Read by QxMD icon Read


Jong-Sup Jeon, Han-Taek Kim, Il-Hyung Jeong, Se-Ra Hong, Moon-Seog Oh, Kwang-Hee Park, Jae-Han Shim, A M Abd El-Aty
Coffee, a complex mixture of more than 800 volatile compounds, is one of the most valuable commodity in the world, whereas caffeine and chlorogenic acids (CGAs) are the most common compounds. CGAs are mainly composed of caffeoylquinic acids (CQAs), dicaffeoylquinic acids (diCQAs), and feruloylquinic acids (FQAs). The major CGAs in coffee are neochlorogenic acid (3-CQA), cryptochlorogenic acid (4-CQA), and chlorogenic acid (5-CQA). Many studies have shown that it is possible to separate the isomers of FQAs by high-performance liquid chromatography (HPLC)...
August 31, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Salman Ul Islam, Adeeb Shehzad, Jong Kyung Sonn, Young Sup Lee
Pre-mRNA processing factor (PRPF) 4B kinase belongs to the CDK-like kinase family, and is involved in pre-mRNA splicing, and in signal transduction. In this study, we observed that PRPF overexpression decreased the intracellular levels of reactive oxygen species, and inhibited resveratrol-induced apoptosis by activating the cell survival signaling proteins NFκB, ERK, and c-MYC in HCT116 human colon cancer cells. PRPF overexpression altered cellular morphology, and rearranged the actin cytoskeleton, by regulating the activity of Rho family proteins...
August 22, 2017: Oncotarget
Jennifer N Harb, Alexandra L Owens, Kathryn Mooneyham Potter, Michael Montuno, Reordan O De Jesus, Sailesh Konda
Cutaneous squamous cell carcinoma (cSCC) is the most common skin cancer diagnosed in African Americans.<sup>1</sup> Twenty to forty percent of cSCCs reported in African Americans are related to chronic scarring processes or areas of in ammation.<sup>2</sup> Risk factors for developing cSCCs in patients of color include chronic scars resulting from burns, skin ulcers, and radiation sites; and chronic inflammatory diseases such as discoid lupus and hidradenitis suppuritiva.<sup>1</sup> Although skin cancer only accounts for 1% to 2% of cancers diagnosed within African Americans, it is associated with increased morbidity and mortality in this population...
January 1, 2017: Journal of Drugs in Dermatology: JDD
Jaehong Kim, Jong-Sup Bae
PURPOSE OF REVIEW: Insight into the metabolic changes in cancer has become so important that cancer is regarded as a disease entity full of metabolic implications. We summarize the recent findings pertaining to cancer cell-derived metabolic changes that regulate the function of macrophages to favor cancer cell survival, and the reported approaches to reverse these changes. RECENT FINDINGS: Since the observation and dramatic revitalization of the Warburg effect, metabolic changes were thought to be confined in cancer cells...
September 13, 2017: Current Opinion in Hematology
K T Ng, M Gillies, D M Griffith
Nicotine replacement therapy is widely used in critically ill smokers and its effect on delirium, mortality and duration of intensive care unit (ICU) admission is unknown. The aims of this review were to determine whether the management of nicotine withdrawal with nicotine replacement therapy reduces delirium, mortality or length of stay in critically ill smokers in ICU. The primary outcome was incidence of author-defined ICU delirium. Secondary outcomes were ICU or hospital mortality, ICU-free days at day 28, and ICU or hospital length of stay...
September 2017: Anaesthesia and Intensive Care
Shrawan Roy, C Muhammed Ajmal, Seunghyun Baik, Jeongyong Kim
Surface-enhanced Raman scattering (SERS) has received considerable attention as a noninvasive optical sensing technique with ultrahigh sensitivity. While numerous types of metallic particles have been actively investigated as SERS substrates, the development of new SERS agents with high sensitivity and their reliable characterization are still required. Here we report the preparation and characterization of flower-shaped silver (Ag) nanoparticles that exhibit high-sensitivity single-particle SERS performance...
