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Published on: June 15, 2019
Gram-negative sepsis: a dilemma of modern medicine
1Department of Internal Medicine, Rush-Presbyterian-St. Luke's Medical Center, Chicago, Illinois 60612.
Abstract:
Gram-negative sepsis is an increasingly common problem, with up to 300,000 cases occurring each year in the United States alone. Despite the ongoing development of new antibiotics, mortality from gram-negative sepsis remains unacceptably high. To stimulate earlier therapeutic intervention by physicians, a new set of broad definitions has been proposed to define the systemic inflammatory response characteristic of sepsis. In this review, the signs and symptoms of this progressive, injurious process are reviewed and its management is discussed, as are the mechanisms by which bacterial endotoxin triggers the biochemical events that lead to such serious complications as shock, adult respiratory distress syndrome, and disseminated intravascular coagulation. These events often occur even when appropriate antimicrobial therapy has been instituted. An increased understanding of the structure of endotoxin and its role in the development of sepsis, together with advances in hybridoma technology, has led to the development of monoclonal antibodies that bind to endotoxin and significantly attenuate its adverse effects. These agents promise to substantially reduce the morbidity and mortality associated with gram-negative sepsis.
Insights
Gram-negative sepsis, a serious condition, has high mortality despite antibiotic use. New monoclonal antibodies targeting endotoxin show promise in reducing sepsis-related deaths and complications.
Area of Science:
- Critical Care Medicine
- Infectious Diseases
- Immunology
Background:
- Gram-negative sepsis affects 300,000 annually in the US, with persistently high mortality rates.
- Existing antibiotic treatments are insufficient to overcome the severity and complications of sepsis.
- Bacterial endotoxin is a key trigger for the systemic inflammatory response and severe complications.
Purpose of the Study:
- To review the signs, symptoms, and management of gram-negative sepsis.
- To discuss the mechanisms of endotoxin-induced complications like shock and ARDS.
- To highlight novel therapeutic strategies targeting endotoxin.
Main Methods:
- Review of current literature on gram-negative sepsis pathogenesis and management.
- Discussion of endotoxin's role in triggering sepsis-related biochemical events.
- Exploration of advances in hybridoma technology for antibody development.
Main Results:
- New broad definitions aim to improve early recognition of sepsis.
- Understanding endotoxin structure and function has advanced.
- Monoclonal antibodies against endotoxin have been developed.
Conclusions:
- Monoclonal antibodies targeting endotoxin demonstrate potential to significantly reduce morbidity and mortality.
- Early therapeutic intervention, guided by new definitions, is crucial.
- Further research into endotoxin-targeted therapies is warranted for gram-negative sepsis.
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