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Heart FailureNCT02997462

Monocyte Phenotypic Changes in Heart Failure

An observational study of Heart Failure and Decompensated Heart Failure, run by University of Michigan 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

There are many treatments that can improve how long and how well people live with heart failure when they are outside the hospital. However, the investigators know less about how to effectively treat hospitalized heart failure patients so that they do not have to return to the hospital after they go home. Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
Conditions the study is for
Heart Failure, Decompensated Heart Failure
How many people
60 participants
Where
1 siteUnited States
Study dates
Nov 2011to 23 Jun 2022
Phase
Observational
Are there results?
None posted in the registry

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 18 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Study population: Heart failure inpatients and age-matched controls

Who may be able to join

  • 18 years of age or older
  • Patients must be diagnosed with heart failure
  • Patients must be hospitalized at the University of Michigan Hospital for treatment of heart failure symptoms.
  • Must be greater than or equal to 65 years of age

Who cannot join

  • Heart attack or other active problem with coronary artery disease
  • Severe kidney failure or need for dialysis
  • An active infection or inflammatory condition
  • A need for treatment that affects the immune system (e.g. systemic steroids, immunomodulatory therapies)
  • A planned surgery during this hospital admission, including heart transplant or other heart surgery
  • Diabetes
Show all 13Show fewer
  • High blood pressure
  • Active cancer
  • Heart disease
  • Lung disease
  • Liver disease
  • Kidney disease
  • Active smoker

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of Michigan Health System

    Ann Arbor, Michigan, 48109

Other trials in United States

About this study

There are many treatments that can improve how long and how well people live with heart failure when they are outside the hospital. However, the investigators know less about how to effectively treat hospitalized heart failure patients so that they do not have to return to the hospital after they go home. Part of the problem is that the investigators don't understand all of the causes of worsening heart failure.

Previous studies by other researchers suggest that white blood cells called monocytes are over-active in heart failure. Under normal conditions monocytes help fight infections in the body, but over-active monocytes release chemicals that could cause abnormal function of the heart and blood vessels. The investigators' research group believes that over-active monocytes may be an important reason that heart failure worsens before hospitalization.

In this study the investigators will collect blood samples on the day a patient comes into the hospital, the day they return home, and the day they come back to the clinic for a follow-up appointment. The investigators will measure the inflammation in the bloodstream and the activity of monocytes from the patients' blood to see if there are changes in these measurements as heart failure improves. The investigators will also call each patient several times after they return home to ask questions about how they are doing.

Read the detailed description

With over 5 million Americans having heart failure (HF) today and an incidence approaching 10 per 1000 population among persons over the age of 65, HF is a major source or morbidity and mortality and a significant public health concern facing developed nations. In the US, decompensated heart failure is the most common reason for hospital admission among persons older than 65. Yet despite significant advances in the treatment of chronic heart failure, currently there are very few evidence-based strategies to treat acutely decompensated heart failure. The incidence of heart failure will likely continue to rise with the increasing prevalence of HF risk factors (advanced age, hypertension, obesity, diabetes, and other metabolic diseases). Accordingly, substantial efforts are underway to identify and treat populations at risk and to understand the molecular drivers of this heterogeneous disease.

The investigators understanding of the pathophysiology of heart failure has evolved from a 'cardiocentric' view focused on mechanical dysfunction to a more global view. Heart failure is now understood as a complex blend of structural, functional, and neurohormonal abnormalities manifested both locally and systemically. More recently, several groups have demonstrated abnormalities in the inflammatory cascade associated with both the initiation and the progression of heart failure. The innate immune system appears to modulate the inflammatory component of HF through several mechanisms including the production of inflammatory cytokines (tumor necrosis factor-α,TNFα; interleukin-6, IL6), reactive oxygen species, activation of the complement system, as well as through functional modification of endothelial cells and myeloid cell trafficking.

Monocytes and macrophages are two of the key myeloid mediators of acute and chronic inflammatory responses. Myeloid dysregulation has been implicated in the pathogenesis of diverse diseases including diabetes, tumor metastasis, pulmonary fibrosis, myocardial infarction, and atherosclerosis. Accumulating evidence suggests that myeloid subsets have distinct functional properties reflecting their polarization patterns and their interaction with the local microenvironment. As a framework to study their role in models of clinical diseases, myeloid populations have been broadly categorized as "inflammatory" and "anti-inflammatory" based on specific surface markers, cytokine potential, and other functional properties.

Although the role of myeloid populations in inflammatory disease is now appreciated, the molecular mechanisms linking these cells to clinical heart failure syndromes remain largely unknown. The investigators hypothesize that distinct myeloid subsets drive different phases of acute and chronic heart failure syndromes, and that identification of these subsets and their functional properties will provide further insight into the pathophysiology of clinical heart failure.

In order to initially characterize the roles that monocytes play across the spectrum of heart failure, the investigators will obtain whole-blood samples from acutely decompensated patients on the date of hospitalization, the date of transfer from the intensive care unit (ICU) to the general-care telemetry floor (if relevant), the date of hospital discharge, and at their first outpatient follow-up visit. Subjects will be recruited from the University of Michigan inpatient heart failure service, which admits approximately 75 patients for decompensated heart failure each month. Once the samples are obtained, the investigators will perform flow cytometry to characterize monocyte subsets and their flux in response to treatment. The investigators will also look at the production of reactive oxygen species by monocytes and will examine how cytokines and chemokines skew monocyte population subsets and their gene expression profiles. The investigators will also investigate the energetic state and flux (aerobic vs. anaerobic metabolic status) of the monocytes.

