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https://www.readbyqxmd.com/read/28324325/the-universe-of-ana-testing-a-case-for-point-of-care-ana-testing
#1
Konstantin N Konstantinov, Robert L Rubin
Testing for total antinuclear antibodies (ANA) is a critical tool for diagnosis and management of autoimmune diseases at both the primary care and subspecialty settings. Repurposing of ANA from a test for lupus to a test for any autoimmune condition has driven the increase in ANA requests. Changes in ANA referral patterns include early or subclinical autoimmune disease detection in patients with low pre-test probability and use of negative ANA results to rule out underlying autoimmune disease. A positive result can lead to further diagnostic considerations...
December 2017: Auto- Immunity Highlights
https://www.readbyqxmd.com/read/28324169/roles-of-centromedian-parafascicular-nuclei-of-thalamus-and-cholinergic-interneurons-in-the-dorsal-striatum-in-associative-learning-of-environmental-events
#2
REVIEW
Ko Yamanaka, Yukiko Hori, Takafumi Minamimoto, Hiroshi Yamada, Naoyuki Matsumoto, Kazuki Enomoto, Toshihiko Aosaki, Ann M Graybiel, Minoru Kimura
The thalamus provides a massive input to the striatum, but despite accumulating evidence, the functions of this system remain unclear. It is known, however, that the centromedian (CM) and parafascicular (Pf) nuclei of the thalamus can strongly influence particular striatal neuron subtypes, notably including the cholinergic interneurons of the striatum (CINs), key regulators of striatal function. Here, we highlight the thalamostriatal system through the CM-Pf to striatal CINs. We consider how, by virtue of the direct synaptic connections of the CM and PF, their neural activity contributes to the activity of CINs and striatal projection neurons (SPNs)...
March 21, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28318143/designing-squaraines-to-control-charge-injection-and-recombination-processes-in-nio-based-dye-sensitized-solar-cells
#3
Oliver Langmar, Davide Saccone, Anna Amat, Simona Fantacci, Guido Viscardi, Claudia Barolo, Ruben Costa, Dirk Michael Guldi
Herein, the synthesis of a novel family of squaraines (SQ) and their application in p-type dye-sensitized solar cells (DSSC) is presented. In particular, two sets of SQs were designed. The SQs have been characterized by using a joint theoretical, photophysical and electrochemical approach. Importantly, the presence of different central groups forces them into a frozen cis (dicyanovinyl group) or a trans (oxygen group) conformation. Based on the latter, the current work enables the direct comparison between cis and trans isomers, as well as the impact of a different number of anchors...
March 20, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28317858/near-infrared-photoluminescent-carbon-nanotubes-for-imaging-of-brown-fat
#4
Masako Yudasaka, Yohei Yomogida, Minfang Zhang, Takeshi Tanaka, Masako Nakahara, Norihiko Kobayashi, Yuko Okamatsu-Ogura, Ken Machida, Kazuhiko Ishihara, Kumiko Saeki, Hiromichi Kataura
Near-infrared photoluminescent single-walled carbon nanotubes (CNTs) are expected to provide effectual bio-imaging tools, although, as yet, only limited applications have been reported. Here, we report that CNTs coated with an amphiphilic and biocompatible polymer, poly(2-methacryloyloxyethyl phosphorylcholine-co-n-butyl methacrylate; PMB), generate high-quality images of brown fat. Brown fat is a heat-productive adipose tissue, which is attracting increasing attention as a new therapeutic target for obesity-associated metabolic disorders...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28316238/exfoliation-of-covalent-organic-frameworks-into-few-layer-redox-active-nanosheets-as-cathode-materials-for-lithium-ion-batteries
#5
Shan Wang, Qianyou Wang, Pengpeng Shao, Yuzhen Han, Xing Gao, Li Ma, Shuai Yuan, Xiaojie Ma, Junwen Zhou, Xiao Feng, Bo Wang
Covalent organic frameworks (COFs) have attracted growing interest by virtue of their structural diversity and tunability. Herein, we present a novel approach for the development of organic rechargeable battery cathodes in which three distinct redox-active COFs were successfully prepared and delaminated into 2D few-layer nanosheets. Compared with the pristine COFs, the exfoliated COFs with shorter Li(+) diffusion pathways allow a significant higher utilization efficiency of redox sites and faster kinetics for lithium storage...
March 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28316235/evaluation-of-nanobody-conjugates-and-protein-fusions-as-bioanalytical-reagents
#6
Virginia J Bruce, Brian R McNaughton
Enzyme-linked immunosorbent assay (ELISA), flow cytometry, and Western blot are common bioanalytical techniques. Successful execution traditionally requires the use of one or more commercially available antibody-small-molecule dye, or antibody-reporter protein conjugates that recognize relatively short peptide tags (<15 amino acids). However, the size of antibodies, and their molecular complexity (by virtue of post-translational disulfide formation and glycosylation) typically requires either expression in mammalian cells or purification from immunized mammals...
March 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28314119/a-combined-in-vitro-assay-for-evaluation-of-neurotrophic-activity-and-cytotoxicity
#7
Narayan D Chaurasiya, Surabhi Shukla, Babu L Tekwani
Neurotrophic assays are phenotypic methods to identify molecules that stimulate differentiation of neuronal cells. Bioactive small molecules with neurotrophic actions hold great promise as therapeutic agents for the treatment of neurodegenerative diseases and neuronal injuries by virtue of their ability to stimulate neuritic outgrowth. A combined in vitro method, which measures neurotrophic activity and cytotoxicity in a single assay, has been described. This assay, performed in 96-well microplates with PC12 and Neuroscreen-1 (NS-1; a subclone of PC12) cells, is a simple tool for identification of new neurotrophic agents...
March 1, 2017: SLAS Discov
https://www.readbyqxmd.com/read/28303366/ancillary-care-obligations-in-light-of-an-african-bioethic-from-entrustment-to-communion
#8
Thaddeus Metz
Henry Richardson recently published the first book ever devoted to ancillary care obligations, which roughly concern what medical researchers are morally required to provide to participants beyond what safety requires. In it, Richardson notes that he is presenting the 'only fully elaborated view out there' on this topic, which he calls the 'partial-entrustment model'. In this article, I provide a new theory of ancillary care obligations, one that is grounded on ideals of communion salient in the African philosophical tradition and that is intended to rival and surpass Richardson's model, which is a function of Western considerations of autonomy...
March 16, 2017: Theoretical Medicine and Bioethics
https://www.readbyqxmd.com/read/28302490/a-novel-quinazoline-based-analog-induces-g2-m-cell-cycle-arrest-and-apoptosis-in-human-a549-lung-cancer-cells-via-a-ros-dependent-mechanism
#9
Hailong Shi, Yan Li, Xiaorong Ren, Yaohong Zhang, Zhen Yang, Chenze Qi
6-amino-4-(4-phenoxyphenylethylamino)quinazoline (QNZ) is an excellent quinazoline-containing NF-κB inhibitor also acting as a novel anticancer agent. Considering both the medicinal significance of quinazoline scaffold and the tunable functionality of Michael acceptor-centric pharmacophores in the electrophilicity-based prooxidant strategy, we designed a novel QNZ-inspired electrophilic molecule QNZ-A by introducing a Michael acceptor unit at position-6 of quinazoline ring in QNZ. Our results identified QNZ-A as a promising selective cytotoxic agent against A549 cells...
March 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28300393/remote-control-and-modulation-of-cellular-events-by-plasmonic-gold-nanoparticles-implications-and-opportunities-for-biomedical-applications
#10
Jiayang Li, Jing Liu, Chunying Chen
Compared to traditional hyperthermia methods, gold nanoparticles (Au NPs) successfully achieve site-specific incremental temperature in deep tissues. By virtue of near-infrared (NIR) laser-mediated photothermal treatment, Au NPs have been widely explored in clinical and preclinical applications, including cancer therapy and tissue engineering. In this issue of ACS Nano, Suzuki, Ciofani, and colleagues demonstrate how gold nanoshells can remotely activate striated muscle cells via inducing myotube contraction and modulating related gene expression by mild heat stimulation under NIR irradiation...
March 16, 2017: ACS Nano
https://www.readbyqxmd.com/read/28296020/memristive-devices-with-highly-repeatable-analog-states-boosted-by-graphene-quantum-dots
#11
Changhong Wang, Wei He, Yi Tong, Yishu Zhang, Kejie Huang, Li Song, Shuai Zhong, Rajasekaran Ganeshkumar, Rong Zhao
Memristive devices, having a huge potential as artificial synapses for low-power neural networks, have received tremendous attention recently. Despite great achievements in demonstration of plasticity and learning functions, little progress has been made in the repeatable analog resistance states of memristive devices, which is, however, crucial for achieving controllable synaptic behavior. The controllable behavior of synapse is highly desired in building neural networks as it helps reduce training epochs and diminish error probability...
March 15, 2017: Small
https://www.readbyqxmd.com/read/28293947/water-solubilizing-hydrophobic-znaginse-zns-qds-with-tumor-targeted-crgd-sulfobetaine-pima-histamine-ligands-via-a-self-assembly-strategy-for-bio-imaging
#12
Tao Deng, Yanan Peng, Rong Zhang, Jie Wang, Jie Zhang, Yue-Qing Gu, Dechun Huang, Dawei Deng
Exploring the organic-to-aqueous phase transfer of quantum dots (QDs) is significant for achieving their versatile applications in biomedαical fields. In this thematic issue, surface modification, size control and biocompatibility of QDs and QDs-based nanocomposites are core problems. Herein, the new highly fluorescent tumor-targeted QDs-clusters consisting of ZnAgInSe/ZnS (ZAISe/ZnS) QDs and sulfobetaine-PIMA-histamine (SPH) polymer with the ανβ3 integrin receptor cyclic RGD (c-RGD) were developed via ligand exchange and an accompanying self-assemble process...
March 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28293194/quantification-of-internal-stress-strain-fields-in-human-tendon-unraveling-the-mechanisms-that-underlie-regional-tendon-adaptations-and-mal-adaptations-to-mechanical-loading-and-the-effectiveness-of-therapeutic-eccentric-exercise
#13
REVIEW
Constantinos N Maganaris, Panagiotis Chatzistergos, Neil D Reeves, Marco V Narici
By virtue of their anatomical location between muscles and bones, tendons make it possible to transform contractile force to joint rotation and locomotion. However, tendons do not behave as rigid links, but exhibit viscoelastic tensile properties, thereby affecting the length and contractile force in the in-series muscle, but also storing and releasing elastic stain energy as some tendons are stretched and recoiled in a cyclic manner during locomotion. In the late 90s, advancements were made in the application of ultrasound scanning that allowed quantifying the tensile deformability and mechanical properties of human tendons in vivo...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28292205/not-taking-the-easy-way-out-reframing-bariatric-surgery-from-low-effort-weight-loss-to-hard-work
#14
Sarah Trainer, Alexandra Brewis, Amber Wutich
Cultural notions equating greater morality and virtue with hard work and productive output are deeply embedded in American value systems. This is exemplified in how people understand and execute personal body projects, including efforts to become slim. Bariatric surgery is commonly viewed as a 'low-effort' means of losing weight, and individuals who opt for this surgery are often perceived to be 'cheating.' This extended ethnographic study within one bariatric program in the Southwestern United States shows how patients conscientiously perform this productivity...
April 2017: Anthropology & Medicine
https://www.readbyqxmd.com/read/28291685/synthesis-and-molecular-docking-studies-of-new-furochromone-derivatives-as-p38%C3%AE-mapk-inhibitors-targeting-human-breast-cancer-mcf-7-cells
#15
Kamelia M Amin, Yasmin M Syam, Manal M Anwar, Hamed I Ali, Tamer M Abdel-Ghani, Aya M Serry
Based on the reported high expression of p38α MAP kinase in invasive breast cancers and the activity of different functionalized chromone derivatives as p38α inhibitors, a new set of 4,9-dimethoxy/4-methoxy-7-methyl-5-oxo-5H-furo[3,2-g]chromone derivatives were efficiently synthesized aiming to introduce new p38α MAP kinase suppressors as new anti-breast cancer tools. Using GOLD program, molecular docking study of the target compounds into p38α MAP kinase binding pocket was performed to highlight their scores, mode of binding and the important interactions to the amino acid residues of the enzyme...
March 3, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28289276/david-skae-and-his-nineteenth-century-etiologic-psychiatric-diagnostic-system-looking-forward-by-looking-back
#16
K S Kendler
The Kraepelinian syndromal approach to diagnosis taken by DSM-III and its successors, which defines disorders by their clinical phenomenon, has come under rising criticism with increasing calls for an etiologically based nosology. The relative virtues of a syndromal versus etiologic psychiatric nosology have actually been debated within our field for a long time. To deepen and historically contextualize our current discussion, I review in detail the proposal for etiologic diagnostic systems for insanity by David Skae (1814-1873)...
March 14, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28288451/how-to-diagnose-and-classify-tattoo-complications-in-the-clinic-a-system-of-distinctive-patterns
#17
Jørgen Serup
Tattoo complications represent a broad spectrum of clinical entities and disease mechanisms. Infections are known, but chronic inflammatory reactions have hitherto been inconsistently reported and given many interpretations and terms. A clinical classification system of distinct patterns with emphasis on inflammatory tattoo reactions is introduced. Allergic reactions prevalent in red tattoos and often associated with azo pigments are manifested as the 'plaque elevation', 'excessive hyperkeratosis', and 'ulceronecrotic' patterns...
2017: Current Problems in Dermatology
https://www.readbyqxmd.com/read/28287549/detection-and-enrichment-of-rare-antigen-specific-b-cells-for-analysis-of-phenotype-and-function
#18
Mia J Smith, Thomas A Packard, Shannon K O'Neill, Rochelle M Hinman, Marynette Rihanek, Peter A Gottlieb, John C Cambier
B cells reactive with a specific antigen usually occur at a frequency of <0.05% of lymphocytes. For decades researchers have sought methods to isolate and enrich these rare cells for studies of their phenotype and biology. Approaches are inevitably based on the principle that B cells recognize native antigen by virtue of cell surface receptors that are representative in specificity of antibodies that will eventually be secreted by their differentiated daughters. Perhaps the most obvious approach to the problem involves use of fluorochrome-conjugated antigens in conjunction with fluorescence-activated cell sorting (FACS)...
February 16, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28284895/disengaged-parenting-structural-equation-modeling-with-child-abuse-insecure-attachment-and-adult-symptomatology
#19
John Briere, Marsha Runtz, Erin Eadie, Noémie Bigras, Natacha Godbout
Based on attachment theory, we hypothesized that self-reported childhood experiences of disengaged parenting (DP) would predict adults' psychological symptoms even more than, on average, childhood sexual, physical, or psychological abuse. In a large (N=640) university sample, bootstrapped multiple regression analyses indicated that although various forms of child maltreatment were correlated with symptomatology at the univariate level, DP was the primary multivariate predictor. Structural equation modeling indicated significant direct paths from (a) DP to both nonsexual child maltreatment and sexual abuse, (b) DP and nonsexual child maltreatment to insecure attachment, and (c) sexual abuse and insecure attachment to symptomatology...
March 9, 2017: Child Abuse & Neglect
https://www.readbyqxmd.com/read/28284549/personal-exposure-to-fine-particulate-matter-lung-function-and-serum-club-cell-secretory-protein-clara
#20
Cuicui Wang, Jing Cai, Renjie Chen, Jingjin Shi, Changyuan Yang, Huichu Li, Zhijing Lin, Xia Meng, Cong Liu, Yue Niu, Yongjie Xia, Zhuohui Zhao, Weihua Li, Haidong Kan
BACKGROUND: The underlying mechanisms about the association between ambient fine particulate matter (PM2.5) and lung function were unclear. Few epidemiological studies have evaluated the potential mediating effects of serum club cell secretory protein (Clara) (CC16), a biomarker of pulmonary epithelium integrity. OBJECTIVES: To evaluate the short-term effect of personal PM2.5 exposure on lung function and to explore the potential mediating role of CC16 in this effect...
March 9, 2017: Environmental Pollution
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