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https://www.readbyqxmd.com/read/28208932/spontaneous-rupture-of-the-main-pancreatic-duct-synchronous-with-a-multi-focal-microscopic-pancreatic-adenocarcinoma-a-case-report
#1
Shirly Shohat, Katerina Shulman, Boris Kessel, Oren Gal, Abdel Rauf Zeina
Pancreatic cancer is one of the most lethal types of malignant tumours, commonly diagnosed at an advanced stage. The only curative treatment for this fatal disease is surgery and early diagnosis is the key to a better outcome and prognosis. In this case report we present a 57-year-old woman presenting to the emergency room with abdominal pain and weight loss. Computer Tomography (CT) imaging showed a rupture of the main pancreatic duct and a peri-pancreatic fluid collection with no evidence of a pancreatic mass...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28193868/dopamine-in-the-medial-amygdala-network-mediates-human-bonding
#2
Shir Atzil, Alexandra Touroutoglou, Tali Rudy, Stephanie Salcedo, Ruth Feldman, Jacob M Hooker, Bradford C Dickerson, Ciprian Catana, Lisa Feldman Barrett
Research in humans and nonhuman animals indicates that social affiliation, and particularly maternal bonding, depends on reward circuitry. Although numerous mechanistic studies in rodents demonstrated that maternal bonding depends on striatal dopamine transmission, the neurochemistry supporting maternal behavior in humans has not been described so far. In this study, we tested the role of central dopamine in human bonding. We applied a combined functional MRI-PET scanner to simultaneously probe mothers' dopamine responses to their infants and the connectivity between the nucleus accumbens (NAcc), the amygdala, and the medial prefrontal cortex (mPFC), which form an intrinsic network (referred to as the "medial amygdala network") that supports social functioning...
February 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28157853/long-period-fiber-gratings-with-off-resonance-spectral-response-based-on-mechanical-oscillations
#3
Shir Shahal, Avi Klein, Gilad Masri, Hamootal Duadi, Moti Fridman
We present long period fiber gratings with off-resonance spectral response. Our long period fiber gratings are created by the periodic structure of large perturbations in the fiber diameter. These perturbations result in unique spectral response, even in off-resonance frequencies. Writing these long period fiber gratings is based on utilizing the mechanical vibrations of tapered fibers during the tapering process. This writing method is simple and robust; it has high efficiency, high reproducibility, and low polarization dependency; and it enables real-time tunability of the periodicity, efficiency, and length of the grating...
February 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/28157325/deposition-and-characterization-of-roughened-surfaces
#4
Hagit Aviv, Shirly Berezin, Ortal Agai, Miri Sinwani, Yaakov R Tischler
Phase separation occurs whenever a solvent leaves a solution of strongly incompatible polymers. This can happen in a bulk and in films. Films can be tailored as substrates for multiple applications, such as solar cells, surface catalysis, and anti-reflection coatings. In this research, polystyrene (PS) was dissolved with polyvinyl acetate (PVAc) in a few different ratios using chlorobenzene as the solvent. Thin films of the different ratios were deposited on glass via spin coating. The deposited films were investigated for morphology, strain, surface area and Raman scattering...
February 3, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28150850/chewing-versus-swallowing-ticagrelor-to-accelerate-platelet-inhibitionin-acute-coronary-syndrome-the-cheers-study-for-the-platis-platelets-and-thrombosis-in-sheba-study-group
#5
Elad Asher, Shir Frydman, Moshe Katz, Ehud Regev, Avi Sabbag, Israel Mazin, Arsalan Abu-Much, Andrew Kukuy, Anna Mazo, Aharon Erez, Anat Berkovitch, Michael Narodistky, Israel Barbash, Amit Segev, Roy Beigel, Shlomi Matetzky
It was the study objective to evaluate whether chewing a 180 mg loading dose of ticagrelor versus an equal dose of traditional oral administration, enhances inhibition of platelet aggregation 1 hour (h) after administering a ticagrelor loading dose in non-ST elevation myocardial infarction (NSTEMI) patients. Dual anti-platelet therapy represents standard care for treating NSTEMI patients. Ticagrelor is a direct acting P2Y12 inhibitor and, unlike clopidogrel and prasugrel, does not require metabolic activation...
February 2, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28143954/early-treatment-intensification-with-r-ice-and-90y-ibritumomab-tiuxetan-zevalin-beam-stem-cell-transplantation-in-patients-with-high-risk-diffuse-large-b-cell-lymphoma-patients-and-positive-interim-pet-after-4-cycles-of-r-chop-14
#6
Mark Hertzberg, Maher K Gandhi, Judith Trotman, Belinda Butcher, John Taper, Amanda Johnston, Devinder Gill, Shir-Jing Ho, Gavin Cull, Keith Fay, Geoff Chong, Andrew Grigg, Ian D Lewis, Sam Milliken, William Renwick, Uwe Hahn, Robin Filshie, George Kannourakis, Anne-Marie Watson, Pauline Warburton, Andrew Wirth, John F Seymour, Michael S Hofman, Rodney J Hicks
In the treatment of diffuse large B-cell lymphoma, a persistently positive [(18)F]fluorodeoxyglucose positron emission tomography (PET) scan typically carries a poor prognosis. In this prospective multi-center phase II study, we sought to establish whether treatment intensification with R-ICE (rituximab, ifosfamide, carboplatin, and etoposide) chemotherapy followed by 90Y-ibritumomab tiuxetan-BEAM (BCNU, etoposide, cytarabine, and melphalan) for high-risk diffuse large B-cell lymphoma patients who are positive on interim PET scan after 4 cycles of R-CHOP-14 (rituximab, cyclophosphamide, doxorubicin, and prednisone) can improve 2-year progression-free survival from a historically unfavorable rate of 40% to a rate of 65%...
February 2017: Haematologica
https://www.readbyqxmd.com/read/28137901/complications-of-dysgerminoma-meeting-the-health-needs-of-patients-in-conflict-zones
#7
Lili Hayari, Erez Shir On, Andrei Fedorenko, Szvalb Sergio, Jamal Zidan, Evgeny Solomonov
A symptom of prolonged conflict is the destruction of infrastructure and healthcare systems. While the need for acute trauma services is obvious in conflict zones, patients with chronic diseases also require care. This report describes the clinical course of a young teenage girl with a large mid pelvic tumour originating from the left ovary and reaching the umbilicus. She presented with acute abdominal pain and underwent surgery in a healthcare facility within a conflict zone. She was then transferred to a neighbouring country for continuing care...
January 30, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28128933/computational-sensing-using-low-cost-and-mobile-plasmonic-readers-designed-by-machine-learning
#8
Zachary S Ballard, Daniel Shir, Aashish Bhardwaj, Sarah Bazargan, Shyama Sathianathan, Aydogan Ozcan
Plasmonic sensors have been used for a wide range of biological and chemical sensing applications. Emerging nanofabrication techniques have enabled these sensors to be cost-effectively mass manufactured onto various types of substrates. To accompany these advances, major improvements in sensor read-out devices must also be achieved to fully realize the broad impact of plasmonic nanosensors. Here, we propose a machine learning framework which can be used to design low-cost and mobile multispectral plasmonic readers that do not use traditionally employed bulky and expensive stabilized light sources or high-resolution spectrometers...
February 1, 2017: ACS Nano
https://www.readbyqxmd.com/read/28117327/telomeres-in-icf-syndrome-cells-are-vulnerable-to-dna-damage-due-to-elevated-dna-rna-hybrids
#9
Shira Sagie, Shir Toubiana, Stella R Hartono, Hagar Katzir, Aya Tzur-Gilat, Shany Havazelet, Claire Francastel, Guillaume Velasco, Frédéric Chédin, Sara Selig
DNA:RNA hybrids, nucleic acid structures with diverse physiological functions, can disrupt genome integrity when dysregulated. Human telomeres were shown to form hybrids with the lncRNA TERRA, yet the formation and distribution of these hybrids among telomeres, their regulation and their cellular effects remain elusive. Here we predict and confirm in several human cell types that DNA:RNA hybrids form at many subtelomeric and telomeric regions. We demonstrate that ICF syndrome cells, which exhibit short telomeres and elevated TERRA levels, are enriched for hybrids at telomeric regions throughout the cell cycle...
January 24, 2017: Nature Communications
https://www.readbyqxmd.com/read/28096334/role-of-cct-chaperonin-in-the-disassembly-of-mitotic-checkpoint-complexes
#10
Sharon Kaisari, Danielle Sitry-Shevah, Shirly Miniowitz-Shemtov, Adar Teichner, Avram Hershko
The mitotic checkpoint system prevents premature separation of sister chromatids in mitosis and thus ensures the fidelity of chromosome segregation. When this checkpoint is active, a mitotic checkpoint complex (MCC), composed of the checkpoint proteins Mad2, BubR1, Bub3, and Cdc20, is assembled. MCC inhibits the ubiquitin ligase anaphase promoting complex/cyclosome (APC/C), whose action is necessary for anaphase initiation. When the checkpoint signal is turned off, MCC is disassembled, a process required for exit from checkpoint-arrested state...
