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Imaging in Psychiatry

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https://www.readbyqxmd.com/read/28141710/the-curse-of-the-dolphins-cognitive-decline-and-psychosis
#1
Randall Phelps, Anne Tsai, Arlene Hagen, Joseph Pinter, Raegan Smith, Martin T Stein
Isela is an 11-year-old Mexican-American girl with mild intellectual disability. During a vacation with her family, she went swimming with dolphins. A few days later, Isela awoke at night with laughing spells; during the day, she was pacing, aggressive, and had a decline in self-care and communication skills. Her parents attributed the symptoms to the dolphins. She was evaluated by a pediatric neurologist. The sleep-deprived electroencephalogram, brain magnetic resonance imaging, lumbar puncture, and thyroid function tests were normal...
February 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28127931/public-attitudes-towards-psychiatry-and-psychiatric-treatment-at-the-beginning-of-the-21st-century-a-systematic-review-and-meta-analysis-of-population-surveys
#2
Matthias C Angermeyer, Sandra van der Auwera, Mauro G Carta, Georg Schomerus
Public attitudes towards psychiatry are crucial determinants of help-seeking for mental illness. It has been argued that psychiatry as a discipline enjoys low esteem among the public, and a "crisis" of psychiatry has been noted. We conducted a systematic review and meta-analysis of population studies examining public attitudes towards various aspects of psychiatric care. Our search in PubMed, Web of Science, PsychINFO and bibliographies yielded 162 papers based on population surveys conducted since 2000 and published no later than 2015...
February 2017: World Psychiatry: Official Journal of the World Psychiatric Association (WPA)
https://www.readbyqxmd.com/read/28115743/adnp-nap-dramatically-increase-microtubule-end-binding-protein-tau-interaction-a-novel-avenue-for-protection-against-tauopathy
#3
Y Ivashko-Pachima, C Laura Sayas, A Malishkevich, I Gozes
Activity-dependent neuroprotective protein (ADNP), vital for brain formation and cognitive function, is mutated in autism and linked to neurodegenerative/psychiatric diseases. An eight-amino-acid peptide snippet of ADNP, NAP (NAPVSIPQ), identified as a smallest active fragment, includes the SxIP microtubule (MT) end-binding protein (EB) association motif, and enhances ADNP-EB3 interaction. Depletion of EB1 or EB3 abolishes NAP protection against zinc intoxication. Furthermore, NAP enhances Tau-MT interaction, and Tau regulates the localization and function of EB1 and EB3 in developing neuronal cells...
January 24, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28115738/glutamate-imaging-glucest-reveals-lower-brain-glucest-contrast-in-patients-on-the-psychosis-spectrum
#4
D R Roalf, R P R Nanga, P E Rupert, H Hariharan, M Quarmley, M E Calkins, E Dress, K Prabhakaran, M A Elliott, P J Moberg, R C Gur, R E Gur, R Reddy, B I Turetsky
Psychosis commonly develops in adolescence or early adulthood. Youths at clinical high risk (CHR) for psychosis exhibit similar, subtle symptoms to those with schizophrenia (SZ). Malfunctioning neurotransmitter systems, such as glutamate, are implicated in the disease progression of psychosis. Yet, in vivo imaging techniques for measuring glutamate across the cortex are limited. Here, we use a novel 7 Tesla MRI glutamate imaging technique (GluCEST) to estimate changes in glutamate levels across cortical and subcortical regions in young healthy individuals and ones on the psychosis spectrum...
January 24, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28107727/neural-correlates-of-subliminally-presented-visual-sexual-stimuli
#5
Martina Wernicke, Corinna Hofter, Kirsten Jordan, Peter Fromberger, Peter Dechent, Jürgen L Müller
In the context of forensic psychiatry, it is crucial that diagnoses of deviant sexual interests are resistant to manipulation. In a first attempt to promote the development of such tools, the current fMRI study focusses on the examination of hemodynamic responses to preferred, in contrast to non-preferred, sexual stimuli with and without explicit sexual features in 24 healthy heterosexual subjects. The subliminal stimulus presentation of sexual stimuli could be a new approach to reduce vulnerability to manipulation...
