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Is obesity an oral bacterial disease?
July 09, 2009New research published in the June issue of the Journal of Dental Research suggests that oral bacteria may contribute to the development of obesity.
Alexandria, Va. - The world-wide explosion of overweight people has been called an epidemic. The inflammatory nature of obesity is widely recognized. Could it really be an epidemic involving an infectious agent? In this climate of concern over the increasing prevalence of overweight conditions in our society, investigators have focused on the possible role of oral bacteria as a potential direct contributor to obesity.
To investigate this possibility, the study's researchers J.M. Goodson, D. Groppo, S. Halem and E. Carpino measured salivary bacterial populations of overweight women. Saliva was collected from 313 women with a body mass index between 27 and 32, and bacterial populations were measured by DNA probe analysis. Levels in this group were compared with data from a population of 232 healthy individuals from periodontal disease studies. The median percentage difference of seven of the 40 bacterial species measured was greater than 2 percent in the saliva of overweight women. Classification tree analysis of salivary microbiological composition revealed that 98.4 percent of the overweight women could be identified by the presence of a single bacterial species (Selenomonas noxia) at levels greater than 1.05 percent of the total salivary bacteria. Analysis of these data suggests that the composition of salivary bacteria changes in overweight women.
It seems likely that these bacterial species could serve as biological indicators of a developing overweight condition. Of even greater interest, and the subject of future research, is the possibility that oral bacteria may participate in the pathology that leads to obesity.
International & American Association for Dental Research
It seems likely that these bacterial species could serve as biological indicators of a developing overweight condition. Of even greater interest, and the subject of future research, is the possibility that oral bacteria may participate in the pathology that leads to obesity.
International & American Association for Dental Research
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Yiping Han, a researcher from Department of Periodontics at Case Western Reserve University School of Dental Medicine, reports the first documented link between a mother with pregnancy-associated gum disease to the death of her fetus.
Added sugar in raisin cereals increases acidity of dental plaque
Elevated dental plaque acid is a risk factor that contributes to cavities in children. But eating bran flakes with raisins containing no added sugar does not promote more acid in dental plaque than bran flakes alone, according to new research at the University of Illinois at Chicago.
Forsyth scientists suggest linkages between obesity and oral bacterial infection
A scientific team from The Forsyth Institute has discovered new links between certain oral bacteria and obesity.
Komodo even more deadly than thought: Research
The carnivorous reptiles (Varanus komodoensis) are known to bite prey and release them, leaving them to bleed to death from their wounds: the victims are reported to go into shock before the dragons kill and eat them.
OHSU School of Dentistry finds some orthodontic appliances are more prone to bacteria
Researchers at the Oregon Health & Science University School of Dentistry (www.ohsu.edu/sod) have found the majority of patients with self-ligating orthodontic brackets retain fewer bacteria in plaque than patients with elastomeric orthodontic brackets.
The More Oral Bacteria, the Higher the Risk of Heart Attack, UB study shows.
Several studies have suggested there is a connection between organisms that cause gum disease, known scientifically as periodontal disease, and the development of heart disease, but few studies have tested this theory.
Uncultured bacteria found in amniotic fluids of women who experience preterm births
Researchers from Case Western Reserve University and Yale University have made a significant advancement in understanding the cause behind why some pregnant women suffer from inflammations in the inner womb without any signs of an infection.
Bleeding gums linked to heart disease
Bad teeth, bleeding gums and poor dental hygiene can end up causing heart disease, scientists heard today (Thursday 11 September 2008) at the Society for General Microbiology's Autumn meeting being held this week at Trinity College, Dublin.
New bacterial species found in human mouth
Scientists have discovered a new species of bacteria in the mouth. The finding could help scientists to understand tooth decay and gum disease and may lead to better treatments, according to research published in the August issue of the International Journal of Systematic and Evolutionary Microbiology.
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