Pathophysiology of Chronic Wounds

This study will compare blood from healthy volunteers and with wound fluid and tissue samples from patients with acute and chronic wounds enrolled in other NIH studies. Chronic wounds, such as venous leg ulcers, pressure sores, ischemic ulcers and diabetic foot ulcers, affect more than 4 million Americans each year and cost about $9 billion to treat. The nature of these wounds is not well understood and treatments are not always successful, for unknown reasons. Blood collected from healthy volunteers will be used to prepare a model for studying various processes involved in wound healing.

Normal healthy volunteers 21 years of age and older who do not smoke and have no medical problems of the heart, bones, muscles, stomach, lungs, blood, or nervous system, do not have problems going to the bathroom, and have no infections may be eligible for this study.

Participants will be interviewed briefly for information on their date of birth, gender, ethnic identity and medical history and will have a brief physical examination, including a check of height and weight, vital signs and heart and lung sounds. About 14 milliliters (2 tablespoons) of blood will be drawn from the arm.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Healthy Cicatrix Fibrosis Pathologic Processes Pathological Conditions, Signs and Symptoms Skin Diseases Skin Ulcer Skin and Connective Tissue Diseases Tissue Adhesions

Sex eligibility

All sexes

Study type

Observational

Primary location

National Institute of Dental And Craniofacial Research (NIDCR)

Bethesda, Maryland, 20892, United States

About this study

Chronic wounds are "any interruption on the continuity of the body's tissue that requires a prolonged time to heal, does not heal, or recurs" (Wysocki, 1996). Venous leg ulcers, pressure sores, ischemic ulcers, and diabetic foot ulcers are examples of chronic wounds. These kinds of wounds affect over 4 million Americans each year and cost over $9 billion to treat. The pathophysiology of these wounds is not well understood and therapies directed at healing these wounds are not always successful for unknown reasons. To better understand the pathophysiology of these wounds we propose to collect blood by venipuncture from healthy volunteers. Blood will be used to prepare blood and plasma derived serum for use in an in vitro wound healing model and Boyden chamber assays to study cell migration, adhesion, genetic expression, expression of cell surface receptors, and protein expression to construct a profile of various healing processes. This baseline data will be used for studying the effect of acute and chronic wound fluids on cell migration, adhesion, genetic expression, expression of cell surface receptor and protein expression in an in vitro wound model (protocols to be submitted for each patient population).

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Healthy volunteers, 21 years of age and older.

Male or female.

Exclusion criteria

Volunteers with known neurological, cardiac, endocrine, skeletal, gastrointestinal, immunological, neoplastic, pulmonary, urologic, hematologic, or infectious disease.

Volunteers taking medications to treat a known diagnosed illness.

Smoker.

Children will not be used because chronic wounds are rarely seen in this population.

Sponsors and collaborators

Lead sponsor

National Institute of Dental and Craniofacial Research (NIDCR)

Nih

Registry information

Official study title

Pathophysiology of Chronic Wounds: Collection of Blood From Healthy Volunteers

Important dates

Study start: 2000
Study completion: 2002
First posted: Nov 6, 2000
Registry last updated: Mar 4, 2008

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed