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https://www.readbyqxmd.com/read/28324983/the-precuneus-may-encode-irrationality-in-human-gambling
#1
P Sacre, M S D Kerr, S Subramanian, K Kahn, J Gonzalez-Martinez, M A Johnson, S V Sarma, J T Gale
Humans often make irrational decisions, especially psychiatric patients who have dysfunctional cognitive and emotional circuitry. Understanding the neural basis of decision-making is therefore essential towards patient management, yet current studies suffer from several limitations. Functional magnetic resonance imaging (fMRI) studies in humans have dominated decision-making neuroscience, but have poor temporal resolution and the blood oxygenation level-dependent signal is only a proxy for neural activity. On the other hand, lesion studies in humans used to infer functionality in decision-making lack characterization of neural activity altogether...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324949/muscle-synergy-analysis-in-transtibial-amputee-during-ramp-ascending-activity
#2
P Mehryar, M S Shourijeh, H F Maqbool, M Torabi, A A Dehghani-Sanij
In developed countries, the highest number of amputees are elderly with transtibial amputation. Walking on inclined surfaces is difficult for amputees due to loss of muscle volume and strength thereby transtibial amputees (TA) rely on the intact limb to maintain stability. The aim of this study was to use the concatenated non-negative matrix factorization (CNMF) technique to calculate muscle synergy components and compare the difference in muscle synergies and their associated activation profiles in the healthy and amputee groups during ramp ascending (RA) activity...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324851/assessing-the-impacts-of-best-management-practices-on-nitrate-pollution-in-an-agricultural-dominated-lowland-catchment-considering-environmental-protection-versus-economic-development
#3
Marcelo B Haas, Björn Guse, Nicola Fohrer
Water quality is strongly affected by nitrate inputs in agricultural catchments. Best Management Practices (BMPs) are alternative practices aiming to mitigate the impacts derived from agricultural activities and to improve water quality. Management activities are influenced by different governmental policies like the Water Framework Directive (WFD) and the Renewable Energy Sources Act (EEG). Their distinct goals can be contrasting and hamper an integrated sustainable development. Both need to be addressed in the actual conjuncture in rural areas...
March 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28324505/probing-the-telomere-damage-response
#4
Rekha Rai, Sandy Chang
Telomere dysfunctions, rendered through replicative attrition of telomeric DNA or due to the removal of shelterin components, are recognized as DNA double-stranded breaks (DSBs) by the DNA damage repair (DDR) pathway. This leads to the activation of DNA damage checkpoint sensors, including the Mre11-Rad50-Nbs1 (MRN) complex, γ-H2AX and 53BP1, the ATM and ATR signal-transducing kinases, and downstream effectors, including Chk1, Chk2, and p53. Robust DNA damage response signals at dysfunctional telomeres, achieved by the complete deletion of TRF2 or by expressing dominant-negative mutant TPP1ΔRD, can be detected by their association with γ-H2AX and 53BP1 forming "telomere dysfunction induced foci (TIFs)...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28324302/huntington-s-disease-update-on-treatments
#5
REVIEW
Kara J Wyant, Andrew J Ridder, Praveen Dayalu
Huntington's disease (HD) is an autosomal dominantly inherited neurodegenerative disease characterized by progressive motor, behavioral, and cognitive decline, ending in death. Despite the discovery of the underlying genetic mutation more than 20 years ago, treatment remains focused on symptomatic management. Chorea, the most recognizable symptom, responds to medication that reduces dopaminergic neurotransmission. Psychiatric symptoms such as depression and anxiety may also respond well to symptomatic therapies...
April 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28324299/fatal-familial-insomnia-clinical-aspects-and-molecular-alterations
#6
REVIEW
Franc Llorens, Juan-José Zarranz, Andre Fischer, Inga Zerr, Isidro Ferrer
PURPOSE OF REVIEW: Fatal familiar insomnia (FFI) is an autosomal dominant inherited prion disease caused by D178N mutation in the prion protein gene (PRNP D178N) accompanied by the presence of a methionine at the codon 129 polymorphic site on the mutated allele. FFI is characterized by severe sleep disorder, dysautonomia, motor signs and abnormal behaviour together with primary atrophy of selected thalamic nuclei and inferior olives, and expansion to other brain regions with disease progression...
April 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28324278/concentrations-and-origin-of-polychlorinated-biphenyls-pcbs-and-polycyclic-aromatic-hydrocarbons-pahs-in-sediments-of-western-spitsbergen-fjords-kongsfjorden-hornsund-and-adventfjorden
#7
Anna Pouch, Agata Zaborska, Ksenia Pazdro
Contaminant profiles in sediment cores represent valuable natural archives of environmental contamination, by which contaminant sources and historical changes in contaminant input and cycling may be recognized. In the present study, we discuss the sedimentary profiles and historical trends of organic contaminants - polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs) - in three fjords of the Svalbard archipelago differing in environmental conditions and anthropogenic impact. The obtained results revealed no significant differences between the fjords Hornsund and Kongsfjorden, in the average levels of the analyzed contaminants...
April 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28324259/protective-effect-of-nigella-sativa-seeds-against-spermatocyte-chromosomal-aberrations-and-genotoxicity-induced-by-carbon-tetrachloride-in-mice
#8
Ashraf M Abdel-Moneim, Amina E Essawy, Sherifa S Hamed, Ashgan A Abou-Gabal, Aglal A Alzergy
Nigella sativa is a well-known dietary antioxidant and a valuable inhibitor of clastogenesis and carcinogenesis. The purpose of the present work was to investigate the effects of N. sativa seeds against chromosomal aberrations in primary spermatocytes and early embryonic lethality induced by CCl4 hepatotoxin in Swiss albino mice. One hundred male Swiss albino mice were randomly divided into five groups. Groups I, II, and III received only normal saline, olive oil, and aqueous suspension of N. sativa seeds (50 mg/kg b...
March 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28324252/spatial-interpolation-methods-and-geostatistics-for-mapping%C3%A2-groundwater-contamination-in-a-coastal-area
#9
Vetrimurugan Elumalai, K Brindha, Bongani Sithole, Elango Lakshmanan
Mapping groundwater contaminants and identifying the sources are the initial steps in pollution control and mitigation. Due to the availability of different mapping methods and the large number of emerging pollutants, these methods need to be used together in decision making. The present study aims to map the contaminated areas in Richards Bay, South Africa and compare the results of ordinary kriging (OK) and inverse distance weighted (IDW) interpolation techniques. Statistical methods were also used for identifying contamination sources...
March 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28324007/aberrant-tgf-%C3%AE-signaling-drives-castration-resistant-prostate-cancer-in-a-male-mouse-model-of-prostate-tumorigenesis
#10
Hong Pu, Diane Begemann, Natasha Kyprianou
The androgen receptor (AR) plays a critical role as a driver of castration-resistant-prostate cancer (CRPC). Our previous studies demonstrated that disruption of transforming growth factor-β (TGF-β) signaling via introduction of dominant-negative TGF-β type II receptor (DNTGF-RβII) in the prostate epithelium of transgenic adenocarcinoma of the prostate (TRAMP) mice accelerated tumor. This study investigated the consequences of disrupted TGF-β signaling on prostate tumor growth under conditions of castration-induced androgen deprivation (ADT) in the pre-clinical model DNTGFβRII...
