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https://www.readbyqxmd.com/read/29222043/catheter-ablation-of-atrial-fibrillation-in-patients-with-heart-failure-and-preserved-ejection-fraction
#1
Eric Black-Maier, Xinru Ren, Benjamin A Steinberg, Cynthia L Green, Adam S Barnett, Normita Sta Rosa, Sana M Al-Khatib, Brett D Atwater, James P Daubert, Camille Frazier-Mills, Augustus O Grant, Donald D Hegland, Kevin P Jackson, Larry R Jackson, Jason I Koontz, Robert K Lewis, Albert Y Sun, Kevin L Thomas, Tristam D Bahnson, Jonathan P Piccini
BACKGROUND: Few studies have examined outcomes of catheter ablation for atrial fibrillation (AF) in patients with heart failure with preserved ejection fraction (HFpEF). OBJECTIVE: Compare outcomes of AF ablation in patients with HFpEF versus HF with reduced ejection fraction (HFrEF). METHODS: We performed a retrospective study of 230 patients with HF who underwent AF ablation, including 97 (42.2%) with HFrEF and 133 (57.8%) with HFpEF. Outcomes included adverse events, symptoms (Mayo AF Symptom Inventory [MAFSI]), New York Heart Association (NYHA) functional class, and freedom from recurrent atrial arrhythmia at 12-months...
December 5, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29218625/diuretic-or-beta-blocker-for-hypertensive-patients-already-receiving-acei-arb-and-calcium-channel-blocker
#2
Min-Shan Tsai, Chao-Hsiun Tang, Chia-Ying Lin, Po-Ya Chuang, Nai-Chuan Chen, Chien-Hua Huang, Wei-Tien Chang, Tzung-Dau Wang, Ping-Hsun Yu, Wen-Jone Chen
BACKGROUND: In patients already receiving combination of angiotensin-converting enzyme inhibitor (ACEI)/angiotensin receptor blocker (ARB) and calcium channel blocker (CCB), whether the choice of additional diuretic or beta-blocker affects the cardiovascular and cerebrovascular outcomes remains unclear. METHODS: A total of 13,551 patients who were concurrently receiving three anti-hypertensive agents of different classes through outpatient clinics during 2004-2006 were identified from the National Health Insurance Research Database of Taiwan...
December 8, 2017: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/29210942/auditory-related-resting-state-fmri-functional-connectivity-in-tinnitus-patients-tinnitus-diagnosis-performance
#3
Shujiro B Minami, Naoki Oishi, Takahisa Watabe, Kimiichi Uno, Kaoru Ogawa
OBJECTIVE: The purpose of the present study was to investigate functional connectivity in tinnitus patients with and without hearing loss, and design the tinnitus diagnosis performance by resting state functional magnetic resonance imaging (rs-fMRI). SUBJECTS AND METHODS: Nineteen volunteers with normal hearing without tinnitus, 18 tinnitus patients with hearing loss, and 11 tinnitus patients without hearing loss were enrolled in this study. The subjects were evaluated with rs-fMRI, and region of interests (ROIs) based correlation analyses were performed using the CONN toolbox version 16 and SPM version 8...
November 28, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29201017/characterization-of-metagenomes-in-urban-aquatic-compartments-reveals-high-prevalence-of-clinically-relevant-antibiotic-resistance-genes-in-wastewaters
#4
Charmaine Ng, Martin Tay, Boonfei Tan, Thai-Hoang Le, Laurence Haller, Hongjie Chen, Tse H Koh, Timothy M S Barkham, Karina Y-H Gin
The dissemination of antimicrobial resistance (AMR) is an escalating problem and a threat to public health. Comparative metagenomics was used to investigate the occurrence of antibiotic resistant genes (ARGs) in wastewater and urban surface water environments in Singapore. Hospital and municipal wastewater (n = 6) were found to have higher diversity and average abundance of ARGs (303 ARG subtypes, 197,816 x/Gb) compared to treated wastewater effluent (n = 2, 58 ARG subtypes, 2,692 x/Gb) and surface water (n = 5, 35 subtypes, 7,985 x/Gb)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29198976/ligand-free-method-to-produce-the-anti-angiogenic-recombinant-galectin-3-carbohydrate-recognition-domain
#5
Adalgisa Wiecikowski, Katia Maria Dos Santos Cabral, Marcius da Silva Almeida, Renato Sampaio Carvalho
Galectin-3 (Gal3) is involved in many physiological processes related to tumor growth, such as promoting angiogenesis, cell migration/invasion, resistance to apoptosis and immune response modulation. Usually the overexpression of Gal3 is a poor prognostic marker for cancer patients. Recombinant Gal3 carbohydrate domain (Gal3C) has been proposed as a useful tool to inhibit angiogenesis. So far, all production protocols reported for Gal3C production have used proteolytic cleavage of full length Gal3 and/or affinity-based purification...
