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https://www.readbyqxmd.com/read/28089652/hippocampal-prefrontal-connectivity-as-a-translational-phenotype-for-schizophrenia
#1
REVIEW
Florian Bähner, Andreas Meyer-Lindenberg
Finding novel biological targets in psychiatry has been difficult, partly because current diagnostic categories are not defined by pathophysiology and difficult to model in animals. The study of species-conserved systems-level mechanisms implicated in psychiatric disease could be a promising strategy to address some of these difficulties. Altered hippocampal-prefrontal (HC-PFC) connectivity during working memory (WM) processing is a candidate for such a translational phenotype as it has been repeatedly associated with impaired cognition in schizophrenia patients and animal models for psychiatric risk factors...
January 12, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28089108/-knowledge-and-attitudes-of-primary-care-nurses-about-the-management-of-patients-with-insomnia
#2
María Clara Vidal-Thomàs, Beatriz Yañez-Amoros, Isabel Torrens, Elena Torres-Solera, Magdalena Esteva
OBJECTIVE: To describe the knowledge, attitudes, and performance of primary care nurses in the management of patients with insomnia. METHODS: Descriptive study. An online questionnaire was sent to all primary care nurses of the Majorca Primary Care Department between June-July 2014. MEASUREMENTS: sociodemographic variables, professional characteristics, tuition, usual clinical practice in the management of patients with insomnia. RESULTS: 138 nurses answered the questionnaire (47%)...
January 6, 2017: Enfermería Clínica
https://www.readbyqxmd.com/read/28088728/the-association-between-insomnia-related-sleep-disruptions-and-cognitive-dysfunction-during-the-inter-episode-phase-of-bipolar-disorder
#3
Jennifer C Kanady, Adriane M Soehner, Alexandra B Klein, Allison G Harvey
Sleep disturbance and cognitive dysfunction are two domains of impairment during inter-episode bipolar disorder. Despite evidence demonstrating the importance of sleep for cognition in healthy and sleep-disordered samples, this link has been minimally examined in bipolar disorder. The present study tested the association between insomnia-related sleep disruptions and cognitive dysfunction during inter-episode bipolar disorder. Forty-seven participants with bipolar disorder and a comorbid insomnia diagnosis (BD-Insomnia) and 19 participants with bipolar disorder without sleep disturbance in the last six months (BD-Control) participated in the study...
January 5, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28081034/the-effects-of-the-removal-of-electronic-devices-for-48-hours-on-sleep-in-elite-judo-athletes
#4
Ian C Dunican, David T Martin, Shona L Halson, Reid Reale, Brian Dawson, John Caldwell, Maddison J Jones, Peter R Eastwood
OBJECTIVE: This study examined the effects of the removal of electronic devices (i.e., smartphones, etc.) for 48 hours on sleep quality and next-day athletic and cognitive performance in elite Judo athletes. PARTICIPANTS: Over 6 days and nights, 23 eliteAustralian Judo athletes were monitored while attending a camp at the Australian Institute of Sport (AIS). In 14 athletes all electronic devices were removed on days 3 & 4 (i.e. for 48 hours: the 'device-restricted group') while 9 were permitted to use their devices throughout the camp (the 'control group')...
January 4, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28068616/residual-depressive-symptoms-sleep-disturbance-and-perceived-cognitive-impairment-as-determinants-of-functioning-in-patients-with-bipolar-disorder
#5
Ludovic Samalin, Laurent Boyer, Andrea Murru, Isabella Pacchiarotti, María Reinares, Caterina Mar Bonnin, Carla Torrent, Norma Verdolini, Corinna Pancheri, Ingrid de Chazeron, Mohamed Boucekine, Pierre-Alexis Geoffroy, Frank Bellivier, Pierre-Michel Llorca, Eduard Vieta
BACKGROUND: Many patients with bipolar disorder (BD) experience residual symptoms during their inter-episodic periods. The study aimed to analyse the relationship between residual depressive symptoms, sleep disturbances and self-reported cognitive impairment as determinants of psychosocial functioning in a large sample of euthymic BD patients. METHODS: This was a cross-sectional study of 468 euthymic BD outpatients. We evaluated the residual depressive symptoms with the Bipolar Depression Rating Scale, the sleep disturbances with the Pittsburgh Sleep Quality Index, the perceived cognitive performance using visual analogic scales and functioning with the Functioning Assessment Short Test...
January 3, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28065685/excessive-daytime-sleepiness-and-fatigue-may-indicate-accelerated-brain-aging-in-cognitively-normal-late-middle-aged-and-older-adults
#6
Diego Z Carvalho, Erik K St Louis, Bradley F Boeve, Michelle M Mielke, Scott A Przybelski, David S Knopman, Mary M Machulda, Rosebud O Roberts, Yonas E Geda, Ronald C Petersen, Clifford R Jack, Prashanthi Vemuri
Excessive daytime sleepiness (EDS) and fatigue increases with age. The aim of this study was to investigate the association between EDS and fatigue with cortical thickness and hippocampal volume in cognitively normal, late middle-aged and older adults. We performed a cross-sectional observational study of 1374 cognitively-normal subjects aged 50 years and older who had a structural MRI. Regional cortical thickness and hippocampal volume were measured. Multiple linear regression models were fit to explore associations between EDS and fatigue and structural MRI measures in different brain regions, adjusting for multiple covariates...
November 3, 2016: Sleep Medicine
https://www.readbyqxmd.com/read/28060546/gray-matter-hypertrophy-and-thickening-with-obstructive-sleep-apnea-in-middle-aged-and-older-adults
#7
Andrée-Ann Baril, Katia Gagnon, Pauline Brayet, Jacques Montplaisir, Louis De Beaumont, Julie Carrier, Chantal Lafond, Francis L'Heureux, Jean-François Gagnon, Nadia Gosselin
RATIONALE: Obstructive sleep apnea causes intermittent hypoxemia, hemodynamic fluctuations, and sleep fragmentation, all of which could damage cerebral gray matter that can be indirectly assessed with neuroimaging. OBJECTIVES: To investigate whether markers of obstructive sleep apnea severity are associated with gray matter changes among middle-aged and older individuals. METHODS: Seventy-one subjects (ages: 55 to 76; apnea-hypopnea index: 0...
January 6, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28057529/genetic-inhibition-of-anaplastic-lymphoma-kinase-rescues-cognitive-impairments-in-neurofibromatosis-1-mutant-mice
#8
Joseph B Weiss, Sydney J Weber, Eileen Ruth S Torres, Tessa Marzulla, Jacob Raber
Heterozygous Neurofibromatosis 1 (NF1) loss of function mutations occur in approximately 90% of patients with neurofibromatosis. A major, disabling phenotypic consequence of reduced NF1 function is cognitive impairment; a possibly related behavioral phenotype is impaired sleep. Recent results in Drosophila have demonstrated a genetic interaction between Anaplastic Lymphoma Kinase (Alk) and NF1 for both associative learning and sleep. Inhibition of Alk improves associative learning and sleep in heterozygous NF1 mutant flies...
January 3, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28057021/treatment-of-intermittent-hypoxia-increases-phosphorylated-tau-in-the-hippocampus-via-biological-processes-common-to-aging
#9
Sosuke Yagishita, Seiya Suzuki, Keisuke Yoshikawa, Keiko Iida, Ayako Hirata, Masahiko Suzuki, Akihiko Takashima, Kei Maruyama, Akira Hirasawa, Takeo Awaji
Sleep-disordered breathing produces cognitive impairments, and is possibly associated with Alzheimer disease (AD). Intermittent hypoxia treatment (IHT), an experimental model for sleep-disordered breathing, results in cognitive impairments in animals via unknown mechanisms. Here, we exposed mice to IHT protocols, and performed biochemical analyses and microarray analyses regarding their hippocampal samples. In particular, we performed gene ontology (GO)-based microarray analysis to elucidate effects of IHT on hippocampal functioning, which were compared with the effects of various previously-reported experimental conditions on that (ref...
January 5, 2017: Molecular Brain
https://www.readbyqxmd.com/read/28054436/low-dose-of-caffeine-enhances-the-efficacy-of-antidepressants-in-major-depressive-disorder-and-the-underlying-neural-substrates
#10
Qing-Shan Liu, Ran Deng, Yuyan Fan, Keqin Li, Fanggang Meng, Xueli Li, Rui Liu
SCOPE: Caffeine is one of the most frequently used psychoactive substances ingested mainly via beverage or food products. Major depressive disorder is a serious and devastating psychiatric disorder. Emerging evidence indicates that caffeine enhances the antidepressant-like activity of common antidepressant drugs in rodents. However, whether joint administration of low dose of caffeine enhances the antidepressant actions in depressed patients remains unclear. METHODS AND RESULTS: A total of 95 male inpatients were assigned to three groups and were asked to take either caffeine (60, 120mg) or placebo (soymilk powder) daily for 4 weeks on the basis of their current antidepressant medications...
January 5, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28046043/effects-of-sleep-deprivation-on-phase-synchronization-as-assessed-by-wavelet-phase-coherence-analysis-of-prefrontal-tissue-oxyhemoglobin-signals
#11
Lingguo Bu, Ming Zhang, Jianfeng Li, Fangyi Li, Heshan Liu, Zengyong Li
PURPOSE: To reveal the physiological mechanism of the decline in cognitive function after sleep deprivation, a within-subject study was performed to assess sleep deprivation effects on phase synchronization, as revealed by wavelet phase coherence (WPCO) analysis of prefrontal tissue oxyhemoglobin signals. MATERIALS AND METHODS: Twenty subjects (10 male and 10 female, 25.5 ± 3.5 years old) were recruited to participate in two tests: one without sleep deprivation (group A) and the other with 24 h of sleep deprivation (group B)...
2017: PloS One
https://www.readbyqxmd.com/read/28045986/evidence-for-cognitive-aging-in-midlife-women-study-of-women-s-health-across-the-nation
#12
Arun S Karlamangla, Margie E Lachman, WeiJuan Han, MeiHua Huang, Gail A Greendale
Although cross-sectional studies suggest that cognitive aging starts in midlife, few longitudinal studies have documented within-individual declines in cognitive performance before the seventh decade. Learning from repeat testing, or practice effects, can mask the decline in younger cohorts. In women, the menopause transition also affects test performance and can confound estimates of underlying decline. We designed this study to determine if, after controlling for practice effects, the menopause transition, and the symptoms associated with it, there is evidence of cognitive aging in midlife women...
2017: PloS One
https://www.readbyqxmd.com/read/28040430/association-of-obstructive-sleep-apnea-with-episodic-memory-and-cerebral-microvascular-pathology-a-preliminary-study
#13
Nancy A Kerner, Steven P Roose, Gregory H Pelton, Adam Ciarleglio, Jennifer Scodes, Cody Lentz, Joel R Sneed, D P Devanand
OBJECTIVES: To evaluate the impact of obstructive sleep apnea (OSA) on neurocognitive function and brain morphology in older adults with depression and cognitive impairment. METHODS: We prospectively screened OSA with the STOP-Bang questionnaire in the last 25 patients enrolled into the Donepezil Treatment of Cognitive Impairment and Depression (DOTCODE) trial. High and low probability of OSA were defined as a STOP-Bang score of ≥5 (h-OSA) and of <5 (l-OSA), respectively...
November 17, 2016: American Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28034600/sleep-changes-without-medial-temporal-lobe-or-brain-cortical-changes-in-community-dwelling-individuals-with-subjective-cognitive-decline
#14
Mariella Lauriola, Roberto Esposito, Stefano Delli Pizzi, Massimiliano de Zambotti, Francesco Londrillo, Joel H Kramer, Gil D Rabinovici, Armando Tartaro
INTRODUCTION: Subjective cognitive decline (SCD) is a risk factor for mild cognitive impairment (MCI) and Alzheimer disease (AD). Although sleep has been shown to be altered in MCI and AD, little is known about sleep in SCD. METHODS: Seventy cognitively normal community-dwelling participants were classified as SCD (32) or controls (38) using the Subjective Cognitive Decline Questionnaire. Sleep was assessed using actigraphy and diaries. FreeSurfer was used for performing medial temporal lobes (MTLs) and brain cortical parcellation of 3T magnetic resonance images...
December 26, 2016: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/28032388/impaired-visual-processing-in-patients-with-insomnia-disorder-revealed-by-a-dissociation-in-visual-search
#15
Enrico Giora, Andrea Galbiati, Sara Marelli, Marco Zucconi, Luigi Ferini-Strambi
Insomnia disorder is associated with both subjective and objective daytime impairments. In particular, cognitive impairments are frequently reported. However, little is known about the effects of this pathology on perceptual processes. In this study we aim at evaluating the effect of insomnia disorder on visual processing by employing a visual search paradigm. Twenty-three patients with insomnia disorder and 20 healthy age- and sex-matched control subjects participated in the study. After a polysomnographic recording night patients performed a visual search task in which they had to respond to the presence/absence of a target (letter T) embedded into a set of distractors (letters Os, Xs or Ls)...
