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https://www.readbyqxmd.com/read/28644613/impact-of-thermal-decomposition-on-thermal-desorption-instruments-advantage-of-thermogram-analysis-for-quantifying-volatility-distributions-of-organic-species
#1
Harald Stark, Reddy L N Yatavelli, Samantha L Thompson, Hyungu Kang, Jordan Edward Krechmer, Joel R Kimmel, Brett B Palm, Weiwei Hu, Patrick L Hayes, Douglas A Day, Pedro Campuzano-Jost, Manjula R Canagaratna, John T Jayne, Douglas R Worsnop, Jose L Jimenez
We present results from a high-resolution chemical ionization time-of-flight mass spectrometer (HRToF-CIMS), operated with two different thermal desorption inlets, designed to characterize the gas and aerosol composition. Data from two field campaigns at forested sites are shown. Particle volatility distributions are estimated using three different methods: thermograms, elemental formulas, and measured partitioning. Thermogram-based results are consistent with those from an aerosol mass spectrometer (AMS) with a thermal denuder, implying that thermal desorption is reproducible across very different experimental setups...
June 23, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28642146/is-antimicrobial-stewardship-cost-effective-a-narrative-review-of-the-evidence
#2
REVIEW
Nichola R Naylor, Nina Zhu, Marlies Hulscher, Alison Holmes, Raheelah Ahmad, Julie V Robotham
AIMS: This narrative review aimed to collate recent evidence on the cost-effectiveness and cost-benefit of antimicrobial stewardship (AMS) programmes, to address the question "is AMS cost-effective?", whilst providing resources and guidance for future research in this area. SOURCES: PubMed was searched for studies assessing the cost-effectiveness, cost-utility or cost-benefit of AMS interventions in humans, published from January 2000 to March 2017, with no setting inclusion/exclusion criteria specified...
June 19, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28639719/understanding-indigenous-patient-attendance-a-qualitative-study
#3
Stephen Copeland, Josephine Muir, Angus Turner
OBJECTIVE: To better understand Indigenous patient non-attendance at medical specialty appointments by learning from the patients attending their scheduled outreach ophthalmology clinic appointment. DESIGN, SETTING AND PARTICIPANTS: A qualitative study using face-to-face, semi-structured interviews with 69 Indigenous Australian ophthalmology patients and 8 clinic workers at one urban and one rural Aboriginal Medical Service (AMS) over the period from April 2015 to November 2015...
June 22, 2017: Australian Journal of Rural Health
https://www.readbyqxmd.com/read/28632494/long-term-dutasteride-therapy-in-men-with-benign-prostatic-hyperplasia-alters-glucose-and-lipid-profiles-and-increases-severity-of-erectile-dysfunction
#4
Abdulmaged Traish, Karim Sultan Haider, Gheorghe Doros, Ahmad Haider
Background Dutasteride has been successfully used in treatment of lower urinary tract symptoms (LUTS) secondary to benign prostatic hyperplasia (BPH). However, dutasteride inhibits 5α-reductase type 1 and type 2 enzymes and may compromises glucocorticoids and androgen metabolism and alters metabolic function resulting in undesirable metabolic and sexual adverse side effects. Aim The aim of this study was to investigate the long-term adverse effects of dutasteride therapy in men with BPH on: i) blood glucose, ii) glycated hemoglobin (HbA1c), iii) low density lipoprotein-cholesterol (LDL-C); high density lipoprotein-cholesterol (HDL-C) and total cholesterol (TC), iv) testosterone (T), v) liver alanine and aspartate aminotransferases (ALT and AST) and vi) erectile dysfunction (ED)...
June 21, 2017: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/28622980/how-do-hospital-respiratory-clinicians-perceive-antimicrobial-stewardship-ams-a-qualitative-study-highlighting-barriers-to-ams-in-respiratory-medicine
#5
J Broom, A Broom, E Kirby, A F Gibson, J J Post
BACKGROUND: Suboptimal antibiotic use in respiratory infections is widespread in hospital medicine and primary care. Antimicrobial stewardship (AMS) teams within hospitals, commonly led by infectious diseases physicians, are frequently charged with optimizing the use of respiratory antibiotics, but there is limited information on what drives antibiotic use in this area of clinical medicine, or on how AMS is perceived. AIM: To explore the perceptions of hospital respiratory clinicians on AMS in respiratory medicine...