November 30, 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/29196682/on-the-proportional-abundance-of-species-integrating-population-genetics-and-community-ecology
#6
Pablo A Marquet, Guillermo Espinoza, Sebastian R Abades, Angela Ganz, Rolando Rebolledo
The frequency of genes in interconnected populations and of species in interconnected communities are affected by similar processes, such as birth, death and immigration. The equilibrium distribution of gene frequencies in structured populations is known since the 1930s, under Wright's metapopulation model known as the island model. The equivalent distribution for the species frequency (i.e. the species proportional abundance distribution (SPAD)), at the metacommunity level, however, is unknown. In this contribution, we develop a stochastic model to analytically account for this distribution (SPAD)...
December 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29191465/crystal-structure-of-ryanodine-receptor-n-terminal-domain-from-plutella-xylostella-reveals-two-potential-species-specific-insecticide-targeting-sites
#7
Lianyun Lin, Chen Liu, Juan Qin, Jie Wang, Shengjie Dong, Wei Chen, Weiyi He, Qingzhi Gao, Minsheng You, Zhiguang Yuchi
Ryanodine receptors (RyRs) are large calcium-release channels located in sarcoplasmic reticulum membrane. They play a central role in excitation-contraction coupling of muscle cells. Three commercialized insecticides targeting pest RyRs generate worldwide sales over 2 billion U.S. dollars annually, but the structure of insect RyRs remains elusive, hindering our understanding of the mode of action of RyR-targeting insecticides and the development of insecticide resistance in pests. Here we present the crystal structure of RyR N-terminal domain (NTD) (residue 1-205) at 2...
November 27, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29187565/clinical-and-laboratory-standards-institute-clsi-evaluation-of-oxacillin-and-cefoxitin-disk-diffusion-and-minimum-inhibitory-concentration-breakpoints-for-detection-of-meca-mediated-oxacillin-resistance-in-staphylococcus-schleiferi
#8
H K Huse, S A Miller, S Chandrasekaran, J A Hindler, S D Lawhon, D A Bemis, L F Westblade, R M Humphries
Staphylococcus schleiferi is a beta-hemolytic, coagulase-variable colonizer of small animals that can cause opportunistic infections in humans. In veterinary isolates, mecA-mediated oxacillin resistance is significant, with reported resistance rates of >39%. The goal of this study was to evaluate oxacillin and cefoxitin disk diffusion (DD) and minimum inhibitory concentration (MIC) breakpoints for detection of mecA-mediated oxacillin resistance in 52 human and 38 veterinary isolates of S. schleiferi Isolates were tested on multiple brands of commercial media following Clinical and Laboratory Standards Institute (CLSI) methods...
November 29, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29184190/bacterial-endosymbionts-influence-host-sexuality-and-reveal-reproductive-genes-of-early-divergent-fungi
#9
Stephen J Mondo, Olga A Lastovetsky, Maria L Gaspar, Nicole H Schwardt, Colin C Barber, Robert Riley, Hui Sun, Igor V Grigoriev, Teresa E Pawlowska
Many heritable mutualisms, in which beneficial symbionts are transmitted vertically between host generations, originate as antagonisms with parasite dispersal constrained by the host. Only after the parasite gains control over its transmission is the symbiosis expected to transition from antagonism to mutualism. Here, we explore this prediction in the mutualism between the fungus Rhizopus microsporus (Rm, Mucoromycotina) and a beta-proteobacterium Burkholderia, which controls host asexual reproduction. We show that reproductive addiction of Rm to endobacteria extends to mating, and is mediated by the symbiont gaining transcriptional control of the fungal ras2 gene, which encodes a GTPase central to fungal reproductive development...