January 31, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28091805/correlation-between-systemic-lupus-erythematosus-and-malignancies-a-cross-sectional-population-based-study
#11
Shir Azrielant, Shmuel Tiosano, Abdulla Watad, Naim Mahroum, Aaron Whitby, Doron Comaneshter, Arnon D Cohen, Howard Amital
Autoimmune conditions reflect dysregulation of the immune system; this may be of clinical significance in the development of several malignancies. Previous studies show an association between systemic lupus erythematosus (SLE) and the development of malignancies; however, their investigations into the development of specific malignancies are inconsistent, and their external validity may be questionable. The main objective of this study is to investigate the association between the presence of SLE and various malignancies, in a large-scale population-based study...
January 14, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28080315/we-know-who-likes-us-but-not-who-competes-against-us
#12
Noah Eisenkraft, Hillary Anger Elfenbein, Shirli Kopelman
Research on dyadic meta-accuracy suggests that people can accurately judge how their acquaintances feel toward them. However, existing studies have focused exclusively on positive feelings, such as liking. We present the first research on dyadic meta-accuracy for competition, a common dynamic among work colleagues. Data from the sales staff at a car dealership and students working on project teams suggest that the prevailing model of dyadic meta-accuracy breaks down for judgments of competition. For liking, projecting one's own feelings promotes dyadic meta-accuracy because colleagues tend to reciprocate each other's liking...
February 2017: Psychological Science
https://www.readbyqxmd.com/read/28063725/despite-awareness-of-recommendations-why-do-health-care-workers-not-immunize-pregnant-women
#13
Anat Gesser-Edelsburg, Yaffa Shir-Raz, Samah Hayek, Sharon Aassaraf, Lior Lowenstein
Studies indicate uncertainty surrounding vaccination safety and efficacy for pregnant women, causing a central problem for health authorities. In this study, approximately 26% of participants do not recommend the tetanus, diphtheria, and acellular pertussis and influenza vaccines to their patients, although being aware of the health ministry recommendations. We found significant statistical discrepancies between the knowledge about the recommendations and their actual implementation, revealing the concerns of health care workers regarding vaccine safety...
January 4, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28060352/a-simple-way-to-measure-alterations-in-reward-seeking-behavior-using-drosophila-melanogaster
#14
Shir Zer, Julia Ryvkin, Harel J Wilner, Hila Zak, Anat Shmueli, Galit Shohat-Ophir
We describe a protocol for measuring ethanol self-administration in fruit flies (Drosophila melanogaster) as a proxy for changes in reward states. We demonstrate a simple way to tap into the fly reward system, modify experiences related to natural reward, and use voluntary ethanol consumption as a measure for changes in reward states. The approach serves as a relevant tool to study the neurons and genes that play a role in experience-mediated changes of internal state. The protocol is composed of two discrete parts: exposing the flies to rewarding and nonrewarding experiences, and assaying voluntary ethanol consumption as a measure of the motivation to obtain a drug reward...
December 15, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28059370/polarization-dependence-of-asymmetric-off-resonance-long-period-fiber-gratings
#15
Gilad Masri, Shir Shahal, Avi Klein, Hamootal Duadi, Moti Fridman
We present the polarization dependence of strong asymmetric long period fiber gratings written on tapered fibers. We found that for off-resonance conditions the spectral response and the output mode strongly depend on the input state of polarization. We utilize this dependence to obtain a mode selective device and demonstrate radially polarized and azimuthally polarized fiber lasers based on these asymmetric long period fiber gratings.
December 26, 2016: Optics Express
https://www.readbyqxmd.com/read/28032914/pleomorphic-mantle-cell-lymphoma-morphologically-mimicking-diffuse-large-b-cell-lymphoma-common-cyclin-d1-negativity-and-a-simple-immunohistochemical-algorithm-to-avoid-the-diagnostic-pitfall
#16
Wen-Yu Chuang, Hung Chang, Gwo-Jyh Chang, Tzu-Hao Wang, Yu-Sun Chang, Tong-Hong Wang, Chi-Ju Yeh, Shir-Hwa Ueng, Hui-Ping Chien, Chiu-Yueh Chang, Yung-Liang Wan, Chuen Hsueh
AIMS: To characterize the clinicopathologic and genetic features of pleomorphic mantle cell lymphoma (PMCL) which morphologically mimics diffuse large B-cell lymphoma (DLBCL). METHODS AND RESULTS: We systematically screened 500 B-cell lymphomas morphologically compatible with DLBCL using an immunohistochemical algorithm of three markers (CD5, cyclin D1 and SOX11). Ten cases of PMCL were identified for further study, and surprisingly four (40%) of them were cyclin D1-negative...
December 29, 2016: Histopathology
https://www.readbyqxmd.com/read/28031488/cd74-is-a-novel-transcription-regulator
#17
Naama Gil-Yarom, Lihi Radomir, Lital Sever, Matthias P Kramer, Hadas Lewinsky, Chamutal Bornstein, Ronnie Blecher-Gonen, Zohar Barnett-Itzhaki, Vita Mirkin, Gilgi Friedlander, Lev Shvidel, Yair Herishanu, Elias J Lolis, Shirly Becker-Herman, Ido Amit, Idit Shachar
CD74 is a cell-surface receptor for the cytokine macrophage migration inhibitory factor. Macrophage migration inhibitory factor binding to CD74 induces its intramembrane cleavage and the release of its cytosolic intracellular domain (CD74-ICD), which regulates cell survival. In the present study, we characterized the transcriptional activity of CD74-ICD in chronic lymphocytic B cells. We show that following CD74 activation, CD74-ICD interacts with the transcription factors RUNX (Runt related transcription factor) and NF-κB and binds to proximal and distal regulatory sites enriched for genes involved in apoptosis, immune response, and cell migration...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27987401/biodegradation-of-the-endocrine-disrupter-4-tert-octylphenol-by-the-yeast-strain-candida-rugopelliculosa-rrky5-via-phenolic-ring-hydroxylation-and-alkyl-chain-oxidation-pathways
#18
Ranjith Kumar Rajendran, Shir-Ly Huang, Chu-Ching Lin, Roland Kirschner
4-(1,1,3,3-tetramethylbutane)-phenol (4-tert-OP) is one of the most prevalent endocrine disrupting pollutants. Information about bioremediation of 4-tert-OP remains limited, and no study has been reported on the mechanism of 4-tert-OP degradation by yeasts. The yeast Candida rugopelliculosa RRKY5 was proved to be able to utilize 4-methylphenol, bisphenol A, 4-ethylphenol, 4-tert-butylphenol, 4-tert-OP, 4-tert-nonylphenol, isooctane, and phenol under aerobic conditions. The optimum conditions for 4-tert-OP degradation were 30°C, pH 5...
February 2017: Bioresource Technology
https://www.readbyqxmd.com/read/27987102/characteristics-of-mesenteric-lymphadenitis-in-comparison-with-those-of-acute-appendicitis-in-children
#19
Itai Gross, Yael Siedner-Weintraub, Shir Stibbe, David Rekhtman, Daniel Weiss, Natalia Simanovsky, Dan Arbell, Saar Hashavya
: Mesenteric lymphadenitis (ML) is considered as one of the most common alternative diagnosis in a child with suspected acute appendicitis (AA). In this retrospective study, patients diagnosed with ML (n = 99) were compared in terms of demographic, clinical, and laboratory findings to patients diagnosed with AA (n = 102). This comparison was applied for both lymph nodes smaller and larger than 10 mm. When compared to patients with AA, patients with ML had significantly longer duration of symptoms prior to emergency department (ED) presentation (2...
February 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/27941786/transcriptional-programs-that-control-expression-of-the-autoimmune-regulator-gene-aire
#20
Yonatan Herzig, Shir Nevo, Chamutal Bornstein, Miriam R Brezis, Sharon Ben-Hur, Aya Shkedy, Michal Eisenberg-Bord, Ben Levi, Michael Delacher, Yael Goldfarb, Eyal David, Leehee Weinberger, Sergey Viukov, Shifra Ben-Dor, Matthieu Giraud, Jacob H Hanna, Achim Breiling, Frank Lyko, Ido Amit, Markus Feuerer, Jakub Abramson
Aire is a transcriptional regulator that induces promiscuous expression of thousands of genes encoding tissue-restricted antigens (TRAs) in medullary thymic epithelial cells (mTECs). While the target genes of Aire are well characterized, the transcriptional programs that regulate its own expression have remained elusive. Here we comprehensively analyzed both cis-acting and trans-acting regulatory mechanisms and found that the Aire locus was insulated by the global chromatin organizer CTCF and was hypermethylated in cells and tissues that did not express Aire...
February 2017: Nature Immunology
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