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https://www.readbyqxmd.com/read/29779154/the-effect-of-meteorological-conditions-and-air-pollution-on-the-occurrence-of-type-a-and-b-acute-aortic-dissections
#1
Nan Xie, Liqun Zou, Lei Ye
To explore the association of weather conditions and air pollutants with incidence risk of acute aortic dissection (AAD), we included patients who consecutively admitted to the emergency units of our hospital for AAD between Dec. 1, 2013, and Apr. 30, 2017. Their medical records were reviewed. The meteorological data (daily precipitation, minimal and maximal temperatures, mean atmospheric pressure, relative humidity) and air pollutants values [air daily index (AQI), aerodynamic diameter of 2.5 mm or less (PM2...
May 19, 2018: International Journal of Biometeorology
https://www.readbyqxmd.com/read/29777655/long-term-outcomes-in-systemic-sclerosis-associated-pulmonary-arterial-hypertension-from-the-pulmonary-hypertension-assessment-and-recognition-of-outcomes-in-scleroderma-registry-pharos
#2
Kathleen D Kolstad, Shufeng Li, Virginia Steen, Lorinda Chung
BACKGROUND: Pulmonary arterial hypertension (PAH) is a leading cause of death in patients with systemic sclerosis (SSc). The purpose of this study was to assess long-term outcomes in patients with SSc-PAH. METHODS: Pulmonary Hypertension Assessment and Recognition of Outcomes in Scleroderma is a prospective registry of SSc patients at high risk for or with incident pulmonary hypertension based on right heart catheterization (RHC). Incident World Health Organization Group I PAH patients were analyzed...
May 16, 2018: Chest
https://www.readbyqxmd.com/read/29775959/adolescent-smokers-response-to-reducing-the-nicotine-content-of-cigarettes-acute-effects-on-withdrawal-symptoms-and-subjective-evaluations
#3
Rachel N Cassidy, Suzanne M Colby, Jennifer W Tidey, Kristina M Jackson, Patricia A Cioe, Suchitra Krishnan-Sarin, Dorothy Hatsukami
BACKGROUND: Mandating a reduction in the nicotine content of cigarettes to a minimally addictive level could dramatically reduce smoking rates in the US. However, little is known about the effects of reduced nicotine content cigarettes in adolescents. METHODS: Following overnight abstinence, adolescent daily smokers (ages 15-19, n = 50) reported on their craving, withdrawal, and positive and negative affect pre- and post- ad lib smoking of one cigarette containing varying nicotine content (15...
May 15, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29773749/co-2-electroreduction-to-ethylene-via-hydroxide-mediated-copper-catalysis-at-an-abrupt-interface
#4
Cao-Thang Dinh, Thomas Burdyny, Md Golam Kibria, Ali Seifitokaldani, Christine M Gabardo, F Pelayo García de Arquer, Amirreza Kiani, Jonathan P Edwards, Phil De Luna, Oleksandr S Bushuyev, Chengqin Zou, Rafael Quintero-Bermudez, Yuanjie Pang, David Sinton, Edward H Sargent
Carbon dioxide (CO2 ) electroreduction could provide a useful source of ethylene, but low conversion efficiency, low production rates, and low catalyst stability limit current systems. Here we report that a copper electrocatalyst at an abrupt reaction interface in an alkaline electrolyte reduces CO2 to ethylene with 70% faradaic efficiency at a potential of -0.55 volts versus a reversible hydrogen electrode (RHE). Hydroxide ions on or near the copper surface lower the CO2 reduction and carbon monoxide (CO)-CO coupling activation energy barriers; as a result, onset of ethylene evolution at -0...
May 18, 2018: Science
https://www.readbyqxmd.com/read/29773707/comparison-of-toxicant-load-from-waterpipe-and-cigarette-tobacco-smoking-among-young-adults-in-the-usa
#5
Brian A Primack, Ariel Shensa, Jaime E Sidani, Megan C Tulikangas, Mark S Roberts, Jason B Colditz, Maria K Mor, A Everette James, Michael J Fine
OBJECTIVES: To form population-level comparisons of total smoke volume, tar, carbon monoxide and nicotine consumed from waterpipe tobacco smoking (WTS) and cigarette smoking using data from a nationally representative sample of smokers and non-smokers aged 18-30 years. METHODS: In March and April 2013, we surveyed a nationally representative sample of 3254 US young adults to assess the frequency and volume of WTS and cigarette smoking. We used Monte Carlo analyses with 5000 repetitions to estimate the proportions of toxicants originating from WTS and cigarette smoking...
