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https://www.readbyqxmd.com/read/28107403/adaptive-heterosubtypic-immunity-to-low-pathogenic-avian-influenza-viruses-in-experimentally-infected-mallards
#1
Karen M Segovia, David E Stallknecht, Darrell R Kapczynski, Lisa Stabler, Roy D Berghaus, Alinde Fotjik, Neus Latorre-Margalef, Monique S França
Mallards are widely recognized as reservoirs for Influenza A viruses (IAV); however, host factors that might prompt seasonality and trends in subtype diversity of IAV such as adaptive heterosubtypic immunity (HSI) are not well understood. To investigate this, we inoculated mallards with a prevailing H3N8 low pathogenic avian influenza virus (LPAIV) subtype in waterfowl to determine if prior infection with this virus would be protective against heterosubtypic infections with the H4N6, H10N7 and H14N5 LPAIV subtypes after one, two and three months, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28107160/groupthink-how-should-clinicians-respond-to-human-trafficking
#2
William Polk Cheshire
Human trafficking is a pervasive problem that exceeds the capacity of social and organizational resources to restrain and for which guidelines are inadequate to assist medical professionals in responding to the special needs of victims when they present as patients. One obstacle to appropriate disagreement with an inadequate status quo is the lure of group cohesion. "Groupthink" is a social psychological phenomenon in which presumed group consensus prevails despite potentially adverse consequences. In the context of the medical response to human trafficking, groupthink may foster complacency, rationalize acquiescence with inaction on the basis of perceived futility, create an illusion of unanimity, and accommodate negative stereotyping...
January 1, 2017: AMA Journal of Ethics
https://www.readbyqxmd.com/read/28106311/potential-applications-of-non-thermal-plasmas-against-biofilm-associated-microorganisms-in-vitro
#3
REVIEW
Pradeep Puligundla, Chulkyoon Mok
Biofilms as complex microbial communities attached to surfaces are posing several challenges in different sectors, ranging from food and healthcare to desalination and power generation. Biofilms survive in hostile environments due to a distinct physiology and behavior in comparison to their planktonic counterparts. They are ubiquitous, resilient, and difficult to eradicate due to their resistant phenotype. Several chemical-based cleaning and disinfection regimens are conventionally used against biofilm-dwelling microorganisms in vitro...
January 20, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28105755/morphometric-changes-in-polish-konik-mares-after-nearly-a-hundred-years-of-the-breed-s-existence
#4
E Pasicka, K Tarnawski, A Chrószcz, H Geringer de Oedenberg
The study was carried out on 126 mares of the Polish Konik horse breed. Mares were bred under a stable system housing and they came from five leading conservation breeding centres. The mares were divided into three age groups: 3-5 years old, 6-9 years old and over 10 years old. Each animal was characterized using 40 morphometric measurements. Discriminant analysis proved the exterior differences of mares in terms of the analysed metric values. It was concluded that the morphotype of modern Polish Konik mares is statistically significantly influenced by the following traits: neck ventral length, forearm circumference, distance between the vascular notch (incisura vasorum facialium) and the oral angle (angulus oris), distance between the margo coronalis ungulae and the margo solearis ungulae of the thoracic limb, thorax circumference and pelvis width...
January 20, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28104282/-incidence-of-bacteria-from-cultures-of-bile-and-gallbladder-wall-of-laparoscopic-cholecystectomy-patients-in-the-university-hospital-dr-jos%C3%A3-eleuterio-gonz%C3%A3-lez
#5
Rubén Cueto-Ramos, Marco Hernández-Guedea, Edelmiro Pérez-Rodríguez, Francisco Reyna-Sepúlveda, Gerardo Muñoz-Maldonado
BACKGROUND: Through experience it has been accepted that bile in normal conditions remains sterile. Bactibilia is a common finding in individuals at high risk or with complicated cholecystolithiasis, however few data prevails about the prevalence of bactibilia in patients operated on for uncomplicated laparoscopic cholecystectomy. There is s common usage of preoperative and postoperative antibiotics in the different patients without the existence of any actual bacteriologic and epidemiologic evidence...
January 16, 2017: Cirugia y Cirujanos
https://www.readbyqxmd.com/read/28103055/the-discovery-and-development-of-the-crispr-system-in-applications-in-genome-manipulation
#6
Veronica Lau, James R Davie
The clustered regularly interspaced short palindromic repeat (CRISPR) associated 9 (Cas9) system is a microbial adaptive immune system that has been recently developed for genomic engineering. From the moment the CRISPR system was discovered in Escherichia coli, the drive to understand the mechanism prevailed, leading to rapid advancement in the knowledge and applications of the CRISPR system. With the ability to characterize and understand the function of the Cas9 endonuclease came the ability to adapt the CRISPR-Cas9 system for use in a variety of applications and disciplines ranging from agriculture to biomedicine...
October 28, 2016: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28102421/the-nature-of-the-light-absorption-and-emission-transitions-of-4-hydroxybenzophenone-in-different-solvents-a-combined-computational-and-experimental-study
#7
Francesco Barsotti, Giovanni Ghigo, Silvia Berto, Davide Vione
The photophysics and photochemistry of 4-hydroxybenzophenone (4HOBP) are interesting because they can give some insight into the behavior of humic material. Here we show that 4HOBP has a number of fluorescence peaks: (i) an intense one at excitation/emission wavelengths Ex/Em ∼ 200-230/280-370 nm, likely due to an excitation transition from S0 to S5 or S6, followed by S2 → S0 in emission (Sn denotes the singlet states of 4HOBP); (ii) a minor peak at Ex/Em ∼ 270-300/320-360 nm (S0 → S2 in absorption and S2 → S0 in emission), and (iii) very interesting signals in the typical emission region of humic substances, most notably at Ex/Em ∼ 200-220/400-500 nm and Ex/Em ∼ 260-280/400-470 nm (in both cases the emission corresponded to an S1 → S0 transition)...
January 19, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/28101727/reliable-prediction-of-adsorption-isotherms-via-genetic-algorithm-molecular-simulation
#8
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/28101635/trait-assembly-in-grasslands-depends-on-habitat-history-and-spatial-scale
#9
Liina Saar, Francesco de Bello, Meelis Pärtel, Aveliina Helm
During the past century, grasslands in Europe have undergone marked changes in land-use, leading to a decline in plant diversity both at local and regional scales, thus possibly also affecting the mechanisms of species sorting into local communities. We studied plant species assembly in grasslands with differing habitat history and hypothesised that trait divergence prevails in historical grasslands due to niche differentiation and trait convergence prevails in more dynamic grasslands due to competitive exclusion and dispersal limitation...
January 19, 2017: Oecologia
https://www.readbyqxmd.com/read/28099875/sustained-attention-and-heart-rate-variability-in-children-and-adolescents-with-adhd
#10
Kristi R Griffiths, Daniel S Quintana, Daniel F Hermens, Chris Spooner, Tracey W Tsang, Simon Clarke, Michael R Kohn
The autonomic nervous system (ANS) plays an important role in attention and self-regulation by modulating physiological arousal to meet environmental demands. Core symptoms of ADHD such as inattention and behavioral disinhibition may be related to dysregulation of the ANS, however previous findings have been equivocal. We examined autonomic activity and reactivity by assessing heart rate variability (HRV) in a large sample of un-medicated children and adolescents (6-19 years) with ADHD (n=229) compared to typically-developing controls (n=244) during rest and sustained attention...
January 15, 2017: Biological Psychology
https://www.readbyqxmd.com/read/28099714/zika-virus-infection-in-brazil-and-human-rights-obligations
#11
Debora Diniz, Sinara Gumieri, Beatriz Galli Bevilacqua, Rebecca J Cook, Bernard M Dickens
The February 2016 WHO declaration that congenital Zika virus syndrome constitutes a Public Health Emergency of International Concern reacted to the outbreak of the syndrome in Brazil. Public health emergencies can justify a spectrum of human rights responses, but in Brazil, the emergency exposed prevailing inequities in the national healthcare system. The government's urging to contain the syndrome, which is associated with microcephaly among newborns, is confounded by lack of reproductive health services. Women with low incomes in particular have little access to such health services...
January 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28098297/spontaneous-assembly-of-a-hybrid-crystal-liquid-phase-in-inverse-patchy-colloid-systems
#12
Silvano Ferrari, Emanuela Bianchi, Gerhard Kahl
Materials with well-defined architectures are heavily sought after in view of their diverse technological applications. Among the desired target architectures, lamellar phases stand out for their exceptional mechanical and optical features. Here we show that charged colloids, decorated on their poles with two oppositely charged regions possess the unusual ability to spontaneously assemble in different morphologies of (semi-)ordered, layered particle arrangements which maintain their structural stability over a surprisingly large temperature range...
January 18, 2017: Nanoscale
https://www.readbyqxmd.com/read/28098174/novel-g9-rotavirus-strains-co-circulate-in-children-and-pigs-taiwan
#13
Fang-Tzy Wu, Krisztián Bányai, Baoming Jiang, Luke Tzu-Chi Liu, Szilvia Marton, Yhu-Chering Huang, Li-Min Huang, Ming-Hui Liao, Chao A Hsiung
Molecular epidemiologic studies collecting information of the spatiotemporal distribution of rotavirus VP7 (G) and VP4 (P) genotypes have shown evidence for the increasing global importance of genotype G9 rotaviruses in humans and pigs. Sequence comparison of the VP7 gene of G9 strains identified different lineages to prevail in the respective host species although some of these lineages appear to be shared among heterologous hosts providing evidence of interspecies transmission events. The majority of these events indicates the pig-to-human spillover, although a reverse route of transmission cannot be excluded either...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28097313/association-of-weekend-warrior-and-other-leisure-time-physical-activity-patterns-with-risks-for-all-cause-cardiovascular-disease-and-cancer-mortality
#14
Gary O'Donovan, I-Min Lee, Mark Hamer, Emmanuel Stamatakis
Importance: More research is required to clarify the association between physical activity and health in "weekend warriors" who perform all their exercise in 1 or 2 sessions per week. Objective: To investigate associations between the weekend warrior and other physical activity patterns and the risks for all-cause, cardiovascular disease (CVD), and cancer mortality. Design, Setting, and Participants: This pooled analysis of household-based surveillance studies included 11 cohorts of respondents to the Health Survey for England and Scottish Health Survey with prospective linkage to mortality records...
January 9, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/28096331/one-step-design-of-a-stable-variant-of-the-malaria-invasion-protein-rh5-for-use-as-a-vaccine-immunogen
#15
Ivan Campeotto, Adi Goldenzweig, Jack Davey, Lea Barfod, Jennifer M Marshall, Sarah E Silk, Katherine E Wright, Simon J Draper, Matthew K Higgins, Sarel J Fleishman
Many promising vaccine candidates from pathogenic viruses, bacteria, and parasites are unstable and cannot be produced cheaply for clinical use. For instance, Plasmodium falciparum reticulocyte-binding protein homolog 5 (PfRH5) is essential for erythrocyte invasion, is highly conserved among field isolates, and elicits antibodies that neutralize in vitro and protect in an animal model, making it a leading malaria vaccine candidate. However, functional RH5 is only expressible in eukaryotic systems and exhibits moderate temperature tolerance, limiting its usefulness in hot and low-income countries where malaria prevails...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28094946/competing-e2-and-sn2-mechanisms-for-the-f-ch3ch2i-reaction
#16
Li Yang, Jiaxu Zhang, Jing Xie, Xinyou Ma, Linyao Zhang, Chenyang Zhao, William Louis Hase
Anti-, syn-E2 and inv-, ret-SN2 reaction channels for the gas-phase reaction of F- + CH3CH2I were characterized with a variety of electronic structure calculations. A geometrical analysis confirmed the synchronous E2-type transition states for the elimination of current reaction, instead of nonconcerted processes through E1cb-like and E1-like mechanisms. Importantly, the controversy concerning reactant complex for anti-E2 and inv-SN2 paths have been clarified in the present work. A positive barrier of + 19...