November 29, 2017: Nature Communications
https://www.readbyqxmd.com/read/29181489/the-alzheimer-s-prevention-initiative-generation-program-evaluating-cnp520-efficacy-in-the-prevention-of-alzheimer-s-disease
#10
C Lopez Lopez, A Caputo, F Liu, M E Riviere, M-L Rouzade-Dominguez, R G Thomas, J B Langbaum, R Lenz, E M Reiman, A Graf, P N Tariot
Alzheimer's disease pathology begins decades before the onset of clinical symptoms. This provides an opportunity for interventional clinical trials to potentially delay or prevent the onset of cognitive impairment or dementia. CNP520 (a beta-site-amyloid precursor protein-cleaving enzyme inhibitor) is in clinical development for the treatment of preclinical Alzheimer's disease under the Alzheimer's Prevention Initiative Generation Program. The Alzheimer's Prevention Initiative is a public-private partnership intended to accelerate the evaluation of Alzheimer's disease prevention therapies...
2017: Journal of Prevention of Alzheimer's Disease
https://www.readbyqxmd.com/read/29176966/induction-of-tyrosine-phosphorylation-of-uv-activated-egfr-by-the-beta-human-papillomavirus-type-8-e6-leads-to-papillomatosis
#11
Stefanie Taute, Herbert J Pfister, Gertrud Steger
Epidemiological evidence is accumulating that beta-human papillomaviruses (HPV) synergize with UV-light in the development of precancerous actinic keratosis, and cutaneous squamous cell carcinomas (cSCC), one of the most common cancers in the Caucasian population. We previously demonstrated the tumorigenic activity of beta-HPV type 8 (HPV8) in the skin of transgenic mice and its cooperation with UV-light. Analysis of underlying mechanisms now showed that in keratinocytes expressing the HPV8E6 protein a transient increase of tyrosine phosphorylated epidermal growth factor receptor (EGFR) in response to UV-irradiation occurred, while EGFR tyrosine phosphorylation, i...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29176754/the-o-specific-polysaccharide-lyase-from-the-phage-lka1-tailspike-reduces-pseudomonas-virulence
#12
Tomasz Olszak, Mikhail M Shneider, Agnieszka Latka, Barbara Maciejewska, Christopher Browning, Lada V Sycheva, Anneleen Cornelissen, Katarzyna Danis-Wlodarczyk, Sofya N Senchenkova, Alexander S Shashkov, Grzegorz Gula, Michal Arabski, Slawomir Wasik, Konstantin A Miroshnikov, Rob Lavigne, Petr G Leiman, Yuriy A Knirel, Zuzanna Drulis-Kawa
Pseudomonas phage LKA1 of the subfamily Autographivirinae encodes a tailspike protein (LKA1gp49) which binds and cleaves B-band LPS (O-specific antigen, OSA) of Pseudomonas aeruginosa PAO1. The crystal structure of LKA1gp49 catalytic domain consists of a beta-helix, an insertion domain and a C-terminal discoidin-like domain. The putative substrate binding and processing site is located on the face of the beta-helix whereas the C-terminal domain is likely involved in carbohydrates binding. NMR spectroscopy and mass spectrometry analyses of degraded LPS (OSA) fragments show an O5 serotype-specific polysaccharide lyase specificity...
November 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29174455/high-power-beta-electron-device-beyond-betavoltaics
#13
William M Ayers, Charles A Gentile
Developing watt level power sources with beta emitting radioisotopes has been limited by the inability to utilize high energy (> 100KeV) beta emitters at high radioisotope loadings without damaging the energy conversion materials. A new type of beta electron power source is described that removes those restrictions. The approach contains the radioisotope in a beta transparent titanium tube and confines beta electrons emitted through the tube wall to spiral trajectories around the tube with an axial magnetic field...
November 10, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/29173791/new-antimicrobial-agents-for-the-treatment-of-staphylococcal-infections-in-children
#14
REVIEW
Roopali Sharma, Densley Francois, Margaret R Hammerschlag
Several new antimicrobial agents-daptomycin, ceftaroline, telavancin, dalbavancin, and-tedizolid have been approved for the treatment of staphylococcal infections, including methicillin-resistant Staphylococcus aureus (MRSA), in adults. Ceftaroline and daptomycin have been approved by the US Food and Drug Administration for use in children. Ceftaroline, a beta-lactam antibiotic with activity against MRSA, has been approved for treatment of community-acquired bacterial pneumonia and complicated skin and skin structure infections...
December 2017: Pediatric Clinics of North America
https://www.readbyqxmd.com/read/29162022/confronting-the-challenge-of-beta-lactam-allergies-a-quasi-experimental-study-assessing-impact-of-pharmacy-led-interventions
#15
Steven C Krey, Jeff Waise, Lee P Skrupky
OBJECTIVE: To improve allergy history documentation and increase the use of beta-lactams when appropriate in patients with a reported beta-lactam allergy. METHODS: This pre-post study was conducted at a 167-bed tertiary care community hospital and evaluated multidisciplinary interventions on allergy documentation and antibiotic selection. Interventions included education, creation of local practice guidelines, and modified practices for pharmacists and pharmacy technicians...