May 16, 2018: Tobacco Control
https://www.readbyqxmd.com/read/29772541/myeloid-heme-oxygenase-1-a-new-therapeutic-target-in-anti-inflammation
#6
Mingyi Zhao, Minghua Yang, Weitao Que, Lin Zhong, Masayuki Fujino, Xiao-Kang Li
An increasing amount of evidence reveals that an orchestrated interplay between myeloid subpopulations in the hematopoietic system plays a significant role in supporting normal functions of the immune system and facilitating homeostatic restoration upon exogenous or endogenous insults. Heme oxygenase-1 (HO-1), a microsomal enzyme discovered decades ago, can metabolize pro-oxidant heme into biliverdin, free iron, and carbon monoxide. This enzymatic reaction produces biological materials, contributing to major immunomodulatory effects...
June 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/29771706/accidental-carbon-monoxide-poisoning-while-driving-a-case-report-with-review-of-the-literature
#7
Amanda O Fisher-Hubbard, Colin Appleford, Kilak Kesha, Carl J Schmidt, Avneesh Gupta
Carbon monoxide (CO) is the cause of a significant percentage of fatal poisonings in many countries. It is known that fatalities resulting from CO poisoning are underreported and/or misclassified. Carbon monoxide exposure while driving can occur due to faulty exhaust systems, defective ventilation systems, emission from other vehicles, and even cigarette smoking. We report the case of a 23-year-old woman who was involved in a low-speed motor vehicle collision and was found unresponsive in her vehicle due to CO poisoning...
May 16, 2018: American Journal of Forensic Medicine and Pathology
https://www.readbyqxmd.com/read/29770194/clinical-utility-of-hyperbaric-oxygen-therapy-in-genitourinary-medicine
#8
REVIEW
Jason Gandhi, Omar Seyam, Noel L Smith, Gunjan Joshi, Sohrab Vatsia, Sardar Ali Khan
Hyperbaric oxygen therapy (HBOT) is a medical technique which delivers oxygen at ambient pressures to increase the amount of dissolved oxygen in the blood and oxygen distribution to tissues. There are several beneficial properties of HBOT concomitant with elevated oxygen distribution in tissue including anti-inflammation, angiogenesis through vascular endothelial growth factor proliferation, augmented fibroblast activity through fibroblast growth factor proliferation, tissue and wound repair, enhancement of lymphocyte and macrophage activity, increased male testosterone secretion, and bactericidal activity...
January 2018: Medical Gas Research
https://www.readbyqxmd.com/read/29769294/pulmonary-function-tests-as-outcomes-for-systemic-sclerosis-interstitial-lung-disease
#9
REVIEW
Melissa Caron, Sabrina Hoa, Marie Hudson, Kevin Schwartzman, Russell Steele
Interstitial lung disease (ILD) is the leading cause of morbidity and mortality in systemic sclerosis (SSc). We performed a systematic review to characterise the use and validation of pulmonary function tests (PFTs) as surrogate markers for systemic sclerosis-associated interstitial lung disease (SSc-ILD) progression.Five electronic databases were searched to identify all relevant studies. Included studies either used at least one PFT measure as a longitudinal outcome for SSc-ILD progression ( i.e. outcome studies) and/or reported at least one classical measure of validity for the PFTs in SSc-ILD ( i...
June 30, 2018: European Respiratory Review: An Official Journal of the European Respiratory Society
https://www.readbyqxmd.com/read/29768275/predictive-factors-for-the-long-term-deterioration-of-pulmonary-function-in-interstitial-lung-disease-associated-with-anti-aminoacyl-trna-synthetase-antibodies
#10
Hideaki Yamakawa, Eri Hagiwara, Hideya Kitamura, Tae Iwasawa, Ryota Otoshi, Naoto Aiko, Takuma Katano, Ryota Shintani, Satoshi Ikeda, Ryo Okuda, Akimasa Sekine, Tomohisa Baba, Shinichiro Iso, Kazuyoshi Kuwano, Shinji Sato, Takashi Ogura
BACKGROUND: Little has been reported on long-term pulmonary function trends among patients with interstitial lung disease associated with anti-aminoacyl-tRNA synthetase antibodies (ARS-ILD). OBJECTIVES: To clarify the factors predictive of progression in ARS-ILD based on patients' initial clinical and radiological features. METHODS: The clinical courses of 88 patients with > 1 year of follow-up data on pulmonary function tests (PFTs) were retrospectively analyzed...
