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https://www.readbyqxmd.com/read/28717779/impact-of-middle-east-respiratory-syndrome-outbreak-on-the-use-of-emergency-medical-resources-in-febrile-patients
#1
Hyunho Jeong, Sikyoung Jeong, Juseok Oh, Seon Hee Woo, Byung Hak So, Jeong Hee Wee, Ji Hoon Kim, Ji Yong Im, Seung Pill Choi, Kyoungnam Park, Byul Nim Hee Cho, Sungyoup Hong
OBJECTIVE: Outbreaks of transmissible respiratory infection are suspected to have significant effects on the health of pediatric and geriatric patients. The objective was to assess the impact of the Middle East respiratory syndrome (MERS) outbreak on the use of emergency resources. METHODS: An ecologic analysis of emergency department (ED) records between September and December 2015, was performed. Data was obtained from the National Emergency Department Information System database for Korea...
June 2017: Clinical and Experimental Emergency Medicine
https://www.readbyqxmd.com/read/28686860/muscle-stem-cells-undergo-extensive-clonal-drift-during-tissue-growth-via-meox1-mediated-induction-of-g2-cell-cycle-arrest
#2
Phong Dang Nguyen, David Baruch Gurevich, Carmen Sonntag, Lucy Hersey, Sara Alaei, Hieu Tri Nim, Ashley Siegel, Thomas Edward Hall, Fernando Jaime Rossello, Sarah Elizabeth Boyd, Jose Maria Polo, Peter David Currie
Organ growth requires a careful balance between stem cell self-renewal and lineage commitment to ensure proper tissue expansion. The cellular and molecular mechanisms that mediate this balance are unresolved in most organs, including skeletal muscle. Here we identify a long-lived stem cell pool that mediates growth of the zebrafish myotome. This population exhibits extensive clonal drift, shifting from random deployment of stem cells during development to reliance on a small number of dominant clones to fuel the vast majority of muscle growth...
July 6, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/28664382/direct-determination-of-nimesulide-in-natural-waters-and-wastewater-by-cathodic-stripping-voltammetry
#3
Luciane Miranda, Vanessa C Pereira, Christiane S Machado, Yohandra R Torres, Vanessa E Dos Anjos, Sueli P Quináia
Pharmaceuticals are included in a group of compounds considered as contaminants of emerging concern (CECs) in environmental matrices. The quantification of CECs is typically accomplished using chromatographic methods that require several sample pretreatment steps. The current study proposes a voltammetric method to quantify directly nimesulide (NIM) in aqueous samples. The voltammetric parameters were optimized and chosen based on the profile of the voltammograms and peak current intensity. The adequacy of the analytical method was evaluated using validation criteria, such as accuracy, selectivity, linearity, detection, and quantification limits...
June 29, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28660722/in-silico-designed-novel-non-peptidic-abad-ld-hot-spots-mimetics-reverse-a%C3%AE-induced-mitochondrial-impairments-in-vitro
#4
Ambily Nath Indu Viswanath, TaeHun Kim, Seo Yun Jung, Sang Min Lim, Ae Nim Pae
Present work aimed to introduce non-peptidic ABAD loop D (LD ) hot spots mimetics as ABAD-Aβ inhibitors. A full length atomistic model of ABAD-Aβ complex was built as a scaffold to launch the lead design and its topology later verified by crosschecking the computational mutagenesis results with that of in vitro data. Thereafter, the interactions of prime Aβ-binding LD residues- Tyr101, Thr108, and Thr110 were translated into specific pharmacophore features and this hypothesis subsequently used as a virtual screen query...
June 29, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28642874/combination-treatment-with-ppar%C3%AE-ligand-and-its-specific-inhibitor-gw9662-downregulates-bis-and-14-3-3-gamma-inhibiting-stem-like-properties-in-glioblastoma-cells
#5
Chang-Nim Im
PPARγ is a nuclear receptor that regulates differentiation and proliferation and is highly expressed in many cancer cells. Its synthetic ligands, such as rosiglitazone and ciglitazone, and its inhibitor GW9662, were shown to induce cellular differentiation, inhibit proliferation, and lead to apoptosis. Glioblastoma is a common brain tumor with poor survival prospects. Recently, glioblastoma stem cells (GSCs) have been examined as a potential target for anticancer therapy; however, little is known about the combined effect of various agents on GSCs...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28630003/effects-of-mild-calorie-restriction-on-lipid-metabolism-and-inflammation-in-liver-and-adipose-tissue
#6
Chan Yoon Park, Soyoung Park, Min Soo Kim, Hye-Kyeong Kim, Sung Nim Han
Calorie restriction (CR) has been reported to improve lipid metabolism and to decrease inflammatory diseases. However, most existing CR models use 30-50% calorie reduction, which is hard to achieve in humans. We investigated the effects of mild CR on lipid metabolism and inflammatory responses. Male C57BL/6 mice were fed control diet (10% kcal fat, Control) or high fat diet (60% kcal fat, HFD) ad libitum or reduced amount of control diet to achieve 15% CR for 16 wks. Body weights, white adipose tissue weights, liver triacylglycerol levels, and serum fetuin-A levels were lower in CR than in the Control...
