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P- and E-selectin blockade can control bacterial translocation and modulate systemic inflammatory response.
Francisco J García-Criado1, Francisco S Lozano, Marcello B Barros
1Department of Surgery, Clinic Hospital and University of Salamanca, Salamanca, Spain. marcellobb@bol.com.br
Summary
GM 1998-016, a novel compound, effectively reduced bacterial translocation in rats by inhibiting inflammatory responses and leukocyte-endothelium interactions. This finding suggests a potential therapeutic strategy for managing sepsis and multi-organ failure.
Area of Science:
- Immunology
- Microbiology
- Pharmacology
Background:
- Bacterial translocation contributes to sepsis and organ failure.
- Selectins mediate leukocyte-endothelium interactions crucial in inflammation.
- Targeting selectins may modulate inflammatory responses and bacterial translocation.
Purpose of the Study:
- To evaluate the efficacy of GM 1998-016, a Sialyl-Lewis(X) derivative, in modulating bacterial translocation.
- To investigate the compound's impact on systemic inflammation and leukocyte-endothelium interactions.
- To assess the protective effects of GM 1998-016 in an in vivo model.
Main Methods:
- Wistar rats were administered Zymosan A and treated with varying doses of GM 1998-016.
- Bacterial translocation (local and systemic) was quantified.
- Neutrophil infiltration, oxidative stress markers, and cytokine levels were measured.
Main Results:
- GM 1998-016 significantly decreased bacterial translocation (p < .05).
- The compound reduced neutrophil infiltration (p < .001), free radical production (p < .01), and pro-inflammatory cytokines (p < .01).
- GM 1998-016 effectively downregulated systemic inflammation and leukocyte-endothelium interactions.
Conclusions:
- GM 1998-016 demonstrates significant protective effects against bacterial translocation in an experimental model.
- The compound acts by downregulating inflammatory responses and leukocyte-endothelium interactions.
- GM 1998-016 shows promise as a therapeutic agent for conditions involving bacterial translocation and inflammation.