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https://www.readbyqxmd.com/read/29222865/multipoint-pacing-improves-peripheral-hemodynamic-response-non-invasive-assessment-using-radial-artery-tonometry
#1
Giuseppe Ciconte, Žarko Ćalović, Gabriele Vicedomini, Amarild Cuko, Luke C McSpadden, Chunlan Jiang, Kyungmoo Ryu, Igor Caporaso, Robert Stutz, Dean Winter, Massimo Saviano, Raffaele Vitale, Manuel Conti, Vincenzo Santinelli, Carlo Pappone
BACKGOUND: Multipoint left ventricular (LV) pacing (MultiPoint™ Pacing [MPP], Abbott) improves the response rate to cardiac resynchronization therapy (CRT). We evaluated the feasibility of non-invasive radial artery tonometry (RAT) to characterize arterial pressure morphology changes (pre-ejection period [PEP] and ejection duration [ED]) between conventional CRT and MPP pacing interventions. METHODS: Patients with a MPP-enabled CRT device (Quadra Assura MP™, Abbott) underwent non-invasive RAT assessment (SphygmoCor CVMS, AtCor Medical Inc...
December 9, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29220111/phosphoenolpyruvate-transporter-enables-targeted-perturbation-during-metabolic-analysis-of-l-phenylalanine-production-with-escherichia-coli
#2
Julia Tröndle, Christoph Albermann, Michael Weiner, Georg A Sprenger, Dirk Weuster-Botz
Usually perturbation of the metabolism of cells by addition of substrates is applied for metabolic analysis of production organisms, but perturbation studies are restricted to the endogenous substrates of the cells under study. The goal of this study was to overcome this limitation by making phosphoenolpyruvate (PEP) available for perturbation studies with Escherichia coli producing L-phenylalanine. A production strain overexpressing a PEP-transporter variant (UhpT-D388C) was applied in a standardized fed-batch production-process on a 42 L-scale...
December 8, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/29207979/a-propeptide-toolbox-for-secretion-optimization-of-flavobacterium-meningosepticum-endopeptidase-in-lactococcus-lactis
#3
Pei Yu Lim, Lee Ling Tan, Dave Siak-Wei Ow, Fong T Wong
BACKGROUND: Lactic acid bacteria are a family of "generally regarded as safe" organisms traditionally used for food fermentation. In recent years, they have started to emerge as potential chassis for heterologous protein production. And more recently, due to their beneficial properties in the gut, they have been examined as potential candidates for mucosal delivery vectors, especially for acid-sensitive enzymes. One such application would be the delivery of gluten-digesting endopeptidases for the treatment of celiac disease...
December 5, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/29198923/enteromorpha-and-polysaccharides-from-enteromorpha-ameliorate-loperamide-induced-constipation-in-mice
#4
Xinxiu Ren, Lei Liu, Yaser Gamallat, Bingqiang Zhang, Yi Xin
Slow-transit constipation(STC)is a disease characterized by functional gastrointestinal disorder. Common laxatives used in clinical practice against constipation such as Senna have side effects. Enteromorpha(EP)is a common marine alga, and the polysaccharide extracted from EP has been reported possessing anti-cancer and anti-inflammation effects. The aim of this study is to investigate the effects of EP and Polysaccharides from Enteromorpha (PEP) on loperamide induced constipated mice model and illustrating mechanism of action...
November 30, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29197181/investigating-the-strategies-for-microbial-production-of-trehalose-from-lignocellulosic-sugars
#5
Yifei Wu, Jian Wang, Xiaolin Shen, Jia Wang, Zhenya Chen, Xinxiao Sun, Qipeng Yuan, Yajun Yan
Trehalose, a multi-functional and value-added disaccharide, can be efficiently biosynthesized from glucose by using a synergetic carbon utilization mechanism (SynCar) which coupled phosphoenolpyruvate (PEP) generation from the second carbon source with PEP-dependent phosphotransferase system (PTS) to promote non-catabolic use of glucose. Considering glucose and xylose present in large amounts in lignocellulosic sugars, we explored new strategies for conversion of both sugars into trehalose. Herein, we first attempted trehalose production from xylose directly, based on which, synergetic utilization of glucose and xylose prompted by SynCar was implemented in engineered E...
