HOME >> BIOLOGY >> NEWS
Evidence suggests food preservatives may help prevent cavities

ter researcher Basil Bibby suggested that fluoride inhibits the bacteria that feed on sugars and secrete the acid that eats through tooth enamel and causes cavities. But many other researchers discarded that hypothesis, instead relying on evidence that fluoride allows teeth to remineralize, helping to fill in small cavities a little bit like a road crew fills in potholes, before they grow even bigger.

Now, Marquis and others have vindicated Bibby by showing that fluoride does affect bacteria directly. In his laboratory, Marquis has shown that fluoride and food preservatives knock out bacteria by pushing them to exhaustion. Though bacteria like streptococcus mutans thrive in the high-acid environment that they create along the surface of teeth and in dental plaque, the bacteria must maintain a lower acidity level within themselves. But fluoride and food preservatives make this difficult. Both take molecular actions that lower the pH within bacteria by continually bringing protons into the cells. Bacteria pump these protons back out, but like an athlete who continually must toss a heavy medicine ball over a fence, the cell soon uses up all its energy pumping the protons back out. Without energy, the cell shuts down and stops producing acid.

"The acid from these bacteria is what causes enamel to dissolve," says Marquis, professor of microbiology and immunology. "Fluoride and preservatives like benzoate prevent the bacteria from acidifying the plaque and causing cavities. The bacteria are still there -- you have to take a tooth brush to get rid of them -- but they're not causing damage."

In his laboratory, Marquis has also shown that the common medicine ibuprofen, a non-steroidal anti-inflammatory drug (NSAID), also acts like fluoride and food preservatives in the way it inhibits bacteria. Again picking up on that basic research, Bowen's team has just published results showing that ibuprofen also enhances fluoride's action, dramati
'"/>

Contact: Tom Rickey
trickey@admin.rochester.edu
716-275-7954
University of Rochester
7-Apr-2000


Page: 1 2 3 4

Related biology news :

1. Evidence builds for potential new cancer drug target
2. Evidence for sympatric speciation by host shift in the sea
3. Evidence for the impact of climate change on deep-sea biodiversity
4. Evidence for fat hormone target in brain
5. Evidence of nanobacterial-like structures found in human calcified arteries and cardiac valves
6. Evidence shows the heart has stem cells able to regenerate muscle tissue lost to disease, wear
7. Evidence for orangutan culture
8. Evidence suggests that standard smallpox vaccine offers long-term immunity
9. Evidence that adults stem cells differentiate like embryonic stem cells published in Nature
10. When Shewanella meets goethite: Evidence found of recognition between animate and inanimate objects
11. Evidence links protein damage to Parkinsons

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Evidence suggests food preservatives may help prevent cavities

(Date:4/22/2014)... Consortium Ltd.,s nanotechnology expert will present a poster ... at the 7th International Nanotoxicology Congress to ... , Dr. Monita Sharma will outline a strategy consistent ... of Sciences, " Toxicity Testing in the 21st Century: ... of non-animal methods involving human cells and cell lines ...
(Date:4/22/2014)... presented Beaumont Health System with prestigious, competitive research ... athletic and nonathletic injuries. , The American ... grant to fund stem cell-based research that could ... ruptured knee anterior cruciate ligament, or ACL. According ... cruciate ligament injury is the over-stretching or tearing ...
(Date:4/22/2014)... at the University of Kentucky has discovered new methods ... , The research, led by Peixuan Guo, professor ... the UK College of Pharmacy and Markey Cancer Center, ... Boiling-Resistant Anionic Polymer Material To Build Robust Structures with ... and Daniel L. Jasinski. , The article, which will ...
Breaking Biology News(10 mins):Beaumont awarded grants to study sports-related injury treatment, improve recovery 2RNA shows potential as boiling-resistant anionic polymer material for nanoarchitectures 2
(Date:1/14/2014)... As pet owners drew up their lists of New Year,s resolutions ... care of my furry companion." Nowadays there are pet salons, dog ... to take the little canine or feline darlings along wherever mommy ... some pricey toys at the pet store. But anyone who has ...
(Date:1/14/2014)... BETHESDA, Md. , Jan. 14, 2014 ... two institutes from the National Institutes of Health (NIH) ... safer, more effective treatments to patients on a faster ... Advancing Translational Sciences (NCATS) and the National Eye Institute ...
(Date:1/14/2014)... 2014  RXi Pharmaceuticals Corporation (OTCQX: RXII), a biotechnology ... therapies addressing major unmet medical needs using RNA-targeted ... of Allowance from the United States Patent and ... (sd-rxRNA®), for the treatment of fibrosis. The patent ...
(Date:1/14/2014)... 13, 2014 Bob Hainsey, a semiconductor ... 20 years in the industry, has joined SPIE, ... will serve as the society’s Science and Technology Strategist. ... SPIE as our Technology Strategist, further strengthening the technical ...
Breaking Biology Technology:New Year's Resolution: Give Pets the Gift of Top-Notch Health Care 2Organovo Announces Collaboration with National Institutes of Health 2Organovo Announces Collaboration with National Institutes of Health 3RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 3Photonics R&D Leader Bob Hainsey Joins SPIE Technical Staff 2
Cached News: