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https://www.readbyqxmd.com/read/28607613/complex-fractionated-atrial-electrograms-high-dominant-frequency-regions-and-left-atrial-voltages-during-sinus-rhythm-and-atrial-fibrillation
#1
Naoko Sasaki, Ichiro Watanabe, Yasuo Okumura, Koichi Nagashima, Rikitake Kogawa, Kazumasa Sonoda, Kazuki Iso, Keiko Takahashi, Masaru Arai, Ryuta Watanabe, Sayaka Kurokawa, Kimie Ohkubo, Toshiko Nakai, Atsushi Hirayama, Mizuki Nikaido
BACKGROUND: Ablation targeting complex fractionated atrial electrograms (CFAEs) or high dominant frequency (DF) sites is generally effective for persistent atrial fibrillation (AF). CFAEs and/or high DF sites may exist in low-voltage regions, which theoretically represent abnormal substrates. However, whether CFAEs or high DF sites reflect low voltage substrates during sinus rhythm (SR) is unknown. METHODS: Sixteen patients with AF (8 with paroxysmal AF; 8, persistent AF) underwent high-density mapping of the left atrium (LA) with a 3-dimensional electroanatomic mapping system before ablation...
June 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28585513/meta-analysis-of-longitudinal-studies-of-cognition-in-bipolar-disorder-comparison-with-healthy-controls-and-schizophrenia
#2
E Bora, A Özerdem
BACKGROUND: Bipolar disorder (BP) is associated with significant cognitive impairment. Recent evidence suggests that cognitive deficits are already evident after first-episode mania. However, it is not clear whether BP is associated with further decline in cognitive functions in individuals with established illness. Aim of this meta-analytic review was to examine longitudinal neurocognitive changes in BP and to compare trajectory of cognitive deficits in BP with schizophrenia and healthy controls...
June 6, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28585221/vagal-nerve-stimulation-for-treatment-resistant-depression
#3
REVIEW
Flavia R Carreno, Alan Frazer
Major depressive disorder (MDD) is prevalent. Although standards antidepressants are more effective than placebo, up to 35% of patients do not respond to 4 or more conventional treatments and are considered to have treatment-resistant depression (TRD). Considerable effort has been devoted to trying to find effective treatments for TRD. This review focuses on vagus nerve stimulation (VNS), approved for TRD in 2005 by the Food and Drugs Administration. Stimulation is carried by bipolar electrodes on the left cervical vagus nerve, which are attached to an implanted stimulator generator...
June 5, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/28583708/prefrontal-fatty-acid-composition-in-schizophrenia-and-bipolar-disorder-association-with-reelin-expression
#4
Clare L Beasley, William G Honer, Alfredo Ramos-Miguel, Fidel Vila-Rodriguez, Alasdair M Barr
OBJECTIVE: The extracellular matrix protein reelin regulates early brain development and synaptic plasticity in adulthood. Reelin is decreased in the postmortem brain in schizophrenia patients. Reelin's two receptors, ApoER2 and VLDLR, are also substrates for ApoE - a key lipoprotein that regulates phospholipid homeostasis in the brain. The goal of the present study was therefore to examine phospholipids and their constituent fatty acids, and determine whether there is an association between reelin, its receptors and phospholipids in the brain...
June 2, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28581442/photopharmacological-control-of-bipolar-cells-restores-visual-function-in-blind-mice
#5
Laura Laprell, Ivan Tochitsky, Kuldeep Kaur, Michael B Manookin, Marco Stein, David M Barber, Christian Schön, Stylianos Michalakis, Martin Biel, Richard H Kramer, Martin P Sumser, Dirk Trauner, Russell N Van Gelder
Photopharmacological control of neuronal activity using synthetic photochromic ligands, or photoswitches, is a promising approach for restoring visual function in patients suffering from degenerative retinal diseases. Azobenzene photoswitches, such as AAQ and DENAQ, have been shown to restore the responses of retinal ganglion cells to light in mouse models of retinal degeneration but do not recapitulate native retinal signal processing. Here, we describe diethylamino-azo-diethylamino (DAD), a third-generation photoswitch that is capable of restoring retinal ganglion cell light responses to blue or white light...
June 5, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28576914/do-not-treat-the-numbers-lithium-toxicity
#6
Peter Foulser, Yasmin Abbasi, Anand Mathilakath, Ramin Nilforooshan
We describe the case of a 62-year-old man with a history of bipolar disorder, previously stable on lithium for over 20 years, who presented with a manic relapse and signs of lithium toxicity in the form of a coarse tremor. Serum lithium levels were in the normal range, and the patient had stage 3 chronic kidney disease. He was admitted for treatment under Section 2 of the Mental Health Act, and after stopping lithium was started on olanzapine. Signs of lithium toxicity improved after withdrawal of lithium. This case highlights the need to treat normal serum lithium levels with caution in patients showing signs of clinical lithium toxicity...
June 2, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28574009/potential-biomarkers-for-bipolar-disorder-where-do-we-stand
#7
REVIEW
Rajesh Sagar, Raman Deep Pattanayak
Bipolar disorder (BD) is a severe, recurrent mood disorder, associated with a significant morbidity and mortality, with high rates of suicides and medical comorbidities. There is a high risk of mood disorders among the first-degree relatives of patients with BD. In the current clinical practice, the diagnosis of BD is made by history taking, interview and behavioural observations, thereby lacking an objective, biological validation. This approach may result in underdiagnosis, misdiagnosis and eventually poorer outcomes...
January 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28558363/lifetime-anxiety-disorder-and-current-anxiety-symptoms-associated-with-hastened-depressive-recurrence-in-bipolar-disorder
#8
Saloni Shah, Jane P Kim, Dong Yeon Park, Hyun Kim, Laura D Yuen, Dennis Do, Bernardo Dell'Osso, Farnaz Hooshmand, Shefali Miller, Po W Wang, Terence A Ketter
AIMS: To assess differential relationships between lifetime anxiety disorder/current anxiety symptoms and longitudinal depressive severity in bipolar disorder (BD). METHODS: Stanford BD Clinic outpatients enrolled during 2000-2011 were assessed with the Systematic Treatment Enhancement Program for BD (STEP-BD) Affective Disorders Evaluation and followed with the STEP-BD Clinical Monitoring Form while receiving naturalistic treatment for up to two years. Baseline unfavorable illness characteristics/current mood symptoms and times to depressive recurrence/recovery were compared in patients with versus without lifetime anxiety disorder/current anxiety symptoms...
May 8, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28554324/multi-target-directed-ligands-affecting-serotonergic-neurotransmission-for-alzheimer-s-disease-therapy-advances-in-chemical-and-biological-research
#9
Agnieszka Jankowska, Anna Wesołowska, Maciej Pawłowski, Grażyna Chłoń-Rzepa
Alzheimer's disease (AD) is an age-related neurodegenerative disorder characterized by a progressive cognitive impairments and chronic inflammation that affects over 30 million people all over the world. Most of Alzheimer's patients also suffer from psychosis, aggression, agitation, depression, anxiety, and many other behavioral and psychological symptoms of dementia. Unfortunately, currently available anti-AD drugs provide modest symptomatic relief, and do not reverse the neurodegeneration. Consequently, the average life expectancy after diagnosis is between six to ten years...
May 29, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28544944/mood-and-anxiety-disorders-in-australia-and-new-zealand-s-indigenous-populations-a-systematic-review-and-meta-analysis
#10
REVIEW
Emma Black, Steve Kisely, Karolina Alichniewicz, Maree Toombs
The Indigenous populations of Australia and New Zealand are considered at higher risk of mood and anxiety disorders but many studies do not include direct comparisons with similar non-Indigenous controls. We conducted a systematic search of relevant electronic databases, as well as snowballing and targeted searches of the grey literature. Studies were included for meta-analysis if they compared rates of mood and anxiety disorders between Indigenous and non-Indigenous Australians or Maori. Seven Australian and 10 NZ studies were included...
