Oral Cancer News – Page 233 – The Oral Cancer Foundation News Archive

FDA analysis finds toxic substances in electronic cigarettes

Source: www.rwjf.org/publichealth Author: staff A preliminary analysis by the Food and Drug Administration (FDA) indicates that electronic cigarettes contain traces of toxic substances and carcinogens, contradicting manufacturers' claims that the products are safe alternatives to tobacco, the New York Times reports. According to manufacturers, the battery-powered devices, which produce a vapor that users inhale, contain little more than water, nicotine and propylene glycol, which is used in theatrical performances to create artificial smoke. However, an FDA analysis of the ingredients in two leading brands of electronic cigarettes found that some had detectable levels of nitrosamines, tobacco-specific compounds known to cause cancer. In addition, one Smoking Everywhere cartridge contained diethlyene glycol, a common ingredient in antifreeze that contributed to the death of hundreds of individuals worldwide after it was incorrectly used as a substitute for glycerin in toothpaste. According to the FDA's principal commissioner, the effect of inhaling diethlyene glycol and other carcinogens through electronic cigarettes on the human body remains unknown. The study also highlighted several quality control issues with the electronic cigarettes, which are manufactured in China. For example, nicotine levels varied among cartridges with labels that claimed to contain identical amounts of nicotine, and some cartridges claiming to be nicotine free did contain nicotine. Calling the products drug delivery devices, the FDA says electronic cigarettes should not be allowed in the United States and has rejected approximately 50 shipments at the border since summer 2008. However, vendors in malls nationwide and online continue to sell electronic cigarettes, which [...]

Oral Cancer Foundation News Team - A2010-07-20T06:49:17-07:00July, 2010|Oral Cancer News|

FDG-PET staging and importance of lymph node SUV in head and neck cancer

Source: 7thspace.com Author: staff Objectives: The role of positron emission tomography (PET) with fluoro-deoxy-glucose (FDG) in the staging of head and neck cancer (HNC) is unclear. The NCCN guidelines do not recommend FDG-PET as a part of standard workup. The purpose of this report is to examine the role of FDG-PET imaging in altering management and providing prognostic information for HNC. Methods: Retrospective review of HNC patients who had a staging FDG-PET scan performed at either Thomas Jefferson University or University of Kansas Medical Center between the years 2001 and 2007. A total of 212 PET scans were performed in patients who went on to receive radiotherapy. Results: The median follow-up time for all patients was 469 days. The PPV and NPV of PET imaging to correctly identify lymph node status was 94% and 89% respectively. Lymph nodes with extracapsular extension (ECE) had higher SUVs than nodes without ECE, 11.0 vs. 5.0 (p <0.0007). Maximum SUV for the primary tumor >8.0 was predictive of worse overall survival (p <0.045), while the SUV of the lymph nodes was predictive for distant recurrence at one year--with a mean SUV value of 10.4 for patients with distant failure vs. 7.0 without (p <0.05). Conclusions: FDG-PET staging in head and neck cancer has good positive and negative predictive values in determining lymph node status. The maximum SUV of the primary tumor is predictive of overall survival. This is the first report to find that the SUV of a lymph node is predictive for ECE [...]

Oral Cancer Foundation News Team - A2010-07-18T06:52:58-07:00July, 2010|Oral Cancer News|

HPV testing following excisional therapy for cervical neoplasia can identify high-risk patients: presented at IPC

Source: www.docguide.com Author: Louise Gagnon About one-quarter of women continue to have high-risk human papillomavirus (HPV) after excisional therapy for cervical intraepithelial neoplasia (CIN) 2/3, a study presented here at the 26th International Papillomavirus Conference (IPC) has found. Women with CIN are at increased risk for developing invasive cervical cancer, and persistent infection of high-risk HPV is a main risk factor for treatment failure, said Wendy Mei, BSc, MLT, the study's presenting investigator and clinical trials coordinator at the British Columbia Centre for Disease Control, Vancouver, British Columbia. HPV testing and Pap smear together are more sensitive than using Pap smear alone, noted Mei. "We wanted to evaluate the impact of implementing ASCCP [American Society for Colposcopy and Clinical Pathology] guidelines in British Columbia," Mei told attendees here at an oral presentation on July 7. "We also wanted to determine the genotype distribution of women with higher risk HPV to gain insight on vaccine and diagnostics evaluation." Researchers used ThinPrep to collect cervical brushings, instead of conventional Pap smear, to permit an aliquot to be tested to determine if the HPV types were high-risk using a DNA test. Mei and colleagues collected 1,007 specimens and found 25.4% (n = 256) were positive for high-risk HPV. They found HPV 16 in 29.7% of specimens and HPV 18 in 5.5% of specimens. "HPV 18 was lower than expected, but the treatment options are more effective for HPV 18," said Mei in an interview. Investigators found single and multiple high-risk HPV genotypes were [...]

Oral Cancer Foundation News Team - A2010-07-16T14:06:44-07:00July, 2010|Oral Cancer News|

Researchers study relationship of oral cancers and periodontal disease

Source: www.medicalnewstoday.com Author: staff During the 88th General Session & Exhibition of the International Association for Dental Research, in Barcelona, Spain, author J. Meyle, Justus Liebig University, Giessen, Germany, presented an abstract titled "P. gingivalis Infection and Immune Evasion of Oral Carcinomas." Meyle and his team are investigating the relationship of oral cancers and periodontal disease. They achieved results by infecting cell carcinoma cells SCC-25 with Porphyromonas gingivalis (P.g.) W83. After 48h the cells were stained with antibodies against human B7-H1, B7-DC and TLR4 and analysed by flow cytometry. RNA was extracted after 24h and gene expression of B7-H1, B7DC, TLR4, IFN-γ and IL-10 was quantified by real time PCR and analysed by the (2 triangles)CT method. Up-regulation of B7-H1 in host cells may contribute to the chronicity of inflammatory disorders which frequently precede the development of human cancers. B7-H1 expression was detected in the majority of human cancers and leads to anergy and apoptosis of activated T cells, which might enable tumors to evade the immune response. TLR4 signalling has been shown to induce B7-H1 in bladder cancer cells. P.g., a putative periodontal pathogen, is an etiologic agent of periodontitis and expresses a variety of virulence factors. In this study the expression of B7-H1 and B7-DC receptors and TLR4 on squamous cell carcinoma cells SCC-25 was analysed after infection with P.g. in vitro. The research concludes that P.g. is able to induce the expression of the immune regulating receptors B7-H1 and B7-DC in squamous cell carcinoma which may facilitate [...]

Oral Cancer Foundation News Team - A2010-07-16T13:09:40-07:00July, 2010|Oral Cancer News|

Compound discovery may lead to earlier oral cancer detection

Source: www.dentalplans.com Author: staff A biomarker found in the mouth may help dental care specialists diagnose patients with cancer of the mouth and gums at earlier stages, according to a study published in the web-based journal, PLoS ONE. One of the first signs of oral cancer is the development of white or red sores on the inside of the mouth, which commonly go untested because they are typically cancer-free. However, if cancerous lesions go untreated, the disease can progress to later stages. In an effort to improve oral cancer detection, a team of researchers conducted a series of tests, and discovered the hBD-3 biomarker, which improves immune system health in the mouth. The location of the compound is what has made these results important, as they were found in the lining of the mouth where cancerous cells begin to grow. Because they were able to discover where the hBD-3 biomarker develops, the investigators concluded that these findings could lead to the development of diagnostic equipment that could detect oral cancer sooner. "Using the biomarker to detect oral cancer holds potential for saving lives when the cancer is most curable. Annually some 10,000 people die from this cancer," said Ge Jin, assistant professor of biological sciences at the Case Western Reserve University School of Dental Medicine.

Oral Cancer Foundation News Team - A2010-07-14T21:09:32-07:00July, 2010|Oral Cancer News|

Which new tobacco products are scoring?

Source: CSP Author: Mitch Morrison OAK BROOK, Ill. -- Camel Snus continues to ride a wave of loyal national support as R.J. Reynolds extends its marketing focus to oral tobacco consumption. In an exclusive CSP-UBS tobacco survey, retailers praised Camel's Snus product as well as Camel Crush, the company's customizable cigarette that contains a small blue menthol capsule within the filter. "Camel Snus—extremely aggressive and the first to market in this new and growing category," a Virginia retailer said of the smokeless, spitless product. "'Fill the Fridge' is a good concept." Added a retailer from Iowa: "Snus continues to be a growth driver. Camel did a really good job out of the chute with its initial launch and now Marlboro has gotten into the game as well." Indeed, more than half of the 50-plus respondents cited the snus segment as a strong nascent player that is slowly gaining recognition and consumer acceptance. Another winner was Marlboro, which scored well with its Marlboro 72, Marlboro Special Blend and Copenhagen Wintergreen smokeless tobacco. "Marlboro Special Blend and 72s have done exceptionally well in our area with an attractive price," an Arkansas operator said. Others receiving praise included Liggett's private-label lines, Star Scientific's Stonewall spitless, Reynold's Natural American Spirit and the broader smokeless tobacco category. "Camel is doing a great job in building awareness for the Snus category," said UBS tobacco analyst Nik Modi. "PM USA had great traction with its Marlboro Special Blend, but we wonder how the brand will respond to [...]

Charlotte Parker2010-07-14T20:16:42-07:00July, 2010|Oral Cancer News|

Congress approves bill curbing internet tobacco sales in victory for kids and taxpayers

Source: Campaign for Tobacco-Free Kids Author: Matthew L. Myers Voting 387 to 25, the U.S. House of Representatives today gave final congressional approval to the Prevent All Cigarette Trafficking (PACT) Act, legislation to curtail the growing sales of tax-evading, low-cost cigarettes and other tobacco products over the Internet and through the mail. Passage of this legislation is a milestone in the fight to keep kids from smoking and prevent tax evasion that costs state and federal taxpayers billions each year. We applaud Rep. Anthony Weiner (D-NY), the chief House sponsor, and Sen. Herb Kohl (D-WI), the Senate sponsor, for their leadership and persistence in pursuing this legislation and winning its approval. The Senate unanimously approved the bill onMarch 11. We look forward to President Obama continuing his strong leadership on tobacco control by signing the PACT Act into law. Internet sales of tobacco products are a serious and growing problem that keeps prices down and smoking levels up. Such sales make it easier and cheaper for kids to buy cigarettes, facilitate tax evasion and cost federal and state governments billions in revenue. Many vendors that sell cigarettes and smokeless tobacco products over the Internet or through other mail-order sales do not pay applicable tobacco taxes and do not have sufficient safeguards to prevent sales to children, such as effective policies to verify a purchaser's age. The PACT Act will: Require Internet sellers to pay all federal, state, local or Tribal tobacco taxes and affix tax stamps before delivery to any customer; Mandate that the [...]

Charlotte Parker2010-07-14T20:16:19-07:00July, 2010|Oral Cancer News|

Trends in the incidence rates of tonsil and base of tongue cancer in England, 1985-2006