June 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28629051/novel-biomimetic-composite-material-for-potentiometric-screening-of-acetylcholine-a-neurotransmitter-in-alzheimer-s-disease
#7
Ana S Sacramento, Felismina T C Moreira, Joana L Guerreiro, Ana P Tavares, M Goreti F Sales
This work describes a novel approach to produce an antibody-like biomimetic material. It includes preparing composite imprinted material never presented before, with highly conductive support nanostructures and assembling a high conductivity polymeric layer at low temperature. Overall, such highly conductive material may enhance the final features of electrically-based devices. Acetylcholine (ACh) was selected as target analyte, a neurotransmitter of importance in Alzheimer's disease. Potentiometric transduction was preferred, allowing quick responses and future adaptation to point-of-care requirements...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28612401/safety-and-effectiveness-of-collagenase-clostridium-histolyticum-cch-xiapex-%C3%A2-in-the-treatment-of-peyronie-s-disease-using-a-new-modified-shortened-protocol
#8
Amr Abdel Raheem, Marco Capece, Odunayo Kalejaiye, Tarek Abdel-Raheem, Marco Falcone, Mark Johnson, Oliver George Ralph, Giulio Garaffa, Andrew Nim Christopher, David John Ralph
OBJECTIVES: To evaluate the efficacy and safety of collagenase clostridium histolyticum (CCH) (Xiapex(®) , Xiaflex(®) ) in the treatment of Peyronie's disease (PD) using a new modified treatment protocol which aims at reducing the number of injections needed and reducing patient visits, thus reducing the cost and duration of treatment. PATIENTS AND METHODS: A prospective study of 53 patients with PD who had treatment with CCH at a single center using a new modified protocol...
June 14, 2017: BJU International
https://www.readbyqxmd.com/read/28601931/cardiotrophin-1-stimulates-the-neural-differentiation-of-human-umbilical-cord-blood-derived-mesenchymal-stem-cells-and-survival-of-differentiated-cells-through-pi3k-akt-dependent-signaling-pathways
#9
Longying Peng, Xiaomei Shu, Changhui Lang, Xiaohua Yu
Cardiotrophin-1 (CT1) plays an important role in the differentiation, development, and survival of neural stem cells. In this study, we analyzed its effects on the stimulation of human umbilical cord blood-derived mesenchymal stem cells in terms of their potential to differentiate into neuron-like cells, their survival characteristics, and the molecular mechanisms involved. The treatment of cells with neural induction medium (NIM) and CT1 generated more cells that were neuron-like and produced stronger expression of neural-lineage markers than cells treated with NIM and without CT1...
June 10, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28593442/remodeling-of-heterochromatin-structure-slows-neuropathological-progression-and-prolongs-survival-in-an-animal-model-of-huntington-s-disease
#10
Junghee Lee, Yu Jin Hwang, Yunha Kim, Min Young Lee, Seung Jae Hyeon, Soojin Lee, Dong Hyun Kim, Sung Jae Jang, Hyoenjoo Im, Sun-Joon Min, Hyunah Choo, Ae Nim Pae, Dong Jin Kim, Kyung Sang Cho, Neil W Kowall, Hoon Ryu
Huntington's disease (HD) is an autosomal-dominant inherited neurological disorder caused by expanded CAG repeats in exon 1 of the Huntingtin (HTT) gene. Altered histone modifications and epigenetic mechanisms are closely associated with HD suggesting that transcriptional repression may play a pathogenic role. Epigenetic compounds have significant therapeutic effects in cellular and animal models of HD, but they have not been successful in clinical trials. Herein, we report that dSETDB1/ESET, a histone methyltransferase (HMT), is a mediator of mutant HTT-induced degeneration in a fly HD model...
