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https://www.readbyqxmd.com/read/28731463/peroxisomes-protect-lymphoma-cells-from-hdac-inhibitor-mediated-apoptosis
#1
Michael S Dahabieh, ZongYi Ha, Erminia Di Pietro, Jessica N Nichol, Alicia M Bolt, Christophe Goncalves, Daphné Dupéré-Richer, Filippa Pettersson, Koren K Mann, Nancy E Braverman, Sonia V Del Rincón, Wilson H Miller
Peroxisomes are a critical rheostat of reactive oxygen species (ROS), yet their role in drug sensitivity and resistance remains unexplored. Gene expression analysis of clinical lymphoma samples suggests that peroxisomes are involved in mediating drug resistance to the histone deacetylase inhibitor (HDACi) Vorinostat (Vor), which promotes ROS-mediated apoptosis. Vor augments peroxisome numbers in cultured lymphoma cells, concomitant with increased levels of peroxisomal proteins PEX3, PEX11B, and PMP70. Genetic inhibition of peroxisomes, using PEX3 knockdown, reveals that peroxisomes protect lymphoma cells against Vor-mediated cell death...
July 21, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28718185/congenital-pulmonary-lymphangiectasia-a-disorder-not-only-of-fetoneonates
#2
Shi-Min Yuan
Congenital pulmonary lymphangiectasia (CPL) is a rare developmental disorder of the lung, characterized by dilation of pulmonary subpleural, interlobar, perivascular and peribronchial lymphatics. The incidence of CPL among stillborn and neonates was estimated to be <1%. The etiology of CPL is unknown. However, it has been suspected to be of a genetic background. Recent basic studies revealed that it might be caused by the FOXC2, Vegfr-3 and integrin α9β1gene mutations. A clinical diagnosis of CPL can be made much easier in full-term neonates who present with respiratory distress, pleural (especially chylous) effusions with or without generalized edema...
July 2017: Klinische Pädiatrie
https://www.readbyqxmd.com/read/28716764/influence-of-time-and-direction-information-on-video-head-impulse-gains
#3
Oğuz Yılmaz, Ersoy Öz, Serkan Kurt, Öyküm Esra Aşkın, Elifnur Taşdemir, Berna Özge Mutlu, Ahmet Keleş, Raşit Cevizci
OBJECTIVE: The objective of this study was to establish which factor leads to a higher vestibulo-ocular reflex (VOR) gain: the timing of the movement or the direction of the movement. For this purpose, healthy volunteers were examined under three conditions: (1) when they were informed about the timing of the head movement; (2) when they were informed about the direction of the head movement; and (3) when they knew both the timing and the direction of the head movement. MATERIALS AND METHODS: This study included data from 19 participants between the ages of 20 and 23 years with no neurological or vestibular ailments...
July 17, 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28714868/interval-dosing-with-the-hdac-inhibitor-vorinostat-effectively-reverses-hiv-latency
#4
Nancie M Archin, Jennifer L Kirchherr, Julia Am Sung, Genevieve Clutton, Katherine Sholtis, Yinyan Xu, Brigitte Allard, Erin Stuelke, Angela D Kashuba, Joann D Kuruc, Joseph Eron, Cynthia L Gay, Nilu Goonetilleke, David M Margolis
BACKGROUND: The histone deacetylase (HDAC) inhibitor vorinostat (VOR) can increase HIV RNA expression in vivo within resting CD4+ T cells of aviremic HIV+ individuals. However, while studies of VOR or other HDAC inhibitors have reported reversal of latency, none has demonstrated clearance of latent infection. We sought to identify the optimal dosing of VOR for effective serial reversal of HIV latency. METHODS: In a study of 16 HIV-infected, aviremic individuals, we measured resting CD4+ T cell-associated HIV RNA ex vivo and in vivo following a single exposure to VOR, and then in vivo after a pair of doses separated by 48 or 72 hours, and finally following a series of 10 doses given at 72-hour intervals...
