Navigation Links
USC School of Dentistry researchers uncover link between osteoporosis drugs and jaw infection
Date:4/30/2008

A group of University of Southern California School of Dentistry researchers says it has identified the slimy culprits killing the jawbones of some people taking drugs that treat osteoporosis.

Microbial biofilms, a mix of bacteria and sticky extracellular material, are causing jaw tissue infections in patients taking bisphosphonate drugs, said Parish Sedghizadeh, lead researcher and assistant clinical professor at the USC School of Dentistry.

Sold under brand names such as Fosamax, Boniva and Actonel, bisphosphonates are prescribed to millions of patients to combat osteoporosis, a bone-wasting disease that increases the risk of fractures.

Sedghizadeh said there have been increasing reports of osteonecrosis (bone death) of the jaw in patients who have been taking the drugs for osteoporosis or for treatment from the bone-wasting effects of cancer. He said he decided to investigate further after seeing patients in USC dentistry clinics who had the unusual jaw infection.

This is the first study that identifies microbial biofilms in the bone of bisphosphonate patients who have osteonecrosis of the jaw, Sedghizadeh said.

Jaw osteonecrosis occurs when bacteria-laden biofilms infect the jaw after the bone is exposed, typically because of a tooth extraction or injury.

The USC research team includes renowned biofilm expert J. William Costerton, director of the Center for Biofilms at the USC School of Dentistry.

Pioneered by Costerton, biofilm theory has moved scientists beyond thinking of bacteria as free-floating organisms. Instead, bacteria build biofilm communities, attaching to surfaces and communicating and defending against antimicrobial invaders.

The team used powerful scanning electron microscopes to study patients jawbone samples. The images revealed biofilm bacteria sprawling over pitted tissue.

The scientists are now trying to determine why bisphosphonate drugs seem to open the door for biofilm-associated infections of the jaw.

Now that weve know biofilms are behind the infection of the jaw, we are studying ways to effectively treat or prevent the osteonecrosis, Sedghizadeh said.


'/>"/>

Contact: Angelica Urquijo
urquijo@usc.edu
213-740-6568
University of Southern California
Source:Eurekalert

Related biology news :

1. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
2. Rutgers high school outreach gets $3 million boost from NSF
3. UGA Odum School of Ecology professor receives grant to study West Nile Virus in NYC
4. Folic acid lowers blood arsenic levels, according to Mailman School of Public Health study
5. UMass Medical School researchers receive $8.5M grant award to fight AIDS
6. Asthma link to post-traumatic stress disorder, says Mailman School of Public Health study
7. Kids eat more fruits, vegetables when schools offer salad bar
8. CWRU School of Medicine has evidence vaccine against malaria will reduce disease
9. U. Mass Medical School and Carnegie announce licensing agreements with Oxford BioMedica
10. Cummings School receives Rockefeller Foundation grant
11. Iowa middle school wins IEEE-USA National Engineering Award
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/2/2016)... 2, 2016 The Department of Transport ... the 44 million US Dollar project, for the , ... including Personalization, Enrolment, and IT Infrastructure , to ... production and implementation of Identity Management Solutions. Numerous renowned international ... Decatur was selected for the most compliant ...
(Date:6/2/2016)... , June 2, 2016 ... Manned Platforms, Unmanned Systems, Physical Infrastructure, Support & Other ... provider visiongain offers comprehensive analysis of the ... this market will generate revenues of $17.98 billion in ... acquired DVTEL Inc, a leader in software and hardware ...
(Date:5/24/2016)... facilitates superior patient care by providing unparalleled technology to leaders of the medical imaging ... product recently added to the range of products distributed by Ampronix. Photo ... ... ... News ...
Breaking Biology News(10 mins):
(Date:6/23/2016)...   Boston Biomedical , an industry leader ... target cancer stemness pathways, announced that its lead ... Designation from the U.S. Food and Drug Administration ... gastroesophageal junction (GEJ) cancer. Napabucasin is an orally ... stemness pathways by targeting STAT3, and is currently ...
(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)... , ... June 23, 2016 , ... In a new ... in Denmark detail how a patient who developed lymphedema after being treated for breast ... results could change the paradigm for dealing with this debilitating, frequent side effect of ...
(Date:6/23/2016)... CA (PRWEB) , ... June 23, 2016 , ... ... software, is exhibiting at the Pennsylvania Convention Center and will showcase its product’s ... conference. ClinCapture will also be presenting a scientific poster on Disrupting Clinical Trials ...
Breaking Biology Technology: