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https://www.readbyqxmd.com/read/28914934/extended-yeh-s-method-for-optically-active-anisotropic-layered-media
#1
Razvigor Ossikovski, Oriol Arteaga
We extend the original method of Yeh [J. Opt. Soc. Am.69, 742 (1979)JOSAAH0030-394110.1364/JOSA.69.000742] for calculating the reflection and transmission from anisotropic layered structures to media exhibiting not only dielectric, but also magnetic anisotropy, as well as optical activity. We likewise establish the relationship between the optical activity and gyration tensors from the two most used constitutive relations for optically active media and illustrate the extended Yeh's method on a practically important example...
September 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28902147/chlordetect-commercial-calcium-aluminate-based-conductimetric-sensor-for-chloride-presence-detection
#2
Magda Torres-Luque, Johann F Osma, Mauricio Sánchez-Silva, Emilio Bastidas-Arteaga, Franck Schoefs
Chloride presence affects different environments (soil, water, concrete) decreasing their qualities. In order to assess chloride concentration this paper proposes a novel sensor for detecting and measuring it. This sensor is based on electric changes of commercial monocalcium aluminate (CA) when it interacts with chloride aqueous solutions. CA is used as a dielectric material between two coplanar capacitors. The geometry proposed for this sensor allows to assess the chloride content profile, or to make four times the same measurement...
September 13, 2017: Sensors
https://www.readbyqxmd.com/read/28900426/interleukin-il-18-binding-protein-deficiency-disrupts-natural-killer-cell-maturation-and-diminishes-circulating-il-18
#3
Robert Z Harms, Austin J Creer, Kristina M Lorenzo-Arteaga, Katie R Ostlund, Nora E Sarvetnick
The cytokine interleukin (IL)-18 is a crucial amplifier of natural killer (NK) cell function. IL-18 signaling is regulated by the inhibitory effects of IL-18 binding protein (IL-18BP). Using mice deficient in IL-18BP (IL-18BPKO), we investigated the impact of mismanaged IL-18 signaling on NK cells. We found an overall reduced abundance of splenic NK cells in the absence of IL-18BP. Closer examination of NK cell subsets in spleen and bone marrow using CD27 and CD11b expression revealed that immature NK cells were increased in abundance, while the mature population of NK cells was reduced...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28887172/synthesis-and-in-vitro-anticancer-activity-of-23-23-e-benzylidenespirostanols-derived-from-steroid-sapogenins
#4
Manuel A Ramos-Enríquez, Katherine Vargas-Romero, Lucie Rárová, Miroslav Strnad, Martín A Iglesias-Arteaga
Benzylidenespirostanols were prepared by two-step synthesis including BF3·Et2O-catalyzed aldol condensation of several acetylated steroid sapogenins with benzaldehyde followed by saponification. The obtained compounds showed moderate cytotoxicity against three cancer cell lines (T-lymphoblastic leukemia cell line CEM, breast carcinoma cell line MCF7 and cervical carcinoma cell line HeLa) and normal human fibroblasts (BJ). The most active of the five tested substances was 3c (lowest IC50 for MCF7 cells 19.9±0...
September 5, 2017: Steroids
https://www.readbyqxmd.com/read/28867553/cepstral-analysis-of-normal-and-pathological-voice-in-spanish-adults-smoothed-cepstral-peak-prominence-in-sustained-vowels-versus-connected-speech
#5
Jonathan Delgado-Hernández, Nieves M León-Gómez, Laura M Izquierdo-Arteaga, Yanira Llanos-Fumero
INTRODUCTION AND OBJECTIVES: In recent years, the use of cepstral measures for acoustic evaluation of voice has increased. One of the most investigated parameters is smoothed cepstral peak prominence (CPPs). The objectives of this paper are to establish the usefulness of this acoustic measure in the objective evaluation of alterations of the voice in Spanish and to determine what type of voice sample (sustained vowels or connected speech) is the most sensitive in evaluating the severity of dysphonia...
August 31, 2017: Acta Otorrinolaringológica Española
https://www.readbyqxmd.com/read/28864636/people
#6
(no author information available yet)
Carlos Arteaga, MD; Steven D. Leach, MD; and Paul M. Harari, MD, are highlighted.
