Evidence map›Paper›PMID 27663039›Full record

Trial reportAmerican journal of kidney diseases : the official journal of the National Kidney Foundation2016

Low-Osmolar Diet and Adjusted Water Intake for Vasopressin Reduction in Autosomal Dominant Polycystic Kidney Disease: A Pilot Randomized Controlled Trial.

Osama W Amro, Jessica K Paulus, Farzad Noubary, Ronald D Perrone

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in American journal of kidney diseases : the official journal of the National Kidney Foundation, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 2 pooled it
7.2field-weighted citation impact, top 3% 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

25 citing papers in PubMed, 2 syntheses or guidelines pooled it, 61 citations in OpenAlex.

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  19. Autosomal dominant polycystic kidney disease: updated perspectives.Therapeutics and clinical risk management · 2019
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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

4 authors at 1 institution in 1 country.

Osama W AmroDivision of Nephrology, Department of Medicine, Tufts Medical Center, Boston, MA; Tufts University School of Medicine, Boston, MA.
Jessica K PaulusTufts University School of Medicine, Boston, MA; The Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, Boston, MA; Tufts Clinical and Translational Science Institute, Tufts University, Boston, MA.
Farzad NoubaryTufts University School of Medicine, Boston, MA; The Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, Boston, MA; Tufts Clinical and Translational Science Institute, Tufts University, Boston, MA.
Ronald D PerroneDivision of Nephrology, Department of Medicine, Tufts Medical Center, Boston, MA; Tufts University School of Medicine, Boston, MA. Electronic address: rperrone@tuftsmedicalcenter.org.
Tufts Medical Center · US

Funding

Tufts Clinical and Translational Research InstituteUL1TR001064 · NCATS · TUFTS UNIVERSITY BOSTON · PI SELKER, HARRY P. · 2013 to 2017
$26.4M
Epidemiology, Clinical Trials and Outcomes Research In NephrologyT32DK007777 · NIDDK · TUFTS MEDICAL CENTER · PI SARNAK, MARK J · 1999 to 2020
$4.1M
NCATS NIH HHS UL1 TR001064NIDDK NIH HHS T32 DK007777
6 · The paper itself

Abstract

backgroundAutosomal dominant polycystic kidney disease (ADPKD) affects millions of people worldwide. Vasopressin promotes disease progression. STUDY

designA randomized controlled trial with equal (1:1) allocation. SETTING &

participantsThis trial examined the effect of combining a low-osmolar (low-sodium [1,500mg/d], low-protein [0.8g per kilogram of body weight]) diet and adjusted water intake on vasopressin secretion in 34 patients with ADPKD.

interventionParticipants were randomly assigned to receive a low-osmolar diet followed by adjusted water intake to achieve urine osmolality ≤ 280mOsm/kg water versus no intervention for 2 weeks. OUTCOME: The primary outcome of the study was change (delta) in copeptin levels and urine osmolality between the intervention and control groups from baseline to 2 weeks. MEASUREMENTS: Fasting plasma copeptin level, 24-hour urine osmolality, and total solute intake.

resultsBaseline characteristics of the 2 groups were similar. Mean plasma copeptin levels and urine osmolality declined from 6.2±3.05 (SD) to 5.3±2.5pmol/L (P=0.02) and from 426±193 to 258±117mOsm/kg water (P=0.01), respectively, in the intervention group compared to a nonsignificant change in the control group (from 4.7±3.6 to 5.07±4pmol/L [P=0.2] and 329±159 to 349±139mOsm/kg water [P=0.3], respectively). The change in copeptin levels (primary outcome) and urine osmolality was statistically significant between the intervention and control groups (delta copeptin, -0.86±1.3 vs +0.39±1.2pmol/L [P=0.009]; delta urine osmolality, -167±264 vs +20±80mOsm/kg water [P=0.007], respectively). Total urinary solute decreased in only the intervention group and significantly differed between groups at week 1 (P=0.03), reducing mean water prescription from 3.2 to 2.6L/d. LIMITATIONS: Small sample size and short follow-up.

conclusionsWe developed a stepwise dietary intervention that led to a significant reduction in vasopressin secretion in patients with ADPKD. Furthermore, this intervention led to a reduction in water required for vasopressin reduction.

Indexed as

DrinkingAdolescentAdultArginine VasopressinFemaleHumansMaleMiddle AgedOsmolar ConcentrationPilot ProjectsPolycystic Kidney, Autosomal DominantYoung AdultArginine VasopressinAutosomal dominant polycystic kidney disease (ADPKD)clinical trialcopeptinnutritionosmolalityproteinsaltureavasopressinwater

Identifiers

PMID27663039
PMCPMC5123924
OpenAlexW2522215880

What OpenQuestion holds

Textmetadata
LicenceTDM
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.