May 5, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28622926/hominid-visitation-of-the-moravian-karst-during-the-middle-upper-paleolithic-transition-new-results-from-pod-hradem-cave-czech-republic
#6
L Nejman, R Wood, D Wright, L Lisá, Z Nerudová, P Neruda, A Přichystal, J Svoboda
In 1956-1958, excavations of Pod Hradem Cave in Moravia (eastern Czech Republic) revealed evidence for human activity during the Middle-Upper Paleolithic transition. This spanned 25,050-44,800 cal BP and contained artefacts attributed to the Aurignacian and Szeletian cultures, including those made from porcelanite (rarely used at Moravian Paleolithic sites). Coarse grained excavation techniques and major inversions in radiocarbon dates meant that site chronology could not be established adequately. This paper documents re-excavation of Pod Hradem in 2011-2012...
July 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28611814/mapping-and-preliminary-analysis-of-aborted-microspores-ams-as-the-candidate-gene-underlying-the-male-sterility-ms-5-mutant-in-melon-cucumis-melo-l
#7
Yunyan Sheng, Yudan Wang, Shiqi Jiao, Yazhong Jin, Peng Ji, Feishi Luan
Melon is an important agricultural and economic vegetable crop worldwide. The genetic male sterility mutant (ms-5) has a recessive nuclear gene that controls the male sterility germplasm. Male sterility could reduce the cost of F1 seed production in melon, but heterozygous fertile plants should be removed before pollination. In this study, bulked segregant analysis combined with specific length amplified fragment sequencing was applied to map the single nuclear male sterility recessive gene. A 30-kb candidate region on chromosome 9 located on scaffold 000048 and spanning 2,522,791 to 2,555,104 bp was identified and further confirmed by cleavage amplified polymorphic sequence markers based on parental line resequencing data and classical mapping of 252 F2 individuals...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28611780/il-10-dysregulation-in-acute-mountain-sickness-revealed-by-transcriptome-analysis
#8
Bao Liu, Jian Chen, Long Zhang, Yixing Gao, Jianhua Cui, Erlong Zhang, Gang Xu, Yan Liang, Yu Liang, Jian Wang, Yuqi Gao
Acute mountain sickness (AMS), which may progress to life-threatening high-altitude cerebral edema, is a major threat to millions of people who live in or travel to high altitude. Although studies have revealed the risk factors and pathophysiology theories of AMS, the molecular mechanisms of it do not comprehensively illustrate. Here, we used a system-level methodology, RNA sequencing, to explore the molecular mechanisms of AMS at genome-wide level in 10 individuals. After exposure to high altitude, a total of 1,164 and 1,322 differentially expressed transcripts were identified in AMS and non-AMS groups, respectively...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28609352/comparing-the-efficacy-of-triple-nerve-transfers-with-nerve-graft-reconstruction-in-upper-trunk-obstetrical-brachial-plexus-injury
#9
Kathleen M O'Grady, Hollie A Power, Jaret L Olson, Michael J Morhart, A Robertson Harrop, M Joe Watt, K Ming Chan
BACKGROUND: Upper trunk obstetrical brachial plexus injury (OBPI) can cause profound shoulder and elbow dysfunction. Although neuroma excision with interpositional sural nerve grafting is the current gold standard, distal nerve transfers have a number of potential advantages. The goal of this study was to compare the clinical outcomes and healthcare costs between nerve grafting and distal nerve transfers in children with upper trunk OBPI. METHODS: In this prospective cohort study, children who received triple nerve transfers were followed with the Active Movement Scale (AMS) for 2 years...
June 12, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28608289/-antibiotic-stewardship-a%C3%A2-programmatic-approach-to-improved-antimicrobial-management
#10
REVIEW
Martin Müller, Patrick Lehmann, Christian Willy
Due to the increasing selection and prevalence of multidrug-resistant gram-negative bacteria and the insufficient development of novel antibiotics, the responsible and prudent use of the available antimicrobial drugs is of major importance. In Germany the rational use of anti-infectives considering the local antimicrobial resistance situation is defined in the infection protection act of 2011. An important tool to follow legal regulations and to improve the treatment of bacterial infections is the antimicrobial stewardship (AMS) concept...
June 12, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28608136/early-impairment-of-intracranial-conduction-time-predicts-mortality-in-deeply-sedated-critically-ill-patients-a-prospective-observational-pilot-study
#11
Eric Azabou, Benjamin Rohaut, Nicholas Heming, Eric Magalhaes, Régine Morizot-Koutlidis, Stanislas Kandelman, Jeremy Allary, Guy Moneger, Andrea Polito, Virginie Maxime, Djillali Annane, Frederic Lofaso, Fabrice Chrétien, Jean Mantz, Raphael Porcher, Tarek Sharshar
BACKGROUND: Somatosensory (SSEP) and brainstem auditory (BAEP) evoked potentials are neurophysiological tools which, respectively, explore the intracranial conduction time (ICCT) and the intrapontine conduction time (IPCT). The prognostic values of prolonged cerebral conduction times in deeply sedated patients have never been assessed. Sedated patients are at risk of developing new neurological complications, undetected. In this prospective observational bi-center pilot study, we investigated whether early impairment of SSEP's ICCT and/or BAEP's IPCT could predict in-ICU mortality or altered mental status (AMS), in deeply sedated critically ill patients...
