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https://www.readbyqxmd.com/read/28933135/headache-in-a-young-woman-do-not-forget-susac-s-syndrome
#1
A Kefi, F Said, T Ben Salem, M Khedher, M Khanfir, I Ben Ghorbel, M Lamloum, M H Houman
Susac syndrome is a rare disease characterized by the clinical triad of encephalopathy, branch retinal artery occlusion, and sensorineural hearing loss. This underdiagnosed condition needs to be considered in the differential diagnosis of a broad variety of disorders. An early diagnosis is important as treatment can halt disease progression and prevent permanent disability. Herein, we report a case of Susac syndrome in a 31-year-old woman and we highlight how challenging an early diagnosis was and the importance of an aggressive therapeutic approach, including the combination of steroids and other cytotoxic drugs...
September 21, 2017: Reumatismo
https://www.readbyqxmd.com/read/28932164/assessment-of-perceived-needs-and-preferences-with-regard-to-the-education-of-residents-in-medical-ethics-in-king-abdulaziz-university-hospital
#2
Ranya A Ghamri, Rajaa M Al-Raddadi
INTRODUCTION: Medical ethics is the branch of ethics that deals with moral issues in medical practice. Many postgraduate training programs have developed educational interventions in ethics to meet accreditation standards and prepare learners for certification examinations and clinical practice. The aim of this study was to assess the attitude of residents in King Abdulaziz University Hospital (KAUH) toward the need for ethics education and identify the most effective methods of teaching ethical issues...
September 2017: Journal of Family & Community Medicine
https://www.readbyqxmd.com/read/28931841/atomic-scale-formation-mechanism-of-edge-dislocation-relieving-lattice-strain-in-a-gesi-overlayer-on-si-001
#3
E Maras, L Pizzagalli, T Ala-Nissila, H Jónsson
Understanding how edge misfit dislocations (MDs) form in a GeSi/Si(001) film has been a long standing issue. The challenge is to find a mechanism accounting for the presence of these dislocations at the interface since they are not mobile and cannot nucleate at the surface and glide towards the interface. Furthermore, experiments can hardly detect the nucleation and early stages of growth because of the short time scale involved. Here we present the first semi-quantitative atomistic calculation of the formation of edge dislocations in such films...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28928506/perennial-legumes-as-a-source-of-ingredients-for-healthy-food-proximate-mineral-and-phytoestrogen-composition-and-antibacterial-activity
#4
Bronislava Butkutė, Audrius Padarauskas, Jurgita Cesevičienė, Alvydas Pavilonis, Lukas Taujenis, Nijolė Lemežienė
ABSTRACT: Perennial legumes have been used as edible or medicinal plants since ancient times. The focus of the current study are perennial legumes-Trifolium pratense L., T. medium L., Medicago sativa L., M. lupulina L., Onobrychis viciifolia Scop., Astragalus glycyphyllos L. and A. cicer L.-of branching stage as a potential source of value-added ingredients for healthy food. Freeze-dried samples were analysed for proximal composition, mineral, isoflavone and coumestrol contents as well as for antimicrobial activity...
August 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28928045/the-electrocardiographic-triangular-qrs-st-t-waveform-pattern-in-patients-with-st-segment-elevation-myocardial-infarction-incidence-pathophysiology-and-clinical-implications
#5
Alberto Cipriani, Gianpiero D'Amico, Giulia Brunello, Martina Perazzolo Marra, Federico Migliore, Luisa Cacciavillani, Giuseppe Tarantini, Barbara Bauce, Sabino Iliceto, Domenico Corrado, Alessandro Zorzi
BACKGROUND: A specific ECG pattern of presentation of ST-segment elevation acute myocardial infarction (STEMI), characterized by "triangular QRS-ST-T waveform" (TW), has been associated with poor in-hospital prognosis but longitudinal data on its incidence and clinical impact are lacking. We prospectively evaluated the incidence and prognostic meaning of the TW pattern in a cohort of consecutive STEMI patients. METHODS: All STEMI patients who presented within 12h of symptoms onset and showed no complete bundle branch block or paced ventricular rhythm were included...
August 16, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28927610/structure-and-immunomodulatory-activity-of-a-sulfated-agarose-with-pyruvate-and-xylose-substitutes-from-polysiphonia-senticulosa-harvey
#6
Xiaoliang Zhao, Guangling Jiao, Yi Yang, Miaomiao Li, Qinying Li, Xiaojiang Wang, Chao Cai, Guoyun Li, Jiejie Hao, Guangli Yu
A charged and size uniform polysaccharide PS2 was prepared from red seaweed Polysiphonia senticulosa Harvey. Based on nuclear magnetic resonance (NMR), fourier transform infrared (FTIR) spectroscopy, and electrospray ionization collision-induced-dissociation mass spectrometry (ESI-CID-MS(n)) analysis, PS2 was determined to be a novel 6-O-sulfated agarose which was mainly composed of a repeating unit of alternating (1→3)-linked 6-sulfated-β-d-galactose and (1→4)-linked 3,6-anhydro-α-l-galactose in association with small amount of pyruvate substituted on galactose residues and xylose (Xyl) branched at C2 position of 3,6-anhydro-galactose...
November 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28925736/chronological-changes-in-tip-cells-during-sprouting-angiogenesis-of-development-of-the-retinal-vasculature-in-newborn-mice
#7
Chang Sik Cho, Sang-Mok Lee, Byung Joo Lee, Dong Hyun Jo, Jin Hyoung Kim, Jeong Hun Kim, Young Suk Yu
PURPOSE: To investigate a sequential chronological change in tip cells during the development of the retinal vasculature in newborn mice. MATERIALS AND METHODS: Newborn C57BL/6 mice were used for this study. To elucidate the patterns in the developing retinal vasculature, histology, and immunohistochemistry-antiplatelet endothelial cell adhesion molecule-1, anticollagen type IV, isolectin IB4-were performed on sections of mouse retina on postnatal days (P)-4, -8, and -12...
September 19, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28925392/atypical-e2fs-inhibit-tumor-angiogenesis
#8
B G M W Weijts, B Westendorp, B T Hien, L M Martínez-López, M Zijp, I Thurlings, R E Thomas, S Schulte-Merker, W J Bakker, A de Bruin
Atypical E2F transcription factors (E2F7 and E2F8) function as key regulators of cell cycle progression and their inactivation leads to spontaneous cancer formation in mice. However, the mechanism of the tumor suppressor functions of E2F7/8 remain obscure. In this study we discovered that atypical E2Fs control tumor angiogenesis, one of the hallmarks of cancer. We genetically inactivated atypical E2Fs in epithelial and mesenchymal neoplasm and analyzed blood vessel formation in three different animal models of cancer...
September 18, 2017: Oncogene
https://www.readbyqxmd.com/read/28923586/genetic-code-asymmetry-supports-diversity-through-experimentation-with-posttranslational-modifications
#9
REVIEW
James W Dennis
Protein N-glycosylation has been identified in all three domains of life presumably conserved for its early role in glycoprotein folding. However, the N-glycans added to proteins in the secretory pathway of multicellular organisms are remodeling in the Golgi, increasing structural diversity exponentially and adding new layers of functionality in immunity, metabolism and other systems. The branching and elongation of N-glycan chains found on cell surface receptors generates a gradation of affinities for carbohydrate-binding proteins, the galectin, selectin and siglec families...
September 15, 2017: Current Opinion in Chemical Biology
https://www.readbyqxmd.com/read/28918617/right-ventricular-thrombosis-combined-with-fetal-death-and-acrocyanosis-in-pregnancy
#10
Feridoun Sabzi, Aghigh Heidari
Prepartum or postpartum right ventricular thrombosis (RVT) is an exceedingly rare and potentially lethal phenomenon in pregnancy. We here report a case of a pregnant patient with near term pregnancy admitted for dyspnea, amniotic fluids discharge and labor pain in a gynecology center that an eight-month dead fetus was diagnosed and delivered vaginally by induction. A post delivery period was complicated by aggravation of her dyspnea and pleuritic chest pain that she referred for further evaluation in our cardiac center...