June 7, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28587923/generation-and-validation-of-intracellular-ubiquitin-variant-inhibitors-for-usp7-and-usp10
#11
Wei Zhang, Maria A Sartori, Taras Makhnevych, Kelly E Federowicz, Xiaohui Dong, Li Liu, Satra Nim, Aiping Dong, Jingsong Yang, Yanjun Li, Dania Haddad, Andreas Ernst, Dirk Heerding, Yufeng Tong, Jason Moffat, Sachdev S Sidhu
Post-translational modification of the p53 signaling pathway plays an important role in cell cycle progression and stress-induced apoptosis. Indeed, a large body of work has shown that dysregulation of p53 and its E3 ligase MDM2 by the ubiquitin-proteasome system (UPS) promotes carcinogenesis and malignant transformation. Thus, drug discovery efforts have focused on the restoration of wild-type p53 activity or inactivation of oncogenic mutant p53 by targeted inhibition of UPS components, particularly key deubiquitinases (DUBs) of the ubiquitin-specific protease (USP) class...
June 3, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28574722/socioeconomic-status-amygdala-volume-and-internalizing-symptoms-in-children-and-adolescents
#12
Emily C Merz, Nim Tottenham, Kimberly G Noble
The associations among socioeconomic disadvantage, amygdala volume, and internalizing symptoms in children and adolescents are unclear and understudied in the extant literature. In this study, we examined associations between socioeconomic status (SES) and amygdala volume by age across childhood and adolescence to test whether socioeconomic disadvantage would be associated with larger amygdala volume at younger ages but with smaller amygdala volume at older ages. We then examined whether SES and amygdala volume were associated with children's levels of anxiety and depression...
June 2, 2017: Journal of Clinical Child and Adolescent Psychology
https://www.readbyqxmd.com/read/28520405/morphology-driven-control-of-metabolite-selectivity-using-nanostructure-initiator-mass-spectrometry
#13
Jian Gao, Katherine B Louie, Philipp Steinke, Benjamin P Bowen, Markus de Raad, Ronald N Zuckermann, Gary Siuzdak, Trent R Northen
Nanostructure-initiator mass spectrometry (NIMS) is a laser desorption/ionization analysis technique based on the vaporization of a nanostructure-trapped liquid "initiator" phase. Here we report an intriguing relationship between NIMS surface morphology and analyte selectivity. Scanning electron microscopy and spectroscopic ellipsometry were used to characterize the surface morphologies of a series of NIMS substrates generated by anodic electrochemical etching. Mass spectrometry imaging was applied to compare NIMS sensitivity of these various surfaces toward the analysis of diverse analytes...
May 26, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28516109/serum-derived-bovine-immunoglobulin-as-novel-adjunct-in-complicated-clostridium-difficile-colitis-treatment
#14
Samson Ferm, Nims Varadi, Constantine Fisher, Ellen Gutkin
Clostridium difficile infection (CDI) is a well-known complication of antibiotic therapy. It is associated with significant morbidity, mortality, and cost in the hospital setting. The main symptoms include watery diarrhea, abdominal pain, and distension, but CDI can also present as toxic megacolon, bowel perforation with peritonitis, sepsis and renal failure. Therapy includes metronidazole and oral vancomycin, with rectal vancomycin and fecal transplant reserved for more complicated cases. Adjunctive treatments such as probiotics have been tried with mixed results...
2017: ACG Case Reports Journal
https://www.readbyqxmd.com/read/28502165/grape-seed-proanthocyanidin-inhibits-mucin-synthesis-and-viral-replication-by-suppression-of-ap-1-and-nf-%C3%AE%C2%BAb-via-p38-mapks-jnk-signaling-pathways-in-respiratory-syncytial-virus-infected-a549-cells
#15
Jin-Woo Lee, Young Il Kim, Chang-Nim Im, Sung Wan Kim, Su Jin Kim, Seoyeon Min, Yong Hoon Joo, Sung-Vin Yim, Namhyun Chung
Airway epithelial cells are often infected by respiratory syncytial virus (RSV), one of the most common causes of asthma, bronchiolitis, chronic obstructive pulmonary disease, and pneumonia. During the infection process, excessive mucins instigate airway inflammation. However, the mechanism underlying RSV-induced airway hyper-responsiveness and inflammation is poorly understood. Furthermore, no reliable vaccines or drugs for antiviral therapy are available. In this study, the effect of the natural compound grape seed proanthocyanidin (GSP) on RSV-infected human airway epithelial cells A549 was evaluated...
