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https://www.readbyqxmd.com/read/28101727/reliable-prediction-of-adsorption-isotherms-via-genetic-algorithm-molecular-simulation
#1
L LoftiKatooli, A Shahsavand
Conventional molecular simulation techniques such as grand canonical Monte Carlo (GCMC) strictly rely on purely random search inside the simulation box for predicting the adsorption isotherms. This blind search is usually extremely time demanding for providing a faithful approximation of the real isotherm and in some cases may lead to non-optimal solutions. A novel approach is presented in this article which does not use any of the classical steps of the standard GCMC method, such as displacement, insertation, and removal...
January 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/28100637/a-zip3-like-protein-plays-a-role-in-crossover-formation-in-the-sc-less-meiosis-of-the-protist-tetrahymena
#2
Anura Shodhan, Kensuke Kataoka, Kazufumi Mochizuki, Maria Novatchkova, Josef Loidl
When programmed meiotic DNA double-strand breaks (DSBs) undergo recombinational repair, genetic crossovers (COs) may be formed. A certain level of these are required for the faithful segregation of chromosomes, but the majority of DSBs are processed toward a safer alternative, namely non-crossovers (NCOs), via non-reciprocal DNA exchange. At the crossroads between these two DSB fates are the Msh4-Msh5 (MutSγ) complex, which stabilizes CO-destined recombination intermediates, and members of the Zip3/RNF212 family of RING finger proteins, which in turn stabilize MutSγ...
January 18, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28100241/personalized-life-expectancy-and-treatment-benefit-index-of-antiretroviral-therapy
#3
Yanni Xiao, Xiaodan Sun, Sanyi Tang, Yicang Zhou, Zhihang Peng, Jianhong Wu, Ning Wang
BACKGROUND: The progression of Human Immunodeficiency Virus (HIV) within host includes typical stages and the Antiretroviral Therapy (ART) is shown to be effective in slowing down this progression. There are great challenges in describing the entire HIV disease progression and evaluating comprehensive effects of ART on life expectancy for HIV infected individuals on ART. METHODS: We develop a novel summative treatment benefit index (TBI), based on an HIV viral dynamics model and linking the infection and viral production rates to the Weibull function...
January 18, 2017: Theoretical Biology & Medical Modelling
https://www.readbyqxmd.com/read/28100040/induced-pluripotent-stem-cell-research-in-the-era-of-precision-medicine
#4
Takashi Hamazaki, Nihal El Rouby, Natalie C Fredette, Katherine E Santostefano, Naohiro Terada
Recent advances in DNA sequencing technologies are revealing how human genetic variations associate with differential health risks, disease susceptibilities and drug responses. Such information is now expected to help evaluate individual health risks, design personalized health plans and treat patients with precision. It is still challenging, however, to understand how such genetic variations cause the phenotypic alterations in pathobiologies and treatment response. Human induced pluripotent stem cell (iPSC) technologies are emerging as a promising strategy to fill the knowledge gaps between genetic association studies and underlying molecular mechanisms...
January 18, 2017: Stem Cells
https://www.readbyqxmd.com/read/28098313/the-glass-transition-and-interfacial-dynamics-of-single-strand-fibers-of-polymers
#5
Hyun Woo Cho, Bong June Sung
We investigate the glass transition and interfacial dynamics of single strand fibers of flexible polymers by employing molecular dynamics (MD) simulations along with a coarse grained model. While the polymer fiber has drawn significant attention due to its applicability in tissue engineering and stretchable electronics, its dynamic properties, especially the glass transition temperature (Tg), are yet to be understood at the molecular level. For example, there has been a controversy on the effect of the polymer fiber radius (R) on Tg: Tg decreased with a decrease in R for some polymer fibers, whereas Tg of other polymer fibers was not sensitive to R...
January 18, 2017: Soft Matter
https://www.readbyqxmd.com/read/28098204/strain-specific-fibril-propagation-by-an-a%C3%AE-dodecamer
#6
Dexter N Dean, Pradipta K Das, Pratip Rana, Franklin Burg, Yona Levites, Sarah E Morgan, Preetam Ghosh, Vijayaraghavan Rangachari
Low molecular weight oligomers of amyloid-β (Aβ) have emerged as the primary toxic agents in the etiology of Alzheimer disease (AD). Polymorphism observed within the aggregation end products of fibrils are known to arise due to microstructural differences among the oligomers. Diversity in aggregate morphology correlates with the differences in AD, cementing the idea that conformational strains of oligomers could be significant in phenotypic outcomes. Therefore, it is imperative to determine the ability of strains to faithfully propagate their structure...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28097178/antecedents-of-coping-with-the-disease-in-patients-with-multiple-sclerosis-a-qualitative-content-analysis
#7
Ali Dehghani, Nahid Dehghan Nayeri, Abbas Ebadi
BACKGROUND: Due to many physical and mental disorders that occur in multiple sclerosis patients, identifying the factors affecting coping based on the experiences of patients using qualitative study is essential to improve their quality of life. This study was conducted to explore the antecedents of coping with the disease in patients with multiple sclerosis. METHODS: This is a qualitative study conducted on 11 patients with multiple sclerosis in 2015 in Tehran, Iran...
January 2017: International Journal of Community Based Nursing and Midwifery
https://www.readbyqxmd.com/read/28097177/spirituality-a-panacea-for-patients-coping-with-heart-failure
#8
Parvin Mangolian Shahrbabaki, Esmat Nouhi, Majid Kazemi, Fazlollah Ahmadi
BACKGROUND: Many patients with heart failure grapple with related problems that threaten their feeling of well-being and quality of life. Patients look for ways to cope with the new situation. The present study aimed to explore religious coping from the perspective of patients with heart failure. METHODS: This qualitative study used the content analysis of the semi-structured interviews. The data were collected from 18 participants referring to training hospitals in Kerman University of Medical Sciences in southeastern Iran...
January 2017: International Journal of Community Based Nursing and Midwifery
https://www.readbyqxmd.com/read/28095973/impact-of-obstructive-sleep-apnea-and-its-treatments-on-partners-a-literature-review
#9
Faith S Luyster
STUDY OBJECTIVES: Many adults sleep with a significant other; thus, sleep disorder symptoms and treatments of one partner are likely to impact the other partner's health. A literature review was conducted to examine the impact of obstructive sleep apnea (OSA) and OSA treatments on partner-assessed sleep and daytime functioning and partner involvement in OSA treatment. METHODS: MEDLINE, EMBASE, and CINAHL searches yielded 38 pertinent quantitative and qualitative studies that described sleep and/or daytime functioning assessed in partners of patients with untreated OSA, sleep and/or daytime functioning assessed in partners who were referred for OSA treatment, including continuous positive airway pressure (CPAP) therapy, oral appliance (OA), or surgery, and/or associations between partner involvement and OSA treatment use...
January 11, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/28095613/xenopus-egg-extract-to-study-regulation-of-genome-wide-and-locus-specific-dna-replication
#10
REVIEW
Erica Raspelli, Lucia Falbo, Vincenzo Costanzo
Faithful DNA replication, coupled with accurate repair of DNA damage, is essential to maintain genome stability and relies on different DNA metabolism genes. Many of these genes are involved in the assembly of replication origins, in the coordination of DNA repair to protect replication forks progression in the presence of DNA damage and in the replication of repetitive chromatin regions. Some DNA metabolism genes are essential in higher eukaryotes, suggesting the existence of specialized mechanisms of repair and replication in organisms with complex genomes...
January 17, 2017: Genesis: the Journal of Genetics and Development
https://www.readbyqxmd.com/read/28095316/rewiring-protein-synthesis-from-natural-to-synthetic-amino-acids
#11
REVIEW
Yongqiang Fan, Christopher R Evans, Jiqiang Ling
BACKGROUND: The protein synthesis machinery uses 22 natural amino acids as building blocks that faithfully decode the genetic information. Such fidelity is controlled at multiple steps and can be compromised in nature and in the laboratory to rewire protein synthesis with natural and synthetic amino acids. SCOPE OF REVIEW: This review summarizes the major quality control mechanisms during protein synthesis, including aminoacyl-tRNA synthetases, elongation factors, and the ribosome...
January 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28095123/seafood-consumption-habits-of-south-carolina-shrimp-baiters
#12
Deborah Laska, Grace Vahey, Trevor Faith, John Vena, Edith M Williams
Shrimp baiting is a fishing technique used by many South Carolinians and has been regulated in the state since the late 1980s. A postcard survey was developed and included with 400 South Carolina Department of Natural Resources (SCDNR) annual surveys of registered shrimp baiters over a two-year period. The survey contained questions concerning frequency, portion size, baiting locations, and preparation techniques for shrimp as well as other species consumed and demographic information. An overall response rate of 37% was received...
January 17, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28094764/neuromorphic-meets-neuromechanics-part-ii-the-role-of-fusimotor-drive
#13
Kian Jalaleddini, Chuanxin Niu, Suraj Chakravarthi Raja, Won Joon Sohn, Gerald Loeb, Terence Sanger, Francisco Valero-Cuevas
OBJECTIVE: We studied the fundamentals of muscle afferentation by building a neuro-mechano-morphic system actuating a cadaveric finger. This system is a faithful implementation of the stretch reflex circuitry. It allowed the systematic exploration of the effects of different fusimotor drives to the muscle spindle on the closed-loop stretch reflex response. APPROACH: As in Part I of this work, sensory neurons conveyed proprioceptive information from muscle spindles (with static and dynamic fusimotor drive) to populations of ��-motor neurons (with recruitment and rate coding properties)...
January 17, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28093967/anchored-lentiviral-vector-episomes-for-stem-cell-gene-therapy-in-fanconi-anemia
#14
Santhosh Chakkaramakkil Verghese, Peter Kurre
Fanconi anemia (FA) is an autosomal recessive¬, multisystem DNA repair disorder with prominent defects in hematopoietic stem cell maintenance that result in their progressive attrition and failure in early school age. Allogeneic stem cell transplantation has proved curative for patients with suitable donors. This, along with the characteristic survival advantage of phenotypically normal over non-corrected FA stem cells underscores the compelling rationale for stem cell gene therapy in FA. While integrating lentiviral vectors (LV) have become the preferred platform for genetic correction in several hematologic and immunodeficiency disorders, the residual oncogenic potential by these vectors raises concerns in FA stem cells with potentially preexisting genetic lesions...
