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https://www.readbyqxmd.com/read/27911415/extraction-of-plant-based-capsules-for-microencapsulation-applications
#1
Michael G Potroz, Raghavendra C Mundargi, Jae Hyeon Park, Ee-Lin Tan, Nam-Joon Cho
Microcapsules derived from plant-based spores or pollen provide a robust platform for a diverse range of microencapsulation applications. Sporopollenin exine capsules (SECs) are obtained when spores or pollen are processed so as to remove the internal sporoplasmic contents. The resulting hollow microcapsules exhibit a high degree of micromeritic uniformity and retain intricate microstructural features related to the particular plant species. Herein, we demonstrate a streamlined process for the production of SECs from Lycopodium clavatum spores and for the loading of hydrophilic compounds into these SECs...
November 9, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911119/phase-ii-study-of-dasatinib-in-previously-treated-patients-with-advanced-non-small-cell-lung-cancer
#2
Michael J Kelley, Gautam Jha, Debra Shoemaker, James E Herndon, Lin Gu, William T Barry, Jeffrey Crawford, Neal Ready
The Src pathway in activated in about one-third of non-small cell lung cancer (NSCLC) tumors. Dasatinib has Src-inhibitor activity. We examined the activity of dasatinib in 37 patients with advanced, previously treated NSCLC. Among the 29 patients who underwent pre-treatment biopsy for RNA biomarker analysis, 25 were treated with dasatinib 70 mg twice daily. There were no responses. Five patients discontinued treatment due to toxicity. Three patients had minor biopsy-related pneumothoraces. Given the lack of responses, no biomarkers were analyzed...
December 2, 2016: Cancer Investigation
https://www.readbyqxmd.com/read/27904740/from-substituent-effects-to-applications-enhancing-the-optical-response-of-a-four-component-assembly-for-reporting-ee-values
#3
Chung-Yon Lin, Michael W Giuliano, Bryan D Ellis, Scott J Miller, Eric V Anslyn
High-throughput screening for asymmetric catalysts has stimulated an interest in optically-based enantiomeric-excess (ee) sensors, primarily for their improved time and cost efficiency when compared to the standard HPLC analysis. We present herein substituent-effect studies on a recently reported Zn(II) multicomponent assembly that is used for chiral, secondary alcohol ee detemination. The systematic altering of assemblies formed from select substituted pyridyl ligands pointed to the conclusion that steric effects dominate the mode of interaction at the pyridyl 3- and 6- positions...
July 1, 2016: Chemical Science
https://www.readbyqxmd.com/read/27903751/microdose-induced-drug-dna-adducts-as-biomarkers-of-chemotherapy-resistance-in-humans-and-mice
#4
Maike Zimmermann, Si-Si Wang, Hongyong Zhang, Tzu-Yin Lin, Michael Malfatti, Kurt Haack, Ted Ognibene, Hongyuan Yang, Susan Airhart, Kenneth W Turteltaub, George D Cimino, Clifford G Tepper, Alexandra Drakaki, Karim Chamie, Ralph de Vere White, Chong-Xian Pan, Paul T Henderson
We report progress on predicting tumor response to platinum-based chemotherapy with a novel mass spectrometry approach. Fourteen bladder cancer patients were administered one diagnostic microdose each of [14C]carboplatin (1% of the therapeutic dose). Carboplatin-DNA adducts were quantified by accelerator mass spectrometry (AMS) in blood and tumor samples collected within 24 hours, and compared to subsequent chemotherapy response. Patients with the highest adduct levels were responders, but not all responders had high adduct levels...
November 30, 2016: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/27893080/travel-associated-zika-virus-disease-acquired-in-the-americas-through-february-2016-a-geosentinel-analysis
#5
Davidson H Hamer, Kira A Barbre, Lin H Chen, Martin P Grobusch, Patricia Schlagenhauf, Abraham Goorhuis, Perry J J van Genderen, Israel Molina, Hilmir Asgeirsson, Phyllis E Kozarsky, Eric Caumes, Stefan H Hagmann, Frank P Mockenhaupt, Gilles Eperon, Elizabeth D Barnett, Emmanuel Bottieau, Andrea K Boggild, Philippe Gautret, Noreen A Hynes, Susan Kuhn, R Ryan Lash, Karin Leder, Michael Libman, Denis J M Malvy, Cecilia Perret, Camilla Rothe, Eli Schwartz, Annelies Wilder-Smith, Martin S Cetron, Douglas H Esposito
Background: Zika virus has spread rapidly in the Americas and has been imported into many nonendemic countries by travelers. Objective: To describe clinical manifestations and epidemiology of Zika virus disease in travelers exposed in the Americas. Design: Descriptive, using GeoSentinel records. Setting: 63 travel and tropical medicine clinics in 30 countries. Patients: Ill returned travelers with a confirmed, probable, or clinically suspected diagnosis of Zika virus disease seen between January 2013 and 29 February 2016...
November 22, 2016: Annals of Internal Medicine
https://www.readbyqxmd.com/read/27890160/children-s-choice-color-associations-in-children-s-safety-sign-design
#6
Kin Wai Michael Siu, Mei Seung Lam, Yi Lin Wong
Color has been more identified as a key consideration in ergonomics. Color conveys messages and is an important element in safety signs, as it provides extra information to users. However, very limited recent research has focused on children and their color association in the context of safety signs. This study thus examined how children use colors in drawing different safety signs and how they associate colors with different concepts and objects that appear in safety signs. Drawing was used to extract children's use of color and the associations they made between signs and colors...
March 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/27889277/evaluating-the-four-kallikrein-panel-of-the-4kscore-for-prediction-of-high-grade-prostate-cancer-in-men-in-the-canary-prostate-active-surveillance-study
#7
Daniel W Lin, Lisa F Newcomb, Marshall D Brown, Daniel D Sjoberg, Yan Dong, James D Brooks, Peter R Carroll, Matthew Cooperberg, Atreya Dash, William J Ellis, Michael Fabrizio, Martin E Gleave, Todd M Morgan, Peter S Nelson, Ian M Thompson, Andrew A Wagner, Yingye Zheng
BACKGROUND: Diagnosis of Gleason 6 prostate cancer can leave uncertainty about the presence of undetected aggressive disease. OBJECTIVE: To evaluate the utility of a four kallikrein (4K) panel in predicting the presence of high-grade cancer in men on active surveillance. DESIGN, SETTING, AND PARTICIPANTS: Plasma collected before the first and subsequent surveillance biopsies was assessed for 718 men prospectively enrolled in the multi-institutional Canary PASS trial...
November 23, 2016: European Urology
https://www.readbyqxmd.com/read/27881736/reactive-oxygen-species-drive-evolution-of-pro-biofilm-variants-in-pathogens-by-modulating-cyclic-di-gmp-levels
#8
Song Lin Chua, Yichen Ding, Yang Liu, Zhao Cai, Jianuan Zhou, Sanjay Swarup, Daniela I Drautz-Moses, Stephan Christoph Schuster, Staffan Kjelleberg, Michael Givskov, Liang Yang
The host immune system offers a hostile environment with antimicrobials and reactive oxygen species (ROS) that are detrimental to bacterial pathogens, forcing them to adapt and evolve for survival. However, the contribution of oxidative stress to pathogen evolution remains elusive. Using an experimental evolution strategy, we show that exposure of the opportunistic pathogen Pseudomonas aeruginosa to sub-lethal hydrogen peroxide (H2O2) levels over 120 generations led to the emergence of pro-biofilm rough small colony variants (RSCVs), which could be abrogated by l-glutathione antioxidants...
November 2016: Open Biology
https://www.readbyqxmd.com/read/27879053/n-arylsulfonyl-indolines-as-retinoic-acid-receptor-related-orphan-receptor%C3%A2-%C3%AE-ror%C3%AE-agonists
#9
Christelle Doebelin, Rémi Patouret, Ruben D Garcia-Ordonez, Mi Ra Chang, Venkatasubramanian Dharmarajan, Dana S Kuruvilla, Scott J Novick, Li Lin, Michael D Cameron, Patrick R Griffin, Theodore M Kamenecka
The nuclear retinoic acid receptor-related orphan receptor γ (RORγ; NR1F3) is a key regulator of inflammatory gene programs involved in T helper 17 (TH 17) cell proliferation. As such, synthetic small-molecule repressors (inverse agonists) targeting RORγ have been extensively studied for their potential as therapeutic agents for various autoimmune diseases. Alternatively, enhancing TH 17 cell proliferation through activation (agonism) of RORγ may boost an immune response, thereby offering a potentially new approach in cancer immunotherapy...
November 23, 2016: ChemMedChem
https://www.readbyqxmd.com/read/27874873/enabling-singlet-fission-by-controlling-intramolecular-charge-transfer-in-%C3%AF-stacked-covalent-terrylenediimide-dimers
#10
Eric A Margulies, Claire E Miller, Yilei Wu, Lin Ma, George C Schatz, Ryan M Young, Michael R Wasielewski
When an assembly of two or more molecules absorbs a photon to form a singlet exciton, and the energetics and intermolecular interactions are favourable, the singlet exciton can rapidly and spontaneously produce two triplet excitons by singlet fission. To understand this process is important because it may prove to be technologically significant for enhancing solar-cell performance. Theory strongly suggests that charge-transfer states are involved in singlet fission, but their role has remained an intriguing puzzle and, up until now, no molecular system has provided clear evidence for such a state...
December 2016: Nature Chemistry
https://www.readbyqxmd.com/read/27872184/functional-variants-in-the-sucrase-isomaltase-gene-associate-with-increased-risk-of-irritable-bowel-syndrome
#11
Maria Henström, Lena Diekmann, Ferdinando Bonfiglio, Fatemeh Hadizadeh, Eva-Maria Kuech, Maren von Köckritz-Blickwede, Louise B Thingholm, Tenghao Zheng, Ghazaleh Assadi, Claudia Dierks, Martin Heine, Ute Philipp, Ottmar Distl, Mary E Money, Meriem Belheouane, Femke-Anouska Heinsen, Joseph Rafter, Gerardo Nardone, Rosario Cuomo, Paolo Usai-Satta, Francesca Galeazzi, Matteo Neri, Susanna Walter, Magnus Simrén, Pontus Karling, Bodil Ohlsson, Peter T Schmidt, Greger Lindberg, Aldona Dlugosz, Lars Agreus, Anna Andreasson, Emeran Mayer, John F Baines, Lars Engstrand, Piero Portincasa, Massimo Bellini, Vincenzo Stanghellini, Giovanni Barbara, Lin Chang, Michael Camilleri, Andre Franke, Hassan Y Naim, Mauro D'Amato
OBJECTIVE: IBS is a common gut disorder of uncertain pathogenesis. Among other factors, genetics and certain foods are proposed to contribute. Congenital sucrase-isomaltase deficiency (CSID) is a rare genetic form of disaccharide malabsorption characterised by diarrhoea, abdominal pain and bloating, which are features common to IBS. We tested sucrase-isomaltase (SI) gene variants for their potential relevance in IBS. DESIGN: We sequenced SI exons in seven familial cases, and screened four CSID mutations (p...
