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HIV-1NCT04956861

HIV-1, Insufficient Sleep and Vascular Endothelial Dysfunction

A study testing Individualized Targeted Sleep in people with HIV-1, run by University of Colorado, Boulder at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The investigators hypothesize that chronic insufficient sleep is associated with diminished endothelium-dependent nitric oxide-mediated vasodilation and tissue-type plasminogen activator release in anti-retroviral (ART)-treated HIV-1-seropositive adults. Read more about this study

Who is it for?
Ages 40 to 75 years
Conditions the study is for
HIV-1
What is being tested?
Individualized Targeted Sleep
Could I receive a placebo?
No, everyone receives an active treatment
How many people
88 participants
Where
1 siteUnited States
Study dates
17 Dec 2015to 7 Aug 2020
Phase
Interventional
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 40 to 75 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Subjects will be men and women of all races and ethnic backgrounds aged 40-75 years with documented HIV-1 infection.
  • Subjects will be HIV-1-seropositive individuals on a stable DHHS approved ART regimen for at least 6 months, with documented virologic suppression (<50 copies HIV-1 RNA/mL) for at least 3 months.
  • All subjects must have CD4+ T cell counts >200 cells/mm3 at the time of study entry.
  • Subjects will be free of overt CVD as assessed by: a) medical history; b) physical examination; c) electrocardiogram and BP at rest and maximal exercise; d) complete blood chemistries, lipid and lipoprotein, glucose, insulin and hematological evaluation.
  • All candidates will be sedentary as determined from the Stanford Physical Activity Questionnaire (<35 kcal/wk) and will not have engaged in any program of regular physical activity for at least 6 months prior to the study.

Who cannot join

  • Receiving hormone replacement therapy (HRT) currently or in the preceding 3-year period.
  • Pre- or peri-menopausal women

Trial locations and contacts

1 site in 1 country.

United States1 site
  • UC-Boulder Clinical and Translational Research Center

    Boulder, Colorado, 80309

Other trials in United States

About this study

The investigators hypothesize that chronic insufficient sleep is associated with diminished endothelium-dependent nitric oxide-mediated vasodilation and tissue-type plasminogen activator release in anti-retroviral (ART)-treated HIV-1-seropositive adults. Furthermore, the investigators hypothesize that the postulated diminishment in endothelial vasodilator and fibrinolytic function with insufficient sleep will be due, at least in part, to increased oxidative stress. Moreover, increasing sleep duration and improving sleep quality will increase both endothelium-dependent nitric oxide-mediated vasodilation and endothelial tissue-type plasminogen activator release in ART-treated HIV-1-seropositive adults. Increases in endothelial vasodilator and fibrinolytic function will be due, at least in part, to reduced oxidative stress.

Conditions
HIV-1
Being tested
Individualized Targeted Sleep
Keywords
Sleep

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Individualized Targeted SleepBehavioural

    The investigators will employ an 8-week individualized targeted sleep intervention. Individualized targeted interventions have the advantage of improving adherence, reducing attrition, and making the strategy personally meaningful.

Study groups in NCT04956861
Study groupRoleWhat they receive
Phase 1No interventionPhase 1 is a cross-sectional study to compare endothelial vasodilator and fibrinolytic function in ART-treated HIV-1-seropositive adults who habitually sleep more than 7 hours/night (normal sleep) and those who habitually sleep less than 7 hours/night (short sleep).
Phase 2ExperimentalPhase 2 is an intervention study to determine the effects of individualized targeted sleep interventions that increase sleep duration and improve sleep quality on endothelial vasodilator and fibrinolytic function in ART-treated HIV-1-seropositive adults who habitually sleep less than 7 hours/night.
Receives: Behavioral: Individualized Targeted Sleep

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Phase 1: Forearm Blood Flow (FBF) Response to Acetylcholine (ACh)

    FBF was measured via strain-gauge venous occlusion plethysmography in response to saline for 5 minutes and then to ACh (4.0, 8.0 and 16.0 ug/100 mL tissue/min; the doses of Acetylcholine infused into the brachial artery) for 5 minutes at each dose. Flows during the last minute of saline and each drug dose were measured and the mean value reported.

    Values after saline and after ACh 4.0, 8.0 and 16.0 at week 3 are reported.

    Measured: FBF response to ACh will be measured during Phase 1 at the participants visit 3 which is ~3 weeks from their respective start date.

  2. Phase 2: FBF Response to Acetylcholine (ACh)

    FBF to ACh will be measured following the participants 8 week sleep intervention.

    Measured: FBF response to ACh will be measured during Phase 2 at the participants visit 9 which is ~11 weeks from their respective start date

  3. Phase 1: Forearm Blood Flow (FBF) Response to Sodium Nitroprusside (NTP)

    Measured: FBF response to NTP will be measured during Phase 1 at the participants visit 3 which is ~3 weeks from their respective start date.

