HPV infection may be linked to poor head and neck cancer survival rates in African Americans

Source: www.aacr.org Author: staff American Association for Cancer Research Hosts Press Conference on New Study A groundbreaking study in Cancer Prevention Research, a journal of the American Association for Cancer Research, suggests that having the human papillomavirus (HPV) improves survival in squamous cell carcinoma of the head and neck. Furthermore, African Americans had far less HPV infection than whites, which led to worse survival. "There is currently no consensus on why blacks fare worse with squamous cell carcinoma of the head and neck than whites, but this is the first clue that it may be biologic rather than related to issues of access, insurance or provider attitudes," said senior author Kevin Cullen, M.D., director of the University of Maryland Marlene and Stewart Greenebaum Cancer Center and professor of medicine at the University of Maryland School of Medicine. Cullen's research showed that median overall survival was more than threefold higher for whites (70.6 months) than for African Americans (20.9 months) who were treated with chemotherapy and radiation. When the researchers examined patients by HPV status, they found that HPV-negative patients had a median survival of 26.6 months, while the survival rate for HPV-positive patients could not be calculated because most were still alive. Overall, 4 percent of African American patients and 34 percent of white patients were HPV positive. Cullen said the survival difference was entirely due to HPV status, as survival rates were similar among HPV-negative patients. Scott Lippman, M.D., chair of the Department of Clinical Cancer Prevention at the [...]

2011-01-21T06:28:27-07:00January, 2011|Oral Cancer News|
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How protein made by HPV thwarts protective human protein, causing malignancy

Source: American Society for Biochemistry and Molecular Biology BETHESDA, MD., Jan. 11, 2011 – An international team of researchers is reporting that it has uncovered new information about human papilloma virus that one day may aid in the development of drugs to eliminate the cervical-cancer-causing infection. Led by researcher Per Jemth of Uppsala University in Sweden, the collaborators from four institutions detail in the Journal of Biological Chemistry how an offensive protein generated by the sexually transmitted virus handicaps a defensive protein made by the human body. Co-author Neil Ferguson, a biophysicist at University College Dublin, says: "It has proved difficult to stem the proliferation of many viruses using conventional drug discovery. Inhibitors of protein-protein interactions, as in HPV's case, are potentially potent ways to perturb viral infections." There are almost 200 strains of HPV, dozens of which are transmitted through genital contact, and about half of sexually active people have had one or more infections. The immune system eliminates the virus within two years in about 90 percent of cases, according to the Centers for Disease Control and Prevention in Atlanta, but it lingers for many years in a minority of cases. Some strains result in no visible symptoms, others cause genital warts and still others cause cancer. "Infection by high-risk human papilloma viruses is causing as many as half a million cases of cervical cancer and more than 200,000 deaths among women per year, making it one of the most common forms of cancer," Jemth emphasized. For the [...]

2011-01-17T21:36:34-07:00January, 2011|Oral Cancer News|
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Henry Schein Dental selected as exclusive distributor of VELscope Vx System in North America

Source: www.prnewswire.com Author: press release LED Dental announced today that Henry Schein Dental will be the exclusive distributor of its revolutionary new VELscope Vx Enhanced Oral Assessment system in North America. Henry Schein Dental is the U.S. Dental business of Henry Schein, Inc. (Nasdaq: HSIC), the largest provider of health care products and services to office-based practitioners. In 2006 LED Dental introduced the first generation VELscope system, which was the first to employ fluorescence visualization to help dental practitioners detect oral cancer and other forms of oral disease. The VELscope system was also the first to receive FDA and Health Canada clearance to help clinicians detect cancerous and precancerous lesions that might not be apparent to the naked eye, and to help surgeons determine the appropriate surgical margin when excision of abnormal tissue is indicated. Since then, over 6,000 VELscope systems around the world have been used to conduct over 10 million oral health exams, which is more than any other oral disease detection technology. The VELscope Vx system is the latest and most advanced generation of VELscope technology. While retaining all of the capabilities of prior generations, its cordless design provides significantly greater portability and convenience. Moreover, a price of less than half the level of prior generations makes it feasible for many practices to have one in two or more operatories. In addition, a reimbursement code has been approved for this procedure, and is honored by many insurance companies. "As the world leader in oral disease detection, it [...]

2011-01-06T19:04:11-07:00January, 2011|Oral Cancer News|
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HPV: To test or not to test

Source: www.rdhmag.com Author: Nancy W. Burkhart, RDH, EdD The dental practitioner has a responsibility to examine and assess the oral tissue status of all patients. Usually, we are happy to report that the tissue is healthy and no further treatment is necessary. Ethically, our role in assessment is both an understood practice as well as a legal one each time we interact with our patients. Within your practice, what is the expected role in assessing and relaying advice/recommendations to our patients? Do we rely strictly on scientific evidence with evidence-based protocol? Do we trust the developers/promoters of dental products to provide information to us? Do we relay personal opinion from colleagues, or do we reject opinion-based information? Do we search the scientific literature for current information, or call our colleagues and company representatives and obtain a consensus of what the best options may be for dissemination of information? We have all been in these situations. With busy practices, it is very time consuming to sit down and evaluate all the literature. Anyone who has been faced with a medical decision for a loved one or ourselves may actually feel exhausted while trying to sort through all of the options, treatments, and advice – some of which may even be at odds within specific group specialties in the way treatment is rendered. It can be very daunting, draining us both mentally and physically. So how do we approach this dilemma? For some time, we have known about the detrimental [...]

