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https://www.readbyqxmd.com/read/28211993/recent-lab-on-chip-developments-for-novel-drug-discovery
#1
REVIEW
Nauman Khalid, Isao Kobayashi, Mitsutoshi Nakajima
Microelectromechanical systems (MEMS) and micro total analysis systems (μTAS) revolutionized the biochemical and electronic industries, and this miniaturization process became a key driver for many markets. Now, it is a driving force for innovations in life sciences, diagnostics, analytical sciences, and chemistry, which are called 'lab-on-a-chip, (LOC)' devices. The use of these devices allows the development of fast, portable, and easy-to-use systems with a high level of functional integration for applications such as point-of-care diagnostics, forensics, the analysis of biomolecules, environmental or food analysis, and drug development...
February 17, 2017: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
https://www.readbyqxmd.com/read/28208071/anthocyanin-suppresses-cocrmo-particle-induced-osteolysis-by-inhibiting-ikk%C3%AE-%C3%AE-mediated-nf-%C3%AE%C2%BAb-signaling-in-a-mouse-calvarial-model
#2
Yamin Li, Juehong Li, Bin Li, Hui Qin, Xiaochun Peng, Yaochao Zhao, Yunsu Chen
Wear particle-induced osteolysis and bone resorption have been identified as critical factors of implant failure and total joint revision, in which nuclear factor kappa B (NF-κB) signaling and chronic inflammation have been shown to play key roles. Although anthocyanin is known to have anti-inflammatory function via blocking NF-κB pathway, it is still unclear whether anthocyanin has a protective effect on particle-induced osteolysis. In the present study, we aimed to investigate the detailed effects and the underlying mechanism of anthocyanin on CoCrMo particle-induced osteolysis in a mouse calvavial model...
February 13, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28198975/short-term-sodium-alendronate-administration-improves-the-peri-implant-bone-quality-in-osteoporotic-animals
#3
Danila de Oliveira, Jaqueline Suemi Hassumi, Pedro Henrique da Silva Gomes-Ferreira, Tárik Ocon Braga Polo, Gabriel Ramalho Ferreira, Leonardo Perez Faverani, Roberta Okamoto
Objective: The aim of this study was to evaluate the bone repair process at the bone/implant interface of osteoporotic rats treated with sodium alendronate through the analysis of microtomography, real time polymerase chain reactions and immunohistochemistry (RUNX2 protein, bone sialoprotein (BSP), alkaline phosphatase, osteopontin and osteocalcin). Material and Methods: A total of 42 rats were used and divided in to the following experimental groups: CTL: control group (rats submitted to fictitious surgery and fed with a balanced diet), OST: osteoporosis group (rats submitted to a bilateral ovariectomy and fed with a low calcium diet) and ALE: alendronate group (rats submitted to a bilateral ovariectomy, fed with a low calcium diet and treated with sodium alendronate)...
January 2017: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28188097/study-of-the-association-between-five-polymorphisms-and-risk-of-hepatocellular-carcinoma-a-meta-analysis
#4
Jia-Yun Yu, Fan Hu, Wei Du, Xue-Lei Ma, Kun Yuan
BACKGROUND: Recently, several studies have investigated the association between polymorphisms in miR-146a rs2910164, miR-196a2 rs11614913, miR-499 rs3746444, miR-149 rs229283, miR-34b/c rs4938723, and hepatocellular carcinoma (HCC), which showed inconclusive results. METHODS: A publication search was performed in PubMed, ExcerptaMedica Database, Chinese Biomedical Literature Database, and Chinese National Knowledge Infrastructure to collect relevant medical data published through February 2016...
February 7, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/28186601/-analysis-of-the-cause-of-pregnancy-failure-with-combined-mlpa-assay-for-subtelomeric-regions-and-ultrasonography
#5
Ying Zhao, Jiwu Lou, Manna Sun, Youqing Fu, Yanhui Liu
OBJECTIVE: To explore the value of multiplex ligation-dependent probe amplification (MLPA) for the detection of chromosome abnormalities in miscarriage tissues, and to correlate the result with ultrasound findings. METHODS: A total of 421 cases of spontaneous abortions and fetal deaths were detected with the MLPA method. RESULTS: Among the 421 samples, 232 (55.11%) had an abnormal MLPA result. For the 286 cases derived from < 13 weeks pregnancy, 206 (72...
