Navigation Links
NYU dental professor discovers biological clock linking tooth growth to other metabolic processes

This clock, or biological rhythm, controls many metabolic functions and is based on the circadian rhythm, which is a roughly 24-hour cycle that is important in determining sleeping and feeding patterns, cell regeneration, and other biological processes in mammals.

The newly discovered rhythm, like the circadian rhythm, originates in the hypothalamus, a region of the brain that functions as the main control center for the autonomic nervous system. But unlike the circadian rhythm, this clock varies from one organism to another, operating on shorter time intervals for small mammals, and longer ones for larger animals. For example, rats have a one-day interval, chimpanzees six, and humans eight.

NYU dental professor Dr. Timothy Bromage discovered the rhythm while observing incremental growth lines in tooth enamel, which appear much like the annual rings on a tree. He also observed a related pattern of incremental growth in skeletal bone tissue the first time such an incremental rhythm has ever been observed in bone.

Reporting his findings today in the Late-breaking News session during the 37th Annual Meeting of the American Association for Dental Research, Bromage said, The same biological rhythm that controls incremental tooth and bone growth also affects bone and body size and many metabolic processes, including heart and respiration rates. In fact, the rhythm affects an organisms overall pace of life, and its life span. So, a rat that grows teeth and bone in one-eighth the time of a human also lives faster and dies younger.

Humans have by far the most variation in these long-term incremental growth rhythms, with some humans clocking as few as five days, and others as many as ten. Correspondingly, humans have the most variability in body size among mammals.

Future research will assess whether there is a link between slower growth rhythms and growth disorders. Since the autonomic nervous system controls human behavior, future research will also assess whether growth rhythms can be linked to variations in human behavior.


Contact: Christopher James
New York University

Related biology news :

1. Dental chair a possible source of neurotoxic mercury waste
2. Small-scale fishing in Mexico rivals industrial fisheries in accidental turtle deaths
3. MIT professor to discuss future of biofuels
4. ASU professor helps solve mystery of glassy water
5. Professors video series explains all facets of Earth
6. JDRF awards University of Copenhagen professor with grant to conduct innovative diabetes research
7. TAU professor finds global warming is melting soft coral
8. K-State chemistry professor to receive Masao Horiba award
9. LSU professor studies army-ant-following birds
10. Iowa State professors genome research published in the latest issue of Science
11. Professor Sir Martin Evans wins Nobel Prize for Medicine
Post Your Comments:
Related Image:
NYU dental professor discovers biological clock linking tooth growth to other metabolic processes
(Date:11/9/2015)... DUBLIN , Nov. 09, 2015 /PRNewswire/ ... announced the addition of the "Global ... to their offering. --> ... "Global Law Enforcement Biometrics Market 2015-2019" ... Research and Markets ( ) ...
(Date:11/4/2015)... York , November 4, 2015 ... a new market report published by Transparency Market Research "Home ... Growth, Trends and Forecast 2015 - 2022", the global home ... US$ 30.3 bn by 2022. The market is estimated ... forecast period from 2015 to 2022. Rising security needs ...
(Date:10/29/2015)... --  MedNet Solutions , an innovative SaaS-based eClinical technology ... is pleased to announce that it has been selected ... of only three finalists for a 2015 Tekne ... category. The Tekne Awards honor Minnesota ... and leadership. iMedNet™ eClinical  technology ...
Breaking Biology News(10 mins):
(Date:11/25/2015)... ... November 25, 2015 , ... A long-standing ... Aerospace Professionals (OPBAP) has been formalized with the signing of a Memorandum of ... with OPBAP leaders Capt. Karl Minter and Capt. Albert Glenn Tuesday, November 24, ...
(Date:11/24/2015)... ... , ... The United States Golf Association (USGA) today announced Dr. Bruce Clarke, ... annually since 1961, the USGA Green Section Award recognizes an individual’s distinguished service to ... Clarke, of Iselin, N.J., is an extension specialist of turfgrass pathology in the department ...
(Date:11/24/2015)... ... November 24, 2015 , ... International Society for Pharmaceutical ... the premier annual events for pharmaceutical manufacturing: 2015 Annual Meeting. The conference took ... hosted the largest number of attendees in more than a decade. , ...
(Date:11/24/2015)... ... ... The Academy of Model Aeronautics (AMA), led by its Executive Council, has ... Prix, to represent the First–Person View (FPV) racing community. , FPV racing has exploded ... of racing and several new model aviation pilots have joined the community because of ...
Breaking Biology Technology: