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https://www.readbyqxmd.com/read/28929591/cobalt-catalyzed-cross-dehydrogenative-c-sp2-c-sp3-coupling-of-oxazole-thiazole-with-ether-or-cycloalkane
#1
Xiaojiao Wang, Bowen Lei, Lifang Ma, Lisi Zhu, Xinyue Zhang, Hao Zuo, Dailin Zhuang, Ziyuan Li
Direct C5-alkylation of oxazole/thiazole with ether or cycloalkane has been achieved through a cobalt-catalyzed cross-dehydrogenative couling (CDC) process in moderate to good yields. This transformation represents the first C(sp2)-C(sp3) cross-coupling at the C5-position of azole via double C-H bond cleavages. Various functional groups on oxazole/thiazole substrates, as well as water and air, are well-tolerated with this concise and practical protocol, constituting straightforward access to heterocycles with great medicinal significance...
September 19, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28923146/cannon-ball-diagnosis-and-management-in-a-flight-attendant-candidate
#2
Meryem Zerrik, Houda Echchachoui, Zakaria Iloughmane, Choukri El'mhadi, Salaheddine Elkhader, Laila Benaissa, Mohamed Chemsi
BACKGROUND: ''Cannon ball'' opacities on chest X-rays are a common manifestation of hematogenous dissemination of a malignant tumor in the lungs. They indicate an advanced stage of disease with a very grim prognosis in terms of cure and survival. In aerospace medicine, this aspect means the patient is unfit for flight duties. Nonmetastatic etiologies of pulmonary nodules are rare. We report a case of cannon ball opacities discovered fortuitously during an admission visit. CASE REPORT: A 23-yr-old flight attendant candidate came to the Aeromedical Expertise Center of the Military Hospital in Rabat for medical evaluation...
October 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28902615/irregular-analytical-errors-in-diagnostic-testing-a-novel-concept
#3
Michael Vogeser, Christoph Seger
BACKGROUND: In laboratory medicine, routine periodic analyses for internal and external quality control measurements interpreted by statistical methods are mandatory for batch clearance. Data analysis of these process-oriented measurements allows for insight into random analytical variation and systematic calibration bias over time. However, in such a setting, any individual sample is not under individual quality control. The quality control measurements act only at the batch level. Quantitative or qualitative data derived for many effects and interferences associated with an individual diagnostic sample can compromise any analyte...
September 13, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28893450/emergency-medicine-evaluation-and-management-of-the-end-stage-renal-disease-patient
#4
REVIEW
Brit Long, Alex Koyfman, Courtney M Lee
BACKGROUND: End stage renal disease (ESRD) is increasing in the U.S., and these patients demonstrate greater all-cause mortality, cardiovascular events, and hospitalization rates when compared to those with normal renal function. These patients may experience significant complications associated with loss of renal function and dialysis. OBJECTIVE: This review evaluates complications of ESRD including cardiopulmonary, neurologic, infectious disease, vascular, and access site complications, as well as medication use in this population...
September 5, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28874924/reduction-in-pain-medication-prescriptions-and-self-reported-outcomes-associated-with-acupuncture-in-a-military-patient-population
#5
Paul Crawford, Donald B Penzien, Remy Coeytaux
Background: Acupuncture is being offered to patients as part of routine medical care in selected military bases in the United States. There is little published information about the clinical outcomes associated with acupuncture in these clinical settings. Objective: The goal of this research was to assess clinical outcomes observed among adult patients who received acupuncture treatments at a United States Air Force medical center. Materials and Methods: This retrospective chart review was performed at the Nellis Family Medicine Residency in the Mike O'Callaghan Military Medical Center at Nellis Air Force Base in Las Vegas, NV...
August 1, 2017: Medical Acupuncture
https://www.readbyqxmd.com/read/28868597/decompressing-recompression-chamber-attendants-during-australian-submarine-rescue-operations
#6
Michael P Reid, Andrew Fock, David J Doolette
INTRODUCTION: Inside chamber attendants rescuing survivors from a pressurised, distressed submarine may themselves accumulate a decompression obligation which may exceed the limits of Defense and Civil Institute of Environmental Medicine tables presently used by the Royal Australian Navy. This study assessed the probability of decompression sickness (PDCS) for medical attendants supervising survivors undergoing oxygen-accelerated saturation decompression according to the National Oceanic and Atmospheric Administration (NOAA) 17...
September 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/28868596/decompressing-rescue-personnel-during-australian-submarine-rescue-operations
#7
Michael P Reid, Andrew Fock, David J Doolette
INTRODUCTION: Personnel rescuing survivors from a pressurized, distressed Royal Australian Navy (RAN) submarine may themselves accumulate a decompression obligation, which may exceed the bottom time limits of the Defense and Civil Institute of Environmental Medicine (DCIEM) Air and In-Water Oxygen Decompression tables (DCIEM Table 1 and 2) presently used by the RAN. This study compared DCIEM Table 2 with alternative decompression tables with longer bottom times: United States Navy XVALSS_DISSUB 7, VVAL-18M and Royal Navy 14 Modified tables...
