Adult Stem Cell Response to Burn Injury

Status Withdrawn

Clinical Trial Summary

This study is designed to determine the response of adult stems cells, also referred to as mesenchymal stem cells (MSCs), to tissue injury resulting from thermal burns. The study will consist of a one time collection of a patient's blood, about one teaspoon, on the third day following the initial burn. MSCs in the blood will then be quantitated and identified using according to unique proteins found on their cell surface using flow cytometry. The results of flow cytometry analysis will then be compared to the patients characteristics (age, sex, race, etc.), their past medical history (hx of diabetes, hypertension, heart disease, etc.) and to the patient outcome (length of hospital stay, mortality, etc.).

Clinical Trial Description

Traumatic and non-traumatic disease processes result in varying tissue injury that can culminate in organ failure and death. Current literature has demonstrated that adult stem cells (ASCs) are mobilized into peripheral circulation as a heterogeneous population of cells following tissue injury. The significance of this heterogeneity has not yet been defined. Other studies have shown ASCs augment tissue repair under appropriate conditions. This proposal will begin to elucidate the mechanism of ASC activation, mobilization and localization to sites of injury. This study will use flow cytometry to identify subsets of ASCs mobilized in response to tissue injury and compare this response to the patient's demographics, comorbidities, in hospital morbidities, and mortality. Patients with thermal burns will be used as a model of tissue injury given the quantity of tissue injured and the robust signal generated from this injury. ASCs are currently being investigated as adjuncts to tissue repair involving a host of tissues, including cardiac, neural, and renal. The identification of a specific subset of ASCs selectively mobilized in response to tissue injury would alter all studies involving ASCs in tissue repair and necessitate the identification and targeting of subsets selectively mobilized in response to injury to each particular tissue. ;

Study Design

Observational Model: Case Control, Time Perspective: Prospective

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00609661
Study type	Observational
Source	Ohio State University
Contact
Status	Withdrawn
Phase	N/A
Start date	February 2008
Completion date	June 2010

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.