Navigation Links
Preventing ear infections in the future: Delivering vaccine through the skin
Date:5/21/2009

An experimental vaccine applied the surface of the skin appears to protect against certain types of ear infections. Scientists from the Research Institute at Nationwide Children's Hospital in Columbus, Ohio, report their findings today at the 109th General Meeting of the American Society for Microbiology in Philadelphia.

"Our data are the first to show that transcutaneous immunization is an effective way to prevent experimental ear infections and lays the foundation for an effective, yet simple, inexpensive and potentially transformative way to deliver vaccines," says Laura Novotny, one of the study researchers.

Nontypeable Haemophilus influenzae (NTHi) is one of the three main bacterial causes of otitis media (OM), an infection or inflammation of the middle ear. OM is one of the most significant health problems for children in the United States, costing approximately $5 billion annually. It is estimated that 83% of all children will experience at least one ear infection prior to 3 years of age.

Currently infections are managed with antibiotics; however, the emergence of antibiotic-resistant microorganisms is of concern. Surgery to insert tubes through the tympanic membrane relieves painful symptoms, but the procedure is invasive and requires the child to be under general anesthesia. Thus, it is necessary to develop different ways to treat or preferably prevent this disease.

"We have designed several vaccine candidates which target proteins on the outer surface of this bacterium. Previous work in our lab showed that after immunization by injection, each of the three vaccine candidates prevented experimental ear infections caused by NTHi. In this study, we now wanted to test an alternative but potentially equally effective method to deliver a vaccine," says Novotny.

The method, known as transcutaneous immunization, involved placing a droplet of each vaccine onto the ear and rubbing it into the skin.

In this study, four groups of chinchillas were immunized with one of the three vaccine candidates. A fourth group received a placebo. Each vaccine was placed on the ears of chinchillas once a week for three weeks. All animals were then inoculated with NTHi through the nose and directly into the middle ears. Animals that received the vaccines were able to very rapidly reduce, or completely eliminate NTHi from the nose and ears, but animals that received a placebo did not.


'/>"/>

Contact: Jim Sliwa
202-942-9297
American Society for Microbiology
Source:Eurekalert

Related biology news :

1. Preventing tuberculosis reactivation
2. Environmental epigenetics has potential for preventing and treating disease
3. Streams remove significant amounts of nitrogen, preventing downstream dead zones
4. Scientists demonstrate feasibility of preventing malaria parasite from becoming sexually mature
5. MIT: Preventing forest fires with tree power
6. Kazak apple research key to preventing blue mold
7. Preventing a broken heart: Research aims to reduce scarring from heart attacks
8. Preventing soil erosion in continuous corn
9. Fast-food diet cancels out benefits of breastfeeding in preventing asthma
10. New vaccine developed for preventing uncommon cold virus
11. Preventing rangeland erosion: Developing better management practices in Iran
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/15/2016)... -- A new partnership announced today will help life ... a fraction of the time it takes today, ... insurance policies to consumers without requiring inconvenient and ... rapid testing (A1C, Cotinine and HIV) and higi,s ... pulse, BMI, and activity data) available at local ...
(Date:3/31/2016)... 2016  Genomics firm Nabsys has completed a financial ... Bready , M.D., who returned to the company in ... leadership team, including Chief Technology Officer, John Oliver ... Nurnberg and Vice President of Software and Informatics, ... Dr. Bready served as CEO of Nabsys from ...
(Date:3/21/2016)... March 22, 2016 Unique ... passcodes for superior security   ... provider of secure digital communications services, today announced it ... and offer enterprise customers, particularly those in the Financial ... and voice authentication within a mobile app, alongside, and ...
Breaking Biology News(10 mins):
(Date:4/27/2016)... ... April 27, 2016 , ... Global Stem Cells ... of an Asia-Pacific Symposium as other research and development initiatives for potential stem cell ... and top Global Stem Cells Group executives began meeting to establish a working agenda ...
(Date:4/26/2016)... ... April 27, 2016 , ... ... Roca Rothgerber Christie LLP as an associate in the firm’s Intellectual Property practice ... electrical, mechanical and electromechanical patent applications. He has an electrical engineering and computer ...
(Date:4/26/2016)... ... April 26, 2016 , ... Heidelberg Instruments, a ... technology innovation for its Volume Pattern Generator (VPG) line of lithography systems. The ... photomasks as well as a solution for mid volume direct write lithography applications. ...
(Date:4/26/2016)... ... April 26, 2016 , ... BioFactura, Inc ., ... A round of financing. Healthy investor interest drove significant oversubscription of the original ... biologics, known as biosimilars, to the advanced preclinical stages. , Chief Executive Officer and ...
Breaking Biology Technology: