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Glutamate mood disorders

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https://www.readbyqxmd.com/read/28527083/shared-mechanisms-of-epilepsy-migraine-and-affective-disorders
#1
Davide Zarcone, Simona Corbetta
Since the nineteenth century several clinical features have been observed in common between migraine and epilepsy (such as episodic attacks, triggering factors, presence of aura, frequent familiarity), but only in recent years researchers have really engaged in finding a common pathogenic mechanism. From studies of disease incidence, we understand how either migraine among patients with epilepsy or epilepsy among migraine patients are more frequent than in the general population. This association may result from a direct causality, by the same environmental risk factors and/or by a common genetic susceptibility...
May 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28503114/antidepressant-induced-dopamine-receptor-dysregulation-a-valid-animal-model-of-manic-depressive-illness
#2
REVIEW
Francesca Demontis, Francesca Serra, Gino Serra
BACKGROUND: Mania seems to be associated with an increased dopamine (DA) transmission. Antidepressant treatments can induce mania in humans and potentiated DA transmission in animals, by sensitizing DA D2 receptors in the mesolimbic system. We have suggested that the sensitization of D2 receptors may be responsible of antidepressant-induced mania. This review aims to report the experimental evidence that led to the hypothesis that antidepressant-induced DA receptors dysregulation can be considered an animal model of bipolar disorder...
April 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28416811/gene-deficiency-and-pharmacological-inhibition-of-caspase-1-confers-resilience-to-chronic-social-defeat-stress-via-regulating-the-stability-of-surface-ampars
#3
M-X Li, H-L Zheng, Y Luo, J-G He, W Wang, J Han, L Zhang, X Wang, L Ni, H-Y Zhou, Z-L Hu, P-F Wu, Y Jin, L-H Long, H Zhang, G Hu, J-G Chen, F Wang
Both inflammatory processes and glutamatergic systems have been implicated in the pathophysiology of mood-related disorders. However, the role of caspase-1, a classic inflammatory caspase, in behavioral responses to chronic stress remains largely unknown. To address this issue, we examined the effects and underlying mechanisms of caspase-1 on preclinical murine models of depression. We found that loss of caspase-1 expression in Caspase-1(-/-) knockout mice alleviated chronic stress-induced depression-like behaviors, whereas overexpression of caspase-1 in the hippocampus of wild-type (WT) mice was sufficient to induce depression- and anxiety-like behaviors...
April 18, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28408831/modulation-of-the-activity-of-n-methyl-d-aspartate-receptors-as-a-novel-treatment-option-for-depression-current-clinical-evidence-and-therapeutic-potential-of-rapastinel-glyx-13
#4
REVIEW
Andrei-Nicolae Vasilescu, Nina Schweinfurth, Stefan Borgwardt, Peter Gass, Undine E Lang, Dragos Inta, Sarah Eckart
Classical monoaminergic antidepressants show several disadvantages, such as protracted onset of therapeutic action. Conversely, the fast and sustained antidepressant effect of the N-methyl-d-aspartate receptor (NMDAR) antagonist ketamine raises vast interest in understanding the role of the glutamate system in mood disorders. Indeed, numerous data support the existence of glutamatergic dysfunction in major depressive disorder (MDD). Drawback to this short-latency therapy is its side effect profile, especially the psychotomimetic action, which seriously hampers the common and widespread clinical use of ketamine...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28343167/the-unappreciated-roles-of-the-cholecystokinin-receptor-cck-1-in-brain-functioning
#5
Santiago Ballaz
The CCK(1) receptor is a G-protein-coupled receptor activated by the sulfated forms of cholecystokinin (CCK), a gastrin-like peptide released in the gastrointestinal tract and mammal brain. A substantial body of research supports the hypothesis that CCK(1)r stimulates gallbladder contraction and pancreatic secretion in the gut, as well as satiety in brain. However, this receptor may also fulfill relevant roles in behavior, thanks to its widespread distribution in the brain. The strategic location of CCK(1)r in mesolimbic structures and specific hypothalamic and brainstem nuclei lead to complex interactions with neurotransmitters like dopamine, serotonin, and glutamate, as well as hypothalamic hormones and neuropeptides...
