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https://www.readbyqxmd.com/read/29351669/how-pairwise-coevolutionary-models-capture-the-collective-residue-variability-in-proteins
#1
Matteo Figliuzzi, Pierre Barrat-Charlaix, Martin Weigt
Global coevolutionary models of homologous protein families, as constructed by direct coupling analysis (DCA), have recently gained popularity in particular due to their capacity to accurately predict residueresidue contacts from sequence information alone, and thereby to facilitate tertiary and quaternary protein structure prediction. More recently, they have also been used to predict fitness effects of aminoacid substitutions in proteins, and to predict evolutionary conserved protein-protein interactions...
January 17, 2018: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/29351666/intraoperative-identification-and-preservation-of-verbal-memory-in-diffuse-gliomas-a-matched-pair-cohort-study
#2
Juan Martino, Elsa Gomez, Enrique Marco de Lucas, David Mato, Javier Vázquez-Bourgon
BACKGROUND: Recent glioma surgery series with intraoperative electrical stimulation (IES) language mapping have demonstrated high rates of postoperative memory impairment, raising a question regarding the efficacy of this approach to preserve memory. OBJECTIVE: To evaluate if intraoperative identification and preservation of verbal memory sites with IES mapping in diffuse gliomas in eloquent areas consistently protect patients from long-term postoperative decline in short-term memory...
January 17, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29351662/the-versatile-tanycyte-a-hypothalamic-integrator-of-reproduction-and-energy-metabolism
#3
Vincent Prevot, Bénédicte Dehouck, Ariane Sharif, Philippe Ciofi, Paolo Giacobini, Jerome Clasadonte
The fertility and survival of an individual rely on the ability of the periphery to promptly, effectively and reproducibly communicate with brain neural networks that control reproduction, food intake and energy homeostasis. Tanycytes, a specialized glial cell type lining the wall of the third ventricle in the median eminence of the hypothalamus, appear to act as the linchpin of these processes by dynamically controlling the secretion of neuropeptides into the portal vasculature by hypothalamic neurons and regulating blood-brain and blood-cerebrospinal fluid exchanges, both processes that depend on the ability of these cells to adapt their morphology to the physiological state of the individual...
January 17, 2018: Endocrine Reviews
https://www.readbyqxmd.com/read/29351633/evolutionary-genetics-of-cytoplasmic-incompatibility-genes-cifa-and-cifb-in-prophage-wo-of-wolbachia
#4
Amelia R I Lindsey, Danny W Rice, Sarah R Bordenstein, Andrew W Brooks, Seth R Bordenstein, Irene L G Newton
The bacterial endosymbiont Wolbachia manipulates arthropod reproduction to facilitate its maternal spread through host populations. The most common manipulation is cytoplasmic incompatibility (CI): Wolbachia-infected males produce modified sperm that cause embryonic mortality, unless rescued by embryos harboring the same Wolbachia. The genes underlying CI, cifA and cifB, were recently identified in the eukaryotic association module of Wolbachia's prophage WO. Here, we use transcriptomic and genomic approaches to address three important evolutionary facets of the cif genes...
January 17, 2018: Genome Biology and Evolution
https://www.readbyqxmd.com/read/29351615/18f-fluorodeoxyglucose-positron-emission-computed-tomography-and-computed-tomography-angiography-in-prosthetic-heart-valve-endocarditis-from-guidelines-to-clinical-practice
#5
Laurens E Swart, Asbjørn M Scholtens, Wilco Tanis, Koen Nieman, Ad J J C Bogers, Fred J Verzijlbergen, Gabriel P Krestin, Jolien W Roos-Hesselink, Ricardo P J Budde
The timely diagnosis of prosthetic heart valve endocarditis remains challenging yet of utmost importance. 18F-fluorodeoxyglucose (18 F-FDG) positron emission/computed tomography (PET/CT) and cardiac computed tomography angiography (CTA) were recently introduced as additional diagnostic tools in the most recent ESC guidelines on infective endocarditis. However, how to interpret PET/CT findings with regard to what is to be considered abnormal, what the potential confounders may be, as well as which patients benefit most from these additional imaging techniques and how to best perform them in these often-complex patients, remains unclear...