September 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/28867859/pharmacognostical-and-phytochemical-studies-of-helleborus-niger-l-root
#8
V Kishor Kumar, K G Lalitha
BACKGROUND: Helleborus niger L (Ranunculaceae) is used Ayurvedic and Unani systems and other herbal medicine systems. The roots of H. niger have a good medicinal value. AIMS: To conduct a pharmacognostical and phytochemical study of H. niger. MATERIALS AND METHODS: The pharmacognostical studies on roots including parameters such as taxonomical, macroscopic, microscopic characters, physico-chemical, ultra-violet analysis and phytochemical studies are established...
January 2017: Ancient Science of Life
https://www.readbyqxmd.com/read/28853608/mesenchymal-stromal-cell-exosomes-ameliorate-experimental-bronchopulmonary-dysplasia-and-restore-lung-function-through-macrophage-immunomodulation
#9
Gareth R Willis, Angeles Fernandez-Gonzalez, Jamie Anastas, Sally H Vitali, Xianlan Liu, Maria Ericsson, April Kwong, S Alex Mitsialis, Stella Kourembanas
RATIONALE: Mesenchymal stem/stromal cell (MSC) therapies have shown promise in preclinical models of pathologies relevant to newborn medicine, such as bronchopulmonary dysplasia (BPD). We have reported that the therapeutic capacity of MSCs is comprised in their secretome, and demonstrated that the therapeutic vectors are exosomes produced by MSCs (MSC-exos). OBJECTIVE: To assess efficacy of MSC-exo treatment in a pre-clinical model of BPD and to investigate mechanisms underlying MSC-exo therapeutic action...
August 30, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28846489/zika-chikungunya-and-other-emerging-vector-borne-viral-diseases
#10
Scott C Weaver, Caroline Charlier, Nikos Vasilakis, Marc Lecuit
Arthropod-borne viruses (arboviruses) have a long history of emerging to infect humans, but during recent decades, they have been spreading more widely and affecting larger populations. This is due to several factors, including increased air travel and uncontrolled mosquito vector populations. Emergence can involve simple spillover from enzootic (wildlife) cycles, as in the case of West Nile virus accompanying geographic expansion into the Americas; secondary amplification in domesticated animals, as seen with Japanese encephalitis, Venezuelan equine encephalitis, and Rift Valley fever viruses; and urbanization, in which humans become the amplification hosts and peridomestic mosquitoes, mainly Aedes aegypti, mediate human-to-human transmission...
August 28, 2017: Annual Review of Medicine
https://www.readbyqxmd.com/read/28845776/self-heating-pasteurization-of-substrates-for-culinary-medicinal-mushrooms-cultivation-in-mexico
#11
Viviana Morales, Jose E Sánchez
The aim of this study was to evaluate a self-heating pasteurization technique in preparing substrates for mushroom production. Seven species were used: Agrocybe aegerita, Auricularia fuscosuccinea, Pleurotus djamor, P. eryngii, P. ostreatus, Lentinula edodes, and Ganoderma lucidum. They were cultivated on grass, corncob, wood shavings, and a mixture thereof. The self-heating technique allowed for pasteurization of 3 of the substrates (grass, corncob, and the mixture). The preheating chamber comprised a drawer placed under the pasteurization crate...
2017: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/28844179/noninvasive-absolute-epr-oxygen-imaging-for-the-assessment-of-tissue-graft-oxygenation
#12
Mrignayani Kotecha, Boris Epel, Sriram Ravindran, Deborah Dorcemus, Syam P Nukavarapu, Howard J Halpern
Oxygen is the single most important molecule for sustaining life and therefore an important variable in tissue engineering and regenerative medicine (TERM). It has been shown that the change in oxygen concentration in an artificial or engineered tissue graft affects cell survival, differentiation, and tissue growth in profound ways. However, at present, there are no reliable methods to map partial oxygen pressure in growing artificial tissues. Here, we adapt and test the suitability of electron paramagnetic resonance oxygen imaging (EPROI) in assessing tissue graft oxygenation in vitro...
August 26, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28843839/tracking-the-penetration-of-plasma-reactive-species-in-tissue-models
#13
REVIEW
Endre J Szili, Sung-Ha Hong, Jun-Seok Oh, Nishtha Gaur, Robert D Short
Electrically generated cold atmospheric plasma is being intensively researched for novel applications in biology and medicine. Significant attention is being given to reactive oxygen and nitrogen species (RONS), initially generated upon plasma-air interactions, and subsequently delivered to biological systems. Effects of plasma exposure are observed to millimeter depths within tissue. However, the exact nature of the initial plasma-tissue interactions remains unknown, including RONS speciation and delivery depth, or how plasma-derived RONS intervene in biological processes...