Source: Ann Royal Coll Surgery Engl. 2010 Jul 7 Authors: Reddy V, Cundall-Curry D, Bridger M. Abstract: INTRODUCTION The aim of this study was to investigate whether incidence rates of tonsil and base of tongue cancer in England are increasing using data from the UK cancer registry. SUBJECTS AND METHODS Cancer registrations for oral cavity and oropharynx cancer from 1985-2006 in England were obtained from the National Cancer Information Service. Population estimates were obtained from the Office for National Statistics. Age-adjusted incidence rates and age-specific incidence rates were calculated. The sexes were considered separately as incidence rates are known to differ significantly between men and women. Linear regression was performed to establish whether there was a relationship between incidence rates and time. RESULTS There has been an increase in all oral cavity and oropharyngeal cancer in the study period. Linear regression analysis suggests that approximately 90% of the variance in age-adjusted incidence rates for men and women for tonsil, base of tongue and other oral cavity cancer is explained by the passage of time. For other oropharyngeal cancer, the variance is 62% and 46% in men and women, respectively. The estimated annual percentage change from 1985 to 2006 in age-adjusted incidence rates for tonsil and base of tongue cancer is 5.7% and 6.7% for men, and 4.3% and 6.5% for women, respectively. CONCLUSIONS This study confirms a wide-spread clinical impression that there has been an increase in age-adjusted incidence rates, between 1985 and 2006, in all oral cavity cancer in England. [...]

Charlotte Parker2010-07-12T11:23:01-07:00July, 2010|Oral Cancer News|

Man wins £18k on tv game show after tongue cancer op

Source: www.thisisderbyshire.co.uk Author: staff For a man who had to learn how to talk again, there can be few greater tests than speaking on a TV game show beamed across the nation. But Maurice Paulson passed with flying colours – and won £18,000 and praise from Noel Edmonds in the process. The 81-year-old appeared on Channel 4's hit show Deal or No Deal having been taught how to speak again following an operation on his cancer-ridden tongue. Maurice said the show was great fun and that his appearance was a reward for the hard work Derby's doctors and nurses had put in to help him recover. Although he speaks with a rasp, every word is intelligible as long as he speaks slowly and enunciates. He said: "Noel said I was very brave for coming on. I didn't think so at the time – if people don't understand me now there's nothing I can do about it. The crowd were brilliant though. I won £18,000 and they all came down from their seats and hugged and congratulated me." Maurice, of Stenson Fields, was stunned when he was diagnosed with tongue cancer in 2004. He said: "I had gone for a check-up because my neck kept swelling up and then going back to normal again. It's not the sort of thing you imagine would be cancer. "They asked me if I drank or smoked. But I gave up smoking decades before and, despite being a landlord for three pubs in my time, [...]

Oral Cancer Foundation News Team - A2010-07-10T07:12:06-07:00July, 2010|Oral Cancer News|

A tough one to chew on: smokeless tobacco and teens

Source: Medscape Today Author: Mary E. Muscari, PhD, CPNP, APRN-BC, CFNS Introduction One would think that the mere image of a bulgy cheek spewing brown, foul-smelling goo would be more than enough to turn anyone, especially appearance-conscious teens, off of using smokeless tobacco (ST). But then, these media-savvy adolescents probably have discovered snus, a smoke- and spit-free tobacco. According to a recent article in Reuters,[1] the use of ST is on the rise among US teens, reversing a downward trend in tobacco product use by adolescents. The Reuters article cites comments made by Terry Pechacek, PhD, Associate Director for Science, Office on Smoking and Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention (CDC), in a report to a US Congressional Panel. Among his comments is the suggestion that ST-using Major League Baseball® (MLB) players may be influencing young men to take up the cancer-causing habit. In his report, Dr. Pechacek noted that "the recent increases in ST use by adolescent boys and young adult men and the increasing dual use of cigarettes and ST products may portend a leveling off or even a reversal in the decline in smoking, the perpetuation of nicotine dependence, and continuing high levels of tobacco-related disease and death in the country."[2] Given this grim outlook, healthcare professionals need to kick up their fight against teen tobacco use by increasing their focus on smokeless forms of tobacco. Smokeless Tobacco ST (also known as spit, plug dip, chaw, rack, spits, grizz, [...]

Charlotte Parker2010-07-10T06:34:38-07:00July, 2010|Oral Cancer News|