December 29, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/28032218/symptom-clusters-during-palliative-chemotherapy-and-their-influence-on-functioning-and-quality-of-life
#16
Sun Young Rha, Jiyeon Lee
INTRODUCTION: Symptom management in patients undergoing palliative chemotherapy is challenging, as patients may suffer from cancer symptoms as well as symptoms related to chemotherapy. Symptom clusters are interrelated symptoms occurring simultaneously that exert a negative impact on survival. Identification of symptom clusters and effective symptom management for patients receiving palliative chemotherapy is crucial. OBJECTIVES: The purpose of this study was to identify symptom clusters among cancer patients undergoing palliative chemotherapy and examine the relationship between symptom clusters and functioning and quality of life (QOL) in these patients...
December 28, 2016: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28017549/gender-effect-on-non-motor-symptoms-in-parkinson-s-disease-are-men-more-at-risk
#17
A Nicoletti, R Vasta, G Mostile, G Nicoletti, G Arabia, G Iliceto, P Lamberti, R Marconi, L Morgante, P Barone, A Quattrone, M Zappia
INTRODUCTION: Several gender differences have been reported in Parkinson's Disease (PD). We evaluated the burden of non-motor symptoms (NMS) in PD and the possible gender differences in their occurrence. METHODS: The FRAGAMP study is a large multicenter case-control study. PD patients and controls underwent a face-to-face interview and a neurological examination performed by trained neurologists. Presence of NMS was investigated using a standardized questionnaire; cognitive impairment and depression were assessed using the Mini Mental State Examination and the Hamilton Depression Rating Scale respectively...
December 13, 2016: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28012806/shift-work-and-shift-work-sleep-disorder-clinical-and-organizational-perspectives
#18
REVIEW
Emerson M Wickwire, Jeanne Geiger-Brown, Steven M Scharf, Christopher L Drake
Throughout the industrialized world, nearly one in five employees works some form of non-traditional shift. Such shift work is associated with numerous negative health consequences, ranging from cognitive complaints to cancer, as well as diminished quality of life. Further, a substantial percentage of shift workers develop shift work disorder (SWD), a circadian rhythm sleep disorder characterized by excessive sleepiness, insomnia, or both as a result of shift work. In addition to adverse health consequences and diminished quality of life at the individual level, SWD incurs significant costs to employers through diminished workplace performance and increased accidents and errors...
December 21, 2016: Chest
https://www.readbyqxmd.com/read/28003503/parallel-recovery-of-consciousness-and-sleep-in-acute-traumatic-brain-injury
#19
Catherine Duclos, Marie Dumont, Caroline Arbour, Jean Paquet, Hélène Blais, David K Menon, Louis De Beaumont, Francis Bernard, Nadia Gosselin
OBJECTIVE: To investigate whether the progressive recuperation of consciousness was associated with the reconsolidation of sleep and wake states in hospitalized patients with acute traumatic brain injury (TBI). METHODS: This study comprised 30 hospitalized patients (age 29.1 ± 13.5 years) in the acute phase of moderate or severe TBI. Testing started 21.0 ± 13.7 days postinjury. Consciousness level and cognitive functioning were assessed daily with the Rancho Los Amigos scale of cognitive functioning (RLA)...
December 21, 2016: Neurology
https://www.readbyqxmd.com/read/28001756/transcranial-red-near-infrared-light-emitting-diode-therapy-to-improve-cognition-in-chronic-traumatic-brain-injury
#20
Margaret A Naeser, Paula I Martin, Michael D Ho, Maxine H Krengel, Yelena Bogdanova, Jeffrey A Knight, Megan K Yee, Ross Zafonte, Judith Frazier, Michael R Hamblin, Bang-Bon Koo
We review the general topic of traumatic brain injury (TBI) and our research utilizing transcranial photobiomodulation (tPBM) to improve cognition in chronic TBI using red/near-infrared (NIR) light-emitting diodes (LEDs) to deliver light to the head. tPBM improves mitochondrial function increasing oxygen consumption, production of adenosine triphosphate (ATP), and improving cellular energy stores. Nitric oxide is released from the cells increasing regional blood flow in the brain. Review of published studies: In our previously published study, 11 chronic TBI patients with closed-head TBI caused by different accidents (motor vehicle accident, sports-related, improvised explosive device blast injury) and exhibiting long-lasting cognitive dysfunction received 18 outpatient treatments (Monday, Wednesday, Friday for 6 weeks) starting at 10 months to 8 years post-TBI...
December 2016: Photomedicine and Laser Surgery
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