Navigation Links
Building better bone replacements with bacteria
Date:9/6/2009

Bacteria that manufacture hydroxyapatite (HA) could be used to make stronger, more durable bone implants. Professor Lynne Macaskie from the University of Birmingham this week (7-10 September) presented work to the Society for General Microbiology's meeting at Heriot-Watt University, Edinburgh.

Using Serratia bacteria, the research showed that the bacterial cells stuck tightly to surfaces such as titanium alloy, polypropylene, porous glass and polyurethane foam by forming a biofilm layer containing biopolymers that acted as a strong adhesive. The HA coating then builds up over the surface. For practical use, the HA layer must stick tightly, then the material is dried and heated to destroy the bacteria. A micro-manipulation technique used to measure the force needed to overcome the bioglue adhesion showed that dried biofilm stuck 20-times more tightly than fresh biofilm. When coated with HA the adhesion was several times more again. Slightly roughening the surface made the bioglue much more effective.

Currently bone implant materials are made by spraying-on hydroxyapatite. This does not have good mechanical strength and the spraying only reaches visible areas. This biocoating method reaches all the hidden surfaces as the bacteria can "swim" into hidden nooks and crannies. Bacterial HA also has better properties than HA made chemically as the nanocrystals of HA produced by the bacteria are much smaller than HA crystals produced chemically, giving them a high mechanical strength.

"The bacteria are destroyed by heating, leaving just the HA stuck to the surface with their own glue - rather akin to a burnt milk-saucepan," said Professor Macaskie, "We need to do more work actually to turn the materials into materials we can use in biomedicine and the environment. Then they need to be tested in real life situations with clinical and environmental trials."


'/>"/>

Contact: Dianne Stilwell
diannestilwell@me.com
44-795-720-0214
Society for General Microbiology
Source:Eurekalert

Page: 1

Related biology technology :

1. Secret of sandcastle construction could help revive ancient building technique, researchers say
2. Arts Way Manufacturing Announces Launch of New Web Site For Arts Way Scientific - Buildings For Science
3. Techstreet Launches BuildingBlocks Utility for Industry Standards Saving Time and Increasing Productivity for Engineers
4. Photo-catalytic, self cleaning coating for building exteriors
5. PointCross Releases Catalyst for Building Business-Ready SharePoint Solutions in 1/10th the Time
6. AEterna Zentaris Sells Quebec City Building for $7.1 million
7. Alexandria Real Estate Equities, Inc. Features Green Buildings and Sustainable Operations Initiatives and Tour at 2008 BIO
8. Roche Molecular Diagnostics Invests $57.5 Million in Green Research Building
9. University of Maryland, Baltimore BioPark Signs Gliknik Inc. as First Tenant in Its BioInnovation Center in Building Two
10. Millennium Announces 2008 Goals for Growth, Building on Record 2007 Results
11. Siemens Building Technologies Helping Companies Participate in EPA Labs21 Movement With Comprehensive Compliance Solution Strategy
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/23/2016)... , ... June 23, 2016 , ... ... pleased to announce the launch of their brand, UP4™ Probiotics, into Target stores ... 35 years, is proud to add Target to its list of well-respected retailers. ...
(Date:6/23/2016)... 23, 2016 A person commits a crime, and ... to track the criminal down. An outbreak of ... Drug Administration (FDA) uses DNA evidence to track down the ... Sound far-fetched? It,s not. The FDA has increasingly used a ... of foodborne illnesses. Put as simply as possible, whole genome ...
(Date:6/23/2016)... MONICA, Calif. , June 23, 2016  The Prostate Cancer Foundation ... pioneer increasingly precise treatments and faster cures for prostate cancer. Members of the ... institutions across 15 countries. Read More About the Class ... ... ...
(Date:6/23/2016)... ... 2016 , ... Supplyframe, the Industry Network for electronics hardware ... . Located in Pasadena, Calif., the Design Lab’s mission is to bring together ... built and brought to market. , The Design Lab is Supplyframe’s physical representation ...
Breaking Biology Technology:
(Date:6/2/2016)... 2, 2016 Perimeter Surveillance & ... Systems, Physical Infrastructure, Support & Other Service  ... offers comprehensive analysis of the global Border ... generate revenues of $17.98 billion in 2016. ... a leader in software and hardware technologies for advanced ...
(Date:5/20/2016)... , May 20, 2016  VoiceIt is excited ... with VoicePass. By working together, VoiceIt ...  Because VoiceIt and VoicePass take slightly different approaches ... increases both security and usability. ... about this new partnership. "This marketing ...
(Date:5/9/2016)... -- Elevay is currently known as the ... high net worth professionals seeking travel for work   ... there is still no substitute for a face-to-face meeting. ... deal with a firm handshake. This is why wealthy ... citizenship via investment programs like those offered by the ...
Breaking Biology News(10 mins):