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https://www.readbyqxmd.com/read/28448534/intense-light-elicited-upregulation-of-mir-21-facilitates-glycolysis-and-cardioprotection-through-per2-dependent-mechanisms
#1
Colleen Marie Bartman, Yoshimasa Oyama, Kelley Brodsky, Ludmila Khailova, Lori Walker, Michael Koeppen, Tobias Eckle
A wide search for ischemic preconditioning (IPC) mechanisms of cardioprotection identified the light elicited circadian rhythm protein Period 2 (Per2) to be cardioprotective. Studies on cardiac metabolism found a key role for light elicited Per2 in mediating metabolic dependence on carbohydrate metabolism. To profile Per2 mediated pathways following IPC of the mouse heart, we performed a genome array and identified 352 abundantly expressed and well-characterized Per2 dependent micro RNAs. One prominent result of our in silico analysis for cardiac Per2 dependent micro RNAs revealed a selective role for miR-21 in the regulation of hypoxia and metabolic pathways...
2017: PloS One
https://www.readbyqxmd.com/read/28431163/an-evaluation-of-the-human-relevance-of-the-lung-tumors-observed-in-female-mice-treated-with-permethrin-based-on-mode-of-action
#2
Tomoya Yamada, Miwa Kondo, Kaori Miyata, Keiko Ogata, Masahiko Kushida, Kayo Sumida, Satoshi Kawamura, Thomas G Osimitz, Brian G Lake, Samuel M Cohen
Permethrin increased the incidence of bronchiolo-alveolar adenomas in female mice but not male mice or female or male rats. Studies were conducted to determine whether permethrin has mitogenic activity in Club cells in mouse lung as the basis for the mode of action (MOA) for the lung adenoma induction. Several short term experiments focusing on time-course, dose-response, reversibility, sex difference, strain difference, and species difference were evaluated for Club cell proliferation and morphology. The findings demonstrated that permethrin slightly and continuously enhanced Club cell proliferation at tumor-associated dose levels in female mice, but did not increase proliferation in male mice or in female rats...
April 18, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28427003/ce-method-for-the-in-process-control-of-the-synthesis-of-active-substances-conjugated-with-gold-nanoparticles
#3
Wioleta Maruszak, Elżbieta U Stolarczyk, Krzysztof Stolarczyk
A fast capillary electrophoresis method was developed and validated for the in-process control (IPC) of the synthesis of active substances (APIs) with gold nanoparticles (AuNPs). The capillary electrophoresis method was key to ensure that the reaction step conducted in order to obtain AuNP and API conjugates will produce the expected product without the presence of free APIs, which is a critical parameter determining the quality of the synthetic material. Capillary electrophoresis was performed using uncoated fused-silica capillaries with the effective length of 40cm, 50μm i...
April 10, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28414437/phenolic-content-and-antioxidant-activity-during-the-development-of-brookfield-and-mishima-apples
#4
Mayara C Stanger, Cristiano A Steffens, Cristina Soethe, Marcelo A Moreira, Cassandro V T do Amarante
The aim of this study was to characterize the changes in the contents of total (TPC) and individual (IPC) phenolic compounds, the total antioxidant activity (TAA) in the peel and pulp, and total anthocyanins (TAN) in the peel during the development of the fruits of 'Brookfield' and 'Mishima' apple trees. 'Brookfield' apples were harvested from the 49th to the 138th days after full bloom (DAFB) and 'Mishima' apples from the 45th to the 172th DAFB. In the pulp, the IPC, TPC, and TAA rapidly reduced at 75 and 79 DAFB for the 'Brookfield' and 'Mishima' apples, respectively, and then remained constant until commercial maturity...