Keywords
Monocyte, Oxidative Stress, Endothelial Function, Congestive Heart Failure
Medical subject headings
Heart Failure

What participants receive

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

Study groups in NCT02997462
Study groupRoleWhat they receive
Heart FailureHeart Failure patients admitted to the ICU or Heart Failure Service. No changes in service-directed plan of care for patients.
Healthy ControlHealthy, age-matched controls.

What is being measured

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

  1. Change in IL-6 between hospital admission and discharge

    Cytokine

    Measured: All scheduled blood draws - hospital admission, discharge (3-14 days after admission), and first post-discharge appointment (5-10 days following discharge)

Secondary outcomes (7)
  1. Lys6c Hi and Lo, Mannose Receptor

    Cell Surface Markers

    Measured: All scheduled blood draws - hospital admission, discharge (3-14 days after admission), and first post-discharge appointment (5-10 days following discharge)

  2. IL-10, IL-13

    Cytokine

    Measured: All scheduled blood draws - hospital admission, discharge (3-14 days after admission), and first post-discharge appointment (5-10 days following discharge)

  3. Gene Expression (iNOS, CCL2, Ym1, Fizz, VEGF, MMP2/9)

    Monocyte gene expression

    Measured: All scheduled blood draws - hospital admission, discharge (3-14 days after admission), and first post-discharge appointment (5-10 days following discharge)

  4. microRNA

    miR155, let7, mir-33a

    Measured: All scheduled blood draws - hospital admission, discharge (3-14 days after admission), and first post-discharge appointment (5-10 days following discharge)

  5. Monocyte/macrophage morphology

    Macrophages/monocytes will be classified based on their morphology

    Measured: All scheduled blood draws - hospital admission, discharge (3-14 days after admission), and first post-discharge appointment (5-10 days following discharge)

  6. Serum F-2 Isoprostanes

    Oxidative stress marker

    Measured: All scheduled blood draws - hospital admission, discharge (3-14 days after admission), and first post-discharge appointment (5-10 days following discharge)

  7. TNF-alpha

    Marker of inflammation

    Measured: All scheduled blood draws - hospital admission, discharge (3-14 days after admission), and first post-discharge appointment (5-10 days following discharge)

Timeline

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

  1. First posted20 Dec 2016 (estimated)
  2. Study startNov 2011
  3. Primary completion23 Jun 2022
  4. Study completion23 Jun 2022

Resources

More details

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

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
60 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02997462
Sponsor's protocol ID
HUM00049322
Status last verified
May 2024
First submitted
19 Mar 2012
Last updated
8 May 2024
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Seidler S, Zimmermann HW, Bartneck M, Trautwein C, Tacke F. Age-dependent alterations of monocyte subsets and monocyte-related chemokine pathways in healthy adults. BMC Immunol. 2010 Jun 21;11:30. doi: 10.1186/1471-2172-11-30.

    PubMed 20565954
  • Polidori MC, Pratico D, Savino K, Rokach J, Stahl W, Mecocci P. Increased F2 isoprostane plasma levels in patients with congestive heart failure are correlated with antioxidant status and disease severity. J Card Fail. 2004 Aug;10(4):334-8. doi: 10.1016/j.cardfail.2003.11.004.

    PubMed 15309701
  • Colombo PC, Banchs JE, Celaj S, Talreja A, Lachmann J, Malla S, DuBois NB, Ashton AW, Latif F, Jorde UP, Ware JA, LeJemtel TH. Endothelial cell activation in patients with decompensated heart failure. Circulation. 2005 Jan 4;111(1):58-62. doi: 10.1161/01.CIR.0000151611.89232.3B. Epub 2004 Dec 20.

    PubMed 15611373
  • Levine B, Kalman J, Mayer L, Fillit HM, Packer M. Elevated circulating levels of tumor necrosis factor in severe chronic heart failure. N Engl J Med. 1990 Jul 26;323(4):236-41. doi: 10.1056/NEJM199007263230405.

    PubMed 2195340
  • Deswal A, Petersen NJ, Feldman AM, Young JB, White BG, Mann DL. Cytokines and cytokine receptors in advanced heart failure: an analysis of the cytokine database from the Vesnarinone trial (VEST). Circulation. 2001 Apr 24;103(16):2055-9. doi: 10.1161/01.cir.103.16.2055.

    PubMed 11319194
  • Mann DL, McMurray JJ, Packer M, Swedberg K, Borer JS, Colucci WS, Djian J, Drexler H, Feldman A, Kober L, Krum H, Liu P, Nieminen M, Tavazzi L, van Veldhuisen DJ, Waldenstrom A, Warren M, Westheim A, Zannad F, Fleming T. Targeted anticytokine therapy in patients with chronic heart failure: results of the Randomized Etanercept Worldwide Evaluation (RENEWAL). Circulation. 2004 Apr 6;109(13):1594-602. doi: 10.1161/01.CIR.0000124490.27666.B2. Epub 2004 Mar 15.

    PubMed 15023878
  • Aukrust P, Ueland T, Lien E, Bendtzen K, Muller F, Andreassen AK, Nordoy I, Aass H, Espevik T, Simonsen S, Froland SS, Gullestad L. Cytokine network in congestive heart failure secondary to ischemic or idiopathic dilated cardiomyopathy. Am J Cardiol. 1999 Feb 1;83(3):376-82. doi: 10.1016/s0002-9149(98)00872-8.

    PubMed 10072227

Questions about this trial

What is this clinical trial studying?

An observational study of Heart Failure and Decompensated Heart Failure, run by University of Michigan 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 4 inclusion and 13 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 8 May 2024. 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?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Change in IL-6 between hospital admission and discharge (time frame: All scheduled blood draws - hospital admission, discharge (3-14 days after admission), and first post-discharge appointment (5-10 days following discharge)). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02997462, which also lists 7 linked publications.

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 8 May 2024; AzTrials last refreshed its copy on 28 Oct 2026.

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