January 13, 2017: Current Gene Therapy
https://www.readbyqxmd.com/read/28093885/claims-to-the-benefits-of-clinical-supervision-a-critique-of-the-policy-development-process-and-outcomes-in-new-south-wales-australia
#15
Edward White
The historical development of clinical supervision has been variously interpreted in the international literature. Creditable evidence has accumulated, particularly over the past two decades, to show that clinical supervision has a positive demonstrable effect on supervisees. However, comparatively little research evidence has entered the public domain on any effect that clinical supervision might have on other nominated outcomes. In Australia, developments in clinical supervision were recently prompted by initiatives at national and state levels...
February 2017: International Journal of Mental Health Nursing
https://www.readbyqxmd.com/read/28090336/medical-feminism-working-mothers-and-the-limits-of-home-finding-a-balance-between-self-care-and-other-care-in-cross-cultural-debates-about-health-and-lifestyle-1952-1956
#16
Frederick Cooper
Post-war medical debates about the psychiatric consequences of married women's economic behaviour witnessed far more divergence and collision between perspectives than has often been acknowledged. Practitioners who approached women primarily as facilitators of family health-as wives and mothers-were mistrustful of the competing demands presented by paid employment. They were faced by a growing spectrum of opinion, however, which represented women as atrophying in the confines of domestic life, and which positioned work as a therapeutic act...
July 12, 2016: Palgrave Communications
https://www.readbyqxmd.com/read/28088499/initial-uncertainty-impacts-statistical-learning-in-sound-sequence-processing
#17
Juanita Todd, Alexander Provost, Lisa Whitson, Daniel Mullens
This paper features two studies confirming a lasting impact of first learning on how subsequent experience is weighted in early relevance-filtering processes. In both studies participants were exposed to sequences of sound that contained a regular pattern on two different timescales. Regular patterning in sound is readily detected by the auditory system and used to form "prediction models" that define the most likely properties of sound to be encountered in a given context. The presence and strength of these prediction models is inferred from changes in automatically elicited components of auditory evoked potentials...
January 11, 2017: Journal of Physiology, Paris
https://www.readbyqxmd.com/read/28087625/faithful-mrna-splicing-depends-on-the-prp19-complex-subunit-faint-sausage-and-is-required-for-tracheal-branching-morphogenesis-in-drosophila
#18
Julia Sauerwald, Charlotte Soneson, Mark D Robinson, Stefan Luschnig
Morphogenesis requires the dynamic regulation of gene expression, including transcription, mRNA maturation and translation. Dysfunction of the general mRNA splicing machinery can cause surprisingly specific cellular phenotypes, but the basis for these effects is not clear. Here we show that the Drosophila faint sausage (fas) locus, implicated in epithelial morphogenesis and previously reported to encode a secreted immunoglobulin domain protein, in fact encodes a subunit of the spliceosome-activating Prp19 complex, which is essential for efficient pre-mRNA splicing...
January 13, 2017: Development
https://www.readbyqxmd.com/read/28087492/multi-antibiotic-resistant-and-putative-virulence-gene-signatures-in-enterococcus-species-isolated-from-pig-farms-environment
#19
Abeni Beshiru, Isoken H Igbinosa, Faith I Omeje, Abraham G Ogofure, Martin M Eyong, Etinosa O Igbinosa
The continuous misuse of antimicrobials in food animals both orally and subcutaneously as therapeutic and prophylactic agents to bacterial infections could be detrimental and contribute to the dissemination of resistant clones in livestock production. The present study was carried out to determine the antibiogram and virulence gene characteristics of Enterococcus species from pig farms. A total of 300 faecal samples were obtained from two pig farms in Benin City between February and July, 2016. Standard culture-based and polymerase chain reaction (PCR) assay were adopted in the detection and characterization of the Enterococcus species...
January 10, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28081120/epidemiology-of-chikungunya-virus-outbreaks-in-guadeloupe-and-martinique-2014-an-observational-study-in-volunteer-blood-donors
#20
Pierre Gallian, Isabelle Leparc-Goffart, Pascale Richard, Françoise Maire, Olivier Flusin, Rachid Djoudi, Jacques Chiaroni, Remi Charrel, Pierre Tiberghien, Xavier de Lamballerie
BACKGROUND: During Dec-2013, a chikungunya virus (CHIKV) outbreak was first detected in the French-West Indies. Subsequently, the virus dispersed to other Caribbean islands, continental America and many islands in the Pacific Ocean. Previous estimates of the attack rate were based on declaration of clinically suspected cases. METHODS/PRINCIPAL FINDINGS: Individual testing for CHIKV RNA of all (n = 16,386) blood donations between Feb-24th 2014 and Jan-31st 2015 identified 0·36% and 0·42% of positives in Guadeloupe and Martinique, respectively...
January 2017: PLoS Neglected Tropical Diseases
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