Navigation Links
HPV, periodontitis work in tandem to increase risk of tongue cancer

BUFFALO, N.Y. -- Persons with periodontitis who also are infected with human papillomavirus (HPV) are at increased risk of developing tongue cancer, new research conducted at the University at Buffalo School of Dental Medicine has shown.

Periodontitis is a chronic inflammatory disease that destroys connective tissue and bone supporting the teeth. It has been associated with various systemic diseases, including diabetes and heart disease.

Researchers from UB and Roswell Park Cancer Institute published the first study showing an association between long-standing periodontitis and risk of tongue cancer in the May 2007 issue of Archives of Otolaryngology - Head and Neck Surgery. Studies conducted elsewhere have found that HPV is an independent risk factor for a subset of head and neck cancers.

The UB researchers now have shown that the two infections appear to work in tandem to boost the chances of developing tongue cancer.

Mine Tezal, D.D.S., Ph.D., assistant professor in the Department of Oral Diagnostic Sciences, UB dental school, and research scientist at Roswell Park Cancer Institute, presented results of this research today (April 4, 2008) at the 2008 American Association of Dental research meeting in Dallas, Texas.

Evidence of periodontitis-HPV synergy has important practical implications, said Tezal, because there is a safe treatment for periodontitis, but no treatment for HPV infection. If these results are confirmed by other studies, this has a tremendous relevance in predicting and intervening in the initiation and prognosis of HPV-related diseases, including head and neck cancers.

The study involved 30 patients newly diagnosed with squamous cell carcinoma on the base of the tongue between 1999 and 2005 at Roswell Park Cancer Institute for whom data was available on both periodontitis and tumor HPV status. Cumulative history of periodontitis was determined by assessing the loss of alveolar bone, the bones that underlie and support the teeth, via X-ray.

Tumor status was identified from paraffin-embedded tumor samples analyzed by polymerase chain reaction. Analysis concentrated on the presence of tumors containing the DNA of two of the most common types of HPV virus associated with oropharyngeal cancers, HPV-16 and HPV- 18.

Results showed that 63 percent, or 19 out of 30 patients, had tumors that were positive for HPV-16 DNA; none of the tumor samples were found to contain HPV-18 DNA. In addition, 90 percent of patients with tumors positive for HPV had periodontitis, and 79 percent of patients whose tumors showed no presence of HPV did not have periodontitis.

HPV infection is a necessary, but not sufficient, cause of head and neck cancer, said Tezal. Although the majority of the population is infected with HPV at least once in their lives, most infections are cleared rapidly by the immune system and do not result in pathology.

Persistence of HPV infection is the strongest risk factor for carcinogenesis, she said. Thus, the identification of factors that influence the persistence of HPV infection is critical to facilitate efforts to prevent head and neck cancers. This study implicates that chronic inflammation and co-infection with oral bacteria may be significant factors in the natural history of HPV infection.


Contact: Lois Baker
716-645-5000 x1417
University at Buffalo

Related medicine news :

1. The Quantum Group Announces Increased Patient Enrollment Following Medicare Advantage Open Enrollment Period
2. Neuroscience Peer Review Consortium announces increased journal participation
3. Eye Disease Continuing to Increase Among Americans
4. Robbins & Myers Reports Additional Gain and Increases Earnings Guidance
5. Increased risk of myocardial infarction and diabetes in East Germany
6. HIV Drugs Linked to Increased Risk of Heart Attack
7. Fatality rates increase with repeal of helmet laws, MU study finds
8. Increased Heart Risk Seen for Retired NFL Players
9. Smokers at Increased Risk of Aneurysm Recurrence
10. Mayo Clinic finds retired NFL players at increased risk for heart problems
11. Kaiser Permanente Study Shows That a Larger Abdomen in Midlife Increases Risk of Dementia
Post Your Comments:
(Date:6/25/2016)... TX (PRWEB) , ... June 25, 2016 , ... ... the United States, named Dr. Sesan Ogunleye, as the Medical Director of its new ... the facility Medical Director of our new Mesquite location,” said Dr. James M. Muzzarelli, ...
(Date:6/25/2016)... ... 2016 , ... On Friday, June 10, Van Mitchell, Secretary of the Maryland ... iHire in recognition of their exemplary accomplishments in worksite health promotion. , The Wellness ... & Wellness Symposium at the BWI Marriott in Linthicum Heights. iHire was one of ...
(Date:6/24/2016)... ... , ... Those who have experienced traumatic events may suffer from a complex ... as drug or alcohol abuse, as a coping mechanism. To avoid this pain and ... a traumatic event. , Trauma sufferers tend to feel a range of emotions, from ...
(Date:6/24/2016)... Texas (PRWEB) , ... June 24, 2016 , ... ... International Conference and Scientific Sessions in Dallas that it will receive two significant ... of the grants came as PHA marked its 25th anniversary by recognizing patients, ...
(Date:6/24/2016)... ... June 24, 2016 , ... Comfort Keepers® of San Diego, CA is excited ... To Recovery® program to drive cancer patients to and from their cancer treatments. ... highest quality of life and ongoing independence. Getting to and from medical treatments ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , , , WHEN: ... , , , , LOCATION: , , , Online, with ... , EXPERT PANELISTS:  , , , Frost & Sullivan,s Global Vice ... Senior Industry Analyst, Divyaa Ravishankar and Unmesh Lal, Program Manager , ... industry is witnessing an exceptional era. Several new demand spaces, such ...
(Date:6/23/2016)... PRINCETON, N.J. , June 23, 2016  Guerbet ... of Premier Inc.,s Supplier Horizon Award . ... this year, Guerbet was recognized for its support of ... value creation through clinical excellence, and commitment to lower ... delighted to receive this recognition of our outstanding customer ...
(Date:6/23/2016)... 23, 2016 The Biotechnology industry ... to present great opportunities to investors. assesses the ... Corp. (NYSE: XON ), Vertex Pharmaceuticals Inc. ... ARNA ), and Regeneron Pharmaceuticals Inc. (NASDAQ: ... and receive your complimentary trade alerts at: ...
Breaking Medicine Technology: