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https://www.readbyqxmd.com/read/28649981/a-practical-and-catalyst-free-trifluoroethylation-reaction-of-amines-using-trifluoroacetic-acid
#1
Keith G Andrews, Radmila Faizova, Ross M Denton
Amines are a fundamentally important class of biologically active compounds and the ability to manipulate their physicochemical properties through the introduction of fluorine is of paramount importance in medicinal chemistry. Current synthesis methods for the construction of fluorinated amines rely on air and moisture sensitive reagents that require special handling or harsh reductants that limit functionality. Here we report practical, catalyst-free, reductive trifluoroethylation reactions of free amines exhibiting remarkable functional group tolerance...
June 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28646964/global-advocacy-needed-for-sepsis-in-children
#2
Sagar Dugani, Niranjan Kissoon
Sepsis in children is a complex syndrome that develops from various infections and results in 15-30% mortality in high-income countries and up to 50% or higher in low-income countries. Worldwide, this represents an annual burden of 30 million cases resulting in 8 million deaths. Not surprisingly, there is a significantly higher burden in low-income countries with children there being 18 times more likely to die before the age of 5 years compared to high-income countries. Factors such as commercial air travel, climate change, and unchecked population growth have contributed to the growing burden of infectious diseases and ensuing sepsis...
June 2017: Journal of Infection
https://www.readbyqxmd.com/read/28639070/osseous-cartilaginous-spreader-graft-and-nasal-framework-reconstruction
#3
Safvet Ors
Revision rhinoplasties and saddle nose deformities usually require grafting for reconstruction. Between January 1, 2000, and January 1, 2017, autologous rib grafts were used in 127 secondary and tertiary rhinoplasty patients [(57/127 females) and (70/127 males)]. Osseous-cartilaginous rib grafts (OCRGs) were divided into three parts (i.e., 1/3 upper peripheral, 1/3 central, and 1/3 lower peripheral). The harvested OCRGs were also shaped as vertical strips using a number 11 scalpel blade. These OCRGs were shaped to form the L-strut cartilaginous graft (LSCGs), osseous-cartilaginous spreader grafts (OCSGs), osseous-cartilaginous onlay grafts, nasal valve grafts (NVGs), and lower lateral cartilaginous grafts (LLCGs)...
June 21, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28624388/geo-economic-variations-in-epidemiology-patterns-of-care-and-outcomes-in-patients-with-acute-respiratory-distress-syndrome-insights-from-the-lung-safe-prospective-cohort-study
#4
John G Laffey, Fabiana Madotto, Giacomo Bellani, Tài Pham, Eddy Fan, Laurent Brochard, Pravin Amin, Yaseen Arabi, Ednan K Bajwa, Alejandro Bruhn, Vladimir Cerny, Kevin Clarkson, Leo Heunks, Kiyoyasu Kurahashi, Jon Henrik Laake, Jose A Lorente, Lia McNamee, Nicolas Nin, Jose Emmanuel Palo, Lise Piquilloud, Haibo Qiu, Juan Ignacio Silesky Jiménez, Andres Esteban, Daniel F McAuley, Frank van Haren, Marco Ranieri, Gordon Rubenfeld, Hermann Wrigge, Arthur S Slutsky, Antonio Pesenti
BACKGROUND: Little information is available about the geo-economic variations in demographics, management, and outcomes of patients with acute respiratory distress syndrome (ARDS). We aimed to characterise the effect of these geo-economic variations in patients enrolled in the Large Observational Study to Understand the Global Impact of Severe Acute Respiratory Failure (LUNG SAFE). METHODS: LUNG SAFE was done during 4 consecutive weeks in winter, 2014, in a convenience sample of 459 intensive-care units in 50 countries across six continents...
June 14, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28621916/construction-of-anterior-hemi-corneal-equivalents-using-nontransfected-human-corneal-cells-and-transplantation-in-dog-models
#5
Bin Xu, Zhan Song, Tingjun Fan
Tissue-engineered human anterior hemi-cornea (TE-aHC) is a promising equivalent for treating anterior lamellar keratopathy to surmount the severe shortage of donated corneas. This study was intended to construct a functional TE-aHC with nontransfected human corneal stromal (ntHCS) and epithelial (ntHCEP) cells using acellular porcine corneal stromata (aPCS) as a carrier scaffold, and evaluate its biological functions in a dog model. To construct a TE-aHC, ntHCS cells were injected into an aPCS scaffold and cultured for 3 days; then, ntHCEP cells were inoculated onto the Bowman's membrane of the scaffold and cultured for 5 days under air-liquid interface condition...
June 16, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28610688/efficacy-of-patient-specific-bolus-created-using-three-dimensional-printing-technique-in-photon-radiotherapy
#6
Koya Fujimoto, Takehiro Shiinoki, Yuki Yuasa, Hideki Hanazawa, Keiko Shibuya
PURPOSE: A commercially available bolus ("commercial-bolus") does not make complete contact with the irregularly shaped patient skin. This study aims to customise a patient-specific three-dimensional (3D) bolus using a 3D printing technique ("3D-bolus") and to evaluate its clinical feasibility for photon radiotherapy. METHODS: The 3D-bolus was designed using a treatment planning system (TPS) in Digital Imaging and Communications in Medicine-Radiotherapy (DICOM-RT) format, and converted to stereolithographic format for printing...
June 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28608962/image-based-computational-fluid-dynamics-in-the-lung-virtual-reality-or-new-clinical-practice
#7
REVIEW
Kelly S Burrowes, Jan De Backer, Haribalan Kumar
The development and implementation of personalized medicine is paramount to improving the efficiency and efficacy of patient care. In the respiratory system, function is largely dictated by the choreographed movement of air and blood to the gas exchange surface. The passage of air begins in the upper airways, either via the mouth or nose, and terminates at the alveolar interface, while blood flows from the heart to the alveoli and back again. Computational fluid dynamics (CFD) is a well-established tool for predicting fluid flows and pressure distributions within complex systems...
June 13, 2017: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
https://www.readbyqxmd.com/read/28608491/toxicity-and-protective-effect-of-phenolic-enriched-ethylacetate-fraction-of-ocimum-gratissimum-linn-leaf-against-acute-inflammation-and-oxidative-stress-in-rats
#8
Abayomi M Ajayi, Solomon Umukoro, Benneth Ben-Azu, Bulus Adzu, Olusegun G Ademowo
Preclinical Research Ocimum gratissimum L. leaves have attracted considerable attention from researchers because of their medicinal value that include anti-inflammatory, analgesic, antimicrobial, and antioxidant activities. In the present study, the toxicity and the protective effect of phenolic extract of O. gratissimum leaf (EAFOg) against acute inflammation and oxidative stress in rats was assessed. EAFOg, enriched in phenols had no cytotoxic effect against CHO-k1 cells, and no lethality against brine shrimp eggs or mice at a dose of 2000 mg/kg...
June 2017: Drug Development Research
https://www.readbyqxmd.com/read/28599895/variations-in-resting-energy-expenditure-impact-on-gestational-weight%C3%A2-gain
#9
Ek Berggren, P O'Tierney-Ginn, S Lewis, L Presley, S Hauguel De-Mouzon, P M Catalano
BACKGROUND: There are significant variations in gestational weight gain, with many women gaining in excess of the Institute of Medicine guidelines. Unfortunately, efforts to improve appropriate gestational weight gain have had only limited success. To date, interventions have focused primarily on decreasing energy intake and/or increasing physical activity. Maternal resting energy expenditure, which comprises ∼60% of total energy expenditure compared with the ∼20% that comes from physical activity, may be an important consideration in understanding variations in gestational weight gain...
June 17, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28592704/the-added-value-of-exhaled-breath-temperature-in-respiratory-medicine
#10
Todor A Popov, Tanya Kralimarkova, Marina Labor, Davor Plavec
Recognition of the huge economic burden chronic respiratory diseases pose for society motivated fundamental and clinical research leading to insight into the role of airway inflammation in various disease entities and their phenotypes. However, no easy, cheap and patient-friendly methods to assess it have found a place in routine clinical practice. Measurement of exhaled breath temperature (EBT) has been suggested as a non-invasive method to detect inflammatory processes in the airways as a result of increased blood flow within the airway walls...
June 8, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28585229/tomoelastography-of-the-prostate-using-multifrequency-mr-elastography-and-externally-placed-pressurized-air-drivers
#11
Florian Dittmann, Rolf Reiter, Jing Guo, Matthias Haas, Patrick Asbach, Thomas Fischer, Jürgen Braun, Ingolf Sack
PURPOSE: To demonstrate the feasibility of in vivo multifrequency magnetic resonance elastography (MRE) of the prostate using externally placed drivers. METHODS: Three pressurized-air drivers were used to excite shear waves within the prostate at vibration frequencies of 60, 70, and 80 Hz. Full 3D wave fields were acquired by multislice spin-echo echo-planar imaging in conjunction with tomoelastography wave speed recovery for generating full field-of-view stiffness maps...
June 6, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28583003/transcranial-doppler-to-detect-right-to-left-communication-evaluation-versus-transesophageal-echocardiography-in-real-life
#12
Alexandre Maillet, Antoine Pavero, Pierre Salaun, Alexis Pibourdin, Sophie Skopinski, Jean-Benoit Thambo, Igor Sibon, Joël Constans, Carine Boulon
We compared transcranial Doppler (TCD) with transesophageal echocardiography (TEE) and transthoracic echocardiography (TTE) for the detection of right to left communication (RLC) in the heart. All patients explored from 2013 to 2016 in a vascular medicine unit to detect RLC by TCD were included. Right to left communication was detected by TCD monitoring for microembolic signals after intravenous injection of agitated 5% glucose and air. One hundred one patients were explored for RLC by TCD, 64 by TEE (not possible in 10, bubble injection in 51), and 93 by TTE because of unexplained stroke or arterial thrombosis (51 males, 50 females, age 51...
January 1, 2017: Angiology
https://www.readbyqxmd.com/read/28572943/influence-of-low-dose-of-gamma-radiation-and-storage-on-some-vitamins-and-mineral-elements-of-dried-oyster-mushrooms-pleurotus-ostreatus
#13
Nii Korley Kortei, George Tawia Odamtten, Mary Obodai, Michael Wiafe-Kwagyan, Edward Adotey Addo
Mushrooms contain some of the most potent natural medicines on the planet. Vitamins A, C, D, Mineral elements, contents, as well as total soluble solids (Brix(o)) of dried composition of Pleurotus ostreatus were investigated after exposing to gamma radiation doses of 0 (control), 0.5, 1, 1.5, and 2 kGy at a dose rate of 1.7 kGy per hour in air from a Cobalt 60 source (SLL 515, Hungary) batch irradiator prior to storage (0 month) and after storage (12 months) at room temperature (28 ± 2°C). Results obtained showed some significant (p < ...
May 2017: Food Science & Nutrition
https://www.readbyqxmd.com/read/28556789/characterization-of-metabolite-profile-in-phyllanthus-niruri-and-correlation-with-bioactivity-elucidated-by-nuclear-magnetic-resonance-based-metabolomics
#14
Ahmed Mediani, Faridah Abas, M Maulidiani, Alfi Khatib, Chin Ping Tan, Intan Safinar Ismail, Khozirah Shaari, Amin Ismail
Phyllanthus niruri is an important medicinal plant. To standardize the extract and guarantee its maximum benefit, processing methods optimization ought to be amenable and beneficial. Herein, three dried P. niruri samples, air (AD), freeze (FD) and oven (OD), extracted with various ethanol to water ratios (0%, 50%, 70%, 80% and 100%) were evaluated for their metabolite changes using proton nuclear magnetic resonance (¹H-NMR)-based metabolomics approach. The amino acids analysis showed that FD P. niruri exhibited higher content of most amino acids compared to the other dried samples...
May 30, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28546050/shared-decision-making-in-argentina-in-2017
#15
Mariela Barani, Karin Kopitowski, Carolina Carrara, María Victoria Ruiz Yanzi
Argentina is a high-middle income country located in Southern South America with an estimated population of 44 million inhabitants. The epidemiological profile of the population is characterised by an increase of non-communicable diseases. The health system is heterogeneous, fragmented and loosely integrated. There are no unified research agenda or government initiatives encouraging the implementation of and research on shared decision making (SDM). Progress has been made lately to respect patient autonomy through the enactment of the 'Patients' Rights Act', which expressly enshrines the right of patients to get information as a key element of decision-making...