November 21, 2016: Gut
https://www.readbyqxmd.com/read/27872090/mutational-landscape-of-pediatric-acute-lymphoblastic-leukemia
#12
LingWen Ding, Qiao-Yang Sun, Kar-Tong Tan, Wenwen Chien, Anand Mayakonda Thippeswamy, Allen Yeoh Eng Juh, Norihiko Kawamata, Yasunobu Nagata, Jin-Fen Xiao, Xin-Yi Loh, De-Chen Lin, Manoj Garg, Su-Lin Lim, Li-Zhen Liu, Vikas Madan, Yan-Yi Jiang, Liang Xu, Masashi Sanada, Lucia Torres Fernández, Hema Preethi, Michael Lill, Hagop Kantarjian, S M Kornblau, Satoru Miyano, Seishi Ogawa, Der-Cherng Liang, Lee-Yung Shih, Henry Yang, H Phillip Koeffler
Current standard of care for patients with pediatric acute lymphoblastic leukemia (ALL) is mainly effective, with high remission rates after treatment. However, the genetic perturbations that give rise to this disease remain largely undefined, limiting the ability to address resistant tumors or develop less toxic targeted therapies. Here we report the use of next generation sequencing to interrogate the genetic and pathogenic mechanisms of 240 pediatric ALL cases with their matched remission samples. Commonly mutated genes fell into several categories, including RAS/receptor tyrosine kinases, epigenetic regulators, transcription factors involved in lineage commitment and the p53/cell cycle pathway...
November 21, 2016: Cancer Research
https://www.readbyqxmd.com/read/27871407/the-role-of-orthobiologics-in-fracture-healing-and-arthrodesis
#13
REVIEW
Sheldon S Lin, Michael G Yeranosian
Nonunion after tibial shaft fracture and hindfoot arthrodesis remains a major problem. Known risk factors include advanced age, immunosuppression, smoking, and diabetes. Several factors must be considered in the fracture healing process. This review evaluates the efficacy of orthobiologics in improving union rates after fracture or arthrodesis. Use of compounds have shown increased cellular proliferation experimentally. Percutaneous autologous bone marrow has shown increased cellular proliferation. Matrix supplementation has shown significant improvements in bone healing...
December 2016: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/27864344/targeting-tumor-associated-fibroblasts-for-therapeutic-delivery-in-desmoplastic-tumors
#14
Lei Miao, Qi Liu, C Michael Lin, Cong Luo, Yuhua Wang, Lina Liu, Weiyan Yin, Shihao Hu, William Y Kim, Leaf Huang
The off-target distribution of anticancer nanoparticles (NP) to fibroblasts creates a barrier to the effective treatment of desmoplastic tumors. However, we hypothesized that this NP detriment might be exploited to target the expression of secreted cytotoxic proteins from cancer-associated fibroblasts (CAF) as an anticancer strategy. In addressing this hypothesis, plasmids encoding the secretable TNF-related factor sTRAIL were loaded into lipid-coated protamine DNA complexes (LPD) and administered by infusion in a murine xenograft model of human desmoplastic bladder carcinoma...
November 18, 2016: Cancer Research
https://www.readbyqxmd.com/read/27863650/perioperative-considerations-and-complications-in-pediatric-parathyroidectomy
#15
Curtis Hanba, Michael Bobian, Peter F Svider, Anthony Sheyn, Bianca Siegel, Ho-Sheng Lin, S Naweed Raza
OBJECTIVES/HYPOTHESIS: To evaluate perioperative considerations and post-operative complications associated with parathyroidectomy in the pediatric population. METHODS: The Kids' Inpatient Database 21 (KID) was searched for patients who underwent parathyroidectomy in 2009 and 2012. Patient demographics, hospital stay, associated charges, and post-operative adverse sequelae were evaluated in all patients and included patient comorbidity and additional procedure requirement analysis...
December 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27863245/epigenetic-memory-underlies-cell-autonomous-heterogeneous-behavior-of-hematopoietic-stem-cells
#16
Vionnie W C Yu, Rushdia Z Yusuf, Toshihiko Oki, Juwell Wu, Borja Saez, Xin Wang, Colleen Cook, Ninib Baryawno, Michael J Ziller, Eunjung Lee, Hongcang Gu, Alexander Meissner, Charles P Lin, Peter V Kharchenko, David T Scadden
Stem cells determine homeostasis and repair of many tissues and are increasingly recognized as functionally heterogeneous. To define the extent of-and molecular basis for-heterogeneity, we overlaid functional, transcriptional, and epigenetic attributes of hematopoietic stem cells (HSCs) at a clonal level using endogenous fluorescent tagging. Endogenous HSC had clone-specific functional attributes over time in vivo. The intra-clonal behaviors were highly stereotypic, conserved under the stress of transplantation, inflammation, and genotoxic injury, and associated with distinctive transcriptional, DNA methylation, and chromatin accessibility patterns...
