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https://www.readbyqxmd.com/read/28440813/instability-of-default-mode-network-connectivity-in-major-depression-a-two-sample-confirmation-study
#1
T Wise, L Marwood, A M Perkins, A Herane-Vives, R Joules, D J Lythgoe, W-M Luh, S C R Williams, A H Young, A J Cleare, D Arnone
Major depression is associated with altered static functional connectivity in various brain networks, particularly the default mode network (DMN). Dynamic functional connectivity is a novel tool with little application in affective disorders to date, and holds the potential to unravel fluctuations in connectivity strength over time in major depression. We assessed stability of connectivity in major depression between the medial prefrontal cortex (mPFC) and posterior cingulate cortex (PCC), key nodes in the DMN that are implicated in ruminative cognitions...
April 25, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28440578/developing-social-marketed-individual-preconception-care-consultations-which-consumer-preferences-should-it-meet
#2
Sabine F van Voorst, Chantal A Ten Kate, Lieke C de Jong-Potjer, Eric A P Steegers, Semiha Denktaş
AIMS: Preconception care (PCC) is care that aims to improve the health of offspring by addressing risk factors in the pre-pregnancy period. Consultations are recognized as a method to promote perinatal health. However, prospective parents underutilize PCC services. Uptake can improve if delivery approaches satisfy consumer preferences. Aim of this study was to identify preferences of women (consumers) as a first step to social marketed individual PCC consultations. METHODS: In depth, semi-structured interviews were performed to identify women's views regarding the four components of the social marketing model: product (individual PCC consultation), place (setting), promotion (how women are made aware of the product) and price (costs)...
April 25, 2017: Health Expectations: An International Journal of Public Participation in Health Care and Health Policy
https://www.readbyqxmd.com/read/28439224/richness-in-functional-connectivity-depends-on-the-neuronal-integrity-within-the-posterior-cingulate-cortex
#3
Anton R Lord, Meng Li, Liliana R Demenescu, Johan van den Meer, Viola Borchardt, Anna Linda Krause, Hans-Jochen Heinze, Michael Breakspear, Martin Walter
The brain's connectivity skeleton-a rich club of strongly interconnected members-was initially shown to exist in human structural networks, but recent evidence suggests a functional counterpart. This rich club typically includes key regions (or hubs) from multiple canonical networks, reducing the cost of inter-network communication. The posterior cingulate cortex (PCC), a hub node embedded within the default mode network, is known to facilitate communication between brain networks and is a key member of the "rich club...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28437748/rational-and-timely-haemostatic-interventions-following-cardiac-surgery-coagulation-factor-concentrates-or-blood-bank-products
#4
Mariann Tang, Christian Fenger-Eriksen, Per Wierup, Jacob Greisen, Jørgen Ingerslev, Vibeke Hjortdal, Benny Sørensen
BACKGROUND: Cardiac surgery may cause a serious coagulopathy leading to increased risk of bleeding and transfusion demands. Blood bank products are commonly first line haemostatic intervention, but has been associated with hazardous side effect. Coagulation factor concentrates may be a more efficient, predictable, and potentially a safer treatment, although prospective clinical trials are needed to further explore these hypotheses. This study investigated the haemostatic potential of ex vivo supplementation of coagulation factor concentrates versus blood bank products on blood samples drawn from patients undergoing cardiac surgery...
April 5, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28435932/default-mode-network-subsystems-are-differentially-disrupted-in-posttraumatic-stress-disorder
#5
Danielle R Miller, Scott M Hayes, Jasmeet P Hayes, Jeffrey M Spielberg, Ginette Lafleche, Mieke Verfaellie
BACKGROUND: Posttraumatic stress disorder (PTSD) is a psychiatric disorder characterized by debilitating re-experiencing, avoidance, and hyperarousal symptoms following trauma exposure. Recent evidence suggests that individuals with PTSD show disrupted functional connectivity in the default mode network, an intrinsic network that consists of a midline core, a medial temporal lobe (MTL) subsystem, and a dorsomedial prefrontal cortex (dMPFC) subsystem. The present study examined whether functional connectivity in these subsystems is differentially disrupted in PTSD...
