Abstract
The brain is quite unique from other organs of the body. Despite enormous advances in brain research, CNS brain disorders still remain accountable for a high number of hospitalizations requiring prolonged care. It is estimated that approximately 1.5 billion people worldwide are suffering from various CNS disorders, such as Alzheimer’s disease, Parkinson’s disease, amyotrophic lateral sclerosis, multiple sclerosis, HIV-dementia and stroke, among others. In recent years, the explosion of interest in the biological aspects of CNS disorders as well as the brain has led to an improvement in the understanding and the treatment of these diseases; however, they still remain chronic and debilitating disorders for many patients. As demographic trends show an increase in the percentage of elderly people in the population, diseases of the brain are becoming a major health problem. It is expected that the number of cases of CNS diseases will be around 1.9 billion by 2020 [1]. Despite these challenges, brain drug targeting plays a vital role and gives tremendous hope for the treatment of these disorders. This area of study is fascinating as well as challenging to the scientists who are in this domain.
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