November 17, 2016: Cell
https://www.readbyqxmd.com/read/27862459/enantioselective-synthesis-of-n-h-free-1-5-benzothiazepines
#17
Guojin Wang, Yu Tang, Yu Zhang, Xiaohua Liu, Lili Lin, Xiaoming Feng
An enantioselective sulfa-Michael-cyclization reaction was developed for the synthesis of 1,5-benzothiazepines with versatile pharmacological activities. The reaction between 2-aminothiophenol and α,β-unsaturated pyrazoleamides gave direct access to N-H-free 1,5-benzothiazepines in the presence of a chiral N,N'-dioxide/Yb(OTf)3 complex. Excellent enantioselectivities (up to 96 % ee) and high yields (up to 99 %) were obtained for a broad range of substrates under mild reaction conditions. This method provided a facile approach to the antidepressant drug (R)-(-)-Thiazesim...
November 15, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27862352/de-novo-donorspecific-anti-hla-antibodies-after-kidney-transplantation-are-associated-with-impaired-graft-outcome-independently-of-their-c1q-binding-ability
#18
Teresa Kauke, Cornelia Oberhauser, Viviane Lin, Michaela Coenen, Michael Fischereder, Andrea Dick, Ulf Schoenermarck, Markus Guba, Joachim Andrassy, Jens Werner, Bruno Meiser, Martin Angele, Manfred Stangl, Antje Habicht
BACKGROUND: Many aspects of post-transplant monitoring of donorspecific (DSA) and non-donorspecific (nDSA) anti-HLA antibodies on renal allograft survival are still unclear. Differentiating them by their ability to bind C1q may offer a better risk assessment. METHODS: We retrospectively investigated the clinical relevance of de novo C1q-binding anti-HLA antibodies on graft outcome in 611 renal transplant recipients. Acute rejection (AR), renal function and graft survival were assessed within a mean follow-up of 6...
November 18, 2016: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/27862340/everolimus-with-early-withdrawal-or-reduced-dose-calcineurin-inhibitors-improves-renal-function-in-liver-transplant-recipients-a-systematic-review-and-meta-analysis
#19
Michael Lin, Sahil Mittal, Farhad Sahebjam, Abbas Rana, Gagan K Sood
Calcineurin inhibitors (CNI) are the mainstay of immunosuppression after liver transplantation (LT), but CNIs are associated with significant nephrotoxicity. Recently, mTOR inhibitors such as sirolimus and everolimus (EVR) have been used with or without CNIs in LT recipients for their renal-sparing effect. We conducted a systematic review and meta-analysis of randomized controlled trials (RCT) that examined the effect of EVR with CNI minimization or withdrawal on renal function in LT recipients. RCT of primary adult LT recipients with baseline GFR >30 mL/min who received EVR with CNI minimization or withdrawal were included...
November 16, 2016: Clinical Transplantation
https://www.readbyqxmd.com/read/27855642/mutation-of-a-common-amino-acid-in-nkx2-5-results-in-dilated-cardiomyopathy-in-two-large-families
#20
Alan Hanley, Katie A Walsh, Caroline Joyce, Michael A McLellan, Sebastian Clauss, Amaya Hagen, Marisa A Shea, Nathan R Tucker, Honghuang Lin, Gerard J Fahy, Patrick T Ellinor
BACKGROUND: The genetic basis for dilated cardiomyopathy (DCM) can be difficult to determine, particularly in familial cases with complex phenotypes. Next generation sequencing may be useful in the management of such cases. METHODS: We report two large families with pleiotropic inherited cardiomyopathy. In addition to DCM, the phenotypes included atrial and ventricular septal defects, cardiac arrhythmia and sudden death. Probands underwent whole exome sequencing to identify potentially causative variants...
November 17, 2016: BMC Medical Genetics
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