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https://www.readbyqxmd.com/read/29792805/a-cheminformatic-insight-into-the-differences-between-terrestrial-and-marine-originated-natural-products
#1
Jun Shang, Ben Hu, Junmei Wang, Feng Zhu, Yu Kang, Dan Li, Huiyong Sun, De-Xin Kong, Tingjun Hou
This is a new golden age for the drug discovery based on natural products derived from both marine and terrestrial sources. Herein, a straightforward but important question is what are the major structural differences between marine natural products (MNPs) and terrestrial natural products (TNPs). To answer this question, we analyzed the important physicochemical properties, structural features and drug-likeness of the two types of natural products and discussed their differences from the perceptive of evolution...
May 24, 2018: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/29792786/imageless-navigation-total-hip-arthroplasty-an-evaluation-of-operative-time
#2
Epaminondas Markos Valsamis, David Ricketts, Adnan Hussain, Amir-Reza Jenabzadeh
INTRODUCTION: Imageless navigation has been successfully integrated in knee arthroplasty but its effectiveness in total hip arthroplasty (THA) has been debated. It has consistently been shown that navigation adds significant time and cost to the operation. Further, the relative success of traditional hip replacements has impeded the adoption of new techniques. METHODS: We compared the operative time between fifty total hip replacements with and without the use of imageless navigation by a single senior surgeon in a retrospective study...
2018: SICOT-J
https://www.readbyqxmd.com/read/29792771/is-blogging-a-new-form-of-communication-in-palliative-health-care-a-qualitative-research-study
#3
Anneli Ozanne, Ingela Henoch, Susann Strang
AIM: To illuminate experiences of living with life-threatening diseases as described in blogs and the experience of blogging about these matters. METHODS: A secondary analysis of 21 blogs was performed. RESULTS: It was difficult for bloggers to accept what they perceived to be the unacceptable aspects of having an life-threatening disease. They searched for hope and acceptance, and tried to manage their life. They felt strengthened by supportive encounters with health professionals, relatives, friends, and from their blogging...
May 2, 2018: International Journal of Palliative Nursing
https://www.readbyqxmd.com/read/29792672/biosynthesis-of-lincosamide-antibiotics-reactions-associated-with-degradation-and-detoxification-pathways-play-a-constructive-role
#4
Daozhong Zhang, Zhijun Tang, Wen Liu
Natural products typically are small molecules produced by living organisms. These products possess a wide variety of biological activities and thus have historically played a critical role in medicinal chemistry and chemical biology either as chemotherapeutic agents or as useful tools. Natural products are not synthesized for use by human beings; rather, living organisms produce them in response to various biochemical processes and environmental concerns, both internal and external. These processes/concerns are often dynamic and thus motivate the diversification, optimization, and selection of small molecules in line with changes in biological function...
May 24, 2018: Accounts of Chemical Research
https://www.readbyqxmd.com/read/29792456/teamwork-situated-in-multiteam-systems-key-lessons-learned-and-future-opportunities
#5
Marissa L Shuffler, Dorothy R Carter
Many important contexts requiring teamwork, including health care, space exploration, national defense, and scientific discovery, present important challenges that cannot be addressed by a single team working independently. Instead, the complex goals these contexts present often require effectively coordinated efforts of multiple specialized teams working together as a multiteam system (MTS). For almost 2 decades, researchers have endeavored to understand the novelties and nuances for teamwork and collaboration that ensue when teams operate together as "component teams" in these interdependent systems...
May 2018: American Psychologist
https://www.readbyqxmd.com/read/29792329/residual-complexity-does-impact-organic-chemistry-and-drug-discovery-the-case-of-rufomyazine-and-rufomycin
#6
Mary P Choules, Larry L Klein, David C Lankin, James B McAlpine, Sang-Hyun Cho, Jinhua Cheng, Hanki Lee, Joo-Won Suh, Birgit U Jaki, Scott G Franzblau, Guido F Pauli
Residual complexity (RC) involves the impact of subtle but critical structural and biological features on drug lead validation, including unexplained effects related to unidentified impurities. RC commonly plagues drug discovery efforts due to the inherent imperfections of chromatographic separation methods. The new diketopiperazine, rufomyazine (6), and the previously known antibiotic, rufomycin (7), represent a prototypical case of RC that (almost) resulted in the misassignment of biological activity. The case exemplifies that impurities well below the natural abundance of 13 C (1...
May 24, 2018: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29792260/widening-participation-of-m%C3%A4-ori-and-pasifika-students-in-health-careers-evaluation-of-two-health-science-academies
#7
Lesley Middleton, Ausaga Faasalele Tanuvasa, Megan Pledger, Nicola Grace, Kirsten Smiler, Tua Taueetia Loto-Su'a, Jacqueline Cumming
Objective The aim of the present study was to evaluate the short-term outcomes of two health science academies established by a district health board in South Auckland, New Zealand, to create a health workforce pipeline for local Māori and Pasifika students. Methods A mixed-methods approach was used, involving background discussions with key informants to generate an initial logic model of how the academies work, followed by secondary analysis of students' records relating to retention and academic achievement, a survey of senior academy students' interest in particular health careers and face-to-face interviews and focus groups with students, families and teachers...
May 24, 2018: Australian Health Review: a Publication of the Australian Hospital Association
https://www.readbyqxmd.com/read/29792159/on-the-possibility-of-death-of-new-genes-evidence-from-the-deletion-of-de-novo-micrornas
#8
Guang-An Lu, Yixin Zhao, Zhongqi Liufu, Chung-I Wu
BACKGROUND: New genes are constantly formed, sometimes from non-genic sequences, creating what is referred to as de novo genes. Since the total number of genes remains relatively steady, gene deaths likely balance out new births. In metazoan genomes, microRNAs (miRs) genes, small and non-coding, account for the bulk of functional de novo genes and are particularly suited to the investigation of gene death. RESULTS: In this study, we discover a Drosophila-specific de novo miRNA (mir-977) that may be facing impending death...
May 23, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29791754/atp-triggers-a-robust-intracellular-ca-2-mediated-signalling-pathway-in-human-synovial-fibroblasts
#10
Kondo C, R B Clark, T Y Kim, Belke D, Banderali U, R T Szerencsei, A H Jalloul, P P M Schnetkamp, Spitzer Kw, Giles Wr
NEW FINDINGS: What is the central question of this study? In human articular joints, the synovial fibroblast HSF cell population has essential functions including secretion of lubricants. We address some remaining questions concerning activation-secretion coupling by characterizing the main [Ca2+ ]i signalling pathways activated by ATP. What is the main finding and its importance? In HSF ATP acts through a linked G-protein (Gq ) and phospholipase C signalling mechanisms to produce IP-3 which markedly enhances release of Ca2+ from the endoplasmic reticulum...
May 23, 2018: Experimental Physiology
https://www.readbyqxmd.com/read/29791730/integration-of-parenting-and-nutrition-interventions-in-a-community-health-program-in-pakistan-an-implementation-evaluation
#11
Aisha K Yousafzai, Muneera A Rasheed, Saima Siyal
Policy and program implementers require evidence on whether integrated psychosocial stimulation and nutrition interventions can be effectively delivered at-scale, how, and at what cost? To address some of these issues, a comprehensive evaluation of implementation was designed for a trial in Pakistan that integrated psychosocial stimulation and nutrition interventions in a community health service. The first objective was to describe, analyze, and assess the quality and accuracy of the implementation of the interventions...
May 2018: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29791557/new-and-repurposed-drugs-to-treat-multidrug-and-extensively-drug-resistant-tuberculosis
#12
Denise Rossato Silva, Margareth Dalcolmo, Simon Tiberi, Marcos Abdo Arbex, Marcela Munoz-Torrico, Raquel Duarte, Lia D'Ambrosio, Dina Visca, Adrian Rendon, Mina Gaga, Alimuddin Zumla, Giovanni Battista Migliori
Multidrug-resistant and extensively drug-resistant tuberculosis (MDR-TB and XDR-TB, respectively) continue to represent a challenge for clinicians and public health authorities. Unfortunately, although there have been encouraging reports of higher success rates, the overall rate of favorable outcomes of M/XDR-TB treatment is only 54%, or much lower when the spectrum of drug resistance is beyond that of XDR-TB. Treating M/XDR-TB continues to be a difficult task, because of the high incidence of adverse events, the long duration of treatment, the high cost of the regimens used, and the drain on health care resources...
April 2018: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/29791266/building-castles-made-of-pleasure
#13
David Zachary Hafner
To outlive the suicide of one's beloved, an ineffable trauma, entails a complicated grieving process. This paper illustrates the importance of understanding body and self as malleable, invested objects. The treatment of traumatized patients involves redrawing body frontiers, and subsequent reassurance that the body, once delineated and inhabited, won't betray its host. The concepts of objet a and transitional objects help distinguish anxieties related to external loss from anxieties related to the incorporation or reabsorption of an object whose cruel proximity threatens the internal integrity of body experience...
June 2018: Psychoanalytic Review
https://www.readbyqxmd.com/read/29791005/no-one-left-behind-postevent-experiences-of-differently-abled-individuals-in-denmark
#14
Adnan Todorovac, Louise Damsbo Simonsen, Ask Elklit
PURPOSE: This descriptive study explored barriers and difficulties faced by individuals with a physical disability (IPD) in Denmark in situations of disaster and in everyday problems. METHODS: Semistructured interviews were conducted with 12 IPD who had experienced a possible traumatic event. Due to a lack of participants who experienced a traumatic event, the authors expanded their recruitment strategy to include IPD, who had experienced other critical situations (eg, accidents and personal crises)...
