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https://www.readbyqxmd.com/read/29167851/what-regulates-the-catalytic-activities-in-age-catalysis-an-answer-from-quantum-mechanics-molecular-mechanics-simulations
#1
Yulai Zhang, Hongxing Zhang, Qingchuan Zheng
The AGE superfamily (AGEs) is made up of kinds of isomerase which are very important both physiologically and industrially. One of the most intriguing aspects of AGEs has to do with the mechanism that regulates their activities in single conserved active pocket. In order to clarify the relationship among single conserved active pocket and two activities in AGEs, results for the epimerization activity catalyzed by RaCE and the isomerization activity catalyzed by SeYihS were obtained by using QM/MM umbrella sampling simulations and 2D-FES calculations...
November 23, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29167152/rab27b-requirement-for-stretch-induced-exocytosis-in-bladder-umbrella-cells
#2
Luciana I Gallo, Marianela G Dalghi, Dennis R Clayton, Wily G Ruiz, Puneet Khandelwal, Gerard Apodaca
Umbrella cells, which must maintain a tight barrier, modulate their apical surface area during bladder filling by exocytosis of an abundant, subapical pool of discoidal- and/or fusiform-shaped vesicles (DFVs). Despite the importance of this trafficking event for bladder function, the pathways the promote DFV exocytosis remain to be identified. We previously showed that DFV exocytosis depends in part on a RAB11A-RAB8A-MYO5B network, but RAB27B is also reported to be associated with DFVs, and knockout mice lacking RAB27B have fewer DFVs...
November 22, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/29167102/coffee-consumption-and-health-umbrella-review-of-meta-analyses-of-multiple-health-outcomes
#3
Robin Poole, Oliver J Kennedy, Paul Roderick, Jonathan A Fallowfield, Peter C Hayes, Julie Parkes
Objectives To evaluate the existing evidence for associations between coffee consumption and multiple health outcomes.Design Umbrella review of the evidence across meta-analyses of observational and interventional studies of coffee consumption and any health outcome.Data sources PubMed, Embase, CINAHL, Cochrane Database of Systematic Reviews, and screening of references.Eligibility criteria for selecting studies Meta-analyses of both observational and interventional studies that examined the associations between coffee consumption and any health outcome in any adult population in all countries and all settings...
November 22, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/29158657/academic-community-partnership-development-to-enhance-program-outcomes-in-underserved-communities-a-case-study
#4
Meg Skizim, Nick Harris, Claudia Leonardi, Richard Scribner
Purpose: A community-academic partnership was developed to assess community needs and restructure a variety of community-based programs that provide services to underserved communities in New Orleans, Louisiana. Methods: The community and academic partners utilized five phases to assess community needs and restructure programs: 1) meetings; 2) narrowing the scope of community programs; 3) data collection and analysis; 4) emphasizing target programs; and 5) improving sustainability through grant submissions and grant development training...
2017: Ethnicity & Disease
https://www.readbyqxmd.com/read/29158551/the-international-rare-diseases-research-consortium-policies-and-guidelines-to-maximize-impact
#5
Hanns Lochmüller, Josep Torrent I Farnell, Yann Le Cam, Anneliene H Jonker, Lilian Pl Lau, Gareth Baynam, Petra Kaufmann, Hugh Js Dawkins, Paul Lasko, Christopher P Austin, Kym M Boycott
The International Rare Diseases Research Consortium (IRDiRC) has agreed on IRDiRC Policies and Guidelines, following extensive deliberations and discussions in 2012 and 2013, as a first step towards improving coordination of research efforts worldwide. The 25 funding members and 3 patient umbrella organizations (as of early 2013) of IRDiRC, a consortium of research funders that focuses on improving diagnosis and therapy for rare disease patients, agreed in Dublin, Ireland in April 2013 on the Policies and Guidelines that emphasize collaboration in rare disease research, the involvement of patients and their representatives in all relevant aspects of research, as well as the sharing of data and resources...
November 20, 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/29157970/vertical-characteristics-of-vocs-in-the-lower-troposphere-over-the-north-china-plain-during-pollution-periods
#6
Jie Sun, Yuesi Wang, Fangkun Wu, Guiqian Tang, Lili Wang, Yinghong Wang, Yuan Yang
In recent years, photochemical smog and gray haze-fog have frequently appeared over northern China. To determine the spatial distribution of volatile organic compounds (VOC) during a pollution period, tethered balloon flights were conducted over a suburban site on the North China Plain. Statistical analysis showed that the VOCs concentrations peaked at the surface, and decreased with altitude. A rapid decrease appeared from the surface to 400 m, with concnetrations of alkanes, alkenes, aromatics and halocarbons decreasing by 48...
November 17, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29155663/frameworks-for-preventing-detecting-and-controlling-zoonotic-diseases
#7
Miriam L Shiferaw, Jeffrey B Doty, Giorgi Maghlakelidze, Juliette Morgan, Ekaterine Khmaladze, Otar Parkadze, Marina Donduashvili, Emile Okitolonda Wemakoy, Jean-Jacques Muyembe, Leopold Mulumba, Jean Malekani, Joelle Kabamba, Theresa Kanter, Linda Lucy Boulanger, Abraham Haile, Abyot Bekele, Meseret Bekele, Kasahun Tafese, Andrea A McCollum, Mary G Reynolds
Preventing zoonotic diseases requires coordinated actions by government authorities responsible for human and animal health. Constructing the frameworks needed to foster intersectoral collaboration can be approached in many ways. We highlight 3 examples of approaches to implement zoonotic disease prevention and control programs. The first, rabies control in Ethiopia, was implemented using an umbrella approach: a comprehensive program designed for accelerated impact. The second, a monkeypox program in Democratic Republic of the Congo, was implemented in a stepwise manner, whereby incremental improvements and activities were incorporated into the program...
December 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29151089/capgras-syndrome-and-other-delusional-misidentification-syndromes
#8
Alain Barrelle, J-P Luauté
The delusional misidentification syndromes (DMS) are a group of disorders, characterized by patients mistaking the identity of people they know, although they recognize them physically. The term DMS is an umbrella term which may cover disorders whose definition extends to objects other than people, such as animals, places, or familiar material objects. The most common and best known DMS is Capgras syndrome. In this disorder, the misidentification leads to the delusional conviction that a close friend or relative has been replaced by an identical - or almost identical - "double," whose original has disappeared...
2018: Frontiers of Neurology and Neuroscience
https://www.readbyqxmd.com/read/29146752/physical-activity-and-cancer-an-umbrella-review-of-the-literature-including-22-major-anatomical-sites-and-770%C3%A2-000-cancer-cases
#9
REVIEW
Leandro Fórnias Machado de Rezende, Thiago Hérick de Sá, Georgios Markozannes, Juan Pablo Rey-López, I-Min Lee, Konstantinos K Tsilidis, John P A Ioannidis, José Eluf-Neto
OBJECTIVE: To provide an overview of the breadth and validity of claimed associations between physical activity and risk of developing or dying from cancer. DESIGN: Umbrella review. DATA SOURCES: We searched Medline, Embase, Cochrane Database and Web of Science. ELIGIBILITY CRITERIA FOR SELECTING STUDIES: Systematic reviews about physical activity and cancer incidence and cancer mortality in different body sites among general population...
November 16, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29143991/genetic-and-non-genetic-risk-factors-for-pre-eclampsia-an-umbrella-review-of-systematic-reviews-and-meta-analyses-of-observational-studies
#10
REVIEW
Konstantinos Giannakou, Evangelos Evangelou, Stefania I Papatheodorou
OBJECTIVE: To summarize evidence from the literature on the risk factors associated with preeclampsia, assess the presence of statistical biases and identify associations with robust evidence. METHODS: We searched PubMed and ISI Web of Science from inception to October, 2016, to identify systematic reviews and meta-analyses of observational studies examining associations between genetic and non-genetic risk factors for preeclampsia. For each meta-analysis we estimated the summary effect size by random-effects and fixed-effects models, the 95% confidence interval and the 95% prediction interval...
November 16, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29143005/photodissociation-of-the-ch3o-and-ch3s-radical-molecules-an-ab-initio-electronic-structure-study
#11
A Bouallagui, A Zanchet, O Yazidi, N Jaïdane, L Bañares, M L Senent, A García-Vela
The electronic states and the spin-orbit couplings between them involved in the photodissociation process of the radical molecules CH3X, CH3X → CH3 + X (X = O, S), taking place after the Ã((2)A1) ← X[combining tilde]((2)E) transition, have been investigated using highly correlated ab initio techniques. A two-dimensional representation of both the potential-energy surfaces (PESs) and the couplings is generated. This description includes the C-X dissociative mode and the CH3 umbrella mode. Spin-orbit effects are found to play a relevant role in the shape of the excited state potential-energy surfaces, particularly in the CH3S case where the spin-orbit couplings are more than twice more intense than in CH3O...
November 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29135745/factors-influencing-self-management-in-adults-with-diabetes-an-umbrella-review-protocol
#12
Ketia Alexandre, Olivier Desrichard, Bernard Burnand, Isabelle Peytremann-Bridevaux
The aim of this umbrella review is to identify and describe factors influencing diabetes self-management (DSM) in adults with diabetes. More specifically, we will address DSM-related factors and their relationships, considering both qualitative and quantitative components of available literature.The review question for the qualitative component of the umbrella review is:The review questions for the quantitative component of the umbrella review are:An additional question will be applied to both the qualitative and quantitative components of the overview...
November 2017: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/29134069/engaging-rural-australian-communities-in-national-science-week-helps-increase-visibility-for-women-researchers
#13
Margaret C Hardy, Mathilde R Desselle
During a week-long celebration of science, run under the federally supported National Science Week umbrella, the Catch a Rising Star: women in Queensland research (CaRS) programme flew scientists who identify as women to nine regional and remote communities in the Australian State of Queensland. The aim of the project was twofold: first, to bring science to remote and regional communities in a large, economically diverse state; and second, to determine whether media and public engagement provides career advancement opportunities for women scientists...
October 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29133939/precision-medicine-for-urothelial-bladder-cancer-update-on-tumour-genomics-and-immunotherapy
#14
REVIEW
Kenneth M Felsenstein, Dan Theodorescu
Effective management of advanced urothelial bladder cancer is challenging. New discoveries that improve our understanding of molecular bladder cancer subtypes have revealed numerous potentially targetable genomic alterations and demonstrated the efficacy of treatments that harness the immune system. These findings have begun to change paradigms of bladder cancer therapy. For example, DNA repair pathway mutations in genes such as ERCC2, FANCC, ATM, RB1, and others can predict responses to neoadjuvant platinum-based chemotherapies and to targeted therapies on the basis of mutation status...
November 14, 2017: Nature Reviews. Urology
https://www.readbyqxmd.com/read/29131647/on-the-efficient-construction-of-free-energy-profiles-of-breathing-metal-organic-frameworks-using-advanced-molecular-dynamics-simulations
#15
Ruben Demuynck, Sven M J Rogge, Louis Vanduyfhuys, Jelle Wieme, Michel Waroquier, Veronique Van Speybroeck
In order to reliably predict and understand the breathing behavior of highly flexible metal-organic frameworks from thermodynamic considerations, an accurate estimation of the free energy difference between their different metastable states is prerequisite. Herein, a variety of free energy estimation methods are thoroughly tested for their ability to construct the free energy profile as a function of the unit cell volume of MIL-53(Al). The methods comprise free energy perturbation, thermodynamic integration, umbrella sampling, metadynamics, and variationally enhanced sampling...
