Evidence map›Paper›PMID 33492394›Full record

ArticleNephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association2022

Dietary sodium intake does not alter renal potassium handling and blood pressure in healthy young males.

Antoinette Pechère-Bertschi, Valérie Olivier, Michel Burnier, Khalil Udwan, Sophie de Seigneux, Belén Ponte, Marc Maillard, Pierre-Yves Martin, Eric Feraille

Open access · hybridAbstract read
In one paragraph

Article in Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 pooled it
0.4field-weighted citation impact, top 45% 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

3 citing papers in PubMed, 1 synthesis or guideline pooled it, 6 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. High-salt diet modulates endocrine regulation between cortisol and FGF23.Pflugers Archiv : European journal of physiology · 2026
    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

9 authors at 3 institutions in 1 country.

Antoinette Pechère-BertschiService of Nephrology and Hypertension, University Hospital Geneva, Geneva, Switzerland.
Valérie OlivierService of Nephrology and Hypertension, University Hospital Geneva, Geneva, Switzerland.ORCID 0000-0001-9308-4853
Michel BurnierService of Nephrology and Hypertension, CHUV, Lausanne, Switzerland.
Khalil UdwanDepartment of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland.
Sophie de SeigneuxService of Nephrology and Hypertension, University Hospital Geneva, Geneva, Switzerland.
Belén PonteService of Nephrology and Hypertension, University Hospital Geneva, Geneva, Switzerland.
Marc MaillardService of Nephrology and Hypertension, CHUV, Lausanne, Switzerland.
Pierre-Yves MartinService of Nephrology and Hypertension, University Hospital Geneva, Geneva, Switzerland.
Eric FerailleService of Nephrology and Hypertension, University Hospital Geneva, Geneva, Switzerland.
University of Geneva · CHUniversity Hospital of Geneva · CHUniversity Hospital of Lausanne · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe effects of sodium (Na+) intakes on renal handling of potassium (K+) are insufficiently studied.

methodsWe assessed the effect of Na+ on renal K+ handling in 16 healthy males assigned to three 7-day periods on low salt diet [LSD, 3 g sodium chloride (NaCl)/day], normal salt diet (NSD, 6 g NaCl/day) and high salt diet (HSD, 15 g NaCl/day), with constant K+ intake. Contributions of distal NaCl co-transporter and epithelial Na+ channel in the collecting system on K+ and Na+ handling were assessed at steady state by acute response to 100 mg oral hydrochlorothiazide and with addition of 10 mg of amiloride to hydrochlorothiazide, respectively.

resultsDiurnal blood pressure slightly increased from 119.30 ± 7.95 mmHg under LSD to 123.00 ± 7.50 mmHg (P = 0.02) under HSD, while estimated glomerular filtration rate increased from 133.20 ± 34.68 mL/min under LSD to 187.00 ± 49.10 under HSD (P = 0.005). The 24-h K+ excretion remained stable on all Na+ intakes (66.28 ± 19.12 mmol/24 h under LSD; 55.91 ± 21.17 mmol/24 h under NSD; and 66.81 ± 20.72 under HSD, P = 0.9). The hydrochlorothiazide-induced natriuresis was the highest under HSD (30.22 ± 12.53 mmol/h) and the lowest under LSD (15.38 ± 8.94 mmol/h, P = 0.02). Hydrochlorothiazide increased kaliuresis and amiloride decreased kaliuresis similarly on all three diets.

conclusionsNeither spontaneous nor diuretic-induced K+ excretion was influenced by Na+ intake in healthy male subjects. However, the respective contribution of the distal convoluted tubule and the collecting duct to renal Na+ handling was dependent on dietary Na+ intake.

Indexed as

PotassiumSodium, DietaryBlood PressureHumansKidney Tubules, DistalMaleNatriuresisPotassium, DietarySodiumSodium Chloride, DietaryPotassiumPotassium, DietarySodiumSodium Chloride, DietarySodium, Dietaryhypertensionpotassium, renal tubulerenin–angiotensin–aldosterone systemsodium intake

Identifiers

PMID33492394
PMCPMC8875469
OpenAlexW3121602111

What OpenQuestion holds

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Registered trials

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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.