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https://www.readbyqxmd.com/read/27933063/aire-downregulation-is-associated-with-changes-in-the-posttranscriptional-control-of-peripheral-tissue-antigens-in-medullary-thymic-epithelial-cells
#1
Ernna H Oliveira, Claudia Macedo, Cristhianna V Collares, Ana Carolina Freitas, Paula Barbim Donate, Elza T Sakamoto-Hojo, Eduardo A Donadi, Geraldo A Passos
Autoimmune regulator (Aire) is a transcriptional regulator of peripheral tissue antigens (PTAs) and microRNAs (miRNAs) in medullary thymic epithelial cells (mTECs). In this study, we tested the hypothesis that Aire also played a role as an upstream posttranscriptional controller in these cells and that variation in its expression might be associated with changes in the interactions between miRNAs and the mRNAs encoding PTAs. We demonstrated that downregulation of Aire in vivo in the thymuses of BALB/c mice imbalanced the large-scale expression of these two RNA species and consequently their interactions...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27932881/preparation-and-antitumor-evaluation-of-self-assembling-oleanolic-acid-loaded-pluronic-p105-d-%C3%AE-tocopheryl-polyethylene-glycol-succinate-mixed-micelles-for-non-small-cell-lung-cancer-treatment
#2
Hao Wu, Qingxiang Zhong, Rongling Zhong, Houcai Huang, Zhi Xia, Zhongcheng Ke, Zhenhai Zhang, Jie Song, Xiaobin Jia
Oleanolic acid (OA) is a triterpenoid found in various fruits and vegetables and used in traditional Chinese medicine. OA plays a crucial role in the treatment of several cancers, but poor water solubility, low permeability, and significant efflux have limited its widespread clinical use. Vitamin E-d-α-tocopheryl polyethylene glycol succinate (vitamin E-TPGS) and Pluronic P105 were used to improve the solubility and permeability and to decrease the efflux of OA. OA-loaded mixed micelles were prepared by ethanol thin-film hydration...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27932699/a-systematic-investigation-of-the-best-buffers-for-use-in-screening-by-maldi-mass-spectrometry
#3
Jessica Chandler, Carl Haslam, Neil Hardy, Melanie Leveridge, Peter Marshall
Matrix-assisted laser desorption/ionization-mass spectrometry (MALDI-MS) offers a label-free alternative for the screening of biochemical targets in both 1536- and 6144-assay formats, as well as potentially providing increased sensitivity, reproducibility, and the simultaneous detection of multiple assay components within a specified m/z range. Ion suppression effects are one of the principal limitations reported for MS analysis. Within MALDI-MS screening, it has been identified that certain biochemical components incorporated into the assay (e...
December 8, 2016: Journal of Biomolecular Screening
https://www.readbyqxmd.com/read/27932085/development-of-a-sensitive-and-false-positive-free-pma-qpcr-viability-assay-to-quantify-vbnc-escherichia-coli-and-evaluate-disinfection-performance-in-wastewater-effluent
#4
Richard Kibbee, Banu Örmeci
The detection and quantification of viable Escherichia coli cells in wastewater treatment plant effluent is very important as it is the main disinfection efficacy parameter for assessing its public health risk and environmental impact. The aim of this study was to develop a sensitive and false-positive free propidium monoazide-quantitative polymerase chain reaction (PMA-qPCR) assay to quantify the viable but non-culturable (VBNC) E. coli present in secondary wastewater effluent after chlorine disinfection. The qPCR target was the E...
December 5, 2016: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/27931177/cholinesterase-inhibitory-anti-amyloidogenic-and-neuroprotective-effect-of-the-medicinal-plant-grewia-tiliaefolia-an-in-vitro-and-in-silico-study
#5
Dicson Sheeja Malar, Rajamohamed Beema Shafreen, Shunmugiah Karutha Pandian, Kasi Pandima Devi
CONTEXT: Grewia tiliaefolia Vahl. (Tiliaceae) is a sub-tropical plant used as an indigenous medicine in India. However, its efficacy has not been evaluated against Alzheimer's disease. OBJECTIVES: The objective of this study is to evaluate cholinesterase inhibitory, anti-aggregation and neuroprotective activity of G. tiliaefolia. MATERIALS AND METHOD: Grewia tiliaefolia leaves were collected from Eastern Ghats region, India, and subjected to successive extraction (petroleum ether, chloroform, ethyl acetate, methanol and water)...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27930865/surrogate-outcome-measures-of-in-vitro-osteoclast-resorption-of-%C3%AE-tricalcium-phosphate
#6
Susan A Clarke, Joanne Martin, John Nelson, Jean-Christophe Hornez, Marc Bohner, Nicholas Dunne, Fraser Buchanan
Introduction of porosity to calcium phosphate scaffolds for bone repair has created a new challenge when measuring bioresorption in vitro, rendering traditional outcome measures redundant. The aim of this study is to identify a surrogate endpoint for use with 3D scaffolds. Murine RAW 264.7 cells are cultured on dense discs of β-tricalcium phosphate in conditions to stimulate osteoclast (OC) formation. Multinucleated OCs are visible from day 6 with increases at days 8 and 10. Resorption pits are first observed at day 6 with much larger pits visible at days 8, 10, and 12...
December 8, 2016: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/27927082/effects-of-%C3%AE-caryophyllene-and-murraya-paniculata-essential-oil-in-the-murine-hepatoma-cells-and-in-the-bacteria-and-fungi-24-h-time-kill-curve-studies
#7
Maria Cipriano Selestino Neta, Catia Vittorazzi, Aline Cristina Guimarães, João Damasceno Lopes Martins, Marcio Fronza, Denise Coutinho Endringer, Rodrigo Scherer
CONTEXT: Orange Jessamine [Murraya paniculata L. (Rutaceae)] has been used worldwide in folk medicine as an anti-inflammatory, antibiotic and analgesic. OBJECTIVE: The objective of this study is to investigate the in vitro antioxidant, cytotoxic, antibacterial and antifungal activity and the time-kill curve studies of orange jessamine essential oil and β-caryophyllene, as well as the chemical composition of the essential oil. MATERIAL AND METHODS: The cytotoxic activity of M...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27925196/sirt1-sirt3-axis-regulates-cellular-response-to-oxidative-stress-and-etoposide
#8
Ilaria Carnevale, Laura Pellegrini, Patrizia D'Aquila, Serena Saladini, Emanuela Lococo, Lucia Polletta, Enza Vernucci, Eleonora Foglio, Stefano Coppola, Luigi Sansone, Giuseppe Passarino, Dina Bellizzi, Matteo A Russo, Massimo Fini, Marco Tafani
Sirtuins are conserved NAD+-dependent deacylases. SIRT1 is a nuclear and cytoplasmic sirtuin involved in the control of histones a transcription factors function. SIRT3 is a mitochondrial protein, which regulates mitochondrial function. Although both SIRT1 and SIRT3 have been implicated in resistance to cellular stress, the link between these two sirtuins has not been studied so far. Here we aimed to unravel: i) the role of SIRT1-SIRT3 axis for cellular response to oxidative stress and DNA damage; ii) how mammalian cells modulate such SIRT1-SIRT3 axis and which mechanisms are involved...
December 7, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27925007/viability-in-vitro-differentiation-and-molecular-characterization-of-equine-adipose-tissue-derived-mesenchymal-stem-cells-cryopreserved-in-serum-and-serum-free-medium
#9
B Merlo, S Pirondi, E Iacono, B Rossi, F Ricci, G Mari
BACKGROUND: The effect of freezing-thawing equine adipose tissue-derived mesenchymal stem cells (eATMSCs) have been poorly investigated. OBJECTIVE: This study is to test the influence of cryopreservation solution and temperature when adding the cryoprotectant for freezing eATMSCs, and to investigate the effects of cryopreservation on their stemness features. MATERIALS AND METHODS: Four freezing protocols were evaluated. Viability and proliferation ability of cryopreserved cells were investigated by MTT assay...