July 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28917919/structural-characteristics-of-water-soluble-polysaccharides-from-norway-spruce-picea-abies
#11
Evgeny G Shakhmatov, Vladimir A Belyy, Elena N Makarova
Arabinogalactan proteins and pectic polysaccharides were isolated from greenery of Picea abies by water extraction. Main elements of their structure were determined by ion-exchange chromatography, partial acid and enzymatic hydrolysis, and NMR spectroscopy. It was established that the backbone of pectin macromolecules of greenery of P. abies is represented by segments of partially methyl-esterified and acetylated 1,4-α-d-galactopyranosyluronan, and partially 2-O- and/or 3-O-acetylated RG-I with side chains consisting of highly-branched 1,5-α-l-arabinan segments...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28914856/-the-russian-consensus-on-the-diagnosis-and-treatment-of-chronic-pancreatitis-enzyme-replacement-therapy
#12
I E Khatkov, I V Maev, D S Bordin, Yu A Kucheryavyi, S R Abdulkhakov, S A Alekseenko, E I Alieva, R B Alikhanov, I G Bakulin, A Yu Baranovsky, E V Beloborodova, E A Belousova, I M Buriev, E V Bystrovskaya, S V Vertyankin, L V Vinokurova, E I Galperin, A V Gorelov, V B Grinevich, M V Danilov, V V Darvin, E A Dubtsova, T G Dyuzheva, V I Egorov, M G Efanov, N V Zakharova, V E Zagainov, V T Ivashkin, R E Izrailov, N V Korochanskaya, E A Kornienko, V L Korobka, N Yu Kokhanenko, M A Livzan, I D Loranskaya, K A Nikolskaya, M F Osipenko, A V Okhlobystin, V D Pasechnikov, E Yu Plotnikova, S I Polyakova, O A Sablin, V I Simanenkov, N I Ursova, V V Tsvirkun, V V Tsukanov, A V Shabunin
Pancreatology Club Professional Medical Community, 1A.S. Loginov Moscow Clinical Research and Practical Center, Moscow Healthcare Department, Moscow; 2A.I. Evdokimov Moscow State University of Medicine and Dentistry, Ministry of Health of Russia, Moscow; 3Kazan State Medical University, Ministry of Health of Russia, Kazan; 4Kazan (Volga) Federal University, Kazan; 5Far Eastern State Medical University, Ministry of Health of Russia, Khabarovsk; 6Morozov City Children's Clinical Hospital, Moscow Healthcare Department, Moscow; 7I...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28914135/hemodynamic-and-anatomic-predictors-of-renovisceral-stent-graft-occlusion-following-chimney-endovascular-repair-of-juxtarenal-aortic-aneurysms
#13
Rosamaria Tricarico, Yong He, Liza Laquian, Salvatore T Scali, Roger Tran-Son-Tay, Adam W Beck, Scott A Berceli
PURPOSE: To identify anatomic and hemodynamic changes associated with impending visceral chimney stent-graft occlusion after endovascular aneurysm repair (EVAR) with the chimney technique (chEVAR). METHODS: A retrospective evaluation was performed of computed tomography scans from 41 patients who underwent juxtarenal chEVAR from 2008 to 2012 to identify stent-grafts demonstrating conformational changes following initial placement. Six subjects (mean age 74 years; 3 men) were selected for detailed reconstruction and computational hemodynamic analysis; 4 had at least 1 occluded chimney stent-graft...
September 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28914054/total-synthesis-of-glycinocins-a-c
#14
Leo Corcilius, Nabiha T Elias, Jessica L Ochoa, Roger G Linington, Richard J Payne
The glycinocins are a class of calcium dependent, acidic cyclolipopeptide antibiotics structurally related to the clinically approved daptomycin. Herein, we describe a divergent total synthesis of glycinocins A-C, which differ in the structure of a branched α,β-unsaturated fatty acyl moiety. The three natural products exhibited calcium-dependent antimicrobial activity against Staphylococcus aureus and Bacillus subtilis with MICs ranging from 5.5 - 17 μM.
September 15, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28913769/plantactinospora-solaniradicis-sp-nov-a-novel-actinomycete-isolated-from-the-root-of-a-tomato-plant-solanum-lycopersicum-l
#15
Wenchao Li, Xiaowei Guo, Linlin Shi, Junwei Zhao, Liangliang Yan, Xiaotong Zhong, Chen Zhang, Yufei Chen, Xiangjing Wang, Wensheng Xiang
A Gram-positive, non-motile actinomycete, designated strain NEAU-FJL1(T), was isolated from tomato root (Solanum lycopersicum L.) collected from Harbin, Heilongjiang province, north China. The strain formed single spores with smooth surfaces from substrate mycelia. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain NEAU-FJL1(T) should be affiliated with the genus Plantactinospora and forms a distinct branch with its close neighbour Plantactinospora soyae NEAU-gxj3(T) (99.2% sequence similarity)...