January 16, 2018: European Heart Journal
https://www.readbyqxmd.com/read/29351594/sero-efficacy-of-vi-polysaccharide-tetanus-toxoid-typhoid-conjugate-vaccine-typbar-tcv
#6
Merryn Voysey, Andrew J Pollard
Background: Salmonella Typhi is the major cause of enteric fever in lower income countries. New conjugate vaccines show promise as public health interventions, however there are no efficacy data available from endemic areas. Methods: Data were obtained from a previously published phase 3 randomised controlled trial comparing Vi-polysaccharide tetanus-toxoid conjugate vaccine (Typbar-TCV; Bharat Biotech Intl Ltd, India): (Vi-TT) with Vi-polysaccharide (Typbar; Bharat Biotech Intl Ltd, India): (Vi-PS) in participants aged 2- 45 years...
January 17, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29351583/travelers-diarrhea-in-thailand-a-quantitative-analysis-using-taqman%C3%A2-array-card
#7
Paphavee Lertsethtakarn-Ketwalha, Sasikorn Silapong, Pimmada Sakpaisal, Oralak Serichantalergs, Nattaya Ruamsap, Woradee Lurchachaiwong, Sinn Anuras, James A Platts-Mills, Jie Liu, Eric R Houpt, Ladaporn Bodhidatta, Brett E Swierczewski, Carl J Mason
Background: Travelers' diarrhea (TD) is a common illness experienced by travelers from developed countries visiting developing countries. Recent questionnaire-based surveillance studies reported that approximately 6-16% of travelers experienced TD while visiting Thailand; however, a majority of TD information was limited mainly to US military populations. Methods: A TD surveillance study was conducted at Bumrungrad International Hospital in 2012-2014 in Bangkok, Thailand...
January 17, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29351570/joint-adolescent-adult-early-phase-clinical-trials-to-improve-access-to-new-drugs-for-adolescents-with-cancer-proposals-from-the-multi-stakeholder-platform-accelerate
#8
N Gaspar, L V Marshall, D Binner, R Herold, R Rousseau, P Blanc, R Capdeville, J Carleer, C Copland, Y Kerloeguen, K Norga, L Pacaud, M-A Sevaux, C Spadoni, J Sterba, F Ligas, T Taube, M Uttenreuther-Fischer, S Chioato, M A O'Connell, B Geoerger, J-Y Blay, J C Soria, S Kaye, B Wulff, L Brugières, G Vassal, A D J Pearson
The impressive progress recently observed in adult cancers through the introduction of new drugs has not yet been translated to adolescents between 12 and 17 years of age. Currently adolescents are grouped with children, so their access to new, effective drugs already available for adults is delayed because paediatric drug development starts late relative to adult programmes. Moreover, specific early phase trials designed exclusively for adolescents in rare diseases recruit poorly, even if conducted internationally...
January 16, 2018: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29351566/patterns-in-reef-fish-assemblages-insights-from-the-chagos-archipelago
#9
Melita Samoilys, Ronan Roche, Heather Koldewey, John Turner
Understanding the drivers of variability in the composition of fish assemblages across the Indo-Pacific region is crucial to support coral reef ecosystem resilience. Whilst numerous relationships and feedback mechanisms between the functional roles of coral reef fishes and reef benthic composition have been investigated, certain key groups, such as the herbivores, are widely suggested to maintain reefs in a coral-dominated state. Examining links between fishes and reef benthos is complicated by the interactions between natural processes, disturbance events and anthropogenic impacts, particularly fishing pressure...
2018: PloS One
https://www.readbyqxmd.com/read/29351553/hierarchical-and-hybrid-energy-storage-devices-in-data-centers-architecture-control-and-provisioning
#10
Mengshu Sun, Yuankun Xue, Paul Bogdan, Jian Tang, Yanzhi Wang, Xue Lin
Recently, a new approach has been introduced that leverages and over-provisions energy storage devices (ESDs) in data centers for performing power capping and facilitating capex/opex reductions, without performance overhead. To fully realize the potential benefits of the hierarchical ESD structure, we propose a comprehensive design, control, and provisioning framework including (i) designing power delivery architecture supporting hierarchical ESD structure and hybrid ESDs for some levels, as well as (ii) control and provisioning of the hierarchical ESD structure including run-time ESD charging/discharging control and design-time determination of ESD types, homogeneous/hybrid options, ESD provisioning at each level...