December 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28605960/heart-rate-heart-rate-variability-faecal-glucocorticoid-metabolites-and-avoidance-response-of-dairy-cows-before-and-after-changeover-to-an-automatic-milking-system
#12
Viktor Jurkovich, Fruzsina Luca Kézér, Ferenc Ruff, Mikolt Bakony, Margit Kulcsár, Levente Kovács
The heart rate variability (HRV) parameters of dairy cows were monitored during parlour (PARL) and the later installed automatic (AMS) milking on a small-scale commercial dairy farm in Hungary. The aim of the study was to assess stress in relation to the type of milking and the frequency of human interaction. Parlour milking involved regular moving and crowding of the animals with frequent human interaction, which were much less frequent in automatic milking. The first phase of the study was conducted prior to the changeover [n = 27] and the second two months afterwards [n = 19 (of the cows from the first phase)]...
June 2017: Acta Veterinaria Hungarica
https://www.readbyqxmd.com/read/28599193/organic-and-inorganic-speciation-of-particulate-matter-formed-during-different-combustion-phases-in-an-improved-cookstove
#13
Anna Leavey, Sameer Patel, Raul Martinez, Dhruv Mitroo, Claire Fortenberry, Michael Walker, Brent Williams, Pratim Biswas
Residential solid fuel combustion in cookstoves has established health impacts including bladder and lung cancers, cataracts, low birth weight, and pneumonia. The chemical composition of particulate matter (PM) from 4 commonly-used solid fuels (coal, dung, ambient/dry applewood, and oakwood pellets), emitted from a gasifier cookstove, as well as propane, were examined. Temporal changes between the different cookstove burn-phases were also explored. Normalized concentrations of non-refractory PM1, total organics, chloride, ammonium, nitrate, sulfate, and 41 particle-phase polycyclic aromatic hydrocarbons (PAHs) were measured using a High-Resolution Time-of-Flight Aerosol Mass Spectrometer (HR-ToF-AMS) and a Thermal desorption Aerosol Gas chromatograph (TAG), respectively...
June 6, 2017: Environmental Research
https://www.readbyqxmd.com/read/28598602/multi-actinide-analysis-with-ams-for-ultra-trace-determination-in-small-samples-application-to-an-in-situ-radionuclide-tracer-test-within-the-colloid-formation-and-migration-cfm-experiment-at-the-grimsel-test-site-gts-switzerland
#14
Francesca Quinto, Ingo Blechschmidt, Carmen Garcia Perez, Horst Geckeis, Frank Geyer, Robin Golser, Florian M Huber, Markus Lagos, Bill Lanyon, Markus Plaschke, Peter Steier, Thorsten Schäfer
The multi-actinide analysis with AMS was applied to samples collected from the run 13-05 of the Colloid Formation and Migration (CFM) experiment at the Grimsel test site (GTS). In this in situ radionuclide tracer test the environmental behavior of U-233, Np-237, Pu-242 and Am-243 was investigated in a water conductive shear zone under conditions relevant for a nuclear waste repository in crystalline rock. The concentration of the actinides in the GTS groundwater was determined with AMS over six orders of magnitude from ~15 pg/g down to ~25 ag/g...
June 9, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28598224/mesenchymal-stromal-cells-modulate-macrophages-in-clinically-relevant-lung-injury-models-by-extracellular-vesicle-mitochondrial-transfer
#15
Thomas J Morrison, Megan V Jackson, Erin K Cunningham, Adrien Kissenpfennig, Daniel F McAuley, Cecilia M O'Kane, Anna D Krasnodembskaya
RATIONALE: Acute Respiratory Distress Syndrome (ARDS) remains a major cause of respiratory failure in critically ill patients. Mesenchymal Stromal Cells (MSCs) are a promising candidate for a cell based therapy. However, the mechanisms of MSCs effects in ARDS are not well understood. Here we focused on the paracrine effect of MSCs on macrophage polarization and the role of extracellular vesicle (EV)-mediated mitochondrial transfer. OBJECTIVES: To determine the effects of human MSCs on macrophage function in the ARDS environment and to elucidate the mechanisms of these effects...
