Navigation Links
New generation of orthopedic, dental and cardiovascular prostheses
Date:1/27/2009

faces with a sponge-like pattern of nano (ultra small) pits. "We demonstrated that some cells stick better to these surfaces than they do to the traditional smooth ones," says Dr. Nanci. "This is already an improvement to the standard available biomaterial."

The researchers then tested the effects of the chemically-produced nanoporous titanium surfaces on cell growth and development. They showed that the treated surfaces increased growth of bone cells, decreased growth of unwanted cells and stimulated stem cells, relative to untreated smooth ones. In addition, expression of genes required for cell adhesion and growth were increased in contact with the nanoporous surfaces.

Different etchants have different effects

Uncontrolled growth of cells on an implant is not ideal. For example, when using cardiovascular stents, it is important to limit the growth of certain cells in order not interfere with blood flow. Also, in some cases, cells can form an undesirable capsule around dental implants causing them to fall. The scientists demonstrated that treatment with specific etchants reduced the growth of unwanted cells.

"An important element of this study is how we demonstrated the selective cellular effects of etching," says Dr. Nanci. "With subtle changes in chemical composition of etching mixtures, we can alter the nanopatterns that are created on the metal surface and control consequent cellular responses."

"Our study is groundbreaking," adds Dr. Nanci. "We use simple yet very efficient chemical treatments to alter metals commonly used in the operating room. This innovative approach may ultimately hold the key to developing intelligent materials that are not only easily accepted by the human body but that can actively respond to the surrounding biological environment."


'/>"/>

Contact: Sylvain-Jacques Desjardins
sylvain-jacques.desjardins@umontreal.ca
514-343-7593
University of Montreal
Source:Eurekalert

Page: 1 2

Related biology news :

