The effects of TGF-β1 and IFN-α2b on decorin, decorin isoforms and type I collagen in hypertrophic scar dermal fibroblasts.

Hypertrophic scars (HTS) develop from an excessive synthesis of structural proteins like collagen and a decreased expression of proteoglycans such as decorin. Previous research has demonstrated that decorin expression is significantly down-regulated in HTS, deep dermal tissue, and thermally injured tissue, reducing its ability to regulate pro-fibrotic transforming growth factor-beta 1 (TGF-β1) and normal fibrillogenesis. However, treatment of HTS fibroblasts with interferon-alpha 2b (IFN-α2b) has been shown to reduce excessive collagen synthesis and improve HTS by reducing serum TGF-β1 levels.

Free Tissue Transfer in the Reconstruction of Neck Contractures after Burn Injury: A Case Series.

: Recent advances in burn care have significantly improved the survival rate of patients with extensive burn injuries, placing greater emphasis on reconstruction to improve the long-term outcomes of scar deformities. Anterior and lateral neck contractures are common after burn injuries; they limit range of motion, complicate airway management and create significant cosmetic deformities. Traditional methods have been used to release contractures and improve function.

Novel Application of a Surgeon-Operated Clysis Delivery System in Burn Surgery.

Insufflation of epinephrine-containing solutions (clysis) has shown to decrease blood loss in burn surgery. Current delivery methods are associated with significant cost and may predispose burn patients to hypothermia. This was a proof-of-concept study to evaluate a novel surgeon-operated clysis delivery system.

The Transition to Microsurgical Technique for Hepatic Artery Reconstruction in Pediatric Liver Transplantation.

Background: Hepatic artery thrombosis represents a potentially fatal complication following liver transplantation. Rates of hepatic artery thrombosis are significantly higher in children, with mortality reported up to 80 percent. Microsurgical anastomosis has been shown to decrease the rate of hepatic artery thrombosis and now represents the standard of care at the authors' institution.

Stimulation of toll-like receptor pathways by burn eschar tissue as a possible mechanism for hypertrophic scarring.

Hypertrophic scars (HTS) are a common complication following burn injuries with prolonged inflammation. They do not respond well to current treatment options including mechanical, biomolecular and surgical therapies. Toll-like receptor (TLR) 2 and 4 respond to microbes and damaged endogenous ligands to trigger pro-inflammatory pathways, and they are expressed more in HTS fibroblasts compared to normal skin fibroblasts.

Biological Principles of Scar and Contracture.

Hypertrophic scar and contracture in burn patients is a complex process. Contributing factors include critical injury depth and activation of key cell subpopulations, including deep dermal fibroblasts, myofibroblasts, fibrocytes, and T-helper cells, which cause scarring rather than regeneration. These cells influence each other via cellular profibrotic and antifibrotic signals, which help to determine the outcome.

Serum Decorin, Interleukin-1β, and Transforming Growth Factor-β Predict Hypertrophic Scarring Postburn.

Hypertrophic scar after burn injury is a significant problem. Previous studies have examined the roles for decorin, interleukin-1β, and transforming growth factor-β1 in hypertrophic scar formation locally, but few have considered their systemic influence. The authors conducted a pilot study to examine whether serum levels of these molecules could predict hypertrophic scar formation.