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https://www.readbyqxmd.com/read/28433834/antimicrobial-and-anticancer-photodynamic-activity-of-a-phthalocyanine-photosensitizer-with-n-methyl-morpholiniumethoxy-substituents-in-non-peripheral-positions
#1
Jolanta Dlugaszewska, Wojciech Szczolko, Tomasz Koczorowski, Paulina Skupin-Mrugalska, Anna Teubert, Krystyna Konopka, Malgorzata Kucinska, Marek Murias, Nejat Düzgüneş, Jadwiga Mielcarek, Tomasz Goslinski
Photodynamic therapy involves the use of a photosensitizer that is irradiated with visible light in the presence of oxygen, resulting in the formation of reactive oxygen species. A novel phthalocyanine derivative, the quaternary iodide salt of magnesium(II) phthalocyanine with N-methyl morpholiniumethoxy substituents, was synthesized, and characterized. The techniques used included mass spectrometry (MALDI TOF), UV-vis, NMR spectroscopy, and photocytotoxicity against bacteria, fungi and cancer cells. The phthalocyanine derivative possessed typical characteristics of compounds of the phthalocyanine family but the effect of quaternization was observed on the optical properties, especially in terms of absorption efficiency...
April 8, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28431987/patterns-of-brain-and-cardiovascular-activation-while-solving-rule-discovery-and-rule-application-numeric-tasks
#2
Tytus Sosnowski, Andrzej Rynkiewicz, Małgorzata Wordecha, Anna Kępkowicz, Adrianna Majewska, Aleksandra Pstrągowska, Tomasz Oleksy, Marek Wypych, Artur Marchewka
It is known that solving mental tasks leads to tonic increase in cardiovascular activity. Our previous research showed that tasks involving rule application (RA) caused greater tonic increase in cardiovascular activity than tasks requiring rule discovery (RD). However, it is not clear what brain mechanisms are responsible for this difference. The aim of two experimental studies was to compare the patterns of brain and cardiovascular activity while both RD and the RA numeric tasks were being solved. The fMRI study revealed greater brain activation while solving RD tasks than while solving RA tasks...
April 18, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/28431054/the-variability-of-automated-qrs-duration-measurement
#3
Vlastimil Vancura, Dan Wichterle, Ivan Ulc, Jirí Šmíd, Marek Brabec, Marta Zárybnická, Richard Rokyta
Aims: Previous studies have demonstrated substantial variability in manual assessment of QRS complex duration (QRSd). Disagreements in QRSd measurements were also found in several automated algorithms tested on digitized electrocardiogram (ECG) recordings. The aim of our study was to investigate the variability of automated QRSd measurements performed by two commercially available electrocardiographs. Methods and Results: Two GE MAC 5000 (GE-1 and GE-2) electrocardiographs and two Mortara ELI 350 (Mortara-1 and Mortara-2) electrocardiographs were used in the study...
April 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28429117/a-comparison-of-mcgrath-mac%C3%A2-and-standard-direct-laryngoscopy-in-simulated-immobilized-cervical-spine-pediatric-intubation-a-manikin-study
#4
Marcin Madziala, Jacek Smereka, Marek Dabrowski, Steve Leung, Kurt Ruetzler, Lukasz Szarpak
Emergency airway management in children is generally considered to be challenging, and endotracheal intubation requires a high level of personal skills and experience. Immobilization of the cervical spine is indicated in all patients with the risk of any cervical spine injury but significantly aggravates endotracheal intubation. The best airway device in this setting has not been established yet, although the use of videolaryngoscopes is generally promising. Seventy-five moderately experienced paramedics of the Emergency Medical Service of Poland performed endotracheal intubations in a pediatric manikin in three airway scenarios: (A) normal airway, (B) manual in-line cervical immobilization, and (C) cervical immobilization using a Patriot cervical extrication collar and using two airway techniques: (1) McGrath videolaryngoscope and (2) Macintosh blade in a randomized sequence...
April 21, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28428274/egfr-mediates-responses-to-small-molecule-drugs-targeting-oncogenic-fusion-kinases
#5
Aria Vaishnavi, Laura Schubert, Uwe Rix, Lindsay A Marek, Anh T Le, Stephen Keysar, Magdalena J Glogowska, Matthew A Smith, Severine L Kako, Natalia J Sumi, Kurtis D Davies, Kathryn E Ware, Marileila Varella-Garcia, Eric B Haura, Antonio Jimeno, Lynn E Heasley, Dara L Aisner, Robert C Doebele
Oncogenic kinase fusions of ALK, ROS1, RET and NTRK1 act as drivers in human lung and other cancers. Residual tumor burden following treatment of ALK or ROS1+ lung cancer patients with oncogene-targeted therapy ultimately enables the emergence of drug-resistant clones, limiting the long-term effectiveness of these therapies. To determine the signaling mechanisms underlying incomplete tumor cell killing in oncogene-addicted cancer cells, we investigated the role of EGFR signaling in drug-naive cancer cells harboring these oncogene fusions...
April 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28428000/selected-oxidative-stress-biomarkers-in-antenatal-diagnosis-as-11-14-gestational-weeks
#6
Marek Pietryga, Piotr Dydowicz, Kinga Toboła, Marta Napierała, Izabela Miechowicz, Anna Gąsiorowska, Maciej Brązert, Ewa Florek
The primary objective in modern obstetrics and prenatal diagnosis is to predict risks of congenital abnormalities. The aim of the research was to assess the correlation between selected oxidative stress biomarkers with the risk of foetal chromosomal aberration evaluated at the first trimester screening. A series of studies show that balanced free radical activity and oxidative homeostasis are essential for proper bodily growth and function. Reactive oxygen species (ROS) may be one of the factors associated with disruption of cell cycle and tissue development, thus leading to developmental abnormalities...
April 17, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28427245/the-impact-of-dids-induced-inhibition-of-voltage-dependent-anion-channels-vdac-on-cellular-response-of-lymphoblastoid-cells-to-ionizing-radiation
#7
Magdalena Skonieczna, Artur Cieślar-Pobuda, Yuriy Saenko, Marek Foksiński, Ryszard Oliński, Joanna Rzeszowska-Wolny, Emilia Wiechec
No abstract text is available yet for this article.
April 21, 2017: Medicinal Chemistry
https://www.readbyqxmd.com/read/28426335/chaplaincy-encounters-following-a-suicide-attempt
#8
Marek S Kopacz, Cathleen P Kane, Wilfred R Pigeon, Jason A Nieuwsma
This descriptive study examines the provision of chaplaincy services to veterans who sought health care at a Department of Veterans Affairs (VA) Medical Center following a suicide attempt. A system-wide VA database of suicidal behavior was used to identify a cohort of n = 22,701 veterans who survived a suicide attempt. Next, an electronic review of VA clinical records found that n = 7,447 (32.8%) received chaplaincy services in the 30 days following their attempt. Of this group, the overwhelming majority of first chaplaincy encounters took place in in-patient settings: n = 6890 (92...
April 20, 2017: Journal of Health Care Chaplaincy
https://www.readbyqxmd.com/read/28425683/preservation-of-duodenal-passage-as-a-determinant-of-short-and-long-term-quality-of-life-in-gastric-cancer-patients-after-total-gastrectomy
#9
Tomasz Olesiński, Marek Szpakowski, Piotr Saramak, Andrzej Rutkowski, Krzysztof Jeziorski
BACKGROUND: The aim of this prospective study was to compare subjective and objective quality of life (QoL) of gastric cancer patients after total gastrectomy with and without preservation of the duodenal passage during short- and long-term follow-up. METHODS: The study included 68 patients, among them 37 (54%) persons subjected to total gastrectomy with Roux-Y reconstruction (R-Y group) and 31 (46%) individuals in whom gastrectomy was followed by formation of Henley-Longmire loop (H-L group)...
