Smokers invite to test vaccine against nicotine addictionJune 12, 2006UCSF enrolls patients for phase II of "proof of principle" trial of nicotine blocking vaccine UCSF's Habit Abatement Clinic is testing a vaccine that enlists help from the immune system to keep nicotine away from the brain. The vaccine is designed to help smokers quit and to limit the urge to start smoking again. Called NicVax, the investigational vaccine is being developed by Nabi Biopharmaceuticals to prevent and treat nicotine addiction and to help people quit smoking. Normally when a smoker inhales, nicotine is carried by the bloodstream to the brain, where it triggers neuro-receptors to generate positive sensations that can lead to addiction. The vaccine stimulates the immune system to produce antibodies that recognize the small nicotine molecule. Bound to these antibodies, nicotine molecules no longer can cross the blood-brain barrier and enter the brain. "With little or no nicotine reaching the brain, smoking is less rewarding. That gives the smoker a chance to change the behavioral and social factors that also influence smoking," said Victor Reus, MD, principal investigator for the study at UCSF. Because immune antibodies remain in the body for some time, Reus said it is hoped that the vaccine also will prevent relapse. When a vaccinated smoker lights up months after quitting, the person should not experience the nicotine-triggered reward that tempts most people back into the habit. Northern California smokers over 18 are invited to join a national study to determine whether NicVax can help people abstain from smoking and help them avoid relapsing within the next 12 months. Participation is free and requires a one-year commitment to come to San Francisco for injections and follow-up visits. The study also includes five behavioral counseling sessions. Participants will be paid for each visit and given validated parking at the clinic. University of California—San Francisco |
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| Related Nicotine Addiction Current Events and Nicotine Addiction News Articles Crushing cigarettes in a virtual reality environment reduces tobacco addiction Smokers who crushed computer-simulated cigarettes as part of a psychosocial treatment program in a virtual reality environment had significantly reduced nicotine dependence and higher rates of tobacco abstinence than smokers participating in the same program who grasped a computer-simulated ball. New study expands the list of hazardous chemicals in smokeless tobacco Attention all smokeless tobacco users! It's time to banish the comforting notion that snuff and chewing tobacco are safe because they don't burn and produce inhalable smoke like cigarettes. Skin color clue to nicotine dependence Higher concentrations of melanin -- the color pigment in skin and hair -- may be placing darker pigmented smokers at increased susceptibility to nicotine dependence and tobacco-related carcinogens than lighter skinned smokers, according to scientists. Caltech researchers find tiny genetic change keeps nicotine from binding to muscle cells A tiny genetic mutation is the key to understanding why nicotine--which binds to brain receptors with such addictive potency--is virtually powerless in muscle cells that are studded with the same type of receptor. Penn research probes genetic underpinnings of nicotine addiction A new study from the Abramson Cancer Center and Department of Psychiatry in the University of Pennsylvania School of Medicine shows that smokers who carry a particular version of a gene for an enzyme that regulates dopamine in the brain may suffer from concentration problems and other cognitive deficits when abstaining from nicotine - a problem that puts them at risk for relapse during attempts to quit smoking. ADHD appears to increase level of nicotine dependence in smokers Young people with ADHD are not only at increased risk of starting to smoke cigarettes, they also tend to become more seriously addicted to tobacco and more vulnerable to environmental factors such as having friends or parents who smoke, according to a study from Massachusetts General Hospital reseachers. Caltech scientists engineer supersensitive receptor, gain better understanding of dopamine system Genetically modifying a receptor found on the neurons that produce the neurotransmitter dopamine has given California Institute of Technology (Caltech) researchers a unique glimpse into the workings of the brain's dopamine system--as well as a new target for treating diseases that result from either too much or too little of this critical neurotransmitter. K-State professor's research suggests that cigarettes' power may not be in nicotine itself There may be a very good reason why coffee and cigarettes often seem to go hand in hand. If your first cigarette gave you a buzz and you now smoke, a gene may be to blame Anyone who has ever tried smoking probably remembers that first cigarette vividly. For some, it brought a wave of nausea or a nasty coughing fit. For others, those first puffs also came with a rush of pleasure or "buzz." Research reveals why some smokers become addicted with their first cigarette New research from The University of Western Ontario reveals how the brain processes the 'rewarding' and addictive properties of nicotine, providing a better understanding of why some people seemingly become hooked with their first smoke. More Nicotine Addiction Current Events and Nicotine Addiction News Articles |
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