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https://www.readbyqxmd.com/read/28532144/physically-targeted-intravenous-polyurethane-nanoparticles-for-controlled-release-of-atorvastatin-calcium
#1
Behnaz Sadat Eftekhari, Akbar Karkhaneh, Ali Alizadeh
Background: Intravenous drug delivery is an advantageous choice for rapid administration, immediate drug effect, and avoidance of first-pass metabolism in oral drug delivery. In this study, the synthesis, formulation, and characterization of atorvastatin-loaded polyurethane (PU) nanoparticles were investigated for intravenous route of administration. Methods: First, PU was synthesized and characterized. Second, nanoparticles were prepared in four different ratios of drug to polymer through two different techniques including emulsion-diffusion and single-emulsion...
May 23, 2017: Iranian Biomedical Journal
https://www.readbyqxmd.com/read/28532014/advanced-review-of-graphene-based-nanomaterials-in-drug-delivery-systems-synthesis-modification-toxicity-and-application
#2
REVIEW
Qi Zhang, Zhuona Wu, Ning Li, Yiqiong Pu, Bing Wang, Tong Zhang, Jiansheng Tao
The discovery of graphene, a notable achievement in the field of novel carbon nanomaterials, has triggered the worldwide exploration of the biomedical applications of this material since 2004 because of its unique properties. The two-dimensional planar structure, large surface area, chemical stability, mechanical stability, and good biocompatibility of graphene are promising for applications in drug delivery systems (DDSs). In this review, we briefly discuss the characteristics, synthesis, and modification of graphene...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28530794/an-intrinsically-stretchable-electrochromic-display-by-a-composite-film-of-poly-3-4-ethylenedioxythiophene-and-polyurethane
#3
Hiroyuki Kai, Wataru Suda, Yudai Ogawa, Kuniaki Nagamine, Matsuhiko Nishizawa
A stretchable, electrochromic film of a uniform composite of poly(3,4-ethylenedioxythiophene):p-toluene sulfonic acid (PEDOT:PTS) and polyurethane (PU) (PEDOT/PU) was fabricated, and its integration with a hydrogel as a free-standing, stretchable electrochromic (EC) display was demonstrated. The PEDOT/PU composite film was prepared by the spin coating of a solution containing an EDOT monomer and PU, followed by oxidative polymerization using iron (III) tosylate at elevated temperature. The fabricated film showed reversible electrochromism without an external conductive support...
May 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28530678/the-complex-genetics-of-hypoplastic-left-heart-syndrome
#4
Xiaoqin Liu, Hisato Yagi, Shazina Saeed, Abha S Bais, George C Gabriel, Zhaohan Chen, Kevin A Peterson, You Li, Molly C Schwartz, William T Reynolds, Manush Saydmohammed, Brian Gibbs, Yijen Wu, William Devine, Bishwanath Chatterjee, Nikolai T Klena, Dennis Kostka, Karen L de Mesy Bentley, Madhavi K Ganapathiraju, Phillip Dexheimer, Linda Leatherbury, Omar Khalifa, Anchit Bhagat, Maliha Zahid, William Pu, Simon Watkins, Paul Grossfeld, Stephen A Murray, George A Porter, Michael Tsang, Lisa J Martin, D Woodrow Benson, Bruce J Aronow, Cecilia W Lo
Congenital heart disease (CHD) affects up to 1% of live births. Although a genetic etiology is indicated by an increased recurrence risk, sporadic occurrence suggests that CHD genetics is complex. Here, we show that hypoplastic left heart syndrome (HLHS), a severe CHD, is multigenic and genetically heterogeneous. Using mouse forward genetics, we report what is, to our knowledge, the first isolation of HLHS mutant mice and identification of genes causing HLHS. Mutations from seven HLHS mouse lines showed multigenic enrichment in ten human chromosome regions linked to HLHS...
May 22, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28530560/lactulose-production-from-efficient-isomerization-of-lactose-catalyzed-by-recyclable-sodium-aluminate
#5
Mingming Wang, Mohammed A A Gasmalla, Habtamu Admassu Tessema, Xiao Hua, Ruijin Yang
An efficient strategy for the synthesis of high-purity lactulose through chemical isomerization of lactose was developed using recyclable catalyst sodium aluminate. Maximum yield of 85.45±1.79% was obtained from 35% (w/v) of lactose using a 1:1M ratio of NaAlO2-lactose after reaction at 60°C and pH 12 for 50min, with a purity ratio (Pu) of approximately 95%. Al(OH)3 precipitation from lactulose syrup through pH adjustment showing a superior decolorizing efficiency was implemented, which simplified the removal of catalyst and provided a convenient approach to achieve catalyst recovery...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28529761/developing-and-evaluating-a-mobile-driver-fatigue-detection-network-based-on-electroencephalograph-signals
#6
Jinghai Yin, Jianfeng Hu, Zhendong Mu
The rapid development of driver fatigue detection technology indicates important significance of traffic safety. The authors' main goals of this Letter are principally three: (i) A middleware architecture, defined as process unit (PU), which can communicate with personal electroencephalography (EEG) node (PEN) and cloud server (CS). The PU receives EEG signals from PEN, recognises the fatigue state of the driver, and transfer this information to CS. The CS sends notification messages to the surrounding vehicles...
February 2017: Healthcare Technology Letters
https://www.readbyqxmd.com/read/28529597/dysregulation-of-mir-638-in-hepatocellular-carcinoma-and-its-clinical-significance
#7
Jiwen Cheng, Yanke Chen, Pu Zhao, Na Li, Jianwen Lu, Jianhui Li, Zhengwen Liu, Yi Lv, Chen Huang
MicroRNAs (miRNAs/miRs) have been identified as important post-transcriptional regulators in healthy liver physiology and liver diseases. However, the clinical significance of miR-638 in hepatocellular carcinoma (HCC) remains unclear. The aim of the present study was to investigate the status of miR-638 expression in HCC and to determine its clinical significance. The expression of miR-638 was evaluated in 60 HCC tissues samples and HCC SMMC-7721, HepG2 and Hep3B cell lines using reverse transcription-quantitative polymerase chain reaction...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529579/expression-and-correlation-analysis-of-regiv-and-vascular-endothelial-growth-factors-vegf-a-and-vegf-c-in-metastatic-spinal-tumors
#8
Shuquan Zhang, Guanjie Zhao, Yi Zhao, Rui Gu, Chuangang Peng, Zhe Pu, Minfei Wu
The expression and correlation analysis of the regenerating gene family member 4 (RegIV) and vascular endothelial growth factors (VEGF-A and VEGF-C) in metastatic spinal tumors were studied. Fifteen patients with metastatic spinal tumors who underwent operation in our hospital from January 2011 to January 2013 were selected into this study. The expression level of tumor tissues in patients with spinal metastasis and RegIV, VEGF-A and VEGF-C of the corresponding paracancer normal tissue samples were evaluated by immunohistochemical staining method and the correlation between the expression of RegIV, VEGF-A and VEGF-C was analyzed...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529559/fbp1-expression-is-associated-with-basal-like-breast-carcinoma
#9
Lei Shi, Chunbo Zhao, Haihong Pu, Qingyuan Zhang
The present study aimed to investigate the value of liver fructose 1,6-bisphophatase (FBP1) and hypoxia-inducible factor-1α (HIF-1α) in the molecular subtyping of breast carcinoma. Tissue obtained from 60 surgical specimens from patients with breast carcinoma underwent immunohistochemical staining for cytokeratin 5/6, HIF-1α and FBP1. The variation in the expression levels of these markers and clinicopathological factors were compared between molecular subtypes. In addition, disease-free survival was compared between basal-like and luminal breast carcinoma, according to differing expression levels of HIF-1α and FBP1...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28528333/effect-of-1-25-oh-2d3-on-proliferation-of-fibroblast-like-synoviocytes-and-expressions-of-pro-inflammatory-cytokines-through-regulating-microrna-22-in-a-rat-model-of-rheumatoid-arthritis
#10
Ping Fan, Lan He, Nan Hu, Jing Luo, Jing Zhang, Ling-Fei Mo, Yan-Hua Wang, Dan Pu, Xiao-Hong Lv, Zhi-Ming Hao, Chang-Hai Ding, Wu-Jun Xue, Yang Li
OBJECTIVE: This study aims to investigate the regulatory mechanism of 1,25-(OH)2D3 on the proliferation of fibroblast-like synoviocytes (FLS) and expressions of pro-inflammatory cytokines in rheumatoid arthritis (RA) rats via microRNA-22 (miR-22). METHODS: A rat model of RA was established with a subcutaneous injection of type II collagen. After treated with different concentrations of 1,25-(OH)2D3 the proliferation of FLS was estimated by the MTT method, and the optimal concentration of 1,25-(OH)2D3 was selected for further experiments...
