Experimental Research on Nitric Oxide and the Therapy of Alzheimer Disease: A Challenging Bridge
Abstract:Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by severe cognitive impairment due to neuronal death. Although the lost of cognitive function is the main problem for AD subjects, death occurs due to secondary issues such as concomitant infections, respiratory complications or multi-organ failure. Current drugs used in AD are acetylcholinesterase inhibitors and antagonists of the N-methyl-D-aspartate receptor. These drugs may only slightly improve cognitive functions but have only very limited impact on the clinical course of the disease. Over the last 5 years, new targets were identified and innovative drugs against AD have been designed and developed. Worthy of mention are β-secretase inhibitors, monoclonal antibodies against amyloid-β-peptide and tau inhibitors. However, although promising beneficial effects were highlighted in the data from preclinical studies, only few of these new drugs improved cognitive functions for a significant time frame in AD subjects. Controversial is the therapeutic effect on AD obtained through the manipulation of the nitric oxide synthase/nitric oxide system since the potential toxic effects on brain function could overcome the beneficial effects. The aim of this review is to analyze from a pharmacologic point of view both old and new drugs developed for the treatment of AD. In addition, the risk/benefit ratio related to the modulation of the nitric oxide synthase/nitric oxide system in AD brain will be analyzed.
Document Type: Research Article
Publication date: November 1, 2011
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- CNS & Neurological Disorders - Drug Targets aims to cover all the latest and outstanding developments on the medicinal chemistry, pharmacology, molecular biology, genomics and biochemistry of contemporary molecular targets involved in neurological and central nervous system (CNS) disorders e.g. disease specific proteins, receptors, enzymes, genes. Each issue of the journal will contain a series of timely in-depth reviews written by leaders in the field covering a range of current topics on drug targets involved in neurological and CNS disorders. As the discovery, identification, characterization and validation of novel human drug targets for neurological and CNS drug discovery continues to grow; this journal will be essential reading for all pharmaceutical scientists involved in drug discovery and development.