April 19, 2017: Minerva Chirurgica
https://www.readbyqxmd.com/read/28425469/in-plastico-laboratory-material-newness-affects-growth-and-reproduction-of-daphnia-magna-reared-in-50-ml-polypropylene-tubes
#10
Marek Cuhra, Thomas Bøhn, Petr Cuhra
Plastic laboratory materials are found to affect vital parameters of the waterflea Daphnia magna. The main responsible factor is defined as "newness" of the materials. Juvenile D. magna were raised individually in; a) new laboratory-standard 50 ml polypropylene tubes, and; b) identical tubes which had been washed and aerated for several weeks. Newness had significant effects on growth and fecundity of D. magna. New tubes caused delayed maturation, reduced reproduction and reduced growth when compared to washed and re-used tubes of the same commercial brand...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28423750/design-implementation-and-operation-of-a-reading-center-platform-for-clinical-studies
#11
Lucien Clin, Martin A Leitritz, Johannes Dietter, Marek Dynowski, Oliver Burgert, Marius Ueffing, Christian Thies
Clinical reading centers provide expertise for consistent, centralized analysis of medical data gathered in a distributed context. Accordingly, appropriate software solutions are required for the involved communication and data management processes. In this work, an analysis of general requirements and essential architectural and software design considerations for reading center information systems is provided. The identified patterns have been applied to the implementation of the reading center platform which is currently operated at the Center of Ophthalmology of the University Hospital of Tübingen...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28421174/utility-of-cardiovascular-magnetic-resonance-derived-wave-intensity-analysis-as-a-marker-of-ventricular-function-in-children-with-heart-failure-and-normal-ejection-fraction
#12
Hopewell N Ntsinjana, Robin Chung, Paolo Ciliberti, Vivek Muthurangu, Silvia Schievano, Jan Marek, Kim H Parker, Andrew M Taylor, Giovanni Biglino
OBJECTIVE: This study sought to explore the diagnostic insight of cardiovascular magnetic resonance (CMR)-derived wave intensity analysis to better study systolic dysfunction in young patients with chronic diastolic dysfunction and preserved ejection fraction (EF), comparing it against other echocardiographic and CMR parameters. BACKGROUND: Evaluating systolic and diastolic dysfunctions in children is challenging, and a gold standard method is currently lacking...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28420862/clinical-characteristics-treatment-and-prognosis-of-patients-with-acute-severe-heart-failure-of-ischemic-and-non-ischemic-etiology-analysis-from-the-commit-ahf-registry
#13
Mateusz Ostręga, Marek J Gierlotka, Grzegorz Słonka, Paweł Nadziakiewicz, Mariusz Gąsior
INTRODUCTION    There are limited data on the impact of ischemic etiology on clinical status and long-term prognosis among patients with acute severe heart failure (ASHF) not associated with acute coronary syndrome (ACS).  OBJECTIVES    To assess clinical characteristics, treatment and the 12-month mortality of patients with no-ACS ASHF according to etiology.  PATIENTS AND METHODS    The data from 112 patients with ASHF that was not associated with ACS were analyzed: 61 with ischemic (IASHF) and 51 with non-ischemic (NIASHF) etiology...
April 18, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28419579/erdj3-has-an-essential-role-for-z-variant-alpha-1-antitrypsin-degradation
#14
Nazli Khodayari, George Marek, Yuanqing Lu, Karina Krotova, Rejean Liqun Wang, Mark Brantly
Alpha-1-antitrypsin deficiency (AATD) is an inherited disease characterized by emphysema and liver disease. AATD is most often caused by a single amino acid substitution at amino acid 342 in the mature protein, resulting in the Z mutation of the alpha-1-antitrypsin gene (ZAAT). This substitution is associated with misfolding and accumulation of ZAAT in the endoplasmic reticulum (ER) of hepatocytes and monocytes, causing a toxic gain of function. Retained ZAAT is eliminated by ER-associated degradation and autophagy...
April 17, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28416773/changes-in-t-cell-subpopulations-and-cytokine-network-during-early-period-of-ibrutinib-therapy-in-chronic-lymphocytic-leukemia-patients-the-significant-decrease-in-t-regulatory-cells-number
#15
Monika Podhorecka, Aneta Goracy, Agnieszka Szymczyk, Malgorzata Kowal, Blanca Ibanez, Olga Jankowska-Lecka, Arkadiusz Macheta, Aleksandra Nowaczynska, Elzbieta Drab-Urbanek, Sylwia Chocholska, Dariusz Jawniak, Marek Hus
B cell receptor (BCR) stimulation signal plays an important role in the pathogenesis of chronic lymphocytic leukemia (CLL), and kinase inhibitors directed toward the BCR pathway are now the promising anti-leukemic drugs. Ibrutinib, a Bruton tyrosine kinase inhibitor, demonstrates promising clinical activity in CLL. It is reported that ibrutinib, additionally to directly targeting leukemic cells, also inhibits the interactions of these cells with T cells, macrophages and accessory cells. Assessment of these mechanisms is important because of their non -direct anti-leukemic effects and to identify possible side effects connected with long-term drug administration...
