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https://www.readbyqxmd.com/read/27922138/mitomycin-c-treated-human-induced-pluripotent-stem-cells-as-a-safe-delivery-system-of-gold-nanorods-for-targeted-photothermal-therapy-of-gastric-cancer
#1
Meng Yang, Yanlei Liu, Wenxiu Hou, Xiao Zhi, Chunlei Zhang, Xinquan Jiang, Fei Pan, Yuming Yang, Jian Ni, Daxiang Cui
Human-induced pluripotent stem cells (iPS) possess an intrinsic tumor tropism ability. However, iPS cells are impeded in clinical applications of tumor therapy due to the formation of teratomas and their survival in normal organs such as the liver, lungs, spleen and kidneys. Mitomycin C (MMC) can overcome this limitation by suppressing iPS proliferation. Herein, we fabricated a safe delivery system of iPS cells treated with MMC loading with gold nanorods (AuNRs) for the targeted photothermal treatment of gastric cancer...
December 6, 2016: Nanoscale
https://www.readbyqxmd.com/read/27920895/organosilane-functionalization-of-nanostructured-indium-tin-oxide-films
#2
R Pruna, F Palacio, M Martínez, O Blázquez, S Hernández, B Garrido, M López
Fabrication and organosilane-functionalization and characterization of nanostructured ITO electrodes are reported. Nanostructured ITO electrodes were obtained by electron beam evaporation, and a subsequent annealing treatment was selectively performed to modify their crystalline state. An increase in geometrical surface area in comparison with thin-film electrodes area was observed by atomic force microscopy, implying higher electroactive surface area for nanostructured ITO electrodes and thus higher detection levels...
December 6, 2016: Interface Focus
https://www.readbyqxmd.com/read/27920480/comparison-of-multichannel-intraluminal-impedance-ph-monitoring-and-reflux-scintigraphy-in-pediatric-patients-with-suspected-gastroesophageal-reflux
#3
Nuray Uslu Kızılkan, Murat Fani Bozkurt, Inci Nur Saltık Temizel, Hülya Demir, Aysel Yüce, Biray Caner, Hasan Özen
AIM: To evaluate the agreement of multichannel intraluminal impedance-pH monitoring (MII-pHM) and gastroesophageal reflux scintigraphy (GES) for the diagnosis of gastroesophageal reflux disease. METHODS: Seventy-five consecutive patients with suspected gastroesophageal reflux disease (GERD) underwent 24-h combined MII-pHM recording and one hour radionuclide scintigraphy during the course of the MII-pHM study. Catheters with 6 impedance channels and 1 pH sensor were placed transnasally...
November 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27920345/nurse-bullying-impact-on-nurses-health
#4
Penny A Sauer, Thomas P McCoy
Workplace bullying has been experienced by 27% to 80% of nurses who have participated in studies. Bullying behaviors negatively impact the health of nurses. This study examined whether nurses' resilience had an impact on the effects of bullying on the nurse's health. This cross-sectional descriptive study surveyed licensed registered nurses in one state. The sample (N = 345) was predominately female (89%) and Caucasian (84%), with an average age of 46.6 years. In this sample, 40% of nurses were bullied. Higher incidence of bullying was associated with lower physical health scores (p = ...
December 5, 2016: Western Journal of Nursing Research
https://www.readbyqxmd.com/read/27919940/vitamin-d-and-myofibroblasts-in-fibrosis-and-cancer-at-cross-purposes-with-tgf-%C3%AE-smad-signaling
#5
REVIEW
Shraga Shany, Ina Sigal-Batikoff, Sergio Lamprecht
The multifaceted involvement of the active vitamin D metabolite 1,25-dihydroxyvitamin D3 (henceforth referred to by the synonyms 1,25(OH)2D3, calcitriol or vitamin D) in blunting the growth of cancer cells is amply recognized. In this review we focused our attention on the cross-talk between 1,25 (OH)2D3 and the tumor microenvironment (TME), signaling out stromal cancer-associated fibroblasts (CAFs), the most abundant TME population, as a target for calcitriol anticancer action. In view of the commonality of the phenotypic signature in myofibroblasts, resident in the cancer stroma and in non-neoplastic fibrotic loci, we examined modes of action of vitamin D in non-neoplastic chronic diseases and in cancer to assess mechanistic similarities and divergences...
