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https://www.readbyqxmd.com/read/29668129/-tuberculosis-in-the-era-of-anti-tnf-alpha-therapy-why-does-the-risk-still-exist
#1
John-Leonardo Torres-Castiblanco, Jorge Alberto Carrillo, Daniel Hincapié-Urrego, Adriana Rojas-Villarraga
Rheumatoid arthritis is an autoimmune systemic disease characterized mainly by inflammatory compromise of diarthrodial joints. Multiple drug therapies have been developed to control the activity of rheumatoid arthritis, among them, the first line of disease-modifying antirheumatic drugs (DMARD), and novel drug therapies such as the anti-TNF alpha therapy, with satisfactory clinical outcomes.Despite this positive fact, the use of this therapy implies the risk of producing negative effects due to its mechanism of action, which has been associated with multiple infections, especially tuberculosis, making it necessary to use screen tests before resorting to this kind of drugs...
March 15, 2018: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/29668063/beyond-migration-chemokines-in-lymphocyte-priming-differentiation-and-modulating-effector-functions
#2
REVIEW
Julia M Laufer, Daniel F Legler
Chemokines and their receptors coordinate the positioning of leukocytes, and lymphocytes in particular, in space and time. Discrete lymphocyte subsets, depending on their activation and differentiation status, express various sets of chemokine receptors to be recruited to distinct tissues. Thus, the network of chemokines and their receptors ensures the correct localization of specialized lymphocyte subsets within the appropriate microenvironment enabling them to search for cognate antigens, to become activated, and to fulfill their effector functions...
April 18, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29667933/a-cbct-study-of-the-gravity-induced-movement-in-rotating-rabbits
#3
Jeffrey Barber, Chun-Chien Shieh, William Counter, Jonathan R Sykes, Peter Bennett, Verity Ahern, Stéphanie Corde, Soo-Min Heng, Paul White, Michael Jackson, Paul Liu, Paul J Keall, Ilana Feain
Fixed-beam radiotherapy systems with subjects rotating about a longitudinal (horizontal) axis are subject to gravity-induced motion. Limited reports on the degree of this motion, and any deformation, has been reported previously. The purpose of this study is to quantify the degree of anatomical motion caused by rotating a subject around a longitudinal axis, using cone-beam CT (CBCT). 
 
 In the current study, a purpose-made longitudinal rotating was aligned to a Varian TrueBeam kV imaging system...
April 18, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29667925/massive-over-representation-of-solute-binding-proteins-sbps-from-the-tripartite-tricarboxylate-transporter-ttt-family-in-the-genome-of-the-%C3%AE-proteobacterium-rhodoplanes-sp-z2-yc6860
#4
Leonardo T Rosa, Vicki Springthorpe, Matheus E Bianconi, Gavin H Thomas, David J Kelly
Lineage-specific expansion (LSE) of protein families is a widespread phenomenon in many eukaryotic genomes, but is generally more limited in bacterial genomes. Here, we report the presence of 434 genes encoding solute-binding proteins (SBPs) from the tripartite tricarboxylate transporter (TTT) family, within the 8.2 Mb genome of the α-proteobacterium Rhodoplanes sp. Z2-YC6860, a gene family over-representation of unprecedented abundance in prokaryotes. Representing over 6 % of the total number of coding sequences, the SBP genes are distributed across the whole genome but are found rarely in low-GC islands, where the gene density for this family is much lower...
April 18, 2018: Microbial Genomics
https://www.readbyqxmd.com/read/29667869/evaluation-of-an-innovative-spinal-cord-stimulator-platform-for-the-treatment-of-chronic-pain
#5
Christopher Davies, Carlee Komoroski, Lance Roy
Spinal cord stimulation (SCS) is an ever-evolving therapy for the treatment of chronic pain. Currently, there are four main companies offering a variety of options for SCS. The Intellis™ system is the latest offering from Medtronic (MN, USA). Intellis offers the smallest implantable SCS pulse generator available and is capable of multiple different modes of stimulation, some of which can be run simultaneously. With an intrinsic accelerometer, the device is capable of sensing various patient positions and can automatically adjust stimulation intensity...