September 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28835144/external-iliac-artery-doppler-assessment-in-the-prediction-of-adverse-pregnancy-outcomes
#7
Catalina De Paco-Matallana, Walter Ventura, Mª Teresa Prieto-Sánchez, Miriam Pertegal, Maria Isabel Macizo, Carolina Peñalver, Alicia Arteaga, Isabel Hernández
PURPOSE: To investigate the potential role of the mean external iliac artery pulsatility index (EIA-PI) as a predictor of adverse obstetric outcomes such as preeclampsia, gestational hypertension and small for gestational age (SGA). METHODS: In women attending for first trimester screening at 11 + 0-13 + 6 weeks of gestation, we recorded maternal characteristics and measured EIA mean PI and uterine artery mean PI. We compared EIA mean PI in those that developed preeclampsia (n = 84), gestational hypertension (n = 50) or small for gestational age (n = 444) with those unaffected (n = 3736)...
August 24, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28827046/%C3%AE-estradiol-3-benzoate-confers-neuroprotection-in-parkinson-mpp-rat-model-through-inhibition-of-lipid-peroxidation
#8
Yoshajandith Aguirre-Vidal, Antonio Monroy-Noyola, Laura Anaya-Ramos, Marcela Arteaga-Silva, Marisela Mendez-Armenta, Pedro Ostoa-Saloma, Mariana Díaz-Zaragoza, Jorge Morales-Montor, Camilo Ríos, Sergio Montes
Estradiol (E2), in addition to its known hormone function, is a neuroactive steroid that has shown neuroprotective profile in several models of neurological diseases. The present study explores the antioxidant effect of β-estradiol-3-benzoate (EB) on the neurotoxicity elicited by MPP(+) in rat striatum. Male Wistar rats, that were gonadectomized 30days prior to EB, were given 100µgEB per rat every 48h for 11days and animals were infused with MPP(+) via intrastriatal at day six after beginning EB treatment...
October 2017: Steroids
https://www.readbyqxmd.com/read/28820867/cyberbullying-in-peruvian-schoolchildren-and-associated-factors-analysis-of-a-national-survey
#9
Juan C Ruiz-Maza, Jazmin M Sanchez-Salvatierra, Carlos M Moreno-Arteaga
No abstract text is available yet for this article.
August 7, 2017: Medwave
https://www.readbyqxmd.com/read/28794284/genomic-profiling-of-er-breast-cancers-after-short-term-estrogen-suppression-reveals-alterations-associated-with-endocrine-resistance
#10
Jennifer M Giltnane, Katherine E Hutchinson, Thomas P Stricker, Luigi Formisano, Christian D Young, Monica V Estrada, Mellissa J Nixon, Liping Du, Violeta Sanchez, Paula Gonzalez Ericsson, Maria G Kuba, Melinda E Sanders, Xinmeng J Mu, Eliezer M Van Allen, Nikhil Wagle, Ingrid A Mayer, Vandana Abramson, Henry Gόmez, Monica Rizzo, Weiyi Toy, Sarat Chandarlapaty, Erica L Mayer, Jason Christiansen, Danielle Murphy, Kerry Fitzgerald, Kai Wang, Jeffrey S Ross, Vincent A Miller, Phillip J Stephens, Roman Yelensky, Levi Garraway, Yu Shyr, Ingrid Meszoely, Justin M Balko, Carlos L Arteaga
Inhibition of proliferation in estrogen receptor-positive (ER(+)) breast cancers after short-term antiestrogen therapy correlates with long-term patient outcome. We profiled 155 ER(+)/human epidermal growth factor receptor 2-negative (HER2(-)) early breast cancers from 143 patients treated with the aromatase inhibitor letrozole for 10 to 21 days before surgery. Twenty-one percent of tumors remained highly proliferative, suggesting that these tumors harbor alterations associated with intrinsic endocrine therapy resistance...
August 9, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28790806/perceptions-of-patients-with-rheumatic-diseases-on-the-impact-on-daily-life-and-satisfaction-with-their-medications-rheu-life-a-survey-to-patients-treated-with-subcutaneous-biological-products
#11
Carlos M González, Loreto Carmona, Javier de Toro, Enrique Batlle-Gualda, Antonio I Torralba, María J Arteaga, Luis Cea-Calvo
OBJECTIVE: The aim of this study was to explore perceptions of patients with rheumatic diseases treated with subcutaneous (SC) biological drugs on the impact on daily life and satisfaction with current therapy, including preferred attributes. METHODS: A survey was developed ad hoc by four rheumatologists and three patients, including Likert questions on the impact of disease and treatment on daily life and preferred attributes of treatment. Rheumatologists from 50 participating centers were instructed to handout the survey to 20 consecutive patients with rheumatoid arthritis (RA), axial spondyloarthritis (ax-SpA), or psoriatic arthritis (PsA) receiving SC biological drugs...