January 17, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28093690/knowledge-attitudes-and-perceptions-about-routine-childhood-vaccinations-among-jewish-ultra-orthodox-mothers-residing-in-communities-with-low-vaccination-coverage-in-the-jerusalem-district
#17
Chen Stein Zamir, Avi Israeli
Background and aims Childhood vaccinations are an important component of primary prevention. Maternal and Child Health (MCH) clinics in Israel provide routine vaccinations without charge. Several vaccine-preventable-diseases outbreaks (measles, mumps) emerged in Jerusalem in the past decade. We aimed to study attitudes and knowledge on vaccinations among mothers, in communities with low immunization coverage. Methods A qualitative study including focus groups and semi-structured interviews. Results Low immunization coverage was defined below the district's mean (age 2 years, 2013) for measles-mumps-rubella-varicella 1st dose (MMR1\MMRV1) and diphtheria-tetanus-pertussis 4th dose (DTaP4), 96 and 89%, respectively...
January 16, 2017: Maternal and Child Health Journal
https://www.readbyqxmd.com/read/28093471/interactions-studies-between-periplasmic-cytochromes-provide-insights-on-extracellular-electron-transfer-pathways-of-geobacter-sulfurreducens
#18
Ana P Fernandes, Tiago C Nunes, Catarina M Paquete, Carlos A Salgueiro
Geobacter bacteria usually prevail among other microorganisms in soils and sediments where Fe(III) reduction has a central role. This reduction is achieved by extracellular electron transfer, where the electrons are exported from the interior of the cell to the surrounding environment. Periplasmic cytochromes play an important role in establishing an interface between inner and outer membrane electron transfer components. In addition, periplasmic cytochromes, in particular nanowire cytochromes that contain at least 12 haem groups, have been proposed to play a role in electron storage in conditions of environmental lack of electron acceptors...
January 16, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28093460/a-double-edged-sword-does-highly-active-antiretroviral-therapy-contribute-to-syphilis-incidence-by-impairing-immunity-to-treponema-pallidum
#19
REVIEW
Michael L Rekart, Wilfred Ndifon, Robert C Brunham, Jonathan Dushoff, Sang Woo Park, Sanjana Rawat, Caroline E Cameron
BACKGROUND AND HYPOTHESIS: Recently, the world has experienced a rapidly escalating outbreak of infectious syphilis primarily affecting men who have sex with men (MSM); many are taking highly active antiretroviral therapy (HAART) for HIV-1 infection. The prevailing hypothesis is that HAART availability and effectiveness have led to the perception among both individuals who are HIV-1 infected and those who are uninfected that HIV-1 transmission has become much less likely, and the effects of HIV-1 infection less deadly...
January 16, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28092222/varied-presentations-of-leptospirosis-experience-from-a-tertiary-care-hospital-in-north-india
#20
Rama Chaudhry, Karnika Saigal, Tej Bahadur, Kamla Kant, Bishwanath Chourasia, Nitin Gupta
Leptospirosis has been recognised as an emerging global public health problem. The aim of our study was to explore the epidemiological and clinical pattern of disease occurrence in suspected cases and to search for any existing co-infections. Ours was a retrospective study in patients with acute febrile illness in north India over a period of three years (April 2011 to June 2014). Serological diagnosis of leptospirosis was made using the PanBio IgM ELISA kit. Using modified Faine's criteria, presumptive and possible diagnosis was made in 57% and 34% cases, respectively...
January 1, 2017: Tropical Doctor
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