Role of Biosynthesis and Catabolism of Neurotransmitters in Drug Discovery for Anxiety and Depression.

The purpose of this review is to correlate the probable causes of anxiety disorders with the imbalance of neurotransmitters in the brain and also highlight the drugs for these mental disorders that have been discovered based on the biosynthesis and catabolism of these brain chemicals. Peer-reviewed journal's articles, news and books published in English between 1997 and 2023 describing the role of neurotransmitters in anxiety disorders were searched in Google Scholar, Research Gate and PubMed databases. The contents were carefully analyzed by the authors and understood and compiled to build a concise perspective on the role of biosynthesis and catabolism of neurotransmitters in anxiety and depression. Anxiety disorders are reported to be common patterns of psychological symptoms that impact multiple areas of life. Anxiety and depression are prevalent worldwide and are significantly contributing towards the global health burden. Genetic determinants are believed to play an important role in these disorders. According to modern medicine, one of the most important aspects that is known to be crucial for these disorders is the imbalance of neurotransmitters in the brain. The biosynthesis and catabolism of neurotransmitters have been extensively targeted for innovative drug discovery approaches at various steps that have led to the discovery of many drugs for these psychological disorders. The biosynthetic and catabolic reaction cycles of neurotransmitters and the discovery of drugs based on these hypotheses are discussed. To the best of the authors' knowledge, this review compiles already known descriptive knowledge on "relation of neurotransmitter imbalance with anxiety disorders" in a precise way that will provide readers with an overview of the vast literature.
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