July 17, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28677176/s1-leitlinie-lip%C3%A3-dem
#5
Stefanie Reich-Schupke, Wilfried Schmeller, Wolfgang Justus Brauer, Manuel E Cornely, Gabriele Faerber, Malte Ludwig, Gerd Lulay, Anya Miller, Stefan Rapprich, Dirk Frank Richter, Vivien Schacht, Klaus Schrader, Markus Stücker, Christian Ure
Die vorliegende überarbeitete Leitlinie zum Lipödem wurde unter der Federführung der Deutschen Gesellschaft für Phlebologie (DGP) erstellt und finanziert. Die Inhalte beruhen auf einer systematischen Literaturrecherche und dem Konsens von acht medizinischen Fachgesellschaften und Berufsverbänden. Die Leitlinie beinhaltet Empfehlungen zu Diagnostik und Therapie des Lipödems. Die Diagnose ist dabei auf der Basis von Anamnese und klinischem Befund zu stellen. Charakteristisch ist eine umschriebene, symmetrisch lokalisierte Vermehrung des Unterhautfettgewebes an den Extremitäten mit deutlicher Disproportion zum Stamm...
July 2017: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
https://www.readbyqxmd.com/read/28654923/antibakterielle-in-vitro-wirksamkeit-%C3%A3-therischer-%C3%A3-le-gegen-veterin%C3%A3-rmedizinisch-relevante-keime-klinischer-isolate-von-hunden-katzen-und-pferden
#6
Doris Bismarck, Marianne Schneider, Elisabeth Müller
Einleitung: Ätherische Öle sind die Grundlage der Aromatherapie. Unter anderem wird ihnen eine antibakterielle Wirkung zugeschrieben. In dieser Studie sollte die In-vitro-Wirksamkeit ätherischer Öle gegen ein breites Spektrum veterinärmedizinisch relevanter Erreger getestet werden. Methoden: Die antibakterielle Aktivität von 16 ätherischen Ölen wurde mittels Agardiffusionstest bestimmt. Getestet wurden grampositive und gramnegative Erreger, die aus klinischen Isolaten von Hunden, Katzen und Pferden aus der veterinärmedizinischen Routinediagnostik stammten...
2017: Complementary Medicine Research
https://www.readbyqxmd.com/read/28640006/poor-gait-performance-is-influenced-with-decreased-vestibulo-ocular-reflex-in-poststroke-patients
#7
Tsubasa Mitsutake, Maiko Sakamoto, Kozo Ueta, Shinichiro Oka, Etsuo Horikawa
The vestibulo-ocular reflex (VOR) exerts a significant influence on gait performance. Therefore, a decrease in VOR function could worsen gait impairments in patients with poststroke hemiparesis. The effects of decreased VOR function on gait performance could be further exacerbated by aging-related physical weakness and impaired motor function of the hemiparetic lower limb. The aim of our study was to evaluate the possible synergistic effect of aging and impairment in lower extremity function and the VOR on walking ability of poststroke hemiplegic patients...
August 16, 2017: Neuroreport
https://www.readbyqxmd.com/read/28638085/differential-regulations-of-vestibulo-ocular-reflex-and-optokinetic-response-by-%C3%AE-and-%C3%AE-2-adrenergic-receptors-in-the-cerebellar-flocculus
#8
Ryo Wakita, Soshi Tanabe, Kazunari Tabei, Asako Funaki, Takuma Inoshita, Tomoo Hirano
Norepinephrine modulates synaptic plasticity in various brain regions and is implicated in memory formation, consolidation and retrieval. The cerebellum is involved in motor learning, and adaptations of the vestibulo-ocular reflex (VOR) and optokinetic response (OKR) have been studied as models of cerebellum-dependent motor learning. Previous studies showed the involvement of adrenergic systems in the regulation of VOR, OKR and cerebellar synaptic functions. Here, we show differential contributions of β- and α2-adrenergic receptors in the mouse cerebellar flocculus to VOR and OKR control...
June 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28604633/fluoroalkyl-amino-reagents-fars-a-general-approach-towards-the-synthesis-of-heterocyclic-compounds-bearing-emergent-fluorinated-substituents
#9
REVIEW
Bruno Commare, Etienne Schmitt, Fallia Aribi, Armen Panossian, Jean-Pierre Vors, Sergiy Pazenok, Frédéric R Leroux
Fluorinated heterocycles are important building blocks in pharmaceutical, agrochemical and material sciences. Therefore, organofluorine chemistry has witnessed high interest in the development of efficient methods for the introduction of emergent fluorinated substituents (EFS) onto heterocycles. In this context, fluoroalkyl amino reagents (FARs)-a class of chemicals that was slightly forgotten over the last decades-has emerged again recently and proved to be a powerful tool for the introduction of various fluorinated groups onto (hetero)aromatic derivatives...
June 12, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28593438/eye-movements-are-correctly-timed-during-walking-despite-bilateral-vestibular-hypofunction
#10
Eric R Anson, Tim Kiemel, John P Carey, John J Jeka
Individuals with bilateral vestibular hypofunction (BVH) often report symptoms of oscillopsia (the perception that the world is bouncing or unstable) during walking. Efference copy/proprioception contributes to locomotion gaze stability in animals, sometimes inhibiting the vestibulo-ocular reflex (VOR). Gaze stability requires both adequate eye velocity and appropriate timing of eye movements. It is unknown whether eye velocity (VOR gain), timing (phase), or both are impaired for individuals with BVH during walking...
June 7, 2017: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/28586131/mechanisms-underlying-vestibulo-cerebellar-motor-learning-in-mice-depend-on-movement-direction
#11
Kai Voges, Bin Wu, Laura Post, Martijn Schonewille, Chris I De Zeeuw
Compensatory eye movements elicited by head rotation, also known as vestibulo-ocular reflex (VOR), can be adapted with the use of visual feedback. The cerebellum is essential for this type of movement adaptation, but its neuronal correlates remain to be elucidated. Here we show that the direction of vestibular input determines the magnitude of eye movement adaptation induced by mismatched visual input in mice, with larger changes during contraversive head rotation. Moreover, the location of the neural correlate of this changed behaviour depends on the type of paradigm...
June 6, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28581875/microencapsulation-by-spray-drying-of-lemon-essential-oil-evaluation-of-mixtures-of-mesquite-gum-nopal-mucilage-as-new-wall-materials
#12
Stefani Cortés-Camargo, Julian Cruz-Olivares, Blanca E Barragán-Huerta, Octavio Dublán-García, Angélica Román-Guerrero, César Pérez-Alonso
Mesquite gum (MG) and nopal mucilage (NM) mixtures were used for microencapsulation of lemon essential oil (LEO) by spray drying. Emulsions of MG, NM and MG-NM mixtures (25-75, 50-50, 75-25) were evaluated according to the droplet size (1.49-9.16 μm), viscosity and zeta potential (-16.07 to -20.13 mV), and microcapsules were characterised in particle size (11.9-44.4 μm), morphology, volatile oil retention (VOR) (45.9-74.4%), encapsulation efficiency (EE) (70.9-90.6%), oxidative stability and thermal analysis...
June 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28567027/transient-vestibulopathy-in-wallenberg-s-syndrome-pathologic-analysis
#13
Jorge C Kattah, Ali S Saber Tehrani, Sigrun Roeber, Meena Gujrati, Sarah E Bach, David E Newman Toker, Ari M Blitz, Anja K E Horn
OBJECTIVE: To report an unusual lateral medullary stroke (LMS) associated with transient unidirectional horizontal, nystagmus, and decreased horizontal vestibulo-ocular reflex (h-VOR) gain that mimicked a peripheral vestibulopathy. MRI suggested involvement of caudal medial vestibular nucleus (MVN); however, the rapid resolution of the nystagmus and improved h-VOR gain favored transient ischemia without infarction. Decreased h-VOR gain is expected with peripheral vestibular lesions within the labyrinth or superior vestibular nerve; less frequently lateral pontine strokes involving the vestibular root entry, the vestibular fascicle, or neurons within the MVN may be responsible...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28562425/rotational-and-collic-vestibular-evoked-myogenic-potential-testing-in-normal-developing-children-and-children-with-combined-attention-deficit-hyperactivity-disorder
#14
Younes Lotfi, Nima Rezazadeh, Abdollah Moossavi, Hojjat Allah Haghgoo, Reza Rostami, Enayatollah Bakhshi, Faride Badfar, Sedigheh Farokhi Moghadam, Vahid Sadeghi-Firoozabadi, Yousef Khodabandelou
OBJECTIVES: Vestibular dysfunction in childhood can have a major effect on a child's developmental process. Balance function has been reported to be poorer in children with attention deficit and hyperactivity disorder (ADHD) than in their typically developing peers. Due to contradictory available evidence and the paucity of research on vestibular function specifically in children with combined ADHD (cADHD), we designed this aged-matched study to assess vestibular function in children with cADHD...
