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https://www.readbyqxmd.com/read/29144020/combining-click-sulfur-vi-fluoride-exchange-with-photoiniferters-a-facile-fast-and-efficient-strategy-for-postpolymerization-modification
#1
Peixi Wang, Yishi Dong, Xiaowen Lu, Zhaoqiang Wu, Hong Chen
"Click" type reactions represent the currently most prevalent postpolymerization strategy for the preparation of functional polymeric materials. Herein, a novel photoiniferter agent 4-(fluorosulfonyl)benzyl diethylcarbamodithioate (FSB-DECT) containing both dithiocarbamates and sulfonyl fluoride moieties is developed to act as both photoinitiator and click sulfur(VI)-fluoride exchange (SuFEx) agent. The photopolymerization behavior of FSB-DECT is demonstrated via standard photoiniferter-mediated polymerization for various types of monomer including N-isopropylacrylamide (NIPAAm), glycidyl methacrylate, and vinyl acetate (VAc)...
November 16, 2017: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/29135579/markers-of-chronic-obstructive-pulmonary-disease-are-associated-with-mortality-in-people-living-with-hiv
#2
Matthew Triplette, Amy Justice, Engi F Attia, Janet Tate, Sheldon T Brown, Matthew Bidwell Goetz, Joon W Kim, Maria C Rodriguez-Barradas, Guy W Soo Hoo, Cherry Wongtrakool, Kathleen Akgün, Kristina Crothers
OBJECTIVE: Aging people living with HIV (PLWH) face an increased burden of comorbidities, including chronic obstructive pulmonary disease (COPD). The impact of COPD on mortality in HIV remains unclear. We examined associations between markers of COPD and mortality among PLWH and uninfected subjects. DESIGN: Longitudinal analysis of the Examinations of HIV-Associated Lung Emphysema (EXHALE) cohort study. METHODS: EXHALE includes 196 PLWH and 165 uninfected smoking-matched subjects who underwent pulmonary function testing and CT scans to define COPD and were followed...
November 10, 2017: AIDS
https://www.readbyqxmd.com/read/29128366/vaccarin-protects-human-microvascular-endothelial-cells-from-apoptosis-via-attenuation-of-hdac1-and-oxidative-stress
#3
Xuexue Zhu, Yueyue Lei, Fanggen Tan, Leilei Gong, Haifeng Gong, Wei Yang, Ting Chen, Zhixuan Zhang, Weiwei Cai, Bao Hou, Xu Wang, Haijian Sun, Yuetao Zhou, Liying Qiu
Vaccarin (VAC), an active flavonoid glycoside from vaccariae semen, exhibits extensive biological activities including vascular endothelial cell protective effects. Histone deacetylase1 (HDAC1) is an epigenetic regulator in cellular apoptosis. In this study, we evaluated the protective effects of VAC on high glucose (HG)-induced cell apoptosis in human microvascular endothelial cells (HMEC-1). The levels of reactive oxygen species, activities of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH-Px) were measured...
November 8, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29126595/burn-patients-with-infection-related-ventilator-associated-complications-have-worse-outcomes-compared-to-those-without-ventilator-associated-events
#4
Duraid Younan, Russell Griffin, Ahmed Zaky, Jean-Francois Pittet, Bernard Camins
BACKGROUND: The Centers for Disease Control and Prevention (CDC) replaced its definition for ventilator-associated pneumonia (VAP) in 2013. The aim of the current study is to compare the outcome of burn patients with ventilator associated events (VAEs). METHODS: Burn patients with at least two days of ventilator support were identified from the registry between 2013 and 2016. Kruskal-Wallis and Fisher's exact tests were utilized for continuous and categorical variables, respectively...
October 31, 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/29124073/first-necrotizing-fasciitis-caused-by-haemophilus-influenza-serotype-a
#5
Giang T Quach, Jared Frisby, Kurt Kralovich, Mustafa Bohra
Necrotizing fasciitis (NF) is an infrequently encountered skin infection that has high morbidity and mortality, even with prompt medical and surgical intervention. We describe the case of a 67-year-old male presenting with significant NF in his left lower extremity, despite aggressive surgical intervention, and included multiple surgical debridements, ACell Matrix, split-thickness, and negative wound VAC therapy. Ultimately, this patient required a below the knee amputation. This is the first documented case of Haemophilus influenza type a causing NF...
October 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/29117823/feasibility-and-advantages-of-full-thickness-skin-graft-from-the-anterolateral-thigh
#6
Seung-Han Shin, Chulkyu Kim, Yong-Suk Lee, Jin-Woo Kang, Yang-Guk Chung
BACKGROUND: Full thickness skin graft (FTSG) gives better outcomes than split thickness skin graft (STSG), but it has the drawback of limited donor sites. Anterolateral thigh (ALT), a popular donor site of STSG, is also a popular donor site of perforator flaps. This area has the advantage of large flap size available with primary closure. Based on this we harvested FTSG instead of STSG from the ALT. METHODS: We retrospectively reviewed 10 cases of FTSG from the ALT, with the recipient site of foot in 3, ankle in 2, lower leg in 2, forearm in 2, and wrist in 1 patient...
December 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/29112041/alcohol-and-mortality-combining-self-reported-audit-c-and-biomarker-detected-peth-alcohol-measures-among-hiv-infected-and-uninfected
#7
Oghenowede Eyawo, Kathleen A McGinnis, Amy C Justice, David A Fiellin, Judith A Hahn, Emily C Williams, Adam J Gordon, Brandon D L Marshall, Kevin L Kraemer, Stephen Crystal, Julie R Gaither, E Jennifer Edelman, Kendall J Bryant, Janet P Tate
BACKGROUND: Unhealthy alcohol use may be particularly detrimental among individuals living with HIV and/or HCV, and is often under-reported. Direct biomarkers of alcohol exposure may facilitate improved detection of alcohol use. METHODS: We evaluated the association of alcohol exposure determined by both self-report (Alcohol Use Disorders Identification Test-Consumption [AUDIT-C]) and a direct biomarker (phosphatidylethanol [PEth]), with mortality among HIV-infected and uninfected in the VACS-Biomarker Cohort...
November 2, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29096508/links-between-the-charge-model-and-bonded-parameter-force-constants-in-biomolecular-force-fields
#8
David S Cerutti, Karl T Debiec, David A Case, Lillian T Chong
The ff15ipq protein force field is a fixed charge model built by automated tools based on the two charge sets of the implicitly polarized charge method: one set (appropriate for vacuum) for deriving bonded parameters and the other (appropriate for aqueous solution) for running simulations. The duality is intended to treat water-induced electronic polarization with an understanding that fitting data for bonded parameters will come from quantum mechanical calculations in the gas phase. In this study, we compare ff15ipq to two alternatives produced with the same fitting software and a further expanded data set but following more conventional methods for tailoring bonded parameters (harmonic angle terms and torsion potentials) to the charge model...
October 28, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29096162/violence-against-children-in-afghanistan-concerns-and-opportunities-for-positive-change
#9
Patrick O'Leary, Cate M Cameron, Ali Lakhani, Jodie M Osborne, Luana de Souza, Kristen Hope, Mohammad S Naimi, Hassan Khan, Qazi S Jawad, Sabir Majidi
Violence against children (VAC) in Afghanistan is a serious issue in the context of many decades of conflict and poverty. To date, limited studies have explored the extent of VAC in Afghanistan and the settings where VAC takes place. To understand (i) the extent of VAC, (ii) settings where VAC takes place, (iii) parental forms of VAC and (iv) regional differences, an interview administered cross-sectional survey was employed among a community sample of 145 children and 104 parents living within Kabul, Torkham, and Jalalabad...
October 30, 2017: Child Abuse & Neglect
https://www.readbyqxmd.com/read/29073936/evaluation-of-the-efficacy-of-a-commercial-inactivated-genogroup-2b-based-porcine-epidemic-diarrhea-virus-pedv-vaccine-and-experimental-live-genogroup-1b-exposure-against-2b-challenge
#10
Tanja Opriessnig, Priscilla F Gerber, Huigang Shen, Alessandra Marnie M G de Castro, Jianqiang Zhang, Qi Chen, Patrick Halbur
Porcine epidemic diarrhea virus strains from the G1b cluster are considered less pathogenic compared to the G2b cluster. The aim of this study was to compare the ability of G1b-based live virus exposure against use of a commercial G2b-based inactivated vaccine to protect growing pigs against G2b challenge. Thirty-nine PEDV naïve pigs were randomly divided into five groups: EXP-IM-1b (intramuscular G1b exposure; G2b challenge), EXP-ORAL-1b (oral G1b exposure; G2b challenge), VAC-IM-2b (intramuscular commercial inactivated G2b vaccination; G2b challenge), POS-CONTROL (sham-vaccination; G2b challenge) and NEG-CONTROL (sham-vaccination; sham-challenge)...
October 26, 2017: Veterinary Research
https://www.readbyqxmd.com/read/29068042/high-volatile-anaesthetic-conservation-with-a-digital-in-line-vaporizer-and-a-reflector
#11
A Mashari, L Fedorko, J A Fisher, M Klein, M Wąsowicz, M Meineri
BACKGROUND: A volatile anaesthetic (VA) reflector can reduce VA consumption (VAC) at the cost of fine control of its delivery and CO2 accumulation. A digital in-line vaporizer and a second CO2 absorber circumvent both of these limitations. We hypothesized that the combination of a VA reflector with an in-line vaporizer would yield substantial VA conservation, independent of fresh gas flow (FGF) in a circle circuit, and provide fine control of inspired VA concentrations. METHOD: Prospective observational study on six Yorkshire pigs...
October 25, 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/29063202/vitex-agnus-castus-for-premenstrual-syndrome-and-premenstrual-dysphoric-disorder-a-systematic-review
#12
REVIEW
Raphael O Cerqueira, Benicio N Frey, Emilie Leclerc, Elisa Brietzke
The objective of this study was to evaluate whether Vitex agnus castus is a safe and effective treatment for PMS and premenstrual dysphoric disorder (PMDD) and to discuss the implications of these findings for clinical practice. A systematic review of literature was conducted using PubMed and Scielo databases. The inclusion criteria were randomized controlled trials (RCT) using V. agnus castus in individuals with PMS or PMDD that compared this intervention with placebo or an active comparator and included a description of blinding and dropouts/withdrawals...
October 23, 2017: Archives of Women's Mental Health
https://www.readbyqxmd.com/read/29052826/fournier-s-gangrene-a-retrospective-analysis-of-25-patients
#13
Metin Yücel, Adnan Özpek, Fatih Başak, Ali Kılıç, Ethem Ünal, Sema Yüksekdağ, Aylin Acar, Gürhan Baş
BACKGROUND: Fournier's gangrene is a surgical emergency that progresses rapidly and insidiously and results in high morbidity and mortality rates unless it is immediately diagnosed and managed. Here we analyze the outcomes of patients who were followed up and treated for Fournier's gangrene. METHODS: We conducted a retrospective analysis of the medical data of 25 patients operated on for Fournier's gangrene between January 2010 and June 2015. The diagnosis of Fournier's gangrene was made by performing a physical examination...
September 2017: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/29047548/characterization-and-control-of-the-electro-optic-phase-dispersion-in-lithium-niobate-modulators-for-wide-spectral-band-interferometry-applications-in-the-mid-infrared
#14
S Heidmann, G Ulliac, N Courjal, G Martin
Mid-infrared wideband modulation (3.2-3.7 μm) is achieved in an electro-optic Y-junction using lithium niobate waveguides in TE polarized light. Comparison between external (scanning mirror) and internal (electro-optical) modulation allows studying the chromatic polynomial dependence of the relative phase. Internal modulation consists on a VAC ramp up to 370 V at 0.25 Hz, applied over 14 mm long electrodes with 14 μm separation. The overall VπLπ obtained is 17.5 V·cm, meaning that using a 300 V generator we can actively scan and track the whole L-band (3...
May 10, 2017: Applied Optics
https://www.readbyqxmd.com/read/29046458/a-tyrosine-based-trafficking-motif-of-the-tegument-protein-pul71-is-crucial-for-human-cytomegalovirus-secondary-envelopment
#15
Andrea N Dietz, Clarissa Villinger, Stefan Becker, Manfred Frick, Jens von Einem
The human cytomegalovirus (HCMV) tegument protein pUL71 is required for efficient secondary envelopment and accumulates at the Golgi-derived viral assembly complex (vAC) during infection. Analysis of various C-terminally truncated pUL71 fused to eGFP identified amino acids 23-34 as important determinants for its Golgi localization. Sequence analysis and mutational verification revealed the presence of an N-terminal tyrosine-based trafficking motif (YxxΦ) in pUL71. This led us to hypothesize a requirement of the YxxΦ motif for the function of pUL71 in infection...