March 25, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/28323008/sub-chronic-variable-stress-induces-sex-specific-effects-on-glutamatergic-synapses-in-the-nucleus-accumbens
#6
Anna Brancato, Dana Bregman, H Francisica Ahn, Madeline L Pfau, Caroline Menard, Carla Cannizzaro, Scott J Russo, Georgia E Hodes
Men and women manifest different symptoms of depression and under current diagnostic criteria, depression is twice as prevalent in woman. However, little is known of the mechanisms contributing to these important sex differences. Sub-chronic variable stress (SCVS), a rodent model of depression, induces depression-like behaviors in female mice only, modeling clinical evidence of higher susceptibility to mood disorders in women. Accumulating evidence indicates that altered neuroplasticity of excitatory synapses in the nucleus accumbens (NAc) is a key pathophysiological feature of susceptibility to social stress in males...
May 14, 2017: Neuroscience
https://www.readbyqxmd.com/read/28320271/interplay-between-brain-bdnf-and-glutamatergic-systems-a-brief-state-of-the-evidence-and-association-with-the-pathogenesis-of-depression
#7
REVIEW
N V Gulyaeva
The excitatory neurotransmitter glutamate system and the brain-derived neurotrophic factor (BDNF) system are principally involved in phenomena of cellular and synaptic plasticity. These systems are interacting, and disclosing mechanisms of such interactions is critically important for understanding the machinery of neuroplasticity and its modulation in normal and pathological situations. The short state of evidence in this review addresses experimentally confirmed connections of these mechanisms and their potential relation to the pathogenesis of depression...
March 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28273723/effects-of-a-72-hours-fasting-on-brain-metabolism-in-healthy-women-studied-in%C3%A2-vivo-with-magnetic-resonance-spectroscopic-imaging
#8
Xiao-Qi Ding, Andrew A Maudsley, Ulrich Schweiger, Birte Schmitz, Ralf Lichtinghagen, Stefan Bleich, Heinrich Lanfermann, Kai G Kahl
Adaptive response of human brain to stress plays a key role in maintaining health. Knowledge about how stress affects neurometabolism may help to understand adaptive stress responses, and distinguish maladaptation in neuropsychiatric disorders. In this study, neurometabolic responses to fasting stress in healthy women were investigated. Fifteen healthy females were examined for mood and cognition and using whole-brain MR spectroscopic imaging before and immediately after a 72-h fasting. Results were compared to 15 age-matched healthy females who did not taken part in fasting (non-fasting)...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28257759/blockade-of-trkb-receptors-in-the-nucleus-accumbens-prior-to-heterotypic-stress-alters-corticotropin-releasing-hormone-crh-vesicular-glutamate-transporter-2-vglut2-and-glucocorticoid-receptor-gr-within-the-mesolimbic-pathway
#9
Idu Azogu, Helene Plamondon
Inhibition of stress-induced elevations in brain-derived neurotrophic factor (BDNF) or its primary receptor tyrosine-related kinase B (TrkB) within the reward pathway may modulate vulnerability to anxiety and mood disorders. The current study examined the role of BDNF/TrkB signaling on biochemistry and behavior under basal conditions and following exposure to a 10-day heterotypic stress paradigm in male rats. Effects of intra-accumbal administration of TrkB antagonist ANA-12 (0.25μg/0.5μl/min) on anxiety, and expression of Trk-B, corticotropin-releasing hormone (CRH), vesicular glutamate transporter 2 (vGluT2) and glucocorticoid receptor (GR) within the mesolimbic pathway were determined...
March 14, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28109561/lithium-reverses-behavioral-and-axonal-transport-related-changes-associated-with-ank3-bipolar-disorder-gene-disruption
#10
Michael G Gottschalk, Melanie P Leussis, Tillmann Ruland, Klaudio Gjeluci, Tracey L Petryshen, Sabine Bahn
Ankyrin 3 (ANK3) has been implicated as a genetic risk factor for bipolar disorder (BD), however the resulting pathophysiological and treatment implications remain elusive. In a preclinical systems biological approach, we aimed to characterize the behavioral and proteomic effects of Ank3 haploinsufficiency and chronic mood-stabilizer treatment in mice. Psychiatric-related behavior was evaluated with the novelty-suppressed feeding (NSF) paradigm, elevated plus maze (EPM) and a passive avoidance task (PAT). Tandem mass spectrometry (MS(E)) was employed for hippocampal proteome profiling...
January 18, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28093238/a-model-of-the-mitochondrial-basis-of-bipolar-disorder
#11
REVIEW
Gerwyn Morris, Ken Walder, Sean L McGee, Olivia M Dean, Susannah J Tye, Michael Maes, Michael Berk
BACKGROUND: Bipolar disorder phenomenologically is a biphasic disorder of energy availability; increased in mania and decreased in depression. In consort, there is accumulating evidence indicating increased mitochondrial respiration and ATP production in bipolar mania which contrasts with decreased mitochondrial function in patients in the euthymic or depressive phase of the illness. Consequently, the central thesis of this paper is that bipolar disorder is due to a phasic dysregulation of mitochondrial biogenergetics...
January 14, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28087766/control-of-amygdala-circuits-by-5-ht-neurons-via-5-ht-and-glutamate-cotransmission
#12
Ayesha Sengupta, Marco Bocchio, David M Bannerman, Trevor Sharp, Marco Capogna
The serotonin (5-HT) system and the amygdala are key regulators of emotional behavior. Several lines of evidence suggest that 5-HT transmission in the amygdala is implicated in the susceptibility and drug treatment of mood disorders. Therefore, elucidating the physiological mechanisms through which midbrain 5-HT neurons modulate amygdala circuits could be pivotal in understanding emotional regulation in health and disease. To shed light on these mechanisms, we performed patch-clamp recordings from basal amygdala (BA) neurons in brain slices from mice with channelrhodopsin genetically targeted to 5-HT neurons...
February 15, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28070122/ketamine-translating-mechanistic-discoveries-into-the-next-generation-of-glutamate-modulators-for-mood-disorders
#13
C A Zarate, R Machado-Vieira
No abstract text is available yet for this article.
March 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/27965654/the-neuro-endocrinological-role-of-microbial-glutamate-and-gaba-signaling
#14
REVIEW
Roberto Mazzoli, Enrica Pessione
Gut microbiota provides the host with multiple functions (e.g., by contributing to food digestion, vitamin supplementation, and defense against pathogenic strains) and interacts with the host organism through both direct contact (e.g., through surface antigens) and soluble molecules, which are produced by the microbial metabolism. The existence of the so-called gut-brain axis of bi-directional communication between the gastrointestinal tract and the central nervous system (CNS) also supports a communication pathway between the gut microbiota and neural circuits of the host, including the CNS...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27916636/glutamate-dysregulation-and-glutamatergic-therapeutics-for-ptsd-evidence-from-human-studies
#15
REVIEW
Lynnette A Averill, Prerana Purohit, Christopher L Averill, Markus A Boesl, John H Krystal, Chadi G Abdallah
Posttraumatic stress disorder (PTSD) is a chronic and debilitating psychiatric disorder afflicting millions of individuals across the world. While the availability of robust pharmacologic interventions is quite lacking, our understanding of the putative neurobiological underpinnings of PTSD has significantly increased over the past two decades. Accumulating evidence demonstrates aberrant glutamatergic function in mood, anxiety, and trauma-related disorders and dysfunction in glutamate neurotransmission is increasingly considered a cardinal feature of stress-related psychiatric disorders including PTSD...
December 1, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27870506/differential-neurometabolite-alterations-in-brains-of-medication-free-individuals-with-bipolar-disorder-and-those-with-unipolar-depression-a-two-dimensional-proton-magnetic-resonance-spectroscopy-study
#16
Hui Li, Haiyun Xu, Yinnan Zhang, Jitian Guan, Jie Zhang, Chongtao Xu, Zhiwei Shen, Bo Xiao, Chunlian Liang, Kaiyuan Chen, Jinling Zhang, Renhua Wu
OBJECTIVES: Bipolar disorder (BD) is a mental disorder characterized by periods of elevated mood and depression. Many individuals with BD are initially misdiagnosed and treated for unipolar depression (UD). In this study, we report direct comparisons between medication-free individuals with BD and those with UD in terms of the neurometabolites in the anterior cingulate cortex (ACC), medial prefrontal cortex (mPFC), parietal cortex (PC), and posterior cingulate cortex (PCC) of the brain...
November 2016: Bipolar Disorders
https://www.readbyqxmd.com/read/27861545/glucocorticoid-induces-incoordination-between-glutamatergic-and-gabaergic-neurons-in-the-amygdala
#17
Guang-Yan Wang, Zhao-Ming Zhu, Shan Cui, Jin-Hui Wang
BACKGROUND: Stressful life leads to mood disorders. Chronic mild stress is presumably major etiology for depression, and acute severe stress leads to anxiety. These stressful situations may impair hypothalamus-pituitary-adrenal axis and in turn induce synapse dysfunction. However, it remains elusive how the stress hormones mess up subcellular compartments and interactions between excitatory and inhibitory neurons, which we have investigated in mouse amygdala, a structure related to emotional states...
2016: PloS One
https://www.readbyqxmd.com/read/27830574/inflammation-effects-on-brain-glutamate-in-depression-mechanistic-considerations-and-treatment-implications
#18
Ebrahim Haroon, Andrew H Miller
There has been increasing interest in the role of glutamate in mood disorders, especially given the profound effect of the glutamate receptor antagonist ketamine in improving depressive symptoms in patients with treatment-resistant depression. One pathway by which glutamate alterations may occur in mood disorders involves inflammation. Increased inflammation has been observed in a significant subgroup of patients with mood disorders, and inflammatory cytokines have been shown to influence glutamate metabolism through effects on astrocytes and microglia...
2017: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27824355/neuropathology-of-mood-disorders-do-we-see-the-stigmata-of-inflammation
#19
REVIEW
N Mechawar, J Savitz
A proportion of cases with mood disorders have elevated inflammatory markers in the blood that conceivably may result from stress, infection and/or autoimmunity. However, it is not yet clear whether depression is a neuroinflammatory disease. Multiple histopathological and molecular abnormalities have been found postmortem but the etiology of these abnormalities is unknown. Here, we take an immunological perspective of this literature. Increases in activated microglia or perivascular macrophages in suicide victims have been reported in the parenchyma...
November 8, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27781556/mood-therapeutics-novel-pharmacological-approaches-for-treating-depression
#20
REVIEW
Ioline D Henter, Rafael T de Sousa, Philip W Gold, Andre R Brunoni, Carlos A Zarate, Rodrigo Machado-Vieira
Real-world effectiveness trials suggest that antidepressant efficacy is limited in many patients with mood disorders, underscoring the urgent need for novel therapeutics to treat these disorders. Areas covered: Here, we review the clinical evidence supporting the use of novel modulators for the treatment of mood disorders, including specific glutamate modulators such as: 1) high-trapping glutamatergic modulators; 2) subunit (NR2B)-specific N-methyl-D-aspartate (NMDA) receptor antagonists; 3) NMDA receptor glycine-site partial agonists; and 4) metabotropic glutamate receptor (mGluR) modulators...
February 2017: Expert Review of Clinical Pharmacology
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