The Pathogenic Factors from Oral Streptococci for Systemic Diseases

Area of Science:

• Microbiology
• Oral Health
• Infectious Diseases

Background:

• The oral cavity hosts over 700 microbial species, primarily commensals, forming biofilms.
• Oral Streptococci are dominant oral bacteria, increasingly linked to systemic diseases like endocarditis and inflammation.
• Pathogenic factors secreted by oral Streptococci include extracellular substances, toxins, and vesicles.

Purpose of the Study:

• To review the mechanistic links between oral Streptococci pathogenic factors, inflammation, and systemic diseases.
• To consolidate current understanding of oral biofilm infections and their systemic implications.
• To highlight the need for considering vaccine candidates against Streptococci-caused infectious diseases.

Main Methods:

• Literature review focusing on oral Streptococci, biofilms, and systemic conditions.
• Analysis of pathogenic factors produced by oral Streptococci.
• Examination of the role of inflammation in mediating systemic diseases linked to oral bacteria.

Main Results:

• Oral Streptococci possess pathogenic factors (extracellular polymeric substances, toxins, vesicles) that contribute to disease.
• These factors can trigger inflammation, linking oral biofilm infections to systemic conditions.
• Evidence suggests a connection between oral Streptococci and diseases such as infective endocarditis, brain hemorrhage, and autoimmune disorders.

Conclusions:

• Oral Streptococci are significant pathogens with factors driving systemic diseases.
• Understanding these mechanisms is crucial for developing targeted therapies and preventative strategies.
• Further research into vaccine development against oral Streptococci is warranted.