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https://www.readbyqxmd.com/read/29786895/deep-brain-stimulation-treated-dystonia-trajectory-via-status-dystonicus
#1
Elodie Nerrant, Victoria Gonzalez, Christophe Milesi, Xavier Vasques, Diane Ruge, Thomas Roujeau, Isabel De Antonio Rubio, Fabienne Cyprien, Emilie Chan Seng, Diane Demailly, Agathe Roubertie, Alain Boularan, Fréderic Greco, Pierre-François Perrigault, Gilles Cambonie, Philippe Coubes, Laura Cif
BACKGROUND: Status dystonicus (SD) is a life-threatening condition. OBJECTIVE AND METHODS: In a dystonia cohort who developed status dystonicus, we analyzed demographics, background dystonia phenomenology and complexity, trajectory previous to-, via status dystonicus episodes, and evolution following them. RESULTS: Over 20 years, 40 of 328 dystonia patients who were receiving DBS developed 58 status dystonicus episodes. Dystonia was of pediatric onset (95%), frequently complex, and had additional cognitive and pyramidal impairment (62%) and MRI alterations (82...
May 22, 2018: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29786695/the-asthma-mobile-health-study-smartphone-data-collected-using-researchkit
#2
Yu-Feng Yvonne Chan, Brian M Bot, Micol Zweig, Nicole Tignor, Weiping Ma, Christine Suver, Rafhael Cedeno, Erick R Scott, Steven Gregory Hershman, Eric E Schadt, Pei Wang
Widespread adoption of smart mobile platforms coupled with a growing ecosystem of sensors including passive location tracking and the ability to leverage external data sources create an opportunity to generate an unprecedented depth of data on individuals. Mobile health technologies could be utilized for chronic disease management as well as research to advance our understanding of common diseases, such as asthma. We conducted a prospective observational asthma study to assess the feasibility of this type of approach, clinical characteristics of cohorts recruited via a mobile platform, the validity of data collected, user retention patterns, and user data sharing preferences...
May 22, 2018: Scientific Data
https://www.readbyqxmd.com/read/29786095/high-throughput-creation-and-functional-profiling-of-dna-sequence-variant-libraries-using-crispr-cas9-in-yeast
#3
Xiaoge Guo, Alejandro Chavez, Angela Tung, Yingleong Chan, Christian Kaas, Yi Yin, Ryan Cecchi, Santiago Lopez Garnier, Eric D Kelsic, Max Schubert, James E DiCarlo, James J Collins, George M Church
Construction and characterization of large genetic variant libraries is essential for understanding genome function, but remains challenging. Here, we introduce a Cas9-based approach for generating pools of mutants with defined genetic alterations (deletions, substitutions, and insertions) with an efficiency of 80-100% in yeast, along with methods for tracking their fitness en masse. We demonstrate the utility of our approach by characterizing the DNA helicase SGS1 with small tiling deletion mutants that span the length of the protein and a series of point mutations against highly conserved residues in the protein...
May 21, 2018: Nature Biotechnology
https://www.readbyqxmd.com/read/29785932/cortical-thickness-correlates-of-minor-neurological-signs-in-patients-with-first-episode-psychosis
#4
Simone Ciufolini, Maria Francesca Ponteduro, Tiago Reis-Marques, Heather Taylor, Valeria Mondelli, Carmine M Pariante, Stefania Bonaccorso, Raymond Chan, Andy Simmons, Anthony David, Marta Di Forti, Robin M Murray, Paola Dazzan
Neurological soft signs (NSS) are subtle abnormalities of motor and sensory function that are present in the absence of localized brain pathological lesions. In psychoses they have been consistently associated with a distinct pattern of cortical and subcortical brain structural alterations at the level of the heteromodal cortex and basal ganglia. However, a more specific and accurate evaluation of the cytoarchitecture of the cortical mantle could further advance our understanding of the neurobiological substrate of psychosis...
May 18, 2018: Schizophrenia Research
https://www.readbyqxmd.com/read/29785836/facing-death-alone-or-together-investigating-the-interdependence-of-death-anxiety-dysfunctional-attitudes-and-quality-of-life-in-patient-caregiver-dyads-confronting-lung-cancer
#5
Bobo Hi-Po Lau, Daniel F K Wong, Y L Fung, Jillian Zhou, Cecilia L W Chan, Amy Y M Chow
BACKGROUND: Based on the cognitive theory, anxiety arising from the awareness of death and dying may activate dysfunctional attitudes, which may then reduce quality of life. This study examined the interdependence and the mediating role of dysfunctional attitudes on the relationship between death anxiety and quality of life among patients with lung cancer and their caregivers. METHODS: From March 2016 to April 2017, 173 pairs of patients and their caregivers enrolled in a randomized controlled trial of psychosocial support...
May 21, 2018: Psycho-oncology
https://www.readbyqxmd.com/read/29785461/clinical-significance-of-appendiceal-diverticulum-a-significant-marker-for-appendiceal-neoplasia-in-australian-patients
#6
Daniel Leonard Chan, Christopher Lim, Arsalan Bakhtiar, Matthew Khoury, Michelle Smigelski, Dean Yeh, Praveen Ravindran
INTRODUCTION: Diverticula of the appendix (DA) have a reported incidence of up to 2.1%. They are primarily detected incidentally, through imaging and intraoperative or histologic diagnosis. This study's objective was to examine the prevalence of DA, and its relationship with inflammation and neoplasia, as well as review the literature with respect to clinical outcomes and ability to identify DA preoperatively. METHODOLOGY: A retrospective search of all patients undergoing an appendicectomy for right lower quadrant pain at a single institution between 2004 and 2017 was conducted...
May 21, 2018: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/29785262/evaluation-of-the-relevance-of-dili-predictive-hypotheses-in-early-drug-development-review-of-in-vitro-methodologies-vs-bddcs-classification
#7
Rosa Chan, Leslie Z Benet
Drug-induced liver injury (DILI) is a major safety concern; it occurs frequently; it is idiosyncratic; it cannot be adequately predicted; and a multitude of underlying mechanisms has been postulated. A number of experimental approaches to predict human DILI have been proposed utilizing in vitro screening such as inhibition of mitochondrial function, hepatobiliary transporter inhibition, reactive metabolite formation with and without covalent binding, and cellular health, but they have achieved only minimal success...
May 8, 2018: Toxicology Research
https://www.readbyqxmd.com/read/29784909/large-quantum-spin-hall-gap-in-single-layer-1t-wse-2
#8
P Chen, Woei Wu Pai, Y-H Chan, W-L Sun, C-Z Xu, D-S Lin, M Y Chou, A-V Fedorov, T-C Chiang
Two-dimensional (2D) topological insulators (TIs) are promising platforms for low-dissipation spintronic devices based on the quantum-spin-Hall (QSH) effect, but experimental realization of such systems with a large band gap suitable for room-temperature applications has proven difficult. Here, we report the successful growth on bilayer graphene of a quasi-freestanding WSe2 single layer with the 1T' structure that does not exist in the bulk form of WSe2 . Using angle-resolved photoemission spectroscopy (ARPES) and scanning tunneling microscopy/spectroscopy (STM/STS), we observe a gap of 129 meV in the 1T' layer and an in-gap edge state located near the layer boundary...
May 21, 2018: Nature Communications
https://www.readbyqxmd.com/read/29784840/oxidative-stress-and-first-line-antituberculosis-drug-induced-hepatotoxicity
#9
Wing Wai Yew, Kwok Chiu Chang, Denise P Chan
Hepatotoxicity induced by antituberculosis drugs is a serious adverse reaction with significant morbidity and even rarely mortality. This form of toxicity potentially impacts the treatment outcome of tuberculosis in some patients. Confining to first-line antituberculosis drugs, this review addresses whether and how oxidative stress, and more broadly, disturbance in redox homeostasis alongside mitochondrial dysfunction, may contribute to the hepatotoxicity induced by them. Risk factors for such toxicity that have been identified, in addition to genetic factors, principally include old age, malnutrition, alcoholism, chronic hepatitis C and chronic hepatitis B infection, HIV infection and pre-existing liver disease...
May 21, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29784802/electrochemical-trapping-of-metastable-mn-3-ions-for-activation-of-mno-2-oxygen-evolution-catalysts
#10
Zamyla Morgan Chan, Daniil A Kitchaev, Johanna Nelson Weker, Christoph Schnedermann, Kipil Lim, Gerbrand Ceder, William Tumas, Michael F Toney, Daniel G Nocera
Electrodeposited manganese oxide films are promising catalysts for promoting the oxygen evolution reaction (OER), especially in acidic solutions. The activity of these catalysts is known to be enhanced by the introduction of Mn3+ We present in situ electrochemical and X-ray absorption spectroscopic studies, which reveal that Mn3+ may be introduced into MnO2 by an electrochemically induced comproportionation reaction with Mn2+ and that Mn3+ persists in OER active films. Extended X-ray absorption fine structure (EXAFS) spectra of the Mn3+ -activated films indicate a decrease in the Mn-O coordination number, and Raman microspectroscopy reveals the presence of distorted Mn-O environments...
