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https://www.readbyqxmd.com/read/27933582/microrna-181c-ameliorates-cognitive-impairment-induced-by-chronic-cerebral-hypoperfusion-in-rats
#1
Chen Fang, Qian Li, Guowen Min, Min Liu, Jing Cui, Jing Sun, Liang Li
Chronic cerebral hypoperfusion (CCH) characterized by global cerebral ischemia is an important risk factor contributing to the development of dementia. MicroRNAs (miRNAs) play important roles in the cellular adaptation to long-term ischemia/hypoxia by turning off or on the expression of target genes. MiR-181c is widely expressed in the nervous system, and tripartite motif 2 (TRIM2) is one of its target genes. In this work, we had identified that progressive spatial memory deficiency was induced in the bilateral common carotid artery occlusion (2-VO) rat models...
December 8, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27924480/design-of-multimodal-small-molecules-targeting-mirnas-biogenesis-synthesis-and-in-vitro-evaluation
#2
Duc D Vo, Maria Duca
microRNAs (miRNAs) are emerging as novel biological targets for medicinal chemists to develop chemical tools for intracellular regulation. In this context, the discovery of small-molecule drugs targeting specific miRNAs and modulating their production or function represents a very promising approach that could be further developed for targeted therapy in miRNA-related pathologies. Here, we describe the design of multimodal small molecules as RNA ligands targeting DICER-mediated miRNA maturation. The synthesis and the biochemical evaluation as ligands of stem-loop-structured precursor microRNAs (pre-miRNAs) are reported...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27923225/integrin-%C3%AE-iib%C3%AE-3-dependent-erk-signaling-is-regulated-by-src-and-rho-kinases-in-both-leu33-and-pro33-polymorphic-isoforms
#3
Khon C Huynh, Thi-Hiep Nguyen, Dinh Chuong Pham, Huong T T Nguyen, Toi Van Vo, Marianna Gyenes, Volker R Stoldt
Platelet integrin αIIbβ3 possesses a Leu/Pro polymorphism at residue 33 (Leu33/HPA-1a or Pro33/HPA-1b). The Pro33 isoform has been suggested to exhibit prothrombotic features. αIIbβ3-expressing CHO (Chinese hamster ovary) cells on immobilized fibrinogen show activation of the MAP kinase family member ERK2, with an enhanced ERK2 activity in Pro33 cells compared to Leu33 cells. In our present work, we examined how the Leu/Pro polymorphism modulates the ERK2 activation stimulated by 2 differently triggered outside-in signalings...
December 7, 2016: Acta Haematologica
https://www.readbyqxmd.com/read/27920860/a-long-standing-external-iliac-artery-pseudoaneurysm-in-a-patient-with-a-history-of-a-failed-kidney-transplant
#4
Satyam Veean, Neil Patel, Daniel Lee, Hoang Vo, Eran Rotem
This is a case of a 66-year-old African American male with history of end stage renal disease due to polycystic disease and failed right kidney transplant. He presents with asymptomatic hematuria, and diagnostic angiography was performed which showed incidental anastomotic site pseudoaneurysm. Our patient had an unusual presentation of a pseudoaneurysm. Pseudoaneurysms associated with failed renal transplants are typically detected within weeks after transplantation and along with failure of the transplant...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27916562/cryobiological-parameters-of-multipotent-stromal-cells-obtained-from-different-sources
#5
L Lauterboeck, W F Wolkers, B Glasmacher
Stem cells are important for regenerative medicine mainly due to their multilineage differentiation capacity. However, the cells rapidly loose this capability during culturing. Cryopreservation preserves the differentiation potential of the cells, until they are needed. In this study, specific cell properties of multipotent stromal cells (MSCs), from the common marmoset monkey Callithrix jacchus MSCs derived from amnion (Am) and bone marrow (Bm) were studied in order to predict optimal cooling rates for cryopreservation...
December 1, 2016: Cryobiology
https://www.readbyqxmd.com/read/27916423/effect-of-ulinastatin-on-the-permeability-of-the-blood-brain-barrier-on-rats-with-global-cerebral-ischemia-reperfusion-injury-as-assessed-by-mri
#6
Ming Liu, Jie Shen, Fan Zou, Yunfeng Zhao, Bing Li, Mingxia Fan
The study was designed to evaluate the effect of ulinastatin on the permeability of the blood-brain barrier in rats with global cerebral ischemia/reperfusion injury using MRI. A total of 108 Wistar rats (240 g-280g) were randomly divided into three groups (n=36): sham group (S group), global cerebral ischemia/reperfusion model group (GCI/R group) and 10,000U/kg ulinastatin intervention group (U group). Fifty-four Wistar rats were used for MRI, and the rest were used for Evans Blue(EB)analysis. We used the Pulsinelli four-vessel occlusion (4-VO) model of global cerebral ischemia/reperfusion to investigate the integrity of the blood-brain barrier with Evans Blue (EB) staining at 15min after ischemia and at 6h (n=6), 24h (n=6), and 48h (n=6) after reperfusion to assess blood-brain barrier permeability with MRI...