February 10, 2017: Zhonghua Yi Xue Yi Chuan Xue za Zhi, Zhonghua Yixue Yichuanxue Zazhi, Chinese Journal of Medical Genetics
https://www.readbyqxmd.com/read/28183607/anti-microbial-surfaces-an-approach-for-deposition-of-zno-nanoparticles-on-pva-gelatin-composite-film-by-screen-printing-technique
#6
J V Meshram, V B Koli, M R Phadatare, S H Pawar
Initially micro-organisms get exposed to the surfaces, this demands development of anti-microbial surfaces to inhibit their proliferation. Therefore, herein, we attempt screen printing technique for development of PVA-GE/ZnO nanocomposite (PG/ZnO) films. The synthesis of PG/ZnO nanocomposite includes two steps as: (i) Coating of Zinc Oxide nanoparticles (ZnO NPs) by poly ethylene glycol in order to be compatible with organic counterparts. (ii) Deposition of coated nanoparticles on the PG film surface. The results suggest the enhancement in anti-microbial activity of PG/ZnO nanocomposite over pure ZnO NPs against both Gram positive Bacillus subtilis and Gram negative Escherichia coli from zone of inhibition...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28182298/looking-into-the-puparium-micro-ct-visualization-of-the-internal-morphological-changes-during-metamorphosis-of-the-blow-fly-calliphora-vicina-with-the-first-quantitative-analysis-of-organ-development-in-cyclorrhaphous-dipterans
#7
Daniel Martín-Vega, Thomas J Simonsen, Martin J R Hall
Metamorphosis of cyclorrhaphous flies takes place inside a barrel-like puparium, formed by the shrinking, hardening and darkening of the third-instar larval cuticle. The opacity of this structure hampers the visualization of the morphological changes occurring inside and therefore a full understanding of the metamorphosis process. Here, we use micro-computed tomography (micro-CT) to describe the internal morphological changes that occur during metamorphosis of the blow fly, Calliphora vicina Robineau-Desvoidy 1830 (Diptera: Calliphoridae) at a greater temporal resolution than anything hitherto published...
February 9, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28181684/exercise-based-cardiac-rehabilitation-for-adults-with-atrial-fibrillation
#8
REVIEW
Signe S Risom, Ann-Dorthe Zwisler, Pernille P Johansen, Kirstine L Sibilitz, Jane Lindschou, Christian Gluud, Rod S Taylor, Jesper H Svendsen, Selina K Berg
BACKGROUND: Exercise-based cardiac rehabilitation may benefit adults with atrial fibrillation or those who had been treated for atrial fibrillation. Atrial fibrillation is caused by multiple micro re-entry circuits within the atrial tissue, which result in chaotic rapid activity in the atria. OBJECTIVES: To assess the benefits and harms of exercise-based rehabilitation programmes, alone or with another intervention, compared with no-exercise training controls in adults who currently have AF, or have been treated for AF...
February 9, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28177936/local-anodic-oxidation-on-hydrogen-intercalated-graphene-layers-oxide-composition-analysis-and-role-of-the-silicon-carbide-substrate
#9
Francesco Colangelo, Vincenzo Piazza, Camilla Coletti, Stefano Roddaro, Fabio Beltram, Pasqualantonio Pingue
We investigate nanoscale local anodic oxidation (LAO) on hydrogen-intercalated graphene grown by controlled sublimation of silicon carbide (SiC). Scanning probe microscopy was used as a lithographic and characterization tool in order to investigate the local properties of the nanofabricated structures. The anomalous thickness observed after the graphene oxidation process is linked to the impact of LAO on the substrate. Micro-Raman (μ-Raman) spectroscopy was employed to demonstrate the presence of two oxidation regimes depending on the applied bias...
March 10, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28171811/diametral-compression-behavior-of-biomedical-titanium-scaffolds-with-open-interconnected-pores-prepared-with-the-space-holder-method
#10
B Arifvianto, M A Leeflang, J Zhou
Scaffolds with open, interconnected pores and appropriate mechanical properties are required to provide mechanical support and to guide the formation and development of new tissue in bone tissue engineering. Since the mechanical properties of the scaffold tend to decrease with increasing porosity, a balance must be sought in order to meet these two conflicting requirements. In this research, open, interconnected pores and mechanical properties of biomedical titanium scaffolds prepared by using the space holder method were characterized...
