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https://www.readbyqxmd.com/read/29151219/implementation-of-the-nmr-chemical-shift-covariance-analysis-chesca-a-chemical-biologist-s-approach-to-allostery
#1
Stephen Boulton, Rajeevan Selvaratnam, Rashik Ahmed, Giuseppe Melacini
Mapping allosteric sites is emerging as one of the central challenges in physiology, pathology, and pharmacology. Nuclear Magnetic Resonance (NMR) spectroscopy is ideally suited to map allosteric sites, given its ability to sense at atomic resolution the dynamics underlying allostery. Here, we focus specifically on the NMR CHEmical Shift Covariance Analysis (CHESCA), in which allosteric systems are interrogated through a targeted library of perturbations (e.g., mutations and/or analogs of the allosteric effector ligand)...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29151137/blood-brain-barrier-transport-and-neuroprotective-potential-of-blackberry-digested-polyphenols-an-in-vitro-study
#2
Inês Figueira, Lucélia Tavares, Carolina Jardim, Inês Costa, Ana P Terrasso, Andreia F Almeida, Coen Govers, Jurriaan J Mes, Rui Gardner, Jörg D Becker, Gordon J McDougall, Derek Stewart, Augusto Filipe, Kwang S Kim, Dora Brites, Catarina Brito, M Alexandra Brito, Cláudia N Santos
PURPOSE: Epidemiological and intervention studies have attempted to link the health effects of a diet rich in fruits and vegetables with the consumption of polyphenols and their impact in neurodegenerative diseases. Studies have shown that polyphenols can cross the intestinal barrier and reach concentrations in the bloodstream able to exert effects in vivo. However, the effective uptake of polyphenols into the brain is still regarded with some reservations. Here we describe a combination of approaches to examine the putative transport of blackberry-digested polyphenols (BDP) across the blood-brain barrier (BBB) and ultimate evaluation of their neuroprotective effects...
November 18, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/29151053/protocol-of-the-sepsivit-study-a-prospective-observational-study-to-determine-whether-continuous-heart-rate-variability-measurement-during-the-first-48-hours-of-hospitalisation-provides-an-early-warning-for-deterioration-in-patients-presenting-with-infection
#3
Vincent M Quinten, Matijs van Meurs, Maurits H Renes, Jack J M Ligtenberg, Jan C Ter Maaten
INTRODUCTION: One in five patients with sepsis deteriorates within 48 hours after hospital admission. Regrettably, a clear tool for the early detection of deterioration is still lacking. The SepsiVit study aims to determine whether continuous heart rate variability (HRV) measurement can provide an early warning for deterioration in patients presenting with suspected infection or sepsis to the emergency department (ED). METHODS AND ANALYSIS: The protocol of a prospective observational study in the ED...
November 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/29150856/defining-sepsis-on-the-wards-results-of-a-multi-centre-point-prevalence-study-comparing-two-sepsis-definitions
#4
T Szakmany, R Pugh, M Kopczynska, R M Lundin, B Sharif, P Morgan, G Ellis, J Abreu, S Kulikouskaya, K Bashir, L Galloway, H Al-Hassan, T Grother, P McNulty, S T Seal, A Cains, M Vreugdenhil, M Abdimalik, N Dennehey, G Evans, J Whitaker, E Beasant, C Hall, M Lazarou, C V Vanderpump, K Harding, L Duffy, A Guerrier Sadler, R Keeling, C Banks, S W Y Ng, S Y Heng, D Thomas, E W Puw, I Otahal, C Battle, O Minik, R A Lyons, J E Hall
Our aim was to prospectively determine the predictive capabilities of SEPSIS-1 and SEPSIS-3 definitions in the emergency departments and general wards. Patients with National Early Warning Score (NEWS) of 3 or above and suspected or proven infection were enrolled over a 24-h period in 13 Welsh hospitals. The primary outcome measure was mortality within 30 days. Out of the 5422 patients screened, 431 fulfilled inclusion criteria and 380 (88%) were recruited. Using the SEPSIS-1 definition, 212 patients had sepsis...
November 17, 2017: Anaesthesia
https://www.readbyqxmd.com/read/29150779/perioperative-transesophageal-echocardiography-for-non-cardiac-surgery
#5
REVIEW
Ashraf Fayad, Sasha K Shillcutt
PURPOSE: The use of transesophageal echocardiography (TEE) has evolved to include patients undergoing high-risk non-cardiac procedures and patients with significant cardiac disease undergoing non-cardiac surgery. Implementation of basic TEE education in training programs has increased across a broad spectrum of procedures in the perioperative arena. This paper describes the use of perioperative TEE in non-cardiac surgery and provides an overview of the basic TEE examination. PRINCIPAL FINDINGS: Perioperative TEE is used to monitor hemodynamic parameters in non-cardiac procedures where there is a high risk of hemodynamic instability...
November 17, 2017: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/29150509/the-tape-measure-protein-is-involved-in-the-heat-stability-of-lactococcus-lactis-phages
#6
Hany Geagea, Simon J Labrie, Muriel Subirade, Sylvain Moineau
Virulent lactococcal phages are still a major risk for milk fermentation processes as they may lead to slowdowns and low quality fermented dairy products, particularly cheeses. Some of the phage control strategies used by the industry rely on heat treatments. Recently, a few Lactococcus lactis phages were found to be highly thermo-resistant. To identify the genetic determinant(s) responsible for the thermal resistance of lactococcal phages, we used the virulent phage CB14 (sk1virus/936 group) to select for phage mutants with increased heat stability...
November 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29150501/glna-truncation-in-salmonella-enterica-results-in-a-small-colony-variant-phenotype-attenuated-host-cell-entry-and-reduced-expression-of-flagellin-and-spi-1-associated-effector-genes
#7
Philipp Aurass, Juliane Düvel, Susanne Karste, Ulrich Nübel, Wolfgang Rabsch, Antje Flieger
Many pathogenic bacteria use sophisticated survival strategies to overcome harsh environmental conditions. One is the formation of slow-growing subpopulations termed small colony variants (SCVs). Here we characterize an SCV, which spontaneously emerged from an axenic Salmonella enterica serovar Typhimurium water culture. We found that the SCV harbors a frameshift mutation in the glutamine synthetase gene glnA leading to a ∼90% truncation of the corresponding protein. Glutamine synthetase, a central enzyme in nitrogen assimilation, converts glutamate and ammonia to glutamine...
November 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29150499/understanding-functional-roles-of-native-pentose-specific-transporters-for-activating-dormant-pentose-metabolism-in-yarrowia-lipolytica
#8
Seunghyun Ryu, Cong T Trinh
Pentoses including xylose and arabinose are the second-most prevalent sugars of lignocellulosic biomass that can be harnessed for biological conversion. Although Yarrowia lipolytica has emerged as a promising industrial microorganism for production of high-value chemicals and biofuels, its native pentose metabolism is poorly understood. Our previous study demonstrated that Y. lipolytica (ATCC MYA-2613) has endogenous enzymes for D-xylose assimilation, but inefficient xylitol dehydrogenase causes Y. lipolytica to assimilate xylose poorly...
November 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29150238/a-t-cell-receptor-locus-harbors-a-malaria-specific-immune-response-gene
#9
Natalija Van Braeckel-Budimir, Stephanie Gras, Kristin Ladell, Tracy M Josephs, Lecia Pewe, Stina L Urban, Kelly L Miners, Carine Farenc, David A Price, Jamie Rossjohn, John T Harty
Immune response (Ir) genes, originally proposed by Baruj Benacerraf to explain differential antigen-specific responses in animal models, have become synonymous with the major histocompatibility complex (MHC). We discovered a non-MHC-linked Ir gene in a T cell receptor (TCR) locus that was required for CD8(+) T cell responses to the Plasmodium berghei GAP5040-48 epitope in mice expressing the MHC class I allele H-2D(b). GAP5040-48-specific CD8(+) T cell responses emerged from a very large pool of naive Vβ8...
November 10, 2017: Immunity
https://www.readbyqxmd.com/read/29150228/surgeons-perceptions-of-the-causes-of-preventable-harm-in-arterial-surgery-a-mixed-methods-study
#10
Rachael Lear, Anthony D Godfrey, Celia Riga, Christine Norton, Charles Vincent, Colin D Bicknell
BACKGROUND: System factors contributing to preventable harm in vascular patients have not been previously reported in detail. The aim of this exploratory mixed-methods study was to describe vascular surgeons' perceptions of factors contributing to adverse events (AEs) in arterial surgery. A secondary aim was to report recommendations to improve patient safety. METHODS: Vascular consultants/registrars working in the British National Health Service were questioned about the causes of preventable AEs through survey and semi-structured interview (response rates 77% and 83%, respectively)...
November 15, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29150177/the-sociocultural-context-of-emotion-socialization-in-african-american-families
#11
REVIEW
Madelyn H Labella
The current paper systematically reviews empirical research on parental emotion socialization in African American families, addressing gaps in a literature that has historically focused on White middle class samples. Of the 1210 studies screened, 329 were inspected, 280 were excluded, and 49 were included. Studies addressed emotion-related beliefs and attitudes, emotion expressiveness, discussion of emotion, and responses to children's emotion. Mixed findings are interpreted in light of sociocultural factors...
October 24, 2017: Clinical Psychology Review
https://www.readbyqxmd.com/read/29150145/neuroimaging-biomarkers-as-predictors-of-treatment-outcome-in-major-depressive-disorder
#12
REVIEW
Trehani M Fonseka, Glenda M MacQueen, Sidney H Kennedy
BACKGROUND: Current practice for selecting pharmacological and non-pharmacological antidepressant treatments has yielded low response and remission rates in Major Depressive Disorder (MDD). Neuroimaging biomarkers of brain structure and function may be useful in guiding treatment selection by predicting response vs. non-response outcomes. METHODS: In this review, we summarize data from studies examining predictors of treatment response using structural and functional neuroimaging modalities, as they pertain to pharmacotherapy, psychotherapy, and stimulation treatment strategies...
October 31, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29150105/for-survival-the-emergence-of-oligoclonal-bands-after-multiple-myeloma-treatment-is-less-important-than-achieving-complete-remission
#13
Luiza Soares Vieira da Silva, Edvan de Queiroz Crusoe, Lais Rocha Guimarães de Souza, Carlos Sérgio Chiattone, Vânia Tietsche de Moraes Hungria
BACKGROUND: The emergence of oligoclonal bands, proteins differing from those originally identified at diagnosis, has been reported in multiple myeloma patients after high-dose chemotherapy followed by autologous stem cell transplantation and after successful conventional chemotherapy. The clinical relevance of oligoclonal bands remains unclear, but their emergence has been associated with better prognosis. The aim of the present study was to determine the prevalence, clinical characteristics and prognostic impact of the presence of oligoclonal bands in multiple myeloma patients...
October 2017: Revista Brasileira de Hematologia e Hemoterapia
https://www.readbyqxmd.com/read/29149879/risk-management-of-emergency-service-vehicle-crashes-in-the-united-states-fire-service-process-outputs-and-recommendations
#14
David P Bui, Keshia P Porter, Stephanie Griffin, Dustin D French, Alesia M Jung, Stephen Crothers, Jefferey L Burgess
BACKGROUND: Emergency service vehicle crashes (ESVCs) are a leading cause of death in the United States fire service. Risk management (RM) is a proactive process for identifying occupational risks and reducing hazards and unwanted events through an iterative process of scoping hazards, risk assessment, and implementing controls. We describe the process, outputs, and lessons learned from the application of a proactive RM process to reduce ESVCs in US fire departments. METHODS: Three fire departments representative of urban, suburban, and rural geographies, participated in a facilitated RM process delivered through focus groups and stakeholder discussion...
November 17, 2017: BMC Public Health
https://www.readbyqxmd.com/read/29149877/key-bottlenecks-to-the-provision-of-safe-obstetric-anaesthesia-in-low-income-countries-a-cross-sectional-survey-of-64-hospitals-in-uganda
#15
Isabella Epiu, Agnes Wabule, Andrew Kambugu, Harriet Mayanja-Kizza, Jossy Verel Bahe Tindimwebwa, Gerald Dubowitz
BACKGROUND: Despite recent advances in surgery and anaesthesia which significantly improve safety, many health facilities in low-and middle-income countries (LMICs) remain chronically under-resourced with inability to cope effectively with serious obstetric complications (Knight et al., PLoS One 8:e63846, 2013). As a result many of these countries still have unacceptably high maternal and neonatal mortality rates. Recent data at the national referral hospitals in East Africa reported that none of the national referral hospitals met the World Federation of Societies of Anesthesiologists (WFSA) international standards required to provide safe obstetric anaesthesia (Epiu I: Challenges of Anesthesia in Low-and Middle-Income Countries...
