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CompletedNCT00654966Updated Jul 20, 2011

Evaluation of the Effects of Urotensin-II and Soluble Epoxide Hydrolase Inhibitors on Skin Microvessel Tone in Patients With Heart Failure, and in Healthy Volunteers

A Phase 2 interventional study of Urotensine II and Soluble epoxide hydrolase in Heart Failure, sponsored by Monash University. Completed at 1 site in Australia. Open to participants aged 18 Years to 80 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2011-07-20.

Sponsored by Monash University · Phase 2, Interventional, and Basic science

Phase
Phase 2
Study type
Interventional
Enrollment
16
Allocation
Non-randomized
Ages
18 Years to 80 Years
Sex
All
01

Study summary

Urotensin II (U-II) is newly discovered protein that may play an important role in human health and disease. U-II has been found to be a potent vasoconstrictor (narrower of blood vessels) which therefore may be involved in important diseases such as chronic heart failure - CHF (weak heart muscle disease). Many vasoconstrictors have been found to have effects on key organs such as the heart. Preliminary data by our group have demonstrated this is true of U-II. Recent evidence shows that in CHF, U-II levels in the blood are increased.

The proposed study seek to determine the effect of blocking a possible downstream mediator of U-II on blood vessels by administration of soluble epoxide hydrolase inhibitor (sEHI). There will be 2 study groups 1) Healthy volunteers and, 2) CHF patients.

Each arm of the study will run independently and will require 16 participants each (16 normal subjects and 16 CHF subjects). Participants will be screened to ensure that they are eligible. CHF patients will be required to withdraw from their CHF medication 24 hours prior to the study day (except for diuretics). On the study day, sEHI will be administered on the skin of participants in 3 asceding dosages. The technique to be used is iontophoresis. This is a non invasive technique in which a small amount of the compound is placed on the skin of the forearm. The drug is delivered across the skin by passing a small electric current over the area. The change in blood flow is then measured and analysed. We will also administer U-II agonist, noradrenaline, and distilled water (all via iontophoresis). Noradrenaline will be used a positive constrictor control. Change in blood flow will be assessed by Laser Doppler Velocimetry.

If it is found that the sEHI is able to prevent blood vessel constriction in CHF patients, then it may represent a major therapeutic advance in the management of CHF.

02

Conditions studied

  • Heart Failure

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Keywords

  • Urotensin II
  • Soluble epoxide hydrolase
  • Iontophoresis
  • Healthy volunteers
03

In context

Heart Failure

5,701 studies on the registry are indexed under Heart Failure; 1,220 are open to participants now.

This study's enrollment of 16 is below the median of 72 across 3,736 interventional studies indexed under Heart Failure.

Browse Heart Failure studies →

Lead sponsor

Monash University is the lead sponsor of 81 studies on the registry; 22 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Confirmed written informed consent.
  • Male/Female over 18 and under 80 years of age.
  • Females must be non-pregnant, non-lactating and using reliable means of contraception (surgical sterilisation or a barrier method such as a condom). The oral contraceptive pill is an exclusion to this study.
  • Patients with CHF will be required to have left ventricular fractional shortening [LVFS] of \<22% or LVEF \< 40% and New York Heart Association functional class [NYHA FC] II-III symptoms
  • Body mass index (BMI) between 18-35 kg/m2.
  • Screening clinical laboratory tests including liver function tests and HbA1c are within the normal reference range for the investigative site.
  • Electrocardiogram (ECG) results considered within normal limits, as determined by the Investigator.

Exclusion criteria

Exclusion Criteria:

  • Smokers
  • History or presence of cardiovascular, respiratory, hepatic, renal, gastrointestinal, neurological, or other disorders capable of altering the absorption, metabolism, or elimination of drugs, or of constituting a risk factor when exposed to the study medication.
  • Those requiring concomitant medications that will affect cardiovascular or endothelial function or blood pressure control (eg cholesterol lowering medication, hormone replacement therapy, aspirin, NSAIDS).
  • Patients receiving Hormone Replacement Therapy.
  • Known allergy or hypersensitivity to urotensin or urotensin receptor antagonists or its excipients, or related drugs, or a history of relevant adverse drug reactions of any origin.
  • Regular alcohol intake greater than 14 units/week or is unwilling to comply with the alcohol prohibition for the duration of the study (1 unit of alcohol is equivalent to: 12 ounces of beer, 4 ounces of wine, or 1 ounce of 50-proof hard liquor).
  • History of drug abuse.
  • Screening biochemistry > 20 % outside normal limits.
  • Patients who are thought to be terminally ill or immuno-compromised
  • Patients who have previously been enrolled in this study or have received other experimental medications in the last 4 weeks.
  • Patients who are unlikely to comply with study procedures
05

Study design

Phase
Phase 2
Primary purpose
Basic science
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
16 participants (actual)

Study arms

  • Experimental
    1

    Heart failure patients

    Drug: Urotensine II · Drug: Soluble epoxide hydrolase

  • Active comparator
    2

    Healthy subjects

    Drug: Urotensine II · Drug: Soluble epoxide hydrolase

Interventions

  • DrugUrotensine II

    A few drops of the drug will be administered to the skin by iontophoresis.

  • DrugSoluble epoxide hydrolase

    A few drops of the drug will be administered to the skin by iontophoresis.

06

What researchers measure

Primary outcomes

  1. To compare the vasoactive role of Soluble epoxide hydrolase in the healthy subjects and CHF patients with iontophoresis.

    Time frame: 2 hours

07

Study locations

1 site
  • Alfred Hospital
    Melbourne, Victoria 3004, Australia
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 20, 2011, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00654966
Lead sponsor
Monash University
First posted
Apr 9, 2008
Start date
Jun 2009
Primary completion
Dec 2010
Completion
Dec 2010
Last update
Jul 20, 2011

Study contacts

Henry Krum, MBBS FRACP PhD
principal investigator · Monash University / Alfred Hospital

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jul 2011. You cannot join it, but the record below documents what was studied.

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