April 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28413492/immunogenicity-of-insulin-producing-cells-derived-from-human-umbilical-cord-mesenchymal-stem-cells
#5
Xiao-Fei Yang, Tao Chen, Li-Wei Ren, Lu Yang, Hui Qi, Fu-Rong Li
Mesenchymal stem cells (MSCs) have been considered as hypo-immunogenic and immunosuppressive. However, a thorough understanding of the immunological properties after MSC differentiation in vitro and in vivo has not been reached. We asked whether it would be immunogenic after differentiation or influenced by the immune microenvironment after transplantation. In different disease models, the immunological changes of MSCs after differentiation greatly varied, with contradicting results. In order to clarify this, we used a modified four-step induction method to induce human umbilical cord MSCs (hUCMSCs) to differentiate into insulin-producing cells (IPCs), and investigate the immunological changes after differentiation and immune reactions after transplantation into diabetic mice...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28408349/early-effects-of-prolonged-cardiac-arrest-and-ischemic-postconditioning-during-cardiopulmonary-resuscitation-on-cardiac-and-brain-mitochondrial-function-in-pigs
#6
Timothy R Matsuura, Jason A Bartos, Adamantios Tsangaris, Kadambari Chandra Shekar, Matthew D Olson, Matthias L Riess, Martin Bienengraeber, Tom P Aufderheide, Robert W Neumar, Jennifer N Rees, Scott H McKnite, Anna E Dikalova, Sergey I Dikalov, Hunter F Douglas, Demetris Yannopoulos
Background Out-of-hospital cardiac arrest (CA) is a prevalent medical crisis resulting in severe injury to the heart and brain and an overall survival of less than 10 percent. Mitochondrial dysfunction is predicted to be a key determinant of poor outcomes following prolonged CA. However, the onset and severity of mitochondrial dysfunction during CA and cardiopulmonary resuscitation (CPR) is not fully understood. Ischemic postconditioning (IPC), controlled pauses during the initiation of CPR, has been shown to improve cardiac function and neurologically favorable outcomes after fifteen minutes of CA...
April 10, 2017: Resuscitation
https://www.readbyqxmd.com/read/28403348/neonatal-necrotizing-enterocolitis-rat-model-attenuated-by-a-remote-ischemic-preconditioning-in-the-pregnant
#7
Rúdnei de Oliveira Luciano Gomes, Ricardo Artigiani, José de Freitas Guimarães, Adriana Porto Nunes, Edna Frasson de Souza Montero, José Luiz Martins
Purpose: To evaluate the effect of remote ischemic preconditioning (r-IPC) administered to pregnant rats, in the ileum of newborn rats subjected to hypoxia and reoxygenation. Methods: We used three pregnant rats and their newborn rats distributed in three groups: 1) Control (C) - Newborn rats born from a pregnant rat which did not undergo any intervention; 2) Hypoxia-Reoxygenation (H/R) - Newborn rats born from a pregnant rat which did not undergo any intervention, and were subjected to hypoxia-reoxygenation; 3) Remote Ischemic Preconditioning (r-IPC) - newborn rats born from a pregnant rat which was subjected to remote ischemic preconditioning twenty-four hours before giving birth and the newborn rats were subjected to hypoxia-reoxygenation...
March 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28402377/interrelationship-between-tio2-nanoparticle-size-and-kind-size-of-dyes-in-the-mechanism-and-conversion-efficiency-of-dye-sensitized-solar-cells
#8
Pooya Tahay, Meisam Babapour Gol Afshani, Ali Alavi, Zahra Parsa, Nasser Safari
In order to provide a comprehensive investigation of TiO2 nanoparticle size in relation with different dye types in DSSCs, three sizes of TiO2 nanoparticles and two different dye types including a porphyrin dye (T2) and a ruthenium dye (N3) were synthesized. Steady state current-voltage (J-V) characteristics were investigated for the fabricated DSSCs and the results demonstrated that the optimum TiO2 nanoparticle size changed with the dye type. The obtained J-V data were interpreted by cyclic voltammetry, UV-visible absorption spectroscopy, BET measurement, DFT calculation, IPCE measurement and impedance spectroscopy...
April 12, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28397402/micrornas-can-effectively-induce-formation-of-insulin-producing-cells-from-mesenchymal-stem-cells
#9
Chunyu Bai, Yuhua Gao, Xiangchen Li, Kunfu Wang, Hui Xiong, Zhiqiang Shan, Ping Zhang, Wenjie Wang, Weijun Guan, Yuehui Ma
MicroRNAs regulate insulin secretion, pancreatic development and beta cell differentiation. However, the function of microRNAs in the formation of insulin-producing cells (IPCs) from adult stem cells is poorly understood. We examine the microRNA expression profile in nestin-positive umbilical cord-derived mesenchymal stem cells (N-UCMSCs) and nestin-positive pancreatic mesenchymal stem cells using a deep sequencing approach. We also selected specific microRNAs for overexpression in N-UCMSCs and found that miR-375 and miR-26a induced IPCs differentiation from N-UCMSCs by downregulating target genes including mtpn, sox6, bhlhe22 and ccnd1...