May 16, 2018: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/29767518/turn-on-and-turn-off-fluorescent-probes-for-carbon-monoxide-detection-and-blood-carboxyhemoglobin-determination
#11
Genggongwo Shi, Taeseung Yoon, Seoncheol Cha, Seulgi Kim, Muhammad Yousuf, Nisar Ahmed, Doseok Kim, Hyun-Wook Kang, Kwang S Kim
Water-soluble, carbazole-based two-photon excitable fluorescent probes MPVC-I ("turn-on") and MPVC-II ("turn-off") are rationally designed and synthesized for the selective monitoring of carbon monoxide (CO). Both probes can effectively measure carboxyhemoglobin (HbCO) in the blood of the animals exposed to a CO dose as low as 100 ppm for 10 min. The palladium catalyzed azidocarbonylation reaction was optimized to improve the sensing efficiency.
May 16, 2018: ACS Sensors
https://www.readbyqxmd.com/read/29766615/barriers-and-facilitators-to-smoking-cessation-in-pregnancy-and-in-the-post-partum-period-the-health-care-professionals-perspective
#12
Felix Naughton, Sarah Hopewell, Lesley Sinclair, Dorothy McCaughan, Jennifer McKell, Linda Bauld
OBJECTIVES: Health care professionals and the health care environment play a central role in protecting pregnant and post-partum women and their infants from smoking-related harms. This study aimed to better understand the health professional's perspective on how interactions between women, health care professionals, and the environment influence how smoking is managed. DESIGN: Semi-structured interviews and focus groups. METHODS: Data were from 48 health care staff involved in antenatal or post-partum care at two UK sites, including midwives, obstetricians, health visitors, GPs, pharmacists, service commissioners, and Stop Smoking Service (SSS) advisors and managers...
May 15, 2018: British Journal of Health Psychology
https://www.readbyqxmd.com/read/29765933/a-pilot-study-of-inhaled-co-therapy-in-neonatal-hypoxia-ischemia-carboxyhemoglobin-concentrations-and-brain-volumes
#13
Martha Douglas-Escobar, Monique Mendes, Candace Rossignol, Nikolay Bliznyuk, Ariana Faraji, Abdullah S Ahmad, Sylvain Doré, Michael D Weiss
Objective: The objective of this pilot study was to start evaluating the efficacy and the safety (i.e., carboxyhemoglobin concentration of carbon monoxide (CO)) as a putative neuroprotective therapy in neonates. Study Design: Neonatal C57BL/6 mice were exposed to CO at a concentration of either 200 or 250 ppm for a period of 1 h. The pups were then sacrificed at 0, 10, 20, 60, 120, 180, and 240 min after exposure to either concentration of CO, and blood was collected for analysis of carboxyhemoglobin. Following the safety study, 7-day-old pups underwent a unilateral carotid ligation...
2018: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29764545/-effects-of-n-butylphthalide-on-the-expressions-of-zo-1-and-claudin-5-in-blood-brain-barrier-of-rats-with-acute-carbon-monoxide-poisoning
#14
Li Wang, Xiaoyu Ding, Mingjun Bi, Jinglin Wang, Yong Zou, Jiyou Tang, Qin Li
OBJECTIVE: To explore the effects of N-butylphthalide on the expressions of ZO-1 and claudin-5 in blood-brain barrier (BBB) in rats with acute carbon monoxide (CO) poisoning. METHODS: A total of 144 adult healthy male Sprague-Dawley (SD) rats were randomly divided into normal control group, CO poisoning group, and NBP treatment group, with 48 rats in each group. The acute CO poisoning model was reproduced in hyperbaric oxygen chamber, and all model rats were given hyperbaric oxygen therapy once daily...
