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Studie zu Natriumsenkenden vaskulären Effekten (SOLVE)

28. September 2026 aktualisiert von: Katherine T Mills, Tulane University

Ein mechanistischer Versuch zur Reduktion von Natrium in der Nahrung auf Gefäßstruktur und -funktion

The proposed mechanistic trial will test the effect of dietary sodium reduction on cardiac and vascular structure and function in those with elevated blood pressure or hypertension. Findings from this study will fill the knowledge gap on the underlying mechanisms of dietary sodium intake on cardiovascular disease risk in addition to blood pressure and could provide further evidence on sodium reduction for the prevention of cardiovascular disease.

Studienübersicht

Status

Aktiv, nicht rekrutierend

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

High dietary sodium intake increases risk of cardiovascular disease (CVD) independent of established risk factors, including blood pressure (BP). Non-BP mediated mechanisms underlying the increased risk of CVD associated with dietary sodium intake are not well understood, but observational studies suggest direct target organ damage in the heart and vasculature might play an important role. Little evidence exists from randomized controlled trials (RCTs) on target organ effects of dietary sodium reduction, and the National Academy of Medicine has recommended future research to "test the effects of different sodium intake levels on endothelial and vascular function" in order to "to better characterize the relationship between sodium intake and chronic disease". The overall objective of the proposed mechanistic trial is to test the effect of dietary sodium reduction on cardiac and vascular structure and function. Specifically, the proposed trial will test whether dietary sodium reduction (targeting a dietary sodium intake of <2,300 mg/day) will improve left ventricular mass index (LVMI), left ventricular global longitudinal strain (LVGLS), carotid-femoral pulse wave velocity (cfPWV), and flow-mediated dilation (FMD) compared to usual intake. Additionally, we will test whether this effect is independent from BP reduction. We will recruit 256 people with elevated BP or hypertension from the greater New Orleans area and randomly assign them to a dietitian-led behavioral intervention aimed at decreasing dietary sodium intake to <2,300 mg/day for 12 months or to a usual diet. Study outcomes, including cardiac magnetic resonance imaging (CMR)-determined LVMI and LVGLS, cfPWV, and FMD, will be measured at baseline, 6-month, and 12-month clinic visits using standardized protocols with stringent quality control. These outcomes are validated biomarkers for target organ damage and predict the risk of clinical CVD events. In primary analyses, the effect of sodium reduction on each subclinical CVD endpoint will be compared between the sodium reduction and usual diet groups according to the intention-to-treat principle without adjusting for covariates. In secondary analyses, changes in ambulatory and clinical BP will be adjusted to assess the BP-independent effect of dietary sodium reduction on each subclinical CVD endpoint. The proposed trial has 85% statistical power to detect a clinically significant difference in changes of the four co-primary outcomes (10 g/m2 in LVMI, 1.3% in LVGLS, 0.9 m/s in cfPWV, and 1.1% in FMD) over 12 months between the two groups at a 2-sided significance level of 0.0125 (0.05/4). Findings from this trial will fill the knowledge gap of the underlying mechanisms of dietary sodium intake on CVD risk and provide further evidence on sodium reduction for CVD prevention.

Studientyp

Interventionell

Einschreibung (Tatsächlich)

256

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienorte

    • Louisiana
      • New Orleans, Louisiana, Vereinigte Staaten, 70112
        • Tulane University Office of Health Research

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

40 Jahre und älter (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Alle

Beschreibung

Inclusion Criteria:

  • Men or women aged ≥40 years. Individuals <40 years are at a low risk for clinical and subclinical CVD
  • Elevated BP or hypertension (systolic BP ≥120 mmHg and diastolic BP ≥80 mmHg with or without use of antihypertensive medications)

Exclusion Criteria:

  • Glomerular filtration rate (eGFR) <30 or end-stage renal disease (kidney transplant or chronic dialysis)
  • History of cardiovascular disease
  • Shift worker or regularly work at night
  • Cancer requiring chemotherapy or radiation treatment in the previous two years
  • Current pregnancy or breastfeeding or plans to become pregnant during the study
  • Consumption of ≥21 alcoholic drinks/week
  • Current participation in another lifestyle intervention or drug trial
  • Current residence or planned residence that makes it difficult to meet trial requirements
  • Other concerns regarding ability to meet trial requirements (at the discretion of the study coordinator)

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Grundlegende Wissenschaft
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Single

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: sodium reduction intervention

The sodium reduction intervention is a dietician-led behavioral intervention consisting of two phases, first a 3-month intensive intervention phase, followed by a 9-month maintenance phase. The overall goal of the intervention is to reduce sodium intake to <2,300 mg per day based on the most recent guideline from the National Academies of Medicine. Both phases will include individual and group behavioral modification counseling designed to facilitate a reduction in dietary sodium intake.