May 10, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28520834/effect-of-electrode-montage-and-head-position-on-air-conducted-ocular-vestibular-evoked-myogenic-potential
#11
Kathryn Makowiec, Devin L McCaslin, Gary P Jacobson, Kelsey Hatton, John Lee
Purpose: The purpose of this investigation was to identify the optimal recording parameters for evoking the ocular vestibular evoked myogenic potential (oVEMP) using air-conduction stimuli. Method: Subjects were 17 otologically and neurologically intact adults (age: M = 24.18 years, SD = 1.91 years). The oVEMP responses were elicited using a 500-Hz tone burst air-conduction stimulus presented at an intensity of 95 dB nHL. The setting was a balance function laboratory that was part of a large tertiary care otology clinic...
June 13, 2017: American Journal of Audiology
https://www.readbyqxmd.com/read/28506666/prevalence-and-factors-associated-with-body-mass-index-in-children-aged-9-11-years
#12
Gerson Luis de Moraes Ferrari, Victor Matsudo, Peter T Katzmarzyk, Mauro Fisberg
OBJECTIVE: This study aimed to identify the prevalence and factors associated with body mass index (BMI) in children aged 9-11 years. METHODS: The study is part of the International Study of Childhood Obesity Lifestyle and the Environment (ISCOLE). Body composition was determined using the bipolar bioimpedance technique. The mean BMI value was categorized as recommended by the World Health Organization. For seven consecutive days, participants used an accelerometer to objectively monitor sedentary behavior (SB) and moderate to vigorous physical activity...
May 12, 2017: Jornal de Pediatria
https://www.readbyqxmd.com/read/28503892/the-ethics-of-clinical-trials-research-in-severe-mood-disorders
#13
Allison C Nugent, Franklin G Miller, Ioline D Henter, Carlos A Zarate
Mood disorders, including major depressive disorder (MDD) and bipolar disorder (BD), are highly prevalent, frequently disabling, and sometimes deadly. Additional research and more effective medications are desperately needed, but clinical trials research in mood disorders is fraught with ethical issues. Although many authors have discussed these issues, most do so from a theoretical viewpoint. This manuscript uses available empirical data to inform a discussion of the primary ethical issues raised in mood disorders research...
July 2017: Bioethics
https://www.readbyqxmd.com/read/28503112/athanasios-koukopoulos-psychiatry-the-primacy-of-mania-and-the-limits-of-antidepressants
#14
REVIEW
S Nassir Ghaemi, Paul A Vohringer
BACKGROUND: Athanasios Koukopoulos provided a radical model for understanding depressive and manic conditions. OBJECTIVE: To review, explain, and analyze Koukopoulos' concept of the primacy of mania, with special attention to the role of antidepressants. METHOD: A conceptual review of Koukopoulos' writings and lectures on this topic is given. RESULTS: Koukopoulos held that depressive states are caused by manic states; the former do not occur without the latter...
April 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28500982/abnormal-sleep-duration-associated-with-hastened-depressive-recurrence-in-bipolar-disorder
#15
Anda Gershon, Dennis Do, Satyanand Satyanarayana, Saloni Shah, Laura D Yuen, Farnaz Hooshmand, Shefali Miller, Po W Wang, Terence A Ketter
BACKGROUND: Abnormal sleep duration (ASD, <6 or ≥9h) is common in bipolar disorder (BD), and often persists beyond acute mood episodes. Few longitudinal studies have examined the ASD's impact upon BD illness course. The current study examined the longitudinal impact of ASD upon bipolar depressive recurrence/recovery. METHODS: Outpatients referred to the Stanford BD Clinic during 2000-2011 were assessed with the Systematic Treatment Enhancement Program for BD (STEP-BD) Affective Disorders Evaluation at baseline, and with the Clinical Monitoring Form at monthly follow-ups for up to two years of naturalistic treatment...