January 17, 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28093569/translational-evaluation-of-translocator-protein-as-a-marker-of-neuroinflammation-in-schizophrenia
#6
T Notter, J M Coughlin, T Gschwind, U Weber-Stadlbauer, Y Wang, M Kassiou, A C Vernon, D Benke, M G Pomper, A Sawa, U Meyer
Positron emission tomography (PET) imaging with radiotracers that target translocator protein 18 kDa (TSPO) has become a popular approach to assess putative neuroinflammatory processes and associated microglia activation in psychotic illnesses. It remains unclear, however, whether TSPO imaging can accurately capture low-grade inflammatory processes such as those present in schizophrenia and related disorders. Therefore, we evaluated the validity of TSPO as a disease-relevant marker of inflammation using a translational approach, which combined neurodevelopmental and neurodegenerative mouse models with PET imaging in patients with recent-onset schizophrenia and matched controls...
January 17, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28093567/beta-amyloid-sequelae-in-the-eye-a-critical-review-on-its-diagnostic-significance-and-clinical-relevance-in-alzheimer-s-disease
#7
REVIEW
T M Shah, S M Gupta, P Chatterjee, M Campbell, R N Martins
Alzheimer's disease (AD) is a progressive and fatal neurodegenerative disorder. There is no test for its definitive diagnosis in routine clinical practice. Although phase III clinical trials have failed, only symptomatic treatment is currently available; a possible reason for these failed trials is that intervention commenced at an advanced stage of the disease. The hallmarks of an AD brain include plaques comprising of extracellular beta-amyloid (Aβ) protein aggregates and intracellular hyperphosphorylated neurofibrillary tangles of tau...
January 17, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28067006/addressing-reverse-inference-in-psychiatric-neuroimaging-meta-analyses-of-task-related-brain-activation-in-common-mental-disorders
#8
Emma Sprooten, Alexander Rasgon, Morgan Goodman, Ariella Carlin, Evan Leibu, Won Hee Lee, Sophia Frangou
Functional magnetic resonance imaging (fMRI) studies in psychiatry use various tasks to identify case-control differences in the patterns of task-related brain activation. Differently activated regions are often ascribed disorder-specific functions in an attempt to link disease expression and brain function. We undertook a systematic meta-analysis of data from task-fMRI studies to examine the effect of diagnosis and study design on the spatial distribution and direction of case-control differences on brain activation...
January 9, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28065850/deep-grey-matter-iron-accumulation-in-alcohol-use-disorder
#9
Michal Juhás, Hongfu Sun, Matthew R G Brown, Marnie B MacKay, Karl F Mann, Wolfgang H Sommer, Alan H Wilman, Serdar M Dursun, Andrew J Greenshaw
PURPOSE: Evaluate brain iron accumulation in alcohol use disorder (AUD) patients compared to controls using quantitative susceptibility mapping (QSM). METHODS: QSM was performed retrospectively by using phase images from resting state functional magnetic resonance imaging (fMRI). 20 male AUD patients and 15 matched healthy controls were examined. Susceptibility values were manually traced in deep grey matter regions including caudate nucleus, combined putamen and globus pallidus, combined substantia nigra and red nucleus, dentate nucleus, and a reference white matter region in the internal capsule...
January 5, 2017: NeuroImage
https://www.readbyqxmd.com/read/28064175/neuroimaging-of-inflammation-in-memory-and-related-other-disorders-nimrod-study-protocol-a-deep-phenotyping-cohort-study-of-the-role-of-brain-inflammation-in-dementia-depression-and-other-neurological-illnesses
#10
W Richard Bevan-Jones, Ajenthan Surendranathan, Luca Passamonti, Patricia Vázquez Rodríguez, Robert Arnold, Elijah Mak, Li Su, Jonathan P Coles, Tim D Fryer, Young T Hong, Guy Williams, Franklin Aigbirhio, James B Rowe, John T O'Brien
INTRODUCTION: Inflammation of the central nervous system is increasingly regarded as having a role in cognitive disorders such as dementia and depression, but it is not clear how such inflammation relates to other aspects of neuropathology, structural and functional changes in the brain and symptoms (as assessed via clinical and neuropsychological assessment and MRI). This study will explore these pathophysiological mechanisms using positron emission tomography (PET) which allows in vivo imaging of inflammation, amyloid and τ deposition, together with neuropsychological profiling, MRI and peripheral biomarker analysis...