April 10, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28386203/intervention-action-of-total-flavonoids-from-root-of-ilex-pubescens-in-cerebral-ischemic-tolerance-with-blood-stasis
#10
Mingsan Miao, Lihua Cao, Kun Xu, Weiyun Xin, Yan Zheng
The aim of this study was to explore the action characters of total flavonoids from MDQ on cerebral ischemic tolerance with blood stasis. Fully understanding the mechanism of action of total flavonoids from MDQ is helpful for the development of new drugs and the utilization of resources. Male Wistar rat model of blood stasis was established by injecting dexamethasone into the intramuscular side of the thigh. Then they were given related drugs via an intragastric administration for a successive 10 days. After 7 days, the following occurred: firstly, the method of blocking the bilateral common carotid artery (CCA) was used for 10 min, followed by a restoration of perfusion...
March 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28385600/mesenchymal-stem-cells-and-differentiated-insulin-producing-cells-are-new-horizons-for-pancreatic-regeneration-in-type-i-diabetes-mellitus
#11
Ayat M Domouky, Ashraf S Hegab, Amal Al-Shahat, Nermin Raafat
BACKGROUND: Diabetes mellitus has become the third human killer following cancer and cardiovascular disease. Millions of patients, often children, suffer from type 1 diabetes (T1D). Stem cells created hopes to regenerate damaged body tissues and restore their function. AIM: This work aimed at clarifying and comparing the therapeutic potential of differentiated and non-differentiated mesenchymal stem cells (MSCs) as a new line of therapy for T1D. METHODS: 40 Female albino rats divided into group I (control): 10 rats and group II (diabetic), III and IV, 10 rats in each, were injected with streptozotocin (50mg/kg body weight)...
April 3, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28383532/the-immature-platelet-fraction-creating-neonatal-reference-intervals-and-using-these-to-categorize-neonatal-thrombocytopenias
#12
B C MacQueen, R D Christensen, E Henry, A M Romrell, T J Pysher, S T Bennett, M C Sola-Visner
OBJECTIVE: The immature platelet fraction (IPF) is a laboratory measurement analogous to the reticulocyte count, but reflecting the thrombopoietic state. Similar to a reticulocyte count, it can be expressed as a percent (IPF%=percent of platelets that are immature) or as an absolute number per μl blood; the immature platelet count (IPC=IPF% × platelets per μl of blood). STUDY DESIGN: Using a retrospective analysis of de-identified data from non-thrombocytopenic neonates, we created reference intervals for IPF% and IPC...
April 6, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28381443/effects-of-injectable-progestogen-contraception-versus-the-copper-intrauterine-device-on-hiv-acquisition-sub-study-of-a-pragmatic-randomised-controlled-trial
#13
G Justus Hofmeyr, Mandisa Singata-Madliki, Theresa A Lawrie, Eduardo Bergel, Marleen Temmerman
BACKGROUND: Evidence from observational studies suggests an increased risk of HIV acquisition among women using depot medroxyprogesterone acetate (DMPA) contraception. METHODS: Within the context of a South African programme to increase women's access to the intrauterine contraceptive device (IUD), we conducted a pragmatic, open-label, parallel-arm, randomised controlled trial (RCT) of the IUD versus injectable progestogen contraception (IPC) at two South African hospitals...
April 5, 2017: Journal of Family Planning and Reproductive Health Care
https://www.readbyqxmd.com/read/28379686/reactive-nanoparticles-compatibilized-immiscible-polymer-blends-synthesis-of-reactive-sio2-with-long-poly-methyl-methacrylate-chains-and-the-in-situ-formation-of-janus-sio2-nanoparticles-anchored-exclusively-at-the-interface
#14
Hengti Wang, Zhiang Fu, Xuewen Zhao, Yongjin Li, Jingye Li
The exclusive location of compatibilizers at the interface of immiscible binary polymer blends to bridge the neighboring phases is the most important issue for fabricating desirable materials with synergistic properties. However, the positional stability of the compatibilizers at the interface remains a challenge in both scientific and technical points of view due to the intrinsic flexibility of compatibilizer molecules against aggressive processing conditions. Herein, taking the typical immiscible poly vinylidene fluoride (PVDF)/polylactic acid (PLLA) blend as an example, we demonstrate a novel approach, termed as the interfacial nanoparticle compatibilization (IPC) mechanism, to overcome the challenges by packing nanoparticles thermodynamically at the interface through melt reactive blending...
April 11, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28372856/fly-rounds-validation-and-pilot-of-a-novel-epidemiologic-tool-to-guide-infection-control-response-to-an-infestation-of-sarcophagidae-flies-in-a-community-hospital-s-perioperative-department
#15
Jonathan M Schouest, Leah Heinrich, Barbara Nicholas, Frederick Drach
During an outbreak of Sarcophagidae, or flesh flies, in a community hospital's perioperative department, the infection prevention and control (IPC) department developed, validated, and piloted a novel epidemiologic tool to track hourly fly prevalence by room. Interrater reliability of the tool was measured as 0.88 and hourly point prevalence counts were superimposed on floor plans to create heat maps. Such surveillance tools allowed more timely decision making in conjunction with the operations of the hospital incident command system...
