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Regression of Fatty Heart by Valsartan Therapy

NCT00745953 · Status: WITHDRAWN · Phase: PHASE4 · Type: INTERVENTIONAL

Last updated 2019-01-17

No results posted yet for this study

Summary

Traditionally, obesity is considered an indirect cause of heart disease. Obese individuals typically present with a number of traditional Framingham risk factors (hypertension, dyslipidemia, and type 2 diabetes), predisposing them to heart attacks and subsequent heart failure. However, an emerging body of basic research revisits a hypothesis that fat is a direct cardiotoxin. Under healthy conditions, most triglyceride is stored in fatty tissue (adipocytes) while the amount of triglyceride stored in non-adipocyte tissues (such as the pancreas, the liver, skeletal muscle, and heart) is minimal and very tightly regulated. When this regulation is disrupted, intracellular triglyceride accumulates excessively in these organs ("steatosis") and has been implicated in activating adverse pathways which culminate in irreversible cell death ("lipotoxicity"), leading to several well-recognized clinical syndromes. These include non-alcoholic steatohepatitis (NASH), pancreatic beta-cell failure in type 2 diabetes, and dilated cardiomyopathy.

It has been recently observed that angiotensin II receptor blockers (ARBs) in addition to lowering blood pressure improve insulin sensitivity and decrease the risk for type 2 diabetes. This study will test the above theory in two study groups: Valsartan vs. Hydrochlorothiazide. We hypothesize that in obese humans with elevated myocardial triglycerides, blockade of the renin-angiotensin system (Valsartan group) will reduce myocardial fat with improvement of insulin sensitivity and heart function.

Conditions

  • Metabolic Syndrome
  • Lipotoxicity

Interventions

DRUG

Valsartan

Valsartan 320mg PO daily for 8 months

DRUG

Hydrochlorothiazide

Hydrochlorothiazide 25mg PO daily for 8 months

Sponsors & Collaborators

Principal Investigators

  • Ronald G Victor, MD · University of Texas Southwestern Medical Center

  • Lidia S Szczepaniak, PhD · University of Texas Southwestern Medical Center

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
50 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2007-08-31
Primary Completion
2009-08-31
Completion
2009-08-31

Countries

  • United States

Study Locations

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Entities

Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00745953 on ClinicalTrials.gov