January 31, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28171806/bedside-rop-screening-and-telemedicine-interpretation-integrated-to-a-neonatal-transport-system-economic-aspects-and-return-on-investment-analysis
#11
Gábor Kovács, Zsolt Somogyvári, Erika Maka, László Nagyjánosi
BACKGROUND AND AIM: Peter Cerny Ambulance Service - Premature Eye Rescue Program (PCA-PERP) uses digital retinal imaging (DRI) with remote interpretation in bedside ROP screening, which has advantages over binocular indirect ophthalmoscopy (BIO) in screening of premature newborns. We aimed to demonstrate that PCA-PERP provides good value for the money and to model the cost ramifications of a similar newly launched system. METHODS: As DRI was demonstrated to have high diagnostic performance, only the costs of bedside DRI-based screening were compared to those of traditional transport and BIO-based screening (cost-minimization analysis)...
February 4, 2017: Early Human Development
https://www.readbyqxmd.com/read/28168253/electrochemical-micro-nano-machining-principles-and-practices
#12
REVIEW
Dongping Zhan, Lianhuan Han, Jie Zhang, Quanfeng He, Zhao-Wu Tian, Zhong-Qun Tian
Micro/nano-machining (MNM) is becoming the cutting-edge of high-tech manufacturing because of the increasing industrial demand for supersmooth surfaces and functional three-dimensional micro/nano-structures (3D-MNS) in ultra-large scale integrated circuits, microelectromechanical systems, miniaturized total analysis systems, precision optics, and so on. Taking advantage of no tool wear, no surface stress, environmental friendliness, simple operation, and low cost, electrochemical micro/nano-machining (EC-MNM) has an irreplaceable role in MNM...
February 7, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/28157975/electro-tunable-liquid-crystal-laser-based-on-high-q-fabry-p%C3%A3-rot-microcavity
#13
Wonsuk Lee, Wenjie Wang, Guksik Lee, Seong Ho Ryu, Xudong Fan, Dong Ki Yoon
We demonstrate an electro-tunable laser based on a plano-concave (p-c) Fabry-Pérot (FP) microcavity filled with dye-doped liquid crystal (LC) gain material. Owing to the high Q-factor of the p-c FP microcavity, the lasing threshold of the LC laser is as low as 0.58 µJ/mm<sup>2</sup>. The single-mode emission wavelength can be easily tuned by varying applied voltage, which induces the reconfiguration of LC molecules. Furthermore, this lasing platform operates at room temperature, thanks to the wide temperature range of the nematic LC...
January 23, 2017: Optics Express
https://www.readbyqxmd.com/read/28156256/prevalence-of-cardiovascular-risk-factors-among-28-000-employees
#14
Martin Scheerbaum, Constantin Langenbach, Petra Scheerbaum, Franziska Heidemann, Henrik C Riess, Hagen Heigel, Sebastian E Debus, Christian-Alexander Behrendt
BACKGROUND: Cardiovascular diseases are the leading cause of death in Germany. The knowledge of causal risk factors and their distribution is of utmost importance to design screening programs. PROBANDS AND METHODS: In this cross-sectional study design we used STROBE criteria to achieve the highest comparability possible. Anthropometric measures (height and weight), total cholesterol, glucose level, and blood pressure were measured. Probands' history was collected by using a standardized questionnaire...
February 3, 2017: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/28154740/comparative-analysis-of-actigraphy-performance-in-healthy-young-subjects
#15
Giannina J Bellone, Santiago A Plano, Daniel P Cardinali, Daniel Pérez Chada, Daniel E Vigo, Diego A Golombek
Sleep-related health disorders are increasing worldwide; diagnosis and treatment of such sleep diseases are commonly invasive and sometimes unpractical or expensive. Actigraphy has been recently introduced as a tool for the study of sleep and circadian disorders; however, there are several devices that claim to be useful for research and have not been thoroughly tested. This comparative study provides activity, sleep and temperature information regarding several of the most commonly used actigraphers: Micro-Mini Motion Logger; Act Trust; Misfit Flash; Fitbit Flex & Thermochron...
