2010 – Page 37 – Oral Cancer News

Study evaluating clinical performance of Cervista(R) HPV HR presented at AOGIN

Source: www.prnewswire.com Author: press release Hologic, Inc. (Hologic or the Company), a leading developer, manufacturer and supplier of premium diagnostics, medical imaging systems and surgical products dedicated to serving the healthcare needs of women, today announced that interim data from the first large-scale independent evaluation of clinical performance of Cervista® HPV HR compared to Hybrid Capture 2 (hc2), were presented at the 4th Biennial Meeting of AOGIN (Asia-Oceanic Research Organization in Genital Infection and Neoplasia) in New Delhi, India on March 26-28, 2010. Cervista HPV HR is a diagnostic test for the detection of 14 high-risk human papillomavirus (HPV) types. The study, SHENCCAST II, is a major cervical cancer screening trial including more than 10,000 women that is being conducted in China to evaluate the performance of HPV assays, among other endpoints. A preliminary analysis of data from 5,043 patients showed the Cervista HPV HR test performed as follows: Overall HPV positivity for this cohort was 12.2 percent for the Cervista HPV HR test and 14.6 percent with the hc2 test. For histologically confirmed CIN 2 or more severe lesions, the Cervista HPV HR test showed a sensitivity of 90.7 percent and a specificity of 90.2 percent. For the hc2 test, sensitivity and specificity were 94.7 percent and 87.9 percent, respectively. While the Cervista HPV HR test demonstrated improved specificity and the hc2 test yielded higher sensitivity, a statistical analysis of overall test accuracy that plots sensitivity and specificity found the two methods were clinically equivalent (area under the ROC [...]

Oral Cancer Foundation News Team - A2010-03-29T20:21:43-07:00March, 2010|Oral Cancer News|

Oropharyngeal carcinoma related to human papillomavirus

Source: BMJ 2010;340:c1439 Author: Staff Incidence is increasing rapidly, with implications for prognosis and policy Head and neck cancer is the sixth most common cancer, with about 640,000 new cases each year worldwide. Despite an overall marginal decline in the incidence of most head and neck cancers in recent years,1 the incidence of oropharyngeal squamous cell carcinoma has increased greatly, especially in the developed world. In the United States, the incidence of oropharyngeal squamous cell carcinoma increased by 22% from 1.53 per 100,000 to 1.87 per 100,000 between 1999 and 2006, after showing no change between 1975 and 1999. 1 The United Kingdom has seen a 51% increase in oral and oropharyngeal squamous cell carcinoma in men from seven per 100,000 to 11 per 100,000 between 1989 and 2006. 2 The increase in incidence of oropharyngeal squamous cell carcinoma seems to be accounted for by a rise in human papillomavirus (HPV) related oropharyngeal carcinoma. A recent retrospective study showed a progressive proportional increase in the detection of HPV in biopsies taken to diagnose oropharyngeal squamous cell carcinoma in the Swedish county of Stockholm over the past three decades (23.3% in 1970s, 29% in 1980s, 57% in 1990s, 68% between 2000 and 2002, 77% between 2003 and 2005, and 93% between 2006 and 2007).3 Similarly, HPV related oropharyngeal carcinoma has been reported in 60-80% of recent oropharyngeal biopsy samples in studies conducted in the US, compared with 40% in the previous decade.4 More research is needed to establish the incidence of HPV related oropharyngeal carcinoma in African, Asian, and South American countries. HPV related oropharyngeal carcinoma seems to be a new and distinct [...]