  4. Phase 2: Forearm Blood Flow (FBF) Response to Sodium Nitroprusside (NTP)

    FBF to NTP will me measured following the participants 8 week sleep intervention

    Measured: FBF response to NTP will be measured during Phase 2 at the participants visit 9 which is ~11 weeks from their respective start date

  5. Phase 1: Endothelial Tissue Type Plasminogen Activator (t-PA) Release in Response to Bradykinin (BDK)

    Net endothelial release of t-PA antigen in response to BDK was calculated using the following equation:

    Net release = (Cv-Ca) x (FBF x [101-hematocrit/100]) where Cv and Ca represent the concentration in the vein and artery respectively. A positive difference indicated a net release and a negative difference, net uptake. Arterial and venous blood samples were collected simultaneously at the end of saline and each dose of BDK (12.5, 25.0 and 50.0 ng/100mL tissue/min). Enzyme immunoassay was used to determine t-PA antigen concentrations. Hematocrit was measured in triplicate using the standard microhematocrit technique and corrected for trapped plasma volume within the red blood cells.

    Measured: t-PA release will be measured during Phase 1 at the participants visit 3 which is ~3 weeks from their respective start date.

  6. Phase 2: Endothelial t-PA Release in Response to Bradykinin (BDK)

    Endothelial t-PA release will me measured following the participants 8 week sleep intervention. Net endothelial release of t-PA antigen in response to BDK was calculated using the following equation:

    Net release = (Cv-Ca) x (FBF x [101-hematocrit/100]) where Cv and Ca represent the concentration in the vein and artery respectively. A positive difference indicated a net release and a negative difference, net uptake. Arterial and venous blood samples were collected simultaneously at the end of saline and each dose of BDK (12.5, 25.0 and 50.0 ng/100mL tissue/min). Enzyme immunoassay was used to determine t-PA antigen concentrations. Hematocrit was measured in triplicate using the standard microhematocrit technique and corrected for trapped plasma volume within the red blood cells.

    Measured: t-PA release will be measured during Phase 2 at the participants visit 9 which is ~11 weeks from their respective start date

  7. Phase 1: FBF Response to ACh+Ng-monomethyl-L-arginine (L-NMMA)

    To determine the contribution of nitric oxide to ACh-mediated vasodilation, FBF to ACh was quantified before and after infusion of L-NMMA. After ACh was infused as described in Outcome measure 1 the ACh dose response was repeated with the continuous infusion of L-NMMA.

    Measured: FBF response to ACh+L-NMMA will be measured during Phase 1 at the participants visit 3 which is ~3 weeks from their respective start date.

  8. Phase 1: FBF Response to ACh+Vitamin C

    After allowing sufficient time (45 minutes) for FBF to return to levels similar to that of saline Vitamin C was infused at a constant rate (12 mg/100 mL tissue/min) for 5 minutes. This vitamin C concentration has been show to improve endothelium dependent vasodilation in conditions associated with oxidative stress. Vitamin C infusion was maintained at the same rate while the ACh dose response was repeated.

    Measured: FBF response to ACh+Vitamin C will be measured during Phase 1 at the participants visit 3 which is ~3 weeks from their respective start date.

  9. Phase 2: FBF Response to ACh+L-NMMA

    FBF to ACh+L-NMMA will me measured following the participants 8 week sleep intervention. To determine the contribution of nitric oxide to ACh-mediated vasodilation, FBF to ACh was quantified before and after infusion of L-NMMA. After ACh was infused as described in Outcome measure 1 the ACh dose response was repeated with the continuous infusion of L-NMMA.

    Measured: FBF response to ACh+L-NMMA will be measured during Phase 2 at the participants visit 9 which is ~11 weeks from their respective start date

  10. Phase 2: FBF Response to ACh+Vitamin C

    FBF to ACh+Vitamin C will me measured following the participants 8 week sleep intervention. After allowing sufficient time (45 minutes) for FBF to return to levels similar to that of saline Vitamin C was infused at a constant rate (12 mg/100 mL tissue/min) for 5 minutes. This vitamin C concentration has been show to improve endothelium dependent vasodilation in conditions associated with oxidative stress. Vitamin C infusion was maintained at the same rate while the ACh dose response was repeated.

    Measured: FBF response to ACh+Vitamin C will be measured during Phase 2 at the participants visit 9 which is ~11 weeks from their respective start date

Secondary outcomes (1)
  1. Nightly Sleep Duration

    Nightly sleep duration was calculated as the weighted average of weeknights and weekend values [(5 x weekday sleep duration)+(2 x weekend sleep duration)/7].

    Measured: Baseline

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Jul 2021
  2. Study start17 Dec 2015
  3. Primary completion7 Aug 2020
  4. Study completion7 Aug 2020

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Basic science
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
88 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04956861
Sponsor's protocol ID
150465
Status last verified
Dec 2024
First submitted
23 Jun 2021
Last updated
23 Jan 2025
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A study testing Individualized Targeted Sleep in people with HIV-1, run by University of Colorado, Boulder at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 23 Jan 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 23 Jan 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Phase 1: Forearm Blood Flow (FBF) Response to Acetylcholine (ACh) (time frame: FBF response to ACh will be measured during Phase 1 at the participants visit 3 which is ~3 weeks from their respective start date.). The study lists 10 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 23 Jan 2025.

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