December 2, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29184942/bone-targeting-poly-ethylene-sodium-phosphate
#6
Yasuhiko Iwasaki, Atsushi Yokota, Akihisa Otaka, Naoyuki Inoue, Akane Yamaguchi, Toru Yoshitomi, Keitaro Yoshimoto, Masashi Neo
Poly(ethylene sodium phosphate) (PEP·Na) showed excellent cytocompatibility and in vivo bone affinity. Moreover, PEP·Na did not interact with thrombin, which is a coagulation-related protein. Because immobilization of therapeutic agents and imaging probes on PEP·Na is easily performed, PEP·Na is a promising polymer for bone-targeted therapies.
November 29, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/29184562/de-novo-transcriptome-assembly-and-comparison-of-c3-c3-c4-and-c4-species-of-tribe-salsoleae-chenopodiaceae
#7
Maximilian Lauterbach, Hanno Schmidt, Kumari Billakurthi, Thomas Hankeln, Peter Westhoff, Udo Gowik, Gudrun Kadereit
C4 photosynthesis is a carbon-concentrating mechanism that evolved independently more than 60 times in a wide range of angiosperm lineages. Among other alterations, the evolution of C4 from ancestral C3 photosynthesis requires changes in the expression of a vast number of genes. Differential gene expression analyses between closely related C3 and C4 species have significantly increased our understanding of C4 functioning and evolution. In Chenopodiaceae, a family that is rich in C4 origins and photosynthetic types, the anatomy, physiology and phylogeny of C4, C2, and C3 species of Salsoleae has been studied in great detail, which facilitated the choice of six samples of five representative species with different photosynthetic types for transcriptome comparisons...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29183270/results-from-the-post-exposure-prophylaxis-pilot-program-p-quad-demonstration-project-in-los-angeles-county
#8
Matthew R Beymer, Ryan M Kofron, Chi-Hong Tseng, Robert K Bolan, Risa P Flynn, Jennifer M Sayles, Mario J Perez, Wilbert C Jordan, Raphael J Landovitz
Post-exposure prophylaxis (PEP) is a promising but under-utilized strategy for HIV prevention in high-risk populations. Between March 2010 and June 2011, two community-based clinics in Los Angeles County provided PEP in a pilot program to 267 unique individuals. Courses were primarily dispensed to men who have sex with men (84%) and consisted overwhelmingly of a three-drug antiretroviral therapy regimen containing two nucleoside reverse transcriptase inhibitors and either an integrase inhibitor (raltegravir) or a boosted protease inhibitor (lopinavir/ritonavir)...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/29177005/altered-pre-ejection-period-response-to-social-evaluative-threat-in-adolescents-with-autism-spectrum-disorder
#9
E Kale Edmiston, Rachael A Muscatello, Blythe A Corbett
Introduction: The autonomic nervous system (ANS) is involved in regulating social behavior; Autism Spectrum Disorder (ASD) is characterized by alterations in social behavior and reduced physiological response to threat. We hypothesized that adolescents with ASD would show reduced ANS response to social threat. Methods: Eighteen males with ASD and thirteen males with typical development (TD), ages 12 to 17, completed a social threat paradigm while wearing an impedance cardiography apparatus...
April 2017: Research in Autism Spectrum Disorders
https://www.readbyqxmd.com/read/29174349/a-meta-analysis-of-hiv-postexposure-prophylaxis-among-sexually-assaulted-patients-in-the-united-states
#10
Meredith Scannell, Tiffany Kim, Barbara J Guthrie
Sexual assault (SA) is a major public health problem that leaves patients at risk for HIV. The gold standard of medical treatment for SA patients includes prophylactic treatment to prevent HIV. A meta-analysis was conducted and examined the rates of nonoccupational postexposure prophylaxis (n-PEP) offered to, accepted, and completed by SA patients who presented to emergency departments in the United States. Four points of data were analyzed: (a) SA patients who met the criteria and were offered n-PEP, (b) SA patients who were offered n-PEP and accepted the medication, (c) SA patients who accepted n-PEP treatment and completed at least one follow-up appointment, and (d) SA patients who completed the entire course of n-PEP...