May 26, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28560493/three-dimensional-analysis-of-linear-vestibulo-ocular-reflex-in-humans-during-eccentric-rotation-while-facing-downwards
#15
Takao Imai, Yasumitsu Takimoto, Noriaki Takeda, Tomoko Okumura, Hidenori Inohara
When participants undergo eccentric rotation (ER), i.e., they are rotated while displaced from the axis of rotation, they undergo both rotational stimulation and linear acceleration, which induces both the angular vestibulo-ocular reflex (aVOR) and linear VOR (lVOR). During ER, the lVOR induced by tangential linear acceleration enhances the eye movement induced by aVOR. In this study, we attempted to measure aVOR and lVOR separately, while participants underwent ER while facing the ground in a dark room. We analyzed three-dimensional eye movements using a video-oculography system...
August 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28545546/emulsifying-dietary-fat-modulates-postprandial-endotoxemia-associated-with-chylomicronemia-in-obese-men-a-pilot-randomized-crossover-study
#16
Cécile Vors, Jocelyne Drai, Gaëlle Pineau, Martine Laville, Hubert Vidal, Fabienne Laugerette, Marie-Caroline Michalski
BACKGROUND: Postprandial hyperlipemia is recognized as a major cardio-metabolic risk factor, recently linked to the co-absorption of pro-inflammatory lipopolysaccharides with dietary lipids. This causes endotoxemia that is involved in the pathophysiology of obesity and insulin resistance, but to date the impact of food formulation is unknown. We tested a novel concept that endotoxin absorption can be modulated by fat emulsified structure in the meal, and potentially differently in obese vs...
May 25, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28515977/establishing-normative-change-values-in-visual-acuity-loss-during-the-dynamic-visual-acuity-test
#17
Chris Marquez, Monica Lininger, Scot Raab
BACKGROUND: Baseline visual acuity (VA) loss from static to dynamic head conditions assessed using the Dynamic Visual Acuity Testing (DVAT) have not been established in NCAA football players. DVAT assesses the Vestibulo-Ocular Reflex (VOR) which is measured in Logarithm of the Minimum Angle of Resolution (logMAR). Decreased VA beyond baseline measures may detect VOR impairment and impact treatment protocols and assist in return to play decisions post-concussion. HYPOTHESIS/PURPOSE: To establish normative VA mean scores during a static head posture as well as dynamically during the DVAT with a head speed of 150 deg/s in the pitch (vertical) and yaw (horizontal) planes rotating 20 degrees in each direction...
April 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28515020/supplementation-with-high-dose-docosahexaenoic-acid-increases-the-omega-3-index-more-than-high-dose-eicosapentaenoic-acid
#18
Janie Allaire, William S Harris, Cécile Vors, Amélie Charest, Johanne Marin, Kristina Harris Jackson, André Tchernof, Patrick Couture, Benoît Lamarche
BACKGROUND: Recent studies suggest that eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids have distinct effects on cardiometabolic risk factors. The Omega-3 Index (O3I), which is calculated as the proportion of EPA and DHA in red blood cell (RBC) membranes, has been inversely associated with the risk of coronary heart diseases and coronary mortality. The objective of this study was to compare the effects of EPA and DHA supplementation on the O3I in men and women with abdominal obesity and subclinical inflammation...
May 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28504830/exploring-planar-chiral-amino-siloxides
#19
Christopher Golz, Patricia Steffen, Carsten Strohmann
We present the synthesis, structure, and exemplary reactivity of siloxides with a planar-chiral N,N-dimethylaminomethylferrocene backbone. Several zinc complexes based on the racemic as well as the enantiomerically pure silanol were synthesized in the presence of water and crystallographically characterized, and their behavior in solution was examined. The chiral probe present in this system is a valuable tool for identifying the structure in solution. Furthermore, the zinc siloxides exhibit a comparable reactivity to the corresponding silanols...
May 15, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28504057/molecular-dynamic-modeling-of-cyp51b-in-complex-with-azole-inhibitors
#20
Pan Gao, Ying-Lu Cui, Rong-Ling Wu
Cytochrome P450 14α-sterol demethylase (CYP51), the key enzyme in sterol biosynthesis pathway, is an important target protein of cholesterol-lowering agents, antifungal drugs, and herbicides. CYP51B enzyme is one of the CYP51 family members. In the present study, we have chosen four representative inhibitors of CYP51B: diniconazole (Din), fluconazole (Flu), tebuconazole (Teb), and voriconazole (Vor), and launched to investigate the binding features of CYP51B-inhibitor and gating characteristics via molecular docking and molecular dynamics (MD) simulations...
May 28, 2017: Journal of Biomolecular Structure & Dynamics
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