January 7, 2017: BMJ Open
https://www.readbyqxmd.com/read/28041692/neurofeedback-one-of-today-s-techniques-in-psychiatry
#11
M Arns, J-M Batail, S Bioulac, M Congedo, C Daudet, D Drapier, T Fovet, R Jardri, M Le-Van-Quyen, F Lotte, D Mehler, J-A Micoulaud-Franchi, D Purper-Ouakil, F Vialatte
OBJECTIVES: Neurofeedback is a technique that aims to teach a subject to regulate a brain parameter measured by a technical interface to modulate his/her related brain and cognitive activities. However, the use of neurofeedback as a therapeutic tool for psychiatric disorders remains controversial. The aim of this review is to summarize and to comment the level of evidence of electroencephalogram (EEG) neurofeedback and real-time functional magnetic resonance imaging (fMRI) neurofeedback for therapeutic application in psychiatry...
December 29, 2016: L'Encéphale
https://www.readbyqxmd.com/read/28032161/psychological-and-psychiatric-traits-in-post-bariatric-patients-asking-for-body-contouring-surgery
#12
Chiara Pavan, Massimo Marini, Eleonora De Antoni, Carlotta Scarpa, Tito Brambullo, Franco Bassetto, Annapina Mazzotta, Vincenzo Vindigni
BACKGROUNDS: Obese patients, mainly females, feel uncomfortable and unsatisfied with their physical appearance; they have a wrong perception of their image and consequently diminish their self-esteem, sometimes showing difficulties in functional areas such as work, relationship, social activity. Beside health concerns, improving their appearance and body image are often common motives for weight loss in obese individuals and after weight loss about 30% of bariatric surgery patients undergo plastic surgical correction of excessive skin...
December 28, 2016: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/27994220/structural-dysconnectivity-of-key-cognitive-and-emotional-hubs-in-young-people-at-high-genetic-risk-for-bipolar-disorder
#13
G Roberts, A Perry, A Lord, A Frankland, V Leung, E Holmes-Preston, F Levy, R K Lenroot, P B Mitchell, M Breakspear
Emerging evidence suggests that psychiatric disorders are associated with disturbances in structural brain networks. Little is known, however, about brain networks in those at high risk (HR) of bipolar disorder (BD), with such disturbances carrying substantial predictive and etiological value. Whole-brain tractography was performed on diffusion-weighted images acquired from 84 unaffected HR individuals with at least one first-degree relative with BD, 38 young patients with BD and 96 matched controls (CNs) with no family history of mental illness...
December 20, 2016: Molecular Psychiatry
https://www.readbyqxmd.com/read/27987558/recent-developments-in-molecular-brain-imaging-of-neuropsychiatric-disorders
#14
REVIEW
Mark Slifstein, Anissa Abi-Dargham
Molecular imaging with PET or SPECT has been an important research tool in psychiatry for as long as these modalities have been available. Here, we discuss two areas of neuroimaging relevant to current psychiatry research. The first is the use of imaging to study neurotransmission. We discuss the use of pharmacologic probes to induce changes in levels of neurotransmitters that can be inferred through their effects on outcome measures of imaging experiments, from their historical origins focusing on dopamine transmission through recent developments involving serotonin, GABA, and glutamate...
January 2017: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/27986430/computational-approaches-to-schizophrenia-a-perspective-on-negative-symptoms
#15
REVIEW
Lorenz Deserno, Andreas Heinz, Florian Schlagenhauf
Schizophrenia is a heterogeneous spectrum disorder often associated with detrimental negative symptoms. In recent years, computational approaches to psychiatry have attracted growing attention. Negative symptoms have shown some overlap with general cognitive impairments and were also linked to impaired motivational processing in brain circuits implementing reward prediction. In this review, we outline how computational approaches may help to provide a better understanding of negative symptoms in terms of the potentially underlying behavioural and biological mechanisms...
December 13, 2016: Schizophrenia Research
https://www.readbyqxmd.com/read/27976785/-the-importance-of-neuropsychological-assessment-for-forensic-psychiatric-evaluations-of-defendants
#16
S N T M Schouws, C Jonker, G Meynen
In criminal law, increased interest is being shown in brain disorders, cognitive impairment and neuroimaging, particularly in connection with pre-trial reports. In a number of cases the contribution made by neuropsychology to the forensic diagnosis is considerable, and there is a need for further clarification.<br/> AIM: To clarify the relevance of the neuropsychological assessment of suspects and to explore the implications for forensic psychiatry.<br/> METHOD: We discuss recent literature and present a characteristic case selected from the Dutch jurisdiction...