2017: Patient Preference and Adherence
https://www.readbyqxmd.com/read/28781122/dosimetry-of-99m-tc-dtpa-dmsa-and-mag3-used-in-renal-function-studies-of-newborns-and-children
#12
Marcial Vásquez Arteaga, Víctor Murillo Caballero, Kelman Marín Rengifo
The dose to kidneys of newborns and 1-year old children was calculated using the MIRD methodology. In order to perform renal studies radiopharmaceutical like (99m)Tc-DTPA, (99m) Tc-MAG3 and (99m)Tc-DMSA are used. Here, besides the anatomic and structure information of kidneys another data are provided in benefit of patient, however during the radioisotope decay emitted radiations delivers, totally or partially, their energy. Therefore is important to estimate the internal radiation dose of the organs. The largest dose to kidneys comes from the self-dose and it is due to the charged particles emitted during (99m)Tc decay...
July 28, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28780962/applicability-of-the-gibbs-adsorption-isotherm-to-the-analysis-of-experimental-surface-tension-data-for-ionic-and-nonionic-surfactants
#13
REVIEW
L Martínez-Balbuena, Araceli Arteaga-Jiménez, Ernesto Hernández-Zapata, César Márquez-Beltrán
The Gibbs Adsorption Isotherm equation is a two-dimensional analogous of the Gibbs-Duhem equation, and it is one of the cornerstones of interface science. It is also widely used to estimate the surface excess concentration (SEC) for surfactants and other compounds in aqueous solution, from surface tension measurements. However, in recent publications some authors have cast doubt on this method. In the present work, we review some of the best available surface tension experimental data, and compare estimations of the SEC, using the Gibbs isotherm method (GIM), to direct measurements reported in the literature...
July 21, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28772559/hrtem-microstructural-characterization-of-%C3%AE-wo3-thin-films-deposited-by-reactive-rf-magnetron-sputtering
#14
A Faudoa-Arzate, A Arteaga-Durán, R J Saenz-Hernández, M E Botello-Zubiate, P R Realyvazquez-Guevara, J A Matutes-Aquino
Though tungsten trioxide (WO3) in bulk, nanosphere, and thin film samples has been extensively studied, few studies have been dedicated to the crystallographic structure of WO3 thin films. In this work, the evolution from amorphous WO3 thin films to crystalline WO3 thin films is discussed. WO3 thin films were fabricated on silicon substrates (Si/SiO2) by RF reactive magnetron sputtering. Once a thin film was deposited, two successive annealing treatments were made: an initial annealing at 400 °C for 6 h was followed by a second annealing at 350 °C for 1 h...
February 17, 2017: Materials
https://www.readbyqxmd.com/read/28769604/molecular-phylogeny-of-atractus-serpentes-dipsadidae-with-emphasis-on-ecuadorian-species-and-the-description-of-three-new-taxa
#15
Alejandro Arteaga, Konrad Mebert, Jorge H Valencia, Diego F Cisneros-Heredia, Nicolás Peñafiel, Carolina Reyes-Puig, José L Vieira-Fernandes, Juan M Guayasamin
We present a molecular phylogeny of snake genus Atractus, with an improved taxon sampling that includes 30 of the 140 species currently recognized. The phylogenetic tree supports the existence of at least three new species in the Pacific lowlands and adjacent Andean slopes of the Ecuadorian Andes, which we describe here. A unique combination of molecular, meristic and color pattern characters support the validity of the new species. With the newly acquired data, we propose and define the Atractus iridescens species group, as well as redefine the Atractus roulei species group...
2017: ZooKeys
https://www.readbyqxmd.com/read/28751448/association-of-fgfr1-with-er%C3%AE-maintains-ligand-independent-er-transcription-and-mediates-resistance-to-estrogen-deprivation-in-er-breast-cancer
#16
Luigi Formisano, Kimberly Mae Stauffer, Christian D Young, Neil E Bhola, Angel L Guerrero-Zotano, Valerie M Jansen, Monica M Estrada, Katherine E Hutchinson, Jennifer M Giltnane, Luis J Schwarz, Yao Lu, Justin M Balko, Olivier Deas, Stefano Cairo, Jean-Gabriel Judde, Ingrid A Mayer, Melinda Sanders, Teresa C Dugger, Roberto Bianco, Thomas Stricker, Carlos L Arteaga
FGFR1 amplification occurs in ~15% of ER+ human breast cancers. We investigated mechanisms by which FGFR1 amplification confers antiestrogen resistance to ER+ breast cancer.<br /><br />Experimental Design: ER+ tumors from patients treated with letrozole before surgery were subjected to Ki67 immunohistochemistry, FGFR1 FISH, and RNA-sequencing. ER+/FGFR1 amplified breast cancer cells and patient-derived xenografts (PDXs) were treated with FGFR1 siRNA or the FGFR tyrosine kinase inhibitor lucitanib...
