A Nonlethal Full-Thickness Flame Burn Produces a Seroma Beneath the Forming Eschar, Thereby Promoting Pseudomonas aeruginosa Sepsis in Mice
| Autor: | Alan S. Cross, Adrienne R Kambouris, Kerri Lopez, Jessica C Allen, Gideon Wolf, Scott M Baliban, Jerod Brammer, Raphael Simon, Myeongjin Choi, Gary Fiskum, Wei Chao, Nevil J. Singh, Catriona Miller |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Chemokine
Soft Tissue Injuries Secondary infection Eschar medicine.disease_cause Proinflammatory cytokine Sepsis Mice Immune system Animals Humans Medicine Pseudomonas Infections biology business.industry Pseudomonas aeruginosa Rehabilitation medicine.disease Disease Models Animal Seroma Immunology Emergency Medicine biology.protein Surgery medicine.symptom Burns business |
| Zdroj: | Journal of Burn Care & Research. 43:792-801 |
| ISSN: | 1559-0488 1559-047X |
| DOI: | 10.1093/jbcr/irab195 |
| Popis: | The World Health Organization estimates ~180,000 deaths occur annually from burn-related injuries. Many victims who survive the initial burn trauma succumb to bacterial infections that lead to sepsis during treatment. Although advancements in burn care continue to improve in high-income countries due to their burn centers and advanced research, low and middle-income countries continue to see high frequencies of burn injuries and burn-related deaths due to secondary infections. Bacterial-derived sepsis is the most life-threatening danger for people that survive burn injuries. Here we provide evidence for the first time that a subeschar seroma forms postburn even in the absence of infection in mice. The seroma fills with a volume estimated at 500 µL of fluid, 25% of the blood supply, free of red blood cells. The seroma fluid supports robust Pseudomonas aeruginosa (PA) growth and contains inflammatory cytokines and chemokines, which recruit immature neutrophils and monocytes to the seroma in the absence of endothelial breakdown. These immune cells fail to contain PA expansion and dissemination. This recruitment of monocytes and immature neutrophils may result in sequestering these critical immune cells away from other tissues during a pivotal time during bacterial dissemination, promoting PA-mediated sepsis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|