Navigation Links
Tooth Decay Bacteria Evolved Along With Man

A research team from the New York University College of Dentistry has discovered the first conclusive proof that bacteria associated with// oral decay evolved along with its human hosts.

This can even be traced to a single common ancestor who lived in Africa between 100,000 and 200,000 years ago, say the researchers.

The team, led by Page Caufield, a professor of cariology and comprehensive care at NYUCD, discovered that Streptococcus mutans, a bacterium associated with dental caries, has evolved along with its human hosts.

S. mutans is transmitted from mothers to infants, and first appears in an infant’s mouth at about two years of age.

Caufield’s findings are reported in an article in the February issue of the Journal of Bacteriology.

In his analysis of the bacterium, Caufield used DNA fingerprints and other biomarkers that scientists have also employed to trace human evolution back to a single common African ancestor, known as "ancestral Eve."

"As humans migrated around the world and evolved into the different races and ethnicities we know today," Caufield said, "this oral bacterium evolved with them in a simultaneous process called coevolution."

"It is relatively easy to trace the evolution of S. mutans, since it reproduces through simple cell division," says Caufield, who gathered over 600 samples of the bacterium on six continents over the past two decades.

His final analysis focused on over 60 strains of S. mutans collected from Chinese and Japanese; Africans; African-Americans and Hispanics in the United States; Caucasians in the United States, Sweden, and Australia; and Amazon Indians in Brazil and Guyana.

"By tracing the DNA lineages of these strains," Caufield said, "We have constructed an evolutionary family tree with its roots in Africa and its main branch extending to Asia.

A second branch, extending from Asia back to Europe, traces the migration of a small gro up of Asians who founded at least one group of modern-day Caucasians."

Additional branches, tracing the coevolution of humans and bacteria from Asia into North and South America, will be drawn in the next phase of Caufield’s analysis.


Related medicine news :

1. New Tooth Paste Is Here To Fill In Dental Cavities
2. Post-Menopausal Status May Cause Tooth Decay
3. Researchers Discover New Clues To Identify Tooth Decay
4. Colgate To Develop Anti-Cancer Toothpastes And Mouthwashes
5. Nine Major Culprits For Tooth Loss Identified By Researchers
6. Tooth Decay Bacteria Unaffected By Altered Biochemical Pathway
7. Tooth Loss And Heart Disease Exist Side By Side
8. Tooth decay can be prevented by using straw for drinking fizzy drinks
9. Syrupy Medicines Increase the Risk of Tooth Decay
10. Compounds in Licorice Can Fight Tooth Decay
11. Fluoride Varnish prevents Tooth Decay In Milk Teeth
Post Your Comments:

(Date:6/27/2016)... ... 2016 , ... The OSHA Training Center at Chabot-Las ... headquartered in Northern California, has issued an important reminder to employers to prevent ... Employers with workers exposed to high temperatures should establish a complete heat illness ...
(Date:6/27/2016)... Viejo, California (PRWEB) , ... June 27, 2016 , ... ... are fully customizable inside of Final Cut Pro X," said Christina Austin - CEO ... another unique style. Final Cut Pro X users can now reveal the ...
(Date:6/27/2016)... ... ... TherapySites, the leading website and online marketing ... Association. This new relationship allows TherapySites to continue to extend their online ... and promotional offers. , "TCA is extremely excited about this new partnership, as ...
(Date:6/27/2016)... ... June 27, 2016 , ... ... patient payment industry today announced its strategic partnership with Connance, a healthcare ... , The two companies’ proven, proprietary technology combine to provide health systems, ...
(Date:6/27/2016)... ... June 27, 2016 , ... A revolution ... the emergency ambulance transport experience for the millions of people who require these ... disrupted the taxi industry through the use of technology. Now, SmartEMS has put ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... -- One of Australia,s successful biotechnology scientists, ... new biotechnology company, Noxopharm Limited [ABN 50 608 966 123] ("Noxopharm"). ... list on the ASX. Noxopharm is a clinic-ready company ... Phase 1 clinical study later this year. ... biggest problems facing cancer patients - the ability of cancers to ...
(Date:6/26/2016)... -- Jazz Pharmaceuticals plc (Nasdaq: JAZZ ) ... Improvements Act of 1976, as amended ("HSR"), with respect ... Nasdaq: CPXX ) expired effective June 24, ... As previously announced on May 31, 2016, Jazz Pharmaceuticals ... which Jazz Pharmaceuticals has commenced a tender offer for ...
(Date:6/26/2016)...  VMS Rehab Systems, Inc. ( ) reported ... required to build a strong and stable market for ... on the OTC Markets-pink current trading platform. ... are seeing an anomaly in market trading activities that ... the Company, but shareholders and market players as well. ...
Breaking Medicine Technology: