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https://www.readbyqxmd.com/read/28340510/the-diverse-family-of-mmpl-transporters-in-mycobacteria-from-regulation-to-antimicrobial-developments
#1
REVIEW
Albertus Viljoen, Violaine Dubois, Fabienne Girard-Misguich, Mickael Blaise, Jean-Louis Herrmann, Laurent Kremer
Mycobacterial genomes contain large sets of loci encoding membrane proteins that belong to a family of multidrug resistance pumps designated Resistance-Nodulation-Cell Division (RND) permeases. Mycobacterial membrane protein Large (MmpL) transporters represent a subclass of RND transporters known to participate in the export of lipid components across the cell envelope. These surface-exposed lipids with unusual structures play key roles in the physiology of mycobacteria and/or can act as virulence factors and immunomodulators...
March 24, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28340407/transmission-of-persistent-ionizing-radiation-induced-foci-through-cell-division-in-human-primary-cells
#2
Aurelie Vaurijoux, Pascale Voisin, Amelie Freneau, Joan Francesc Barquinero, Gaetan Gruel
Unrepaired DNA double-strand breaks (DSBs) induced by ionizing radiation are associated with lethal effects and genomic instability. After the initial breaks and chromatin destabilization, a set of post-translational modifications of histones occurs, including phosphorylation of serine 139 of histone H2AX (γH2AX), which leads to the formation of ionizing radiation-induced foci (IRIF). DSB repair results in the disappearance of most IRIF within hours after exposure, although some remain 24h after irradiation...
March 10, 2017: Mutation Research
https://www.readbyqxmd.com/read/28340352/human-epistatic-interaction-controls-il7r-splicing-and-increases-multiple-sclerosis-risk
#3
Gaddiel Galarza-Muñoz, Farren B S Briggs, Irina Evsyukova, Geraldine Schott-Lerner, Edward M Kennedy, Tinashe Nyanhete, Liuyang Wang, Laura Bergamaschi, Steven G Widen, Georgia D Tomaras, Dennis C Ko, Shelton S Bradrick, Lisa F Barcellos, Simon G Gregory, Mariano A Garcia-Blanco
Multiple sclerosis (MS) is an autoimmune disorder where T cells attack neurons in the central nervous system (CNS) leading to demyelination and neurological deficits. A driver of increased MS risk is the soluble form of the interleukin-7 receptor alpha chain gene (sIL7R) produced by alternative splicing of IL7R exon 6. Here, we identified the RNA helicase DDX39B as a potent activator of this exon and consequently a repressor of sIL7R, and we found strong genetic association of DDX39B with MS risk. Indeed, we showed that a genetic variant in the 5' UTR of DDX39B reduces translation of DDX39B mRNAs and increases MS risk...
March 23, 2017: Cell
https://www.readbyqxmd.com/read/28340345/snapshot-subcellular-mrna-localization
#4
Mohammad Mofatteh, Simon L Bullock
Many cells localize mRNAs to discrete locations in the cytoplasm. Coupled to local translation, this process affords precise spatial and temporal control of protein function. This SnapShot provides an overview of the key events in subcellular mRNA localization and highlights recent progress in understanding how cytoskeletal motors orchestrate mRNA trafficking.
March 23, 2017: Cell
https://www.readbyqxmd.com/read/28340329/a-close-up-view-of-codon-selection-in-eukaryotic-initiation
#5
Christoffer Lind, Mauricio Esguerra, Johan Åqvist
When given an option to choose among a set of alternatives and only one selection is right, one might stop and reflect over which one is best. However, the ribosome has no time to stop and make such reflections, proteins need to be produced and very fast. Eukaryotic translation initiation is an example of such a conundrum. Here, scanning for the correct codon match must be fast, efficient and accurate. We highlight our recent computational findings, which show how the initiation machinery manages to recognize one specific codon among many possible challengers, by fine-tuning the energetic landscape of base-pairing with the aid of the initiation factors eIF1 and eIF1A...
March 24, 2017: RNA Biology
https://www.readbyqxmd.com/read/28340202/validity-and-reproducibility-of-the-start-back-tool-dutch-version-in-patients-with-low-back-pain-in-primary-care-settings
#6
Jasper D Bier, Raymond W J G Ostelo, Miranda L van Hooff, Bart W Koes, Arianne P Verhagen
Objective: To translate, and to investigate the reliability and validity of the STarT Back screening tool (SBT) in the primary care setting among patients with non-specific low back pain (LBP). Methods: The SBT was formally translated in Dutch following a multistep approach for forward and backward translation. General practitioners and physiotherapists included patients with LBP. Patients completed a baseline a questionnaire and a follow-up at three days and three months...
March 9, 2017: Physical Therapy
https://www.readbyqxmd.com/read/28340182/novel-targets-and-future-strategies-for-acute-cardioprotection-position-paper-of-the-european-society-of-cardiology-working-group-on-cellular-biology-of-the-heart
#7
Derek J Hausenloy, David Garcia-Dorado, Hans Erik Bøtker, Sean M Davidson, James Downey, Felix B Engel, Robert Jennings, Sandrine Lecour, Jonathan Leor, Rosalinda Madonna, Michel Ovize, Cinzia Perrino, Fabrice Prunier, Rainer Schulz, Joost P G Sluijter, Linda W Van Laake, Jakob Vinten-Johansen, Derek M Yellon, Kirsti Ytrehus, Gerd Heusch, Péter Ferdinandy
Ischaemic heart disease and the heart failure that often results, remain the leading causes of death and disability in Europe and worldwide. As such, in order to prevent heart failure and improve clinical outcomes in patients presenting with an acute ST-segment elevation myocardial infarction and patients undergoing coronary artery bypass graft surgery, novel therapies are required to protect the heart against the detrimental effects of acute ischaemia/reperfusion injury. During the last three decades, a wide variety of ischaemic conditioning strategies and pharmacological treatments have been tested in the clinic - however, their translation from experimental to clinical studies for improving patient outcomes has been both challenging and disappointing...
March 17, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28340180/reliability-study-in-five-languages-of-the-translation-of-the-pain-observational-scale-algoplus
#8
Gisèle Pickering, Fiammetta Monacelli, Juan Manuel Pérez-Castejón Garrote, Hirondina Guarda, Luis Batalha, Stephen Gibson, Sumru Savas, Patrizio Odetti, Federica Gandolfo, Elisa Pastorino, Maria José Carrilho Mugeiro, Isabel Pereira Dias, Asli Kilavuz, Nicolas Macian, Bruno Pereira
Objective. : Acute pain is frequent and underestimated in older persons, especially when they suffer from cognitive impairment. Algoplus is an observational scale for acute pain evaluation, validated in French in older persons with communication disorders. We present the validation by an international expert team of the Algoplus scale in five languages: English, Spanish, Italian, Portuguese, and Turkish. Methods. : A total of 181 older consecutive patients were included in five countries (Spain, Australia, Italy, Portugal, and Turkey)...
March 13, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28340092/community-based-effectiveness-trials-as-a-means-to-disseminate-evidence-based-and-culturally-responsive-behavioral-health-interventions
#9
Flavio F Marsiglia, Patricia Dustman, Mary Harthun, Chelsea Coyne Ritland, Adriana Umaña-Taylor
This article adds to the existing knowledge about innovative community-based approaches used to reduce and eliminate behavioral health disparities. Special attention is given to culturally appropriate interventions that increase access to care and that improve the quality of behavioral health services across different geographic regions and communities. Effectiveness trials are presented as appropriate tools to translate existing efficacious interventions into real-world settings. This article describes how to transition from efficacy to effectiveness, including factors essential to consider from the perspectives of university-based research teams and community-based organizations (CBOs)...
March 14, 2017: Health & Social Work
https://www.readbyqxmd.com/read/28340031/one-year-clinical-correlates-of-etg-positive-urine-screening-in-alcohol-dependent-patients-a-survival-analysis
#10
Pablo Barrio, Silvia Mondon, Lídia Teixidor, Lluisa Ortega, Eduard Vieta, Antoni Gual
Aims: Little evidence exists supporting the efficacy of regular alcohol urine screening (RAUS) in the management of alcohol dependence, despite recent improvements in urine biomarkers. In this study, we aimed at investigating 1 year, differential clinical correlates between a positive and a negative baseline urine ethyl glucuronide (EtG) screening. Methods: Alcohol-dependent outpatients participating in a previous cross-sectional study where EtG and ethanol diagnostic performances were compared in a double blind design were included...
March 10, 2017: Alcohol and Alcoholism: International Journal of the Medical Council on Alcoholism
https://www.readbyqxmd.com/read/28339908/obesity-associated-cardiac-pathogenesis-in-broiler-breeder-hens-pathological-adaption-of-cardiac-hypertrophy1-2
#11
C Y Chen, H Y Lin, Y W Chen, Y J Ko, Y J Liu, Y H Chen, R L Walzem, S E Chen
Broiler hens consuming feed to appetite (ad libitum; AL) show increased mortality. Feed restriction (R) typically improves reproductive performance and livability of hens. Rapidly growing broilers can exhibit increased mortality due to cardiac insufficiency but it is unknown whether the increased mortality of non-R broiler hens is also due to cardiac compromise. To assess cardiac growth and physiology in fully mature birds, 45-week-old hens were either continued on R rations or assigned to AL feeding for 7 or 21 days...
March 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339907/o-linked-%C3%AE-n-acetylglucosamine-modification-of-proteins-is-essential-for-foot-process-maturation-and-survival-in-podocytes
#12
Shinya Ono, Shinji Kume, Mako Yasuda-Yamahara, Kosuke Yamahara, Naoko Takeda, Masami Chin-Kanasaki, Hisazumi Araki, Osamu Sekine, Hideki Yokoi, Masashi Mukoyama, Takashi Uzu, Shin-Ichi Araki, Hiroshi Maegawa
Background.: O-linked β- N -acetylglucosamine modification O-GlcNAcylation) is a post-translational modification of intracellular proteins, serving as a nutrient sensor. Growing evidence has demonstrated its physiological and pathological importance in various mammalian tissues. This study examined the physiological role of O-GlcNAcylation in podocyte function and development. Methods.: O-GlcNAc transferase (Ogt) is a critical enzyme for O-GlcNAcylation and resides on the X chromosome...
February 27, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28339803/transcriptional-comparison-of-myogenesis-in-leghorn-and-low-score-normal-embryos
#13
J Griffin, N St-Pierre, M S Lilburn, M Wick
In a previous study, we reported on a quantitative transcriptomic method which confirmed the temporal transcription of developmental fast skeletal muscle myosin heavy chain (fsMyHC) embryonic isoforms in the embryonic Pectoralis major (PM) of the Single Comb White Leghorn (SCWL). The objective of the current study was to further investigate the transcriptional events underlying embryonic PM growth in the SCWL and a genotype exhibiting partial muscular dystrophy, the Low Score Normal (LSN). We hypothesized that within the SCWL and LSN embryos, there would be differences in the temporal transcription of the fsMyHC isoforms and other myogenic regulatory genes...
February 21, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339791/bridg-a-domain-information-model-for-translational-and-clinical-protocol-driven-research
#14
Lauren B Becnel, Smita Hastak, Wendy Ver Hoef, Robert P Milius, MaryAnn Slack, Diane Wold, Michael L Glickman, Boris Brodsky, Charles Jaffe, Rebecca Kush, Edward Helton
Background: It is critical to integrate and analyze data from biological, translational, and clinical studies with data from health systems; however, electronic artifacts are stored in thousands of disparate systems that are often unable to readily exchange data. Objective: To facilitate meaningful data exchange, a model that presents a common understanding of biomedical research concepts and their relationships with health care semantics is required. The Biomedical Research Integrated Domain Group (BRIDG) domain information model fulfills this need...
February 26, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/28339767/accounting-for-overdispersion-when-determining-primary-care-outliers-for-the-identification-of-chronic-kidney-disease-learning-from-the-national-chronic-kidney-disease-audit
#15
Lois G Kim, Ben Caplin, Faye Cleary, Sally A Hull, Kathryn Griffith, David C Wheeler, Dorothea Nitsch
Background.: Early diagnosis of chronic kidney disease (CKD) facilitates best management in primary care. Testing coverage of those at risk and translation into subsequent diagnostic coding will impact on observed CKD prevalence. Using initial data from 915 general practitioner (GP) practices taking part in a UK national audit, we seek to apply appropriate methods to identify outlying practices in terms of CKD stages 3-5 prevalence and diagnostic coding. Methods.: We estimate expected numbers of CKD stages 3-5 cases in each practice, adjusted for key practice characteristics, and further inflate the control limits to account for overdispersion related to unobserved factors (including unobserved risk factors for CKD, and between-practice differences in coding and testing)...
January 17, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28339742/topiramate-modulates-post-infarction-inflammation-primarily-by-targeting-monocytes-or-macrophages
#16
Zhaohui Wang, Shiyuan Huang, Yuling Sheng, Xu Peng, Hui Liu, Nan Jin, Jun Cai, Yanwen Shu, Ting Li, Ping Li, Cheng Fan, Xiaofan Hu, Wenyong Zhang, Rui Long, Ya You, Caihong Huang, Yi Song, Chunhua Xiang, Jue Wang, Yong Yang, Kun Liu
Aims: Monocytes/macrophages response plays a key role in post-infarction inflammation that contributes greatly to post-infarction ventricular remodeling and cardiac rupture. Therapeutic targeting of the GABAA receptor, which is enriched in monocytes/macrophages but not expressed in the myocardium, may be possible after myocardial infarction. Methods and results: After MI was induced by ligation of the coronary artery, C57BL/6 mice were intraperitoneally administered with one specific agonist or antagonist of the GABAA receptor (topiramate or bicuculline), in the setting of presence or depletion of monocytes/macrophages...
February 17, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28339700/a-clinical-perspective-on-the-2016-who-brain-tumor-classification-and-routine-molecular-diagnostics
#17
Martin J van den Bent, Michael Weller, Patrick Y Wen, Johan M Kros, Ken Aldape, Susan Chang
The 2007 World Health Organization (WHO) classification of brain tumors did not use molecular abnormalities as diagnostic criteria. Studies have shown that genotyping allows a better prognostic classification of diffuse glioma with improved treatment selection. This has resulted in a major revision of the WHO classification, which is now for adult diffuse glioma centered around isocitrate dehydrogenase (IDH) and 1p/19q diagnostics. This revised classification is reviewed with a focus on adult brain tumors, and includes a recommendation of genes of which routine testing is clinically useful...
February 21, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28339477/six-degree-of-freedom-knee-joint-kinematics-in-obese-individuals-with-knee-pain-during-gait
#18
Jing-Sheng Li, Tsung-Yuan Tsai, David T Felson, Guoan Li, Cara L Lewis
Knee joint pain is a common symptom in obese individuals and walking is often prescribed as part of management programs. Past studies in obese individuals have focused on standing alignment and kinematics in the sagittal and coronal planes. Investigation of 6 degree-of-freedom (6DOF) knee joint kinematics during standing and gait is important to thoroughly understand knee function in obese individuals with knee pain. This study aimed to investigate the 6DOF knee joint kinematics in standing and during gait in obese patients using a validated fluoroscopic imaging system...
2017: PloS One
https://www.readbyqxmd.com/read/28339469/non-invasive-evaluation-of-muscle-disease-in-the-canine-model-of-duchenne-muscular-dystrophy-by-electrical-impedance-myography
#19
Chady H Hakim, Alex Mijailovic, Thais B Lessa, Joan R Coates, Carmen Shin, Seward B Rutkove, Dongsheng Duan
Dystrophin-deficient dogs are by far the best available large animal models for Duchenne muscular dystrophy (DMD), the most common lethal childhood muscle degenerative disease. The use of the canine DMD model in basic disease mechanism research and translational studies will be greatly enhanced with the development of reliable outcome measures. Electrical impedance myography (EIM) is a non-invasive painless procedure that provides quantitative data relating to muscle composition and histology. EIM has been extensively used in neuromuscular disease research in both human patients and rodent models...
2017: PloS One
https://www.readbyqxmd.com/read/28339436/pain-related-limitations-in-daily-activities-following-thoracic-surgery-in-a-united-states-population
#20
Emine O Bayman, Richard Lennertz, Timothy J Brennan
BACKGROUND: Ringsted et al created a statistically validated questionnaire to assess pain-related limitations in daily activities following thoracic surgery and translated it to English. We utilized the questionnaire to assess the impact of pain impairing certain daily activities in a United States thoracic surgery population. OBJECTIVES: Examine if the questionnaire developed and translated to English by Ringsted et al to assess the effects of chronic pain after thoracic surgery on daily activities would be applicable in a sample of thoracic surgery patients in the United States...
March 2017: Pain Physician
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