Tag Archives: virus

Vaccinating boys plays key role in HPV prevention

HPV has been linked to anal, penile and certain types of throat cancers in men. Since the virus is also responsible for various cancers in women, vaccinating boys will play a crucial role in reducing cancer rates across the sexes. "HPV is the single most common sexually transmitted infection," says Newman, Canada Research Chair in Health and Social Justice. …

Single men, smokers at higher risk for oral human papillomavirus infection

The study results appeared in the July issue of The Lancet. HPV infection is known to cause virtually all cervical cancers, most anal cancers and some genital cancers. It has recently been established as a cause of the majority of oropharyngeal cancers, a malignancy of the tonsils and base of tongue. HPV-related oropharyngeal cancer is rare, but rates have been increasing rapidly, especially among men…

Michael Douglas’ reveal: Can you get throat cancer from oral sex?

Michael Douglas made a shocking announcement on Sunday, maintaining that his throat cancer hadn’t been caused by drinking or smoking – but by having oral sex. “Without wanting to get too specific, this particular cancer is caused by HPV, which actually comes about from cunnilingus,” Douglas told The Guardian newspaper.  The 68-year-old actor also went on to speculate that the stress of his son Cameron’s incarceration might have helped trigger the cancer as well. While a connection between oral sex and cancer may seem bizarre, it is very possible that some oral cancers are the end result of intimate sexual contact. Rates of oral cancer – sometimes referred to as head and neck cancers – have been on the rise over the past decade.  While the main risk factors for oral cancers typically include drinking alcohol and smoking, around 25 percent of mouth and 35 percent of throat cancers are related to human papilloma virus (HPV) infection. “(HPV) is present within the fluids that are part of oral sexual behavior,” Dr. Marshall Posner, director of the head and neck oncology program at Mount Sinai Hospital in New York City, told FoxNews.com. “The vaginal fluids and semen will contain epithelial cells that have the virus on them and also free viral particles that can cause infection.” HPV cannot be transmitted through blood contact, but Posner said it may be possible to contract the virus from the direct contact of fluids through kissing. This can occur if an individual kisses someone who previously performed oral sex on someone else who had the virus. “If the virus is present in the oral pharynx and if it gets secreted in the saliva, then the saliva will contain potentially dangerous viral particles,” Posner said. There are more than 100 different types of HPV, and nearly everyone contracts some form of the virus in their youth.  Fortunately, the majority of HPV strains do not cause any symptoms, and in 90 percent of cases, the infection is naturally eradicated from the body within two years. However, some HPV types can cause genital warts, while others may lead to certain cancers in rare cases. HPV 16 and HPV 18 – which are sexually transmitted – are most closely associated with HPV-positive oropharyngeal cancer. According to Posner, 3 percent of adult males and 1 percent of adult females will have detectable HPV 16 in their saliva at any given moment in time.  However, just because HPV is detected in a sample of someone with oral cancer does not necessarily mean HPV caused the cancer.  According to the National Health Service in Britain, the virus becomes part of the pre-existing cancer cells’ genetic material, fostering the cells to grow. Oropharyngeal cancer symptoms include a lump in the back of the throat or mouth, pain in the ear or back of tongue, and difficulty swallowing. While the prognosis for HPV-negative oropharyngeal cancer is around 40 to 50 percent, the survival outcomes are generally better for HPV-positive cancers, ranging from 80 to 95 percent.  However, that prognosis is affected by drinking and smoking, which may have been a problem for Douglas. In the United States, HPV-related oropharyngeal cancer represents 60 percent of the total number of orapharyngeal cancer cases, which equal to about 15,000 per year.  Posner estimated that those cases will increase to 20,000 a year by the year 2015. While researchers cannot fully explain the rising rates of these cancers, one of the biggest risk factor for contracting HPV-positive oroharyngeal cancer includes having a high number of sexual partners, Posner said. “In smoking cigarettes and cancer, it doesn’t matter what brands you smoked, it matters how many you smoked,” Posner said.  “With HPV, it’s about the number of ‘brands’ you’ve been involved with. If you have numerous partners, you have a much higher risk of developing cancer. So (monogamous) people should go ahead and have the same intimate and personal relationship that they have with their partners and not be worried about it.” For those looking to protect themselves from contracting dangerous forms of HPV, practicing safe sex by using protection such as condoms and dental dams may help to diminish the spread of sexually transmitted diseases.  Posner also called for parents to get their children – including young boys –vaccinated against HPV. “I think people should make every effort to have children vaccinated, so I don’t have to treat this in the future,” Posner said.  I think it’s very important and to cure cancer we have to support research – it’s the best way we have to figure out how to cure this. Click to learn more about HPV from Mount Sinai Hospital.source : http://www.foxnews.com/health/2013/06/03/michael-douglass-reveal-can-get-throat-cancer-from-oral-sex/

To stop MERS, longer quarantines may be necessary

A detailed look at two cases of a deadly new respiratory virus called MERS suggests people who have the disease should be isolated for at least 12 days to avoid spreading it, doctors reported. The new germ, a respiratory infection, was first seen in the Middle East and so far has sickened more than 40 people worldwide, killing about half of them. In the report published online in the journal Lancet, French scientists said the first patient visited Dubai. He is thought to have caught MERS there before passing it onto the second patient, who had no travel history and with whom he shared a room for three days. Health officials have previously noted MERS can be spread among people if they are in close contact and clusters of the illness have been spotted in countries including Britain, Tunisia and Saudi Arabia. Experts aren't sure how humans are catching the virus but think it may originate in animals like bats or camels. In a speech on Monday in Geneva, the World Health Organization's Director-General, Dr. Margaret Chan, said her greatest health concern is MERS. She called the ongoing outbreaks “alarm bells” and said the virus “is a threat to the entire world.” French doctors estimated the disease's incubation period to be from 9 to 12 days for the second case, longer than the 7 to 10 days previously reported by others. They said longer quarantines might be necessary to stop the virus' spread and noted people with underlying medical conditions could be at higher risk. The scientists wrote that if the virus evolves further, it could become more dangerous. With further mutations, they said MERS “might become increasingly transmissible” and must be continuously assessed. Earlier this week, French officials said the first patient died. The second remains in critical condition.source : http://www.foxnews.com/health/2013/05/31/to-stop-mers-longer-quarantines-may-be-necessary/

New weapon in fight against cervical cancer

The E7 protein is produced early in the lifecycle of the human papillomavirus (HPV) and blocks the body’s natural defences against the uncontrolled division of cells that can lead to cancer. Researchers at the University of Leeds’ School of Molecular and Cellular Biology have synthesised a molecule, called an RNA aptamer, that latches onto the carcinogenic protein and targets it for destruction, significantly reducing its presence in cells in the laboratory derived from cervical cancers…