October 18, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29041777/frequency-dependence-of-low-voltage-electrowetting-investigated-by-impedance-spectroscopy
#16
Ying-Jia Li, Brian P Cahill
An electrowetting-on-dielectric (EWOD) electrode was developed that facilitates the use of low alternating voltages (≤5 VAC). This allows online investigation of the frequency dependence of electrowetting by means of impedance spectroscopy. The EWOD electrode is based on a dielectric bilayer consisting of an anodic tantalum pentoxide (Ta2O5) thin film (d = 59.35 nm) with a high relative permittivity (εd = 26.3) and a self-assembled hydrophobic silane monolayer. The frequency dependence of electrowetting was studied using an aqueous μL-sized sessile droplet on the planar EWOD electrode in oil...
November 2, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29034563/heart-failure-study-of-multipoint-pacing-effects-on-ventriculoarterial-coupling-rationale-and-design-of-the-humvee-trial
#17
Christina Chrysohoou, Polychronis Dilaveris, Christos-Konstantinos Antoniou, Ioannis Skiadas, Konstantinos Konstantinou, Konstantinos Gatzoulis, Ioannis Kallikazaros, Dimitrios Tousoulis
Cardiac resynchronization therapy (CRT) is an established therapy for symptomatic heart failure (HF). Unfortunately, many recipients remain nonresponders. Studies have revealed the potential role of multipoint pacing (MPP) in improving response and outcomes. The aim of this study is to compare the effects of MPP against those of standard biventricular pacing (BVP) on (i) ventriculoarterial coupling (VAC) and energy efficiency of the failing heart, (ii) diastolic function, (iii) quality of life, and (iv) NT-proBNP levels and glomerular filtration rate (GFR) during a follow-up of 13 months...
October 15, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29019713/modified-endoscopic-vacuum-therapy-for-nonhealing-esophageal-anastomotic-leak-technique-description-and-review-of-literature
#18
Guy Pines, Ilan Bar, Amir Elami, Shimon Sapojnikov, Ofir Hikri, Dennis Ton, Bruce Mosenkis, Ehud Melzer
BACKGROUND: Endoscopic vacuum-assisted closure (EVAC) therapy is increasingly being used as a new promising method for repairing upper gastrointestinal defects of different etiologies with high success rates. EVAC therapy consists of placing a sponge either within the lumen or within an abscess cavity connected with a nasogastric (NG) tube to a negative pressure system, thus decreasing bacterial contamination and edema and promoting granulation tissue proliferation, thereby gradually decreasing the cavity size until complete closure...
October 11, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28982775/a-virtual-asthma-clinic-for-children-fewer-routine-outpatient-visits-same-asthma-control
#19
Lara S van den Wijngaart, Jolt Roukema, Annemie L M Boehmer, Marianne L Brouwer, Cindy A C Hugen, Laetitia E M Niers, Arwen J Sprij, Eleonora R V M Rikkers-Mutsaerts, Bart L Rottier, A Rogier T Donders, Chris M Verhaak, Mariëlle W Pijnenburg, Peter J F M Merkus
eHealth is an appealing medium to improve healthcare and its value (in addition to standard care) has been assessed in previous studies. We aimed to assess whether an eHealth intervention could improve asthma control while reducing 50% of routine outpatient visits.In a multicentre, randomised controlled trial with a 16-month follow-up, asthmatic children (6-16 years) treated in eight Dutch hospitals were randomised to usual care (4-monthly outpatient visits) and online care using a virtual asthma clinic (VAC) (8-monthly outpatient visits with monthly web-based monitoring)...
October 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28969398/comparison-of-conventional-dressings-and-vacuum-assisted-closure-in-the-wound-therapy-of-fournier-s-gangrene
#20
Fatih Yanaral, Can Balci, Faruk Ozgor, Abdulmuttalip Simsek, Ozkan Onuk, Muammer Aydin, Baris Nuhoglu
OBJECTIVE: The purpose of our study was to compare Vacuum-assisted closure (VAC) and conventional dressings in the wound therapy of Fournier's gangrene (FG). MATERIALS AND METHODS: The study evaluated 54 patients, retrospectively. Following initial removal of necrotic and devitalized tissue, in Group I patients the wounds were covered with conventional antiseptic dressings and patients continued to be treated with conventional dressings. In Group II patients VAC therapy was initiated...
October 3, 2017: Archivio Italiano di Urologia, Andrologia
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