September 14, 2017: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/28912692/calsyntenins-are-expressed-in-a-dynamic-and-partially-overlapping-manner-during-neural-development
#16
Gemma de Ramon Francàs, Tobias Alther, Esther T Stoeckli
Calsyntenins form a family of linker proteins between distinct populations of vesicles and kinesin motors for axonal transport. They were implicated in synapse formation and synaptic plasticity by findings in worms, mice and humans. These findings were in accordance with the postsynaptic localization of the Calsyntenins in the adult brain. However, they also affect the formation of neural circuits, as loss of Calsyntenin-1 (Clstn1) was shown to interfere with axonal branching and axon guidance. Despite the fact that Calsyntenins were discovered originally in embryonic chicken motoneurons, their distribution in the developing nervous system has not been analyzed in detail so far...
2017: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/28905070/sodium-cationized-carbohydrate-gas-phase-fragmentation-chemistry-influence-of-glycosidic-linkage-position
#17
Jordan M Rabus, Maha T Abutokaikah, Reginald T Ross, Benjamin J Bythell
We investigate the gas-phase structures and fragmentation chemistry of two isomeric sodium-cationized carbohydrates using combined tandem mass spectrometry, hydrogen/deuterium exchange experiments, and computational methods. Our model systems are the glucose-based disaccharide analytes cellobiose (β-d-glucopyranosyl-(1 → 4)-d-glucose) and gentiobiose (β-d-glucopyranosyl-(1 → 6)-d-glucose). These analytes show substantially different tandem mass spectra. We characterize the rate-determining barriers to both the glycosidic and structurally-informative cross-ring bond cleavages...
September 14, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28901827/retrograde-nuclear-transport-from-the-cytoplasm-is-required-for-trna-tyr-maturation-in-t-brucei
#18
Alan C Kessler, Sneha S Kulkarni, Mellie J Paulines, Mary Anne T Rubio, Patrick A Limbach, Zdeněk Paris, Juan D Alfonzo
Retrograde transport of tRNAs from the cytoplasm to the nucleus was first described in Saccharomyces cerevisiae and most recently in mammalian systems. Although the function of retrograde transport is not completely clear, it plays a role in the cellular response to changes in nutrient availability. Under low nutrient conditions tRNAs are sent from the cytoplasm to nucleus and presumably remain in storage there until nutrient levels improve. However, in S. cerevisiae tRNA retrograde transport is constitutive and occurs even when nutrient levels are adequate...
September 13, 2017: RNA Biology
https://www.readbyqxmd.com/read/28899914/military-training-elicits-marked-increases-in-plasma-metabolomic-signatures-of-energy-metabolism-lipolysis-fatty-acid-oxidation-and-ketogenesis
#19
J Philip Karl, Lee M Margolis, Nancy E Murphy, Christopher T Carrigan, John W Castellani, Elisabeth H Madslien, Hilde-Kristin Teien, Svein Martini, Scott J Montain, Stefan M Pasiakos
Military training studies provide unique insight into metabolic responses to extreme physiologic stress induced by multiple stressor environments, and the impacts of nutrition in mediating these responses. Advances in metabolomics have provided new approaches for extending current understanding of factors modulating dynamic metabolic responses in these environments. In this study, whole-body metabolic responses to strenuous military training were explored in relation to energy balance and macronutrient intake by performing nontargeted global metabolite profiling on plasma collected from 25 male soldiers before and after completing a 4-day, 51-km cross-country ski march that produced high total daily energy expenditures (25...
September 2017: Physiological Reports
https://www.readbyqxmd.com/read/28899738/angiomyomatous-hamartoma-of-lymph-nodes-revisited-clinico-pathologic-study-of-21-cases-emphasizing-its-distinction-from-lymphangioleiomyomatosis-of-lymph-nodes
#20
Michelle Moh, Ankur Sangoi, Joseph T Rabban
Angiomyomatous hamartoma of lymph nodes (AMH-LN) is an uncommon benign proliferation of smooth muscle, blood vessels, collagenous stroma and adipocytes, most commonly affecting inguinal LN. A similar constellation of cell types constitutes various members of the perivascular epithelioid cell tumor (PEComa) family, including lymphangioleiomyomatosis (LAM) which can involve LN in women. Because some LN-LAM patients have tuberous sclerosis complex (TSC) and/or other PEComa family lesions, it is clinically relevant to distinguish LN-LAM from AMH-LN...
September 9, 2017: Human Pathology
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