September 13, 2017: Nanotechnology
Masami Tanaka, Yuko Shimizu
At the end of 2016, dimethyl fumarate (DMF) was approved as the sixth disease-modifying drug for multiple sclerosis by the Pharmaceuticals and Medical Devices Agency of Japan. Two randomized, placebo-controlled, phase III studies (DEFINE and CONFIRM) showed beneficial effects in patients in Western countries, with relapsing-remitting multiple sclerosis (RRMS). Some of the benefits included a decreased annual relapse rate, inhibition of disease activity (shown using brain magnetic resonance imaging), and a decreased proportion of patients with confirmed disease progression...
September 2017: Brain and Nerve, Shinkei Kenkyū No Shinpo
Sachiko Tsugawa, Shin-Ichiro Luke Nakajima
Recent advancement in magnetic resonance spectroscopy (MRS) has elucidated the pathophysiology of mental illness, including schizophrenia. MRS is a neuroimaging technique that non-invasively measures chemicals, using nuclear magnetic resonance. This narrative review explains proton MRS (<sup>1</sup>H-MRS) and introduces pivotal studies to examine a glutamate hypothesis for schizophrenia, employing <sup>1</sup>H-MRS.
September 2017: Brain and Nerve, Shinkei Kenkyū No Shinpo
Mogwale Samson Motebejane, Ian Kaminsky, Basil Claude Enicker, Tonya Esterhuizen, In Sup Choi
No abstract text is available yet for this article.
September 1, 2017: Neurosurgery
Ronan M G Berg, Sarah Taudorf, Damian Miles Bailey, Rasmus Holmboe Dahl, Carsten Lundby, Kirsten Møller
The systemic inflammatory response triggered by lipopolysaccharide (LPS) is associated with cerebral vasoconstriction, but the underlying mechanisms are unknown. We therefore examined whether a four-hour intravenous LPS infusion (0.3 ng kg<sup>-1</sup>) induces any changes in the transcerebral net exchange of the vasoactive peptides endothelin-1 (ET-1) and calcitonin-gene related peptide (CGRP) and catecholamines in human volunteers. Cerebral blood flow was measured by the Kety-Schmidt technique, and paired arterial-to-jugular venous blood samples were obtained for estimating the transcerebral exchange of ET-1, CGRP and catecholamines by the Fick principle in twelve volunteers before and after LPS...
September 12, 2017: Canadian Journal of Physiology and Pharmacology
Jiwhan Kim, Hee-Eun Kim, Hyunjoo Lee
Single-atom catalysts (SACs), where the metal atom is dispersed on the support without forming nanoparticles, have been used for various heterogeneous reactions and most recently for electro-chemical reactions. In this mini-review, we introduce recent exam-ples of single-atom electrocatalysts used for the oxygen reduction reaction (ORR), hydrogen oxidation reaction (HOR), hydrogen evo-lution reaction (HER), formic acid oxidation reaction (FAOR), and methanol oxidation reaction (MOR). Many density functional theory (DFT) simulations have predicted that SACs may be effective for CO2 reduction towards methane or methanol production while sup-pressing H2 evolution, and those cases are introduced here as well...
September 11, 2017: ChemSusChem
Hee Sup Shin, Chang-Woo Ryu, Hak Cheol Ko, Soonchan Park, Sang-Beom Kim
BACKGROUND AND PURPOSE: Isolated chronic middle cerebral artery occlusion (ChMCAO) is not a rare condition, and it is known to cause hemodynamic stroke. The purpose of this study was to evaluate differences in the clinical manifestations and prognosis of isolated ChMCAO in relation to angiographic features. METHODS: Fifty-six patients with isolated ChMCAO were enrolled in this retrospectively study. In accordance with the degree of antegrade collateral flow (AF) on angiography, patients were categorized into poor and good AF groups...
