keyword
MENU ▼
Read by QxMD icon Read
search

inhalational agents

keyword
https://www.readbyqxmd.com/read/29046490/exposure-to-airborne-endotoxin-in-italian-greenhouses-environmental-analyses
#1
Angela Gioffrè, Antonella Marramao, Ignazio DI Gesu, Pasquale Samele, Emilia Paba, Anna Marcelloni, Alessandra Chiominto, Sergio Iavicoli
The peculiar characteristics of the greenhouses as confined spaces, microclimate and poor air exchange with the outside environment, encourage the development of a large number of biological agents. Endotoxin, is probably a major causative agent of occupational health problems. The objective of this study was to measure the concentrations of airborne endotoxin in greenhouses with different cultures. The influence of microclimate was studied in correlation with endotoxin levels and type of cultured vegetables...
October 19, 2017: Industrial Health
https://www.readbyqxmd.com/read/29043904/effects-of-anesthesia-with-nitrous-oxide-on-tympanoplasty-outcomes-a-randomized-controlled-trial
#2
Ali Kouhi, Fatemeh Hajimohammadi, Sasan Dabiri, Amin Amali, Neda Enayati, Sahar Manavi, Niloufar Saeedi, Ziba Bidar
OBJECTIVES: To investigate effects of nitrous oxide (N2O), as inhalational anesthetic agent, on tympanoplasty outcomes. METHODS: In this randomized controlled trial, patients were randomized into two groups: 39 patients who received N2O as an inhalant anesthesia and 47 patients who did not receive. All were operated on with standard type of ear surgery. The protocol for the two groups was identical. Before surgery baseline audiometry was performed. Postoperative audiological controls were carried out at 3 months...
October 18, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/29043089/dermal-and-neural-toxicity-caused-by-acrylamide-exposure-in-two-korean-grouting-workers-a-case-report
#3
Heeyun Kim, Sang Gil Lee, Jeongbae Rhie
BACKGROUND: Peripheral neuritis caused by acrylamide is well-known, and many Korean grouting workers are frequently exposed to acrylamide in grouting agents that are injected into cracked concrete. We recently encountered two cases of dermal and neural toxicity in Korean grouting workers with exposure to grouting agents that contained a high concentration of acrylamide. CASE PRESENTATION: The first case involved a 44-year-old man with 8 years of waterproofing experience...
2017: Annals of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29042977/contrast-enhanced-ultrasound-with-a-novel-nanoparticle-contrast-agent-for-clinical-diagnosis-in-patients-with-non-small-cell-lung-cancer
#4
Na Li, Lu Han, Hui Jing
Non-small cell lung cancer (NSCLC) initiates in the non-small cells of the lung and is one of the most common types of human cancer. It is known for its rapid growth, easy migration, invasion and reoccurrence, and has the highest incidence rate of all types of cancer. Early detection of NSCLC is difficult to achieve and this is the primary reason for low survival rates in NSCLC. Contrast-enhanced ultrasound is the most common application for evaluating patients diagnosed with NSCLC. In the present study, a contrast-enhanced ultrasound combined with nanoparticles was performed with the aim of identifying patients with NSCLC at an early stage...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29036309/chiral-analysis-of-methamphetamine-in-oral-fluid-samples-a-method-to-distinguish-licit-from-illicit-drug-use
#5
Damon Borg, Elizabeth Kolb, Cindy Lantigua, Richard Stripp
Methamphetamine (MAMP) is a popular illicit drug abused for its central nervous system stimulating effects. MAMP is also used therapeutically in the treatment of overeating disorders, narcolepsy, attention deficit disorder, in over-the-counter (OTC) products to ease nasal congestion. MAMP exists in two enantiomeric forms, dextrorotary (d-MAMP) or levorotary (l-MAMP). The compounds are similar in chemical structure, simply differing in the orientation of functional groups around the asymmetric carbon. In part because of the availability of l-MAMP in OTC nasal inhalers, forensic guidelines require a sample to contain greater than 20% d-MAMP to consider illicit drug use when interpreting results...
September 25, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/29030269/the-importance-of-inclusion-of-kinetic-information-in-the-extrapolation-of-high-to-low-concentrations-for-human-limit-setting
#6
Liesbeth Geraets, Marco J Zeilmaker, Peter M J Bos
Human health risk assessment of inhalation exposures generally includes a high-to-low concentration extrapolation. Although this is a common step in human risk assessment, it introduces various uncertainties. One of these uncertainties is related to the toxicokinetics. Many kinetic processes such as absorption, metabolism or excretion can be subject to saturation at high concentration levels. In the presence of saturable kinetic processes of the parent compound or metabolites, disproportionate increases in internal blood or tissue concentration relative to the external concentration administered may occur resulting in nonlinear kinetics...
October 10, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/29025825/comparison-of-the-cerebroprotective-effect-of-inhalation-anaesthesia-and-total-intravenous-anaesthesia-in-patients-undergoing-cardiac-surgery-with-cardiopulmonary-bypass-a-systematic-review-and-meta-analysis
#7
Feng Chen, Guangyou Duan, Zhuoxi Wu, Zhiyi Zuo, Hong Li
OBJECTIVE: Neurological dysfunction remains a devastating postoperative complication in patients undergoing cardiac surgery with cardiopulmonary bypass (CPB), and previous studies have shown that inhalation anaesthesia and total intravenous anaesthesia (TIVA) may produce different degrees of cerebral protection in these patients. Therefore, we conducted a systematic literature review and meta-analysis to compare the neuroprotective effects of inhalation anaesthesia and TIVA. DESIGN: Searching in PubMed, EMBASE, Science Direct/Elsevier, China National Knowledge Infrastructure and Cochrane Library up to August 2016, we selected related randomised controlled trials for this meta-analysis...
October 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/29017960/upper-respiratory-tract-nociceptor-stimulation-and-stress-response-following-acute-and-repeated-cyfluthrin-inhalation-in-normal-and-pregnant-rats-physiological-rat-specific-adaptions-can-easily-be-misunderstood-as-adversities
#8
Juergen Pauluhn
This paper reviews the results from past regulatory and mechanistic inhalation studies in rats with the type II pyrethroid Cyfluthrin. Apart from many chemical irritants, Cyfluthrin was shown to be a neuroexcitatory agent without any inherent tissue-destructive or irritant property. Thus, any Cyfluthrin-induced neuroexcitatory afferent sensory stimulus from peripheral nociceptors in the upper respiratory tract is likely to be perceived as a transient stimulus triggering annoyance and/or avoidance by both rats and humans...
October 7, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28984415/mechanisms-of-carbon-nanotube-induced-pulmonary-fibrosis-a-physicochemical-characteristic-perspective
#9
REVIEW
Katherine S Duke, James C Bonner
Carbon nanotubes (CNTs) are engineered nanomaterials (ENMs) with numerous beneficial applications. However, they could pose a risk to human health from occupational or consumer exposures. Rodent models demonstrate that exposure to CNTs via inhalation, instillation, or aspiration results in pulmonary fibrosis. The severity of the fibrogenic response is determined by various physicochemical properties of the nanomaterial such as residual metal catalyst content, rigidity, length, aggregation status, or surface charge...
October 6, 2017: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
https://www.readbyqxmd.com/read/28983782/electronic-cigarettes-their-constituents-and-potential-links-to-asthma
#10
REVIEW
Phillip W Clapp, Ilona Jaspers
PURPOSE OF REVIEW: Vaping is gaining popularity in the USA, particularly among teens and young adults. While e-cigs are commonly represented as safer alternatives to tobacco cigarettes, little is known regarding the health effects of their short- or long-term use, especially in individuals with pre-existing respiratory diseases such as asthma. Flavored e-cig liquids (e-liquids) and e-cig aerosols contain airway irritants and toxicants that have been implicated in the pathogenesis and worsening of lung diseases...