May 12, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28528117/composite-elastomeric-polyurethane-scaffolds-incorporating-small-intestinal-submucosa-for-soft-tissue-engineering
#11
Lincui Da, Mei Gong, Anjing Chen, Yi Zhang, Yizhou Huang, Zhijun Guo, Shengfu Li, Jesse Li-Ling, Li Zhang, Huiqi Xie
Although soft tissue replacement has been clinically successful in many cases, the corresponding procedure has many limitations including the lack of resilience and mechanical integrity, significant donor-site morbidity, volume loss with time, and fibrous capsular contracture. These disadvantages can be alleviated by utilizing bio-absorbable scaffolds with high resilience and large strain, which are capable of stimulating natural tissue regeneration. Hence, the chemically crosslinked tridimensional scaffolds obtained by incorporating water-based polyurethane (PU) (which was synthesized from polytetramethylene ether glycol, isophorone diisocyanate, and 2,2-bis(hydroxymethyl) butyric acid) into a bioactive extracellular matrix consisting of small intestinal submucosa (SIS) have been tested in this study to develop a new approach for soft tissue engineering...
May 17, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28526865/realization-of-large-energy-proportion-in-the-central-lobe-by-coherent-beam-combination-based-on-conformal-projection-system
#12
Dong Zhi, Zhixin Zhang, Yanxing Ma, Xiaolin Wang, Zilun Chen, Wuming Wu, Pu Zhou, Lei Si
In this paper, we experimentally validate a tiled-aperture conformal projection system with the largest array filling factor and element beam truncation factor to the best of our knowledge. The conformal projection system, which is made up of a hexagonal adaptive fiber-optics collimator (AFOC) array with the proximate ideal intensity distributions, is fabricated and the performance of output beam is tested and evaluated properly and carefully. Both of the active phase-locking control and precise tip-tilt control are implemented successfully in the CBC of the hexagonal seven-beam-array...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526820/multi-label-learning-for-predicting-the-activities-of-antimicrobial-peptides
#13
Pu Wang, Ruiquan Ge, Liming Liu, Xuan Xiao, Ye Li, Yunpeng Cai
Antimicrobial peptides (AMPs) are peptide antibiotics with a broad spectrum of antimicrobial activities. Activity prediction of AMPs from their amino acid sequences is of great therapeutic importance but imposes challenges on prediction methods due to label interactions. In this paper we propose a novel multi-label learning model to address this problem. A weighted K-nearest neighbor classifier is adopted for efficient representation learning of the sequence data. A multiple linear regression model is then employed to learn a mapping from the classifier score vectors to the target labels, with label correlations considered...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526646/iatrogenic-sigmoid-sinus-occlusion-rescued-by-graft-repair-and-endovascular-thrombolysis
#14
Lai-Fung Li, Jenny Kan-Suen Pu, Chun-Pong Tsang, Anderson Chun-On Tsang, Wai-Man Lui, Gilberto Ka-Kit Leung
No abstract text is available yet for this article.
May 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28526526/nuclear-weapons-produced-236-u-239-pu-and-240-pu-archived-in-a-porites-lutea-coral-from-enewetak-atoll
#15
M B Froehlich, S G Tims, S J Fallon, A Wallner, L K Fifield
A slice from a Porites Lutea coral core collected inside the Enewetak Atoll lagoon, within 15 km of all major nuclear tests conducted at the atoll, was analysed for (236)U, (239)Pu and (240)Pu over the time interval 1952-1964 using a higher time resolution than previously reported for a parallel slice from the same core. In addition two sediment samples from the Koa and Oak craters were analysed. The strong peaks in the concentrations of (236)U and (239)Pu in the testing years are confirmed to be considerably wider than the flushing time of the lagoon...