September 8, 2017: World Neurosurgery
H Yamaoka, Patrik Thunström, Naohito Tsujii, Kenichi Katoh, Yoshiya Yamamoto, Eike F Schwier, Kenya Shimada, Hideaki Iwasawa, Masashi Arita, Ignace Jarrige, Nozomu Hiraoka, Hirofumi Ishii, K D Tsuei, Jun'ichiro MIzuki
Electronic structures of ferromagnetic heavy fermion Yb compounds of YbPdSi, YbPdGe, and YbPtGe are studied by photoelectron spectroscopy around the Yb 4<u>d</u>-4<i>f</i> resonance, resonant x-ray emission spectroscopy at the Yb <i>L</i><sub>3</sub> absorption edge, and density functional theory combined with dynamical mean field theory calculations. These compounds are all having a temperature independent intermediate Yb valence with large Y<sup>b3+</sup> and small Yb<sup>2+</sup> components...
September 11, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
Man Kit Cheng, Jing Liang, Ying-Hoi Lai, Liang-Xi Pang, Yi Liu, Junying Shen, Jianqiang Hou, Qing Lin He, Bochao Xu, Junshu Chen, Gan Wang, Chang Liu, Rolf Lortz, Iam Keong Sou
We have developed an incandescent Mo source to fabricate large-area single-crystalline MoSe<sub>2</sub> thin films. The as-grown MoSe<sub>2</sub> thin films were characterized using transmission electron spectroscopy, energy dispersive X-ray analysis, atomic force microscopy, Raman spectroscopy, photoluminescence, reflection high energy electron diffraction (RHEED) and angular resolved photoemission spectroscopy (ARPES). A new Raman characteristic peak at 1591 cm<sup>-1</sup> was identified...
September 11, 2017: Nanotechnology
Malik Nassan, Yun-Fang Jia, Greg Jenkins, Colin Colby, Scott Feeder, Doo-Sup Choi, Marin Veldic, Susan L McElroy, David J Bond, Richard Weinshilboum, Joanna M Biernacka, Mark A Frye
In a prior discovery study, increased levels of serum Growth Differentiation Factor 15 (GDF15), Hepsin (HPN), and Matrix Metalloproteinase-7 (MMP7) were observed in bipolar depressed patients vs controls. This exploratory post-hoc analysis applied a proteomic-informed genomic research strategy to study the potential functional role of these proteins in bipolar disorder (BP). Utilizing the Genotype-Tissue Expression (GTEx) database to identify cis-acting blood expression quantitative trait loci (cis-eQTLs), five eQTL variants from the HPN gene were analyzed for association with BP cases using genotype data of cases from the discovery study (n = 58) versus healthy controls (n = 777)...
July 4, 2017: Journal of Psychiatric Research
Ilaria Mattei, Giuseppe Battistoni, Francesco Collini, Erika De Lucia, Marco Durante, Salvatore Fiore, Chiara Latessa, Carlo Mancini-Terracciano, Michela Marafini, Riccardo Mirabelli, Silvia Muraro, Riccardo Paramatti, Luca Piersanti, Antoni Rucinski, Andrea Russomando, Alessio Sarti, Christoph Schuy, Adalberto Sciubba, Elena Solfaroli Camillocci, Marco Toppi, Giacomo Traini, Serena Marta Valle, Marie Vanstalle, Vincenzo Patera
In this paper we report the re-analysis of the data published in (Piersanti et al. 2014) documenting the charged secondary particles production induced by the interaction of a 220 MeV/u 12C ion beam impinging on a polymethyl methacrylate (PMMA) target, measured in 2012 at the GSI facility in Darmstadt (Germany). This re-analysis takes into account the inhomogeneous light response of the LYSO crystal in the experimental setup measured in a subsequent experiment (2014) performed in the Heidelberg Ion- Beam Therapy Center...
