Targeted Brain Delivery of Bioactive Molecules Using Nanocarriers

The brain is the center of the nervous system and an integral part of the body acting as a major regulating and conveying organ to maintain the body’s homeostasis in response to changes in both the external and internal surroundings. Brain consists of approximately 100 billion neurons and 1 trillion glial cells [1]. The connection between two neurons is known as synapse, which are responsible for flow of information in the form of tiny chemical pulses released by one neuron and taken up by the meeting neuron. Different types and strengths of signals move constantly through the brain’s circuits, creating the cellular basis of memories, thoughts, and skills [2].