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https://www.readbyqxmd.com/read/28222492/discovery-of-mieap-regulated-mitochondrial-quality-control-as-a-new-function-of-tumor-suppressor-p53
#1
REVIEW
Yasuyuki Nakamura, Hirofumi Arakawa
The tumor suppressor p53 gene is frequently mutated in human cancers, and the p53 protein suppresses cancer. However, the mechanism behind the p53-mediated tumor suppression is still unclear. Recently, Mieap (the mitochondria-eating protein) was identified as a p53-inducible protein. Mieap induces the accumulation of lysosomal proteins within mitochondria (MALM: Mieap-induced accumulation of lysosome-like organelles within mitochondria) in response to mitochondrial damage, and eliminates the oxidized mitochondrial proteins to repair unhealthy mitochondria...
February 21, 2017: Cancer Science
https://www.readbyqxmd.com/read/28222242/obesity-and-melanoma-could-fat-be-fueling-malignancy
#2
REVIEW
Emily Clement, Ikrame Lazar, Catherine Muller, Laurence Nieto
Over the last decade, it has become increasingly clear that adipose tissue, and particularly adipocytes, contribute to tumor progression. Obesity, an ever-increasing worldwide phenomenon, exacerbates this effect. The influence of obesity on melanoma remains poorly studied, although recent data does underline an association between the two diseases in both humans and murine models. Herein, we review the impact of obesity on melanoma incidence and progression and discuss the underlying mechanisms known to be involved...
February 21, 2017: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/28222237/extreme-genetic-structure-in-a-social-bird-species-despite-high-dispersal-capacity
#3
Francisco Morinha, José A Dávila, Estela Bastos, João A Cabral, Óscar Frías, José L González, Paulo Travassos, Diogo Carvalho, Borja Milá, Guillermo Blanco
Social barriers have been shown to reduce gene flow and contribute to genetic structure among populations in species with high cognitive capacity and complex societies, such as cetaceans, apes and humans. In birds, high dispersal capacity is thought to prevent population divergence unless major geographic or habitat barriers induce isolation patterns by dispersal, colonization or adaptation limitation. We report that Iberian populations of the red-billed chough, a social, gregarious corvid with high dispersal capacity, show a striking degree of genetic structure composed of at least 15 distinct genetic units...
February 21, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28222213/rab7a-regulates-tau-secretion
#4
Lilia Rodriguez, Nguyen-Vi Mohamed, Alexandre Desjardins, Roger Lippé, Edward Fon, Nicole Leclerc
The axonal microtubule-associated protein TAU, involved in Alzheimer's disease (AD), can be found in the extracellular space where it could be taken up by neurons, an event that is believed to contribute to the propagation of tau pathology in the brain. Since the small GTPase Rab7A is involved in the trafficking of endosomes, autophagosomes and lysosomes, and RAB7A gene expression and protein levels are upregulated in AD patients, we tested the hypothesis that Rab7A was involved in Tau secretion. We previously reported that both primary cortical neurons and HeLa cells overexpressing human TAU can release Tau...
February 21, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28222142/evaluation-of-18-f-fluoro-2-deoxyglucose-fdg-positron-emission-tomography-computed-tomography-pet-ct-as-a-staging-and-monitoring-tool-for-dogs-with-stage-2-splenic-hemangiosarcoma-a-pilot-study
#5
Antonella Borgatti, Amber L Winter, Kathleen Stuebner, Ruth Scott, Christopher P Ober, Kari L Anderson, Daniel A Feeney, Daniel A Vallera, Joseph S Koopmeiners, Jaime F Modiano, Jerry Froelich
Positron Emission Tomography-Computed Tomography (PET-CT) is routinely used for staging and monitoring of human cancer patients and is becoming increasingly available in veterinary medicine. In this study, 18-fluorodeoxyglucose (18FDG)-PET-CT was used in dogs with naturally occurring splenic hemangiosarcoma (HSA) to assess its utility as a staging and monitoring modality as compared to standard radiography and ultrasonography. Nine dogs with stage-2 HSA underwent 18FDG-PET-CT following splenectomy and prior to commencement of chemotherapy...
2017: PloS One
https://www.readbyqxmd.com/read/28221718/quantitative-analysis-of-shigella-flexneri-protein-expression-under-acid-stress
#6
Kaiwen Yu, Zhen Wang, Fan Zhou, Jiezhang Jiang, Yanhua Liu, Mo Hu, Xiaoyun Liu
As an important foodborne pathogen, Shigella flexneri can cause widespread enteric infection with bacteria as few as hundreds. This is, at least in part, attributed to its robust anti-acid strategies because passage through the highly acidic human digestive tract is a prerequisite for successful bacterial infection. Nevertheless, our understanding of these mechanisms and the impact of acid stress on Shigella protein expression still remains largely incomplete. Herein we conducted a proteomic survey of Shigella spp...
February 21, 2017: Proteomics
https://www.readbyqxmd.com/read/28220938/performance-of-the-new-biomonitor-2-af-insertable-cardiac-monitoring-system-can-better-be-worse
#7
Philipp Lacour, Phi Long Dang, Martin Huemer, Abdul Shokor Parwani, Philipp Attanasio, Burkert Pieske, Leif-Hendrik Boldt, Wilhelm Haverkamp, Florian Blaschke
BACKGROUND: Implantable loop recorders (ILR) are valuable tools for the investigation of patients with suspected arrhythmias. The BioMonitor 2-AF is a novel insertable ILR with enhanced atrial fibrillation (AF) detection algorithm and remote monitoring capability. OBJECTIVE: The objective of this first-in-human study with the BioMonitor 2-AF was to analyze course of P-wave sensing performance and R-wave amplitude, prevalence of false and correctly sensed and classified episodes, and effectiveness of remote monitoring...
February 21, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28220625/predicting-gene-expression-in-massively-parallel-reporter-assays-a-comparative-study
#8
Anat Kreimer, Haoyang Zeng, Matthew D Edwards, Yuchun Guo, Kevin Tian, Sunyoung Shin, Rene Welch, Michael Wainberg, Rahul Mohan, Nicholas A Sinnott-Armstrong, Yue Li, Gökcen Eraslan, Talal Bin Amin, Jonathan Goke, Nikola S Mueller, Manolis Kellis, Anshul Kundaje, Michael A Beer, Sunduz Keles, David K Gifford, Nir Yosef
In many human diseases, associated genetic changes tend to occur within non-coding regions, whose effect might be related to transcriptional control. A central goal in human genetics is to understand the function of such non-coding regions: Given a region that is statistically associated with changes in gene expression (expression Quantitative Trait Locus; eQTL), does it in fact play a regulatory role? And if so, how is this role "coded" in its sequence? These questions were the subject of the Critical Assessment of Genome Interpretation eQTL challenge...
February 21, 2017: Human Mutation
https://www.readbyqxmd.com/read/28220542/the-gut-microbiome-in-human-neurological-disease-a-review
#9
REVIEW
Helen Tremlett, Kylynda C Bauer, Silke Appel-Cresswell, Brett B Finlay, Emmanuelle Waubant
Almost half the cells and 1% of the unique genes found in our bodies are human, the rest are from microbes; predominantly bacteria, archaea, fungi, and viruses. These microorganisms collectively form the human microbiota, with most colonizing the gut. Recent technological advances, open access data-libraries, and application of high throughput sequencing have allowed these microbes to be identified and their contribution to neurological health examined. Emerging evidence links perturbations in the gut microbiota to neurological disease, including disease risk, activity, and progression...
February 21, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28220523/inflammation-is-independent-of-steatosis-in-a-murine-model-of-steatohepatitis
#10
Wei Wang, Ming-Jiang Xu, Yan Cai, Zhou Zhou, Haixia Cao, Partha Mukhopadhyay, Pal Pacher, Shusen Zheng, Frank J Gonzalez, Bin Gao
Obesity and alcohol consumption synergistically promote steatohepatitis, and neutrophil infiltration is believed to be associated with steatosis. However, the underlying mechanisms remain obscure. Peroxisome proliferator-activated receptor-gamma (PPARγ) plays a complex role in lipid metabolism and inflammation, therefore, the purpose of this study was to dissect its role in regulating steatosis and neutrophil infiltration in a clinically relevant mouse steatohepatitis model of 3-month high-fat diet (HFD) feeding plus a binge of ethanol (HFD -plus-binge ethanol)...