December 2016: Anticancer Research
https://www.readbyqxmd.com/read/27919603/preparation-of-quantum-dots-cdte-decorated-graphene-composite-for-sensitive-detection-of-uric-acid-and-dopamine
#6
Hong-Wei Yu, Jing-Hui Jiang, Ze Zhang, Guang-Cai Wan, Zhi-Yong Liu, Dong Chang, Hong-Zhi Pan
The assembly of quantum dots (QDs) in a simply method opens up opportunities to obtain access to the full potential of assembled QDs by virtue of the collective properties of the ensembles. In this study, quantum dots CdTe and graphene (Gr) nanocomposite was constructed for the simultaneous determination of uric acid (UA) and dopamine (DA). The CdTe QDs-Gr nanocomposite was prepared by ultrasonication and was characterized with microscopic techniques. The nanocomposite modified electrode was characterized by cyclicvoltammetry (CV), differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS)...
December 2, 2016: Analytical Biochemistry
https://www.readbyqxmd.com/read/27919469/dangerous-intoxication-after-oral-ingestion-of-poppers-alkyl-nitrites-two-case-reports
#7
Stéphanie Pain, François Chavant, Bernard Fauconneau, Jérémy Guenezan, Nicolas Marjanovic, Jean-Yves Lardeur, Bertrand Brunet, Marie-Christine Perault-Pochat
"Poppers" (alkyl nitrites) were made famous in the 1960s as a party drug and are still used today. They are highly volatile, sweet-smelling liquids commonly administered by inhalation. However, sometimes, they can be consumed by oral ingestion resulting in greater toxicity. They are used for their vasodilator effects but these volatile nitrites can also cause methemoglobinemia. Methemoglobinemia is a rare pathology that results from the oxidation of iron in the hemoglobin molecule. Oxidation of iron switches it from the ferrous to the ferric state and impedes the ability of hemoglobin to carry oxygen...
December 2, 2016: Thérapie
https://www.readbyqxmd.com/read/27919271/prospective-associations-of-meat-consumption-during-childhood-with-measures-of-body-composition-during-adolescence-results-from-the-giniplus-and-lisaplus-birth-cohorts
#8
Carla Harris, Anette Buyken, Andrea von Berg, Dietrich Berdel, Irina Lehmann, Barbara Hoffmann, Sibylle Koletzko, Berthold Koletzko, Joachim Heinrich, Marie Standl
BACKGROUND: Higher meat and protein intakes have been associated with increased body weight in adults, but studies evaluating body composition are scarce. Furthermore, our knowledge in adolescents is limited. This study aimed to investigate the prospective associations of intakes of different meat types, and their respective protein contents during childhood, with body composition during adolescence. METHODS: Dietary (using food frequency questionnaires) and body composition (measured by bioelectrical impedance) data were collected from the 10- and 15-year follow-up assessments respectively, of the GINIplus and LISAplus birth cohort studies...
December 5, 2016: Nutrition Journal
https://www.readbyqxmd.com/read/27919238/an-equity-analysis-of-utilization-of-health-services-in-afghanistan-using-a-national-household-survey
#9
Christine Kim, Khwaja Mir Ahad Saeed, Ahmad Shah Salehi, Wu Zeng
BACKGROUND: Afghanistan has made great strides in the coverage of health services across the country but coverage of key indicators remains low nationally and whether the poorest households are accessing these services is not well understood. METHODS: We analyzed the Afghanistan Mortality Survey 2010 on utilization of inpatient and outpatient care, institutional delivery and antenatal care by wealth quintiles. Concentration indexes (CIs) were generated to measure the inequality of using the four services...
December 5, 2016: BMC Public Health
https://www.readbyqxmd.com/read/27918931/effectiveness-of-an-educational-intervention-the-encourage-autonomous-self-enrichment-program-in-patients-with-chronic-kidney-disease-a-randomized-controlled-trial
#10
Hiroko Joboshi, Michiyo Oka
BACKGROUND: Self-management is an important step toward preventing and impeding the progression of chronic kidney disease. However, patients with chronic kidney disease may have few or no subjective symptoms and therefore might consider self-management to be unnecessary. Effective support and encouragement of self-management in patients with chronic kidney disease is therefore required. OBJECTIVES: This study tested the effectiveness of the Encourage Autonomous Self-Enrichment patient education program, which supports patient autonomy and intrinsic motivations with the aim of improving self-efficacy and sustaining self-management, on perceived self-efficacy, self-management behaviors, and physiological endpoints (blood pressure and renal function parameters) in patients with chronic kidney disease...
