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https://www.readbyqxmd.com/read/28317816/hemophagocytic-syndrome-secondary-to-tuberculosis-at-24-week-gestation
#1
Alexandra Arteaga Fernández, David Fernández de Velasco Pérez, M C Jiménez Fournier, J C Moreno Del Prado, B Paraíso Torras, M L Cañete Palomo
Hemophagocytic syndrome is a life-threatening disease characterized by the uncontrolled activation of macrophages, resulting in hemophagocytosis of blood cells in the bone marrow. A 20-year-old gravida at 23-week and 5-day gestation was admitted to hospital to evaluate fever up to 104°F of unknown origin, moderate cytopenia, and elevated levels of liver enzymes. Bone marrow biopsy confirmed hemophagocytic syndrome, and polymerase chain reaction came back positive for Mycobacterium tuberculosis. Supportive care and tuberculosis treatment resulted in clinical improvement...
January 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28289953/decomposing-the-household-food-insecurity-gap-for-children-of-u-s-born-and-foreign-born-hispanics-evidence-from-1998-to-2011
#2
Irma Arteaga, Stephanie Potochnick, Sarah Parsons
Using the Early Childhood Longitudinal Study-K, multivariate analysis, state fixed effects, and regression decomposition, we examine changes in food insecurity for Hispanic kindergarteners between 1998 and 2011, a time period of rapid immigration and political/socio-economic changes. During this time the household food insecurity gap between children of U.S.-born and foreign-born mothers increased by almost 7 percentage points. The factors-child, family, and state-that contributed to the nativity gap differed over time...
March 13, 2017: Journal of Immigrant and Minority Health
https://www.readbyqxmd.com/read/28281362/defining-leadership-competencies-for-pediatric-critical-care-fellows-results-of-a-national-needs-assessment
#3
Michael L Green, Margaret Winkler, Richard Mink, Melissa L Brannen, Meredith Bone, Tensing Maa, Grace M Arteaga, Megan E McCabe, Karen Marcdante, James Schneider, David A Turner
INTRODUCTION: Physicians in training, including those in Pediatric Critical Care Medicine, must develop clinical leadership skills in preparation to lead multidisciplinary teams during their careers. This study seeks to identify multidisciplinary perceptions of leadership skills important for Pediatric Critical Care Medicine fellows to attain prior to fellowship completion. METHODS: We performed a multi-institutional survey of Pediatric Critical Care Medicine attendings, fellows, and nurses...
March 10, 2017: Medical Teacher
https://www.readbyqxmd.com/read/28274957/an-acquired-her2-t798i-gatekeeper-mutation-induces-resistance-to-neratinib-in-a-patient-with-her2-mutant-driven-breast-cancer
#4
Ariella B Hanker, Monica Red Brewer, Jonathan H Sheehan, James P Koch, Gregory R Sliwoski, Rebecca Nagy, Richard Lanman, Michael F Berger, David M Hyman, David B Solit, Jie He, Vincent Miller, Richard E Cutler, Alshad S Lalani, Darren Cross, Christine M Lovly, Jens Meiler, Carlos L Arteaga
We report a HER2T798I gatekeeper mutation in a patient with HER2L869R-mutant breast cancer with acquired resistance to neratinib. Laboratory studies suggested that HER2L869R is a neratinib-sensitive, gain-of-function mutation that upon dimerization with mutant HER3E928G, also present in the breast cancer, amplifies HER2 signaling. The patient was treated with neratinib and exhibited a sustained partial response. Upon clinical progression, HER2T798I was detected in plasma tumor cell-free DNA. Structural modeling of this acquired mutation suggested that the increased bulk of isoleucine in HER2T798I reduces neratinib binding...
March 8, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28273355/evaluation-of-segmentation-methods-on-head-and-neck-ct-auto-segmentation-challenge-2015
#5
Patrik F Raudaschl, Paolo Zaffino, Gregory C Sharp, Maria Francesca Spadea, Antong Chen, Benoit M Dawant, Thomas Albrecht, Tobias Gass, Christoph Langguth, Marcel Lüthi, Florian Jung, Oliver Knapp, Stefan Wesarg, Richard Mannion-Haworth, Mike Bowes, Annaliese Ashman, Gwenael Guillard, Alan Brett, Graham Vincent, Mauricio Orbes-Arteaga, David Cárdenas-Peña, German Castellanos-Dominguez, Nava Aghdasi, Yangming Li, Angelique Berens, Kris Moe, Blake Hannaford, Rainer Schubert, Karl D Fritscher
PURPOSE: Automated delineation of structures and organs is a key step in medical imaging. However, due to the large number and diversity of structures and the large variety of segmentation algorithms a consensus is lacking as to which automated segmentation method works best for certain applications. Segmentation challenges are a good approach for unbiased evaluation and comparison of segmentation algorithms. METHODS: In this work we describe and present the results of the Head and Neck Auto-Segmentation Challenge 2015, a satellite event at the Medical Image Computing and Computer Assisted Interventions (MICCAI) 2015 conference...