October 5, 2017: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/28977704/inflammatory-proteins-in-nasal-lavage-of-workers-exposed-to-occupational-agents
#11
Roberto Castano, Berran Yucesoy, Victor J Johnson, Lucero Castellanos, Andre Cartier
BACKGROUND: Low-molecular-weight (LMW) and high-molecular-weight (HMW) agents have been recognized as causes of occupational rhinitis (OR). Immunological mechanisms underlying OR differ according to the type of exposure. While HMW agents act mainly through IgE-mediated mechanisms, LMW agents appear to act through both immunologic and non-immunologic mechanisms. OBJECTIVE: The objective of this study was to identify potential differences in the upper airways inflammatory response after exposure to LMW and HMW agents by specific inhalation challenge test (SIC)...
October 4, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28973553/associations-between-systemic-and-local-corticosteroid-use-with-metabolic-syndrome-and-body-mass-index
#12
Mesut Savas, Taulant Muka, Vincent L Wester, Erica L T van den Akker, Jenny A Visser, Gert-Jan Braunstahl, Sandra N Slagter, Bruce H R Wolffenbuttel, Oscar H Franco, Elisabeth F C van Rossum
Context: Use of systemic corticosteroids may induce adverse cardiometabolic alterations potentially leading to obesity and metabolic syndrome (MetS). Although evidence is accumulating that local corticosteroids have considerable systemic effects, their effects on cardiometabolic factors in the general population remains unclear. Objective: To investigate the association between overall corticosteroid use and specific corticosteroid types with MetS, body mass index (BMI), and other cardiometabolic traits...
August 2, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28972558/treatments-for-pulmonary-ricin-intoxication-current-aspects-and-future-prospects
#13
REVIEW
Yoav Gal, Ohad Mazor, Reut Falach, Anita Sapoznikov, Chanoch Kronman, Tamar Sabo
Ricin, a plant-derived toxin originating from the seeds of Ricinus communis (castor beans), is one of the most lethal toxins known, particularly if inhaled. Ricin is considered a potential biological threat agent due to its high availability and ease of production. The clinical manifestation of pulmonary ricin intoxication in animal models is closely related to acute respiratory distress syndrome (ARDS), which involves pulmonary proinflammatory cytokine upregulation, massive neutrophil infiltration and severe edema...
October 3, 2017: Toxins
https://www.readbyqxmd.com/read/28962529/editor-s-highlight-pulmonary-vascular-thrombosis-in-rats-exposed-to-inhaled-sulfur-mustard
#14
Matthew D McGraw, Christopher M Osborne, Emily J Mastej, Jorge A Di Paola, Dana R Anderson, Wesley W Holmes, Danielle C Paradiso, Rhonda B Garlick, Tara B Hendry-Hofer, Raymond C Rancourt, Russell W Smith, Carol Burns, Gates B Roe, Jacqueline S Rioux, Carl W White, Livia A Veress
Sulfur mustard (SM) is a chemical warfare agent. When inhaled, SM causes significant injury to the respiratory tract. Although the mechanism involved in acute airway injury after SM inhalation has been well described previously, the mechanism of SM's contribution to distal lung vascular injury is not well understood. We hypothesized that acute inhalation of vaporized SM causes activated systemic coagulation with subsequent pulmonary vascular thrombi formation after SM inhalation exposure. Sprague Dawley rats inhaled SM ethanolic vapor (3...
October 1, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28960614/polypharmacy-and-use-of-potentially-inappropriate-medications-in-long-term-care-facilities-does-coordinated-primary-care-make-a-difference
#15
Melissa K Andrew, Chad A Purcell, Emily G Marshall, Nirupa Varatharasan, Barry Clarke, Susan K Bowles
OBJECTIVES: Polypharmacy is both common and harmful for frail residents of long-term care facilities (LTCF). We aimed to study rates of polypharmacy and potentially inappropriate medications (PIMs) before and after the implementation of a new model of coordinated primary care in LTCF, 'Care by Design (CBD)'. METHODS: This was an observational before/after study in 10 LTCFs in Halifax, NS, Canada. Chart reviews were conducted for 529 LTCF residents for whom medication use was available...
September 27, 2017: International Journal of Pharmacy Practice
https://www.readbyqxmd.com/read/28955207/hydrogen-inhalation-protects-against-ototoxicity-induced-by-intravenous-cisplatin-in-the-guinea-pig
#16
Anette E Fransson, Marta Kisiel, Kristian Pirttilä, Curt Pettersson, Pernilla Videhult Pierre, Göran F E Laurell
Introduction: Permanent hearing loss and tinnitus as side-effects from treatment with the anticancer drug cisplatin is a clinical problem. Ototoxicity may be reduced by co-administration of an otoprotective agent, but the results in humans have so far been modest. Aim: The present preclinical in vivo study aimed to explore the protective efficacy of hydrogen (H2) inhalation on ototoxicity induced by intravenous cisplatin. Materials and Methods: Albino guinea pigs were divided into four groups. The Cispt (n = 11) and Cispt+H2 (n = 11) groups were given intravenous cisplatin (8 mg/kg b...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28954480/analysis-of-the-impact-of-harmful-factors-in-the-workplace-on-functioning-of-the-respiratory-system-of-firefighters
#17
Magdalena Witt, Mariusz Goniewicz, Witold Pawłowski, Krzysztof Goniewicz, Wiesława Biczysko
INTRODUCTION AND OBJECTIVE: Firefighters are considered a healthy and fit group of individuals, well-prepared for taking action in disaster situations. While working, they suffer from exposure to certain toxic agents, especially combustion products generated when a fire takes place. Among them, the most frequent and the most toxic are: carbon monoxide, hydrogen cyanide, ammonia, and those resulting from PVC combustion - hydrochloride, phosgene and chloride. Additionally, fire-extinguisher powder can be inhaled and lead to certain lesion in the airways...
September 21, 2017: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28953074/constrictive-bronchiolitis-attributable-to-inhalation-of-toxic-agents-considerations-for-a-case-definition
#18
Daniel E Banks, Caroline A Bolduc, Sayed Ali, Michael J Morris
OBJECTIVE: We identified cases of Constrictive Bronchiolitis (CB), an inflammatory injury obliterating the small airways, in adults caused by inhalational exposure to determine an appropriate case definition. METHODS: We performed a systematic review with meta-analysis for these cases from 1990 to 2017. Publications were included if there was 1) inhalational exposure; 2) respiratory symptoms/signs; 3) pulmonary function test results; and 4) computerized tomographic chest imaging...
September 25, 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28951521/isoflurane-promotes-glucose-metabolism-through-upregulation-of-mir-21-and-suppresses-mitochondrial-oxidative-phosphorylation-of-ovarian-cancer-cells
#19
Nai-Liang Guo, Jing-Hua Tan, Jing-Ping Wu, Ying-Hua Xu
Ovarian cancer is one of the most lethal gynecologic malignancies in women. Isoflurane is one of volatile anesthetics used extensively for inhalational anesthesia and gynaecological surgery. However, the effects of isoflurane on ovarian cancer have not been fully elucidated. It is wildly studied that one of the biochemical fingerprints of cancer cells is the altered energy metabolism which is characterized by preferential dependence on glycolysis for energy production in an oxygen-independent manner. In this study, we explored the roles of isoflurane in the regulation of cellular metabolism of ovarian cancer cells...
September 26, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28949804/can-dexmedetomidine-influence-recovery-profiles-from-general-anesthesia-in-nasal-surgery
#20
Ho Seok Lee, Ho Young Yoon, Ho Jun Jin, Se Hwan Hwang
Objectives Dexmedetomidine has sympatholytic, sedative, anesthetic, and analgesic effects, as well as vasoconstrictive effects, which may help prevent hypotension under general anesthesia. This meta-analysis aimed to perform a systematic review of the literature and investigate the effect of dexmedetomidine on perioperative morbidity following nasal surgery and its adverse effects. Data Sources MEDLINE, SCOPUS, and the Cochrane database. Review Methods Two authors independently searched the databases from their inception to March 2017...
September 1, 2017: Otolaryngology—Head and Neck Surgery
keyword
keyword
32329
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"