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https://www.readbyqxmd.com/read/28937680/salinomycin-kills-cancer-stem-cells-by-sequestering-iron-in-lysosomes
#1
Trang Thi Mai, Ahmed Hamaï, Antje Hienzsch, Tatiana Cañeque, Sebastian Müller, Julien Wicinski, Olivier Cabaud, Christine Leroy, Amandine David, Verónica Acevedo, Akihide Ryo, Christophe Ginestier, Daniel Birnbaum, Emmanuelle Charafe-Jauffret, Patrice Codogno, Maryam Mehrpour, Raphaël Rodriguez
Cancer stem cells (CSCs) represent a subset of cells within tumours that exhibit self-renewal properties and the capacity to seed tumours. CSCs are typically refractory to conventional treatments and have been associated to metastasis and relapse. Salinomycin operates as a selective agent against CSCs through mechanisms that remain elusive. Here, we provide evidence that a synthetic derivative of salinomycin, which we named ironomycin (AM5), exhibits a more potent and selective activity against breast CSCs in vitro and in vivo, by accumulating and sequestering iron in lysosomes...
October 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28935720/suppression-of-store-operated-ca-2-entry-by-activation-of-gper-contribution-to-a-clamping-effect-on-endothelial-ca-2-signaling
#2
Lara E Terry, Mark VerMeer, Jennifer Giles, Quang-Kim Tran
The G Protein-coupled Estrogen Receptor 1 (GPER, formerly a.k.a. GPR30) modulates many Ca(2+)-dependent activities in endothelial cells. However, the underlying mechanisms are poorly understood. We recently reported that GPER acts to prolong cytoplasmic Ca(2+) signals by interacting with and promoting inhibitory phosphorylation of the plasma membrane Ca(2+)-ATPase. In this study, we examined the role of GPER activation in modulating store-operated Ca(2+) entry (SOCE) via effects on the Stromal Interaction Molecule 1 (STIM1)...
September 21, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28934793/acupuncture-for-myofascial-pain-syndrome-a-network-meta-analysis-of-33-randomized-controlled-trials
#3
Xiuxia Li, Rong Wang, Xin Xing, Xiue Shi, Jinhui Tian, Jun Zhang, Long Ge, Jingyun Zhang, Lun Li, Kehu Yang
BACKGROUND: Acupuncture techniques are commonly used as initial treatments for myofascial pain syndrome. OBJECTIVE: This study aimed to assess and compare the efficacy and safety of different techniques of acupuncture for myofascial pain syndrome. STUDY DESIGN: Network meta-analysis. SETTING: All selected studies were randomized controlled trials (RCTs). METHODS: The Cochrane Central Register of Controlled Trials, PubMed, Web of Science, EMBASE, and Chinese Biomedical Literature Database were searched from their inceptions to February 2016...
September 2017: Pain Physician
https://www.readbyqxmd.com/read/28934634/comparison-of-shoulder-strength-in-males-with-and-without-myofascial-trigger-points-in-the-upper-trapezius
#4
H A Kim, U J Hwang, S H Jung, S H Ahn, J H Kim, O Y Kwon
BACKGROUND: This study was conducted in order to compare the strength of scapular elevator and shoulder abductor with and without restricted scapular elevation between male subjects with and without myofascial trigger points in the upper trapezius. METHODS: In total, 15 male subjects with myofascial trigger points, and 15age- and weight-matched male subjects without myofascial trigger points in the upper trapezius. Each subject was measured in the strength of maximum isometric scapular elevation and shoulder abduction with and without restricted scapular elevation...
September 6, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28933900/construction-and-updating-of-event-models-in-auditory-event-processing
#5
Markus Huff, Annika E Maurer, Irina Brich, Anne Pagenkopf, Florian Wickelmaier, Frank Papenmeier
Humans segment the continuous stream of sensory information into distinct events at points of change. Between 2 events, humans perceive an event boundary. Present theories propose changes in the sensory information to trigger updating processes of the present event model. Increased encoding effort finally leads to a memory benefit at event boundaries. Evidence from reading time studies (increased reading times with increasing amount of change) suggest that updating of event models is incremental. We present results from 5 experiments that studied event processing (including memory formation processes and reading times) using an audio drama as well as a transcript thereof as stimulus material...
September 21, 2017: Journal of Experimental Psychology. Learning, Memory, and Cognition
https://www.readbyqxmd.com/read/28931976/effectiveness-of-dry-needling-versus-a-classical-physiotherapy-program-in-patients-with-chronic-low-back-pain-a-single-blind-randomized-controlled-trial
#6
Emİne Handan Tüzün, Sıla Gıldır, Ender Angın, Büşra Hande Tecer, Kezban Öztürk Dana, Mehtap Malkoç
[Purpose] We compared the effectiveness of dry needling with a classical physiotherapy program in patients with chronic low-back pain caused by lumbar disc hernia (LHNP). [Subjects and Methods] In total, 34 subjects were allocated randomly to the study (n=18) and control groups (n=16). In the study group, dry needling was applied using acupuncture needles. The control group performed a home exercise program in addition to hot pack, TENS, and ultrasound applications. Pain was assessed with the short form of the McGill Pain Questionnaire...
September 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28930598/enzymatically-modified-ldl-atherosclerosis-and-beyond-paving-the-way-to-acceptance
#7
Michael Torzewski
The eLDL (enzymatically modified LDL) hypothesis proposes that modification of LDL during atherogenesis occurs through the action of ubiquitous hydrolytic enzymes. eLDL is recognized by multiple macrophage receptors. Following cellular uptake, eLDL triggers atherosclerotic lesion initiation with reversion or progression depending on the balance between cholesterol insudation and depletion. The effects of eLDL on cellular constituents of the atherosclerotic lesion comprise both pro- and anti-inflammatory mechanisms...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28929742/beta-hemolytic-bacteria-selectively-trigger-liposome-lysis-enabling-rapid-and-accurate-pathogen-detection
#8
Rongji Sum, Muthukaruppan Swaminathan, Sahil Kumar Rastogi, Obdulio Piloto, Ian Cheong
For more than a century, blood agar plates have been the only test for beta-hemolysis. Although blood agar cultures are highly predictive for bacterial pathogens, they are too slow to yield actionable information. Here, we show that beta-hemolytic pathogens are able to lyse and release fluorophores encapsulated in sterically stabilized liposomes whereas alpha and gamma-hemolytic bacteria have no effect. By analyzing fluorescence kinetics, beta-hemolytic colonies cultured on agar could be distinguished in real time with 100% accuracy within 6 h...
September 20, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28929347/an-ethical-assessment-model-for-digital-disease-detection-technologies
#9
Kerstin Denecke
Digital epidemiology, also referred to as digital disease detection (DDD), successfully provided methods and strategies for using information technology to support infectious disease monitoring and surveillance or understand attitudes and concerns about infectious diseases. However, Internet-based research and social media usage in epidemiology and healthcare pose new technical, functional and formal challenges. The focus of this paper is on the ethical issues to be considered when integrating digital epidemiology with existing practices...
September 20, 2017: Life Sciences, Society and Policy
https://www.readbyqxmd.com/read/28927522/significance-and-nature-of-bystander-responses-induced-by-various-agents
#10
REVIEW
Neha Verma, Ashu Bhan Tiku
Bystander effects in a biological system are the responses shown by non-targeted neighbouring cells/tissues/organisms. These responses are triggered by factors released from targeted cells when exposed to a stress inducing agent. The biological response to stress inducing agents is complex, owing to the diversity of mechanisms and pathways activated in directly targeted and bystander cells. These responses are highly variable and can be either beneficial or hazardous depending on the cell lines tested, dose of agent used, experimental end points and time course selected...
July 2017: Mutation Research
https://www.readbyqxmd.com/read/28926414/exploration-of-quantitative-sensory-testing-in-latent-trigger-points-and-referred-pain-areas
#11
Silvia Ambite-Quesada, José L Arías-Buría, Carol A Courtney, Lars Arendt-Nielsen, César Fernández-de-Las-Peñas
OBJECTIVE: To investigate somato-sensory nerve fibre function by applying different quantitative sensory testing including thermal, mechanical and vibration thresholds over latent trigger points (TrP) and in its associated referred pain area. METHODS: A total of 20 subjects with unilateral latent TrPs in the extensor carpi radialis brevis were included. Warmth detection threshold (WDT), cold detection threshold CDT) and heat/cold pain thresholds (HPT, CPT), mechanical detection (MDT) and pain (MPT) thresholds, vibration threshold (VT), and pressure pain thresholds (PPT) were blinded assessed over the TrP, in the referred pain area, and in the respective contra-lateral mirror areas...
September 15, 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28924479/marked-hyperandrogenicity-in-a-60-year-old-woman
#12
Khaled Aljenaee, Sulaiman Ali, Seong Keat Cheah, Owen MacEneaney, Niall Mulligan, Neil Hickey, Tommy Kyaw Tun, Seamus Sreenan, John H McDermott
Markedly elevated androgen levels can lead to clinical virilization in females. Clinical features of virilization in a female patient, in association with biochemical hyperandrogenism, should prompt a search for an androgen-producing tumor, especially of ovarian or adrenal origin. We herein report the case of a 60-year-old woman of Pakistani origin who presented with the incidental finding of male pattern baldness and hirsutism. Her serum testosterone level was markedly elevated at 21 nmol/L (normal range: 0...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28923396/smac-mimetics-and-type-ii-interferon-synergistically-induce-necroptosis-in-various-cancer-cell-lines
#13
Michael John Cekay, Stefanie Roesler, Tanja Frank, Anne-Kathrin Knuth, Ines Eckhardt, Simone Fulda
Since cancer cells often evade apoptosis, induction of necroptosis as another mode of programmed cell death is considered as a promising therapeutic alternative. Here, we identify a novel synergistic interaction of Smac mimetics that antagonize x-linked Inhibitor of Apoptosis (XIAP), cellular Inhibitor of Apoptosis (cIAP) 1 and 2 with interferon (IFN)γ to induce necroptosis in apoptosis-resistant cancer cells in which caspase activation is blocked. The synergistic is confirmed by calculation of combination indices (CIs) and found in both solid and hematological cancer cell lines as well as for different Smac mimetics (i...
September 18, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28923050/dry-needling-in-a-manual-physiotherapy-and-therapeutic-exercise-protocol-for-patients-with-chronic-mechanical-shoulder-pain-of-unspecific-origin-a-protocol-for-a-randomized-control-trial
#14
Emma Tejera-Falcón, Nuria Del Carmen Toledo-Martel, Francisco Manuel Sosa-Medina, Fátima Santana-González, Miriam Del Pino Quintana-de la Fe, Tomás Gallego-Izquierdo, Daniel Pecos-Martín
BACKGROUND: Shoulder pain of musculoskeletal origin is the main cause of upper limb pain of non-traumatic origin. Despite being one of the most common reasons for consultation, there is no established protocol for treatment due to the complexity of its etiology. However, it has been shown that the presence of myofascial trigger points on the shoulder muscles is a common condition associated with patients suffering from shoulder pain. This protocol has been created which describes the design of a randomized controlled trial to evaluate the effectiveness of the inclusion of dry needling (DN) within a protocol of manual physiotherapy and therapeutic exercise in the treatment of chronic shoulder pain of unspecific origin...
September 18, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28922393/a-set-of-nutrient-limitations-trigger-yeast-cell-death-in-a-nitrogen-dependent-manner-during-wine-alcoholic-fermentation
#15
Camille Duc, Martine Pradal, Isabelle Sanchez, Jessica Noble, Catherine Tesnière, Bruno Blondin
Yeast cell death can occur during wine alcoholic fermentation. It is generally considered to result from ethanol stress that impacts membrane integrity. This cell death mainly occurs when grape musts processing reduces lipid availability, resulting in weaker membrane resistance to ethanol. However the mechanisms underlying cell death in these conditions remain unclear. We examined cell death occurrence considering yeast cells ability to elicit an appropriate response to a given nutrient limitation and thus survive starvation...