2011-01-05T12:42:31-07:00January, 2011|OCF In The News, Oral Cancer News|
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A cancer vaccine is born

Source: www.rochester.edu Author: Corydon Ireland Room 3-5135 at the Medical Center looks like a hundred other cubbyholes of basic science. A gray metal door decorated with the obligatory cartoon leads into a space the size of a motel room. White lab coats drape on wire hangers. Plain shelves, a desk, and a computer surround a breast-high bench arrayed with instrumentation. The paint scheme: early dorm room. “The posters are to cover the holes in the walls,” jokes William Bonnez, an associate professor of medicine and a veteran researcher who says not much has changed inside the room in a quarter century. But this is no ordinary workspace, and some day it may merit a plaque. Here, starting more than two decades ago, Bonnez and University colleagues Richard Reichman, a professor of medicine, and Robert Rose ’94M (PhD), an associate professor of medicine, developed the key technology behind two vaccines that may eliminate cervical cancer, a disease that each year kills 250,000 women internationally, including 4,500 Americans. One vaccine using the Rochester technology is Gardasil, developed by pharmaceutical giant Merck, that’s expected to be on the market some time this year. Another candidate is Cervarix, developed by GlaxoSmithKline, that could be ready by 2008. Gardasil “is a phenomenal breakthrough,” Gloria A. Bachmann told Newsday last fall when results of the final trial for the vaccine were released. She’s director of the Women’s Health Institute at the Robert Wood Johnson Medical School in New Jersey and was not involved with the Rochester [...]

2011-01-04T20:18:41-07:00January, 2011|Oral Cancer News|
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Second primary cancers after an index head & neck cancer: subsite-specific trends in the era of hpv–associated oropharyngeal cancer

Source: American Society of Clinical Oncology Authors: Luc G.T. Morris, Andrew G. Sikora, Snehal G. Patel, Richard B. Hayes and Ian Ganly Abstract Purpose Patients with head and neck squamous cell carcinoma (HNSCC) are at elevated risk of second primary malignancies (SPM), most commonly of the head and neck (HN), lung, and esophagus. Our objectives were to identify HNSCC subsite-specific differences in SPM risk and distribution and to describe trends in risk over 3 decades, before and during the era of human papillomavirus (HPV) –associated oropharyngeal SCC. Methods Population-based cohort study of 75,087 patients with HNSCC in the Surveillance, Epidemiology, and End Results (SEER) program. SPM risk was quantified by using standardized incidence ratios (SIRs), excess absolute risk (EAR) per 10,000 person-years at risk (PYR), and number needed to observe. Trends in SPM risk were analyzed by using joinpoint log-linear regression. Results In patients with HNSCC, the SIR of second primary solid tumor was 2.2 (95% CI, 2.1 to 2.2), and the EAR was 167.7 cancers per 10,000 PYR. The risk of SPM was highest for hypopharyngeal SCC (SIR, 3.5; EAR, 307.1 per 10,000 PYR) and lowest for laryngeal SCC (SIR, 1.9; EAR, 147.8 per 10,000 PYR). The most common SPM site for patients with oral cavity and oropharynx SCC was HN; for patients with laryngeal and hypopharyngeal cancer, it was the lung. Since 1991, SPM risk has decreased significantly among patients with oropharyngeal SCC (annual percentage change in EAR, −4.6%; P = .03). Conclusion In patients with HNSCC, the risk and distribution of SPM differ [...]

2011-01-03T19:06:39-07:00January, 2011|Oral Cancer News|
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Is oral sex safe?

Source: BBC Three Author: staff Darren was diagnosed with orophyrangeal cancer, a rare form of mouth cancer at the age of only 31. But that wasn't the only shocking news that he had to deal with. Most oral cancers are caused by smoking or drinking but Darren's cancer was caused by the Human Papillomavirus (HPV) which is sexually transmitted. Darren had caught it through having oral sex. And he's not alone. New research shows that there has been a dramatic increase in the number of HPV-related oral cancers amongst young people. Actress Jaime Winstone sets out to discover why the statistics are rising and whether anything can be done to stop this trend. Having met Darren, Jaime wants to know more. She's sadly got an intimate relationship with cancer as filming began for this programme, her close friend Paul, a DJ, died from pancreatic cancer aged only 26. Whilst his cancer wasn't preventable, Darren's was. HPV is recognised as the cause of cervical cancer in women and so two years ago the Government introduced a national vaccination programme for teenage girls. But if a vaccine exists, why isn't it also given to boys to protect them from developing HPV-related cancers? Although this oral cancer is still relatively rare, the HP virus is common, with an estimated 80% of adults having it, without any symptoms, during their lives. Jaime is a woman with a mission to understand and her journey takes her to meet Dr Margaret Stanley, a world expert on [...]

