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Effects of Acute and Sustained Administration of Vilazodone (EMD68843) on Monoaminergic Systems: An In Vivo Electrophysiological StudyCrnic, Agnes January 2014 (has links)
Vilazodone is a partial 5-HT1A receptor agonist and a selective serotonin reuptake inhibitor (SSRI). Acute administration caused a dose-dependent decrease in dorsal raphe (DR) serotonin (5-HT) neuron firing rates. Vilazodone significantly decreased DR 5-HT neuronal firing following 2-day administration, which was shown to recover completely after 14-day administration. The 2-day administration of vilazodone significantly decreased firing in ventral tegmental area dopamine neurons; this effect persisted after 14-day treatment. The firing rate of norepinephrine neurons in the locus coeruleus was not significantly altered following 2-day treatment but did decrease following 14-day treatment. In the hippocampus, 14-day treatment with vilazodone significantly enhanced tonic activation, while having no effect on 5-HT reuptake. Vilazodone produced effects similar to conventional SSRIs while also inducing alterations in monoaminergic neurons that may be associated with its 5-HT1A properties and may have a role in the field of treatment resistant depression.
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En utvärdering av 5-HT1A-receptoragonisten vilazodone för en utökad antidepressiv effekt i behandlingen av egentlig depression / Evaluation of the antidepressant effect of vilazodone for the treatment of major depressionKhalifa, Aseel January 2017 (has links)
Major depressive disorder (MDD) is a mood disorder majorly responsible for disability and mortality worldwide. With a lifetime prevalence of 15-20%, it is the main cause of functional impairment in Western societies as well as the fourth most debilitating illness in the world. Although the pathophysiology of MDD is not yet fully understood, some evidence that suggest the presence of a neuroanatomical deficiency have given rise to the theory of a specific imbalance in the monoamine neurotransmitters noradrenaline (NA) and/or serotonin (5-HT) levels in the brain. Overall, the various classes of antidepressant agents that have been developed to increase monoamine levels on the basis of this proposal have been successful. However, facts relating to prevalent escalation in the illness and recurring episodes of depression point towards a need to enhance clinical treatment. Most conventional antidepressants such as selective serotonin reuptake inhibitors (SSRI) and selective serotonin and noradrenaline inhibitors (SNRI) pose problems in symptomatic improvement. These include therapeutic lag, safety and tolerability issues, making more than 30% patients with MDD unable to reach adequate relief. In this respect, the action mechanism has moved beyond conventional SSRI and lead to the introduction of vilazodone, a novel antidepressant with an additional 5-HT1A partial agonist profile argued to be of potential benefit for a greater efficacy, faster onset of action and better tolerability. Using secondary data, this project aimed to evaluate the role of vilazodone as a SPARI-drug in the overall clinical treatment of MDD as well as its potential in addressing some of the most common obstacles in antidepressant treatment. Study results proved vilazodone’s efficacy to be superior to placebo. Patients across all studies showed significant improvement in depressive symptoms measured in MADRS and HAMD17. Vilazodone was also shown to be generally safe and tolerable but was not positively distinguished from placebo with regards to adverse effects. An overall, meaningful improvement in depressive symptoms was demonstrated in vilazodone, which reinforces its merit as an important treatment option for patients with MDD.
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En utvärdering av 5-HT1A-receptoragonisten vilazodone för en utökad antidepressiv effekt i behandlingen av egentlig depression / Evaluation of the antidepressant effect of vilazodone for the treatment of major depressionKhalifa, Aseel January 2017 (has links)
Major depressive disorder (MDD) is a mood disorder majorly responsible for disability and mortality worldwide. With a lifetime prevalence of 15-20%, it is the main cause of functional impairment in Western societies as well as the fourth most debilitating illness in the world. Although the pathophysiology of MDD is not yet fully understood, some evidence that suggest the presence of a neuroanatomical deficiency have given rise to the theory of a specific imbalance in the monoamine neurotransmitters noradrenaline (NA) and/or serotonin (5-HT) levels in the brain. Overall, the various classes of antidepressant agents that have been developed to increase monoamine levels on the basis of this proposal have been successful. However, facts relating to prevalent escalation in the illness and recurring episodes of depression point towards a need to enhance clinical treatment. Most conventional antidepressants such as selective serotonin reuptake inhibitors (SSRI) and selective serotonin and noradrenaline inhibitors (SNRI) pose problems in symptomatic improvement. These include therapeutic lag, safety and tolerability issues, making more than 30% patients with MDD unable to reach adequate relief. In this respect, the action mechanism has moved beyond conventional SSRI and lead to the introduction of vilazodone, a novel antidepressant with an additional 5-HT1A partial agonist profile argued to be of potential benefit for a greater efficacy, faster onset of action and better tolerability. Using secondary data, this project aimed to evaluate the role of vilazodone as a SPARI-drug in the overall clinical treatment of MDD as well as its potential in addressing some of the most common obstacles in antidepressant treatment. Study results proved vilazodone’s efficacy to be superior to placebo. Patients across all studies showed significant improvement in depressive symptoms measured in MADRS and HAMD17. Vilazodone was also shown to be generally safe and tolerable but was not positively distinguished from placebo with regards to adverse effects. An overall, meaningful improvement in depressive symptoms was demonstrated in vilazodone, which reinforces its merit as an important treatment option for patients with MDD.
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