March 2018: Journal of Emergency Management: JEM
https://www.readbyqxmd.com/read/29790810/a-review-of-novel-technologies-and-techniques-associated-with-identification-of-bloodstream-infection-aetiologies-and-rapid-antimicrobial-genotypic-and-quantitative-phenotypic-determination
#15
Stephen Poole, Stephen P Kidd, Kordo Saeed
Introduction The antimicrobial aspect of management of patients with blood stream infections (BSI) and sepsis is time critical. In an era of increasing antimicrobial resistance, rapid detection and identification of bacteria with antimicrobial susceptibility is crucial to direct therapy early in the course of illness. Molecular techniques offer a potential solution to this. Areas covered In the present review the authors have discussed a number of novel solutions utilising a variety of molecular techniques for pathogen detection, identification and antimicrobial susceptibility...
May 23, 2018: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/29790240/understanding-mucosal-and-microbial-functionality-of-the-female-reproductive-tract-by-metaproteomics-implications-for-hiv-transmission
#16
Alicia R Berard, Michelle Perner, Sarah Mutch, Christina Farr Zuend, Peter McQueen, Adam D Burgener
The mucosal surface of the female genital tract contains physiological, immunological, and microbial components that collectively comprise a functioning "mucosal system" that is critical for reproductive health. Alterations or imbalances to any of these components can have significant consequences for susceptibility to sexually transmitted infections, such as HIV. In recent years the advent of advanced systems biology technologies, such as metaproteomics, has provided new toolsets to studying mucosal systems...
May 22, 2018: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29789947/relationship-between-brain-function-aeeg-and-brain-structure-mri-and-their-predictive-value-for-neurodevelopmental-outcome-of-preterm-infants
#17
Britta Hüning, Tobias Storbeck, Nora Bruns, Frauke Dransfeld, Julia Hobrecht, Julia Karpienski, Selma Sirin, Bernd Schweiger, Christel Weiss, Ursula Felderhoff-Müser, Hanna Müller
To improve the prediction of neurodevelopmental outcome in very preterm infants, this study used the combination of amplitude-integrated electroencephalography (aEEG) within the first 72 h of life and cranial magnetic resonance imaging (MRI) at term equivalent age. A single-center cohort of 38 infants born before 32 weeks of gestation was subjected to both investigations. Structural measurements were performed on MRI. Multiple regression analysis was used to identify independent factors including functional and structural brain measurements associated with outcome at a corrected age of 24 months...
May 22, 2018: European Journal of Pediatrics
https://www.readbyqxmd.com/read/29789885/instability-of-endosperm-development-in-amphiploids-and-their-parental-species-in-the-genus-avena-l
#18
Paulina Tomaszewska, Romuald Kosina
The development of oat endosperm is modified by chromatin and nuclei elimination, intrusive growth of cell walls, and polyploidisation of cell clones. The last event is correlated with somatic crossing-over. Grass endosperm is a variable tissue in terms of its cytogenetics and development. Free-nuclear syncytium and starchy and aleurone endosperm were the main focus of the research. These were studied in oat amphiploids (4x, 6x, and 8x) and parental species (2x, 4x, and 6x). What the levels of cytogenetic disorders and developmental anomalies in species versus hybrids are, and, what the factors are determining phenotypes of both tissue components, are open questions for oats...
May 22, 2018: Plant Cell Reports
https://www.readbyqxmd.com/read/29789482/the-social-basis-of-vaccine-questioning-and-refusal-a-qualitative-study-employing-bourdieu-s-concepts-of-capitals-and-habitus
#19
Katie Attwell, Samantha B Meyer, Paul R Ward
This article is an in-depth analysis of the social nature of vaccine decision-making. It employs the sociological theory of Bourdieu and Ingram to consider how parents experience non-vaccination as a valued form of capital in specific communities, and how this can affect their decision-making. Drawing on research conducted in two Australian cities, our qualitative analysis of new interview data shows that parents experience disjuncture and tugs towards 'appropriate' forms of vaccination behavior in their social networks, as these link to broader behaviors around food, school choices and birth practices...
May 22, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29789427/impact-of-tobacco-specific-nitrosamine-derived-dna-adducts-on-the-efficiency-and-fidelity-of-dna-replication-in-human-cells
#20
Hua Du, Jiapeng Leng, Pengcheng Wang, Lin Li, Yinsheng Wang
The tobacco-derived nitrosamines 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) and N '-nitrosonornicotine (NNN) are known human carcinogens. Following metabolic activation, NNK and NNN can induce a number of DNA lesions, including several 4-(3-pyridyl)-4-oxobut-1-yl (POB) adducts. However, it remains unclear to what extent these lesions affect the efficiency and accuracy of DNA replication and how their replicative bypass is influenced by translesion synthesis (TLS) DNA polymerases. In this study, we investigated the effects of three stable POB DNA adducts (i...
May 22, 2018: Journal of Biological Chemistry
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