January 13, 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28432847/genotype-phenotype-correlation-in-paediatric-pheochromocytoma-and-paraganglioma-a-single-centre-experience-from-india
#6
Kranti Khadilkar, Vijaya Sarathi, Rajeev Kasaliwal, Reshma Pandit, Manjunath Goroshi, Vyankatesh Shivane, Anurag Lila, Tushar Bandgar, Nalini S Shah
BACKGROUND: Data on genotype-phenotype correlation in children is limited. Hence, we studied the prevalence of germline mutations and genotype-phenotype correlation in children with pheochromocytoma (PCC)/paraganglioma (PGL) and compared it with adult PCC/PGL cohort. METHODS: A total of 121 consecutive, unrelated, index PCC/PGL patients underwent genetic testing for five PCC/PGL susceptibility genes (RET, VHL, SDHB, SDHD and SDHC) and were evaluated for clinical diagnosis of neurofibromatosis type1 (NF1)...
April 22, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28429526/sll1783-a-monooxygenase-associated-with-polysaccharide-processing-in-the-unicellular-cyanobacterium-synechocystis-pcc-6803
#7
Hélder Miranda, Peter Immerzeel, Lorenz Gerber, Katarina Hörnaeus, Sara Bergström Lind, Bagmi Pattanaik, Pia Lindberg, Fikret Mamedov, Peter Lindblad
Cyanobacteria play a pivotal role as the primary producer in many aquatic ecosystems. The knowledge on the interacting processes of cyanobacteria with its environment - abiotic and biotic factors - is still very limited. Many potential exocytoplasmic proteins in the model unicellular cyanobacterium Synechocystis PCC 6803 have unknown functions and their study is essential to improve our understanding of this photosynthetic organism and its potential for biotechnology use. Here we characterize a deletion mutant of Synechocystis PCC 6803, ∆sll1783, a strain that showed a remarkably high light resistance which is related with its lower thylakoid membrane formation...
April 21, 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/28429067/neuronal-oscillations-and-synchronicity-associated-with-gamma-hydroxybutyrate-during-resting-state-in-healthy-male-volunteers
#8
Robin von Rotz, Michael Kometer, Dario Dornbierer, Jürg Gertsch, M Salomé Gachet, Franz X Vollenweider, Erich Seifritz, Oliver G Bosch, Boris B Quednow
RATIONALE: Gamma-hydroxybutyrate (GHB) is a putative neurotransmitter, a drug of abuse, an anesthetic agent, and a treatment for neuropsychiatric disorders. In previous electroencephalography (EEG) studies, GHB was shown to induce an electrophysiological pattern of "paradoxical EEG-behavioral dissociation" characterized by increased delta and theta oscillations usually associated with sleep during awake states. However, no detailed source localization of these alterations and no connectivity analyses have been performed yet...
April 20, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28423314/cyanobacteria-maintain-constant-protein-concentration-despite-genome-copy-number-variation
#9
Xiao-Yu Zheng, Erin K O'Shea
The cyanobacterium Synechococcus elongatus PCC 7942 has multiple copies of its single chromosome, and the copy number varies in individual cells, providing an ideal system to study the effect of genome copy-number variation on cell size and gene expression. Using single-cell fluorescence imaging, we found that protein concentration remained constant across individual cells regardless of genome copy number. Cell volume and the total protein amount from a single gene were both positively, linearly correlated with genome copy number, suggesting that changes in cell volume play an important role in buffering genome copy-number variance...
April 18, 2017: Cell Reports
https://www.readbyqxmd.com/read/28419641/neural-correlates-of-experimental-trauma-memory-retrieval
#10
Geraldine A Gvozdanovic, Philipp Stämpfli, Erich Seifritz, Björn Rasch
OBJECTIVES: Traumatic memories such as intrusions and flashbacks play a major role in the development and maintenance of post-traumatic stress disorder (PTSD). A thorough understanding of the neural mechanisms underlying traumatic memories is indispensable for precise diagnosis, for personalized treatment and prevention. In particular, the identification of early neural predictor variables for intrusion development shortly after trauma exposure requires detailed investigation. EXPERIMENTAL DESIGN: Here, we examined the neural correlates of early experimental trauma memory retrieval in a traumatic film paradigm in 42 young healthy females, using both implicit and explicit retrieval tasks...