September 8, 2017: Physics in Medicine and Biology
Fabian Fritz, Rasmus Westerström, Aram Kostanyan, Christin Schlesier, Jan Dreiser, Benjamin Watts, Lothar Houben, Martina Luysberg, Stanislav M Avdoshenko, Alexey Popov, Claus M Schneider, Carola Meyer
Endohedral lanthanide ions packed inside carbon nanotubes (CNTs) in a one-dimensional assembly have been studied with a combination of high resolution transmission electron microscopy (HRTEM), scanning transmission X-ray microscopy (STXM), and X-ray magnetic circular dichroism (XMCD). By correlating HRTEM and STXM images we show that structures down to 30 nm are resolved with chemical contrast and record X-ray absorption spectra from endohedral lanthanide ions embedded in individual nanoscale CNT bundles. XMCD measurements of an Er<sub>3</sub>N@C<sub>80</sub> bulk sample and a macroscopic assembly of filled CNTs indicates that the magnetic properties of the endohedral Er<sup>3+</sup> ions are unchanged when encapsulated in CNTs...
September 8, 2017: Nanotechnology
Yukio Iwashita, Taizo Hibi, Tetsuji Ohyama, Akiko Umezawa, Tadahiro Takada, Steven M Strasberg, Horacio J Asbun, Henry A Pitt, Ho-Seong Han, Tsann-Long Hwang, Kenji Suzuki, Yoo-Seok Yoon, In-Seok Choi, Dong-Sup Yoon, Wayne Shih-Wei Huang, Masahiro Yoshida, Go Wakabayashi, Fumihiko Miura, Kohji Okamoto, Itaru Endo, Eduardo de Santibanes, Mariano Eduardo Giménez, John A Windsor, James Garden, Dirk J Gouma, Daniel Cherqui, Giulio Belli, Christos Dervenis, Daniel J Deziel, Eduard C Jonas, Palepu Jagannath, Avinash Nivritti Supe, Harjit Singh, Kui-Hin Liau, Xiao-Ping Chen, Angus C W Chan, Wan Yee Lau, Sheung Tat Fan, Miin-Fu Chen, Myung-Hwan Kim, Goro Honda, Atsushi Sugioka, Koji Asai, Keita Wada, Yasuhisa Mori, Ryota Higuchi, Takeshi Misawa, Manabu Watanabe, Naoki Matsumura, Toshiki Rikiyama, Naohiro Sata, Nobuyasu Kano, Hiromi Tokumura, Taizo Kimura, Seigo Kitano, Masafumi Inomata, Koichi Hirata, Yoshinobu Sumiyama, Kazuo Inui, Masakazu Yamamoto
BACKGROUND: Bile duct injury (BDI) during laparoscopic cholecystectomy remains a serious iatrogenic surgical complication. BDI most often occurs as a result of misidentification of the anatomy; however, clinical evidence on its precise mechanism and surgeons' perceptions is scarce. METHODS: Surgeons from Japan, Korea, Taiwan, and the U.S., etc. (n = 614) participated in a questionnaire regarding their BDI experience and near-misses; and perceptions on landmarks, intraoperative findings, and surgical techniques...
September 8, 2017: Journal of Hepato-biliary-pancreatic Sciences
Futoshi Komine, Shingo Kamio, Hiroki Takata, Shogo Yagawa, Serina Taguchi, Kohei Taguchi, Akiko Hashiguchi, Hideo Matsumura
This study evaluated the effect of zirconia framework design on fracture load of implant-supported zirconia-based prostheses after thermal cycling and mechanical loading. Three different zirconia framework designs were investigated: uniform-thickness (UNI), anatomic (ANA), and supported anatomic (SUP) designs. Each framework was layered with feldspathic porcelain (ZAC group) or indirect composite material (ZIC group). The specimens then underwent fracture load testing after thermal cycling and cyclic loading...
September 7, 2017: Dental Materials Journal
Jan-David Liebe, Moritz Esdar, Johannes Thye, Ursula Hübner
CIOs' innovation capability is regarded as a precondition of successful HIT adoption in hospitals. Based on the data of 142 CIOs, this study aimed at identifying antecedents of perceived innovation capability. Eight features describing the status quo of the hospital IT management (e.g. use of IT governance frameworks), four features of the hospital structure (e.g. functional diversification) and four CIO characteristics (e.g. duration of employment) were tested as potential antecedents in an exploratory stepwise regression approach...
2017: Studies in Health Technology and Informatics
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"