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Carbon monoxide

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https://www.readbyqxmd.com/read/28087341/lung-diffusing-capacity-in-sub-saharan-africans-versus-european-caucasians
#1
Bamodi Simaga, Kevin Forton, Yoshiki Motoji, Robert Naeije, Vitalie Faoro
Single breath measurements of lung diffusing capacity (DL) for carbon monoxide (CO) and nitric oxide (NO) were performed in age-, sex-, weight- and height-matched 32 Sub-Saharan Africans (13 women) and 32 Caucasian Europeans, and repeated in 14 of each group at 80% of maximum exercise capacity. In Africans versus Caucasians respectively, DLNO was 153±31 vs 176±38ml/mmHg/min at rest (P<0.001) and 210±48 vs 241±52ml/mmHg/min at exercise (P<0.01) while hemoglobin-adjusted DLCO was 29±6 vs 34±6ml/mmHg/min at rest (P<0...
January 10, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28086884/transfer-factor-for-carbon-monoxide-in-patients-with-copd-and-diabetes-results-from-the-german-cosyconet-cohort
#2
Kathrin Kahnert, Tanja Lucke, Frank Biertz, Andreas Lechner, Henrik Watz, Peter Alter, Robert Bals, Jürgen Behr, Rolf Holle, Rudolf M Huber, Stefan Karrasch, Beate Stubbe, Margarethe Wacker, Sandra Söhler, Emiel F M Wouters, Claus Vogelmeier, Rudolf A Jörres
BACKGROUND: An impairment of CO diffusing capacity has been shown in diabetic patients without lung disease. We analyzed how diffusing capacity in patients with COPD is affected by the concurrent diagnosis of diabetes. METHODS: Data from the initial visit of the German COPD cohort COSYCONET were used for analysis. 2575 patients with complete lung function data were included, among them 358 defined as diabetics with a reported physician diagnosis of diabetes and/or specific medication...
January 13, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28086844/are-risk-predicting-models-useful-for-estimating-survival-of-patients-with-rheumatoid-arthritis-associated-interstitial-lung-disease
#3
Hanna M Nurmi, Minna K Purokivi, Miia S Kärkkäinen, Hannu-Pekka Kettunen, Tuomas A Selander, Riitta L Kaarteenaho
BACKGROUND: Risk predicting models have been applied in idiopathic pulmonary fibrosis (IPF), but still not validated in patients with rheumatoid arthritis-associated interstitial lung disease (RA-ILD). The purpose of this study was to test the suitability of three prediction models as well as individual lung function and demographic factors for evaluating the prognosis of RA-ILD patients. METHODS: Clinical and radiological data of 59 RA-ILD patients was re-assessed...
January 13, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28081341/association-of-neutrophil-lymphocyte-ratio-with-the-degree-ofinterstitial-lung-disease-in-systemic-sclerosis
#4
Nurhan Atilla, Gözde Yıldırım Çetin, Ayşe Balkarlı
BACKGROUND/AIM: Determining the severity of systemic sclerosis related interstitial lung disease (SSc-ILD) is based on clinical and radiological findings, inflammation marker levels, and carbon monoxide diffusing capacity of the lung (DLCO). Recently studies are ongoing for objective and easy markers. Neutrophil/lymphocyte ratio (NLR) is shown to be a good marker for inflammation in recent clinical trials. In this study, we aimed to identify the possible relationship between NLR and carbon monoxide transfer coefficient (KCO) of SSc-ILD patients...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28081308/exhaled-carbon-monoxide-is-a-marker-of-heavy-nicotine-dependence
#5
Elif Babaoğlu, Ayşegül Karalezli, Mükremin Er, Hatice Canan Hasanoğlu, Derya Öztuna
BACKGROUND/AIM: Exhaled CO level provides an objective measure of a patient's smoking status. The relationship between CO levels and nicotine dependence is controversial. The aim of this study is to evaluate the relationship between exhaled CO levels and nicotine dependence as well as to demonstrate that exhaled CO levels may be used as a marker of nicotine dependence. MATERIALS AND METHODS: Two hundred eighty-nine patients (132 females, 157 males) were included in the study...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28079376/synthesis-structures-and-co-release-capacity-of-a-family-of-water-soluble-photocorms-assessment-of-the-biocompatibility-and-their-phototoxicity-toward-human-breast-cancer-cells
#6
Indranil Chakraborty, Samantha J Carrington, Graham Roseman, Pradip K Mascharak
Two manganese(I) carbonyl complexes derived from 2-(pyridyl)benzothiazole (pbt) and 1,10-phenanthroline (phen) release carbon monoxide (CO) under low-power broad-band visible-light illumination. CO photorelease from [Mn(CO)3(pbt)(PTA)]CF3SO3 (1, where PTA = 1,3,5-triaza-7-phosphaadamantane) is accompanied by an emergence of a strong fluorescence around 400 nm from almost nonfluorescent preirradiated 1. However, [Mn(CO)3(phen)(PTA)]CF3SO3 (2) showed no such phenomenon upon prolonged illumination under similar experimental conditions...
January 12, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28077358/biological-signaling-by-carbon-monoxide-and-carbon-monoxide-releasing-molecules-co-rms
#7
Roberto Motterlini, Roberta Foresti
Carbon monoxide (CO) is continuously produced in mammalian cells during degradation of heme. It is a stable gaseous molecule that reacts selectively with transition metals in a specific redox state and these characteristics restrict the interaction of CO with defined biological targets that transduce its signaling activity. Because of the high affinity of CO for ferrous heme, these targets can be grouped into heme-containing proteins, representing a large variety of sensors and enzymes with a series of diverse function in the cell and the organism...
January 11, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28077163/the-efficacy-of-varenicline-in-achieving-abstinence-among-waterpipe-tobacco-smokers-study-protocol-for-a-randomized-controlled-trial
#8
Raana Zahid, Omara Dogar, Sonia Mansoor, Amina Khan, Mona Kanaan, Mohammed Jawad, Jasjit S Ahluwalia, Kamran Siddiqi
BACKGROUND: Waterpipe tobacco smoking has increased among youth across the globe including in the US, and it continues as a common and traditional form of smoking tobacco in Pakistan. A range of behavioral and pharmacological therapies are available to support people in quitting cigarette smoking; however, little evidence exists for the efficacy of these therapies in achieving abstinence among waterpipe tobacco smokers. The objective of this study is to assess the efficacy of varenicline when added to behavioral support for waterpipe tobacco smoking cessation, by measuring biochemically validated continuous abstinence in waterpipe tobacco smokers...
January 11, 2017: Trials
https://www.readbyqxmd.com/read/28069367/co-variability-and-its-association-with-household-cooking-fuels-consumption-over-the-indo-gangetic-plains
#9
Alok Kumar Pandey, Amit Kumar Mishra, Ritesh Kumar, Shivesh Berwal, Rakhesh Devadas, Alfredo Huete, Krishan Kumar
This study examines the spatio-temporal trends obtained from decade long (Jan 2003-Dec 2014) satellite observational data of Atmospheric Infrared Sounder (AIRS) and Measurements of Pollution in the Troposphere (MOPITT) on carbon monoxide (CO) concentration over the Indo-Gangetic Plains (IGP) region. The time sequence plots of columnar CO levels over the western, central and eastern IGP regions reveal marked seasonal behaviour, with lowest CO levels occurring during the monsoon months and the highest CO levels occurring during the pre-monsoon period...
January 6, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28068782/gasotransmitter-heterocellular-signaling
#10
Gopi Kolluru, Shuai Yuan, XInggui Shen, Christopher G Kevil
SIGNIFICANCE: The family of gasotransmitter molecules nitric oxide (NO), carbon monoxide (CO), and hydrogen sulfide (H2S), has emerged as important mediators of numerous cellular signal transduction and pathophysiological responses. As such, these molecules have been reported to influence a diverse array of biochemical, molecular, and cell biology events often impacting one another. Recent Advances: Discrete regulation of gasotransmitter molecule formation, movement, and reaction are critical to their biological function...
