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 to target specific organs and tissues in the body, to carry DNA for gene therapy, and to deliver larger molecules such as proteins, peptides, and even genes. To manufacture these polymeric nanoparticles, the drug molecules are first dissolved and then encapsulated or attached to a polymer nanoparticle matrix. Three different structures can then be obtained from this process; nanoparticles, nanocapsules (in which the drug is encapsulated and surrounded by the polymer matrix), and nanospheres (in which the drug is dispersed throughout the polymeric matrix in a spherical form). One of the most important traits for nanoparticle delivery systems is that