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https://www.readbyqxmd.com/read/28319398/criegee-chemistry-on-aqueous-organic-surfaces
#1
Shinichi Enami, Agustin J Colussi
In the troposphere, the fate of gas-phase Criegee intermediates (CIs) is deemed to be determined by their reactions with water molecules. Here it is shown that CIs produced in situ on the surface of water/acetonitrile (W/AN) solutions react competitively with millimolar carboxylic acids. Present experiments probe, via online electrospray mass spectrometry, CIs chemistry on the surface of alpha-humulene and beta-caryophyllene in W/AN microjets exposed to O3(g) for < 10 micro sec. Mass-specific identification lets us establish the progeny of products and intermediates generated in the early stages of CIs reactions with H2O, D2O, H2O(18), and n-alkyl-COOH (n = 1-7)...
March 20, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28319269/withdrawn-trimetazidine-for-stable-angina
#2
REVIEW
Agustín Ciapponi, Rudolf Pizarro, Jeff Harrison
BACKGROUND: Patients with stable angina not controlled by monotherapy with nitrates, beta blockers, or calcium channel blockers are often treated with combinations of these drugs. There may be adverse effects from, or contraindications to, the use of combinations. In low risk groups, medical treatment appears to be as good an option as percutaneous transluminal coronary angioplasty in terms of averting myocardial infarction, death, or subsequent revascularization. Revascularization procedures are too costly or inaccessible for many patients in developing countries therefore effective and safe medical treatment is needed...
March 20, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28318176/fluid-overload-and-kidney-failure-in-children-with-severe-sepsis-and-septic-shock-a-cohort-study
#3
Omar E Naveda Romero, Andrea F Naveda Meléndez
INTRODUCTION: In children with sepsis, fluid overload as a result of an aggressive fluid replacement or excessive fluid administration may result in kidney impairment and increased mortality. Objective. To determine the association between fluid overload and the rate of kidney failure in a group of children with severe sepsis and septic shock. POPULATION AND METHODS: This was a prospective cohort study conducted in the intensive care unit of Hospital Universitario de Pediatría “Dr...
April 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28298996/in-vivo-evaluation-of-three-dimensional-of-volumetric-changes-using-a-cad-cam-chair-side-system-technical-procedure
#4
Rubén Agustín-Panadero, Alberto Ferreiroa, Agustín Pascual-Moscardó, Antonio Fons-Font, María-Fernanda Solá-Ruíz
An intraoral digital scanner in combination with specialized three-dimensional surface analysis software monitors volumetric changes to soft tissues or dental restorations. This technology can evaluate the success of a specific technique or medium- or long-term clinical outcomes in both clinical and research situations. This article describes how this technology was used to provide immediate chair-side data analysis without the help of specialized laboratory support. Key words:Intraoral scanner, CAD-CAM, best fit-method, surface tessellation language...
March 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28296367/-burden-of-hospitalization-for-pneumonia-in-a-spanish-tertiary-hospital-period-2009-2014
#5
Miguel López-Gobernado, Alberto Pérez-Rubio, Eva López-García, Agustín Mayo-Iscar, José María Eiros
BACKGROUND: The aim of this paper is to estimate the burden of hospitalization for community-acquired pneumonia and pneumococcal pneumonia at a tertiary level hospital in the Spanish National Health System. METHODS: A retrospective study which compiles data from the Minimum Data Set using clinical codes of the International Code of Diseases, as well as the hospitalization rate index per thousand inhabitants, the hospitalization rate per thousand population, mortality and fatality rate, using as denominator the demographic data of the population of the Health Area...
March 2017: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/28296213/action-semantic-and-syntactic-deficits-in-subjects-at-risk-for-huntington-s-disease
#6
Adolfo M García, Yamile Bocanegra, Eduar Herrera, Mariana Pino, Edinson Muñoz, Lucas Sedeño, Agustín Ibáñez
Frontostriatal networks play critical roles in grounding action semantics and syntactic skills. Indeed, their atrophy distinctively disrupts both domains, as observed in patients with Huntington's disease (HD) and Parkinson's disease, even during early disease stages. However, frontostriatal degeneration in these conditions may begin up to 15 years before the onset of clinical symptoms, opening avenues for pre-clinical detection via sensitive tasks. Such a mission is particularly critical in HD, given that patients' children have 50% chances of inheriting the disease...
March 11, 2017: Journal of Neuropsychology
https://www.readbyqxmd.com/read/28295144/androgen-receptor-polyglutamine-repeat-length-ar-cagn-modulates-the-effect-of-testosterone-on-androgen-associated-somatic-traits-in-filipino-young-adult-men
#7
Calen P Ryan, Alexander V Georgiev, Thomas W McDade, Lee T Gettler, Dan T A Eisenberg, Margarita Rzhetskaya, Sonny S Agustin, M Geoffrey Hayes, Christopher W Kuzawa
OBJECTIVES: The androgen receptor (AR) mediates expression of androgen-associated somatic traits such as muscle mass and strength. Within the human AR is a highly variable glutamine short-tandem repeat (AR-CAGn), and CAG repeat number has been inversely correlated to AR transcriptional activity in vitro. However, evidence for an attenuating effect of long AR-CAGn on androgen-associated somatic traits has been inconsistent in human populations. One possible explanation for this lack of consistency is that the effect of AR-CAGn on AR bioactivity in target tissues likely varies in relation to circulating androgen levels...
March 14, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28291670/molecular-ticks-and-serological-humans-study-of-crimean-congo-hemorrhagic-fever-virus-in-the-iberian-peninsula-2013-2015
#8
Ana M Palomar, Aránzazu Portillo, Sonia Santibáñez, Lara García-Álvarez, Agustín Muñoz-Sanz, Francisco J Márquez, Lourdes Romero, José M Eiros, José A Oteo
INTRODUCTION: Crimean-Congo hemorrhagic fever (CCHF) is a viral disease, mainly transmitted through tick bite, of great importance in Public Health. In Spain, Crimean-Congo hemorrhagic fever virus (CCHFV) was detected for the first time in 2010 in Hyalomma lusitanicum ticks collected from deer in Cáceres. The aim of this study was to investigate the presence of CCHFV in ticks from Cáceres, and from other Spanish areas, and to evaluate the presence of antibodies against the virus in individuals exposed to tick bites...
March 10, 2017: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/28287736/inductive-loop-in-the-impedance-response-of-perovskite-solar-cells-explained-by-surface-polarization-model
#9
Elnaz Ghahremanirad, Agustín Bou, Saeed Olyaee, Juan Bisquert
The analysis of perovskite solar cells by impedance spectroscopy has provided a rich variety of behaviors that demand adequate interpretation. Two main features have been reported: First, different impedance spectral arcs vary in combination; second, inductive loops and negative capacitance characteristics appear as an intrinsic property of the current configuration of perovskite solar cells. Here we adopt a previously developed surface polarization model based on the assumption of large electric and ionic charge accumulation at the external contact interface...
March 15, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28286142/ixodoidea-of-the-western-palaearctic-a-review-of-available-literature-for-identification-of-species
#10
REVIEW
Agustín Estrada-Peña, Miriam Pfäffle, Gad Baneth, Gabriela Kleinerman, Trevor N Petney
We aim to produce a review of the most important literature references necessary for the identification of ticks of the families Ixodidae and Argasidae in Europe and northern Africa (i.e. the Western Palaearctic region). The purpose of this paper is to pinpoint a set of critically selected papers that contain reliable information on morphology, taxonomic keys, and comparative discussions which are critical for the identification of the ticks reported in the target region. When necessary, comments are provided on the systematic position of a species, or on suitable papers already addressing the issue...
March 6, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28284745/prolonged-use-of-zoledronic-acid-4-years-did-not-improve-outcome-in-multiple-myeloma-patients
#11
Agustin Avilès, Maria-Jesùs Nambo, Judith Huerta-Guzmàn, Sergio Cleto, Natividad Neri
BACKGROUND: Bisphosphonates, especially zoledronic acid (ZA), show antitumor effects in multiple myeloma (MM) and other neoplasms. The standard time for ZA administration has been 2 years. However, with improvement in overall survival (OS) in MM with new agents, it unclear whether ZA could be administered for a prolonged time to improve OS. PATIENTS AND METHODS: A total of 170 patients with untreated, symptomatic MM were randomly divided into a group to receive ZA for 4 years, with a control group to receive ZA for 2 years...
