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Tag: "biodegradable" at biology news

University of Pittsburgh School of Medicine researchers develop 'off-the-shelf' vascular grafts

...ssels from muscle-derived stem cells (MDSCs) and a biodegradable polymer that exhibit extensive remodeling and rema...aft by “bulk seeding,” or spraying, MDSCs inside a biodegradable porous, tubular polyester urethane scaffold using a rotational vacuum seeding device. After cult...

Intelligent materials to regenerate bone tissue

...elligent material, based on nanoparticles and of a biodegradable nature. Also to be developed is the cell culture in three dimensions, as well as ensuring the biocompatibility of the material....

Biodegradable microspheres deliver time release vaccines, stimulate different immune response

...ew vaccine delivery system using microspheres of a biodegradable polymer may not only reduce the need for booster s...ne into the system slowly over time. They chose a biodegradable polymer, called polyandydride, in a microsphere formulation. This polymer was already being used as...

Nanotextured implant materials: blending in, not fighting back

...t Derick Miller, the team molded pieces of PLGA, a biodegradable polymer often used for blood vessel grafts, so they came out completely covered with bumps that were 100, 200 or 500 nanometers in diameter. The surface with 200-nanometer features strongly favored the adsorption and spreading of fibronectin, a prote...

Swell gel could bring relief to back pain sufferers

...in." He added that future work will investigate biodegradable microgels that release additives to stimulate regeneration of intervertebral disc tissue. ...

Tissue engineering for craniofacial reconstruction

...emulsion templating can be used to generate rigid, biodegradable scaffolds with interconnected pores. These scaffolds are of particular interest in craniofacial tissue engineering, due to the rigidity of the resulting foams and the ease of fabrication. ...

Researcher examines polymers created with poultry feathers

... at Virginia Tech, is investigating ways to create biodegradable plastics from agricultural byproducts such as poul..." According to Barone, the technology to create biodegradable plastics from biomass, such as corn and soybeans, has been around for more than 70 years. However th...

A new approach to growing heart muscle

...gineering platforms: self-organization strategies, biodegradable hydrogels such as fibrin, and polymeric scaffolds. Each approach may turn out to have its own applications, says Birla, and the ability to conduct side-by-side comparisons is important. Other researchers have focused on one approach or another, bu...

MIT material stops bleeding in seconds

...University researchers have shown that some simple biodegradable liquids can stop bleeding in wounded rodents within seconds, a development that could significantly impact medicine. When the liquid, composed of protein fragments called peptides, is applied to open wounds, the peptides self-assemble into a nanosca...

Biodegradable napkin -- featuring sensitive nanofibers -- may quickly detect biohazards

...11) in San Francisco. Once fully developed, the biodegradable absorbent wipe would contain nanofibers containing antibodies to numerous biohazards and chemicals and would signal by changing color or through another effect when the antibodies attached to their targets. Users would simply wipe the napkin across a...

Iowa State researchers improving plastics made from corn and soy proteins

...ater to the molecule. And that's how biorenewable, biodegradable plastics can be made from the proteins in Iowa cro...e processing technology is expected to enhance the biodegradable plastics while allowing the researchers to use less base material to make the plastics. Grewell s...

Microscopic scaffolding offers a 'simple' solution to treating skin injuries

...al way." The polymers used in the scaffold are biodegradable materials already approved for medical application...y developing a new method of making, from the same biodegradable polymers, aligned-fibre 'mats' of potential use in promoting nerve or tendon growth. This method is ...

New 'self-exploding' microcapsules could take sting out of drug delivery

...ame job. Each of the new microparticles features a biodegradable gel core that is surrounded by a lipid membrane. As the gel biodegrades, pressure builds up in the membrane. Eventually the microcapsule ruptures, releasing the medication. The system, the researchers note, could change how some vaccines are adminis...

FDA approves first medical device using rutgers biomaterial

...dical device for hernia repair that incorporates a biodegradable technology developed at the university. This action signals a paradigm shift in the application of biomaterials from permanent prosthetic replacements toward regenerative medicine, in which materials help the body to repair itself and are then resorb...

Nano-particles effective in killing cancer with one-two punch of chemotherapeutics

...t the University of Pennsylvania, demonstrate that biodegradable nano-particles containing two potent cancer-fighting drugs are effective in killing human breast tumors. The unique properties of the hollow shell nano-particles, known as polymersomes, allow them to deliver two distinct drugs, paclitaxel, the leadi...

Bioactive cement scaffold may improve bone grafts

...tural bone by covering it with several layers of a biodegradable fiber mesh already used in clinical practice. "Bone cells are very smart," says Hockin Xu, of the ADAF and principal investigator for the project. "They can tell the difference between materials that are bioactive compared to bioinert polymers. Our ...

Wisconsin scientists find a way to make human collagen in the lab

...ts and others seeking perpetual youth. Catgut, the biodegradable sutures made from cow or horse intestines and used in surgery to minimize scarring, is also a form of collagen. But for such a commonplace and useful protein, collagen has defied the efforts of biomedical researchers who have tried mightily to synth...

Nanotechnology may find disease before it starts

...said that Liu and her team are working on creating biodegradable nanoparticles. For the purposes of this study, however, the researchers wanted to use a hard substance, silica, to see if their idea would work. The strongest ultrasound signals are those produced by sound waves bounce off a hard surface. While not b...

Rice bioengineers pioneer techniques for knee repair

...replacement transplant tissues involved the use of biodegradable implants that are seeded with donor cells and growth factors. These implants, which engineers refer to as scaffolds, foster the tissue growth process by acting as a template for new growth, but they always present a risk of toxicity due to the fact t...

Microbes convert 'Styrofoam? into biodegradable plastic

...ystyrene foam ?commonly known as Styrofoam??into a biodegradable plastic, according to Kevin O’Connor, Ph.D., of Un...ng a petroleum-based plastic waste into a reusable biodegradable form. O’Connor and his colleagues from Ireland and Germany, utilized pyrolysis, a process that tran...

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