November 22, 2016: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/27917773/mutations-of-mtdna-polymerase-%C3%AE-and-hyperlactataemia-in-the-hiv-infected-zulu-population-of-south-africa
#11
D B A Ojwach, C Aldous, P Kochleff, B Sartorius
BACKGROUND: Mitochondrial toxicity, particularly symptomatic hyperlactataemia or lactic acidosis (SHL/LA), has been attributed to the use of nucleoside reverse transcriptase inhibitors (NRTIs), possibly because of their capacity to impede human mitochondrial DNA polymerase-γ (POLG), which is responsible for the replication of mitochondrial DNA. OBJECTIVE: To determine whether known monogenic POLG1 polymorphisms could be linked with the unexpectedly high incidence of SHL/LA observed in HIV-infected Zulu-speaking patients exposed to the NRTIs stavudine or zidovudine in their antiretroviral therapy...
December 1, 2016: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/27917391/adrift-in-the-gray-zone-irb-perspectives-on-research-in-the-learning-health-system
#12
Sandra Soo-Jin Lee, Maureen Kelley, Mildred K Cho, Stephanie Alessi Kraft, Cyan James, Melissa Constantine, Adrienne N Meyer, Douglas Diekema, Alexander M Capron, Benjamin S Wilfond, David Magnus
BACKGROUND: Human subjects protection in healthcare contexts rests on the premise that a principled boundary distinguishes clinical research and clinical practice. However, growing use of evidence-based clinical practices by health systems makes it increasingly difficult to disentangle research from a wide range of clinical activities that are sometimes called "research on medical practice" (ROMP), including quality improvement activities and comparative effectiveness research. The recent growth of ROMP activities has created an ethical and regulatory gray zone with significant implications for the oversight of human subjects research...
2016: AJOB Empirical Bioethics
https://www.readbyqxmd.com/read/27916913/uniformly-porous-nanocrystalline-camgfe1-33ti%C3%A2-o12-ceramic-derived-electro-ceramic-nanocomposite-for-impedance-type-humidity-sensor
#13
Ashis Tripathy, Sumit Pramanik, Ayan Manna, Hanie Nadia Shasmin, Zamri Radzi, Noor Azuan Abu Osman
Since humidity sensors have been widely used in many sectors, a suitable humidity sensing material with improved sensitivity, faster response and recovery times, better stability and low hysteresis is necessary to be developed. Here, we fabricate a uniformly porous humidity sensor using Ca, Ti substituted Mg ferrites with chemical formula of CaMgFe1.33Ti₃O12 as humidity sensing materials by solid-sate step-sintering technique. This synthesis technique is useful to control the grain size with increased porosity to enhance the hydrophilic characteristics of the CaMgFe1...
November 30, 2016: Sensors
https://www.readbyqxmd.com/read/27916866/relationship-between-soft-drink-consumption-and-obesity-in-9-11-years-old-children-in-a-multi-national-study
#14
Peter T Katzmarzyk, Stephanie T Broyles, Catherine M Champagne, Jean-Philippe Chaput, Mikael Fogelholm, Gang Hu, Rebecca Kuriyan, Anura Kurpad, Estelle V Lambert, Jose Maia, Victor Matsudo, Timothy Olds, Vincent Onywera, Olga L Sarmiento, Martyn Standage, Mark S Tremblay, Catrine Tudor-Locke, Pei Zhao
The purpose of this study was to determine the association between regular (sugar containing) and diet (artificially sweetened) soft drink consumption and obesity in children from 12 countries ranging in levels of economic and human development. The sample included 6162 children aged 9-11 years. Information on soft drink consumption was obtained using a food frequency questionnaire. Percentage body fat (%BF) was estimated by bio-electrical impedance analysis, body mass index (BMI) z-scores were computed using World Health Organization reference data, and obesity was defined as a BMI > +2 standard deviations (SD)...
November 30, 2016: Nutrients
https://www.readbyqxmd.com/read/27916681/surfactant-protein-a-deficiency-exacerbates-renal-interstitial-fibrosis-following-obstructive-injury-in-mice
#15
Shaojiang Tian, Chenxiao Li, Ran Ran, Shi-You Chen
Renal interstitial fibrosis is an inevitable consequence of virtually every type of chronic kidney disease. The underlying mechanisms, however, are not completely understood. In the present study, we identified surfactant protein A (SP-A) as a novel protein factor involved in the renal fibrosis induced by unilateral ureter obstruction (UUO). UUO induced SP-A expression in mouse kidney epithelium, likely due to the increased acidic stress and inflammation. Interestingly, SP-A deficiency aggravated UUO-prompted kidney structural damage, macrophage accumulation, and tubulointerstitial fibrosis...
