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https://www.readbyqxmd.com/read/28214604/the-measurement-of-dlno-and-dlco-a-manufacturer-s-perspective
#1
X Giraud, N N Le-Dong, K Hogben, J B Martinot
The simultaneous measurement of the lung transfer factor for carbon monoxide (DLCO) and nitric oxide (DLNO) is now available as a powerful method for studying the alveolar-capillary gas exchange. However, application of the DLNO-CO technique in daily settings is still limited by some technical drawbacks. This paper provides a manufacturer's overview of the measuring principles, technical challenges and current available solutions for implementing the DLNO-CO measurement in to a marketed device. This includes the recent developments in technology for NO sensors, latest findings on NO uptake and new statistical methods...
February 15, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28212489/direct-single-enzyme-biomineralization-of-catalytically-active-ceria-and-ceria-zirconia-nanocrystals
#2
Christopher D Curran, Li Lu, Yue Jia, Christopher J Kiely, Bryan W Berger, Steven McIntosh
Biomineralization is an intriguing approach to the synthesis of functional inorganic materials for energy applications whereby biological systems are engineered to mineralize inorganic materials and control their structure over multiple length scales under mild reaction conditions. Herein we demonstrate a single enzyme mediated biomineralization route to synthesize crystalline, catalytically active, quantum confined ceria (CeO2-x) and ceria-zirconia (Ce1-yZryO2-x) nanocrystals for application as environmental catalysts...
February 17, 2017: ACS Nano
https://www.readbyqxmd.com/read/28211949/internet-based-self-tailored-deposit-contracts-to-promote-smoking-reduction-and-abstinence
#3
Brantley P Jarvis, Jesse Dallery
Deposit contracting may reduce costs and increase efficacy in contingency management interventions. We evaluated two Internet-based deposit contract arrangements for smoking. In Experiment 1, nine participants deposited self-selected amounts that could be earned back for meeting goals. During treatment, participants were reimbursed for breath samples with less than or equal to 6 parts per million carbon monoxide and met the criterion for 47% of samples compared to 1% during baseline. In Experiment 2, 10 participants' deposits were matched up to $50...
February 17, 2017: Journal of Applied Behavior Analysis
https://www.readbyqxmd.com/read/28211271/allyl-fluorescein-ethers-as-promising-fluorescent-probes-for-carbon-monoxide-imaging-in-living-cells
#4
Shumin Feng, Dandan Liu, Weiyong Feng, Guoqiang Feng
Recently, the fluorescent detection of carbon monoxide (CO) in living cells has attracted great attention. However, due to the lack of effective ways to construct fluorescent CO probes, fluorescent detection of CO in living cells is still in its infancy. In this paper, we report for the first time of using allyl ether as reaction site for construction of fluorescent CO probes. By this way, two readily available allyl fluorescein ethers were prepared, which were found to be highly selective and sensitive probes for CO in the presence of PdCl2...
February 17, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28211212/palladium-catalyzed-oxidative-cascade-carbonylative-spirolactonization-of-enallenols
#5
Youai Qiu, Bin Yang, Tuo Jiang, Can Zhu, Jan-E Bäckvall
A highly selective palladium-catalyzed oxidative carbonylation/carbocyclization/alkoxycarbonylation of enallenols to afford spirolactones bearing an all-carbon quaternary center was developed. This transformation involves the overall formation of three C-C bonds and one C-O bond through a cascade insertion of carbon monoxide (CO), an olefin, and CO. Preliminary experiments on chiral anion-induced enantioselective carbonylation/carbocyclization of enallenols afforded spirolactones with moderate enantioselectivity...
February 17, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28209408/household-air-pollution-from-various-types-of-rural-kitchens-and-its-exposure-assessment
#6
Maninder Kaur Sidhu, Khaiwal Ravindra, Suman Mor, Siby John
Exposure to household air pollutants has become a leading environmental health risk in developing countries. Considering this, real-time temporal variation in fine particulate matter (PM2.5) and carbon monoxide (CO) concentrations were measured in various types of rural household kitchens. Observed average concentrations of PM2.5, CO, percent relative humidity (%RH) and temperature (T) in five different kitchen types were 549.6μg/m(3), 4.2ppm, 70.2% and 20°C respectively. Highest CO and PM2.5 concentration were found in household performing cooking in indoor kitchens (CO: 9...
February 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28209031/carbon-nanomaterial-formation-on-fresh-reduced-iron-by-converted-natural-gas
#7
A Nebesnyi, V Kotov, A Sviatenko, D Filonenko, A Khovavko, B Bondarenko
The mechanism of carbon nanomaterial formation at moderate temperatures while processing fresh-reduced iron by products of air conversion of natural gas is considered. It is shown that under given conditions, the size and the shape of the resulting carbon are dependent on the temperature and the size of microscopic iron grains formed during reduction. These iron grains are the catalyzer of the reaction of carbon monoxide disproportionation. It is concluded that the formation of a nucleus of the new carbon phase occurs at the contact boundaries of neighboring grains of newly reduced iron with the subsequent formation in these places of ring-shaped carbon cuffs...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28206992/heme-oxygenase-1-promoter-polymorphisms-do-they-modulate-neonatal-hyperbilirubinemia
#8
M Kaplan, R J Wong, D K Stevenson
The role of genetic factors in the modulation of serum bilirubin levels and the pathophysiology of neonatal hyperbilirubinemia is being increasingly recognized. Heme oxygenase-1 (HO-1) is the rate-limiting enzyme by which heme is catabolized to biliverdin and thence to bilirubin, with the simultaneous release of equimolar quantities of ferrous iron (Fe(3+)) and carbon monoxide. Polymorphisms of the HO-1 gene promoter may modulate transcriptional activity, thereby augmenting or attenuating HO-1 expression with resultant modulation of the production of bilirubin...
February 16, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28202783/evaluation-of-a-complex-healthcare-intervention-to-increase-smoking-cessation-in-pregnant-women-interrupted-time-series-analysis-with-economic-evaluation
#9
Ruth Bell, Svetlana V Glinianaia, Zelda van der Waal, Andrew Close, Eoin Moloney, Susan Jones, Vera Araújo-Soares, Sharon Hamilton, Eugene Mg Milne, Janet Shucksmith, Luke Vale, Martyn Willmore, Martin White, Steven Rushton
OBJECTIVES: To evaluate the effectiveness of a complex intervention to improve referral and treatment of pregnant smokers in routine practice, and to assess the incremental costs to the National Health Service (NHS) per additional woman quitting smoking. DESIGN: Interrupted time series analysis of routine data before and after introducing the intervention, within-study economic evaluation. SETTING: Eight acute NHS hospital trusts and 12 local authority areas in North East England...
February 15, 2017: Tobacco Control
https://www.readbyqxmd.com/read/28202239/vehicle-emission-trends-in-china-s-guangdong-province-from-1994-to-2014
#10
Yong-Hong Liu, Wen-Yuan Liao, Li Li, Yu-Ting Huang, Wei-Jia Xu
Exploring vehicle emission trends within and outside the Pearl River Delta (PRD) region during a long period was scientific and practical, for the economic rapid unbalanced development, continuous implements of severe reducing vehicle emissions measures in Guangdong province. Multi-year inventories of vehicle emissions from 1994 to 2014 were estimated based on the emissions factors of different emissions standards and vehicle kilometers travelled for all types of vehicles. The trends and characteristics of the emissions of carbon monoxide (CO), volatile organic compounds (VOCs), nitrogen oxides (NOx), fine particulate matter (PM2...
February 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28199450/association-between-smoking-status-preoperative-exhaled-carbon-monoxide-levels-and-postoperative-surgical-site-infection-in-patients-undergoing-elective-surgery
#11
Margaret B Nolan, David P Martin, Rodney Thompson, Darrell R Schroeder, Andrew C Hanson, David O Warner
Importance: Cigarette smoking is a risk factor for many perioperative complications, including surgical site infection (SSI). The duration of abstinence from smoking required to reduce this risk is unknown. Objectives: To evaluate if abstinence from smoking on the day of surgery is associated with a decreased frequency of SSI in patients who smoke cigarettes and to confirm that smoking is significantly independently associated with SSI when adjustment is made for potentially relevant covariates, such as body mass index...
February 15, 2017: JAMA Surgery
https://www.readbyqxmd.com/read/28198887/femtosecond-two-photon-planar-laser-induced-fluorescence-of-carbon-monoxide-in-flames
#12
Daniel R Richardson, Sukesh Roy, James R Gord
Two-photon, planar laser-induced fluorescence (TP-PLIF) of carbon monoxide was performed in steady and driven flames using femtosecond (fs) laser pulses at 1 kHz. Excitation radiation at 230.1 nm (full-width at half-maximum bandwidth of 270  cm<sup>-1</sup>) was used to pump many rovibrational two-photon transitions in the B<sup>1</sup>∑<sup>+</sup>←X<sup>1</sup>∑<sup>+</sup> system. Visible fluorescence in the range 362-516 nm was captured using an image intensifier and high-speed camera...
February 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28198571/pulmonary-mri-morphometry-modeling-of-airspace-enlargement-in-chronic-obstructive-pulmonary-disease-and-alpha-1-antitrypsin-deficiency
#13
Alexei Ouriadov, Eric Lessard, Khadija Sheikh, Grace Parraga
PURPOSE: We generated lung morphometry measurements using single-breath diffusion-weighted MRI and three different acinar duct models in healthy participants and patients with emphysema stemming from chronic obstructive lung disease (COPD) and alpha-1 antitrypsin deficiency (AATD). METHODS: Single-breath-inhaled (3) He MRI with five diffusion sensitizations (b-value = 0, 1.6, 3.2, 4.8, and 6.4 s/cm(2) ) was used, and signal intensities were fit using a cylindrical and single-compartment acinar-duct model to estimate MRI-derived mean linear intercept (Lm ) and surface-to-volume ratio (S/V)...
February 15, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28197938/clinical-efficacy-and-safety-of-bathing-with-chinese-medicine-taohong-siwu-decoction-for-treatment-of-diffuse-cutaneous-systemic-sclerosis-a-randomized-placebo-controlled-trial
#14
Jing Zhou, Dong Yang, Shu-Hong Zhou, Jin-Ping Wang, Yue-Shu Liu, Shu-Lan Wang
OBJECTIVE: To examine the efficacy and safety of bathing therapy with Taohong Siwu Decoction (, TSD) in the treatment of early-stage, mild-moderate diffuse cutaneous systemic sclerosis (dcSSc). METHODS: This randomized, placebo-controlled trial enrolled 148 men and women (18-60 years) with dcSSc (disease duration ≤12 months) and baseline modified Rodnan skin score (MRSS) ≥10. Patients were randomized into a TSD group (71 cases bathing with TSD plus oral prednisone) or control group (71 cases bathing with placebo plus oral prednisone)...
February 15, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28197581/effect-of-crystallite-size-on-the-performance-and-phase-transformation-of-co3o4-al2o3-catalysts-during-co-prox-an-in-situ-study
#15
Thulani M Nyathi, Nico Fischer, Andy P E York, Michael Claeys
The preferential oxidation of carbon monoxide has been identified as an effective route to remove trace amounts of CO (approx. 0.5-1.0 vol%) in the H2-rich reformate gas stream after the low-temperature water-gas shift. Instead of noble metal-based catalysts, Co3O4-based catalysts were investigated in this study as cheaper and more readily available alternatives. This study aimed at investigating the effect of crystallite size on the mass- and surface area-specific CO oxidation activity as well as on the reduction behaviour of Co3O4...
February 15, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28194083/asbestos-induced-lung-disease-in-small-scale-clutch-manufacturing-workers
#16
Dipti Gothi, Tanushree Gahlot, Ram B Sah, Mayank Saxena, U C Ojha, Anand K Verma, Sonam Spalgais
BACKGROUND: The crocidolite variety of asbestos is banned. However, chrysotile, which is not prohibited, is still used in developing countries in making products such as clutch plate. Fourteen workers from a small-scale clutch plate-manufacturing factory were analyzed for asbestos-induced lung disease as one of their colleagues had expired due to asbestosis. AIMS: This study was conducted to evaluate the awareness of workers, the prevalence and type of asbestos-induced lung disease, and the sensitivity and specificity of diffusion test...