January 1, 2017: Journal of Pharmacy Practice
https://www.readbyqxmd.com/read/29158665/pharmacokinetics-and-tolerability-of-mb12066-a-beta-lapachone-derivative-targeting-nad-p-h-quinone-oxidoreductase-1-two-independent-double-blind-placebo-controlled-combined-single-and-multiple-ascending-dose-first-in-human-clinical-trials
#16
Seokuee Kim, SeungHwan Lee, Joo-Youn Cho, Seo Hyun Yoon, In-Jin Jang, Kyung-Sang Yu
MB12066 is a molecule derived from β-lapachone that shown effects on obesity in previous studies. The present studies were conducted to evaluate the tolerability and pharmacokinetics (PK) of MB12066 after the oral administration of single and multiple doses to healthy volunteers. The study comprised 2 independent, randomized, double-blind, placebo-controlled, combined single and multiple ascending dose first-in-human clinical trials to evaluate the safety, tolerability and PK of MB12066 in healthy Korean volunteers...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/29139561/the-novel-potent-and-highly-selective-5-ht4-receptor-agonist-yh12852-significantly-improves-both-upper-and-lower-gastrointestinal-motility
#17
Eun Jeong Jeong, Soo Yong Chung, Han Na Hong, Se-Woong Oh, Jae Young Sim
BACKGROUND AND PURPOSE: 5-HT4 receptor agonists have been shown to be effective to treat various gastrointestinal tract disorders. However, a lack of selectivity against off-targets has been a limiting factor. EXPERIMENTAL APPROACH: The binding affinity and selectivity of YH12852 for human 5-HT4(a) receptor in CHO-K1 cells were evaluated using radioligand binding assays, and agonistic activity was assessed using a beta-lactamase reporter system. Contractile activity and propulsive motility were measured in isolated guinea pig distal colon...
November 15, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29134927/cerebral-amyloid-angiopathy-associated-with-inflammation-a-systematic-review-of-clinical-and-imaging-features-and-outcome
#18
Andrej Corovic, Siobhan Kelly, Hugh S Markus
Background Cerebral amyloid angiopathy associated with inflammation is an increasingly recognized condition, characterized by an inflammatory response to the vascular deposits of β-amyloid within the brain that are the hallmark of cerebral amyloid angiopathy. Two main patterns of this inflammatory response have been identified to date: one involving a perivascular inflammatory cell infiltrate (cerebral amyloid angiopathy-related inflammation); the other a transmural vasculitic process (A-beta related angiitis)...
January 1, 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/29132041/preparation-of-a-beta-tricalcium-phosphate-nanocoating-and-its-protein-adsorption-behaviour-by-quartz-crystal-microbalance-with-dissipation-technique
#19
Dongwen Pang, Liyong He, Luxi Wei, Huade Zheng, Chunlin Deng
Beta-tricalcium phosphate (β-TCP) nanocoatings, which can be analysed using a quartz crystal microbalance with dissipation technique (QCM-D), were fabricated on a gold surface by electrophoretic deposition. The influences of electric field intensity and electrophoresis time were investigated. The adsorption behaviours of bovine serum albumin (BSA) and lysozyme (LSZ) on Au and β-TCP surfaces were observed in real time by QCM-D. The homogeneous β-TCP nanocoating with moderately sized particles on gold surface was fabricated at 25V/cm for 5min, and it met the requirements for the QCM-D experiment...
November 8, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29131738/experiences-of-women-who-participated-in-a-beta-test-for-an-online-streamed-yoga-intervention-after-a-stillbirth
#20
Jennifer L Huberty, Jeni Matthews, Jenn Leiferman, Joanne Cacciatore
BACKGROUND: Little is known about how to best care for mothers after stillbirth. As such, this paper will report the satisfaction and perceptions of an online yoga intervention (12-week beta test) in women after stillbirth. METHODS: Participants (n=74) had a stillbirth within the last 24-months (M time since loss 9.65 ± 6.9 months). Post-intervention satisfaction surveys and interviews and dropout surveys were conducted. Descriptive statistics were used to analyze survey responses and demographic information...
November 2017: International Journal of Yoga Therapy
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