March 16, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323831/genetic-assessment-of-age-associated-alzheimer-disease-risk-development-and-validation-of-a-polygenic-hazard-score
#11
Rahul S Desikan, Chun Chieh Fan, Yunpeng Wang, Andrew J Schork, Howard J Cabral, L Adrienne Cupples, Wesley K Thompson, Lilah Besser, Walter A Kukull, Dominic Holland, Chi-Hua Chen, James B Brewer, David S Karow, Karolina Kauppi, Aree Witoelar, Celeste M Karch, Luke W Bonham, Jennifer S Yokoyama, Howard J Rosen, Bruce L Miller, William P Dillon, David M Wilson, Christopher P Hess, Margaret Pericak-Vance, Jonathan L Haines, Lindsay A Farrer, Richard Mayeux, John Hardy, Alison M Goate, Bradley T Hyman, Gerard D Schellenberg, Linda K McEvoy, Ole A Andreassen, Anders M Dale
BACKGROUND: Identifying individuals at risk for developing Alzheimer disease (AD) is of utmost importance. Although genetic studies have identified AD-associated SNPs in APOE and other genes, genetic information has not been integrated into an epidemiological framework for risk prediction. METHODS AND FINDINGS: Using genotype data from 17,008 AD cases and 37,154 controls from the International Genomics of Alzheimer's Project (IGAP Stage 1), we identified AD-associated SNPs (at p < 10-5)...
March 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28323777/msh6-past-and-present-and-muir-torre-syndrome-connecting-the-dots
#12
Meera Mahalingam
Sebaceous neoplasms such as adenoma, sebaceoma, and carcinoma, although sporadic in their occurrence, are clinically significant because of their association with Muir-Torre syndrome (MTS). MTS is a rare autosomal dominant genodermatosis characterized by the occurrence of sebaceous neoplasms and/or keratoacanthomas and visceral malignancies. MTS is usually the result of germline mutations in the DNA mismatch repair genes MSH2 and, albeit less commonly, MLH1. Although less know, MSH6 is yet another key player...
April 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28323727/experience-with-the-use-of-single-use-disposable-bronchoscope-in-the-icu-in-a-tertiary-referral-center-of-singapore
#13
Dominic C Marshall, Rucha S Dagaonkar, Chan Yeow, Anura T Peters, Siew Kin Tan, Dessmon Y H Tai, Soon Keng Gohs, Albert Y H Lim, Benjamin Ho, Sennen J W Lew, John Abisheganaden, Akash Verma
BACKGROUND: Flexible bronchoscopy is performed frequently in intensive care units (ICUs) for various indications using the reusable conventional bronchoscope (CB). Recently, "single-use disposable bronchoscope" (SB) was introduced into the health care industry. The purpose of this study was to compare the utility of SB with CB in ICU. METHODS: A retrospective review of medical records of patients undergoing flexible bronchoscopy in the ICUs in the year 2015. RESULTS: Ninety-three patients undergoing flexible bronchoscopy in the ICU were studied...
April 2017: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/28323660/impact-of-rare-variants-in-autosomal-dominant-hypercholesterolemia-causing-genes
#14
Sebastiano Calandra, Patrizia Tarugi, Stefano Bertolini
PURPOSE OF REVIEW: The systematic analysis of the major candidate genes in autosomal dominant hypercholesterolemia (ADH) and the use of next-generation sequencing (NGS) technology have made possible the discovery of several rare gene variants whose pathogenic effect in most cases remains poorly defined. RECENT FINDINGS: One major advance in the field has been the adoption of a set of international guidelines for the assignment of pathogenicity to low-density lipoprotein receptor (LDLR) gene variants based on the use of softwares, complemented with data available from literature and public databases...
March 18, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28323639/the-effect-of-boundary-slippage-and-nonlinear-rheological-response-on-flow-of-nanoconfined-water
#15
Amandeep Sekhon, V J Ajith, Shivprasad Vitthal Patil
The flow of water confined to nanometer-sized pores is central to a wide range of subjects from biology to nanofluidic devices. Despite its importance, a clear picture about nanoscale fluid dynamics is yet to emerge. Here we measured dissipation in less than 20 nm thick water films and it was found to decrease for both wetting and non-wetting confining surfaces. The fitting of Carreau-Yasuda model of shear thinning to our measurements implies that flow is non-Newtonian and for wetting surfaces the no-slip boundary condition is valid...