January 9, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28067788/mixed-potential-gas-sensors-using-an-electrolyte-consisting-of-zinc-phosphate-glass-and-benzimidazole
#11
Takafumi Akamatsu, Toshio Itoh, Woosuck Shin
Mixed-potential gas sensors with a proton conductor consisting of zinc metaphosphate glass and benzimidazole were fabricated for the detection of hydrogen produced by intestinal bacteria in dry and humid air. The gas sensor consisting of an alumina substrate with platinum and gold electrodes showed good response to different hydrogen concentrations from 250 parts per million (ppm) to 25,000 ppm in dry and humid air at 100-130 °C. The sensor response varied linearly with the hydrogen and carbon monoxide concentrations due to mass transport limitations...
January 5, 2017: Sensors
https://www.readbyqxmd.com/read/28067786/impact-of-air-pollutants-on-outpatient-visits-for-acute-respiratory-outcomes
#12
Ran Li, Ning Jiang, Qichen Liu, Jing Huang, Xinbiao Guo, Fan Liu, Zhancheng Gao
The air pollution in China is a severe problem. The aim of our study was to investigate the impact of air pollutants on acute respiratory outcomes in outpatients. Outpatient data from 2 December 2013 to 1 December 2014 were collected, as well as air pollutant data including ozone (O₃), nitrogen dioxide (NO₂), carbon monoxide (CO), sulfur dioxide (SO₂), and particulate matter (PM2.5 and PM10). We screened six categories of acute respiratory outcomes and analyzed their associations with different air pollutant exposures, including upper respiratory tract infection (URTI), acute bronchitis (AB), community-acquired pneumonia (CAP), acute exacerbation of chronic obstructive pulmonary disease (AECOPD), acute exacerbation of asthma (AE-asthma), and acute exacerbation of bronchiectasis (AEBX)...
January 5, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28065777/protective-effects-of-petroleum-ether-extracts-of-herpetospermum-caudigerum-against-%C3%AE-naphthylisothiocyanate-induced-acute-cholestasis-of-rats
#13
Wen-Rui Cao, Jing-Qiu Ge, Xin Xie, Meng-Lin Fan, Xu-Dong Fan, Hong Wang, Zhao-Yue Dong, Zhi-Hua Liao, Xiao-Zhong Lan, Min Chen
ETHNOPHARMACOLOGICAL RELEVANCE: The ripe seeds of Herpetospermum caudigerum have been used in Tibetan folk medicine for treatment of bile or liver diseases including jaundice, hepatitis, intumescences or inflammation. Previously reports suggested that the seed oil and some lignans from H. caudigerum exhibited protective effects against carbon tetrachloride (CCl4)-induced hepatic damage in rats, which may be related to their free radical scavenging effect. However, the protective effect of H...
January 5, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28062648/dual-chemistry-catalyzed-by-human-acireductone-dioxygenase
#14
Aditi R Deshpande, Thomas C Pochapsky, Gregory A Petsko, Dagmar Ringe
Acireductone dioxygenase (ARD) from the methionine salvage pathway of Klebsiella oxytoca is the only known naturally occurring metalloenzyme that catalyzes different reactions in vivo based solely on the identity of the divalent transition metal ion (Fe(2+) or Ni(2+)) bound in the active site. The iron-containing isozyme catalyzes the cleavage of substrate 1,2-dihydroxy-3-keto-5-(thiomethyl)pent-1-ene (acireductone) by O2 to formate and the ketoacid precursor of methionine, whereas the nickel-containing isozyme uses the same substrates to catalyze an off-pathway shunt to form methylthiopropionate, carbon monoxide and formate...
January 5, 2017: Protein Engineering, Design & Selection: PEDS
https://www.readbyqxmd.com/read/28060545/safety-and-immunogenicity-of-adenovirus-35-tb-vaccine-candidate-in-adults-with-active-or-previous-tb-a-randomized-trial
#15
Richard N van Zyl-Smit, Aliasgar Esmail, Mary E Bateman, Rodney Dawson, Jonathan Goldin, Eva van Rikxoort, Macaya Douoguih, Maria Grazia Pau, Jerald C Sadoff, J Bruce McClain, Margaret Ann Snowden, Jacqueline Benko, David A Hokey, Kathryn Tucker Rutkowski, Andrew Graves, Barbara Shepherd, Sadritdin Ishmukhamedov, Benjamin M N Kagina, Brian Abel, Willem A Hanekom, Thomas J Scriba, Eric D Bateman
RATIONALE: Administration of tuberculosis vaccines in participants with previous or current pulmonary tuberculosis may have the potential for causing harmful post-vaccination immunological (Koch-type) reactions. OBJECTIVES: To assess the safety and immunogenicity of three dose levels of the AERAS-402 live, replication-deficient adenovirus 35-vectored tuberculosis candidate vaccine, containing three mycobacterial antigens, in individuals with current or previous pulmonary tuberculosis...
