Blues in the Brain and Beyond: Molecular Bases of Major Depressive Disorder and Relative Pharmacological and Non-Pharmacological Treatments

Despite the extensive research conducted in recent decades, the molecular mechanisms underlying major depressive disorder (MDD) and relative evidence-based treatments remain unclear. Various hypotheses have been successively proposed, involving different biological systems. This narrative review aim...

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Main Authors: Elisabetta Maffioletti, Alessandra Minelli, Daniela Tardito, Massimo Gennarelli
Format: Article
Language:English
Published: MDPI AG 2020-09-01
Series:Genes
Subjects:
Online Access:https://www.mdpi.com/2073-4425/11/9/1089
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author Elisabetta Maffioletti
Alessandra Minelli
Daniela Tardito
Massimo Gennarelli
author_facet Elisabetta Maffioletti
Alessandra Minelli
Daniela Tardito
Massimo Gennarelli
author_sort Elisabetta Maffioletti
collection DOAJ
description Despite the extensive research conducted in recent decades, the molecular mechanisms underlying major depressive disorder (MDD) and relative evidence-based treatments remain unclear. Various hypotheses have been successively proposed, involving different biological systems. This narrative review aims to critically illustrate the main pathogenic hypotheses of MDD, ranging from the historical ones based on the monoaminergic and neurotrophic theories, through the subsequent neurodevelopmental, glutamatergic, GABAergic, inflammatory/immune and endocrine explanations, until the most recent evidence postulating a role for fatty acids and the gut microbiota. Moreover, the molecular effects of established both pharmacological and non-pharmacological approaches for MDD are also reviewed. Overall, the existing literature indicates that the molecular mechanisms described in the context of these different hypotheses, rather than representing alternative ones to each other, are likely to contribute together, often with reciprocal interactions, to the development of MDD and to the effectiveness of treatments, and points at the need for further research efforts in this field.
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spelling doaj.art-f15493d9924b457796319e24b03d49582023-11-20T14:11:37ZengMDPI AGGenes2073-44252020-09-01119108910.3390/genes11091089Blues in the Brain and Beyond: Molecular Bases of Major Depressive Disorder and Relative Pharmacological and Non-Pharmacological TreatmentsElisabetta Maffioletti0Alessandra Minelli1Daniela Tardito2Massimo Gennarelli3Genetics Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, 25125 Brescia, ItalyGenetics Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, 25125 Brescia, ItalyPsychiatric Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, 25125 Brescia, ItalyGenetics Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, 25125 Brescia, ItalyDespite the extensive research conducted in recent decades, the molecular mechanisms underlying major depressive disorder (MDD) and relative evidence-based treatments remain unclear. Various hypotheses have been successively proposed, involving different biological systems. This narrative review aims to critically illustrate the main pathogenic hypotheses of MDD, ranging from the historical ones based on the monoaminergic and neurotrophic theories, through the subsequent neurodevelopmental, glutamatergic, GABAergic, inflammatory/immune and endocrine explanations, until the most recent evidence postulating a role for fatty acids and the gut microbiota. Moreover, the molecular effects of established both pharmacological and non-pharmacological approaches for MDD are also reviewed. Overall, the existing literature indicates that the molecular mechanisms described in the context of these different hypotheses, rather than representing alternative ones to each other, are likely to contribute together, often with reciprocal interactions, to the development of MDD and to the effectiveness of treatments, and points at the need for further research efforts in this field.https://www.mdpi.com/2073-4425/11/9/1089major depressive disorderantidepressant drugsnon-pharmacological treatmentselectroconvulsive therapymonoaminesserotonin
spellingShingle Elisabetta Maffioletti
Alessandra Minelli
Daniela Tardito
Massimo Gennarelli
Blues in the Brain and Beyond: Molecular Bases of Major Depressive Disorder and Relative Pharmacological and Non-Pharmacological Treatments
Genes
major depressive disorder
antidepressant drugs
non-pharmacological treatments
electroconvulsive therapy
monoamines
serotonin
title Blues in the Brain and Beyond: Molecular Bases of Major Depressive Disorder and Relative Pharmacological and Non-Pharmacological Treatments
title_full Blues in the Brain and Beyond: Molecular Bases of Major Depressive Disorder and Relative Pharmacological and Non-Pharmacological Treatments
title_fullStr Blues in the Brain and Beyond: Molecular Bases of Major Depressive Disorder and Relative Pharmacological and Non-Pharmacological Treatments
title_full_unstemmed Blues in the Brain and Beyond: Molecular Bases of Major Depressive Disorder and Relative Pharmacological and Non-Pharmacological Treatments
title_short Blues in the Brain and Beyond: Molecular Bases of Major Depressive Disorder and Relative Pharmacological and Non-Pharmacological Treatments
title_sort blues in the brain and beyond molecular bases of major depressive disorder and relative pharmacological and non pharmacological treatments
topic major depressive disorder
antidepressant drugs
non-pharmacological treatments
electroconvulsive therapy
monoamines
serotonin
url https://www.mdpi.com/2073-4425/11/9/1089
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