April 17, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28414676/pheochromocytoma-of-the-organ-zuckerkandl
#11
C Lee, E Chang, J Gimenez, R McCarron
INTRODUCTION: Pheochromocytomas (PCCs);, or intra-adrenal paragangliomas (PGLs);, are neuroendocrine tumors arising within the adrenal medulla. Extra-adrenal paragangliomas may arise in the sympathetic or parasympathetic paraganglia and more rarely in other organs. One of the most common extra-adrenal sites is in the organ of Zuckerkandl, a collection of chromaffin cells near the origin of the inferior mesenteric artery or near the aortic bifurcation. The following is a case of a patient with resistant hypertension secondary to an extra-adrenal paraganglioma in the organ of Zuckerkandl...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28414013/the-efficacy-of-primary-care-chaplaincy-compared-with-antidepressants-a-retrospective-study-comparing-chaplaincy-with-antidepressants
#12
Gordon Macdonald
Aim To determine the effectiveness of primary care chaplaincy (PCC) when used as the sole intervention, with outcomes being compared directly with those of antidepressants. This was to be carried out in a homogenous study population reflective of certain demographics in the United Kingdom. BACKGROUND: Increasing numbers of patients are living with long-term conditions and 'modern maladies' and are experiencing loss of well-being and depression. There is an increasing move to utilise non-pharmacological interventions such as 'talking therapies' within this context...
April 17, 2017: Primary Health Care Research & Development
https://www.readbyqxmd.com/read/28413443/molecular-and-biochemical-characterization-of-recombinant-cel12b-cel8c-and-peh28-overexpressed-in-escherichia-coli-and-their-potential-in-biofuel-production
#13
Eman Ibrahim, Kim D Jones, Keith E Taylor, Ebtesam N Hosseney, Patrick L Mills, Jean M Escudero
BACKGROUND: The high crystallinity of cellulosic biomass myofibrils as well as the complexity of their intermolecular structure is a significant impediment for biofuel production. Cloning of celB-, celC-encoded cellulases (cel12B and cel8C) and peh-encoded polygalacturonase (peh28) from Pectobacterium carotovorum subsp. carotovorum (Pcc) was carried out in our previous study using Escherichia coli as a host vector. The current study partially characterizes the enzymes' molecular structures as well as their catalytic performance on different substrates which can be used to improve their potential for lignocellulosic biomass conversion...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28413102/-antibiotic-susceptibility-of-staphylococcus-aureus-and-streptococcus-pneumoniae-in-healthy-carrier-individuals-in-primary-care-in-barcelona-area
#14
Carles Llor, Albert Boada, Mariona Pons-Vigués, Elisabet Grenzner, Rosa Juvé, Jesús Almeda
INTRODUCTION: The information available on antibiotic resistance patterns are generally based on specimens from hospitalised individuals. This study was aimed at evaluating the antibiotic resistance rate of nasal carriage strains of Staphylococcus aureus and Streptococcus pneumoniae in healthy individuals, in accordance with age and gender, attended in Primary Care Centres (PCC). DESIGN: Cross-sectional study. SETTING: Seven PCC in the Barcelona area...
April 13, 2017: Atencion Primaria
https://www.readbyqxmd.com/read/28411159/in-vivo-visualization-of-connections-among-revised-papez-circuit-hubs-using-full-q-space-diffusion-spectrum-imaging-tractography
#15
Peng-Hu Wei, Zhi-Qi Mao, Fei Cong, Fang-Cheng Yeh, Bo Wang, Zhi-Pei Ling, Shu-Li Liang, Lin Chen, Xin-Guang Yu
Structural connections among the hubs of the revised Papez circuit remain to be elucidated in the human brain. As the original Papez circuit failed to explain functional imaging findings, a more detailed investigation is needed to delineate connections among the circuit's key hubs. Here we acquired diffusion spectrum imaging (DSI) from eight normal subjects and used data from the Human Connectome Project (HCP) to elucidate connections among hubs in the retrosplenial gyrus, hippocampus, mammillary bodies, and anterior thalamic nuclei...