March 31, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28371293/gap-ganp-heterojunctions-for-efficient-solar-driven-water-oxidation
#16
Alireza Kargar, Supanee Sukrittanon, Chang Zhou, Yun Goo Ro, Xiaoqing Pan, Shadi A Dayeh, Charles W Tu, Sungho Jin
The growth and characterization of an n-GaP/i-GaNP/p(+) -GaP thin film heterojunction synthesized using a gas-source molecular beam epitaxy (MBE) method, and its application for efficient solar-driven water oxidation is reported. The TiO2 /Ni passivated n-GaP/i-GaNP/p(+) -GaP thin film heterojunction provides much higher photoanodic performance in 1 m KOH solution than the TiO2 /Ni-coated n-GaP substrate, leading to much lower onset potential and much higher photocurrent. There is a significant photoanodic potential shift of 764 mV at a photocurrent of 0...
March 31, 2017: Small
https://www.readbyqxmd.com/read/28371165/capturing-irradiation-with-nano-antennae-plasmon-induced-enhancement-of-photoelectrolysis
#17
Layal Daccache, Sven Zeller, Timo Jacob
In solving the energy challenge of solar irradiation's inconsistency, a desirable approach is mimicking nature's photosynthesis by collecting and storing solar energy via water splitting. TiO2 is a promising candidate, a wide-gap semiconductor with low cost, high efficiencies in the UV region and photo-stability. Its shortcomings in the visible spectrum can be improved via band gap engineering, mainly co-catalyst doping, thereof Au nanoparticles. In contrast, we deposit a structured semiconductor on a plasmonic-active co-catalyst: we reverse the species order with respect to illumination and achieve a patterned structure for both species in which TiO2 pillars are grown on a Raman active Au substrate...
March 31, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28370575/synthesis-of-poly-%C3%AE-s-2-methylbutyl-l-glutamate-and-poly-%C3%AE-s-2-methylbutyl-d-glutamate-and-their-use-as-enantiodiscriminating-alignment-media-in-nmr-spectroscopy
#18
Stefanie Hansmann, Volker Schmidts, Christina Thiele
Lyotropic liquid crystalline (LLC) phases of polyglutamic acid derivatives, like poly-γ-benzyl-L-glutamate 1 (PBLG), are suitable alignment media for NMR spectroscopy in organic structure elucidation. Their helical structure is responsible for enantiodiscrimination. As part of our ongoing investigations concerning the alignment mechanism(s) of these systems, we were wondering, whether an additional chiral center in the side chain could improve enantiodiscrimination as compared to the helical polymer with an achiral side chain...
March 30, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28370534/topical-treatment-of-psoriasis-questionnaire-results-on-topical-therapy-accessibility-and-influence-of-body-surface-area-on-usage
#19
L Iversen, M M Lange, R Bissonette, A V E Carvalho, P C van de Kerkhof, B Kirby, C E Kleyn, C W Lynde, J M van der Walt, J J Wu
BACKGROUND: Topical treatment of mild to moderate psoriasis is first line treatment and exhibits varying degrees of success across patient groups. Key factors influencing treatment success are physician topical treatment choice (high efficacy, low adverse events) and strict patient adherence. Currently, no formalized, international consensus guidelines exist to direct optimal topical treatment, although many countries have national guidelines. OBJECTIVE: To describe and analyze cross-regional variations in the use and access of psoriasis topical therapies...
April 1, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28360245/listening-to-paediatric-primary-care-nurses-a-qualitative-study-of-the-potential-for-interprofessional-oral-health-practice-in-six-federally-qualified-health-centres-in-massachusetts-and-maryland
#20
Judith Bernstein, Christina Gebel, Clemencia Vargas, Paul Geltman, Ashley Walter, Raul Garcia, Norman Tinanoff
OBJECTIVES: To explore the opportunities for interprofessional collaboration (IPC) to improve paediatric oral health in federally qualified health centres (FQHCs), to identify challenges to IPC-led integration of oral health prevention into the well-child visit and to suggest strategies to overcome barriers. SAMPLE: Nurse managers (NMs), nurse practitioners (NPs), paediatric clinical staff and administrators in six FQHCs in two states were interviewed using a semistructured format...
March 29, 2017: BMJ Open
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