Drug abuse in Hong Kong abuse problems through providing crisis intervention services and drug education. Recreational drug use is characterised by the use of drugs with psychoactive effects without medical justification for personal enjoyment. Recreational drug use in Hong Kong among young adults has been in the rise in recent decades, popularised by the introduction of club culture in the West and adolescents open-minded attitude towards illegal drug use as a normal part of leisure. The revival of this trend is connected to the change in drug abuse pattern of adolescents, mainly from party drugs such as ketamine and MDMA. The popularisation of party drugs
Nanoparticles for drug delivery to the brain drug. Bolaamphiphile nano-vesicles can cross the BBB, and they allow controlled release of the drug to target sites. Lipoplexes can also be formed from cationic liposomes and DNA solutions, to yield transfection agents. Cationic liposomes cross the BBB through adsorption mediated endocytosis followed by internalization in the endosomes of the endothelial cells. By transfection of endothelial cells through the use of lipoplexes, physical alterations in the cells could be made. These physical changes could potentially improve how some nanoparticle drug-carriers cross the BBB. Metal nanoparticles are promising as carriers for drug delivery to the brain. Common metals used for nanoparticle