[Pathophysiology and pathogenesis of Salmonella sepsis]

Area of Science:

• Microbiology
• Immunology
• Pathophysiology

Background:

• Salmonellosis is a significant public health concern.
• Sepsis development in salmonellosis involves intricate host-pathogen interactions.
• Understanding these mechanisms is crucial for effective treatment strategies.

Purpose of the Study:

• To review current knowledge on the pathogenesis and pathophysiology of sepsis in salmonellosis.
• To elucidate the complex molecular and cellular mechanisms underlying sepsis development.
• To highlight key bacterial strategies and host responses involved.

Main Methods:

• Literature review of scientific articles and studies on salmonellosis and sepsis.
• Analysis of research on bacterial virulence factors and host immune responses.
• Synthesis of information on molecular pathways, cellular processes, and cytokine involvement.

Main Results:

• Lipopolysaccharide (LPS) triggers NOD-like receptor (NLR) activation, initiating inflammatory cascades.
• Salmonella evades host defenses through mechanisms like escaping lysosomal degradation and forming intracellular replication niches.
• Bacterial factors induce cytoskeleton reorganization, apoptosis, and alter cytokine profiles (e.g., IL-1β, TNF-α).
• Omptin proteases play a role in modulating host responses and disease progression.

Conclusions:

• Sepsis in salmonellosis arises from a complex interplay of bacterial virulence and host immune dysregulation.
• Targeting bacterial evasion strategies and host inflammatory pathways presents potential therapeutic avenues.
• Further research into these mechanisms can inform the development of novel interventions for sepsis management.