June 2017: Zeitschrift Für Evidenz, Fortbildung und Qualität Im Gesundheitswesen
https://www.readbyqxmd.com/read/28541690/bioactive-glycosides-from-the-twigs-of-litsea-cubeba
#16
Ling-Yan Wang, Ming-Hua Chen, Jiang Wu, Hua Sun, Wei Liu, Yu-Hong Qu, Yan-Cheng Li, Yu-Zhuo Wu, Rui Li, Dan Zhang, Su-Juan Wang, Sheng Lin
The air-dried twigs of Litsea cubeba, a traditional Chinese medicinal tree, afforded 10 new aromatic glycosides (1-10) and 26 known analogues. Their structures were assigned by extensive 1D and 2D NMR experiments, and the absolute configurations were resolved by chemical methods, electronic circular dichroism, specific rotation, and X-ray crystallographic analysis. Compound 4 is the first example of a naturally occurring homoneolignan glucoside. Compounds 4, 6-8, and the known neolignan glucosides (11, 12, and 14) at respective 10 μM concentrations were found to reduce acetaminophen-induced HepG2 cell injury with 30...
May 25, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28540549/the-association-between-air-pollutants-and-autism-spectrum-disorders
#17
Chunyan Yang, Weiwei Zhao, Kui Deng, Vanessa Zhou, Xiaohua Zhou, Yan Hou
Autism spectrum disorders are a member of the pervasive developmental disorders (PDDs) that have been increasing dramatically since described by Leo Kanner in 1943. In the past decade, the number of epidemiological publications addressing air pollution exposures and autism has grown correspondingly, but the association is still unclear. Whether air pollutants play a causal role and which substances are related with autism requires further study. We systematically reviewed the literature from 2005 to 2016 in MEDLINE (National Library of Medicine), Web of Science, and PubMed and summarized the association between different air pollutants and autism...
May 24, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28539723/antimicrobial-and-anti-inflammatory-effects-of-ethanol-extract-of-corylopsis-coreana-uyeki-flos
#18
Da-Eon Park, In-Soo Yoon, Jung-Eun Kim, Ji-Hye Seo, Jin-Cheol Yoo, Chun-Sik Bae, Chang-Dai Lee, Dae-Hun Park, Seung-Sik Cho
BACKGROUND: Corylopsis coreana Uyeki (Hamamelidaceae) is a medicinal plant cultivated in Northeast Asia. Previously, we have reported that an ethanol extract of Corylopsis coreana Uyeki flos (ECCF) contains four active compounds with antioxidant activity. OBJECTIVE: The aim of this study was to investigate the antimicrobial spectrum against infectious bacteria and anti-inflammatory effect of ECCF in a mouse model of acute local inflammation. MATERIALS AND METHODS: In vitro antimicrobial susceptibility was evaluated using standard plate assay technique...
April 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28534147/hypothyroidism-in-hospitalized-elderly-patients-a-sign-of-worse-prognosis
#19
N Sforza, J Rosenfarb, R Rujelman, M Rosmarin, E Blanc, C Frigerio, P Fossati, D Caruso, C Faingold, T Meroño, G Brenta
PURPOSE: Overt hypothyroidism has adverse clinical consequences and might worsen prognosis in critically ill elderly patients. However, the difficult interpretation of thyroid function tests (TFT) due to non-thyroidal illness (NTI) has led to discouragement of screening for thyroid dysfunction. Our aim was to determine the prevalence of TFT compatible with hypothyroidism and to study its influence on mortality among hospitalized elderly patients. METHODS: In this prospective study we consecutively included all patients ≥60 years admitted by the Internal Medicine Department to the hospital ward (n = 451) of the Cesar Milstein Hospital in Buenos Aires, Argentina...
May 22, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28531789/do-picu-patients-meet-technical-criteria-for-performing-indirect-calorimetry
#20
Megan R Beggs, Gonzalo Garcia Guerra, Bodil M K Larsen
BACKGROUND & AIMS: Indirect calorimetry (IC) is considered gold standard for assessing energy needs of critically ill children as predictive equations and clinical status indicators are often unreliable. Accurate assessment of energy requirements in this vulnerable population is essential given the high risk of over or underfeeding and the consequences thereof. The proportion of patients and patient days in pediatric intensive care (PICU) for which energy expenditure (EE) can be measured using IC is currently unknown...
October 2016: Clinical Nutrition ESPEN
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