August 23, 2017: Trends in Biotechnology
https://www.readbyqxmd.com/read/28833514/tissue-oxygenation-mapping-by-combined-chemical-shift-and-t1-magnetic-resonance-imaging
#14
Florence Franconi, Laurent Lemaire, Hervé Saint-Jalmes, Patrick Saulnier
PURPOSE: To propose a method for determining tissue oxygenation via the measurement of fat T1 . The method is based on a 2D fat/water chemical shift-encoded and T1 -weighted acquisition. THEORY AND METHODS: A 2D data set was acquired with a fast spin echo sequence with several echo asymmetries and repetition times, wherein one dimension is related to the fat/water phase modulation and the other to the T1 saturation recovery. A joint magnitude-based process of phase modulation and T1 evolution allowed for the collection of the fat fraction and T1 maps with resolved fat or water dominance ambiguity while avoiding the phased error problem...
August 21, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28832721/development-and-evaluation-of-an-inhalation-chamber-for-in-vivo-tests
#15
Eduardo R DA Silva, Humberto R Bizzo, Patrícia D Fernandes, Valdir F DA Veiga, Suzana G Leitão, Danilo R DE Oliveira
The bioavailability, toxicity, and therapeutic efficacy of a drug is directly related to its administration route. The pulmonary route can be accessed by inhalation after fumigation, vaporization or nebulization. Thus, pharmacological and toxicological evaluation accessed by an apparatus specifically designed and validated for this type of administration is extremely important. Based on pre-existing models, an inhalation chamber was developed. This presents a central structure with five animal holders. The nebulized air passes directly and continuously through these holders and subsequently to an outlet...
August 17, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28831371/effect-of-weather-on-pedestrian-trip-count-and-duration-city-scale-evaluations-using-mobile-phone-application-data
#16
Anthony P Vanky, Santosh K Verma, Theodore K Courtney, Paolo Santi, Carlo Ratti
We examined the association between meteorological (weather) conditions in a given locale and pedestrian trips frequency and duration, through the use of locative digital data. These associations were determined for seasonality, urban microclimate, and commuting. We analyzed GPS data from a broadly available activity tracking mobile phone application that automatically recorded 247,814 trips from 5432 unique users in Boston and 257,697 trips from 8256 users in San Francisco over a 50-week period. Generally, we observed increased air temperature and the presence of light cloud cover had a positive association with hourly trip frequency in both cities, regardless of seasonality...
December 2017: Preventive Medicine Reports
https://www.readbyqxmd.com/read/28829536/pediatric-heat-related-illness-recommendations-for-prevention-and-management-digest
#17
Roberta J Dunn, Tommy Y Kim, Pradip Chaudhari
Infants, children, and adolescents are at increased risk for heat-related illness due to their inability to remove themselves from dangerous environments. Evidence shows that morbidity and mortality from heat illness is related to the length of time core temperature is elevated, so rapid reduction and accurate serial measurements are crucial to prevention of organ system damage and death. The primary methods of patient cooling are conduction (ice-water immersion, cold packs) and convection (moisture and moving air)...
August 22, 2017: Pediatric Emergency Medicine Practice
https://www.readbyqxmd.com/read/28828513/-postmortem-imaging-procedures-experiences-and-perspectives
#18
REVIEW
S von Stillfried, P Isfort, R Knüchel-Clarke
Autopsies are of key importance for the understanding of the anatomy, pathophysiology and pathomorphology. In forensic medicine, the virtual autopsy is a standard instrument in autopsy practice. The advantage of postmortem imaging is the generation of a three-dimensional pre-autopsy snapshot of the body from head to toe with excellent visualization of skeletal pathologies and air inclusions. When angiography is performed, pathologies of the cardiovascular system can additionally be evaluated. The shortcomings of postmortem imaging are the low soft tissue contrast with CT imaging, the lack of haptic, olfactory and color impressions...
August 21, 2017: Der Pathologe
https://www.readbyqxmd.com/read/28828153/effect-of-polyethelene-oxide-on-the-thermal-degradation-of-cellulose-biofilm-low-cost-material-for-soft-tissue-repair-in-dentistry
#19
Anna Akkus, Rakim Tyler, David Schiraldi, Renato Roperto, Fady Faddoul, Sorin Teich
BACKGROUND: Bio cellulose is a byproduct of sweet tea fermentation known as kombusha. During the biosynthesis by bacteria cellulose chains are polymerized by enzyme from activated glucose. The single chains are then extruded through the bacterial cell wall. Interestingly, a potential of the Kombucha's byproduct bio cellulose (BC) as biomaterial had come into focus only in the past few decades. The unique physical and mechanical properties such as high purity, an ultrafine and highly crystalline network structure, a superior mechanical strength, flexibility, pronounced permeability to gases and liquids, and an excellent compatibility with living tissue that reinforced by biodegradability, biocompatibility, large swelling ratios...
July 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28825572/-relationship-between-level-of-education-and-overweight-in-outpatients-a-transversal-study
#20
César N Sánchez, Natalia Maddalena, Marina Penalba, Marina Quarleri, Verónica Torres, Adolfo Wachs
Obesity and overweight are serious public health problems. Many observational studies suggest that low level of education would be among the many factors involved in its development. Our objective was to determine whether there was a relationship between lower education levels and increased body mass index (BMI). In this cross-sectional study, the BMI of adult outpatients evaluated at Internal Medicine Service of a General Hospital in Buenos Aires City was measured and a survey was given to determine their level of education and the prevalence of other cardiovascular risk factors...
2017: Medicina
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