December 1, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27911769/reductive-carboxylation-is-a-major-metabolic-pathway-in-the-retinal-pigment-epithelium
#7
Jianhai Du, Aya Yanagida, Kaitlen Knight, Abbi L Engel, Anh Huan Vo, Connor Jankowski, Martin Sadilek, Van Thi Bao Tran, Megan A Manson, Aravind Ramakrishnan, James B Hurley, Jennifer R Chao
The retinal pigment epithelium (RPE) is a monolayer of pigmented cells that requires an active metabolism to maintain outer retinal homeostasis and compensate for oxidative stress. Using (13)C metabolic flux analysis in human RPE cells, we found that RPE has an exceptionally high capacity for reductive carboxylation, a metabolic pathway that has recently garnered significant interest because of its role in cancer cell survival. The capacity for reductive carboxylation in RPE exceeds that of all other cells tested, including retina, neural tissue, glial cells, and a cancer cell line...
December 1, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27910368/airfoil-based-electromagnetic-energy-harvester-containing-parallel-array-motion-between-moving-coil-and-multi-pole-magnets-towards-enhanced-power-density
#8
Chung Ming Leung, Ya Wang, Wusi Chen
In this letter, the airfoil-based electromagnetic energy harvester containing parallel array motion between moving coil and trajectory matching multi-pole magnets was investigated. The magnets were aligned in an alternatively magnetized formation of 6 magnets to explore enhanced power density. In particular, the magnet array was positioned in parallel to the trajectory of the tip coil within its tip deflection span. The finite element simulations of the magnetic flux density and induced voltages at an open circuit condition were studied to find the maximum number of alternatively magnetized magnets that was required for the proposed energy harvester...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27903903/novel-roles-of-hp1a-and-mcm10-in-dna-replication-genome-maintenance-and-photoreceptor-cell-differentiation
#9
Nicole Vo, Dang Ngoc Anh Suong, Natsuki Yoshino, Hideki Yoshida, Sue Cotterill, Masamitsu Yamaguchi
Both Mcm10 and HP1a are known to be required for DNA replication. However, underlying mechanism is not clarified yet especially for HP1. Knockdown of both HP1a and Mcm10 genes inhibited the progression of S phase in Drosophila eye imaginal discs. Proximity Ligation Assay (PLA) demonstrated that HP1a is in close proximity to DNA replication proteins including Mcm10, RFC140 and DNA polymerase ϵ 255 kDa subunit in S-phase. This was further confirmed by co-immunoprecipitation assay. The PLA signals between Mcm10 and HP1a are specifically observed in the mitotic cycling cells, but not in the endocycling cells...
November 29, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27902336/characterization-of-the-banana-streak-virus-capsid-protein-and-mapping-of-the-immunodominant-continuous-b-cell-epitopes-to-the-surface-exposed-n-terminus
#10
Jenny Vo, Paul Campbell, Nur N Mahfuzc, Ras Ramli, Daniel Pagendam, Ross Barnard, Andrew Geering
This study identified the structural proteins of two badnavirus species, Banana streak MY virus (BSMYV) and Banana streak OL virus (BSOLV), and mapped the distribution of continuous B-cell epitopes. Two different CP isoforms of about 44 and 40 kDa (CP1 and CP2) and the virion-associated protein (VAP) were consistently associated with purified virions. For both viral species, the N-terminus of CP2 was successfully sequenced by Edman degradation but that of CP1 was chemically blocked. De novo peptide sequencing of tryptic digests suggested that CP1 and CP2 derive from the same region of the P3 polyprotein but differ in the length of either the N- or C-terminus...
October 24, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27893783/role-of-pten-in-oxidative-stress-and-dna-damage-in-the-liver-of-whole-body-pten-haplodeficient-mice
#11
Ezgi Eyluel Bankoglu, Oliver Tschopp, Johannes Schmitt, Philipp Burkard, Daniel Jahn, Andreas Geier, Helga Stopper
Type 2 diabetes (T2DM) and obesity are frequently associated with non-alcoholic fatty liver disease (NAFLD) and with an elevated cancer incidence. The molecular mechanisms of carcinogenesis in this context are only partially understood. High blood insulin levels are typical in early T2DM and excessive insulin can cause elevated reactive oxygen species (ROS) production and genomic instability. ROS are important for various cellular functions in signaling and host defense. However, elevated ROS formation is thought to be involved in cancer induction...
2016: PloS One
https://www.readbyqxmd.com/read/27890559/fluoxetine-and-its-active-metabolite-norfluoxetine-disrupt-estrogen-synthesis-in-a-co-culture-model-of-the-feto-placental-unit
#12
Andrée-Anne Hudon Thibeault, Laetitia Laurent, Sung Vo Duy, Sébastien Sauvé, Patrick Caron, Chantal Guillemette, J Thomas Sanderson, Cathy Vaillancourt
The effects of fluoxetine, one of the most prescribed selective serotonin-reuptake inhibitors (SSRIs) during pregnancy, and its active metabolite norfluoxetine were studied on placental aromatase (CYP19) and feto-placental steroidogenesis Fluoxetine did not alter estrogen secretion in co-culture of fetal-like adrenocortical (H295R) and trophoblast-like (BeWo) cells used as a model of the feto-placental unit, although it induced CYP19 activity, apparently mediated by the serotonin (5-HT) 2A receptor/PKC signalling pathway...
November 24, 2016: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/27889516/lenalidomide-enhances-the-function-of-dendritic-cells-generated-from-patients-with-multiple-myeloma
#13
Manh-Cuong Vo, Truc Anh-NguyenThi, Hyun-Ju Lee, Thanh-Nhan Nguyen-Pham, Thangaraj Jaya Lakshmi, Sung-Hoon Jung, Hyeoung-Joon Kim, Je-Jung Lee
Lenalidomide (LEN) has been used as an immunomodulatory drug with direct and indirect anti-tumor effects. In this study, we evaluated the effect of LEN on the differentiation, maturation, and function of dendritic cells (DCs) in patients with multiple myeloma (MM) in vitro. Various doses of LEN were added after the monocytes had differentiated into immature DCs (imDCs) and activated into mature DCs (mDCs). LEN (5 μg/mL) was the optimal concentration to promote differentiation and maturation of DCs. imDCs treated with LEN showed enhanced endocytic capacity...
November 23, 2016: Experimental Hematology
https://www.readbyqxmd.com/read/27879111/modelling-chemistry-and-biology-after-implantation-of-a-drug-eluting-stent-part-i-drug-transport
#14
Tuoi Vo, William Lee, Adam Peddle, Martin Meere
Drug-eluting stents have been used widely to prevent restenosis of arteries following percutaneous balloon angioplasty. Mathematical modelling plays an important role in optimising the design of these stents to maximise their efficiency. When designing a drug-eluting stent system, we expect to have a sufficient amount of drug being released into the artery wall for a sufficient period to prevent restenosis. In this paper, a simple model is considered to provide an elementary description of drug release into artery tissue from an implanted stent...
April 1, 2017: Mathematical Biosciences and Engineering: MBE
https://www.readbyqxmd.com/read/27878546/investigation-of-antibiotics-in-health-care-wastewater-in-ho-chi-minh-city-vietnam
#15
Thi-Dieu-Hien Vo, Xuan-Thanh Bui, Ngoc-Dan-Thanh Cao, Vinh-Phuc Luu, Thanh-Tin Nguyen, Bao-Trong Dang, Minh-Quan Thai, Dinh-Duc Nguyen, Thanh-Son Nguyen, Quoc-Tuc Dinh, Thanh-Son Dao
Hospital wastewater contains huge amounts of hazardous pollutants which are being discharged daily to environment with or without treatment. Antibiotics were among the important group of pharmaceuticals considered as a potential source of health risk for human and other living creatures. Although the investigations about the existence of antibiotics in hospital wastewater have gained concern for researchers in many countries, there is only one research conducted in Hanoi-Vietnam. Hence, in this study, investigations have been done to fulfill the requirement of real situation in Vietnam by accomplishing survey for 39 health care facilities in Ho Chi Minh City...
December 0: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27871088/structure-of-photosystem-ii-and-substrate-binding-at-room-temperature
#16
Iris D Young, Mohamed Ibrahim, Ruchira Chatterjee, Sheraz Gul, Franklin D Fuller, Sergey Koroidov, Aaron S Brewster, Rosalie Tran, Roberto Alonso-Mori, Thomas Kroll, Tara Michels-Clark, Hartawan Laksmono, Raymond G Sierra, Claudiu A Stan, Rana Hussein, Miao Zhang, Lacey Douthit, Markus Kubin, Casper de Lichtenberg, Long Vo Pham, Håkan Nilsson, Mun Hon Cheah, Dmitriy Shevela, Claudio Saracini, Mackenzie A Bean, Ina Seuffert, Dimosthenis Sokaras, Tsu-Chien Weng, Ernest Pastor, Clemens Weninger, Thomas Fransson, Louise Lassalle, Philipp Bräuer, Pierre Aller, Peter T Docker, Babak Andi, Allen M Orville, James M Glownia, Silke Nelson, Marcin Sikorski, Diling Zhu, Mark S Hunter, Thomas J Lane, Andy Aquila, Jason E Koglin, Joseph Robinson, Mengning Liang, Sébastien Boutet, Artem Y Lyubimov, Monarin Uervirojnangkoorn, Nigel W Moriarty, Dorothee Liebschner, Pavel V Afonine, David G Waterman, Gwyndaf Evans, Philippe Wernet, Holger Dobbek, William I Weis, Axel T Brunger, Petrus H Zwart, Paul D Adams, Athina Zouni, Johannes Messinger, Uwe Bergmann, Nicholas K Sauter, Jan Kern, Vittal K Yachandra, Junko Yano
Light-induced oxidation of water by photosystem II (PS II) in plants, algae and cyanobacteria has generated most of the dioxygen in the atmosphere. PS II, a membrane-bound multi-subunit pigment protein complex, couples the one-electron photochemistry at the reaction centre with the four-electron redox chemistry of water oxidation at the Mn4CaO5 cluster in the oxygen-evolving complex (OEC). Under illumination, the OEC cycles through five intermediate S-states (S0 to S4), in which S1 is the dark-stable state and S3 is the last semi-stable state before O-O bond formation and O2 evolution...
November 21, 2016: Nature
https://www.readbyqxmd.com/read/27865091/analysis-of-voluntary-opening-ottobock-hook-and-hosmer-hook-for-upper-limb-prosthetics-a-preliminary-study
#17
Nur Afiqah Hashim, Nasrul Anuar Bin Abd Razak, Hossein Gholizadeh, Noor Azuan Abu Osman
There are a number of prosthetic terminal devices which offer functional restoration to individuals with upper limb deficiencies. Hosmer and Ottobock are major commercial hook providers for prosthetic terminal devices. The concern of this paper is to analyse the voluntary opening (VO) Ottobock model 10A18 and Hosmer model 99P hooks (one band) during opening operation and to find out favourable features in the design. Two tests were conducted to analyse the performance of both hooks. The first test used a simple bench tool to investigate cable excursion and hook opening angle and the second test used force sensor to find out the force supplied at a different hook opening angle...
November 19, 2016: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/27863301/antioxidant-and-anticancer-effects-and-bioavailability-studies-of-the-flavonoid-baicalin-and-its-oxidovanadium-iv-complex
#18
Juan J Martínez Medina, Luciana G Naso, Ana L Pérez, Alberto Rizzi, Evelina G Ferrer, Patricia A M Williams
Based on the known antioxidant effect of flavonoids, baicalin (baic) found in roots of Scutellaria has been selected. Its coordination complex with the oxidovanadium(IV) cation, Na4[VO(baic)2].6H2O (V(IV)O(baic)), was synthesized at pH9 in ethanol and characterized by physicochemical methods. Spectrophotometric studies at pH9 showed a ligand: metal stoichiometry of 2:1. By vibrational spectroscopy a coordination mode through the cis 5-OH and 6-OH deprotonated groups is inferred. EPR spectroscopy shows an environment of four aryloxide (ArO(-)) groups in the equatorial plane of the VO moiety, both in solution and in the solid complex...
November 5, 2016: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/27863095/new-mechanism-for-the-reduction-of-vanadyl-acetylacetonate-to-vanadium-acetylacetonate-for-room-temperature-flow-batteries
#19
Leon Shaw, Jack Shamie, Caihong Liu, Vincent Sprenkle
In this study, a new mechanism for the reduction of vanadyl acetylacetonate, VO(acac)2, to vanadium acetylacetonate, V(acac)3, is introduced. V(acac)3 has been studied for use in redox flow batteries for some time, however contamination by moisture leads to the formation of VO(acac)2. In previous work, once this transformation occurs, it is no longer reversible because there is a requirement of extreme low potentials for the reduction to occur. Here, we propose that with the presence of excess acetylacetone (Hacac) and free protons (H+) the reduction can take place between 2...
November 15, 2016: ChemSusChem
https://www.readbyqxmd.com/read/27862127/the-impact-of-dsm-5-on-eating-disorder-diagnoses
#20
Megen Vo, Erin C Accurso, Andrea B Goldschmidt, Daniel Le Grange
OBJECTIVE: Eating disorder diagnostic criteria were revised from the fourth to the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV and -5, respectively). This study examines the impact of these revisions on rates of eating disorder diagnoses in treatment-seeking youth. METHOD: Participants were 651 youth, ages 7-18 years, presenting to an outpatient eating disorders program who met criteria for a DSM-IV eating disorder diagnosis on intake...
November 12, 2016: International Journal of Eating Disorders
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