May 2016: Indian Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28194034/high-pressure-carbon-monoxide-preserves-rat-kidney-grafts-from-apoptosis-and-inflammation
#17
Toyofumi Abe, Koji Yazawa, Masayuki Fujino, Ryoichi Imamura, Naoyuki Hatayama, Yoichi Kakuta, Koichi Tsutahara, Masayoshi Okumi, Naotsugu Ichimaru, Jun-Ya Kaimori, Yoshitaka Isaka, Kunihiro Seki, Shiro Takahara, Xiao-Kang Li, Norio Nonomura
Renal ischemia-reperfusion (I/R) injury is unavoidable in kidney transplantation (KTx) and frequently influences both short- and long-term allograft survival. Carbon monoxide (CO) has attracted attention as a medical gas with anti-inflammatory and anti-apoptotic effects. We investigated a new strategy for organ preservation using ex vivo application of high-pressure CO in an experimental rat KTx model. We preserved kidney grafts using a high-pressure chamber filled with mixed gases composed of CO and O2. We found that cold I/R injury resulted in progressive deterioration of renal graft function in University of Wisconsin solution, whereas CO significantly improved renal function...
February 13, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28191607/retrospective-study-of-the-clinical-characteristics-and-risk-factors-of-rheumatoid-arthritis-associated-interstitial-lung-disease
#18
Yongfeng Zhang, Hongbin Li, Nawei Wu, Xin Dong, Yi Zheng
This study aims to explore the clinical characteristics and risk factors of rheumatoid arthritis (RA)-associated interstitial lung disease (ILD). This is a retrospective study of 550 patients with RA. All patients underwent chest high-resolution computed tomography (HRCT) scanning. (1) Two hundred thirty-seven out of five hundred fifty (43.1%) patients with RA were diagnose with ILD. 13.5% ILD occurred before RA onset, 69.6% ILD occurred within 10 years of RA onset, and 16.9% ILD occurred more than 10 years after RA onset...
February 12, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28186648/the-recipient-s-heme-oxygenase-1-promoter-region-polymorphism-is-associated-with-cardiac-allograft-vasculopathy
#19
Kathrin Freystaetter, Martin Andreas, Martin Bilban, Thomas Perkmann, Alexandra Kaider, Marco Masetti, Alfred Kocher, Michael Wolzt, Andreas Zuckermann
BACKGROUND: Heme oxygenase-1 (HO-1) catalyses the degradation of heme to biliverdin, free iron and carbon monoxide. The promoter region contains a highly polymorphic (GT)n repeat, where shorter (GT)n repeat sequences are linked to higher transcriptional activity, which was shown to correlate with a cytoprotective effect. Higher HO-1 levels may protect from cardiac allograft vasculopathy. METHODS: Cardiac allograft recipients transplanted between 1988 and 2012 were analysed for the HO-1 (GT)n repeat polymorphism using PCR and DNA fragment analysis with capillary electrophoresis...
February 10, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28185963/increased-network-centrality-as-markers-of-relapse-risk-in-nicotine-dependent-individuals-treated-with-varenicline
#20
Zhujing Shen, Peiyu Huang, Chao Wang, Wei Qian, Yihong Yang, Minming Zhang
Identifying smokers at high risk of relapse could improve the effectiveness of cessation therapies. Although altered regional brain function in smokers has been reported, whether the whole-brain functional organization differs smokers with relapse vulnerability from others remains unclear. Thus, the goal of this study is to investigate the baseline functional connectivity differences between relapsers and quitters. Using resting-state fMRI, we acquired images from 57 smokers prior to quitting attempts. After 12-week treatment with varenicline, smokers were divided into relapsers (n=36) and quitters (n=21) (quitter: continuously abstinent for weeks 9-12)...
February 6, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
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