July 27, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28750787/high-dose-filgrastim-treatment-of-nonregenerative-pancytopenia-associated-with-chronic-canine-ehrlichiosis
#17
Mauricio Palacios, Rafael Arteaga, Gustavo Calvo
OBJECTIVE: To report the management and outcome of a dog with canine monocytic ehrlichiosis and nonregenerative pancytopenia, with high doses of filgrastim. CASE DESCRIPTION: An 8-year-old male, mixed-breed dog, weighing 5.6kg, presented with a 1-month history of hyporexia, adynamia, and a weight loss of approximately 1kg. The general condition of the dog was observed to be poor as follows: lethargy, tachycardia, marked pallor of the mucous membranes, petechiae on the abdomen, hepatosplenomegaly, and cervical lymphadenopathy...
March 2017: Topics in Companion Animal Medicine
https://www.readbyqxmd.com/read/28720316/pigeons-and-their-droppings-as-reservoirs-of-candida-and-other-zoonotic-yeasts
#18
Inmaculada Rosario Medina, Lorena Román Fuentes, Miguel Batista Arteaga, Fernando Real Valcárcel, Félix Acosta Arbelo, Daniel Padilla Del Castillo, Soraya Déniz Suárez, Otilia Ferrer Quintana, Belinda Vega Gutiérrez, Freddy Silva Sergent, Begoña Acosta-Hernández
BACKGROUND: The importance of pigeons as reservoirs and carriers of Cryptococcus neoformans and other species of this genus is well-known; however, less is known about their role as reservoirs and carriers of other yeasts that impact public health. AIMS: The present study was performed on Gran Canaria Island to define yeasts other than Cryptococcus spp. that have been reported to impact public health and which could be carried by pigeons. METHODS: Samples were obtained from 83 pigeon lofts (Columba livia); moreover, 331 crop samples, 331 cloacal samples and 174 dropping samples were collected...
July 15, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28706147/tumor-p38mapk-signaling-enhances-breast-carcinoma-vascularization-and-growth-by-promoting-expression-and-deposition-of-pro-tumorigenic-factors
#19
Michelle Limoge, Alfiya Safina, Alexander M Truskinovsky, Ieman Aljahdali, Justin Zonneville, Aleksandar Gruevski, Carlos L Arteaga, Andrei V Bakin
The breast carcinoma microenvironment strikingly influences cancer progression and response to therapy. Various cell types in the carcinoma microenvironment show significant activity of p38 mitogen-activated protein kinase (MAPK), although the role of p38MAPK in breast cancer progression is still poorly understood. The present study examined the contribution of tumor p38MAPK to breast carcinoma microenvironment and metastatic capacity. Inactivation of p38MAPK signaling in metastatic breast carcinoma cells was achieved by forced expression of the kinase-inactive mutant of p38/MAPK14 (a dominant-negative p38, dn-p38)...
June 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28696691/electronic-and-functional-scope-of-boronic-acid-derived-salicylidenehydrazone-bashy-complexes-as-fluorescent-dyes
#20
María M Alcaide, Fabio M F Santos, Vânia F Pais, Joana Inês Carvalho, Daniel Collado, Ezequiel Pérez-Inestrosa, Jesús F Arteaga, Francisco Boscá, Pedro M P Gois, Uwe Pischel
A series of boronic acid derived salicylidenehydrazone (BASHY) complexes was prepared and photophysically characterized. The dye platform can be modified by (a) electronic tuning along the cyanine-type axis via modification of the donor-acceptor pair and (b) functional tuning via the boronic acid residue. On the one hand, approach (a) allows the control of photophysical parameters such as Stokes shift, emission color, and two-photon-absorption (2PA) cross section. The resulting dyes show emission light-up behavior in nonpolar media and are characterized by high fluorescence quantum yields (ca...
July 11, 2017: Journal of Organic Chemistry
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