March 8, 2017: Medical Physics
https://www.readbyqxmd.com/read/28270498/a-randomized-phase-ii-neoadjuvant-study-of-cisplatin-paclitaxel-with-or-without-everolimus-in-patients-with-stage-ii-iii-triple-negative-breast-cancer-tnbc
#6
Bojana Jovanovic, Ingrid A Mayer, Erica L Mayer, Vandana G Abramson, Aditya Bardia, Melinda Sanders, Maria G Kuba, Monica Valeria Estrada, J Scott Beeler, Timothy M Shaver, Kimberly N Johnson, Violeta Sanchez, Jennifer M Rosenbluth, Patrick M Dillon, Andres Forrero-Torres, Jenny C Chang, Ingrid Meszoely, Ana Grau, Brian D Lehmann, Yu Shyr, Quanhu Sheng, Sheau-Chiann Chen, Carlos L Arteaga, Jennifer A Pietenpol
PURPOSE: Due to inherent disease heterogeneity, targeted therapies have eluded TNBC, and biomarkers predictive of treatment response have not yet been identified. This study was designed to determine if the mTOR inhibitor everolimus with cisplatin and paclitaxel would provide synergistic anti-tumor effects in TNBC. EXPERIMENTAL DESIGN: Stage II/III patients with TNBC were enrolled in a randomized phase II trial of preoperative weekly cisplatin, paclitaxel and daily everolimus or placebo for 12 weeks, until definitive surgery...
March 7, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28258428/ecotoxicological-characterization-of-polyoxyethylene-glycerol-ester-non-ionic-surfactants-and-their-mixtures-with-anionic-and-non-ionic-surfactants
#7
Francisco Ríos, Alejandro Fernández-Arteaga, Manuela Lechuga, Mercedes Fernández-Serrano
This paper reports on a study that investigated the aquatic toxicity of new non-ionic surfactants derived from renewable raw materials, polyoxyethylene glycerol ester (PGE), and their binary mixtures with anionic and non-ionic surfactants. Toxicity of pure PGEs was determined using representative organisms from different trophic levels: luminescent bacteria (Vibrio fischeri), microalgae (Pseudokirchneriella subcapitata), and freshwater crustaceans (Daphnia magna). Relationships between toxicity and the structural parameters such as unit of ethylene oxide (EO) and hydrophilic-lipophilic balance (HLB) were evaluated...
March 3, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28249908/kinome-wide-rna-interference-screen-reveals-a-role-for-pdk1-in-acquired-resistance-to-cdk4-6-inhibition-in-er-positive-breast-cancer
#8
Valerie M Jansen, Neil E Bhola, Joshua A Bauer, Luigi Formisano, Kyung-Min Lee, Katherine E Hutchinson, Agnieszka K Witkiewicz, Preston D Moore, Monica Valeria Estrada, Violeta Sanchez, Paula G Ericsson, Melinda Sanders, Paula R Pohlmann, Michael J Pishvaian, David A Riddle, Wenyi Wei, Teresa C Dugger, Erik Knudsen, Carlos L Arteaga
To discover mechanisms of resistance to CDK4/6 inhibitors, we used a kinome-wide siRNA screen to identify kinases that, when downregulated, promote sensitivity to ribociclib. We identified 3-phosphoinositide dependent protein kinase 1 (PDK1) as the top siRNA that sensitized ER+ MCF-7 cells to ribociclib. Pharmacological inhibition of PDK1 with GSK2334470 in combination with ribociclib or palbociclib, synergistically inhibited proliferation and increased apoptosis in a panel of ER+ breast cancer cell lines. Ribociclib-resistant MCF-7, T47D and HCC1428 cells, selected after chronic drug exposure, displayed increased levels of PDK1, P-RSK2, P-AKT and P-S6 compared to parental drug-sensitive cells...