May 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29763801/bubble-coalescence-suppression-driven-carbon-monoxide-co-water-mass-transfer-increase-by-electrolyte-addition-in-a-hollow-fiber-membrane-bioreactor-hfmbr-for-microbial-co-conversion-to-ethanol
#15
Nulee Jang, Muhammad Yasin, Hyunsoo Kang, Yeubin Lee, Gwon Woo Park, Shinyoung Park, In Seop Chang
This study investigated the effects of electrolytes (CaCl2 , K2 HPO4 , MgSO4 , NaCl, and NH4 Cl) on CO mass transfer and ethanol production in a HFMBR. The hollow fiber membranes (HFM) were found to generate tiny gas bubbles; the bubble coalescence was significantly suppressed in electrolyte solution. The volumetric gas-liquid mass transfer coefficients (kL a) increased up to 414% compared to the control. Saturated CO (C∗ ) decreased as electrolyte concentrations increased. Overall, the maximum mass transfer rate (Rmax ) in electrolyte solution ranged from 106% to 339% of the value obtained in water...
May 4, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29762849/effects-of-smoking-on-thiol-disulfide-homeostasis
#16
I Solak, C D Cetinkaya, Y T Gederet, B Kozanhan, O Erel, M A Eryilmaz
OBJECTIVE: Cigarette smoking is an important risk factor for many diseases. This study aimed to evaluate whether cigarette smoking is associated with changes in the thiol/disulfide homeostasis (TDH), a novel biomarker of systemic oxidative stress. PATIENTS AND METHODS: Eighty-four smokers and 86 non-smoking healthy volunteers were enrolled. Serum native thiol, disulfide and total thiol levels, disulfide/native thiol, disulfide/total thiol, and native thiol/total thiol ratios were analyzed using a new colorimetric method...
April 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29762011/strategies-toward-organic-carbon-monoxide-prodrugs
#17
Xingyue Ji, Binghe Wang
Carbon monoxide is widely acknowledged as an important gasotransmitter in the mammalian system with importance on par with that of nitric oxide. It has also been firmly established as a potential therapeutic agent with a wide range of indications including organ transplantation, cancer, bacterial infection, and inflammation-related conditions such as colitis and sepsis. One major issue in developing CO based therapeutics is its delivery in a pharmaceutically acceptable form. Currently, there are generally five forms of deliveries: inhaled CO, photosensitive CO-releasing molecules, encapsulated CO, CO dissolved in drinks, and molecules that would release CO under physiological conditions without the need for light...
May 15, 2018: Accounts of Chemical Research
https://www.readbyqxmd.com/read/29761693/the-story-of-ever-diminishing-vehicle-tailpipe-emissions-as-observed-in-the-chicago-illinois-area
#18
Gary A Bishop, Molly J Haugen
The University of Denver has collected on-road fuel specific vehicle emissions measurements in the Chicago area since 1989. This nearly 30 year record illustrates the large reductions in light-duty vehicle tailpipe emissions and the remarkable improvements in emissions control durability to maintain low emissions over increasing periods of time. Since 1989 fuel specific carbon monoxide (CO) emissions have been reduced by an order of magnitude and hydrocarbon (HC) emissions by more than a factor of 20. Nitric oxide (NO) emissions have only been collected since 1997 but have seen reductions of 79%...
May 15, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29761622/host-heme-oxygenase-1-friend-or-foe-in-tackling-pathogens
#19
REVIEW
Nisha Singh, Zeeshan Ahmad, Navin Baid, Ashwani Kumar
Infectious diseases are a major challenge in management of human health worldwide. Recent literature suggests that host immune system could be modulated to ameliorate the pathogenesis of infectious disease. Heme oxygenase (HMOX1) is a key regulator of cellular signaling and it could be modulated using pharmacological reagents. HMOX1 is a cytoprotective enzyme that degrades heme to generate carbon monoxide (CO), biliverdin, and molecular iron. CO and biliverdin (or bilirubin derived from it) can restrict the growth of a few pathogens...
May 14, 2018: IUBMB Life
https://www.readbyqxmd.com/read/29761254/catroxmp-ii-a-heme-modulated-fibrinogenolytic-metalloproteinase-isolated-from-crotalus-atrox-venom
#20
Montamas Suntravat, Paul R Langlais, Elda E Sánchez, Vance G Nielsen
It has been recently demonstrated that the hemotoxic venom activity of several species of snakes can be inhibited by carbon monoxide (CO) or a metheme forming agent. These and other data suggest that the biometal, heme, may be attached to venom enzymes and may be modulated by CO. A novel fibrinogenolytic metalloproteinase, named CatroxMP-II, was isolated and purified from the venom of a Crotalus atrox viper, and subjected to proteolysis and mass spectroscopy. An ion similar to the predicted singly charged m/z of heme at 617...
May 14, 2018: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
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