April 18, 2018: Pain Management
https://www.readbyqxmd.com/read/29667742/genetic-association-and-expression-analyses-of-the-phosphatidylinositol-4-phosphate-5-kinase-pip5k1c-gene-in-alcohol-use-disorder-relevance-for-pain-signaling-and-alcohol-use
#6
Ji Soo Lee, Jill L Sorcher, Allison D Rosen, Ruslan Damadzic, Hui Sun, Melanie Schwandt, Markus Heilig, John Kelly, Kelsey L Mauro, Audrey Luo, Daniel Rosoff, Christine Muench, Jeesun Jung, Zachary A Kaminsky, Falk W Lohoff
BACKGROUND: The gene encoding Phosphatidylinositol-4-Phosphate 5-Kinase (PIP5K1C) has been recently implicated in pain regulation. Interestingly, a recent cross-tissue and cross-phenotypic epigenetic analysis identified the same gene in alcohol use disorder (AUD). Given the high comorbidity between AUD and chronic pain, we hypothesized that genetic variation in PIP5K1C might contribute to susceptibility to AUD. METHODS: We conducted a case-control association study of genetic variants in PIP5K1C...
April 18, 2018: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/29667475/how-family-caregivers-help-older-relatives-navigate-statutory-services-at-the-end-of-life-a-descriptive-qualitative-study
#7
Lisa Ann Williams, Tess Moeke-Maxwell, Janine Wiles, Stella Black, Gabriella Trussardi, Ngaire Kerse, Merryn Gott
BACKGROUND: A key challenge in meeting the palliative care needs of people in advanced age is the multiple healthcare and social service agencies typically involved in their care. The 'patient navigator' model, originally developed in cancer care, is the professional solution most often recommended to address this challenge. However, little attention has been paid, or is known, about the role that family carers play in enabling their dying relatives to negotiate service gaps. AIM: To explore the role family caregivers play in helping people dying in advanced old age navigate health services at the end of life...
April 1, 2018: Palliative Medicine
https://www.readbyqxmd.com/read/29667453/impaired-health-related-quality-of-life-and-related-risk-factors-among-u-s-adults-with-asthma
#8
Cynthia A Pate, Hatice S Zahran, Cathy M Bailey
Objective This study assessed Health-related Quality of Life (HRQoL) and related risk factors among adults with asthma in the United States. Using the 2015 Behavioral Risk Factor Surveillance System (BRFSS), we examined the association between four domains of impaired HRQoL and selected explanatory factors.  Methods A BRFSS sample of 39 321 adults with asthma was used in this study. We examined the association between fair/poor health, ≥14 mentally unhealthy days, ≥14 physically unhealthy days, and ≥14 days of activity limitation and selected explanatory variables (sex, race/ethnicity, age, annual household income, healthcare coverage, physical activity, smoking status, Body Mass Index (BMI), having a coexisting disease, and being diagnosed with depression) using multivariable logistic regression models...
April 18, 2018: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/29667176/pre-diagnostic-blood-immune-markers-incidence-and-progression-of-b-cell-lymphoma-and-multiple-myeloma-univariate-and-functionally-informed-multivariate-analyses
#9
Roel Vermeulen, Fatemeh Saberi Hosnijeh, Barbara Bodinier, Lützen Portengen, Benoît Liquet, Javiera Garrido-Manriquez, Henk Lokhorst, Ingvar A Bergdahl, Soterios A Kyrtopoulos, Ann-Sofie Johansson, Panagiotis Georgiadis, Beatrice Melin, Domenico Palli, Vittorio Krogh, Salvatore Panico, Carlotta Sacerdote, Rosario Tumino, Paolo Vineis, Raphaële Castagné, Marc Chadeau-Hyam
Recent prospective studies have shown that dysregulation of the immune system may precede the development of B-cell lymphomas (BCL) in immunocompetent individuals. However, to date, the studies were restricted to a few immune markers, which were considered separately. Using a nested case-control study within two European prospective cohorts, we measured plasma levels of 28 immune markers in samples collected a median of 6 years prior to diagnosis (range, 2.01-15.97) in 268 incident cases of BCL (including multiple myeloma) and matched controls...
April 18, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29667156/how-we-manage-patients-with-plasmacytomas
#10
REVIEW
Despina Fotiou, Meletios A Dimopoulos, Efstathios Kastritis
PURPOSE OF REVIEW: To discuss the diagnostic approach, treatment options, and future considerations in the management of plasmacytomas, either solitary or in the context of overt multiple myeloma (MM). RECENT FINDINGS: Advanced imaging techniques such as whole-body magnetic resonance imaging and positron emission tomography/computerized tomography are essential for the diagnostic workup of solitary plasmacytomas (SP) to rule out the presence of other disease foci...
April 17, 2018: Current Hematologic Malignancy Reports
https://www.readbyqxmd.com/read/29667038/complex-drug-drug-gene-disease-interactions-involving-cytochromes-p450-systematic-review-of-published-case-reports-and-clinical-perspectives
#11
REVIEW
Flavia Storelli, Caroline Samer, Jean-Luc Reny, Jules Desmeules, Youssef Daali
Drug pharmacokinetics (PK) is influenced by multiple intrinsic and extrinsic factors, among which concomitant medications are responsible for drug-drug interactions (DDIs) that may have a clinical relevance, resulting in adverse drug reactions or reduced efficacy. The addition of intrinsic factors affecting cytochromes P450 (CYPs) activity and/or expression, such as genetic polymorphisms and diseases, may potentiate the impact and clinical relevance of DDIs. In addition, greater variability in drug levels and exposures has been observed when such intrinsic factors are present in addition to concomitant medications perpetrating DDIs...
April 17, 2018: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/29666622/chemotactic-cues-for-notch1-dependent-leukemia
#12
REVIEW
Erich Piovan, Valeria Tosello, Alberto Amadori, Paola Zanovello
The NOTCH signaling pathway is a conserved signaling cascade that regulates many aspects of development and homeostasis in multiple organ systems. Aberrant activity of this signaling pathway is linked to the initiation and progression of several hematological malignancies, exemplified by T-cell acute lymphoblastic leukemia (T-ALL). Interestingly, frequent non-mutational activation of NOTCH1 signaling has recently been demonstrated in B-cell chronic lymphocytic leukemia (B-CLL), significantly extending the pathogenic significance of this pathway in B-CLL...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29666466/a-nanofluidic-knot-factory-based-on-compression-of-single-dna-in-nanochannels
#13
Susan Amin, Ahmed Khorshid, Lili Zeng, Philip Zimny, Walter Reisner
Knots form when polymers self-entangle, a process enhanced by compaction with important implications in biological and artificial systems involving chain confinement. In particular, new experimental tools are needed to assess the impact of multiple variables influencing knotting probability. Here, we introduce a nanofluidic knot factory for efficient knot formation and detection. Knots are produced during hydrodynamic compression of single DNA molecules against barriers in a nanochannel; subsequent extension of the chain enables direct assessment of the number of independently evolving knots...
April 17, 2018: Nature Communications
https://www.readbyqxmd.com/read/29666281/pathogenic-effects-of-ifit2-and-interferon-%C3%AE-during-fatal-systemic-candida-albicans-infection
#14
Marcin Stawowczyk, Shamoon Naseem, Valeria Montoya, Darren P Baker, James Konopka, Nancy C Reich
A balanced immune response to infection is essential to prevent the pathology and tissue damage that can occur from an unregulated or hyperactive host defense. Interferons (IFNs) are critical mediators of the innate defense to infection, and in this study we evaluated the contribution of a specific gene coding for IFIT2 induced by type I IFNs in a murine model of disseminated Candida albicans Invasive candidiasis is a frequent challenge during immunosuppression or surgical medical interventions, and C. albicans is a common culprit that leads to high rates of mortality...
April 17, 2018: MBio
https://www.readbyqxmd.com/read/29666269/worldwide-distribution-of-the-dcdc2-read1-regulatory-element-and-its-relationship-with-phoneme-variation-across-languages
#15
Mellissa M C DeMille, Kevin Tang, Chintan M Mehta, Christopher Geissler, Jeffrey G Malins, Natalie R Powers, Beatrice M Bowen, Andrew K Adams, Dongnhu T Truong, Jan C Frijters, Jeffrey R Gruen
DCDC2 is a gene strongly associated with components of the phonological processing system in animal models and in multiple independent studies of populations and languages. We propose that it may also influence population-level variation in language component usage. To test this hypothesis, we investigated the evolution and worldwide distribution of the READ1 regulatory element within DCDC2 , and compared its distribution with variation in different language properties. The mutational history of READ1 was estimated by examining primate and archaic hominin sequences...