December 1, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27916553/nio-hedgehog-like-nanostructures-au-polyaniline-nanofibers-reduced-graphene-oxide-nanocomposite-with-electrocatalytic-activity-for-non-enzymatic-detection-of-glucose
#16
Kh Ghanbari, F Ahmadi
A novel sensitive non-enzymatic glucose sensor was fabricated based on nickel oxide hedgehog-like nanostructures decorated ternary gold nanoparticles/polyaniline nanofibers/reduced graphene oxide nanocomposites (NiO/Au/PANI/rGO). The morphology and structure of NiO/Au/PANI/rGO nanocomposites were characterized by field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), Raman spectroscopy, and Fourier transform infrared (FT-IR). Electrochemical impedance spectroscopy (EIS) data also indicated the charge transfer of each layer decreased compared to the underneath layer...
December 1, 2016: Analytical Biochemistry
https://www.readbyqxmd.com/read/27916527/dynamic-mrna-transport-and-local-translation-in-radial-glial-progenitors-of-the-developing-brain
#17
Louis-Jan Pilaz, Ashley L Lennox, Jeremy P Rouanet, Debra L Silver
In the developing brain, neurons are produced from neural stem cells termed radial glia [1, 2]. Radial glial progenitors span the neuroepithelium, extending long basal processes to form endfeet hundreds of micrometers away from the soma. Basal structures influence neuronal migration, tissue integrity, and proliferation [3-7]. Yet, despite the significance of these distal structures, their cell biology remains poorly characterized, impeding our understanding of how basal processes and endfeet influence neurogenesis...
November 30, 2016: Current Biology: CB
https://www.readbyqxmd.com/read/27915466/impedance-and-admittance-control-for-respiratory-motion-compensation-during-robotic-needle-insertion-a-preliminary-test
#18
Yeoun Jae Kim, Jong Hyun Seo, Hong Rae Kim, Kwang Gi Kim
BACKGROUND: Many robotic needle-biopsy systems have been developed to enhance the accuracy of needle-biopsy intervention. These systems can reduce the intervention time and the radiation exposure of clinicians. However, respiratory-motion compensation is needed to ensure the accuracy and efficiency of needle biopsy intervention. METHODS: Human respiratory-motion data were acquired using three inertial measurement units (IMUs), and respiratory motion was simulated using the Stewart-Gough platform...
December 4, 2016: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/27914787/elevation-of-yap-promotes-the-epithelial-mesenchymal-transition-and-tumor-aggressiveness-in-colorectal-cancer
#19
Hsiang-Hsi Ling, Chih-Chia Kuo, Bo-Xing Lin, Yen-Hua Huang, Cheng-Wei Lin
Tumor metastasis is the leading cause of death in cancer patients. Identifying metastatic biomarkers in tumor cells would help cancer diagnoses and the development of therapeutic targets. Yes-associated protein (YAP) plays an important role in organ development and has gained much attention in tumorigenesis. However, the role of YAP and the underlying mechanism in tumor metastasis of colorectal cancer (CRC) is still unclear. In this study, we generated metastatic 116-LM cells from the HCT116 CRC cell line. We found that the capacity for tumor aggressiveness was elevated in 116-LM cells and identified that YAP and its mRNA level were upregulated in 116-LM cells...
November 30, 2016: Experimental Cell Research
https://www.readbyqxmd.com/read/27914611/restoration-of-uridine-5-triphosphate-suppressed-delayed-rectifying-k-currents-by-an-no-activator-kmup-1-involves-rhoa-rho-kinase-signaling-in-pulmonary-artery-smooth-muscle-cells
#20
Zen-Kong Dai, Chang-Ling Kao, Su-Ling Hsieh, Ing-Jun Chen, Bin-Nan Wu
We have demonstrated that KMUP-1 (7-[2-[4-(2-chlorobenzene)piperazinyl]ethyl]-1,3-dimethylxanthine) blunts monocrotaline-induced pulmonary arterial hypertension by altering Ca(2+) sensitivity, K(+)-channel function, endothelial nitric oxide synthase activity, and RhoA/Rho kinase (ROCK) expression. This study further investigated whether KMUP-1 impedes uridine 5'-triphosphate (UTP)-inhibited delayed rectifying K(+) (KDR) current in rat pulmonary arteries involved the RhoA/ROCK signaling. Pulmonary artery smooth muscle cells (PASMCs) were enzymatically dissociated from rat pulmonary arteries...
December 2016: Kaohsiung Journal of Medical Sciences
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