RossierDepartment of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland; Edith.Hummler@unil.ch Simona.Frateschi@unil.ch.
Simona FrateschiDepartment of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland; Swiss National Center of Competence in Research "Kidney.CH", Zurich, Switzerland;
Edith HummlerDepartment of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland; Swiss National Center of Competence in Research "Kidney.CH", Zurich, Switzerland; Edith.Hummler@unil.ch Simona.Frateschi@unil.ch.
University of Lausanne · CHFORS – Swiss Centre of Expertise in the Social Sciences · CHSorbonne Université · FRUniversity Hospital of Lausanne · CHUniversity of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Systemic pseudohypoaldosteronism type 1 (PHA-1) is a severe salt-losing syndrome caused by loss-of-function mutations of the amiloride-sensitive epithelial sodium channel (ENaC) and characterized by neonatal life-threatening hypovolemia and hyperkalemia. The very high plasma aldosterone levels detected under hypovolemic or hyperkalemic challenge can lead to increased or decreased sodium reabsorption, respectively, through the Na(+)/Cl(-) cotransporter (NCC). However, the role of ENaC deficiency remains incompletely defined, because constitutive inactivation of individual ENaC subunits is neonatally lethal in mice. We generated adult inducible nephron-specific αENaC-knockout mice (Scnn1a(Pax8/LC1)) that exhibit hyperkalemia and body weight loss when kept on a regular-salt diet, thus mimicking PHA-1. Compared with control mice fed a regular-salt diet, knockout mice fed a regular-salt diet exhibited downregulated expression and phosphorylation of NCC protein, despite high plasma aldosterone levels. In knockout mice fed a high-sodium and reduced-potassium diet (rescue diet), although plasma aldosterone levels remained significantly increased, NCC expression returned to control levels, and body weight, plasma and urinary electrolyte concentrations, and excretion normalized. Finally, shift to a regular diet after the rescue diet reinstated the symptoms of severe PHA-1 syndrome and significantly reduced NCC phosphorylation. In conclusion, lack of ENaC-mediated sodium transport along the nephron cannot be compensated for by other sodium channels and/or transporters, only by a high-sodium and reduced-potassium diet. We further conclude that hyperkalemia becomes the determining factor in regulating NCC activity, regardless of sodium loss, in the ENaC-mediated salt-losing PHA-1 phenotype.

Indexed as

AnimalsEpithelial Sodium ChannelsHyperkalemiaMiceMice, KnockoutNephronsPseudohypoaldosteronismSeverity of Illness IndexEpithelial Sodium ChannelsaldosteroneENaCtransgenic mouse

Identifiers

PMID26701978
PMCPMC4978035
OpenAlexW2289906531

What OpenQuestion holds

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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.