November 13, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/29130942/high-grade-urothelial-carcinoma-on-urine-cytology-resembling-umbrella-cells
#16
Andrew A Renshaw, Edwin W Gould
CONTEXT: High-grade urothelial carcinoma (UC) cells have many appearances on urine cytology, but according to The Paris System, they can be easily distinguished from umbrella cells. OBJECTIVE: We aimed to define the incidence and appearance of high-grade UC cells that resemble umbrella cells in Cytospin preparations on urine cytology. RESULTS: Cytospin preparations from 331 cases with biopsy follow-up (230 benign/low-grade and 101 malignant [22 carcinoma in situ, 52 papillary, 19 invasive UC, 8 other] cases) were reviewed...
November 11, 2017: Acta Cytologica
https://www.readbyqxmd.com/read/29126990/a-proanthocyanidin-rich-extract-from-cassia-abbreviata-exhibits-antioxidant-and-hepatoprotective-activities-in-vivo
#17
Mansour Sobeh, Mona F Mahmoud, Mohamed A O Abdelfattah, Haroan Cheng, Assem M El-Shazly, Michael Wink
ETHNOPHARMACOLOGICAL RELEVANCE: Cassia abbreviata is a small to medium sized branched umbrella-shaped deciduous tree. It is widely spread in the tropics, especially in Africa, having a long history in traditional medicine for the treatment of numerous conditions such as headaches, diarrhea, constipation, some skin diseases, malaria, syphilis, pneumonia, stomach troubles, uterine pains, and against gonorrhea. AIM OF THE STUDY: We investigated the phytochemical constituents of a root extract from Cassia abbreviata using HPLC-PDA-ESI-MS/MS...
November 7, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29125085/-the-objective-of-advance-care-planning
#18
J J M van Delden
This commentary reflects on a study to determine the efficacy of an advance care planning (ACP) website in increasing planning documentation. It is interesting to see that ACP is considered to be a regular intervention. ACP thus ceases to be something to believe in or not and becomes a normal intervention, the efficacy of which can be studied. The study also shows that ACP is a concept which can take many forms, that ACP in itself is almost an umbrella term and that physicians need not take the central role in ACP...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29118629/austromonticola-a-new-genus-of-broad-nosed-weevil-coleoptera-curculionidae-entiminae-from-montane-areas-of-new-zealand
#19
Samuel D J Brown
Austromonticolagen. n. is proposed for a group of eight New Zealand alpine broad-nosed weevil species, all of which are here described: A. atriariussp. n. (type locality: Umbrella Mountains, Central Otago), A. caelibatussp. n. (type locality: Ohau Range, Mackenzie), A. furcatussp. n. (type locality: Old Man Range, Central Otago), A. inflatussp. n. (type locality: Hawkdun Range, Central Otago), A. planulatussp. n. (type locality: St Marys Range, Central Otago), A. postinventussp. n. (type locality: Kirkliston Range, South Canterbury), A...
2017: ZooKeys
https://www.readbyqxmd.com/read/29117700/optimal-updating-magnitude-in-adaptive-flat-distribution-sampling
#20
Cheng Zhang, Justin A Drake, Jianpeng Ma, B Montgomery Pettitt
We present a study on the optimization of the updating magnitude for a class of free energy methods based on flat-distribution sampling, including the Wang-Landau (WL) algorithm and metadynamics. These methods rely on adaptive construction of a bias potential that offsets the potential of mean force by histogram-based updates. The convergence of the bias potential can be improved by decreasing the updating magnitude with an optimal schedule. We show that while the asymptotically optimal schedule for the single-bin updating scheme (commonly used in the WL algorithm) is given by the known inverse-time formula, that for the Gaussian updating scheme (commonly used in metadynamics) is often more complex...
November 7, 2017: Journal of Chemical Physics
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