April 12, 2017: Neuroscience
https://www.readbyqxmd.com/read/28407086/toward-solar-biodiesel-production-from-co2-using-engineered-cyanobacteria
#16
Han Min Woo, Hyun Jeong Lee
Metabolic engineering of cyanobacteria has received attention as a sustainable strategy to convert carbon dioxide to various biochemicals including fatty acid-derived biodiesel. Recently, Synechococcus elongatus PCC 7942, a model cyanobacterium, has been engineered to convert CO2 to fatty acid ethyl esters (FAEEs) as biodiesel. Modular pathway has been constructed for FAEE production. Several metabolic engineering strategies were discussed to improve the production levels of FAEEs, including host engineering by improving CO2 fixation rate and photosynthetic efficiency...
April 12, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28406289/phylogenomic-analysis-of-the-microviridin-biosynthetic-pathway-coupled-with-targeted-chemoenzymatic-synthesis-yields-potent-protease-inhibitors
#17
Muhammad N Ahmed, Emmanuel Reyna González, Bianca Schmid, Vincent Wiebach, Roderich Suessmuth, Elke Dittmann, David P Fewer
Natural products and their semi-synthetic derivatives are an important source of drugs for the pharmaceutical industry. Bacteria are prolific producers of natural products and encode a vast diversity of natural product biosynthetic gene clusters. However, much of this diversity is inaccessible to natural product discovery. Here we use a combination of phylogenomic analysis of the microviridin biosynthetic pathway and chemo-enzymatic synthesis of bioinformatically predicted microviridins to yield new protease inhibitors...
April 13, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28404803/neuropsychiatric-symptoms-predict-hypometabolism-in-preclinical-alzheimer-disease
#18
Kok Pin Ng, Tharick A Pascoal, Sulantha Mathotaarachchi, Chang-Oh Chung, Andréa L Benedet, Monica Shin, Min Su Kang, Xiaofeng Li, Maowen Ba, Nagaendran Kandiah, Pedro Rosa-Neto, Serge Gauthier
OBJECTIVE: To identify regional brain metabolic dysfunctions associated with neuropsychiatric symptoms (NPS) in preclinical Alzheimer disease (AD). METHODS: We stratified 115 cognitively normal individuals into preclinical AD (both amyloid and tau pathologies present), asymptomatic at risk for AD (either amyloid or tau pathology present), or healthy controls (no amyloid or tau pathology present) using [(18)F]florbetapir PET and CSF phosphorylated tau biomarkers...
April 12, 2017: Neurology
https://www.readbyqxmd.com/read/28402138/exploring-differences-in-patient-centered-practices-among-healthcare-professionals-in-acute-care-settings
#19
Souraya Sidani, Scott Reeves, Christina Hurlock-Chorostecki, Mary van Soeren, Mary Fox, Laura Collins
There is limited evidence of the extent to which Healthcare professionals implement patient-centered care (PCC) and of the factors influencing their PCC practices in acute care organizations. This study aimed to (1) examine the practices reported by health professionals (physicians, nurses, social workers, other healthcare providers) in relation to three PCC components (holistic, collaborative, and responsive care), and (2) explore the association of professionals' characteristics (gender, work experience) and a contextual factor (caseload), with the professionals' PCC practices...
April 12, 2017: Health Communication
https://www.readbyqxmd.com/read/28402123/iron-isotope-fractionation-during-fe-ii-oxidation-mediated-by-the-oxygen-producing-marine-cyanobacterium-synechococcus-pcc-7002
#20
E D Swanner, T Bayer, W Wu, L Hao, M Obst, A Sundman, J M Byrne, F M Michel, I C Kleinhanns, A Kappler, R Schoenberg
In this study, we couple iron isotope analysis to microscopic and mineralogical investigation of iron speciation during circumneutral Fe(II) oxidation and Fe(III) precipitation with photosynthetically produced oxygen. In the presence of the cyanobacterium Synechococcus PCC 7002, aqueous Fe(II) (Fe(II)aq) is oxidized and precipitated as amorphous Fe(III) oxyhydroxide minerals (iron precipitates, Feppt), with distinct isotopic fractionation (ε(56)Fe) values determined from fitting the δ(56)Fe(II)aq (1.79‰ and 2...
April 21, 2017: Environmental Science & Technology
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