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https://www.readbyqxmd.com/read/29775777/antidepressant-potential-of-novel-flavonoids-derivatives-from-sweet-violet-viola-odorata-l-pharmacological-biochemical-and-computational-evidences-for-possible-involvement-of-serotonergic-mechanism
#1
Nasiara Karim, Imran Khan, Abeer Abdelhalim, Ajmal Khan, Sobia Ahsan Halim
Plant-derived natural constituents are of great interest in modern drug discovery due to their natural diversity. Viola odorata L has been traditionally used for the treatment of neuropsychiatric disorders. The present study was undertaken to isolate phytoconstituents including three flavonoids 5,7-Dihydroxy-3,6-dimethoxyflavone[1] 5,7,4'-trihydroxy-3',5'dimethoxyflavone [2] and 5,7,4'-trihydroxy-3'-methoxyflavone [3] from the whole plant of Viola odorata L and to investigate the antidepressant-like effects of these compounds and their possible mechanism of action using antagonists of the serotonergic, dopaminergic and adrenergic system...
May 15, 2018: Fitoterapia
https://www.readbyqxmd.com/read/29773951/the-role-of-neuroinflammation-and-neurovascular-dysfunction-in-major-depressive-disorder
#2
REVIEW
Sang Won Jeon, Yong-Ku Kim
Although depression has generally been explained with monoamine theory, it is far more multifactorial, and therapies that address the disease's pathway have not been developed. In this context, an understanding of neuroinflammation and neurovascular dysfunction would enable a more comprehensive approach to depression. Inflammation is in a sense a type of allostatic load involving the immune, endocrine, and nervous systems. Neuroinflammation is involved in the pathophysiology of depression by increasing proinflammatory cytokines, activating the hypothalamus-pituitary-adrenal axis, increasing glucocorticoid resistance, and affecting serotonin synthesis and metabolism, neuronal apoptosis and neurogenesis, and neuroplasticity...
2018: Journal of Inflammation Research
https://www.readbyqxmd.com/read/29771165/cluster-subgroups-based-on-overall-pressure-pain-sensitivity-and-psychosocial-factors-in-chronic-musculoskeletal-pain-differences-in-clinical-outcomes
#3
Suzana C Almeida, Steven Z George, Raquel D V Leite, Anamaria S Oliveira, Thais C Chaves
OBJECTIVE: We aimed to empirically derive psychosocial and pain sensitivity subgroups using cluster analysis within a sample of individuals with chronic musculoskeletal pain (CMP) and to investigate derived subgroups for differences in pain and disability outcomes. METHODS: Eighty female participants with CMP answered psychosocial and disability scales and were assessed for pressure pain sensitivity. A cluster analysis was used to derive subgroups, and analysis of variance (ANOVA) was used to investigate differences between subgroups...
May 17, 2018: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29768967/interleukin-1-receptor-1-deletion-in-focal-and-diffuse-experimental-traumatic-brain-injury-in-mice
#4
Joon Yong Chung, Nicolas Krapp, Limin Wu, Sevda Lule, Lauren McAllister, William Edmiston Iii, Samantha Martin, Emily Levy, Tanya Songtachalert, John Sherwood, Erin Buckley, Bharat Sanders, Saef Izzy, Suzanne Hickman, Shuzhen Guo, Josephine Lok, Joseph El Khoury, Eng Lo, David Kaplan, Michael Whalen
Important differences in the biology of focal and diffuse traumatic brain injury (TBI) subtypes may result in unique pathophysiological responses to shared molecular mechanisms. Interleukin-1 (IL-1) signaling has been tested as a potential therapeutic target in preclinical models of cerebral contusion and diffuse TBI, and in a phase II clinical trial, but no published studies have examined IL-1 signaling in an impact/acceleration closed head injury (CHI) model. We hypothesized that genetic deletion of IL-1 receptor-1 (IL-1R1 KO) would be beneficial in focal (contusion) and CHI in mice...
May 17, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29766462/disgust-and-fear-common-emotions-between-eating-and-phobic-disorders
#5
Rami Bou Khalil, Ibrahim R Bou-Orm, Yara Tabet, Lama Souaiby, Hayat Azouri
Eating disorders (ED) are prevalent mental illnesses composed mainly of anorexia nervosa, bulimia nervosa and binge eating disorders. Anxiety disorders are another set of mental illnesses, with phobic disorder (PD) being the most prevalent disorder. ED and PD are highly comorbid. The aim of this study is to assess, in 131 individuals attending an outpatient clinic for different health issues, the level of fear related to situations generating avoidance such as in social anxiety and specific phobias according to the fear questionnaire (FQ), the level of disgust according to the disgust scale (DS-R) and the vulnerability towards ED according to the SCOFF scale to demonstrate that high levels of both fear and disgust increase the vulnerability towards ED...
May 15, 2018: Eating and Weight Disorders: EWD
https://www.readbyqxmd.com/read/29763923/bidirectional-connections-between-depression-and-ataxia-severity-in-spinocerebellar-ataxia-type-3-patients
#6
Min-Ting Lin, Jin-Shan Yang, Ping-Ping Chen, Mei-Zhen Qian, Hui-Xia Lin, Xiao-Ping Chen, Xian-Jin Shang, Dan-Ni Wang, Yu-Chao Chen, Bin Jiang, Yi-Jun Chen, Wan-Jin Chen, Ning Wang, Shi-Rui Gan
BACKGROUND: Spinocerebellar ataxia type 3 (SCA3), which is the most common subtype of SCA worldwide, exhibits common neuropsychological symptoms such as depression. However, the contribution of depression to the severity of SCA3 has not yet been thoroughly investigated. METHODS: The present study investigated the prevalence of depression using Beck depression inventory in 104 molecularly confirmed SCA3 patients from China. The putative risk factors for depression and whether the depression could affect the severity of ataxia were established by multivariable linear regression models...
May 15, 2018: European Neurology
https://www.readbyqxmd.com/read/29754115/delusional-misidentifications-in-a-procrustean-bed
#7
EDITORIAL
G N Christodoulou, M Margariti, N Christodoulou
The Delusional Misidentification Syndromes (DMSs) are characterized by defective integration of the normally The Delusional Misidentification Syndromes (DMSs) are characterized by defective integration of the normally fused functions of perception and recognition. The classical sub-types are: the syndromes of Capgras, Fregoli,Intermetamorphosis (mentioned in 3) and Subjective doubles. These syndromes occur in a clear sensorium and shouldbe differentiated from the banal transient misidentifications occurring in confusional states and in mania and from thenon-delusional misidentifications (e...
January 2018: Psychiatrikē, Psychiatriki
https://www.readbyqxmd.com/read/29751238/prevalence-of-anxiety-and-depressive-disorders-among-youth-with-intellectual-disabilities-a-systematic-review-and-meta-analysis
#8
REVIEW
Christophe Maïano, Sylvain Coutu, Danielle Tracey, Stéphane Bouchard, Geneviève Lepage, Alexandre J S Morin, Grégory Moullec
BACKGROUND: The purpose of this meta-analytic study was to determine the pooled prevalence estimates of anxiety and depressive disorders among children and adolescents with intellectual disabilities (ID) and to assess the extent to which these pooled prevalence rates differed according to studies' characteristics. METHOD: A systematic literature search was performed in nine databases and 21 studies, published between 1975 and 2015, met the inclusion criteria. RESULTS: The resulting pooled prevalence estimates of combined subtypes of anxiety and depressive disorders were respectively (a) 5...
April 6, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29748110/interoceptive-processing-deficit-a-behavioral-marker-for-subtyping-parkinson-s-disease
#9
Gabriella Santangelo, Carmine Vitale, Chiara Baiano, Alfonsina D'Iorio, Katia Longo, Paolo Barone, Marianna Amboni, Massimiliano Conson
BACKGROUND: Non-motor symptoms in Parkinson's disease (PD), such as cognitive, emotional, autonomic and somatosensory alterations, are not ubiquitous but vary between the tremor dominant (TD) and postural instability/gait difficulty (PIGD) subtypes of the syndrome. Non-motor phenomena (e.g., anxiety, depression and apathy) have been related to representation of autonomic and somatosensory sensations (interoception), and recent findings suggest interoceptive deficits in PD. OBJECTIVES: To test whether interoceptive processing is differently affected in TD and PIGD phenotypes, by assessing both interoceptive accuracy and sensibility in PD patients with TD and PIGD subtypes, and in healthy controls...
May 5, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29747137/mood-instability-as-a-predictor-of-clinical-and-functional-outcomes-in-adolescents-with-bipolar-i-and-bipolar-ii-disorder
#10
Lisa A O'Donnell, Alissa J Ellis, Margaret M Van de Loo, Jonathan P Stange, David A Axelson, Robert A Kowatch, Christopher D Schneck, David J Miklowitz
BACKGROUND: Traditional assessment and treatment of bipolar disorder (BD) often overlooks an important feature of the illness, mood instability (MI). MI - the presence of intense, rapidly shifting emotional states - is associated with a number of poor prognostic outcomes. This study examined whether MI among adolescents with BD was cross-sectionally related to bipolar subtype (I vs. II) and prognostically associated with symptoms and functioning over 3 months. METHODS: Participants included 145 adolescents (mean age: 15...
April 9, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29742543/psychometric-properties-and-factor-structure-of-a-new-scale-to-measure-hyperacusis-introducing-the-inventory-of-hyperacusis-symptoms
#11
Benjamin Greenberg, Megan Carlos
OBJECTIVES: Despite increasing interest in hyperacusis and other disorders of auditory sensitivity, there is still a lack of valid, standardized assessment tools to measure symptom severity, treatment outcomes, and diagnostic differentiation. Accordingly, this study sought to create a new scale that is reliable, valid, brief, and easy to score with the purpose of filling this gap. DESIGN: Original items were constructed through review of currently existing models of hyperacusis measurement, as well as qualitative data collected from professional audiologists and individuals reporting heightened audiological sensitivity with tinnitus...
May 8, 2018: Ear and Hearing
https://www.readbyqxmd.com/read/29742428/a-glutamate-homeostat-controls-the-presynaptic-inhibition-of-neurotransmitter-release
#12
Xiling Li, Pragya Goel, Joyce Wondolowski, Jeremy Paluch, Dion Dickman
We have interrogated the synaptic dialog that enables the bi-directional, homeostatic control of presynaptic efficacy at the glutamatergic Drosophila neuromuscular junction (NMJ). We find that homeostatic depression and potentiation use disparate genetic, induction, and expression mechanisms. Specifically, homeostatic potentiation is achieved through reduced CaMKII activity postsynaptically and increased abundance of active zone material presynaptically at one of the two neuronal subtypes innervating the NMJ, while homeostatic depression occurs without alterations in CaMKII activity and is expressed at both neuronal subtypes...
May 8, 2018: Cell Reports
https://www.readbyqxmd.com/read/29736744/antidepressant-efficacy-and-tolerability-of-ketamine-and-esketamine-a-critical-review
#13
REVIEW
P Molero, J A Ramos-Quiroga, R Martin-Santos, E Calvo-Sánchez, L Gutiérrez-Rojas, J J Meana
Ketamine and its enantiomer S-ketamine (esketamine) are promising candidates to produce a rapid-onset antidepressant effect in treatment-resistant depression. Ketamine causes continued blockade of the glutamate N-methyl-D-aspartate (NMDA) receptor, though this might not primarily mediate the antidepressant effect. Alternative hypotheses include selectivity for the NMDA receptor subtype containing the NMDA receptor subunit 2B (NR2B), inhibition of the phosphorylation of the eukaryotic elongation factor 2 (eEF2) kinase, increased expression of brain-derived neurotrophic factor (BDNF) and tropomyosin receptor kinase B (TrKB), and activation of the mammalian target of rapamycin (mTOR) signaling pathway, alongside other independent actions attributed to the ketamine metabolism to R-hydroxynorketamine (R-HNK)...
May 7, 2018: CNS Drugs
https://www.readbyqxmd.com/read/29736067/mix-headache-a-valid-clinical-entity
#14
Tapas Kumar Aich, Uttam Gupta, Sandip Subedi
Background: Chronic daily headache (CDH) patients respond better with a combination of anti-migraine and anti-stress medications, irrespective of clinical diagnosis of chronic migraine (CM) or chronic tension-type headache (CTTH). Hypothesis: "CDH: Mix headache" type is a valid clinical entity. Materials and Methods: A total of 70 participants fulfilling the diagnosis of "primary CDH", aged between 15 and 55 years were taken up for the present study...
January 2018: Indian Journal of Psychiatry
https://www.readbyqxmd.com/read/29734455/response-to-agomelatine-treatment-is-independent-of-smoking-status-and-dosage-results-from-the-agopsych-study
#15
Susanne Englisch, Hanna Sophie Jung, Antje Lewien, Anna Becker, Ulrike Nowak, Hanna Braun, Sarah Eisenacher, Jascha Thiem, Andreas Meyer-Lindenberg, Mathias Zink
INTRODUCTION: Cigarette smoking influences response to antidepressant treatment. It accelerates the metabolism of several cytochrome P450 (CYP) subtypes, including CYP1A2, and therefore bears the risk of pharmacokinetic interactions with psychotropic drugs using that pathway. Agomelatine is a substrate of CYP1A2; the association between nicotine use and agomelatine dosage, however, has never been studied before. METHODS: Smoking habits were correlated with agomelatine doses and treatment outcomes in a sample of 27 patients with lifetime diagnoses within the schizophrenia spectrum who received agomelatine treatment in addition to their stable antipsychotic treatment regimen because of depressive symptoms...
May 7, 2018: Pharmacopsychiatry
https://www.readbyqxmd.com/read/29734096/does-recent-mania-affect-response-to-antidepressants-in-bipolar-disorder-a-re-analysis-of-step-bd-data
#16
Zahra Mousavi, Sheri Johnson, Descartes Li
BACKGROUND: One previous study suggested that the presence of a manic episode before bipolar depression is related to worse response to antidepressants. METHOD: To examine this effect in a larger sample, we used data from the large, multi-site STEP-BD study. We hypothesized that among persons treated with antidepressants for bipolar depression, manic or mixed episodes before depression onset (as compared to euthymia) would predict lower rate of recovery, more sustained depressive symptoms and higher rate of switching into mania/hypomania after antidepressant treatment of bipolar depression...
April 22, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29706583/serotonergic-signaling-controls-input-specific-synaptic-plasticity-at-striatal-circuits
#17
Anna Cavaccini, Marta Gritti, Andrea Giorgi, Andrea Locarno, Nicolas Heck, Sara Migliarini, Alice Bertero, Maddalena Mereu, Giulia Margiani, Massimo Trusel, Tiziano Catelani, Roberto Marotta, Maria Antonietta De Luca, Jocelyne Caboche, Alessandro Gozzi, Massimo Pasqualetti, Raffaella Tonini
Monoaminergic modulation of cortical and thalamic inputs to the dorsal striatum (DS) is crucial for reward-based learning and action control. While dopamine has been extensively investigated in this context, the synaptic effects of serotonin (5-HT) have been largely unexplored. Here, we investigated how serotonergic signaling affects associative plasticity at glutamatergic synapses on the striatal projection neurons of the direct pathway (dSPNs). Combining chemogenetic and optogenetic approaches reveals that impeding serotonergic signaling preferentially gates spike-timing-dependent long-term depression (t-LTD) at thalamostriatal synapses...
April 25, 2018: Neuron
https://www.readbyqxmd.com/read/29703644/comparison-of-two-motor-subtype-classifications-in-de-novo-parkinson-s-disease
#18
Seong-Min Choi, Byeong C Kim, Bang-Hoon Cho, Kyung Wook Kang, Kang-Ho Choi, Joon-Tae Kim, Seung-Han Lee, Man-Seok Park, Myeong-Kyu Kim, Ki-Hyun Cho
BACKGROUND: Clinical subtypes of Parkinson's disease (PD) have been empirically defined based on the prominent motor symptoms. The aim of this study was to compare the prevalence of non-motor symptoms across PD motor subtypes in patients with PD. METHODS: A total of 192 patients with de novo PD were included. The patients were classified into the tremor-dominant/mixed/akinetic-rigid (TD/mixed/AR) and tremor-dominant/mixed/postural instability and gait disturbance (TD/mixed/PIGD) subtypes, according to previous reports...
April 18, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29702301/a-quantitative-review-on-outcome-to-antidepressants-in-melancholic-unipolar-depression
#19
REVIEW
Marina P Valerio, Alejandro G Szmulewicz, Diego J Martino
The aim of this study was to explore outcome to antidepressants profile in melancholic unipolar depression. We conducted a systematic review of electronic databases and meta-analysis of randomized and nonrandomized trials comparing: 1) outcome to antidepressants and placebo between melancholic and non-melancholic depression; 2) outcome to different antidepressant classes in melancholic depression. Two outcomes were considered: clinical remission and response. Significant lower odds of remission to antidepressants in melancholic than in non-melancholic depressions were found...
April 13, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29702176/bipolar-affective-disorder-and-borderline-personality-disorder-differentiation-based-on-the-history-of-early-life-stress-and-psychoneuroendocrine-measures
#20
Angela Kaline Mazer, Anthony J Cleare, Allan H Young, Mario F Juruena
INTRODUCTION: Borderline Personality Disorder (BPD) and Bipolar Affective Disorder (BD) have clinical characteristics in common which often make their differential diagnosis difficult. The history of early life stress (ELS) may be a differentiating factor between BPD and BD, as well as its association with clinical manifestations and specific neuroendocrine responses in each of these diagnoses. OBJECTIVE: Assessing and comparing patients with BD and BPD for factors related to symptomatology, etiopathogenesis and neuroendocrine markers...
April 24, 2018: Behavioural Brain Research
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