June 9, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28595349/prenatal-exposure-to-antimalarials-decreases-the-risk-of-cardiac-but-not-non-cardiac-neonatal-lupus-a-single-centre-cohort-study
#16
Julie Barsalou, Edgar Jaeggi, Carl A Laskin, Patrick Brown, Simon Y Tian, Robert M Hamilton, Earl D Silverman
Objective: . Recent studies have suggested that prenatal exposure to HCQ reduces the risk of cardiac neonatal lupus. The aim of this study is to assess if maternal intake of antimalarials (AMs) throughout pregnancy lowered the risk of cardiac and non-cardiac neonatal lupus. Methods: . Consecutive children seen between 1 January 1984 to 1 October 2013 born to women with a CTD and positive anti-Ro and/or anti-La antibodies were eligible for this single-centre retrospective cohort study...
June 8, 2017: Rheumatology
https://www.readbyqxmd.com/read/28595316/developing-a-local-antimicrobial-resistance-action-plan-the-cornwall-one-health-antimicrobial-resistance-group
#17
Neil Powell, Iain Davidson, Phillip Yelling, Andrew Collinson, Adam Pollard, Lisa Johnson, Nick Gibson, Jennifer Taylor, Kathryn Wisner, William Gaze, Janice South, Diane Ashiru-Oredope
Objectives: The UK Five Year Antimicrobial Resistance (AMR) Strategy was published in September 2013 and recommended a One Health approach emphasizing the importance of collaboration to tackle AMR. We describe the inauguration of what we believe to be the first regional One Health group established in the UK. The purpose of the group was to ensure the implementation of a coordinated Cornwall-wide response to the UK AMR Strategy and we describe the outputs of the group to date. Methods: The Cornwall Antimicrobial Resistance Group was set up as a sub-group of the Health & Wellbeing Board's Health Protection Committee...
June 7, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28593169/atherosclerosis-is-associated-with-erectile-function-and-lower-urinary-tract-symptoms-especially-nocturia-in-middle-aged-men
#18
Akira Tsujimura, Ippei Hiramatsu, Yusuke Aoki, Hirofumi Shimoyama, Taiki Mizuno, Taiji Nozaki, Masato Shirai, Kazuhiro Kobayashi, Yoshiaki Kumamoto, Shigeo Horie
BACKGROUND: Atherosclerosis is a systematic disease in which plaque builds up inside the arteries that can lead to serious problems related to quality of life (QOL). Lower urinary tract symptoms (LUTS), erectile dysfunction (ED), and late-onset hypogonadism (LOH) are highly prevalent in aging men and are significantly associated with a reduced QOL. However, few questionnaire-based studies have fully examined the relation between atherosclerosis and several urological symptoms. MATERIALS AND METHODS: The study comprised 303 outpatients who visited our clinic with symptoms of LOH...
June 2017: Prostate International
https://www.readbyqxmd.com/read/28587596/a-systematic-evaluation-of-nucleotide-properties-for-crispr-sgrna-design
#19
Pei Fen Kuan, Scott Powers, Shuyao He, Kaiqiao Li, Xiaoyu Zhao, Bo Huang
BACKGROUND: CRISPR is a versatile gene editing tool which has revolutionized genetic research in the past few years. Optimizing sgRNA design to improve the efficiency of target/DNA cleavage is critical to ensure the success of CRISPR screens. RESULTS: By borrowing knowledge from oligonucleotide design and nucleosome occupancy models, we systematically evaluated candidate features computed from a number of nucleic acid, thermodynamic and secondary structure models on real CRISPR datasets...
June 6, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/28580998/ambient-and-laboratory-observations-of-organic-ammonium-salts-in-pm1
#20
P Schlag, F Rubach, T F Mentel, D Reimer, F Canonaco, J S Henzing, M Moerman, R Otjes, A S H Prévôt, F Rohrer, B Rosati, R Tillmann, E Weingartner, A Kiendler-Scharr
Ambient measurements of PM1 aerosol chemical composition at Cabauw, the Netherlands, implicate higher ammonium concentrations than explained by the formation of inorganic ammonium salts. This additional particulate ammonium is called excess ammonium (eNH4). Height profiles over the Cabauw Experimental Site for Atmospheric Research (CESAR) tower, of combined ground based and airborne aerosol mass spectrometric (AMS) measurements on a Zeppelin airship show higher concentrations of eNH4 at higher altitudes compared to the ground...
June 5, 2017: Faraday Discussions
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