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Psychiatric disorders rank among the most common severe diseases worldwide, with millions of people affected worldwide every year. The symptoms are manifold, and the outcome for the patients is often unclear. As a high and yearly rising cost burden for society, anxiety disorders, depression and their related mental disorders are currently a well-researched topic in order to develop new functional pharmacological therapies as alternatives to those that are in use and bear many unpleasant side effects. Brain circuitries, such as those underlying anxiety formations, are mainly driven by the interplay of various neurotransmitter systems and the interaction of different brain loci, as well as the modulating impact of neuropeptides. Targeting those networks is a complex but promising way to regulate mood. Alterations on molecular level of the neuronal cell in response to respective receptor activation, especially at post-transcriptional level via the highly regulatory function of non-coding RNAs such as microRNAs (miRNAs) seem to hold a promising future in the development of novel therapeutic strategies and are therefore under intensified investigation. This review focusses on the impact of miRNAs on the neurotransmitter and neuropeptide systems of the central nervous system relevant for the formation of anxiety disorders and discusses the potential of miRNAs for the development of new therapeutic strategies for anxiety and mood disorders.

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