October 26, 2017: Journal of the Association of Nurses in AIDS Care: JANAC
https://www.readbyqxmd.com/read/29172784/good-agreement-between-echocardiography-and-impedance-cardiography-in-the-assessment-of-left-ventricular-performance-in-hypertensive-patients
#11
Rodrigo Nazário Leão, Pedro Marques Da Silva, Rita Marques Pocinho, Marta Alves, Daniel Virella, Roberto Palma Reis
BACKGROUND: Impedance cardiography (ICG) is a noninvasive hemodynamic monitoring tool which can define hypertensive patients' hemodynamic profiles and help to tailor antihypertensive therapy. This study assesses the concordance between ICG-derived indexes used to evaluate left ventricular performance and transthoracic echocardiography (TTE) in hypertensive patients. METHODS: In this IMPEDDANS post-hoc analysis, the ICG-derived indexes are compared with TTE by Bland-Altman method...
November 27, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29169119/obp-fused-with-cell-penetrating-peptides-promotes-liposomal-transduction
#12
Filipa Gonçalves, Tarsila G Castro, Eugénia Nogueira, Ricardo Pires, Carla Silva, Artur Ribeiro, Artur Cavaco-Paulo
Cell-penetrating peptides (CPPs) have been applied as novel transport systems with the ability to facilitate the delivery of peptides, proteins, and oligonucleotides into cells. Herein, we designed different fusion proteins composed by pig odorant binding protein (OBP-I) and three CPPs, namely Tat, pVEC and Pep-1. A new methodology using liposomes as reservoirs and OBP:CPPs as carriers was developed as an advanced system to capture odorant molecules. 1-aminoanthracene (1-AMA) was used as a model molecule to evaluate the transduction ability of OBP:CPPs into the reservoirs...
November 10, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29168051/efficient-conformational-ensemble-generation-of-protein-bound-peptides
#13
Yumeng Yan, Di Zhang, Sheng-You Huang
Conformation generation of protein-bound peptides is critical for the determination of protein-peptide complex structures. Despite significant progress in conformer generation of small molecules, few methods have been developed for modeling protein-bound peptide conformations. Here, we have developed a fast de novo peptide modeling algorithm, referred to as MODPEP, for conformational sampling of protein-bound peptides. Given a sequence, MODPEP builds the peptide 3D structure from scratch by assembling amino acids or helix fragments based on constructed rotamer and helix libraries...
November 22, 2017: Journal of Cheminformatics
https://www.readbyqxmd.com/read/29167920/atpase-activity-regulation-by-leader-peptide-processing-of-abc-transporter-maturation-and-secretion-protein-nukt-for-lantibiotic-nukacin-isk-1
#14
Sen Zheng, Jun-Ichi Nagao, Mami Nishie, Takeshi Zendo, Kenji Sonomoto
Lantibiotic nukacin ISK-1 is produced by Staphylococcus warneri ISK-1. The dual functional transporter NukT, an ABC transporter maturation and secretion protein, contributes to cleavage of the leader peptide from the prepeptide (modified NukA) and the final transport of nukacin ISK-1. NukT consists of an N-terminal peptidase domain (PEP), a C-terminal nucleotide-binding domain (NBD), and a transmembrane domain (TMD). In this study, NukT and its peptidase-inactive mutant were expressed, purified, and reconstituted into liposomes for analysis of their peptidase and ATPase activities...
November 22, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29166654/therapeutic-efficacy-of-equine-botulism-antitoxin-in-rhesus-macaques
#15
Shantha Kodihalli, Andrew Emanuel, Teresa Takla, Yi Hua, Charles Hobbs, Ross LeClaire, Denise C O'Donnell
BACKGROUND: There are currently no licensed vaccines available for prevention of botulism in humans. The vaccination is not desirable due to expanding therapeutic indications of botulinum toxins. The only available specific treatment for botulism is antitoxin to remove circulating toxin, thus, preventing further neuronal damage. BAT® (Botulism Antitoxin Heptavalent (A, B, C, D, E, F, G)-(Equine)) has been developed and its therapeutic efficacy evaluated against botulinum neurotoxin serotype A (BoNT/A) in Rhesus macaques...