May 21, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29784698/aspects-of-multicomponent-integrated-care-promote-sustained-improvement-in-surrogate-clinical-outcomes-a-systematic-review-and-meta-analysis
#11
REVIEW
Lee Ling Lim, Eric S H Lau, Alice P S Kong, Melanie J Davies, Naomi S Levitt, Björn Eliasson, Carlos A Aguilar-Salinas, Guang Ning, Yutaka Seino, Wing Yee So, Margaret McGill, Graham D Ogle, Trevor J Orchard, Philip Clarke, Rury R Holman, Edward W Gregg, Juan José Gagliardino, Juliana C N Chan
OBJECTIVE: The implementation of the Chronic Care Model (CCM) improves health care quality. We examined the sustained effectiveness of multicomponent integrated care in type 2 diabetes. RESEARCH DESIGN AND METHODS: We searched PubMed and Ovid MEDLINE (January 2000-August 2016) and identified randomized controlled trials comprising two or more quality improvement strategies from two or more domains (health system, health care providers, or patients) lasting ≥12 months with one or more clinical outcomes...
June 2018: Diabetes Care
https://www.readbyqxmd.com/read/29783899/the-effect-of-tai-chi-training-on-the-dual-tasking-performance-of-stroke-survivors-a-randomized-controlled-trial
#12
Wing Nga Chan, William Wai-Nam Tsang
OBJECTIVE: To compare the effect of Tai Chi training with conventional exercise on dual-tasking performance among stroke survivors. DESIGN: An assessor-blinded, randomized controlled trial. SUBJECTS: Community-dwelling stroke survivors. SETTING: Community centers and university. INTERVENTIONS: Subjects in the Tai Chi group and the conventional exercise group were trained with the corresponding exercises for 12 weeks (1 hour/session, 2/week)...
May 1, 2018: Clinical Rehabilitation
https://www.readbyqxmd.com/read/29783865/flow-cytometry-based-epitope-binning-using-competitive-binding-profiles-for-the-characterization-of-monoclonal-antibodies-against-cellular-and-soluble-protein-targets
#13
Brian M Chan, Anita Badh, Kelly A Berry, Stephanie A Grauer, Chadwick T King
A key step in the therapeutic antibody drug discovery process is early identification of diverse candidate molecules. Information comparing antibody binding epitopes can be used to classify antibodies within a large panel, guiding rational lead molecule selection. We describe a novel epitope binning method utilizing high-throughput flow cytometry (HTFC) that leverages cellular barcoding or spectrally distinct beads to multiplex samples to characterize antibodies raised against cell membrane receptor or soluble protein targets...
May 1, 2018: SLAS Discovery
https://www.readbyqxmd.com/read/29783136/occurrence-and-estrogenic-activity-of-steroid-hormones-in-chinese-streams-a-nationwide-study-based-on-a-combination-of-chemical-and-biological-tools
#14
Bo Yao, Rui Li, Shuwen Yan, Shen-An Chan, Weihua Song
Steroid hormones (SHs) are continuously released into the aquatic environment through various pathways after being excreted by humans and animals, interfere with the normal function of the endocrine system and may affect the physiology and reproduction of exposed aquatic life. To conduct a nationwide investigation of the occurrence and biological effects of SHs in surface river/steam water in China, we quantitated 27 selected SHs in 217 surface water samples by solid-phase extraction (SPE) tandem LC-MS/MS and used a recombinant yeast estrogen assay to screen extracts of the water samples for estrogenic activities...
May 18, 2018: Environment International
https://www.readbyqxmd.com/read/29783018/tumor-inhibitory-effects-of-intravesical-ganoderma-lucidum-instillation-in-the-syngeneic-orthotopic-mb49-c57-bladder-cancer-mice-model
#15
J W M Yuen, D S Y Mak, E S Chan, M D I Gohel, C F Ng
ETHNOPHARMACOLOGICAL RELEVANCE: Ganoderma lucidum (GL) has been traditionally used in oriental medicine as superior health tonic, and there are numerous scientific evidences of its antitumorigenic activities. AIM OF THE STUDY: To evaluate the intravesical chemopreventive effects of ethanol extract of GL (GLe) on bladder cancer. MATERIALS AND METHODS: Intravesical therapy is defined as the direct instillation of a liquid drug into bladder through a catheter...
