This clinical trial prospectively evaluates the potential beneficial effects of antimicrobial drug delivery from a synthetic dressing (Hydron-AgSD) formed on second-degree burn wounds. A paste composed of polyethylene glycol-400, poly 2-OH ethylmethacrylate, and silver sulfadiazine (AgSD 1%-3%) matured within one hour to form a solid dressing. In 27 patients, comparable areas of second-degree wounds on the same patient were selected at random for test and control (silver sulfadiazine 1% only) sites. The mean total time of the synthetic dressing application per patient was about nine days, and each dressing remained in place for nearly four days. During this interval the control sites required four dressings changes. In 17 tests for infections, the control areas were contaminated but no bacteria were detected under the synthetic dressing; in three tests, the controls had no bacteria, whereas the synthetic dressing did. Healing of burns was similar under both types of dressing. Benefits of Hydron treatment included increased patient comfort because of the reduced number of dressing changes and, in some cases, greater freedom from contaminating bacteria.

Adolescent↗

PubMedDate not supplied

A new model for studying the development of human hypertrophic burn scar formation.

Hypertrophic scar formation remains the major problem for severely burned patients who survive their injuries. This scarring can result in both cosmetic and functional deformities. One of the major problems in dealing with this complication is the lack of an adequate animal model with which to test various possible therapeutic modalities. We describe an animal model that uses human skin applied to the backs of nude mice to investigate the problem. Immunosuppression is not necessary in this model since the nude mouse lacks a thymus gland and is therefore not able to reject the skin. With this model we have been able to achieve contracture of meshed normal human skin grafts and hypertrophic scar formation in normal human skin that was burned a month after grafting to the mouse. We have also had success in grafting human hypertrophic scars, obtained from burn patients, to the mice. This model offers unique opportunities for investigation of the cause and treatment of burn scars in humans.

Animals↗

PubMedDate not supplied

Business computers for dentists.

Explore the source record for details and available documents.

Computers↗

PubMedDate not supplied

The correlation of kidney transplant survival with lymphocyte mediated cytotoxicity on B cell targets.

A LMC micromethod using specific B lymphocyte target cells labeled with a fluorescent dye has been developed to select matched donors and recipients for kidney allotransplantation. The fluorescence of the B lymphocyte target cells was 85% or less of control levels in 9 of 28 patients. In 8 of these 9 hosts graft loss occurred. Nineteen sets of target cells showed 90-95% of control fluorescence. Only 5 of these recipients lost their transplants (p less than 0.01). The fluorescent LMC test correlates with successful renal transplant outcome when the target cells are purified B cells.

Antigen-Antibody Reactions↗