March 1, 2017: Cancer Research
https://www.readbyqxmd.com/read/28248367/historical-revision-of-the-differential-stokes-mueller-formalism-discussion
#9
Oriol Arteaga
The differential Stokes-Mueller matrix formalism expresses the local evolution of the Mueller matrix or the Stokes parameters for light propagating through a homogeneous optical medium. This paper presents a historical revision of the development of the differential Stokes-Mueller matrix formalism and highlights several important early contributions that have been overlooked. Particularly relevant is that this formalism was pioneered as early as 1929 by Paul Soleillet, almost 50 years earlier than it has been usually assumed...
March 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/28248204/inhibition-of-tgf-%C3%AE-with-neutralizing-antibodies-prevents-radiation-induced-acceleration-of-metastatic-cancer-progression
#10
Swati Biswas, Marta Guix, Cammie Rinehart, Teresa C Dugger, Anna Chytil, Harold L Moses, Michael L Freeman, Carlos L Arteaga
No abstract text is available yet for this article.
March 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28240341/factors-influencing-cardiometabolic-risk-profile-in-patients-with-psoriasis
#11
Neus Curcó, Nuria Barriendos, Maria José Barahona, Carmen Arteaga, Mercedes García, Stanislav Yordanov, Olimpia De La Barrera, Carolina Prat, Pere Vives, Nuria Giménez
BACKGROUND: Psoriasis has been associated with metabolic syndrome and with an increased cardiovascular risk especially in patients with severe disease. The goal of this study was to estimate the prevalence of metabolic syndrome and other cardiovascular risk factors and its association with the psoriasis severity, sex and age. METHODS: Consecutive patients with psoriasis were enrolled in a prospective study over a 1-year period. Blood samples were collected. Psoriasis area and severity index (PASI) and body surface area scores and two dermatology quality of life (DQOL) questionnaires were used to evaluate psoriasis severity and the impact of the disease...
February 27, 2017: Australasian Journal of Dermatology
https://www.readbyqxmd.com/read/28231402/ex-vivo-visualization-of-human-ciliated-epithelium-and-quantitative-analysis-of-induced-flow-dynamics-by-using-optical-coherence-tomography
#12
Yuye Ling, Xinwen Yao, Ute A Gamm, Emilio Arteaga-Solis, Charles W Emala, Michael A Choma, Christine P Hendon
BACKGROUND AND OBJECTIVE: Cilia-driven mucociliary clearance is an important self-defense mechanism of great clinical importance in pulmonary research. Conventional light microscopy possesses the capability to visualize individual cilia and its beating pattern but lacks the throughput to assess the global ciliary activities and flow dynamics. Optical coherence tomography (OCT), which provides depth-resolved cross-sectional images, was recently introduced to this area. MATERIALS AND METHODS: Fourteen de-identified human tracheobronchial tissues are directly imaged by two OCT systems: one system centered at 1,300 nm with 6...
February 23, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28198924/the-issue-of-race-in-the-work-of-domingos-guedes-cabral
#13
Juanma Sánchez Arteaga, Ronnie Jorge Tavares de Almeida, Charbel Niño El-Hani
In 1875 Bahia, medicine and evolutionism were used by the physician, journalist, and republican militant Domingos Guedes Cabral as ideological weapons to propose a radical program of social reforms in Brazil in the areas of education, marriage control, medical care to the alienated, changes in the penal system, etc., all of which were based on the scientific knowledge of that time. Among the social ideas of Guedes Cabral, the question of race will be the main focus of this analysis. In this sense, Domingos Guedes Cabral is a particularly significant example for understanding the initial steps in the peculiar alliance between evolutionism, medicine, and scientific racism in Brazil since the 1870s, when Darwinism first arrived in the country...
December 2016: História, Ciências, Saúde—Manguinhos
https://www.readbyqxmd.com/read/28188683/functional-kras-mutations-and-a-potential-role-for-pi3k-akt-activation-in-wilms-tumors
#14
Dina Polosukhina, Harold D Love, Hernan Correa, Zengliu Su, Kimberly B Dahlman, William Pao, Harold L Moses, Carlos L Arteaga, Harold N Lovvorn, Roy Zent, Peter E Clark
Wilms tumor (WT) is the most common renal neoplasm of childhood and affects 1 in 10,000 children aged less than 15 years. These embryonal tumors are thought to arise from primitive nephrogenic rests that derive from the metanephric mesenchyme during kidney development and are characterized partly by increased Wnt/β-catenin signaling. We previously showed that coordinate activation of Ras and β-catenin accelerates the growth and metastatic progression of a murine WT model. Here, we show that activating KRAS mutations can be found in human WT...