March 21, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28323454/interaction-behaviors-of-bilingual-parents-with-their-young-children-with-autism-spectrum-disorder
#16
Kristelle Hudry, Lisa Rumney, Nicole Pitt, Josephine Barbaro, Giacomo Vivanti
Given concerns that bilingual exposure might confuse children with disabilities-including autism spectrum disorder (ASD)-bilingual parents may restrict exposure to one language, often the community-dominant language. We investigated a potential consequence of this decision; the possibility that non-native language use might influence parental communicative behaviors during interaction with the child. We recruited 39 parent-child dyads, each with a young child with ASD (mostly boys) and parent/carer (mostly mothers)...
March 21, 2017: Journal of Clinical Child and Adolescent Psychology
https://www.readbyqxmd.com/read/28322724/valosin-containing-protein-vcp-p97-inhibitors-relieve-mitofusin-dependent-mitochondrial-defects-due-to-vcp-disease-mutants
#17
Ting Zhang, Prashant Mishra, Bruce Hay, David Chan, Ming Guo
Missense mutations of valosin-containing protein (VCP) cause an autosomal dominant disease known as inclusion body myopathy, Paget disease with frontotemporal dementia (IBMPFD) and other neurodegenerative disorders. The pathological mechanism of IBMPFD is not clear and there is no treatment. We show that endogenous VCP negatively regulates Mitofusin, which is required for outer mitochondrial membrane fusion. Because 90% of IBMPFD patients have myopathy, we generated an in vivo IBMPFD model in adult Drosophila muscle, which recapitulates disease pathologies...
March 21, 2017: ELife
https://www.readbyqxmd.com/read/28320166/the-duration-of-the-cortical-silent-period-is-not-abnormal-in-restless-legs-syndrome-willis-ekbom-disease
#18
Joselisa Péres Queiroz de Paiva, Samir Câmara Magalhães, Gilmar Fernandes do Prado, Alan Luiz Eckeli, Alain Kaelin-Lang, Adriana Bastos Conforto
OBJECTIVE: To compare the duration of the cortical silent period (CSP) measured in a hand muscle in subjects with primary Restless Legs Syndrome (RLS/WED) and controls, using four different methods of analysis. METHODS: The CSP to transcranial magnetic stimulation of the dominant motor cortex was assessed in the abductor digiti minimi of 33 subjects with RLS/WED and 24 controls. CSP duration was measured by an automated and three visually-guided methods. RESULTS: There were significant differences between absolute values of CSP duration according to the method of analysis...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28320145/vision-loss-in-tuberculous-meningitis
#19
REVIEW
Ravindra Kumar Garg, Hardeep Singh Malhotra, Neeraj Kumar, Ravi Uniyal
Vision loss is a disabling complication of tuberculous meningitis. Approximately, 15% of survivors are either completely or partially blind. All structures of the visual pathway may be affected in tuberculous meningitis. Optic nerve and optic chiasma are most frequently and dominantly affected. Thick-gelatinous exudates lying over the base of brain, are the pathological hallmark of tuberculous meningitis and are responsible for almost all of its major complications, including vision loss. Strangulation of optic nerves and optic chiasma by the exudates, compression over optic chiasma by the dilated third ventricle, raised intracranial pressure, endarteritis, shunt failure, bacterial invasion of optic nerves and drug-induced optic nerve damage are important reasons that are considered responsible for vision loss...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28320141/functional-magnetic-resonance-imaging-responses-in-cadasil
#20
Ikreet Cheema, Aaron R Switzer, Cheryl R McCreary, Michael D Hill, Richard Frayne, Bradley G Goodyear, Eric E Smith
OBJECTIVES: The magnitude of the blood oxygen dependent level (BOLD) functional MRI (fMRI) response to visual stimulation is reduced in the small vessel disease cerebral amyloid angiopathy (CAA), reflecting impaired vascular reactivity. We determined whether BOLD responses were reduced in another small vessel disease, cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). METHODS: BOLD fMRI data were collected using a visual stimulus (contrast-reversing checkerboard) and motor task (finger-tapping)...
April 15, 2017: Journal of the Neurological Sciences
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