2017: PloS One
https://www.readbyqxmd.com/read/29166368/public-health-economic-burden-associated-with-two-single-measles-case-investigations-colorado-2016-2017
#16
Grace E Marx, Jennifer Chase, Joseph Jasperse, Kaylan Stinson, Carol E McDonald, Janine K Runfola, Jillian Jaskunas, Donna Hite, Meghan Barnes, Michele Askenazi, Bernadette Albanese
During July 2016-January 2017, two unrelated measles cases were identified in the Denver, Colorado area after patients traveled to countries with endemic measles transmission. Each case resulted in multiple exposures at health care facilities and public venues, and activated an immediate and complex response by local and state public health agencies, with activities led by the Tri-County Health Department (TCHD), which serves Adams, Arapahoe, and Douglas counties. To track the economic burden associated with investigating and responding to single measles cases, personnel hours and supply costs incurred during each investigation were tracked prospectively...
November 24, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/29166055/the-entropy-of-a-complex-molecule
#17
Gérôme Faure, Rafael Delgado-Buscalioni, Pep Español
Entropy is a central concept in the theory of coarse-graining. Through Einstein's formula, it provides the equilibrium probability distribution of the coarse-grained variables used to describe the system of interest. We study with molecular dynamics simulations the equilibrium probability distribution of thermal blobs representing at a coarse-grained level star polymer molecules in melt. Thermal blobs are characterized by the positions and momenta of the centers of mass, and internal energies of the molecules...
June 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29164332/individual-trajectories-of-cognitive-performance-in-first-episode-psychosis-a-2-year-follow-up-study
#18
A M Sánchez-Torres, L Moreno-Izco, R Lorente-Omeñaca, B Cabrera, A Lobo, A M González-Pinto, J Merchán-Naranjo, I Corripio, E Vieta, E de la Serna, A Butjosa, F Contreras, S Sarró, G Mezquida, M Ribeiro, M Bernardo, M J Cuesta
Individual changes over time in cognition in patients with psychotic disorders have been studied very little, especially in the case of first episode psychosis (FEP). We aimed to establish whether change in individual trajectories in cognition over 2 years of a sample of 159 FEP patients was reliable and clinically significant, using the reliable change index (RCI) and clinically significant change (CSC) methods. We also studied a sample of 151 matched healthy controls. Patients and controls were assessed with a set of neuropsychological tests, as well as premorbid, clinical and functionality measures...
November 21, 2017: European Archives of Psychiatry and Clinical Neuroscience
https://www.readbyqxmd.com/read/29163969/ercp-in-infants-children-and-adolescents-is-feasible-and-safe-results-from-a-tertiary-care-center
#19
Jasmin Felux, Ekkehard Sturm, Andreas Busch, Emanuel Zerabruck, Florian Graepler, Dietmar Stüker, Andreas Manger, Hans-Joachim Kirschner, Gunnar Blumenstock, Nisar P Malek, Martin Goetz
Background: Indications for endoscopic retrograde cholangiopancreatography (ERCP) in children differ from adults. Paucity of data and concerns about potential lower effectiveness and more side effects limit its use even in high volume centers. We retrospectively analyzed indications, success rates, limitations, and side effects of ERCPs in children <18 years. Methods: From January 2012 to March 2015, 54 ERCPs were performed in 31 children (median age 11 (0-17) years; median weight 22 (3...
November 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/29163296/post-event-processing-predicts-impaired-cortisol-recovery-following-social-stressor-the-moderating-role-of-social-anxiety
#20
Shunta Maeda, Tomoya Sato, Hironori Shimada, Hideki Tsumura
There is growing evidence that individuals with social anxiety show impaired cortisol recovery after experiencing social evaluative stressors. Yet, little is known regarding the cognitive processes underlying such impaired cortisol recovery. The present study examined the effect of post-event processing (PEP), referred to as repetitive thinking about social situations, on cortisol recovery following a social stressor. Forty-two non-clinical university students (23 women, 19 men, mean age = 22.0 ± 2.0 years) completed the Trier Social Stress Test (TSST), followed by a thought sampling procedure which assessed the frequency of PEP reflecting the TSST...
2017: Frontiers in Psychology
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