Charlotte Parker2010-03-26T16:16:09-07:00March, 2010|Oral Cancer News|

HPV-related cancer leap to have big impact on health services

Source: www.dentistry.co.uk Author: staff The rapid rise in cases of squamous cell carcinoma related to human papillomavirus (HPV) infection has serious implications for health services around the world, warn researchers. They suggest that sexual transmission of HPV might be the reason for the rise. Head and neck cancer is the sixth most common cancer, with about 640,000 new cases each year worldwide. Despite an overall marginal decline in most head and neck cancers in recent years, the level of oropharyngeal squamous cell carcinoma (OSCC) has increased greatly, especially in the developed world. In the US, cases increased by 22% between 1999 and 2006, after showing no change between 1975 and 1999, while the UK has seen a 51% increase in oral and oropharyngeal cancer in men between 1989 and 2006. This increase seems to be accounted for by a rise in HPV-related tumours, say the authors, led by Hisham Mehanna at the Institute of Head and Neck Studies and Education, University Hospital, Coventry. A recent study showed a 70% increase in the detection of HPV in biopsies taken to diagnose oropharyngeal carcinoma in Stockholm since the 1970s. HPV-related oropharyngeal carcinoma has also been reported in 60-80% of recent biopsy samples in studies conducted in the US, compared with 40% in the previous decade. HPV-related oropharyngeal carcinoma seems to be a new and distinct disease entity, explain the authors. It has a better prognosis than non-HPV related oropharyngeal carcinoma, particularly in non-smokers, but the reason for this improved survival is not [...]

Oral Cancer Foundation News Team - A2010-03-24T14:33:53-07:00March, 2010|Oral Cancer News|

Time-released muco-adhesive patch more effective than oral rinse for xerostomia

Source: www.news-medical.net/news Author: press release A newly developed time-released muco-adhesive patch for treating oral health conditions, including the widespread condition of dry mouth (xerostomia), has been shown to be more effective than a leading oral rinse, according to a newly-published study. As increasing segments of the population consume more medications (one of the leading causes of dry mouth), the results of this study could potentially help provide relief for millions of Americans. Chronic dry mouth impacts the quality of life and for some, can be debilitating. Published in the March 2010 issue of Quintessence International, the study found that chronic dry mouth sufferers can now get a statistically significant reduction of mouth dryness from a new time-released muco-adhesive patch (OraMoist Dry Mouth Patch), compared with the leading oral rinse which has been on the market for nearly two decades. Overall, patients with xerostomia treated with the muco-adhesive patch reported a statistically significant reduction in mouth dryness sensation with elevated salivary flow rate (150%) after just 30 minutes, which was considered clinically outstanding by the study authors, since the product does not contain any cholinergic agonist, a drug often used to treat dry mouth. OraMoist, a new time-released, non-drug formula, not only outperformed the mouthwash, one of the most often used delivery formats for treating dry mouth, but unlike dry mouth sprays, rinses or gels, which need to be applied frequently – sometimes every 20 minutes – OraMoist works to increase moisture and help restore a healthy oral environment for hours [...]

Oral Cancer Foundation News Team - A2010-03-23T18:26:50-07:00March, 2010|Oral Cancer News|

Public awareness level of oral cancer in a group of dental patients

Source: J Contemp Dent Pract, January 1, 2010; 11(2): E049-56 Authors: I Peker and MT Alkurt Aim: The aim of this study was to evaluate levels of public awareness and knowledge about early signs and risk factors of oral cancer among a group of dental patients in Turkey. Methods and materials: This study included 1022 participants. Sociodemographic information of patients was obtained. A questionnaire about awareness and knowledge of oral cancer and early signs and risk factors related to the disease was completed by two examiners. Data were statistically analyzed with descriptive analyses, crosstabs and chi-square tests. Results: In total 60.7% of participants had never heard of oral cancer. While 79.2% of the participants were unaware of the early signs related to oral cancer, 29.9% of them were unaware of risk factors of the disease. There were no statistically significant differences between age, gender, and education levels for awareness of risk factors. Statistically significant differences were found between age and gender and no statistically significant difference was found between education levels for awareness of early signs. Conclusion: This study showed that public awareness and knowledge about oral cancer were insufficient in Turkey. Clinical significance: There is an important need to inform the public about oral cancer, its risk factors, and early signs of the disease. Media campaigns can be useful to raise oral cancer awareness.