June 7, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28492973/fast-therapeutic-hypothermia-prevents-post-cardiac-arrest-syndrome-through-cyclophilin-d-mediated-mitochondrial-permeability-transition-inhibition
#16
Vincent Jahandiez, Martin Cour, Thomas Bochaton, Maryline Abrial, Joseph Loufouat, Abdallah Gharib, Annie Varennes, Michel Ovize, Laurent Argaud
The opening of the mitochondrial permeability transition pore (PTP), which is regulated by the matrix protein cyclophilin D (CypD), plays a key role in the pathophysiology of post-cardiac arrest (CA) syndrome. We hypothesized that therapeutic hypothermia could prevent post-CA syndrome through a CypD-mediated PTP inhibition in both heart and brain. In addition, we investigated whether specific pharmacological PTP inhibition would confer additive protection to cooling. Adult male New Zealand White rabbits underwent 15 min of CA followed by 120 min of reperfusion...
July 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28479022/lathyrol-and-epoxylathyrol-derivatives-modulation-of-cdr1p-and-mdr1p-drug-efflux-transporters-of-candida-albicans-in-saccharomyces-cerevisiae-model
#17
Andreia Mónico, Shweta Nim, Noélia Duarte, Manpreet Kaur Rawal, Rajendra Prasad, Attilio Di Pietro, Maria-José U Ferreira
Macrocyclic diterpenes were previously found to be able to modulate the efflux pump activity of Candida albicans multidrug transporters. Most of these compounds were jatrophanes, but only a few number of lathyrane-type diterpenes was evaluated. Therefore, the aim of this study was to evaluate the ability of nineteen structurally-related lathyrane diterpenes (1-19) to overcome the drug-efflux activity of Cdr1p and Mdr1p transporters of C. albicans, and get some insights on their structure-activity relationships...
July 1, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28470288/c-si-n-zno-based-flexible-solar-cells-with-silica-nanoparticles-as-a-light-trapping-metamaterial
#18
Arijit Bardhan Roy, Sonali Das, Avra Kundu, Chandan Banerjee, Nillohit Mukherjee
Herein, we report the fabrication of flexible solar cells based on a crystalline p-Si/n-ZnO heterostructure for the first time. An enhancement of ∼52% in the base efficiency was achieved by the application of spherical SiO2 nanoparticles as light trapping structures on the top. The use of ZnO not only offers a facile route of synthesis, but also provides an additional advantage of large band bending, leading to notable open circuit voltage and formation of an intermediate ultra-thin barrier layer of Zn2SiO4 for minimized carrier recombination...
May 24, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28467051/openmsi-arrayed-analysis-toolkit-analyzing-spatially-defined-samples-using-mass-spectrometry-imaging
#19
Markus de Raad, Tristan de Rond, Oliver Rübel, Jay D Keasling, Trent R Northen, Benjamin P Bowen
Mass spectrometry imaging (MSI) has primarily been applied in localizing biomolecules within biological matrices. Although well-suited, the application of MSI for comparing thousands of spatially defined spotted samples has been limited. One reason for this is a lack of suitable and accessible data processing tools for the analysis of large arrayed MSI sample sets. The OpenMSI Arrayed Analysis Toolkit (OMAAT) is a software package that addresses the challenges of analyzing spatially defined samples in MSI data sets...
June 6, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28466123/the-role-of-quantitative-estrogen-receptor-status-in-predicting-tumor-response-at-surgery-in-breast-cancer-patients-treated-with-neoadjuvant-chemotherapy
#20
REVIEW
Jacques Raphael, Sonal Gandhi, Nim Li, Fang-I Lu, Maureen Trudeau
PURPOSE: Estrogen receptor (ER) negative (-) breast cancer (BC) patients have better tumor response rates than ER-positive (+) patients after neoadjuvant chemotherapy (NCT). We conducted a retrospective review using the institutional database "Biomatrix" to assess the value of quantitative ER status in predicting tumor response at surgery and to identify potential predictors of survival outcomes. METHODS: Univariate followed by multivariable regression analyses were conducted to assess the association between quantitative ER and tumor response assessed as tumor size reduction and pathologic complete response (pCR)...
May 2, 2017: Breast Cancer Research and Treatment
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