1. Next generation microscopy: No stain, big gain
2. e-Smart Technologies to Introduce Next Generation I AM Smart Card Technology at Cartes 2008 in Paris
3. Gene therapy restores vision to mice with retinal degeneration
4. Cholesterol-lowering drugs and the effect on muscle repair and regeneration
5. Generation innovation: Young UC San Diego bioengineer to use NIH grant to fuel tissue engineering
6. ESA trains next generation of atmospheric scientists
7. Entrust Expands Relationship with Slovenia, Implements Second-generation ePassport Solution
8. Rhode Island Hospital study finds link between obesity, type 2 diabetes and neurodegeneration
9. Songbirds may hold key to advances in treatment of brain degeneration
10. Broad Institute researchers introduce next generation tool for visualizing genomic data
11. The epigenetics of increasing weight through the generations
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/22/2014)... , Dec. 22, 2014  The 2014 Holiday ... biometrics industry as Acuity Market Intelligence reports that ... finally be open. Acuity forecasts that intensifying demand ... that incorporate biometrics will drive a global market ... biometric devices by 2020.   According ...
(Date:12/19/2014)...  23andMe, Inc., the leading personal genetics company, today ... differences in genetic ancestry of individuals from across ... immigrants first arrived more than four hundred years ago, ... as a meeting place for peoples from different continents. ... mixing of peoples with African, European, and American origins ...
(Date:12/17/2014)... BELVOIR, Va. , Dec. 15, 2014 /PRNewswire-USNewswire/ ... efforts to make it easier to detect and ... chain. Today the agency started performing ... The capability will validate the authenticity of purchased ... chain. The new quality control measures will be ...
Breaking Biology News(10 mins):First Season of Holiday Shopping with Mobile Biometric Payments Wraps Up With a Present for Biometrics Industry: A Rosy Forecast for More Than 2 Billion Users of 4.8 Billion Mobile Biometric Devices by 2020 223andMe Study Sketches Genetic Portrait of the United States 223andMe Study Sketches Genetic Portrait of the United States 323andMe Study Sketches Genetic Portrait of the United States 4Defense Logistics Agency Launches DNA Marking Capability to Strengthen Microcircuit Supply Chain 2Defense Logistics Agency Launches DNA Marking Capability to Strengthen Microcircuit Supply Chain 3
... Move over Kermit, there,s a native frog rising in ... Arizona State University microbiologist Elizabeth Davidson has young children imagining ... species in Arizona and cheering for the underfrog. ... a picture book written by Davidson and brought to life ...
... in the weather could be developed, thanks to fresh discoveries ... how tiny algae renew old or damaged cell proteins say ... climates in which weather changes quickly. Researchers found that ... quickly they can adapt to environmental changes, such as a ...
... warm-blooded creatures is a special type of tissue known as ... weight-loss programs of the future. Unlike ordinary "white" fat, ... burn calories to heat up the body. It,s one of ... nights. Investigating how brown fat works in mice, a ...
Cached Biology News:Picture book portrays a 'hoppy' future for endangered frogs 2Picture book portrays a 'hoppy' future for endangered frogs 3Immunity against the cold 2Immunity against the cold 3
(Date:12/24/2014)... BOTHELL, Wash. , Dec. 24, 2014   ... a leading developer, manufacturer and marketer of proprietary clinical ... media and precision thermal shipping products ... announced that it will hold its 2015 Annual Meeting ... Because the expected date for the Annual ...
(Date:12/24/2014)... SoundConnect’s 2015 ... introduce cutting edge communication technology, provide continued ... platform upgrades. This webinar series demonstrates online ... their quest to leverage web conferencing’s most ... SoundConnect’s Marketing Manager, Seanna Baumgartner, “Our webinars ...
(Date:12/24/2014)... Tenn. (PRWEB) December 23, 2014 Nashville ... was elected treasurer for the American Society for ... advancing knowledge and research in reproductive medicine. In ... a seat on the executive board and will have ... , Dr. Hill has actively supported ASRM since 1984 ...
(Date:12/24/2014)... AUSTIN, Texas , Dec. 23, 2014 /PRNewswire/ ... solutions company focused on gynecologic disease, announced today ... W. Schuler , Birchview Fund LLC and several ... million of unregistered shares of Vermillion,s common stock ... common stock in a private placement.  ...
Breaking Biology Technology:BioLife Solutions Sets Date for Annual Meeting of Stockholders 2SoundConnect Launches Leading Edge Business Communications Webinar Series 2SoundConnect Launches Leading Edge Business Communications Webinar Series 3Nashville Fertility Center Announces Dr. George A. Hill Selected to Serve as ASRM Treasurer for 2014-15 2Nashville Fertility Center Announces Dr. George A. Hill Selected to Serve as ASRM Treasurer for 2014-15 3Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 2Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 3Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 4Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 5
... , ... Microgenomic technologies enable expression array analysis from extremely limited cell ... and amplification protocols, and novel quality assurance checks is used ... samples with confidence. This application note provides a workflow for ...
... Key words: CRF 1 ... • SPA Imaging Beads , , ... comprises four CRF-related peptides (CRF and urocortin 1, 2, and 3) and two G ... 2 α and CRF 2 β ) (1). These receptor subtypes ...
... , ... assay • LEADseeker • SPA Imaging Beads , ... Neurokinins, also known as tackykinins, are a family of small neuropeptides. ... neurokinin B (NKB), and the recently discovered hemokinin-1 (1). Neurokinins are widely ...
Cached Biology Technology:Microgenomic Expression Profiling 2Microgenomic Expression Profiling 3Microgenomic Expression Profiling 4Microgenomic Expression Profiling 5Microgenomic Expression Profiling 6Microgenomic Expression Profiling 7Development of a CRF1 neuropeptide receptor binding assay using LEADseeker Multimodality Imaging System 2Development of a CRF1 neuropeptide receptor binding assay using LEADseeker Multimodality Imaging System 3Development of an NK2 neuropeptide receptor binding assay using LEADseeker Multimodality Imaging System 2Development of an NK2 neuropeptide receptor binding assay using LEADseeker Multimodality Imaging System 3Development of an NK2 neuropeptide receptor binding assay using LEADseeker Multimodality Imaging System 4
Sf21 cells derived from Spodoptera frugiperda ovarian cells are recommended for high-level production of recombinant proteins. Higher expression levels of some proteins are seen due to the larger ce...
Sf9 cells derived from Spodoptera frugiperda ovarian cells (Sf21 cells) are commonly used to isolate and propagate recombinant AcMNPV viral stocks and to produce recombinant proteins....
... SilverQuest Silver Staining Kit is uniquely ... sensitivity with minimal protein modification for ... spectrometry problems associated with traditional silver ... kit because the reagents used do ...
... Medium is formuatled for the growth ... and Sf21 cells. Grace's Insect Mediu, ... it does not contain lactalbumin hydrosylate, ... transfection. Grace's Insect Medium, Supplemented is ...
Biology Products: