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https://www.readbyqxmd.com/read/28214703/polyester-fabric-sheet-layers-functionalized-with-graphene-oxide-for-sensitive-isolation-of-circulating-tumor-cells
#1
Jiyoon Bu, Young Jun Kim, Yoon-Tae Kang, Tae Hee Lee, Jeongsuk Kim, Young-Ho Cho, Sae-Won Han
The metastasis of cancer is strongly associated with the spread of circulating tumor cells (CTCs). Based on the microfluidic devices, which offer rapid recovery of CTCs, a number of studies have demonstrated the potential of CTCs as a diagnostic tool. However, not only the insufficient specificity and sensitivity derived from the rarity and heterogeneity of CTCs, but also the high-cost fabrication processes limit the use of CTC-based medical devices in commercial. Here, we present a low-cost fabric sheet layers for CTC isolation, which are composed of polyester monofilament yarns...
February 12, 2017: Biomaterials
https://www.readbyqxmd.com/read/28214180/a-successful-experience-of-the-iranian-blood-transfusion-organization-in-improving-accessibility-and-affordability-of-plasma-derived-medicine
#2
REVIEW
Azita Chegini, Seyed Ardeshir Torab, Ali Akbar Pourfatollah
Plasma is the liquid part of blood. It is estimated 21.6 million liters of plasma collect from Whole blood annually. From these plasma, 4.2 million liters transfuse, 8.1 million liters fractionate, 9.3 million liters waste. Nowadays, blood products and PDM (plasma derived medicine) consider as essential medicine in modern health care and transfusion medicine. Iranian blood transfusion organization as a non-profit organization was established in 1974 in order to centralize all blood transfusion activities from donor recruitment to distribution of blood components to hospitals...
January 4, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28214091/multidonor-intensive-faecal-microbiota-transplantation-for-active-ulcerative-colitis-a-randomised-placebo-controlled-trial
#3
Sudarshan Paramsothy, Michael A Kamm, Nadeem O Kaakoush, Alissa J Walsh, Johan van den Bogaerde, Douglas Samuel, Rupert W L Leong, Susan Connor, Watson Ng, Ramesh Paramsothy, Wei Xuan, Enmoore Lin, Hazel M Mitchell, Thomas J Borody
BACKGROUND: The intestinal microbiota is implicated in the pathogenesis of ulcerative colitis. Faecal microbiota transplantation is a novel form of therapeutic microbial manipulation, but its efficacy in ulcerative colitis is uncertain. We aimed to establish the efficacy of intensive-dosing, multidonor, faecal microbiota transplantation in active ulcerative colitis. METHODS: We conducted a multicentre, double-blind, randomised, placebo-controlled trial at three hospitals in Australia...
February 14, 2017: Lancet
https://www.readbyqxmd.com/read/28211642/biomechanical-strain-exacerbates-inflammation-on-a-progeria-on-a-chip-model
#4
João Ribas, Yu Shrike Zhang, Patrícia R Pitrez, Jeroen Leijten, Mario Miscuglio, Jeroen Rouwkema, Mehmet Remzi Dokmeci, Xavier Nissan, Lino Ferreira, Ali Khademhosseini
Organ-on-a-chip platforms seek to recapitulate the complex microenvironment of human organs using miniaturized microfluidic devices. Besides modeling healthy organs, these devices have been used to model diseases, yielding new insights into pathophysiology. Hutchinson-Gilford progeria syndrome (HGPS) is a premature aging disease showing accelerated vascular aging, leading to the death of patients due to cardiovascular diseases. HGPS targets primarily vascular cells, which reside in mechanically active tissues...
February 17, 2017: Small
https://www.readbyqxmd.com/read/28211142/a-stable-hexakis-guanidino-benzene-realization-of-the-strongest-neutral-organic-four-electron-donor
#5
Benjamin Eberle, Elisabeth Kaifer, Hans-Jörg Himmel
The growing demand for efficient batteries has stimulated the search for redox-active organic compounds with multistage redox behavior, as materials with large charge capacity. Herein we report the synthesis and properties of the first hexakis(guanidino)benzene derivative: a strong neutral organic electron donor with reversible multistage redox behavior and a record low redox potential for donation of four electrons. Detailed structural and spectroscopic characterization of three redox states (0, +2, and +4) reveal its unique electronic features...
February 17, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28210730/tuning-the-ambipolar-charge-transport-properties-of-tricyanovinyl-substituted-carbazole-based-materials
#6
Marta Reig, Gintautas Bagdziunas, Dmytro Volyniuk, Juozas V Grazulevicius, Dolores Velasco
A series of push-pull carbazole-based compounds has been experimentally and theoretically characterized in combination with the X-ray analysis of the corresponding single crystals. The introduction of the strong electron-withdrawing tricyanovinyl group in the carbazole core affords electron-transporting ability in addition to the characteristic hole-transporting properties exhibited by donor carbazole derivatives.
February 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28210226/combination-of-collagen-based-scaffold-and-bioactive-factors-induces-adipose-derived-mesenchymal-stem-cells-chondrogenic-differentiation-in-vitro
#7
Giovanna Calabrese, Stefano Forte, Rosario Gulino, Francesco Cefalì, Elisa Figallo, Lucia Salvatorelli, Eugenia T Maniscalchi, Giuseppe Angelico, Rosalba Parenti, Massimo Gulisano, Lorenzo Memeo, Raffaella Giuffrida
Recently, multipotent mesenchymal stem cells (MSCs) have attracted much attention in the field of regenerative medicine due to their ability to give rise to different cell types, including chondrocytes. Damaged articular cartilage repair is one of the most challenging issues for regenerative medicine, due to the intrinsic limited capability of cartilage to heal because of its avascular nature. While surgical approaches like chondral autografts and allografts provide symptoms and function improvement only for a short period, MSC based stimulation therapies, like microfracture surgery or autologous matrix-induced chondrogenesis demonstrate to be more effective...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28205547/microrna-17-family-promotes-polycystic-kidney-disease-progression-through-modulation-of-mitochondrial-metabolism
#8
Sachin Hajarnis, Ronak Lakhia, Matanel Yheskel, Darren Williams, Mehran Sorourian, Xueqing Liu, Karam Aboudehen, Shanrong Zhang, Kara Kersjes, Ryan Galasso, Jian Li, Vivek Kaimal, Steven Lockton, Scott Davis, Andrea Flaten, Joshua A Johnson, William L Holland, Christine M Kusminski, Philipp E Scherer, Peter C Harris, Marie Trudel, Darren P Wallace, Peter Igarashi, Edmund C Lee, John R Androsavich, Vishal Patel
Autosomal dominant polycystic kidney disease (ADPKD) is the most frequent genetic cause of renal failure. Here we identify miR-17 as a target for the treatment of ADPKD. We report that miR-17 is induced in kidney cysts of mouse and human ADPKD. Genetic deletion of the miR-17∼92 cluster inhibits cyst proliferation and PKD progression in four orthologous, including two long-lived, mouse models of ADPKD. Anti-miR-17 treatment attenuates cyst growth in short-term and long-term PKD mouse models. miR-17 inhibition also suppresses proliferation and cyst growth of primary ADPKD cysts cultures derived from multiple human donors...
February 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28203455/risk-balancing-of-cold-ischemic-time-against-night-shift-surgery-possibly-reduces-rates-of-reoperation-and-perioperative-graft-loss
#9
Nikos Emmanouilidis, Julius Boeckler, Bastian P Ringe, Alexander Kaltenborn, Frank Lehner, Hans Friedrich Koch, Jürgen Klempnauer, Harald Schrem
Background. This retrospective cohort study evaluates the advantages of risk balancing between prolonged cold ischemic time (CIT) and late night surgery. Methods. 1262 deceased donor kidney transplantations were analyzed. Multivariable regression was used to determine odds ratios (ORs) for reoperation, graft loss, delayed graft function (DGF), and discharge on dialysis. CIT was categorized according to a forward stepwise pattern ≤1h/>1h, ≤2h/>2h, ≤3h/>3h,…, ≤nh/>nh. ORs for DGF were plotted against CIT and a nonlinear regression function with best R(2) was identified...
2017: Journal of Transplantation
https://www.readbyqxmd.com/read/28199374/a-novel-mycobacterial-in-vitro-infection-assay-identifies-differences-of-induced-macrophage-apoptosis-between-cd4-and-cd8-t-cells
#10
Vanesa Nkwouano, Sven Witkowski, Nidja Rehberg, Rainer Kalscheuer, Norman Nausch, Ertan Mayatepek, Marc Jacobsen
Macrophages are natural host cells for pathogenic mycobacteria, like Mycobacterium tuberculosis (M.tb). Immune surveillance by T cells and interaction with M.tb infected macrophages is crucial for protection against M.tb reactivation and development of active tuberculosis. Several factors play a role in the control of M.tb infection but reliable biomarkers remain elusive. One major obstacle is the absence of functional in vitro assays which allow concomitant determination of i) mycobacterial eradication; ii) cytotoxic effects on host macrophages; and iii) effector T-cell functions...
2017: PloS One
https://www.readbyqxmd.com/read/28198124/long-distance-axonal-growth-and-protracted-functional-maturation-of-neurons-derived-from-human-induced-pluripotent-stem-cells-after-intracerebral-transplantation
#11
Jonathan C Niclis, Christopher Turner, Jennifer Durnall, Stuart McDougal, Jessica A Kauhausen, Bryan Leaw, Mirella Dottori, Clare L Parish, Lachlan H Thompson
The capacity for induced pluripotent stem (iPS) cells to be differentiated into a wide range of neural cell types makes them an attractive donor source for autologous neural transplantation therapies aimed at brain repair. Translation to the in vivo setting has been difficult, however, with mixed results in a wide variety of preclinical models of brain injury and limited information on the basic in vivo properties of neural grafts generated from human iPS cells. Here we have generated a human iPS cell line constitutively expressing green fluorescent protein as a basis to identify and characterize grafts resulting from transplantation of neural progenitors into the adult rat brain...
February 15, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28198077/translation-strategies-contradiction-and-the-theory-of-social-representations-why-discussing-needles-may-improve-blood-donor-retention
#12
Gail Moloney, Jane Hayman, Marguerite Gamble, Geoff Smith, Rob Hall
Retaining blood donors is a cost-effective way of ensuring a safe blood supply, yet despite the plethora of research, only 5.1% of the eligible population in Australia donate blood and 40% of these do not make a second donation. We offer an alternative to traditional approaches by conceptualizing blood donation within social representations theory as socially derived symbolic knowledge with a specific focus on cognitive polyphasia and Guimelli's (1998) normative and functional dimensions. An online survey, completed by 703 residents from NSW Australia, comprised a blood donation word association task, Likert-style questions constructed from previous word association data and contextualized blood donation statements...
February 15, 2017: British Journal of Social Psychology
https://www.readbyqxmd.com/read/28198061/antiinflammatory-oxicams-as-multi-donor-ligand-systems-ph-and-solvent-dependent-coordination-modes-of-meloxicam-and-piroxicam-to-ru-and-os
#13
Farhana Aman, Muhammad Hanif, Mario Kubanik, Adnan Ashraf, Tilo Soehnel, Stephen Jamieson, Waseeq Siddiqui, Christian Hartinger
The nitrogen- and sulfur-containing 1,2-benzothiazines meloxicam and piroxicam are widely used as nonsteroidal antiinflammatory drugs. Intrigued by the presence of multiple donor atoms and therefore a potentially rich coordination chemistry, we prepared a series of organometallic Ru and Os compounds with meloxicam and piroxicam featuring either as mono- or bidentate ligand systems. The choice of the solvent and the pH value was identified as the critical parameter to achieve selectively mono- or bidentate coordination...
February 14, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28196888/sulfide-responsive-transcriptional-repressor-sqrr-functions-as-a-master-regulator-of-sulfide-dependent-photosynthesis
#14
Takayuki Shimizu, Jiangchuan Shen, Mingxu Fang, Yixiang Zhang, Koichi Hori, Jonathan C Trinidad, Carl E Bauer, David P Giedroc, Shinji Masuda
Sulfide was used as an electron donor early in the evolution of photosynthesis, with many extant photosynthetic bacteria still capable of using sulfur compounds such as hydrogen sulfide (H2S) as a photosynthetic electron donor. Although enzymes involved in H2S oxidation have been characterized, mechanisms of regulation of sulfide-dependent photosynthesis have not been elucidated. In this study, we have identified a sulfide-responsive transcriptional repressor, SqrR, that functions as a master regulator of sulfide-dependent gene expression in the purple photosynthetic bacterium Rhodobacter capsulatus SqrR has three cysteine residues, two of which, C41 and C107, are conserved in SqrR homologs from other bacteria...
February 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28195679/beyond-donor-acceptor-d-a-approach-structure-optoelectronic-properties-organic-photovoltaic-performance-correlation-in-new-d-a1-d-a2-low-bandgap-conjugated-polymers
#15
Christos L Chochos, Sofia Drakopoulou, Athanasios Katsouras, Benedetta M Squeo, Christian Sprau, Alexander Colsmann, Vasilis G Gregoriou, Alex-Palma Cando, Sybille Allard, Ullrich Scherf, Nicola Gasparini, Negar Kazerouni, Tayebeh Ameri, Christoph J Brabec, Apostolos Avgeropoulos
Low-bandgap near-infrared polymers are usually synthesized using the common donor-acceptor (D-A) approach. However, recently polymer chemists are introducing more complex chemical concepts for better fine tuning of their optoelectronic properties. Usually these studies are limited to one or two polymer examples in each case study so far, though. In this study, the dependence of optoelectronic and macroscopic (device performance) properties in a series of six new D-A1 -D-A2 low bandgap semiconducting polymers is reported for the first time...
February 13, 2017: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/28195151/in-patients-with-chronic-aplastic-anemia-bone-marrow-derived-mscs-regulate-the-treg-th17-balance-by-influencing-the-notch-rbp-j-foxp3-ror%C3%AE-t-pathway
#16
Hongbo Li, Lin Wang, Yan Pang, Zujun Jiang, Zenghui Liu, Haowen Xiao, Haijia Chen, Xiaohu Ge, Hai Lan, Yang Xiao
The standard treatment for aplastic anemia (AA) in young patients is a matched sibling hematopoietic stem cell transplant. Transfusion of a chronic AA patient with allogeneic bone marrow-derived mesenchymal stromal cells (BMMSCs) is currently being developed as a cell-based therapy, and the safety and efficacy of such transfusions are being continuously improved. Nevertheless, the mechanisms by which BMMSCs exert their therapeutic effects remain to be elucidated. In this study, mesenchymal stromal cells (MSCs) obtained from bone marrow donors were concentrated and intravenously injected into 15 chronic AA patients who had been refractory to prior immunosuppressive therapy...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28194632/characterization-of-an-orthotopic-colorectal-cancer-mouse-model-and-its-feasibility-for-accurate-quantification-in-positron-emission-tomography
#17
Sara Rapic, Christel Vangestel, Jeroen Verhaeghe, Tim Van den Wyngaert, Rukun Hinz, Marleen Verhoye, Patrick Pauwels, Steven Staelens, Sigrid Stroobants
PURPOSE: Quantification in positron emission tomography (PET) imaging of an orthotopic mouse model of colorectal cancer (CRC) is challenging due to difficult tumor delineation. We aimed to establish a reproducible delineation approach, evaluate its feasibility for reliable PET quantification and compare its added translational value with its subcutaneous counterpart. PROCEDURES: A subcutaneous Colo205-luc2 tumor fragment harvested from a donor mouse was transplanted onto the caecum of nude mice, with (n = 10) or without (n = 10) the addition of an X-ray detectable thread...
February 13, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/28194065/adverse-events-during-apheresis-procedures-audit-at-a-tertiary-hospital
#18
Kanchan Dogra, Parag Fulzele, Diptiranjan Rout, Rahul Chaurasia, Poonam Coshic, Kabita Chatterjee
Apheretic platelets are better quality blood components which reduce donor exposure and chances of TTIs to transfusion recipients when compared to the whole blood derived components. Though safe, these apheretic donations are associated with donor adverse events. We evaluated the incidence of such adverse events associated with the modern apheresis procedures that would provide an insight as well as help formulating preventive steps to avoid frequent occurrences of such events. This prospective audit-based observational study was conducted over 1 year...
March 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28193774/universal-car-t-cells-successfully-treat-leukemia
#19
(no author information available yet)
Two infants with relapsed, refractory B-cell acute lymphoblastic leukemia went into complete remission after being treated with CD19-targeting CAR T cells derived from an unmatched donor. The study is the first to demonstrate that a universal form of CAR T-cell therapy can be safely utilized.
February 13, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28191846/adding-a-second-quinol-to-a-redox-responsive-mri-contrast-agent-improves-its-relaxivity-response-to-h2o2
#20
Meng Yu, Meghan B Ward, Alicja Franke, Stephen L Ambrose, Zachary L Whaley, Thomas Miller Bradford, John D Gorden, Ronald J Beyers, Russell C Cattley, Ivana Ivanović-Burmazović, Dean D Schwartz, Christian R Goldsmith
The overproduction of reactive oxygen species has been linked to a wide array of health disorders. The ability to noninvasively monitor oxidative stress in vivo could provide substantial insight into the progression of these conditions and, in turn, could facilitate the development of better diagnosis and treatment options. A mononuclear Mn(II) complex with the redox-active ligand N,N'-bis(2,5-dihydroxybenzyl)-N,N'-bis(2-pyridinylmethyl)-1,2-ethanediamine (H4qtp2) was made and characterized. A previously prepared Mn(II) complex with a ligand containing a single quinol subunit was found to display a modest T1-derived relaxivity response to H2O2...
February 13, 2017: Inorganic Chemistry
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