May 8, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28497721/scale-effects-in-moral-relevance-assessment
#16
Jonas Nagel, Andrej Rybak
Research on moral judgment often employs bipolar rating scales to assess whether the difference between two contrasted options is judged to be morally relevant. We give an account of how different numbers of response options provided on such scales (odd vs. even) change the meaning of the test question by communicating different implicit presuppositions. We demonstrate experimentally that these changes can qualitatively affect the moral relevance judgments that subjects express in response to a given judgment problem...
March 2017: Experimental Psychology
https://www.readbyqxmd.com/read/28487076/evidence-for-differential-opioid-use-disorder-in-schizophrenia-in-an-addiction-treatment-population
#17
Joshua Chiappelli, Shuo Chen, Ann Hackman, L Elliot Hong
Although people diagnosed with schizophrenia are known to have elevated risks of abuse and dependence for nicotine, alcohol, cocaine, and cannabis, it is less clear if schizophrenia is associated with higher rates of opioid use disorders compared to either the general population or individuals with other major psychiatric disorders. Here we examine a large publicly available database from substance abuse treatment centers to compare how frequently patients with schizophrenia report problems with heroin or other opioid drugs compared to other major drugs of abuse...
May 6, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28474173/-genetics-of-bipolar-disorder
#18
REVIEW
M Budde, A J Forstner, K Adorjan, S K Schaupp, M M Nöthen, T G Schulze
Bipolar disorder (BD) has a multifactorial etiology. Its development is influenced by genetic as well as environmental factors. Large genome-wide association studies (GWAS), in which genetic risk allelic variants for the disorder could be replicated for the first time, marked the breakthrough in the identification of the responsible risk genes. In addition to these common genetic variants with moderate effects identified by GWAS, rare variants with a higher penetrance are expected to play a role in disease development...
May 4, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28439101/largest-gwas-of-ptsd-n-20%C3%A2-070-yields-genetic-overlap-with-schizophrenia-and-sex-differences-in-heritability
#19
L E Duncan, A Ratanatharathorn, A E Aiello, L M Almli, A B Amstadter, A E Ashley-Koch, D G Baker, J C Beckham, L J Bierut, J Bisson, B Bradley, C-Y Chen, S Dalvie, L A Farrer, S Galea, M E Garrett, J E Gelernter, G Guffanti, M A Hauser, E O Johnson, R C Kessler, N A Kimbrel, A King, N Koen, H R Kranzler, M W Logue, A X Maihofer, A R Martin, M W Miller, R A Morey, N R Nugent, J P Rice, S Ripke, A L Roberts, N L Saccone, J W Smoller, D J Stein, M B Stein, J A Sumner, M Uddin, R J Ursano, D E Wildman, R Yehuda, H Zhao, M J Daly, I Liberzon, K J Ressler, C M Nievergelt, K C Koenen
The Psychiatric Genomics Consortium-Posttraumatic Stress Disorder group (PGC-PTSD) combined genome-wide case-control molecular genetic data across 11 multiethnic studies to quantify PTSD heritability, to examine potential shared genetic risk with schizophrenia, bipolar disorder, and major depressive disorder and to identify risk loci for PTSD. Examining 20 730 individuals, we report a molecular genetics-based heritability estimate (h(2)SNP) for European-American females of 29% that is similar to h(2)SNP for schizophrenia and is substantially higher than h(2)SNP in European-American males (estimate not distinguishable from zero)...
April 25, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28422579/is-the-higher-number-of-suicide-attempts-in-bipolar-disorder-vs-major-depressive-disorder-attributable-to-illness-severity
#20
Matthew S Michaels, Tia Balthrop, Alejandro Pulido, M David Rudd, Thomas E Joiner
The present study represents an early stage investigation into the phenomenon whereby those with bipolar disorder attempt suicide more frequently than those with unipolar depression, but do not tend to attempt suicide during mania. Data for this study were obtained from baseline measurements collected in a randomized treatment study at a major southwestern United States military medical center. We demonstrated the rarity of suicide attempts during mania, the higher frequency of suicide attempts in those with bipolar disorder compared to those with depression, and the persistence of effects after accounting for severity of illness...
April 19, 2017: Archives of Suicide Research: Official Journal of the International Academy for Suicide Research
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