January 6, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28060518/in-use-emissions-and-estimated-impacts-of-traditional-natural-and-forced-draft-cookstoves-in-rural-malawi
#16
Roshan Wathore, Kevin Mortimer, Andrew P Grieshop
Emissions from traditional cooking practices in low- and middle-income countries have detrimental health and climate effects; cleaner-burning cookstoves may provide "co-benefits". Here we assess this potential via in-home measurements of fuel-use and emissions and real-time optical properties of pollutants from traditional and alternative cookstoves in rural Malawi. Alternative cookstove models were distributed by existing initiatives and include a low-cost ceramic model, two forced-draft cookstoves (FDCS; Philips™ HD4012LS and ACE-1), and several institutional cookstoves...
January 6, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28058414/adsorption-of-co-on-the-rutile-tio2-110-surface-a-dispersion-corrected-density-functional-theory-study
#17
João P Prates Ramalho, Francesc Illas, José R B Gomes
The geometry, energy and stretching frequency of carbon monoxide on the rutile TiO2(110) surface for coverages between 0.125 and 1.5 ML are investigated by means of density functional theory calculations. Four different approaches were considered, namely, the PBE exchange-correlation functional and the PBE-D2, vdW-DF and vdW-DF2 methods incorporating van der Waals dispersion interactions of different theoretical complexity and empiricism. It is found that upon the increase of the surface coverage, the adsorption becomes less favorable due to lateral destabilizing interactions between adsorbed molecules...
January 6, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28057188/hydrogen-sulfide-as-a-double-faced-compound-one-with-pro-and-antioxidant-effect
#18
B Olas
Hydrogen sulfide (H2S), like other gasotransmitters such as nitric oxide (NO(•)) and carbon monoxide (CO), acts as a signaling molecule in various biological systems. It may also regulate the oxidative stress observed in several diseases sometimes associated with changes of H2S concentration. This chapter describes the "double face" of hydrogen sulfide as both an antioxidant and a prooxidant in biological systems. One proposed mechanism by which H2S exerts its antioxidative effects is its ability to modulate the concentration of glutathione, which is a very important physiological antioxidant...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28054978/hemoglobin-based-blood-substitutes-and-the-treatment-of-sickle-cell-disease-more-harm-than-help
#19
REVIEW
Abdu I Alayash
Intense efforts have been made by both industry and academia over the last three decades to produce viable hemoglobin (Hb)-based oxygen carriers (HBOCs), also known as "blood substitutes". Human trials conducted so far by several manufactures in a variety of clinical indications, including trauma, and elective surgeries have failed and no product has gained the Food and Drug Administration approval for human use. Safety concerns due to frequent incidences of hemodynamic, cardiac events, and even death led to the termination of some of these trials...
January 4, 2017: Biomolecules
https://www.readbyqxmd.com/read/28053522/do-nanoparticles-provide-a-new-opportunity-for-diagnosis-of-distal-airspace-disease
#20
Jakob Löndahl, Jonas Kf Jakobsson, David M Broday, H Laura Aaltonen, Per Wollmer
There is a need for efficient techniques to assess abnormalities in the peripheral regions of the lungs, for example, for diagnosis of pulmonary emphysema. Considerable scientific efforts have been directed toward measuring lung morphology by studying recovery of inhaled micron-sized aerosol particles (0.4-1.5 µm). In contrast, it is suggested that the recovery of inhaled airborne nanoparticles may be more useful for diagnosis. The objective of this work is to provide a theoretical background for the use of nanoparticles in measuring lung morphology and to assess their applicability based on a review of the literature...
2017: International Journal of Nanomedicine
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