2018: PloS One
https://www.readbyqxmd.com/read/29351505/helping-mediating-and-gaining-recognition-the-everyday-identity-work-of-romanian-health-social-workers
#11
Alexandra Ciocănel, Florin Lazăr, Shari Munch, Cara Harmon, Georgiana-Cristina Rentea, Daniela Gaba, Anca Mihai
Health social work is a field with challenges, opportunities, and ways of professing social work that may vary between different national contexts. In this article, we look at how Romanian health social workers construct their professional identity through their everyday identity work. Drawing on a qualitative study based on interviews with 21 health social workers working in various organizational contexts, we analyze what health social workers say they do and how this shapes their self-conception as professionals...
January 19, 2018: Social Work in Health Care
https://www.readbyqxmd.com/read/29351498/high-power-diode-laser-on-management-of-drug-induced-gingival-overgrowth-report-of-two-cases-and-long-term-follow-up
#12
Luana Campos, Marina Gallottini, Débora Pallos, Alyne Simões, Fabiana Martins
BACKGROUND: Drug-induced gingival overgrowth (DIGO) is attributed mainly to the prolonged use of calcium channel blocking agents, anticonvulsants, and anti-calcineurin inhibitors . The management of DIGO depends on the severity of the disease and includes surgical intervention and plaque control. Compared to conventional surgical treatment, the recent literature data have shown that gingivectomy using a high-power laser (HPL) is a short and easy procedure, which results in minimal postoperative discomfort and greater patient accep- tance...
January 19, 2018: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/29351470/increased-pro-renin-receptor-expression-in-subfornical-organ-neurons-in-hypertensive-humans
#13
Silvana G Cooper, Darshan P Trivedi, Rieko Yamamoto, Caleb J Worker, Cheng-Yuan Feng, Jacob T Sorensen, Wei Yang, Zhenggang Xiong, Yumei Feng
The central nervous system plays an important role in essential hypertension in humans and in animal models of hypertension through modulation of sympathetic activity, and sodium and body fluid homeostasis. Data from animal models of hypertension suggest that the renin-angiotensin system in the subfornical organ (SFO) of the brain is critical for hypertension development. We recently reported that the brain (pro)renin receptor (PRR) is a novel component of the brain renin-angiotensin system and could be a key initiator of the pathogenesis of hypertension...
December 22, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351469/inhibition-of-mtor-protects-the-blood-brain-barrier-in-models-of-alzheimer-s-disease-and-vascular-cognitive-impairment
#14
Candice E Van Skike, Jordan B Jahrling, Angela B Olson, Naomi L Sayre, Stacy A Hussong, Zoltan I Ungvari, James D Lechleiter, Veronica Galvan
An intact blood-brain barrier (BBB) limits entry of pro-inflammatory and neurotoxic blood-derived factors into the brain parenchyma. The BBB is damaged in Alzheimer's disease (AD), which contributes significantly to the progression of AD pathologies and cognitive decline. However, the mechanisms underlying BBB breakdown in AD remain elusive and no interventions are available for treatment or prevention. We and others recently established that inhibition of the mammalian/mechanistic target of rapamycin (mTOR) pathway with rapamycin yields significant neuroprotective effects, improving cerebrovascular and cognitive function in mouse models of AD...