May 18, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29782548/dyslipidemia-among-rural-and-urban-hiv-patients-in-south-east-malawi
#16
Alemayehu Amberbir, Victor Singano, Alfred Matengeni, Zahra Ismail, Gift Kawalazira, Adrienne K Chan, Sumeet D Sodhi, Joep J van Oosterhout
BACKGROUND: While dyslipidemia importantly contributes to increased cardiovascular disease risk among patients on antiretroviral therapy (ART), data on lipid patterns among African adults on ART are limited. We describe the prevalence of lipid abnormalities and associated factors in two HIV clinics in Malawi. METHODS: We conducted a cross-sectional study in 2014 and enrolled adult patients at a rural and an urban HIV clinic in Zomba district, Malawi. We recorded patient characteristics, CVD risk factors and anthropometric measurements, using the WHO STEPS validated instrument...
2018: PloS One
https://www.readbyqxmd.com/read/29782518/objective-assessment-of-flap-volume-changes-and-aesthetic-results-after-adjuvant-radiation-therapy-in-patients-undergoing-immediate-autologous-breast-reconstruction
#17
Yujin Myung, Yousung Son, Tae-Hyun Nam, Eunyoung Kang, Eun-Kyu Kim, In Ah Kim, Keun-Yong Eom, Chan Yeong Heo, Jae Hoon Jeong
BACKGROUND: The use of immediate breast reconstruction and adjuvant radiation therapy is increasing in breast cancer patients. This study aimed to analyze the aesthetic outcome and changes in flap volume in patients with breast cancer undergoing radiation therapy of the surgical site after immediate autologous tissue reconstruction. METHODS: Immediate abdominal free flap breast reconstruction following unilateral mastectomy was performed in 42 patients; 21 patients received adjuvant radiation (study group) and 21 patients did not (control group)...
2018: PloS One
https://www.readbyqxmd.com/read/29782498/endoplasmic-reticulum-plasma-membrane-contact-sites-integrate-sterol-and-phospholipid-regulation
#18
Evan Quon, Yves Y Sere, Neha Chauhan, Jesper Johansen, David P Sullivan, Jeremy S Dittman, William J Rice, Robin B Chan, Gilbert di Paolo, Christopher T Beh, Anant K Menon
Tether proteins attach the endoplasmic reticulum (ER) to other cellular membranes, thereby creating contact sites that are proposed to form platforms for regulating lipid homeostasis and facilitating non-vesicular lipid exchange. Sterols are synthesized in the ER and transported by non-vesicular mechanisms to the plasma membrane (PM), where they represent almost half of all PM lipids and contribute critically to the barrier function of the PM. To determine whether contact sites are important for both sterol exchange between the ER and PM and intermembrane regulation of lipid metabolism, we generated Δ-super-tether (Δ-s-tether) yeast cells that lack six previously identified tethering proteins (yeast extended synatotagmin [E-Syt], vesicle-associated membrane protein [VAMP]-associated protein [VAP], and TMEM16-anoctamin homologues) as well as the presumptive tether Ice2...
May 21, 2018: PLoS Biology
https://www.readbyqxmd.com/read/29781941/cardiopulmonary-demand-of-16-kg-kettlebell-snatches-in-simulated-girevoy-sport
#19
Margaux Chan, Martin J MacInnis, Sarah Koch, Kristin E MacLeod, Keith R Lohse, Maria E Gallo, A William Sheel, Michael S Koehle
Chan, M, MacInnis, MJ, Koch, S, MacLeod, KE, Lohse, KR, Gallo, ME, Sheel, AW, and Koehle, MS. Cardiopulmonary demand of 16-kg kettlebell snatches in simulated Girevoy Sport. J Strength Cond Res XX(X): 000-000, 2018-Kettlebell lifting has become popular both as a strength and conditioning training tool and as a sport in and of itself: Girevoy Sport (GS). Although several kettlebell multimovement protocols have been analyzed, little research has attempted to quantify the aerobic stimulus of the individual events in GS, which could better inform kettlebell-related exercise prescription...
May 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29781911/what-is-the-frequency-of-early-dissociation-of-bipolar-cups-and-what-factors-are-associated-with-dissociation
#20
Young-Kyun Lee, Chan Ho Park, Yong-Chan Ha, Kyung-Hoi Koo
BACKGROUND: Dissociation between a prosthetic cup and femoral head is a rare complication of bipolar hemiarthroplasty that usually occurs during closed reduction of a dislocated bipolar cup. The dissociation usually results in reoperation because closed reduction is challenging. To our knowledge, no study has reported on the frequency of bipolar cup-femoral head dissociation, and risk factors for dissociation are unknown. QUESTIONS/PURPOSES: The purposes of this study were (1) to evaluate the frequency of dissociation of prosthetic femoral heads from bipolar cups during manual reduction of a dislocated bipolar hemiarthroplasty; and (2) to explore in a preliminary fashion any prosthesis or patient factors that may be associated with dissociation...
May 17, 2018: Clinical Orthopaedics and related Research
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