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[email protected] CNS & Neurological Disorders - Drug Targets, 2014, 13, 391-401 391 Current Acetylcholinesterase-Inhibitors: A Neuroinformatics Perspective Sibhghatulla Shaikh1,†, Anupriya Verma2,†, Saimeen Siddiqui1,†, Syed Sayeed Ahmad2, Syed Mohd. Danish Rizvi1, Shazi Shakil*,2, Deboshree Biswas1, Divya Singh1, Mohd. Haris Siddiqui2, Shahnawaz Shakil3, Shams Tabrez4 and Mohammad Amjad Kamal4 1Department of Biosciences, Integral University, Lucknow-226026, India 2Department of Bio-Engineering, Integral University, Lucknow-226026, India 3Cardinal Health 7000, Cardinal Place, Dublin OH 43017, USA 4King Fahd Medical Research Centre, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia Abstract: This review presents a concise update on the inhibitors of the neuroenzyme, acetylcholinesterase (AChE; EC 3.1.1.7). AChE is a serine protease, which hydrolyses the neurotransmitter, acetylcholine into acetate and choline thereby terminating neurotransmission. Molecular interactions (mode of binding to the target enzyme), clinical applications and limitations have been summarized for each of the inhibitors discussed. Traditional inhibitors (e.g. physostigmine, tacrine, donepezil, rivastigmine etc.) as well as novel inhibitors like various physostigmine-derivatives have been covered. This is followed by a short glimpse on inhibitors derived from nature (e.g. Huperzine A and B, Galangin). Also, a discussion on ‘hybrid of pre-existing drugs’ has been incorporated. Furthermore, current status of therapeutic applications of AChE- inhibitors has also been summarized. Keywords: Acetylcholinesterase, acetylcholine, physostigmine, rivastigmine, huperzine A. 1. INTRODUCTION gravis (MG) [5], Parkinson’s disease (PD) [6] and other ‘non-classical’ activities such as cell adhesion, neurite The Nobel Prize in Physiology or Medicine 1936 was formation and network formation [7] elicited numerous shared by Sir Henry Hallett Dale and Otto Loewi for their researches relevant to the medical field.