Wednesday, September 13, 2006

Ou Acheter Jeff Hardy



varenicline, a drug for smoking cessation

Varenicline (Champix ) is a partial agonist of the nicotinic receptor alpha4-beta2. The effectiveness of varenicline has been evaluated in two placebo-controlled clinical trials in about 2000 smokers. These subjects were randomly assigned to receive varenicline 1mg twice a day, bupropion 150mg 2 times daily, or placebo for 12 weeks. The follow-up period was 40 weeks (without treatment). 44% of patients treated with varenicline stopped smoking at the end of the treatment period of 12 weeks, compared with 30% of patients who quit after taking bupropion and 18% of those treated with placebo.Dopo 1 year, patients who received varenicline were significantly more likely to remain smoke-free than patients who received bupropion or placebo. In a third study, patients were treated with varenicline for 12 weeks, and then were randomly assigned to either placebo or varenicline for another 12 weeks. These patients were followed for 28 weeks after treatment. 71% of subjects taking varenicline were smoke-free after 6 months compared to 50% on placebo.

Does Cocoa Butter Clog Pores



Effects of Cannabis on neurodevelopmental

The developing brain is susceptible to the effects of exogenous cannabinoids both during the perinatal period (through the use of cannabis by the mother) and adolescence. Perinatal exposure data in animals and humans have shown an effect Cannabis on certain features, including: specific cognitive deficits, especially in visuospatial function, impulsivity, inattention and hyperactivity, symptoms of depression. Animal studies have shown that the systems of motor control, neuroendocrine function and nociception can be affected by cannabis. Fetal studies have shown that these effects are due to influences mediated by cannabinoids on neurotransmitter systems based on the dopamine and the opioids. Cannabinoids during adolescence produce deleterious effects on the cognitive system, symptoms of depression, schizophrenia and substance use disorders. Sex-specific differences were observed both in human studies than in those animals.
Sundram S et al, Hum Psychopharmacol 2006; 21: 245-254