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.

Source-Eurekalert
AN
'"/>




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:
*Name:
*Comment:
*Email:


(Date:2/11/2016)... ... February 11, 2016 , ... ... speaker, trainer and author Ray Clarke poses a question as a challenge for ... In his book, "Being in the Being" (published by Partridge Singapore), Clarke explores ...
(Date:2/11/2016)... (PRWEB) , ... February 11, 2016 , ... Colorado spine ... as one of 334 spine surgeons to know in 2016 . The list ... the field of spine surgery. , Dr. Corenman understands the importance of clinical ...
(Date:2/11/2016)... Rock, AR (PRWEB) , ... February 11, 2016 , ... ... in their community by announcing a new fundraiser in support of a local boy ... also hopes the campaign will bring awareness to, and rally support for, all local ...
(Date:2/11/2016)... ... February 11, 2016 , ... ... the American Academy of Dermatology Annual Meeting at the Walter E. Washington Convention ... raise awareness for both the condition of hyperhidrosis (excessive sweating) and its treatment ...
(Date:2/11/2016)... ... February 11, 2016 , ... The book, “Computers Should Just Work!”, provides ... to ask your IT consultant before signing a contract and how to spot an ... “With companies relying heavily on e-mail and technology, it’s more important than ever to ...
Breaking Medicine News(10 mins):
(Date:2/11/2016)... The primary goal of this research is ... the usage of liquid biopsy. Key information the survey ... Timeframe of liquid biopsy adoption amidst future users - ... type - Sample inflow to conduct liquid biopsy tests ... and so on. - Correlation analysis of sample type ...
(Date:2/11/2016)... Feb. 11, 2016 Laboratory glassware ... in laboratories. These may range from microscope slides to ... is made from borosilicate glass because of its low ... the other hand, started gaining popularity over the past ... to replace glass with plastic in several applications due ...
(Date:2/11/2016)... -- Governor Andrew M. Cuomo today announced a major expansion ... Western New York . This announcement, made ... includes a major expansion of Athenex,s North American headquarters ... , as well as the creation of a state-of-the-art, ... . The combined projects are expected to yield ...
Breaking Medicine Technology: