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https://www.readbyqxmd.com/read/28179035/impact-of-deep-brain-stimulation-of-the-ventral-anterior-limb-of-the-internal-capsule-on-cognition-in-depression
#1
I O Bergfeld, M Mantione, M L C Hoogendoorn, H G Ruhé, F Horst, P Notten, J van Laarhoven, P van den Munckhof, G Beute, P R Schuurman, D Denys
BACKGROUND: Preliminary studies report no negative and a possible positive impact of deep brain stimulation (DBS) on cognition of patients with treatment-resistant depression (TRD). However, these studies neither controlled for practice effects nor compared active with sham stimulation. METHOD: To address these limitations, we compared 25 TRD patients, who underwent DBS of the ventral anterior limb of the internal capsule (vALIC), with 21 healthy controls (HCs) matched on gender, age and education level...
February 9, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28170003/brain-volumetric-and-metabolic-correlates-of-electroconvulsive-therapy-for-treatment-resistant-depression-a-longitudinal-neuroimaging-study
#2
M Cano, I Martínez-Zalacaín, Á Bernabéu-Sanz, O Contreras-Rodríguez, R Hernández-Ribas, E Via, A de Arriba-Arnau, V Gálvez, M Urretavizcaya, J Pujol, J M Menchón, N Cardoner, C Soriano-Mas
Recent research suggests that neuroplastic and neuroinflammatory changes may account for the mode of action of electroconvulsive therapy (ECT), although extant data do not allow for a clear disambiguation between these two hypotheses. Multimodal neuroimaging approaches (for example, combining structural and metabolic information) may help in clarifying this issue. Here we aimed to assess longitudinal changes in (i) regional gray matter (GM) volumes and (ii) hippocampal metabolite concentrations throughout an acute course of bitemporal ECT, as well as (iii) to determine the association between imaging changes and clinical improvement...
February 7, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28159550/characterization-of-the-diversity-of-t-cell-receptor-%C3%AE-%C3%AE-complementary-determinant-region-3-in-human-peripheral-blood-by-immune-repertoire-sequencing
#3
Hui Chen, Mingjin Zou, Da Teng, Jianmin Zhang, Wei He
γδ T cells function as sentinels in early host response to infections and malignancies. Although γδ T cells are regarded as innate immune cells and recognize antigens in a non-MHC restricted manner, they possess a huge diversity of complementary determinant region 3 (CDR3) of T cell receptor (TCR) generated by the rearrangement of germ-line gene V- (D) -J-C fragments. However, the detailed characteristics of the TCRγδ CDR3 repertoire remain unclear. A comprehensive analysis would answer fundamental questions about the diversity of the TCRγδ CDR3 repertoire and elucidate the mechanism underlying γδ T cell recognition of pathogens and tumor antigens...
January 31, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28154905/changes-in-dorsolateral-prefrontal-connectivity-after-rtms-in-treatment-resistant-depression-a-brain-perfusion-spect-study
#4
Raphaëlle Richieri, Damien Jouvenoz, Antoine Verger, Patrick Fiat, Laurent Boyer, Christophe Lançon, Eric Guedj
PURPOSE: Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive and safe alternative to electroconvulsive therapy for treatment-resistant depression (TRD). After rTMS, changes in brain SPECT perfusion have been remotely identified within medial temporal limbic areas, while no local effects have been found within the left dorsolateral prefrontal cortex (DLPFC)-i.e. under the coil. Functional changes in connectivity may underlie these remote effects. Interestingly, functional connectivity has been recently investigated using perfusion SPECT, and abnormalities identified in TRD patients...
February 3, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28142056/using-probabilistic-tractography-to-target-the-subcallosal-cingulate-cortex-in-patients-with-treatment-resistant-depression
#5
Evangelia Tsolaki, Randall Espinoza, Nader Pouratian
The lack of efficacy of deep brain stimulation (DBS) of subcallosal cingulate (SCC) in treatment resistant depression (TRD) may be due in part to suboptimal targeting. In two patients treated with SCC DBS for TRD we assessed the voxel-wise probabilistic connectivity of SCC with four tractography-defined target areas implicated in depression, thereby identifying the tractography-optimized target (TOT). Compared to the non-responder, the responder's DBS leads were implanted and stimulation was delivered closer to the TOT...
January 20, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28138040/comparative-effects-of-ly3020371-a-potent-and-selective-mglu2-3-receptor-antagonist-and-ketamine-a-non-competitive-nmda-receptor-antagonist-in-rodents-evidence-supporting-use-for-the-treatment-of-depression
#6
Jeffrey M Witkin, Stephen Mitchell, Keith Wafford, Guy Carter, Gary Gilmour, Jennifer Li, Brian Eastwood, Carl Overshiner, Xia Li, Linda Rorick-Kehn, Kurt Rasmussen, Wesley Anderson, Alexander Nikolayev, Vladamir Tolstikov, Ming-Shang Kuo, John Catlow, Renhua Li, Stephen Smith, Charles Mitch, Paul Ornstein, Stephen Swanson, James Monn
The ability of the NMDA receptor antagonist ketamine to alleviate symptoms in patients suffering from treatment resistant depression (TRD) is well documented. In this report, we directly compare in vivo biological responses in rodents elicited by a recently discovered mGlu2/3 receptor antagonist (LY3020371) with those produced by ketamine. Both LY3020371 and ketamine increased the number of spontaneously active DA cells in the ventral tegmental area of anesthetized rats, increased O2 in the anterior cingulate cortex, promoted wakefulness, enhanced the efflux of biogenic amines in the prefrontal cortex, and produced antidepressant-related behavioral effects in SSRI-sensitive and -insensitive rodent models...
January 30, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28124853/ketamine-future-treatment-for-unresponsive-depression
#7
M Frere, J Tepper
Major Depressive Disorder (MDD) is a debilitating mental health condition which accounts for a significant portion of worldwide disability. Historically, the suggested pharmacotherapy to treat MDD have been monoaminergic-acting antidepressants, such as SSRIs or SNRIs. These drugs can provide relief, but often take weeks to noticeably improve depressive symptoms and are not always effective, leading to a condition known as Treatment-Resistant Depression (TRD). It is believed that 50% MDD sufferers in Ireland suffer from TRD, and thus the development of improved pharmacotherapies is necessary...
September 9, 2016: Irish Medical Journal
https://www.readbyqxmd.com/read/28104695/infectious-disease-risk-and-international-tourism-demand
#8
Jaume Rosselló, Maria Santana-Gallego, Waqas Awan
CONTEXT:  For some countries, favourable climatic conditions for tourism are often associated with favourable conditions for infectious diseases, with the ensuing development constraints on the tourist sectors of impoverished countries where tourism's economic contribution has a high potential. This paper evaluates the economic implications of eradication of Malaria, Dengue, Yellow Fever and Ebola on the affected destination countries focusing on the tourist expenditures. METHODS:  A gravity model for international tourism flows is used to provide an estimation of the impact of each travel-related disease on international tourist arrivals...
January 18, 2017: Health Policy and Planning
https://www.readbyqxmd.com/read/28092469/investigational-drugs-in-recent-clinical-trials-for-treatment-resistant-depression
#9
Ricardo P Garay, Carlos A Zarate, Thomas Charpeaud, Leslie Citrome, Christoph U Correll, Ahcène Hameg, Pierre-Michel Llorca
The authors describe the medications for treatment-resistant depression (TRD) in phase II/III of clinical development in the EU and US and provide an opinion on how current treatment can be improved in the near future. Areas covered: Sixty-two trials were identified in US and EU clinical trial registries that included six investigational compounds in recent phase III development and 12 others in recent phase II clinical trials. Glutamatergic agents have been the focus of many studies. A single intravenous dose of the glutamatergic modulator ketamine produces a robust and rapid antidepressant effect in persons with TRD; this effect continues to remain significant for 1 week...
January 16, 2017: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/28068461/a-new-prediction-model-for-evaluating-treatment-resistant-depression
#10
Alexander Kautzky, Pia Baldinger-Melich, Georg S Kranz, Thomas Vanicek, Daniel Souery, Stuart Montgomery, Julien Mendlewicz, Joseph Zohar, Alessandro Serretti, Rupert Lanzenberger, Siegfried Kasper
OBJECTIVE: Despite a broad arsenal of antidepressants, about a third of patients suffering from major depressive disorder (MDD) do not respond sufficiently to adequate treatment. Using the data pool of the Group for the Study of Resistant Depression and machine learning, we intended to draw new insights featuring 48 clinical, sociodemographic, and psychosocial predictors for treatment outcome. METHOD: Patients were enrolled starting from January 2000 and diagnosed according to DSM-IV...
January 3, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28035869/comparative-efficacy-and-tolerability-of-pharmacological-and-somatic-interventions-in-adult-patients-with-treatment-resistant-depression-a-systematic-review-and-network-meta-analysis
#11
Katerina Papadimitropoulou, Carla Vossen, Andreas Karabis, Christina Donatti, Nicole Kubitz
OBJECTIVE: Major depressive disorder (MDD) affects about 10-15% of the general population in a lifetime. A considerable number of patients fail to achieve full symptom remission despite adequate treatment and are considered treatment resistant (TRD). The current study compared the relative efficacy and tolerability of pharmacological and somatic TRD interventions by means of a Bayesian network meta-analysis. RESEARCH DESIGN AND METHODS: An electronic literature search of MEDLINE, MEDLINE In-Process, EMBASE, PsycInfo, EconLit and Cochrane Library databases for trials published between September 2003 and September 2014 was conducted...
February 6, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28012713/accurate-quantification-of-t-cells-by-measuring-loss-of-germline-t-cell-receptor-loci-with-generic-single-duplex-droplet-digital-pcr-assays
#12
Willem H Zoutman, Rogier J Nell, Mieke Versluis, Debby van Steenderen, Rajshri N Lalai, Jacoba J Out-Luiting, Mark J de Lange, Maarten H Vermeer, Anton W Langerak, Pieter A van der Velden
Quantifying T cells accurately in a variety of tissues of benign, inflammatory, or malignant origin can be of great importance in a variety of clinical applications. Flow cytometry and immunohistochemistry are considered to be gold-standard methods for T-cell quantification. However, these methods require fresh, frozen, or fixated cells and tissue of a certain quality. In addition, conventional and droplet digital PCR (ddPCR), whether followed by deep sequencing techniques, have been used to elucidate T-cell content by focusing on rearranged T-cell receptor (TCR) genes...
December 22, 2016: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/27994542/the-retrograde-connections-and-anatomical-segregation-of-the-g%C3%A3-ttingen-minipig-nucleus-accumbens
#13
Anders C Meidahl, Dariusz Orlowski, Jens C H Sørensen, Carsten R Bjarkam
Nucleus accumbens (NAcc) has been implicated in several psychiatric disorders such as treatment resistant depression (TRD), and obsessive-compulsive disorder (OCD), and has been an ongoing experimental target for deep brain stimulation (DBS) in both rats and humans. In order to translate basic scientific results from rodents to the human setting a large animal model is needed to thoroughly study the effect of such therapeutic interventions. The aim of the study was, accordingly, to describe the basic anatomy of the Göttingen minipig NAcc and its retrograde connections...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27976600/clinical-improvements-following-bilateral-anterior-capsulotomy-in-treatment-resistant-depression
#14
L Subramanian, T Bracht, P Jenkins, S Choppin, D E J Linden, G Phillips, B A Simpson
BACKGROUND: The purpose of this study was to evaluate a programme of lesion surgery carried out on patients with treatment-resistant depression (TRD). METHOD: This was a retrospective study looking at clinical and psychometric data from 45 patients with TRD who had undergone bilateral stereotactic anterior capsulotomy surgery over a period of 15 years, with the approval of the Mental Health Act Commission (37 with unipolar depression and eight with bipolar disorder)...
December 15, 2016: Psychological Medicine
https://www.readbyqxmd.com/read/27934881/the-relationship-between-cortical-inhibition-and-electroconvulsive-therapy-in-the-treatment-of-major-depressive-disorder
#15
Daphne Voineskos, Andrea J Levinson, Yinming Sun, Mera S Barr, Faranak Farzan, Tarek K Rajji, Paul B Fitzgerald, Daniel M Blumberger, Zafiris J Daskalakis
Dysfunctional cortical inhibition (CI) is postulated as a key neurophysiological mechanism in major depressive disorder. Electroconvulsive therapy (ECT) is the treatment of choice for resistant depression and ECT has been associated with enhanced CI. The objective of this study was to evaluate the relationship between CI and ECT response in resistant depression. Twenty-five patients with treatment resistant depression underwent an acute course of ECT. CI was indexed by the cortical silent period (CSP) and short-interval cortical inhibition (SICI), through TMS-EMG...
December 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27928376/macular-ganglion-cell-layer-and-peripapillary-retinal-nerve-fibre-layer-thickness-in-patients-with-unilateral-posterior-cerebral-artery-ischaemic-lesion-an-optical-coherence-tomography-study
#16
Rita Anjos, Luisa Vieira, Livio Costa, André Vicente, Arnaldo Santos, Nuno Alves, Duarte Amado, Joana Ferreira, João Paulo Cunha
The purpose of this study is to evaluate the macular ganglion cell layer (GCL) and peripapillary retinal nerve fibre layer (RNFL) thickness in patients with unilateral posterior cerebral artery (PCA) ischaemic lesions using spectral-domain optical coherence tomography (SD-OCT). A prospective, case-control study of patients with unilateral PCA lesion was conducted in the neuro-ophthalmology clinic of Centro Hospitalar Lisboa Central. Macular and peripapillary SD-OCT scans were performed in both eyes of each patient...
February 2016: Neuro-ophthalmology
https://www.readbyqxmd.com/read/27922640/brain-network-reorganization-differs-in-response-to-stress-in-rats-genetically-predisposed-to-depression-and-stress-resilient-rats
#17
N Gass, R Becker, A J Schwarz, W Weber-Fahr, C Clemm von Hohenberg, B Vollmayr, A Sartorius
Treatment-resistant depression (TRD) remains a pressing clinical problem. Optimizing treatment requires better definition of the specificity of the involved brain circuits. The rat strain bred for negative cognitive state (NC) represents a genetic animal model of TRD with high face, construct and predictive validity. Vice versa, the positive cognitive state (PC) strain represents a stress-resilient phenotype. Although NC rats show depressive-like behavior, some symptoms such as anhedonia require an external trigger, i...
December 6, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27872807/identification-of-the-stria-medullaris-thalami-using-diffusion-tensor-imaging
#18
Ryan B Kochanski, Robert Dawe, Daniel B Eddelman, Mehmet Kocak, Sepehr Sani
BACKGROUND: Deep brain stimulation (DBS) via anatomical targeting of white matter tracts defined by diffusion tensor imaging (DTI) may be a useful tool in the treatment of pathologic neurophysiologic circuits implicated in certain disease states like treatment resistant depression (TRD). We sought to determine if DTI could be used to define the stria medullaris thalami (SM), the major afferent white matter pathway to the lateral habenula (LHb), a thalamic nucleus implicated in the pathophysiology of TRD...
2016: NeuroImage: Clinical
https://www.readbyqxmd.com/read/27864716/single-incision-laparoscopic-surgery-increases-the-risk-of-unintentional-thermal-injury-from-the-monopolar-bovie-instrument-in-comparison-with-traditional-laparoscopy
#19
Nicole T Townsend, Edward L Jones, Doug Overbey, Bruce Dunne, Jennifer McHenry, Thomas N Robinson
BACKGROUND: Single-incision laparoscopic surgery (SILS) places multiple instruments in close, parallel proximity, an orientation that may have implications in the production of stray current from the monopolar "Bovie" instrument. The purpose of this study was to compare the energy transferred during SILS compared to traditional four-port laparoscopic surgery (TRD). METHOD: In a laparoscopic simulator, instruments were inserted via SILS or TRD setup. The monopolar generator delivered energy to a laparoscopic L-hook instrument for 5-s activations on 30-Watts coag mode...
November 18, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/27810712/sleep-architecture-parameters-as-a-putative-biomarker-of-suicidal-ideation-in-treatment-resistant-depression
#20
Rebecca A Bernert, David A Luckenbaugh, Wallace C Duncan, Naomi G Iwata, Elizabeth D Ballard, Carlos A Zarate
BACKGROUND: Disturbed sleep may confer risk for suicidal behaviors. Polysomnographic (PSG) sleep parameters have not been systematically evaluated in association with suicidal ideation (SI) among individuals with treatment-resistant depression (TRD). METHODS: This secondary data analysis included 54 TRD individuals (N=30 with major depressive disorder (MDD) and N=24 with bipolar depression (BD)). PSG sleep parameters included Sleep Efficiency (SE), Total Sleep Time (TST), Wakefulness After Sleep Onset (WASO), REM percent/latency, and non-REM (NREM) Sleep Stages 1-4...
January 15, 2017: Journal of Affective Disorders
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