February 21, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28220464/perspectives-and-challenges-of-pluripotent-stem-cells-in-cardiac-arrhythmia-research
#11
REVIEW
Alexander Goedel, Ilaria My, Daniel Sinnecker, Alessandra Moretti
PURPOSE OF REVIEW: The promises of human-induced pluripotent stem cells (hiPSCs) for modeling arrhythmogenic disease, but also for drug discovery and toxicity tests, are straightforward and exciting. However, the full potential of this new technology has not been fully realized yet. The purpose of this review is to provide an overview of the state-of-the-art research in arrhythmogenic disease modeling and drug discovery and an outlook of what can be expected from the second decade of hiPSC-based arrhythmia research...
March 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28219776/deactivation-in-the-posterior-mid-cingulate-cortex-reflects-perceptual-transitions-during-binocular-rivalry-evidence-from-simultaneous-eeg-fmri
#12
Abhrajeet Roy, Keith Jamison, Sheng He, Steve Engel, Bin He
Binocular rivalry is a phenomenon in which perception spontaneously shifts between two different images that are dichoptically presented to the viewer. By elucidating the cortical networks responsible for these stochastic fluctuations in perception, we can potentially learn much about the neural correlates of visual awareness. We obtained concurrent EEG-fMRI data for a group of 20 healthy human subjects during the continuous presentation of dichoptic visual stimuli. The two eyes' images were tagged with different temporal frequencies so that eye specific steady-state visual evoked potential (SSVEP) signals could be extracted from the EEG data for direct comparison with changes in fMRI BOLD activity associated with binocular rivalry...
February 17, 2017: NeuroImage
https://www.readbyqxmd.com/read/28219374/the-right-to-health-of-non-nationals-and-displaced-persons-in-the-sustainable-development-goals-era-challenges-for-equity-in-universal-health-care
#13
EDITORIAL
Claire E Brolan, Lisa Forman, Stéphanie Dagron, Rachel Hammonds, Attiya Waris, Lyla Latif, Ana Lorena Ruano
INTRODUCTION: Under the Millennium Development Goals (MDGs), United Nations (UN) Member States reported progress on the targets toward their general citizenry. This focus repeatedly excluded marginalized ethnic and linguistic minorities, including people of refugee backgrounds and other vulnerable non-nationals that resided within a States' borders. The Sustainable Development Goals (SDGs) aim to be truly transformative by being made operational in all countries, and applied to all, nationals and non-nationals alike...
February 21, 2017: International Journal for Equity in Health
https://www.readbyqxmd.com/read/28219285/the-well-being-conception-of-health-and-the-conflation-problem
#14
Thana C de Campos
Human rights advocates often use inflated and thus underspecified terminologies when addressing the content of their claims. One example of such loose terminology is the term 'well-being', as currently employed in connection with a definition for the right to health. What I call the 'well-being conception of health' conflates the distinct ideas of basic and non-basic health needs, as well as those of individual autonomy and freedom. I call this the conflation problem. This paper argues for the need of an understanding of the right to health, nuanced enough to capture not only these distinct ideas, but also their moral relevance for the common good...
April 2016: New Bioethics: a Multidisciplinary Journal of Biotechnology and the Body
https://www.readbyqxmd.com/read/28219284/conscientious-objection-understanding-the-right-of-conscience-in-health-and-healthcare-practice
#15
Christina Lamb
In situations of moral gravitas, healthcare professionals are largely protected in the Western world to invoke their right to conscientiously object to providing care that conflicts with their personal, moral, and religious beliefs. However, making a conscientious objection needs to be predicated by an understanding of conscience, and knowledge of conscience is largely absent in definition as well as discourse surrounding conscientious objection in healthcare practice. Moreover, current definitions of health do not place emphasis on the ethical well-being of patients as well as care providers...
April 2016: New Bioethics: a Multidisciplinary Journal of Biotechnology and the Body
https://www.readbyqxmd.com/read/28219265/womb-rentals-and-baby-selling-does-surrogacy-undermine-the-human-dignity-and-rights-of-the-surrogate-mother-and-child
#16
Clara Watson
The question of surrogacy has dominated much of the European human rights agenda over the last two years, at the time writing, the Parliamentary Assembly of the Council of Europe hopes to adopt a resolution on surrogacy in the coming months. There is, however, danger in taking action at a supranational level to address the European 'surrogacy problem', without first honestly answering the question: does surrogacy undermine the human dignity and rights of the surrogate mother and child? This paper presents the case that surrogacy, by its nature, necessarily undermines the human dignity of both the woman and child born through such arrangements, and thus neither commercial nor altruistic surrogacy can ever be justified...
November 2016: New Bioethics: a Multidisciplinary Journal of Biotechnology and the Body
https://www.readbyqxmd.com/read/28218981/the-genetic-architecture-of-amino-acids-dissection-by-association-and-linkage-analysis-in-maize
#17
Min Deng, Dongqin Li, Jingyun Luo, Yingjie Xiao, Haijun Liu, Qingchun Pan, Xuehai Zhang, Minliang Jin, Mingchao Zhao, Jianbing Yan
Amino acids are both constituents of proteins, providing the essential nutrition for humans and animals, and signaling molecules regulating the growth and development of plants. Most cultivars of maize are deficient in essential amino acids such as lysine and tryptophan. Here, we measured the levels of 17 different total amino acids, and created 48 derived traits in mature kernels from a maize diversity inbred collection and three recombinant inbred line (RIL) populations. By GWAS, 247 and 281 significant loci were identified in two different environments, 5...
February 20, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28218770/the-prevalence-and-radiological-findings-of-pulmonary-embolism-in-hiv-positive-patients-referred-for-computed-tomography-pulmonary-angiography-in-the-western-cape-of-south-africa
#18
Raksha Ramlakhan, Savvas Andronikou, Ashmitha Rajkumar
AIM: To provide imaging data and report associations between human immunodeficiency virus (HIV), tuberculosis (TB) and pulmonary embolism (PE) in a South African population that underwent computed tomography pulmonary angiography (CTPA) for suspected PE. METHODS: A validated Qanadli severity scoring system for PE was used for 164 CTPA scans, and parenchymal, pleural and cardiovascular complications were reported. Serological confirmation of HIV testing and microbiological confirmation of TB were recorded...
February 15, 2017: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/28218648/expression-purification-and-monitoring-of-conformational-changes-of-hcb2-tmh67h8-in-different-membrane-mimetic-lipid-mixtures-using-circular-dichroism-and-nmr-techniques
#19
Elvis K Tiburu, Jianqin Zhuang, Heidimarie N A Fleischer, Patrick K Arthur, Gordon A Awandare
This work was intended to develop self-assembly lipids for incorporating G-protein coupled receptors (GPCRs) in order to improve the success rate for nuclear magnetic resonance spectroscopy (NMR) structural elucidation. We hereby report the expression and purification of uniformly (15)N-labeled human cannabinoid receptor-2 domain in insect cell media. The domain was refolded by screening several membrane mimetic environments. Different q ratios of isotropic bicelles were screened for solubilizing transmembrane helix 6, 7 and 8 (TMH67H8)...
February 17, 2017: Membranes
https://www.readbyqxmd.com/read/28218576/microbe-profile-escherichia-coli-o157%C3%A2-%C3%A2-h7-notorious-relative-of-the-microbiologist-s-workhorse
#20
David L Gally, Mark P Stevens
of enterohaemorrhagic Escherichia coli O157 pathogenesis using basic symbols. The right-hand illustration shows enterohaemorrhagic E. coli interactions with an epithelial cell.Escherichia coli O157 : H7 is a zoonotic diarrhoeal pathogen of worldwide importance. It belongs to a subset of Shiga toxin-producing E. coli that can form attaching and effacing lesions on intestinal epithelia via the action of a type 3 secretion system that injects bacterial effectors into enterocytes. Infections in humans often arise from contaminated food or direct environmental exposure and can involve life-threatening Shiga toxin-dependent sequelae...
January 2017: Microbiology
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