December 22, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351465/emerging-potential-benefits-of-modulating-nad-metabolism-in-cardiovascular-disease
#15
Daniel S Matasic, Charles Brenner, Barry London
Nicotinamide adenine dinucleotide (NAD+) and related metabolites are central mediators of fuel oxidation and bioenergetics within cardiomyocytes. Additionally, NAD+ is required for the activity of multifunctional enzymes including sirtuins and poly(ADP-ribose) polymerases (PARPs) that regulate post-translational modifications, DNA damage responses, and calcium signaling. Recent research indicates that NAD+ participates in a multitude of processes dysregulated in cardiovascular diseases. Therefore, supplementation of NAD+ precursors including nicotinamide riboside (NR) that boost or replete the NAD+ metabolome may be cardioprotective...
December 22, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351464/vitamin-d-and-regulation-of-vascular-cell-function
#16
Nasim Jamali, Christine M Sorenson, Nader Sheibani
Vitamin D deficiency is linked to pathogenesis of many diseases including cardiovascular, cancer, and various eye diseases. In recent years, important roles for vitamin D in regulation of immune function, inflammation, angiogenesis, and aging have been demonstrated. Thus, vitamin D and its analogs have been evaluated for treatment of various types of cancer and chronic diseases. We previously showed that the active form of vitamin D (1, 25(OH)2D3) is a potent inhibitor of angiogenesis. This activity is consistent with the important role proposed for vitamin D and its analogs in the mitigation of tumor growth through inhibition of angiogenesis...
December 22, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351452/the-role-of-intracellular-angiotensin-ii
#17
Richard N Re
It has become clear that the vasoactive peptide angiotensin II, like other so-called intracrines, can act in the intracellular space. Evidence has accumulated indicating that such angiotensin II activity can be upregulated in disease states and cause pathology. Indeed, other intracrines appear to be involved in disease pathogenesis as well. At the same time nitric oxide, potentially a cell protective factor, has been shown to be upregulated by intracellular angiotensin II. Recently data has been developed indicating that other potentially protective factors are directly upregulated at neuronal nuclei by angiotensin II...
January 12, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351449/personalized-medicine-in-cf-from-modulator-development-to-therapy-for-cystic-fibrosis-patients-with-rare-cftr-mutations
#18
Misak Harutyunyan, Yunjie Huang, Kyu-Shik Mun, Fanmuyi Yang, Kavisha Arora, Anjaparavanda P Naren
Cystic fibrosis (CF) is the most common life-shortening genetic disease affecting approximately 1 in 3500 of the Caucasian population. CF is caused by mutations in the CF transmembrane conductance regulator (CFTR) gene. To date, over 2000 CFTR mutations have been identified and produce a wide range of phenotypes. The CFTR protein, a chloride channel, is normally expressed on epithelial cells lining the lung, gut, and exocrine glands. Mutations in CFTR have led to pleiotropic effects in CF patients and have resulted in early morbidity and mortality...
December 14, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29351446/mechanisms-and-consequences-of-oxidative-stress-in-lung-disease-therapeutic-implications-for-an-aging-populace
#19
Louise Hecker
The rapid expansion of the elderly population has led to the recent epidemic of age-related diseases, including increased incidence and mortality of chronic and acute lung diseases. Numerous studies have implicated aging and oxidative stress in the pathogenesis of various pulmonary diseases; however, despite recent advances in these fields, the specific contributions of aging and oxidative stress remain elusive. This review will discuss the consequences of aging on lung morphology and physiology, and how redox imbalance with aging contributes to lung disease susceptibility...
December 14, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29351444/activated-human-t-lymphocytes-inhibit-tgf%C3%AE-induced-fibroblast-to-myofibroblast-differentiation-via-prostaglandins-d2-and-e2
#20
Shannon H Lacy, Amali P Epa, Stephen J Pollock, Collynn F Woeller, Thomas H Thatcher, Richard P Phipps, Patricia J Sime
In pulmonary fibrosis (PF), fibroblasts and myofibroblasts proliferate and deposit excessive extracellular matrix in the interstitium, impairing normal lung function. As most forms of PF have a poor prognosis and limited treatment options, PF represents an urgent unmet need for novel, effective therapeutics. While the role of immune cells in lung fibrosis is unclear, recent studies suggest that T lymphocyte (T cell) activation may be impaired in PF patients. Further, we have previously shown that activated T cells can produce prostaglandins with anti-scarring potential...
December 20, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
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