Oral Cancer Foundation News Team - A2010-03-23T18:21:56-07:00March, 2010|Oral Cancer News|

Fluoroscopically guided balloon dilation for pharyngoesophageal stricture after radiation therapy in patients with head and neck cancer

Source: AJR 2010; 194:1131-1136 Authors: Hong-Tao Hu et al. Objective: The purpose of this article is to assess the safety and long-term efficacy of fluoroscopically guided balloon dilation for pharyngoesophageal strictures after radiation therapy in patients with head and neck cancers. Materials and methods: From April 1997 to February 2009, fluoroscopically guided balloon dilation was performed in 17 patients with pharyngoesophageal strictures caused by radiation therapy. Technical success, clinical success (decrease of at least one grade in dysphagia score and good contrast passage on 1-month follow-up esophagogram), recurrence of dysphagia, and complications related to the procedure were retrospectively evaluated. Results: All 17 patients underwent 41 balloon dilation procedures, with each patient undergoing one to seven procedures (mean, 2.4 procedures). The technical success rate was 100%, and clinical success was achieved in 64.7% (11/17) of the patients. Five patients (29.4%) showed no recurrence of dysphagia after one session of balloon dilation. Of 12 patients (70.6%) with recurrence of dysphagia, 10 underwent repeat balloon dilation and two underwent gastrostomy after the first session of balloon dilation. The maximum balloon diameters were 15 mm (n = 22), 20 mm (n = 16), and 25 mm (n = 3). As minor complications, three cases of type 1 esophageal rupture occurred in two patients (11.8%). There were no major complications. Conclusion: Although the recurrence rate was high with repeat balloon dilation, fluoroscopically guided balloon dilation seems to be a simple and safe primary treatment technique for pharyngoesophageal stricture due to radiation therapy in patients with [...]

Oral Cancer Foundation News Team - A2010-03-23T18:17:56-07:00March, 2010|Oral Cancer News|

Experts warn that new “smokeless” tobacco products are still dangerous

Source: FOX21News Author: Tracee Tolentino DULUTH - The tobacco industry is offering new products and finding new ways to attract and keep customers. However, health advocates say the new products are just as dangerous, and the customers are getting younger and younger. "Most 6-year-olds, if you queried them, they would know who Joe Camel is," said Michele Hughes of the Douglas County Health Department. Now, with the introduction of new smokeless tobacco alternatives, there are new ways that young adults can get hooked to nicotine. “They’re out there as the ‘good guy’ or look, these aren't quite as harmful, but indeed these are deadly products that lead to a lifetime of addiction and this is an industry that is out for our youth,” said Pat McKone of the American Lung Association of Minnesota. Many new tobacco products are more appealing to younger customers, with bright packaging, candy flavors and the illusion of a "safer" nicotine delivery source. McKone warns that these products are tricks. The alternative products include forms of snuff, chewing tobacco, e-cigarettes or snus, which are spit-less tobacco pouches that users place under their upper lip. "These products are to enable people to keep using nicotine and nicotine delivery systems until they can get out to smoke," said McKone. The popularity of these products has increased as more states have adopted smoking bans for workplaces and businesses. Minnesota’s ban is already in place and in July, Wisconsin will follow suit. “80% of current adult smokers started between the [...]

Charlotte Parker2010-04-19T22:29:13-07:00March, 2010|Oral Cancer News|

Busting the myth of the cervical cancer vaccine

Source: Temple University Press Editorial by: Gkramer Adina Nack, author of Damaged Goods? Women Living with Incurable Sexually Transmitted Diseases, draws on her expertise as a sexual health researcher to discuss the impact of human papillomavirus (HPV) on men and the need for gender-neutral STD vaccines. When I wrote my book, Damaged Goods? I focused on how living with contagious, stigmatizing, medically incurable (though highly treatable) infections transformed women’s lives – medically, socially and psychologically. I had included a discussion of the Gardasil vaccine, which had received FDA-approval and CDC recommendation for ‘routine’ use in girls and women (ages 9 to 26) back in 2006, and I had articulated some of my concerns about the delayed testing and approval process for ‘male’ Gardasil. A family of viruses, HPV is an ‘equal opportunity infector,’ so why have HPV vaccines not been equally accessible for men as well as women? In a recent interview on Huffington Post, several blog posts of my own, and my new feature article, “Why Men’s Health Is a Feminist Issue” (Ms. Magazine,Winter 2010), I investigate the substantial public health costs that result from HPV vaccines, such as Gardasil, not having been originally developed, tested and approved as gender-neutral vaccines. The narrow and inaccurate marketing of Gardasil as a female-only, “cervical cancer” vaccine has distracted us from public discourse about this family of sexually transmitted viruses that are not only a U.S. epidemic but also a global pandemic. In the U.S., HPV is estimated to affect 75% of adults and certain strains are known [...]