February 16, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28282906/gsk3%C3%AE-and-vdac-involvement-in-er-stress-and-apoptosis-modulation-during-orthotopic-liver-transplantation
#12
Mohamed Amine Zaouali, Arnau Panisello, Alexandre Lopez, Carlos Castro, Emma Folch, Teresa Carbonell, Anabela Rolo, Carlos Marques Palmeira, Agustin Garcia-Gil, René Adam, Joan Roselló-Catafau
We investigated the involvement of glycogen synthase kinase-3β (GSK3β) and the voltage-dependent anion channel (VDAC) in livers subjected to cold ischemia-reperfusion injury (I/R) associated with orthotopic liver transplantation (OLT). Rat livers were preserved in University of Wisconsin (UW) and Institute Georges Lopez (IGL-1) solution, the latter enriched or not with trimetazidine, and then subjected to OLT. Transaminase (ALT) and HMGB1 protein levels, glutamate dehydrogenase (GLDH), and oxidative stress (MDA) were measured...
March 8, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28281305/evolutionary-changes-in-symbiont-community-structure-in-ticks
#13
Olivier Duron, Florian Binetruy, Valérie Noël, Julie Cremaschi, Karen D McCoy, Céline Arnathau, Olivier Plantard, John Goolsby, Adalberto A Pérez de León, Dieter J A Heylen, A Raoul Van Oosten, Yuval Gottlieb, Gad Baneth, Alberto A Guglielmone, Agustin Estrada-Peña, Maxwell N Opara, Lionel Zenner, Fabrice Vavre, Christine Chevillon
Ecological specialization to restricted diet-niches is driven by obligate, and often maternally inherited, symbionts in many arthropod lineages. These heritable symbionts typically form evolutionarily stable associations with arthropods that can last for millions of years. Ticks were recently found to harbor such an obligate symbiont, Coxiella-LE, that synthesizes B vitamins and cofactors not obtained in sufficient quantities from blood diet. In this study, the examination of 81 tick species show that some Coxiella-LE symbioses are evolutionarily stable with an ancient acquisition followed by co-diversification as observed in ticks belonging to the Rhipicephalus genus...
March 9, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28280461/glutamate-and-opioid-antagonists-modulate-dopamine-levels-evoked-by-innately-attractive-male-chemosignals-in-the-nucleus-accumbens-of-female-rats
#14
María-José Sánchez-Catalán, Alejandro Orrico, Lucía Hipólito, Teodoro Zornoza, Ana Polache, Enrique Lanuza, Fernando Martínez-García, Luis Granero, Carmen Agustín-Pavón
Sexual chemosignals detected by vomeronasal and olfactory systems mediate intersexual attraction in rodents, and act as a natural reinforcer to them. The mesolimbic pathway processes natural rewards, and the nucleus accumbens receives olfactory information via glutamatergic projections from the amygdala. Thus, the aim of this study was to investigate the involvement of the mesolimbic pathway in the attraction toward sexual chemosignals. Our data show that female rats with no previous experience with males or their chemosignals display an innate preference for male-soiled bedding...
2017: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/28279829/tissue-tropism-of-saint-louis-encephalitis-virus-histopathology-triggered-by-epidemic-and-non-epidemic-strains-isolated-in-argentina
#15
María Elisa Rivarola, Guillermo Albrieu-Llinás, María Belén Pisano, Laura Beatriz Tauro, Melisa Gorosito-Serrán, Cristian Gabriel Beccaria, Luis Adrián Díaz, Ana Vázquez, Agustín Quaglia, Cristina López, Lorena Spinsanti, Adriana Gruppi, Marta Silvia Contigiani
Saint Louis encephalitis virus (SLEV) reemerged in South America, and caused encephalitis outbreaks at the beginning of the 21st century. To enhance our knowledge about SLEV virulence, we performed comparative pathogenesis studies in Swiss albino mice inoculated with two different variants, the epidemic strain CbaAr-4005 and the non-epidemic strain CorAn-9275. Only the infection of mice with SLEV strain CbaAr-4005 resulted in high viremia, invasion of peripheral tissues including the lungs, kidney, and spleen, and viral neuroinvasion...