The sodium reduction intervention is a dietician-led behavioral intervention consisting of two phases, first a 3-month intensive intervention phase, followed by a 9-month maintenance phase. The overall goal of the intervention is to reduce sodium intake to <2,300 mg per day based on the most recent guideline from the National Academies of Medicine. Both phases will include individual and group behavioral modification counseling designed to facilitate a reduction in dietary sodium intake.

Kein Eingriff: Usual Diet

Participants randomized to the usual diet group will receive standard care from their providers with no study intervention.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Change in Left Ventricular Global Longitudinal Strain (LVGLS) from baseline to 12 months
Zeitfenster: 12 months

Cardiac magnetic resonance imaging will be used to determine LVGLS.

12 months
Change in Left Ventricular Mass Index (LVMI) from baseline to 12 months
Zeitfenster: 12 months

Cardiac magnetic resonance imaging will be used to determine left ventricular mass (LVM). LVM will be indexed to body surface area.

12 months
Change in Pulse Wave Velocity (PWV) from baseline to 12 months
Zeitfenster: 12 months

A carotid tonometer will be used to measure carotid-femoral PWV.

12 months
Change in Flow-Mediated Dilation (FMD) from baseline to 12 months
Zeitfenster: 12 months

Endothelial-dependent FMD will be quantified using high resolution ultrasound.

12 months

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Left Ventricular Volumes
Zeitfenster: Baseline, 6 months, and 12 months

Cardiac magnetic resonance imaging will be used to determine left ventricular volumes.

Baseline, 6 months, and 12 months
Left Atrial Maximum and Minimum Volume
Zeitfenster: Baseline, 6 months, and 12 months

Cardiac magnetic resonance imaging will be used to determine left atrial maximum and minimum volumes.

Baseline, 6 months, and 12 months
Left Atrial Ejection Fraction
Zeitfenster: Baseline, 6 months, and 12 months

Cardiac magnetic resonance imaging will be used to determine left atrial ejection fraction.

Baseline, 6 months, and 12 months
Left Atrial Global Strain
Zeitfenster: Baseline, 6 months, and 12 months

Cardiac magnetic resonance imaging will be used to determine left atrial global strain.

Baseline, 6 months, and 12 months
Aortic Pulse Wave Velocity
Zeitfenster: Baseline, 6 months, and 12 months

Cardiac magnetic resonance imaging will be used to determine aortic pulse wave velocity.

Baseline, 6 months, and 12 months

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Mitarbeiter

Ermittler

  • Hauptermittler: Katherine T Mills, PhD, Tulane University

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

25. Januar 2023

Primärer Abschluss (Geschätzt)

31. Dezember 2026

Studienabschluss (Geschätzt)

31. Dezember 2026

Studienanmeldedaten

Zuerst eingereicht

17. Mai 2022

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

19. Mai 2022

Zuerst gepostet (Tatsächlich)

24. Mai 2022

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

1. Oktober 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

28. September 2026

Zuletzt verifiziert

1. September 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • R01HL155559 (US NIH Stipendium/Vertrag)

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

JA

Beschreibung des IPD-Plans

Our study data sharing plan will comply with all NIH policies for data sharing. Data sharing will be executed through the centralized NIH data repository and will be implemented in a timely manner. The study data, including data from baseline and follow-up visits, will be prepared for transmission to the NHLBI data repository - the Biologic Specimen and Data Repository Information Coordinating Center (BioLINCC). Data will be prepared by the study coordinating center and sent to the PO for review prior to release. These data will be free of identifiers that allow identification of individual research participants either directly or through "deductive disclosure." In addition, we will offer, through our public access website, opportunities for outside investigators to collaborate with us using complete study data.

IPD-Sharing-Zeitrahmen

The data sets will be submitted to the NHLBI Program Official (PO) no later than 3 years after the end of the final patient follow-up or 2 years after the main paper of the trial has been published, whichever comes first.

IPD-Sharing-Zugriffskriterien

Upon request

Art der unterstützenden IPD-Freigabeinformationen

  • STUDIENPROTOKOLL
  • SAFT
  • ICF

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .