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Author Topic: Serious (bio)medical height increase research projects  (Read 174910 times)
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HaraldO
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« Reply #200 on: June 12, 2017, 09:27:43 PM »

Hello,
a nice piece of work concerning bone formation and function.
Best wishes
Harald

Quote:
"Researchers discover mechanism that controls bone formation, function
Date:
    May 30, 2017
Source:
    University of Arkansas, Fayetteville
Summary:
    A mechanism that controls the formation and function of plate-like nanocrystals that play a critical role in bone composition has now been discovered by researchers.

An international, multidisciplinary research team, including an engineering professor at the University of Arkansas, has discovered a mechanism that controls the formation and function of plate-like nanocrystals that play a critical role in bone composition.

The researchers' discovery, published in the May 2017 issue of Biomaterials, advances the field of tissue engineering and could lead to the creation of a synthetically produced biomaterial to replace bones.

Arun Nair, assistant professor of mechanical engineering, contributed to the project by generating computational models at the nanometer scale. A nanometer is about the width of two silicon atoms. The simulations were performed at the U of A's Arkansas High Performance Computing Center. To predict the mechanical properties, Nair relied on density functional theory, a quantum mechanical modeling method used to understand the structure of atoms, molecules and other biological processes.

"This research suggests, for the first time, that a chemical substitute, in absence of protein or other organic substances, affects the crystallite morphology of bone mineral," Nair said. "These are nanometer-sized crystallites, but still, the finding provides a much better understanding of the processes that control size and shape of particles that make up bone."

Bone is composed of protein collagen and mineral in the form of plate-like nanocrystals. Previous research has shown that the mineral crystallites play a critical role in proper bone function and physiology. Their nanometer size renders them nearly flawless, which contributes to bone strength. Though researchers have known that nanocrystal size and morphology are critical to the proper mechanical and physiological functioning of bone, the mechanism that controls these properties has been unclear.

Mimicking biochemical processes, the researchers synthesized apatite nanocrystals with carbonate. Apatite is a group of phosphate minerals. The nanocrystals exhibited morphologies similar to those seen in natural bone mineral. Nair's atomistic models of the apatite nanocrystals helped the research team gain a better understanding of the mechanical properties of apatite crystals.

Story Source:

Materials provided by University of Arkansas, Fayetteville."
( https://www.sciencedaily.com/releases/2017/05/170530082337.htm )
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