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.
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
- Type of treatment
- Lifestyle or therapy programme
- 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
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 group | Role | What they receive |
|---|---|---|
| Phase 1 | No intervention | Phase 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 2 | Experimental | Phase 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.
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.
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
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.
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
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.
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
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.
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.
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
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)
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.
- First posted9 Jul 2021
- Study start17 Dec 2015
- Primary completion7 Aug 2020
- Study completion7 Aug 2020
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for HIV-1Studies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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)
Sponsor and investigators
- Lead sponsor
- University of Colorado, Boulder
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Christopher DeSouza, University of Colorado, Boulder
- Investigators
- Christopher DeSouza, PhD, Principal investigator, University of Colorado, Boulder
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
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 23 Jan 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- HIV-1, Insufficient Sleep and Vascular Endothelial Dysfunction
- ClinicalTrials.gov ID
- NCT04956861
- Acronym / sponsor ID
- 150465
- Conditions
- HIV-1
- Keywords
- Sleep
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 88 participants (actual)
- Lead sponsor
- University of Colorado, BoulderUniversity, hospital or other
- Study start
- 17 Dec 2015 (actual)
- Primary completion
- 7 Aug 2020 (actual)
- Study completion
- 7 Aug 2020 (actual)
- First posted
- 9 Jul 2021 (actual)
- Results
- Posted 23 Jan 2025
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Study design
- Primary purpose
- Basic science
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Phase 1 | No intervention | –Phase 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 2 | Experimental | Behavioral: Individualized Targeted SleepPhase 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. |
Who may qualify
- Ages
- 40 to 75 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- 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.
Key exclusion criteria (2 listed)
- Receiving hormone replacement therapy (HRT) currently or in the preceding 3-year period.
- Pre- or peri-menopausal women
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Individualized Targeted SleepThe 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. | Behavioural | Phase 2 |
Primary outcome
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.
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.
Phase 2: FBF Response to Acetylcholine (ACh)
Time frame: FBF response to ACh will be measured during Phase 2 at the participants visit 9 which is ~11 weeks from their respective start date
FBF to ACh will be measured following the participants 8 week sleep intervention.
Phase 1: Forearm Blood Flow (FBF) Response to Sodium Nitroprusside (NTP)
Time frame: FBF response to NTP will be measured during Phase 1 at the participants visit 3 which is ~3 weeks from their respective start date.
Phase 2: Forearm Blood Flow (FBF) Response to Sodium Nitroprusside (NTP)
Time frame: FBF response to NTP will be measured during Phase 2 at the participants visit 9 which is ~11 weeks from their respective start date
FBF to NTP will me measured following the participants 8 week sleep intervention
Phase 1: Endothelial Tissue Type Plasminogen Activator (t-PA) Release in Response to Bradykinin (BDK)
Time frame: t-PA release will be measured during Phase 1 at the participants visit 3 which is ~3 weeks from their respective start date.
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.
Phase 2: Endothelial t-PA Release in Response to Bradykinin (BDK)
Time frame: t-PA release will be measured during Phase 2 at the participants visit 9 which is ~11 weeks from their respective start date
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.
Phase 1: FBF Response to ACh+Ng-monomethyl-L-arginine (L-NMMA)
Time frame: 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.
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.
Phase 1: FBF Response to ACh+Vitamin C
Time frame: 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.
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.
Phase 2: FBF Response to ACh+L-NMMA
Time frame: 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
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.
Phase 2: FBF Response to ACh+Vitamin C
Time frame: 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
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.
1 secondary outcome
Nightly Sleep Duration
Time frame: Baseline
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 23 Jan 2025.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Christopher DeSouza, PhD principal investigator
University of Colorado, Boulder
1 site in 1 country: see every site and its status.
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.