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Tag: "implants" at biology news

ASU research shows connection between testosterone, dietary antioxidants and bird coloration

...gly found that when they administered testosterone implants to zebra finches that it acted as a stimulant to the immune system. They went on to show that carotenoids acquired from food and circulating through the blood were changing in ways that were linked to testosterone levels. Birds who were given additio...

How brain pacemakers erase diseased messages

...on for Parkinson's disease in 1997. The electrical implants are also an approved therapy for other movement di...ly useful for zeroing in on effective settings for implants used to treat diseases, such as epilepsy, in which seizures occur only sporadically, as well as cond...

Implanting dopamine generators in brain cells obtains improvement in Parkinson's in monkeys

...rch team concluded that the mechanism by which the implants in the striate area of the brain of dopamine-generating cells manage to ameliorate Parkinson's appears to be related to the capacity of these cells to release substances (trophic factors) that induce an increase of the dopaminergic cells (that usuall...

Intelligent materials to regenerate bone tissue

... the damaged item. Given this hypothesis, the bone implants have to comply with a series of requisites capable...isorders and other damage caused by accidents. The implants required for this type of solutions are more complex and sophisticated than the small implants known...

Nanotextured implant materials: blending in, not fighting back

... found that simply changing the surface texture of implants can dramatically change the way cells colonize a w...oh's next step will be to test such nanostructured implants in live animals. If the same behavior holds true for materials placed in the body, the rapid growth ...

Radiation therapy combo cures prostate cancer long-term

...f men treated with a combination of radiation seed implants and external beam radiation therapy for prostate c... Doctors wanted to look at the combination of seed implants and external beam radiation therapy, two different types of radiation therapy, to prolong the long-t...

MU researcher placing eye implants in cats to help humans see

...cter who can see through the assistance of special implants in his eyes. While the Star Trek character "lives"...imed at determining safety issues in regard to the implants and to further develop surgical techniques. We also are examining the protection the implants might ...

Computer imaging assists with facial reconstructive surgery

...tween 1999 and 2004. Six of the patients received implants in their chins, while eight underwent a procedure known as osseous genioplasty, involving surgery on the chin bone. Preoperative and postoperative photographs were analyzed and the distance from the porion (the top of the external ear canal) to the ...

DNA layer reduces risk of reserve parts being rejected

...en van den Beucken and John Jansen have given body implants a DNA layer. This layer ensures a better attachmen...invention makes it easier and more reliable to use implants and has already been patented. Van den Beucken reasoned that a DNA coating should have a lot of ad...

Men with prostate cancer avoid radiation due to misconceptions

...en external beam radiation therapy, radiation seed implants and surgery to treat their cancer. During external beam radiation, a beam of radiation, or X-ray, is directed through the skin to the cancer and the immediate surrounding area to kill the cancer. To minimize side effects, radiation is given five days...

Carnegie Mellon scientists use 'green' approach to transform plastics manufacturing

... example, many ATRP-generated plastics for medical implants would be acceptable from a health perspective because they contain so little copper. However, if the target application -- such as a coating for a biomedical stent -- absolutely requires the removal of residual catalyst, companies will now have much ...

Artificial cornea offers better results for infants, some blind patients

...a himself stopped doing procedures with artificial implants for several years because of the poor results and high rates of complication. Meanwhile, Aquavella's former mentor, Claes Dohlman, M.D., of the Massachusetts Eye and Ear Infirmary, was evaluating new types of designs, eventually devoting decades to t...

Changing length of days reverses how estrogen affects aggressiveness in mice

... production of testosterone. They were fitted with implants that controlled their testosterone levels. The males were then treated with a drug known as an aromatase inhibitor, which halts the production of estrogen. This class of drugs is commonly used to treat estrogen-dependent breast cancer. In mice hou...

Critical hearing gene helps send auditory messages to brain

...cochlear implants," the researchers said. Cochlear implants analyze sound messages and convert them into electrical signals, bypassing the cochlea to directly stimulate the auditory nerves. "That's good news," Petit said, since otoferlin-linked deafness is an auditory neuropathy, a class of hearing impairme...

Fat stem cells being studied as option for breast reconstruction

...or breast reconstruction involve either the use of implants or a procedure whereby fat tissue taken from another part of the body is shaped into the form of a breast. Neither is ideal nor without risk. The use of adipose- or fat-derived stem cells may represent a better solution for soft tissue reconstruction...

Finding the right mix: A biomaterial blend library

From dental implants to hip replacements, biomaterials have become big business. But scientists pursuing this modern medical revolution share a basic challenge: biocompatibility. How will a biomaterial on the lab bench actually work inside the human body? Will a patient ...

Researchers to develop ultra-miniature implantable sensors to measure blood flow

... monitoring equipment could consist of microscopic implants or sensor systems integrated with present tools." Kan noted that these miniature sensors can be as small as 100 microns in length by 100 microns in width, and with development, these sizes could shrink to several microns. To give that size some pers...

Nanotechnology being used to improve biocompatibility of human prosthetics and implants

... better ways to keep them active. In the fields of implants and prosthetics calcium phosphate (CP) coatings on titanium alloy implants are proving their worth in orthopaedic and dental applications. The most promising form of CP are ...

Protein-coated dental implants could improve bone regeneration

Titanium dental implants coated with proteins that induce bone formation ma...tory tests, MCG researchers applied a protein onto implants that directs endogenous stem cells to become bone-forming cells. The result was a nearly complete re...

Sandia work launched on space shuttle shows live cells influence growth of nanostructures

...t for avoiding infections that could be carried by implants and catheters. The cell's ability to sense and respond to its environment is what forms these unique nanostructures, says Brinker. During spin-coating, the cells react to the increasing concentrations of materials in the developing silica nanostruc...

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