May 16, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28526525/high-throughput-estimation-of-specific-activities-of-enzyme-mutants-in-cell-lysates-through-immunoturbidimetric-assay-of-proteins
#16
Xiaolan Yang, Yiran Feng, Huimin Chong, Deqiang Wang, Xiaolei Hu, Jun Pu, Chang-Guo Zhan, Fei Liao
High-throughput estimation of specific activities of an enzyme and its mutants in a group (enzyme/mutants) in cell lysates via high-throughput assay of their activities and separate immunoturbidimetric assay (ITA) of their proteins was proposed. Pseudomonas aeruginosa arylsulfatase (PAAS) and Bacillus fastidious uricase (BFU) served as two models. ITA employed 0.75 mg of antisera against PAAS or BFU as the reference in 96-well microplates to measure the difference of extinction at 340 and 700 nm. According to the calibration curve, ITA quantified the reference from 0...
May 16, 2017: Analytical Biochemistry
https://www.readbyqxmd.com/read/28524828/relationships-of-inflammatory-factors-and-risk-factors-with-different-target-organ-damage-in-essential-hypertension-patients
#17
Chun-Lin Lai, Jin-Ping Xing, Xiao-Hong Liu, Jie Qi, Jian-Qiang Zhao, You-Rui Ji, Wu-Xiao Yang, Pu-Juan Yan, Chun-Yan Luo, Lu-Fang Ruan
BACKGROUND: Atherosclerosis (AS) is an inflammatory disease. Inflammation was considered to play a role in the whole process of AS. This study aimed to analyze the relationships of inflammatory factors and risk factors with different target organ damages (TOD) in essential hypertension (EH) patients and to explore its clinical significance. METHODS: A total of 294 EH patients were selected and divided into four groups according to their conditions of TOD. Forty-eight healthy subjects were selected as control...
June 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28524639/high-dose-intravenous-steroid-pulse-therapy-in-ocular-involvement-of-behcet-s-disease-a-pilot-double-blind-control-study
#18
Mastaneh Mohammadi, Farhad Shahram, Hormoz Shams, Massoomeh Akhlaghi, Farimah Ashofteh, Fereydoun Davatchi
AIM: To evaluate the efficacy of intravenous high-dose pulses of methylprednisolone (IVPM) for treatment of ocular involvement in Behcet's disease (BD). METHOD: In a double-blind control study, we randomized BD patients with posterior uveitis (PU) and/or retinal vasculitis (RV) into two groups. They received either IVPM (1000 mg methylprednisolone) or placebo for 3 consecutive days. Both groups received combination therapy with IV cyclophosphamide, azathioprine and prednisolone for 6 months...
May 19, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28523535/self-protection-against-triptolide-induced-toxicity-in-human-hepatic-cells-via-nrf2-are-nqo1-pathway
#19
Ling-Ling Zhou, Cong Zhou, Xiao-Wen Liang, Zhe Feng, Zhang-Pu Liu, Hao-Lu Wang, Xue-Ping Zhou
OBJECTIVE: To find the signaling pathway of triptolide (TP)-induced liver injury and to reveal whether NF-E2-related factor 2 (Nrf2) plays an important role in cellular self-protection. METHODS: The L-02 and HepG2 cells were cultured and treated with various concentrations of TP. The cell viability was observed, and the cell medium was collected for detecting the aspartate aminotransferase (ALT), alanine aminotransferase (AST), lactate dehydrogenase (LDH), superoxide dismutase (SOD) and L-glutathione production (GSH) levels...
May 18, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28523350/comparison-of-a-radiomic-biomarker-with-volumetric-analysis-for-decoding-tumour-phenotypes-of-lung-adenocarcinoma-with-different-disease-specific-survival
#20
Mei Yuan, Yu-Dong Zhang, Xue-Hui Pu, Yan Zhong, Hai Li, Jiang-Fen Wu, Tong-Fu Yu
OBJECTIVES: To compare a multi-feature-based radiomic biomarker with volumetric analysis in discriminating lung adenocarcinomas with different disease-specific survival on computed tomography (CT) scans. METHODS: This retrospective study obtained institutional review board approval and was Health Insurance Portability and Accountability Act (HIPAA) compliant. Pathologically confirmed lung adenocarcinoma (n = 431) manifested as subsolid nodules on CT were identified...
May 18, 2017: European Radiology
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