2016: Tijdschrift Voor Psychiatrie
https://www.readbyqxmd.com/read/27956745/altered-brain-processing-of-decision-making-in-healthy-first-degree-biological-relatives-of-suicide-completers
#17
Y Ding, F Pereira, A Hoehne, M-M Beaulieu, M Lepage, G Turecki, F Jollant
Suicidal behavior is heritable, with the transmission of risk being related to the transmission of vulnerability traits. Previous studies suggest that risky decision-making may be an endophenotype of suicide. Here, we aimed at investigating brain processing of decision-making in relatives of suicide completers in order to shed light on heritable mechanisms of suicidal vulnerability. Seventeen healthy first-degree biological relatives of suicide completers with no personal history of suicidal behavior, 16 relatives of depressed patients without any personal or family history of suicidal behavior, and 19 healthy controls were recruited...
December 13, 2016: Molecular Psychiatry
https://www.readbyqxmd.com/read/27956742/17q21-31-duplication-causes-prominent-tau-related-dementia-with-increased-mapt-expression
#18
K Le Guennec, O Quenez, G Nicolas, D Wallon, S Rousseau, A-C Richard, J Alexander, P Paschou, C Charbonnier, C Bellenguez, B Grenier-Boley, D Lechner, M-T Bihoreau, R Olaso, A Boland, V Meyer, J-F Deleuze, P Amouyel, H M Munter, G Bourque, M Lathrop, T Frebourg, R Redon, L Letenneur, J-F Dartigues, O Martinaud, O Kalev, S Mehrabian, L Traykov, T Ströbel, I Le Ber, P Caroppo, S Epelbaum, T Jonveaux, F Pasquier, A Rollin-Sillaire, E Génin, L Guyant-Maréchal, G G Kovacs, J-C Lambert, D Hannequin, D Campion, A Rovelet-Lecrux
To assess the role of rare copy number variations in Alzheimer's disease (AD), we conducted a case-control study using whole-exome sequencing data from 522 early-onset cases and 584 controls. The most recurrent rearrangement was a 17q21.31 microduplication, overlapping the CRHR1, MAPT, STH and KANSL1 genes that was found in four cases, including one de novo rearrangement, and was absent in controls. The increased MAPT gene dosage led to a 1.6-1.9-fold expression of the MAPT messenger RNA. Clinical signs, neuroimaging and cerebrospinal fluid biomarker profiles were consistent with an AD diagnosis in MAPT duplication carriers...
December 13, 2016: Molecular Psychiatry
https://www.readbyqxmd.com/read/27936900/real-time-functional-mri-training-to-decrease-motion-in-imaging-studies-lack-of-significant-improvement
#19
Tessy M Lal, Philip R Baldwin, Ming-Bo Cai, Ricky R Savjani, David M Eagleman, David Ress, Ramiro Salas
Functional magnetic resonance imaging (fMRI) is widely used to study brain circuitry in healthy controls and in psychiatry. A major problem of fMRI studies is motion, which affects the quality of images, is a major source of noise, and can confound data if, for example, the experimental groups move differently. Despite continual reminders to experimental subjects about keeping still, however, movement in the scanner remains a problem. The authors hypothesized that showing head movement during a scanning session may help subjects learn how to keep their head still...
2016: Bulletin of the Menninger Clinic
https://www.readbyqxmd.com/read/27922605/pattern-of-structural-brain-changes-in-social-anxiety-disorder-after-cognitive-behavioral-group-therapy-a-longitudinal-multimodal-mri-study
#20
V R Steiger, A B Brühl, S Weidt, A Delsignore, M Rufer, L Jäncke, U Herwig, J Hänggi
Social anxiety disorder (SAD) is characterized by fears of social and performance situations. Cognitive behavioral group therapy (CBGT) has in general positive effects on symptoms, distress and avoidance in SAD. Prior studies found increased cortical volumes and decreased fractional anisotropy (FA) in SAD compared with healthy controls (HCs). Thirty-three participants diagnosed with SAD attended in a 10-week CBGT and were scanned before and after therapy. We applied three neuroimaging methods-surface-based morphometry, diffusion tensor imaging and network-based statistics-each with specific longitudinal processing protocols, to investigate CBGT-induced structural brain alterations of the gray and white matter (WM)...
December 6, 2016: Molecular Psychiatry
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