November 17, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29149506/integrating-soft-and-hard-tissues-via-interface-tissue-engineering
#16
REVIEW
Sahishnu Patel, Jon-Michael Caldwell, Stephen B Doty, William N Levine, Scott Rodeo, Louis J Soslowsky, Stavros Thomopoulos, Helen H Lu
The enthesis, or interface between bone and soft tissues such as ligament and tendon, is prone to injury and often does not heal post-surgical intervention. Interface tissue engineering represents an integrative strategy for regenerating the native enthesis by functionally connecting soft and hard tissues and thereby improving clinical outcome. This review focuses on integrative and cell-instructive scaffold designs that target the healing of the two most commonly injured soft tissue-bone junctions: the tendon-bone interface (e...
November 17, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29149405/current-understanding-of-the-tctp-interactome
#17
Siting Li, Feng Ge
Evolutionarily conserved and pleiotropic, the translationally controlled tumor protein (TCTP) is a housekeeping protein present in eukaryotic organisms. It plays an important role in regulating many fundamental processes, such as cell proliferation, cell death, immune responses, and apoptosis. As a result of the pioneer work by Adam Telerman and Robert Amson, the critical role of TCTP in tumor reversion was revealed. Moreover, TCTP has emerged as a regulator of cell fate determination and a promising therapeutic target for cancers...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149396/a-survey-on-pediatric-brain-death-and-on-organ-transplantation-how-did-the-law-amendment-change-the-awareness-of-pediatric-healthcare-providers
#18
Takashi Araki, Hiroyuki Yokota, Koutaro Ichikawa
OBJECTIVES: In Japanese society taking a cautious attitude towards organ transplantation, we investigate how amendment of the Organ Transplant Law which legalized brain death (BD) determination criteria changed the awareness concerning BD and organ transplantation of pediatric healthcare providers. METHODS: The questionnaire survey adopted the bearer method and was sent to members of the Japanese Society of Emergency Pediatrics (JSEP). In both the surveys of 2008 and 2016, the same item "Questionnaire survey on BD and organ transplant" was disseminated...
October 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29149379/efficacy-of-systemic-and-intratympanic-corticosteroid-combination-therapy-versus-intratympanic-or-systemic-therapy-in-patients-with-idiopathic-sudden-sensorineural-hearing-loss-a-randomized-controlled-trial
#19
Mohammadtaghi Khorsandi Ashtiani, Farzad Firouzi, Shahin Bastaninejad, Sasan Dabiri, Sevil Nasirmohtaram, Niloufar Saeedi, Hossein Ghazavi, Leyla Sahebi
OBJECTIVE: The present study was conducted to compare the rates of recovery from idiopathic sudden deafness after the treatment with oral and intratympanic corticosteroids in both mono and combination therapies. STUDY DESIGN: Triple-blind randomized clinical trial. SETTINGS: Tertiary referral hospital. SUBJECTS AND METHODS: A total of 112 patients who were admitted to the ENT emergency department randomly divided into three groups: an oral corticosteroid plus intratympanic placebo (systemic corticosteroid monotherapy group); an intratympanic corticosteroid plus oral placebo group (IT monotherapy group); and a combination therapy group (IT plus systemic combination group)...
November 17, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29149337/mechanisms-leading-to-in-vivo-ceftolozane-tazobactam-resistance-development-during-the-treatment-of-infections-caused-by-mdr-pseudomonas-aeruginosa
#20
Pablo A Fraile-Ribot, Gabriel Cabot, Xavier Mulet, Leonor Periañez, M Luisa Martín-Pena, Carlos Juan, José L Pérez, Antonio Oliver
Objectives: Characterization of the mechanisms driving ceftolozane/tazobactam resistance development in 5 of 47 (10.6%) patients treated for MDR Pseudomonas aeruginosa infections in a Spanish hospital. Methods: Five pairs of ceftolozane/tazobactam-susceptible/resistant P. aeruginosa isolates were studied. MICs were determined by broth microdilution, clonal relatedness was assessed by MLST and resistance mechanisms were investigated by phenotypic and genotypic methods, including WGS...
November 14, 2017: Journal of Antimicrobial Chemotherapy
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