April 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29666238/rapid-acquisition-and-model-based-analysis-of-cell-free-transcription-translation-reactions-from-nonmodel-bacteria
#16
Simon J Moore, James T MacDonald, Sarah Wienecke, Alka Ishwarbhai, Argyro Tsipa, Rochelle Aw, Nicolas Kylilis, David J Bell, David W McClymont, Kirsten Jensen, Karen M Polizzi, Rebekka Biedendieck, Paul S Freemont
Native cell-free transcription-translation systems offer a rapid route to characterize the regulatory elements (promoters, transcription factors) for gene expression from nonmodel microbial hosts, which can be difficult to assess through traditional in vivo approaches. One such host, Bacillus megaterium , is a giant Gram-positive bacterium with potential biotechnology applications, although many of its regulatory elements remain uncharacterized. Here, we have developed a rapid automated platform for measuring and modeling in vitro cell-free reactions and have applied this to B...
April 17, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29666156/circulating-bacterial-fragments-as-cardiovascular-risk-factors-in-ckd
#17
Cheuk-Chun Szeto, Christopher William McIntyre, Philip Kam-Tao Li
Cardiovascular disease (CVD) is a major cause of mortality and morbidity in patients with CKD. In the past decade, intestinal dysbiosis and altered gut epithelial barrier function are increasingly recognized in CKD. Uremic patients have slow intestinal transit time, impaired protein assimilation, and decreased consumption of dietary fiber. The use of multiple medications also may contribute to the proliferation of dysbiotic bacteria, which affect the barrier function of intestinal epithelium. In addition, fluid overload and uremic toxins per se directly reduce the gut barrier function...
April 17, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29666150/epigenetics-and-epitranscriptomics-in-temporal-patterning-of-cortical-neural-progenitor-competence
#18
REVIEW
Ki-Jun Yoon, Caroline Vissers, Guo-Li Ming, Hongjun Song
During embryonic brain development, neural progenitor/stem cells (NPCs) sequentially give rise to different subtypes of neurons and glia via a highly orchestrated process. To accomplish the ordered generation of distinct progenies, NPCs go through multistep transitions of their developmental competence. The molecular mechanisms driving precise temporal coordination of these transitions remains enigmatic. Epigenetic regulation, including changes in chromatin structures, DNA methylation, and histone modifications, has been extensively investigated in the context of cortical neurogenesis...
April 17, 2018: Journal of Cell Biology
https://www.readbyqxmd.com/read/29666131/doctors-on-the-move-a-european-case-study-on-the-key-characteristics-of-national-recertification-systems
#19
Carolin Sehlbach, Marjan J Govaerts, Sharon Mitchell, Gernot G U Rohde, Frank W J M Smeenk, Erik W Driessen
OBJECTIVES: With increased cross-border movement, ensuring safe and high-quality healthcare has gained primacy. The purpose of recertification is to ensure quality of care through periodically attesting doctors' professional proficiency in their field. Professional migration and facilitated cross-border recognition of qualifications, however, make us question the fitness of national policies for safeguarding patient care and the international accountability of doctors. DESIGN AND SETTING: We performed document analyses and conducted 19 semistructured interviews to identify and describe key characteristics and effective components of 10 different European recertification systems, each representing one case (collective case study)...
April 17, 2018: BMJ Open
https://www.readbyqxmd.com/read/29666084/multiple-myeloma-masquerading-as-diabetic-macular-oedema
#20
Kavitha Rao, Hemanth Murthy, N S Muralidhar, Padmaja Kumari Rani
A 58-year-old man, a known diabetic and hypertensive for 5 years was presented to us with a drop in reading vision in both eyes of 2 months duration. His best-corrected visual acuity was 6/24, N36 in both eyes. Fundus findings revealed moderate non-proliferative diabetic retinopathy with bilateral diffuse macular oedema. When conventional therapy with intravitreal ranibizumab did not alter the clinical picture, we looked into the differential diagnosis of bilateral persistent macular detachments and investigated further...
April 17, 2018: BMJ Case Reports
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