October 2016: Sleep Science
https://www.readbyqxmd.com/read/28149455/the-influence-of-length-of-implant-on-primary-stability-an-in-vitro-study-using-resonance-frequency-analysis
#16
Anwar B Bataineh, Ala M Al-Dakes
BACKGROUND: Primary stabilityis not sufficientin less contact area between the implant and bone, the healing process because will be disrupted due to micro-motions and fibrous tissue affects osseointegration. MATERIAL AND METHODS: We implemented an in vitro experimental study of total 135 XiVE® implants were inserted in 22.5 bovine cow ribs with bone quality similar to a type IV human bone. Each rib end received a group of three different implant lengths, which were 8mm, 13mm and 15mm and had the same diameter 3...
January 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28148896/investigated-the-safety-of-intra-renal-arterial-transfusion-of-autologous-cd34-cells-and-time-courses-of-creatinine-levels-endothelial-dysfunction-biomarkers-and-micro-rnas-in-chronic-kidney-disease-patients-phase-i-clinical-trial
#17
Mel S Lee, Fan-Yen Lee, Yung-Lung Chen, Pei-Hsun Sung, Hsin-Ju Chiang, Kuan-Hung Chen, Tien-Hung Huang, Yi-Ling Chen, John Y Chiang, Tsung-Cheng Yin, Hsueh-Wen Chang, Hon-Kan Yip
This was a phase I clinical trial to investigate the safety of autologous peripheral-blood-derived CD34+ cell therapy for patients with chronic kidney disease (CKD-treatment) (i.e., at Stages III and IV). Between November 2014 and October 2015, a total of 10 study patients were prospectively enrolled into this phase I trial. Patients who failed to enroll into the trial in the initial state of eligibility assessment were served as CKD-control group (n = 9). The health-control group was composed of 10 volunteers for the purposes of comparing (1) circulation level of endothelial progenitor cells (EPCs), (2) angiogenesis ability, and (3) anti-apoptotic miRNAs between healthy subjects and CKD patients...
January 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28147679/packaged-peristaltic-micropump-for-controlled-drug-delivery-application
#18
K B Vinayakumar, Girish Nadiger, Vikas R Shetty, N S Dinesh, M M Nayak, K Rajanna
Micropump technology has evolved significantly in the last two decades and is finding a variety of applications ranging from μTAS (micro Total Analysis System) to drug delivery. However, the application area of the micropump is limited owing to: simple pumping mechanism, ease of handling, controlled (microliter to milliliter) delivery, continuous delivery, and accuracy in flow rate. Here, the author presents the design, development, characterization, and precision flow controlling of a DC-motor driven peristaltic pump for controlled drug delivery application...
January 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28135291/congenital-cataract-in-gpr161vl-vl-mice-is-modified-by-proximal-chromosome-15
#19
Bo I Li, Myka R Ababon, Paul G Matteson, Yong Lin, Vikas Nanda, James H Millonig
The morphology and severity of human congenital cataract varies even among individuals with the same mutation, suggesting that genetic background modifies phenotypic penetrance. The spontaneous mouse mutant, vacuolated lens (vl), arose on the C3H/HeSnJ background. The mutation disrupts secondary lens fiber development by E16.5, leading to full penetrance of congenital cataract. The vl locus was mapped to a frameshift deletion in the orphan G protein-coupled receptor, Gpr161, which is expressed in differentiating lens fiber cells...
2017: PloS One
https://www.readbyqxmd.com/read/28118635/the-effect-of-autologous-platelet-rich-plasma-on-bone-regeneration-by-autologous-mesenchymal-stem-cells-loaded-onto-allogeneic-cancellous-bone-granules
#20
Min Wook Joo, Seung Jae Chung, Seung Han Shin, Yang-Guk Chung
To develop a clinically effective bone regeneration strategy, we compared bone regeneration using allogeneic cancellous bone granule scaffolds loaded with autologous bone marrow-derived mesenchymal stem cells (BM-MSC) with or without autologous platelet-rich plasma (PRP). Critical-sized segmental bone defects were made at the mid-shaft of both radiuses in 41 New Zealand White rabbits. Small-sized allogeneic cancellous bone granules (300-700 μm in diameter) loaded with BM-MSC were implanted on one side, and PRP was added...
January 25, 2017: Cells, Tissues, Organs
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