Abstract
The pathological mechanisms underlying the development of multiple organ dysfunction syndrome (MODS) in critically ill patients remain poorly understood. Nevertheless, the most widely held view is that uncontrolled systemic activation of the inflammatory response somehow leads to cellular dysfunction and/or destruction at locations distant from the initiating site(s) of injury or infection. Complications that occur during sepsis and MODS are ultimately the consequence of an overreaction of host defense mechanisms to bacterial infection. The reaction is the so-called generalized inflammatory response, which is an essential reaction of the host to both burns/trauma and septic episode [1]. When overactivated, the systemic inflammatory response can be against the host in a self-destructive manner. While the initial inflammatory response can be initiated both by extensive burns and sepsis, the perpetuation of the response is usually associated with bacterial component. One of the central principles by which bacteria induce the inflammatory response and subsequent organ dysfunction is via bacterial toxins, of which endotoxin or lipopolysaccharide (LPS) from gram-negative bacteria is the most prominent. Endotoxin, a cell wall component of gram-negative bacteria, is known to activate the cytokine pathways that lead to the release of proinflammatory mediators, which results in a wide range of pathophysiological effects. Recent advances in molecular biology and mostly immunology have greatly contributed to our understanding of the pathophysiology of sepsis not only by endotoxin but also by other microbial products, including exotoxin mainly from gram-positive bacteria [2]. Infections begin when bacteria penetrate host barriers such as the skin and mucosa, sometimes overwhelming host defenses and releasing toxic bacterial products that activate plasma factors (complement and clotting molecules) as well as cells of the immune system. The result is that the host’s inflammatory response contributes substantially to the development of sepsis and MODS secondary to severe burns/trauma.
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Yao, Y. (2015). Bacterial Endotoxin and Exotoxin in Severe Burns. In: Yang, Z. (eds) Chinese Burn Surgery. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-8575-4_5
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DOI: https://doi.org/10.1007/978-94-017-8575-4_5
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