2017: PloS One
https://www.readbyqxmd.com/read/28920423/self-organization-of-ions-at-the-interface-between-graphene-and-ionic-liquid-deme-tfsi
#16
Guangliang Hu, Gaind P Pandey, Qingfeng Liu, Radhika S Anaredy, Chunrui Ma, Ming Liu, Jun Li, Scott K Shaw, Judy Z Wu
Electrochemical effects manifest as nonlinear responses to an applied electric field in electrochemical devices, and are linked intimately to the molecular orientation of ions in the electric double layer (EDL). Herein, we probe the origin of the electrochemical effect using a double-gate graphene field effect transistor (GFET) of ionic liquid N,N-diethyl-N-(2-methoxyethyl)-N-methylammonium bis-(trifluoromethylsulfonyl)-imide (DEME-TFSI) top-gate, paired with a ferroelectric Pb0.92La0.08Zr0.52Ti0.48O3 (PLZT) back-gate of compatible gating efficiency...
September 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28916540/massive-reshaping-of-genome-nuclear-lamina-interactions-during-oncogene-induced-senescence
#17
Christelle Lenain, Carolyn A de Graaf, Ludo Pagie, Nils L Visser, Marcel de Haas, Sandra S de Vries, Daniel Peric-Hupkes, Bas van Steensel, Daniel S Peeper
Cellular senescence is a mechanism that virtually irreversibly suppresses the proliferative capacity of cells in response to various stress signals. This includes the expression of activated oncogenes, which causes Oncogene-Induced Senescence (OIS). A body of evidence points to the involvement in OIS of chromatin reorganization, including the formation of senescence-associated heterochromatic foci (SAHF). The nuclear lamina (NL) is an important contributor to genome organization and has been implicated in cellular senescence and organismal aging...
September 15, 2017: Genome Research
https://www.readbyqxmd.com/read/28916249/diagnostic-errors-impact-of-an-educational-intervention-on-pediatric-primary-care
#18
Julianne Nemes Walsh, Margaret Knight, A James Lee
INTRODUCTION: The purpose of our study was to determine the impact of an educational program on a provider's knowledge related to diagnostic errors and diagnostic reasoning strategies. METHODS: A quasi-experimental interventional study with a multimedia approach, case study discussion, and trigger-generated medical record review at two time points was conducted. Measurement tools included a test developed by the National Patient Safety Foundation, Reducing Diagnostic Errors: Strategies for Solutions Quiz, additional diagnostic reasoning questions, and a trigger-generated process to analyze medical records...
September 12, 2017: Journal of Pediatric Health Care
https://www.readbyqxmd.com/read/28913358/central-modulation-of-neuroinflammation-by-neuropeptides-and-energy-sensing-hormones-during-obesity
#19
REVIEW
Roger Maldonado-Ruiz, Lizeth Fuentes-Mera, Alberto Camacho
Central nervous system (CNS) senses energy homeostasis by integrating both peripheral and autonomic signals and responding to them by neurotransmitters and neuropeptides release. Although it is previously considered an immunologically privileged organ, we now know that this is not so. Cells belonging to the immune system, such as B and T lymphocytes, can be recruited into the CNS to face damage or infection, in addition to possessing resident immunological cells, called microglia. In this way, positive energy balance during obesity promotes an inflammatory state in the CNS...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28913345/a-yeast-model-for-the-mechanism-of-the-epstein-barr-virus-immune-evasion-identifies-a-new-therapeutic-target-to-interfere-with-the-virus-stealthiness
#20
COMMENT
María José Lista, Rodrigo Prado Martins, Gaelle Angrand, Alicia Quillévéré, Chrysoula Daskalogianni, Cécile Voisset, Marie-Paule Teulade-Fichou, Robin Fåhraeus, Marc Blondel
The oncogenic Epstein-Barr virus (EBV) evades the immune system but has an Achilles heel: its genome maintenance protein EBNA1. Indeed, EBNA1 is essential for viral genome replication and maintenance but also highly antigenic. Hence, EBV evolved a system in which the glycine-alanine repeat (GAr) of EBNA1 limits the translation of its own mRNA at a minimal level to ensure its essential function thereby, at the same time, minimizing immune recognition. Defining intervention points where to interfere with EBNA1 immune evasion is an important step to trigger an immune response against EBV-carrying cancers...
August 31, 2017: Microbial Cell
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