February 11, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28185696/mediterranean-diet-adherence-by-patients-with-primary-open-angle-glaucoma
#15
J A Abreu-Reyes, D Álvarez-Luis, V Arteaga-Hernández, M Sánchez-Mendez, R Abreu-González
OBJECTIVE: To study the adherence to the Mediterranean diet in patients affected by primary open angle glaucoma (POAG). MATERIALS AND METHODS: An observational study was conducted to assess the adherence to the Mediterranean diet in patients affected by POAG, and who attended the Ophthalmology Department of the Canary Islands University Hospital. The study included completing a 14-item questionnaire validated by the PREDIMED Study, in person or by telephone. RESULTS: A total of 100 questionnaires were completed successfully by 50 males and 50 females...
February 6, 2017: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/28144393/percutaneous-drainage-as-a-first-therapeutic-step-prior-to-surgery-in-liver-hydatid-cyst-abscess-is-it-worth-it
#16
Aylhin J Lopez-Marcano, Jose M Ramia, Vladimir Arteaga, Roberto De la Plaza, Jhonny D Gonzales, Anibal Medina
AIM: To delay surgery until the patient is in a better condition, and thus to decrease postoperative morbidity. METHODS: Using this algorithm we treated three patients aged 55, 75 and 80 years. In all three patients the clinical presentation was fever without a clear source of infection; all had nonspecific symptoms such as general malaise, dyspnea, and abdominal discomfort in the previous 15 d. They came to the emergency room at our hospital due to deterioration of their general condition...
January 18, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28134843/role-of-antioxidants-in-neonatal-hypoxic-ischemic-brain-injury-new-therapeutic-approaches
#17
REVIEW
Olatz Arteaga, Antonia Álvarez, Miren Revuelta, Francisco Santaolalla, Andoni Urtasun, Enrique Hilario
Hypoxic-ischemic brain damage is an alarming health and economic problem in spite of the advances in neonatal care. It can cause mortality or detrimental neurological disorders such as cerebral palsy, motor impairment and cognitive deficits in neonates. When hypoxia-ischemia occurs, a multi-faceted cascade of events starts out, which can eventually cause cell death. Lower levels of oxygen due to reduced blood supply increase the production of reactive oxygen species, which leads to oxidative stress, a higher concentration of free cytosolic calcium and impaired mitochondrial function, triggering the activation of apoptotic pathways, DNA fragmentation and cell death...
January 28, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28124919/direct-catalytic-asymmetric-aldol-reaction-of-%C3%AE-alkylamides
#18
Zijian Liu, Toshifumi Takeuchi, Roman Pluta, Fernando Arteaga Arteaga, Naoya Kumagai, Masakatsu Shibasaki
A catalytic asymmetric aldol reaction directly employing amides as latent enolates has remained elusive because of the resistance of amides to enolization. A direct aldol reaction of α-alkylamides without any electron-withdrawing group harnessed by specific activation of 7-azaindoline amides under soft Lewis acid/Brønsted base cooperative catalysis is reported. Diastereo- and enantioselective coupling with ynals and aromatic aldehydes as well as divergent functional group interconversion of the amide provided expeditious access to a variety of aliphatic and aromatic chiral building blocks...
January 26, 2017: Organic Letters
https://www.readbyqxmd.com/read/28112343/-intestinal-obstruction-due-to-ascaris-lumbricoides-infection-in-a-geriatric-patient
#19
Alfredo Chiappe, Kovy Arteaga, Cristhian Resurrección, Marcos Ñavincopa, Eduardo Ticona
Ascaris lumbricoides is considered the largest intestinal nematode with a higher incidence in the childhood, representing a truly medical and public health problem, principally in undeveloped countries. We present the case of an 83 year old man, born and coming from the amazon region, without any relevant previous history of disease, admitted in the emergency department of our hospital for presenting intestinal obstruction and also presumptive biliary obstruction due to multiple balls of parasites, requiring immediate surgical intervention...
October 2016: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/28105702/hydrodynamic-effects-in-soft-matter-self-assembly-the-case-of-j-aggregates-of-amphiphilic-porphyrins
#20
REVIEW
Josep M Ribo, Zoubir El-Hachemi, Oriol Arteaga, Adolf Canillas, Joaquim Crusats
Chiral J-aggregates of achiral amphiphilic porphyrins (4-sulfonatophenyl and aryl meso-substituted porphyrins) show several effects under the hydrodynamic forces of common stirring. These effects can be classified as pure mechanic (e. g. elasticity, plasticity and breaking of the self-assembly non-covalent bonding) and chemically selective as detected in the formation/growth of the nanoparticles. Diastereoselective, enantioselective and, depending on the sign of chiral shear forces, even enantiospecific selections have been described...
January 20, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
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