March 6, 2017: Virology
https://www.readbyqxmd.com/read/28277344/use-of-hydroxychloroquine-is-associated-with-improved-lipid-profile-in-rheumatoid-arthritis-patients
#16
Jose Felix Restrepo, Inmaculada Del Rincon, Emily Molina, Daniel F Battafarano, Agustin Escalante
BACKGROUND/PURPOSE: We examined the association between hydroxychloroquine (HCQ) and plasma lipid and glucose levels in rheumatoid arthritis (RA) cohort. METHODS: We compared fasting lipid profiles and plasma glucose between patients who were and were not taking HCQ. We divided patients into 3 groups based on HCQ exposure during follow-up: those who had never taken HCQ, those who took it intermittently, and those who took it continuously. We used multivariable models and propensity scoring to compensate for the effect of nonrandom treatment assignment...
March 9, 2017: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/28277229/intraventricular-air-embolism-complicating-computed-tomography-guided-pulmonary-aspiration-biopsy
#17
Agustin Dietrich, Analía Vargas, David E Smith, Alberto Domenech
No abstract text is available yet for this article.
October 27, 2016: Archivos de Bronconeumología
https://www.readbyqxmd.com/read/28274423/a-novel-two-step-enzymatic-synthesis-of-blastose-a-%C3%AE-d-fructofuranosyl-2%C3%A2-6-d-glucopyranose-sucrose-analogue
#18
Alfonso Miranda-Molina, Edmundo Castillo, Agustin Lopez Munguia
Blastose, a natural disaccharide found in honey, is usually found as a byproduct of fructo-oligosaccharide synthesis from sucrose with fructosyltransferases. In this study, we describe a novel two-step biosynthetic route to obtain blastose, designed from a detailed observation of B. subtilis levansucrase (SacB) acceptor structural requirements for fructosylation. The strategy consisted first in the synthesis of the trisaccharide O-β-d-Fruf-(2↔6)-O-α-d-Glcp-(1↔1)-α-d-Glcp, through a regioselective β-d-transfructosylation of trehalose (Tre) which acts as acceptor in a reaction catalyzed by SacB using sucrose or levan as fructosyl donor...
July 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28272877/enantioselective-ring-opening-polymerization-of-rac-lactide-dictated-by-densely-substituted-aminoacids
#19
Ana Sanchez-Sanchez, Iván Rivilla, Maddalen Agirre, Andere Basterretxea, Agustin Etxeberria, Antonio Veloso, Haritz Sardón, David Mecerreyes, Fernando P Cossio
Although organometallic catalysts have shown great ability to promote stereocontrolled polymerization reactions, their substantial toxicity and other drawbacks are accelerating the development of organic catalysts. To date, organic catalysts have demonstrated some ability to promote stereocontrolled polymerizations. However, none of them has been able to promote different stereochemical outcomes depending on the chirality of the organic catalyst. In this work we report for the first time the chirality transfer from catalyst to polymer in the ring-opening polymerization (ROP) of rac-lactide (rac-LA)...
March 8, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28272536/prediction-of-years-of-life-after-diagnosis-of-breast-cancer-using-omics-and-omic-by-treatment-interactions
#20
Agustín González-Reymúndez, Gustavo de Los Campos, Lucía Gutiérrez, Sophia Y Lunt, Ana I Vazquez
Breast cancer (BC) is the second most common type of cancer and a major cause of death for women. Commonly, BC patients are assigned to risk groups based on the combination of prognostic and prediction factors (eg, patient age, tumor size, tumor grade, hormone receptor status, etc). Although this approach is able to identify risk groups with different prognosis, patients are highly heterogeneous in their response to treatments. To improve the prediction of BC patients, we extended clinical models (including prognostic and prediction factors with whole-omic data) to integrate omics profiles for gene expression and copy number variants (CNVs)...
March 8, 2017: European Journal of Human Genetics: EJHG
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