Porphyromonas gingivalis neutrophil manipulation: risk factor for periodontitis?

Richard P Darveau1

  • 1Department of Periodontics, School of Dentistry, University of Washington, Seattle, WA 98195, USA.

Insights

Porphyromonas gingivalis manipulates host neutrophil responses to foster a dysbiotic bacterial community. This study reveals a key mechanism driving microbial dysbiosis in host-associated environments.

Area of Science:

  • Microbiology
  • Immunology
  • Host-Microbe Interactions

Background:

  • Dysbiosis in host-associated bacterial communities complicates understanding individual microbial roles.
  • Porphyromonas gingivalis is implicated in various dysbiotic conditions.

Purpose of the Study:

  • To elucidate the mechanisms by which Porphyromonas gingivalis contributes to dysbiotic communities.
  • To investigate the manipulation of host immune responses by Porphyromonas gingivalis.

Main Methods:

  • Analysis of bacterial manipulation of host neutrophil responses.
  • Investigating the role of Porphyromonas gingivalis in community dysbiosis.

Main Results:

  • Porphyromonas gingivalis actively manipulates host neutrophil functions.
  • This manipulation facilitates the establishment and maintenance of a dysbiotic bacterial community.

Conclusions:

  • Bacterial manipulation of host immunity is a significant factor in dysbiosis.
  • Porphyromonas gingivalis employs specific strategies to promote dysbiosis, impacting host health.

Related Concept Videos

The Oral Microbiota01:27

The Oral Microbiota

The oral microbiome includes a complex ecosystem comprising over 700 microbial species, identified through genomic sequencing and culture-based analyses to date. This community includes a core microbiome, found universally among individuals, and a variable component influenced by environmental factors such as diet, lifestyle, and host genetics. Site-specific conditions, including oxygen gradients, pH levels, and nutrient availability, determine the spatial distribution of these microorganisms...
87
Development of the Oral Microbiota01:28

Development of the Oral Microbiota

The establishment of the oral microbiome begins before birth, challenging the long-held belief that the fetal oral cavity is sterile. The presence of oral microbes such as Streptococcus and Fusobacterium in amniotic fluid suggests that microbial exposure may occur in utero, potentially through translocation from the maternal oral or gastrointestinal tract. This early colonization primes the neonatal immune system and sets the stage for subsequent microbial succession. Maternal health,...
62
Factors Affecting the Risk of Infection01:26

Factors Affecting the Risk of Infection

The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...
14.1K
Bacterial Phylum Proteobacteria01:26

Bacterial Phylum Proteobacteria

Proteobacteria, one of the largest and most diverse bacterial phyla, encompasses a wide range of Gram-negative bacteria distinguished by their outer membrane composed of lipopolysaccharides. These microorganisms exhibit various metabolic capabilities, including phototrophy, chemolithotrophy, and heterotrophy, and thrive in diverse environments from soil to aquatic systems and host-associated niches. The phylum is divided into six classes: Alphaproteobacteria, Betaproteobacteria,...
1.1K