March 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28416270/plasma-levels-and-leucocyte-rna-expression-of-adipokines-in-young-patients-with-coronary-artery-disease-in-metabolic-syndrome-and-healthy-controls
#16
Aleš Smékal, Jan Václavík, David Stejskal, Klára Benešová, Jiří Jarkovský, Gabriela Svobodová, Radmila Richterová, Marek Švesták, Miloš Táborský
OBJECTIVES: Little is known about the role of adipokines in the pathogenesis of coronary artery disease in young patients. The aims of this study were to compare serum levels of adipokines and expression of adipokines in peripheral blood leukocytes in patients with premature coronary artery disease (CAD), metabolic syndrome and healthy individuals. DESIGN AND METHODS: Sixty-five patients with premature CAD (men 18-45years old and women 18-55years old) formed the study group...
April 14, 2017: Cytokine
https://www.readbyqxmd.com/read/28414469/correlations-between-structure-and-near-infrared-spectra-of-saturated-and-unsaturated-carboxylic-acids-an-insight-from-anharmonic-dft-calculations
#17
Justyna Grabska, Mika Ishigaki, Krzysztof Bernard Beć, Marek Janusz Wojcik, Yukihiro Ozaki
By near-infrared (NIR) spectroscopy and anharmonic DFT calculations we investigate five kinds of saturated and unsaturated carboxylic acids belonging to the group of short-chain fatty acids; propionic acid, butyric acid, acrylic acid, crotonic acid and vinylacetic acid. The experimental NIR spectra of these five kinds of carboxylic acids are reproduced by quantum chemical calculations in a broad spectral region of 7500-4000 cm(-1) and for a wide range of concentrations. By employing anharmonic GVPT2 calculations on DFT level, a detailed interpretation of experimental spectra is achieved, elucidating structure-spectra correlations of these molecules in the NIR region...
April 17, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28414364/experimental-analysis-of-stress-fields-of-rotating-structural-elements-by-means-of-reflection-photoelasticity
#18
Peter Frankovský, Oskar Ostertag, Eva Ostertagová, František Trebuňa, Ján Kostka, Marek Výrostek
The subject of this paper is an experimental stress analysis of a rotor with a symmetrical arm end and a rotor with an asymmetrical arm end. The main aim of this paper is to test the application of the Harmonic Star Method software developed by the authors. This software analyzes stress states in rotating structural elements. The stress state of the analyzed rotors is caused by centrifugal forces. The experiment was carried out by means of reflection photoelasticity, and the experimental solution was focused on periodical dynamic effects, which required the use of stroboscopic white light...
April 10, 2017: Applied Optics
https://www.readbyqxmd.com/read/28414218/exploiting-the-anti-aggregation-of-gold-nanostars-for-rapid-detection-of-hand-foot-and-mouth-disease-causing-enterovirus-71-using-surface-enhanced-raman-spectroscopy
#19
Miguel Reyes, Marek Piotrowski, Swee Kim Ang, Jingqi Chan, Shuai He, Justin Jang Hann Chu, James Chen Yong Kah
Enterovirus 71 (EV71) is a major public health threat that requires rapid point-of-care detection. Here, we developed a surface-enhanced Raman spectroscopy (SERS)-based scheme that utilized protein-induced aggregation of colloidal gold nanostars (AuNS) to rapidly detect EV71 without the need for fabricating a solid substrate, Raman labels or complicated sample handling. We used AuNS (hydrodynamic diameter, DH of 105.12 ± 1.13 nm) conjugated to recombinant scavenger receptor class B, member 2 (SCARB2) protein with known affinity to EV71...
April 17, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28413124/videolaryngoscopy-for-trauma-patient-intubation
#20
Marek Dabrowski, Agata Dabrowska, Maciej Sip
No abstract text is available yet for this article.
March 18, 2017: American Journal of Emergency Medicine
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