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Scientists Chip Away at the Mystery of What Lives in Our Mouths

Sequencing of harmless oral bacterium offers insights about its disease-causing relative

COLUMBUS, Ohio – Scientists have pieced together sections of DNA from 12 individual cells to sequence the genome of a bacterium known to live in healthy human mouths.

With this new data about a part of the body considered “biological dark matter,” the researchers were able to reinforce a theory that genes in a closely related bacterium could be culprits in its ability to cause severe gum disease. (more…)

In The Mouth, Smoking Zaps Healthy Bacteria, Welcomes Pathogens

By Guest PostFebruary 20, 2012Healthbacteria, biofilm, bone loss, chad matthews, cytokines, dental plaque, disease, diverse ecosystem, dna signature, ecosystem, gingivitis, good bacteria, harmful bacteria, healthy bacteria, marcelo aspiras, marko de jager, maureen langlois, microbial community, ohio state university, periodontitis, philips oral healthcare, purnimakumar, smokers, smoking, swab, swollen gums, types of cytokines, vinayak joshi

COLUMBUS, Ohio — According to a new study, smoking causes the body to turn against its own helpful bacteria, leaving smokers more vulnerable to disease.

Despite the daily disturbance of brushing and flossing, the mouth of a healthy person contains a stable ecosystem of healthy bacteria. New research shows that the mouth of a smoker is a much more chaotic, diverse ecosystem—and is much more susceptible to invasion by harmful bacteria. (more…)

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Scientists Chip Away at the Mystery of What Lives in Our Mouths

In The Mouth, Smoking Zaps Healthy Bacteria, Welcomes Pathogens