2010-12-26T08:21:02-07:00December, 2010|Oral Cancer News|
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Michael Douglas Fights Oral Cancer

Source: The Science of Dentistry Actor Michael Douglas‘ recent revelation that he has stage IV oral cancer has highlighted the growing incidence of oral cancer, and experts say dentists can help stem the alarming increase of the disease by checking for it during routine examinations.The actor’s cancer includes a walnut-sized tumor at the base of his tongue, and he will require radiation therapy, chemotherapy, and surgery. Douglas says his doctors told him he has an 80% survival rate if it hasn’t spread to his lymph nodes. While tobacco was the prime cause of oral cancer in the past, recent studies have attributed the steady increase of the disease to the human papillomavirus (HPV). HPV are common viruses that cause warts. There are approximately 130 versions of HPV but only nine cause cancers, and the HPV16 version causes almost half of the oral cancers in the U.S., said Brian Hill, executive director of the Oral Cancer Foundation. “Tobacco is no longer the only bad guy,” he told DrBicuspid.com. “HPV16 is increasing in incidence as the causative etiology, and if it continues on this trend line, it will replace tobacco as the primary cause of oral cancers.” Dentists can play a key role in catching the disease in its early stages if they check for it during examinations.  Most Americans have never even heard of oral cancer, but it’s not as rare or uncommon as people would like to think it is. This is why an opportunistic screening by the dental community [...]

2010-12-13T15:13:27-07:00December, 2010|OCF In The News, Oral Cancer News|
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New Discovery May Offer Cure for Human Papillomavirus (HPV)

MONMOUTH JUNCTION, N.J., Nov. 29, 2010 /PRNewswire-FirstCall/ --Tamir Biotechnology, Inc. (Pink Sheets: ACEL) (formerly Alfacell Corporation) announced today that scientists supported by the National Institute of Allergy and Infectious Diseases (NIAID) reported test results confirming two of our lead compounds showed excellent in vitro antiviral activity and no cellular toxicity at dose levels tested for Human Papillomavirus (HPV). Testing was performed using the HPV 11 strain, which along with HPV type 6, is responsible for ninety percent of genital or anal warts. According to the scientist performing the test, the results were among the top one to two percent seen by the researcher for testing of HPV type 11. The report states the following: "Excellent antiviral activity and no cellular toxicity at doses tested." Within the last several months, we have reported significant results for our compounds against Dengue Fever, Yellow Fever, SARS, CMV, and now HPV. We are on the cusp of building an impressive antiviral portfolio that will be targeting viruses where there is currently an unmet need.  Besides the fact that our drugs have shown significant antiviral activity against the viruses mentioned above, equally impressive is the fact that very low concentrations of our drugs were needed in order to show this significant antiviral activity. It is important to realize that Onconase®, our lead compound, has been in clinical studies for other oncology indications and has proven itself to be well tolerated in over 1,000 patients treated to date.  We cannot stress enough how significant our drug [...]

2010-12-06T11:50:03-07:00December, 2010|Oral Cancer News|
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Detection of human papilloma virus (HPV) in oral mucosa of women with cervical lesions and their relation to oral sex practices

Source: 7thspace.com Authors: Luis Sanchez-Vargas et al Previous studies have either investigated the relationship of HPV with oral cancer or the prevalence of HPV on the oral cavity. The purpose of this investigation was to study the prevalence of HPV in oral cavity of women with oral sex practices and cervical lesions. Methods: Forty six (46) non-smokers and non-alcoholic patients attended the "Clinica de Displasias"of "Ciudad Juarez"were sampled. This population had a CIN (cervical intraepithelial neoplasia) diagnosis sometime between the previous six months. On previous consent they filled out a questionnaire related to their oral sex practices. Afterwards one swab from cheeks and another from palate/gum were taken; PCR (polymerase chain reaction) was used to determine generic HPV, HPV16 and HPV18. Results: Seventy two percent (72%) of the patients stated to have oral sex practices regularly which all of them were positive to HPV either in oral mucus, palate/gum or both. The total of the given results showed that 35% had HPV16; among those distributed in 26% with regular oral sex practices and 9% stated as never practiced oral sex. An association was found between oral HPV16 positivity and progression to CIN advanced lesions. On the other hand HPV18 was not detected. The frequency of HPV16 was higher in buccal mucosa (23%) versus palate/gum (16%). Conclusions: This study suggests that buccal HPV16 infection is associated with CIN progression. Source: Infectious Agents and Cancer 2010, 5:25 Authors: Luis Sanchez-Vargas, Cecilia Diaz-Hernandez, Alejandro Martinez-Martinez

2010-12-05T17:44:18-07:00December, 2010|Oral Cancer News|
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