Charlotte Parker2010-03-23T22:33:02-07:00March, 2010|Oral Cancer News|

Mike Strantz remembered for visions

Source: Thepilot.com Author: Howard Ward He was a commanding figure. He wore his hair long, his mustache bushy, and he was a big guy, ruggedly handsome. Mike Strantz didn’t look like a man who would go easily, and he didn’t. He fought the cancer with the same determination that he approached a property that dared him to build a golf course on it. I was fortunate enough to do two interviews with Strantz, shortly after the opening of Tobacco Road in Sanford, one of his architectural triumphs, and again while he was applying the finishing touches to Tot Hill, an amazing course laid out on a challenging piece of land in Asheboro. Both of those golf courses tell you a lot about Mike Strantz, the golf course designer. But his widow, the lovely Heidi, can tell you a lot more about Mike Strantz, the husband and father of two beautiful daughters. Heidi Strantz talked about her late husband and the love of her life during a meeting of the Carolinas Golf Reporters and the South Carolina Golf Ratings Panel last weekend at Seabrook Island Resort, and it was both inspirational and moving. “I thought I was marrying a golf course superintendent when I married Mike,” she recalled. “He had just graduated from the turfgrass school at Michigan, and we thought he would make a career of that.” Mike definitely knew how to make grass grow, and he enjoyed working the land. He was on the scene at Inverness during the [...]

Charlotte Parker2010-03-23T14:15:57-07:00March, 2010|Oral Cancer News|

Epidermal growth factor receptor regulates beta-catenin location, stability, and transcriptional activity in oral cancer

Source: 7thspace.com/headlines Author: staff Many cancerous cells accumulate beta-catenin in the nucleus. We examined the role of epidermal growth factor receptor (EGFR) signaling in the accumulation of beta-catenin in the nuclei of oral cancer cells. Results: We used two strains of cultured oral cancer cells, one with reduced EGFR expression (OECM1 cells) and one with elevated EGFR expression (SAS cells), and measured downstream effects, such as phosphorylation of beta-catenin and GSK-3beta, association of beta-catenin with E-cadherin, and target gene regulation. We also studied the expression of EGFR, beta-catenin, and cyclin D1 in 112 samples of oral cancer by immunostaining. Activation of EGFR signaling increased the amount of beta-catenin in the nucleus and decreased the amount in the membranes. EGF treatment increased phosphorylation ofbeta-catenin (tyrosine) and GSK-3beta(Ser-9), resulting in a loss of beta-catenin association with E-cadherin. TOP-FLASH and FOP-FLASH reporter assays demonstrated that the EGFR signal regulates beta-catenin transcriptional activity and mediates cyclin D1 expression. Chromatin immunoprecipitation experiments indicated that the EGFR signal affects chromatin architecture at the regulatory element of cyclin D1, and that the CBP, HDAC1, and Suv39h1 histone/chromatin remodeling complex is involved in this process. Immunostaining showed a significant association between EGFR expression and aberrant accumulation of beta-catenin in oral cancer. Conclusions: EGFR signaling regulates beta-catenin localization and stability, target gene expression, and tumor progression in oral cancer. Moreover, our data suggest that aberrant accumulation of beta-catenin under EGFR activation is a malignancy marker of oral cancer. Author: Chien-Hsing LeeHsing-Wen HungPei-Hsin HungYi-Shing Shieh Source: Molecular Cancer 2010, 9:64

Oral Cancer Foundation News Team - A2010-03-22T08:59:51-07:00March, 2010|Oral Cancer News|