Tag: "implants" at biology news

Yale professor named 2004 Biomedical Engineering Society Distinguished Lecturer

...proteins, and genes, and they have created polymer implants to promote the regeneration of diseased and traumatized tissues in the nervous system and to enhance the survival of transplanted cells and tissues. The annual award recognizes originality, leadership and outstanding achievement in the science and pr...

Safer medical implants, more comfortable fabrics among research items at Rochester meeting

...osium on research that could lead to safer medical implants and a look at how coating technology has made fabr...g are: Coating technologies promise safer medical implants Advances in coatings can mean safer medical implants that are less likely to be rejected or cause ...

New source for heart bypass replacement blood vessels: Fibrin-based TEVs

...ing new collagen and elastin," they said. When the implants were removed after 15 weeks, there was no fibrin left; it had been completely replaced by collagen. "Most importantly," the researchers wrote, fibrin-based "TEVs remained patent and demonstrated blood flow comparable with that of the control (natural...

System lowers breast augmentation re-operation rate by 17 percent

...n (FDA) advisory panel hearings on silicone breast implants in October 2003, panelists expressed concern about...s. "Although plastic surgeons began to use saline implants after silicone implants were banned by the FDA, the re-operation rates for primary breast augmentati...

Story tips from the Department of Energy's Oak Ridge National Laboratory

...f new ceramics, plastics and coatings for surgical implants such as artificial hips and knees. ORNL's Mechanical Characterization and Analysis User Center participated in acquiring the instrument. Funding is provided by the Department of Energy's Office of FreedomCAR and Vehicle Technologies and the High Temp...

Tips from the Journals of the American Society for Microbiology

...urnalApplied and Environmental Microbiology. Steel implants and pins are commonly used by orthopedic surgeons torepair human bone structure. Infection occurs in patients at analarming rate of up to 71%, often causing serious complicationseffecting the surrounding tissue and bone. The formation of biofilms a...

'Blind' cells see the light; maybe someday humans will, too

...well in the ear -- witness the success of cochlear implants -- the eye is a much more complicated place, Kramer said. "This is a more organic, less invasive approach than electrodes," Kramer said, noting that insertion of electrodes can cause problems with biocompatibility. Electrodes also are large and tend ...

Purdue researchers align nanotubes to improve artificial joints

... artificial joints might be improved by making the implants out of tiny carbon tubes and filaments that are al...dy. Rejection eventually weakens the attachment of implants and causes them to become loose and painful, requiring replacement surgery. Aligning the nanotubes t...

New study discovers why 'persister' cells never say die

...n can be nearly impossible to eradicate, requiring implants to be removed at great risk and cost. Deleting or deactivating the HipA gene could save thousands of lives and millions of dollars....

Component of plastic stimulates growth of certain prostate cancer cells

...l non-steroidal BPA on human prostate cancer tumor implants in laboratory animal models will shed additional light on whether the synthetic pseudo-estrogen encourages tumor growth in whole animal systems. "We'll know more about the 'hormone sensitizing' ability of BPA in prostate cancer cells from studies on ...

Gene therapy promising for growing tooth-supporting bone

...arly 50 percent more supporting bone around dental implants than those receiving the conventional treatment. "This study represents a proof-of-concept investigation. We are encouraged about the promise of this treatment," said Giannobile, also an associate professor of biomedical engineering and director of...

New Georgia Tech micro-CT imaging technique to help tissue engineers improve bone regeneration

...ts therefore lack living cells that could help the implants better integrate with existing bone. Consequently, they don't heal as well as autografts and can re-break in up to 30 percent of patients within a year. Live autograft bone integrates much better, but large amounts of bone are needed to repair a site...

Georgia Tech research indicates immune complications associated with combination medical devices

...ices are traditionally thought of as fairly simple implants such as stents and hip replacements - pieces of plastic or metal that are placed in the body to handle a very specific function. But biomedical devices now on the drawing board are considerably more sophisticated and represent an unprecedented meldin...

UCSD medical/bioengineering reseachers show titanium debris satobtage artificial joints

... Engineering. The team demonstrated that titanium implants are safe in large blocks, but at the microscopic level, wear and tear can generate micrometer-sized particles. "As replacement joints are becoming increasingly common in aging populations, our results explain how such devices fail and suggest that ...

Ophthalmologists and physicists team up to design 'bionic eye'

...nited States, Germany and Japan that place retinal implants on the side of the retina facing the outside of th... interfaces that aren't corrosive. Current retinal implants provide very low resolution--just a few pixels. But several thousand pixels would be required for th...

Georgia Tech research reveals how biomaterial properties control cellular responses

...matory response. This unfriendly reaction prevents implants from integrating into the body and functioning as well as they could. While implanted biomaterials can be designed with different surface chemistries and roughness to influence inflammatory responses, the process is not well understood. Now, research...

Ophthalmologists implant five patients with artificial silicon retina microchip

...cruited from a pool of about 5,000 applicants. The implants are designed for people with retinal diseases such as macular degeneration and retinitis pigmentosa, which cause blindness and vision impairment in about 10 million Americans. More than one million of these people are legally blind. "As is commonly s...

Innovative coating could give medical implants a longer life

...lants. Currently the longevity of certain medical implants suffers because bacteria, cells and proteins in th..., it holds promise for use on a variety of medical implants including urinary catheters, cardiac stents, biosensors and dental implants and devices. The coating...

MIT tissue engineers implant viable, vascularized 3D muscles

... robustly with the body's own tissues than similar implants without blood vessels. "What's even more exciting...e as many of the cells survived in the tri-culture implants compared to implants without endothelial cells. "The myoblasts also became even longer tubes when im...

Purdue scientists may have found key to halting spinal cord damage

...nes can heal and also oscillating field stimulator implants that encourage the tissue to regenerate," Shi said. "We are hopeful that detoxifying acrolein will allow doctors to stop the chemical attack cycle as well, adding to the number of treatment methods available." The center was established in 1987 both ...

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(Date:7/23/2014)... are packed with healthful compounds, and now lab tests ... as prescription anti-diabetic medication, scientists report. In their new ... Food Chemistry , they found that how the herbs ... which compounds contribute the most to this promising trait. ... that in 2012, type-2 diabetes affected more than 8 ...
(Date:7/23/2014)... Basement membrane degradation and blood-brain barrier damage ... and brain functioning. Matrix metalloproteinase-9 is able ... basement membrane around cerebral blood vessels and ... Huilian Hou and colleagues from the First ... Jiaotong University, China induced cerebral infarction in ...
(Date:7/23/2014)... hippocampal region of the brain is important ... However, the underlying mechanisms are unclear. Dr. ... China monitored the activity of hippocampal neurons ... the mechanisms underlying the neuronal responses. Somatosensory ... changed local field potentials into theta rhythm-dominated ...
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