Road From Nose to Brain for Treatment of Alzheimer: The Bumps and Humps

Rajesh       Kumar; Monica       Gulati; Sachin    Kumar    Singh; Deepika       Sharma; Omji       Porwal
Abstract

Vulnerability of the brain milieu to even the subtle changes in its normal physiology is guarded by a highly efficient blood brain barrier. A number of factors i.e. molecular weight of the drug, its route of administration, lipophilic character, etc. play a significant role in its sojourn through the Blood Brain Barrier (BBB) and limit the movement of drug into brain tissue through BBB. To overcome these problems, alternative routes of drug administration have been explored to target the drugs to brain tissue. Nasal route has been widely reported for the administration of drugs for treatment of Alzheimer. In this innovative approach, the challenge of BBB is bypassed. Through this route, both the larger as well as polar molecules can be made to reach the brain tissues. Generally, these systems are either pH dependent or temperature dependent. The present review highlights the anatomy of nose, mechanisms of drug delivery from nose to brain, critical factors in the formulation of nasal drug delivery system, nasal formulations of various drugs that have been tried for their nasal delivery for treatment of Alzheimer. It also dives deep to understand the factors that contribute to the success of such formulations to carve out a direction for this niche area to be explored further.
Keywords: Brain targeting, Alzheimer, Nasal delivery, BBB, Olfactory, Intranasal.
Graphical Abstract

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Cite As
CNS & Neurological Disorders - Drug Targets

Road From Nose to Brain for Treatment of Alzheimer: The Bumps and Humps

Abstract

Graphical Abstract