July 2016: Cryo Letters
https://www.readbyqxmd.com/read/27924588/antioxidant-micronutrients-and-oxidative-stress-biomarkers
#10
Iain L C Chapple, Helen R Griffiths, Mike R Milward, Martin R Ling, Melissa M Grant
Chronic inflammatory diseases are the major causes of mortality in humans and recent research has improved our understanding of the major impact of life-style factors upon inflammatory diseases and conditions. One of the most influential of these is nutrition, which may drive both pro-inflammatory as well as anti-inflammatory cascades at molecular and cellular levels. There are a variety of model systems that may be employed to investigate the impact of micronutrients and macronutrients upon inflammatory pathways, many of which operate through oxidative stress, either at the level of controlling the redox state of the cell and downstream redox-regulated gene transcription factors, and other acting as free radical generating or scavenging agents...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27923017/expression-of-microrna-328-functions-as-a-biomarker-for-recurrence-of-early-gastric-cancer-egc-after-endoscopic-submucosal-dissection-esd-by-modulating-cd44
#11
Hui-Guang Xue, Ai-Hua Yang, Xue-Guo Sun, Yan-Yan Lu, Zi-Bin Tian
BACKGROUND This study investigated the molecular mechanism of the effect of CD44 on the recurrence of EGC after ESD, including the potential regulator and signaling pathways of CD44. MATERIAL AND METHODS We searched the miRNA online database (www.mirdb.org) with the "seed sequence" located within the 3'-UTR of the target gene, and performed luciferase assay to test the miRNA/mRNA relationship. We also determined the expression of CD44 in the EGC and control samples. In addition, statistical analysis was used to explore the role of miR-328 as a biomarker to predict the recurrence after ECD...
December 6, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27921099/thermoresponsive-microgels-containing-trehalose-as-soft-matrices-for-3d-cell-culture
#12
Małgorzata Burek, Sylwia Waśkiewicz, Anna Lalik, Sebastian Student, Tadeusz Bieg, Ilona Wandzik
A series of thermoresponsive glycomicrogels with trehalose in the cross-links or with trehalose in the cross-links and as pending moieties was synthesized. These materials were obtained by surfactant-free precipitation copolymerization of N-isopropylacrylamide and various amounts of trehalose monomers. The resultant particles showed a spherical shape and a submicrometer hydrodynamic size with a narrow size distribution. At 25 °C, glycomicrogels in solutions with physiological ionic strength formed stable colloids, which further gelled upon heating to physiological temperature forming a macroscopic hydrogel with an interconnected porous structure...
December 6, 2016: Biomaterials Science
https://www.readbyqxmd.com/read/27919627/randomized-phase-2-trial-of-pharmacodynamic-separation-of-pemetrexed-and-intercalated-erlotinib-versus-pemetrexed-alone-for-advanced-nonsquamous-non-small-cell-lung-cancer
#13
Tianhong Li, Bilal Piperdi, William V Walsh, Mimi Kim, Laurel A Beckett, Rasim Gucalp, Missak Haigentz, Venu G Bathini, Huiyu Wen, Kaili Zhou, Patricia B Pasquinelli, Srikanth Gajavelli, Meera Sreedhara, Xianhong Xie, Primo N Lara, David R Gandara, Roman Perez-Soler
BACKGROUND: Pharmacodynamic separation of pemetrexed and erlotinib avoids negative cellular interactions and results in antitumor synergy in erlotinib-resistant non-small-cell lung cancer (NSCLC) cells, independent of EGFR (epidermal growth factor receptor) genotype. PATIENTS AND METHODS: Patients with platinum-treated metastatic nonsquamous NSCLC were randomly assigned 1:2 to pemetrexed alone (500 mg/m(2) provided intravenously on day 1) or pemetrexed followed by erlotinib (150 mg provided orally once daily on days 2-17) every 21 days...
October 28, 2016: Clinical Lung Cancer
https://www.readbyqxmd.com/read/27918018/a-planar-model-of-the-vessel-wall-from-cellularized-collagen-scaffolds-focus-on-cell-matrix-interactions-in-mono-bi-and-tri-culture-models
#14
Caroline Loy, Sébastien Meghezi, Lucie Lévesque, Daniele Pezzoli, Heena Kumra, Dieter Reinhardt, Jayachandran N Kizhakkedathu, Diego Mantovani
The acquisition of new thorough knowledge on the interactions existing between vascular cells would represent a step forward in the engineering of vascular tissues. In this light, herein we designed a physiological-like tri-culture in vitro vascular wall model using a planar cellularized collagen gel as the scaffold. The model can be obtained in 24 h and features multi-layered hierarchical organization composed of a fibroblast-containing adventitia-like layer, a media-like layer populated by smooth muscle cells and an intima-like endothelial cell monolayer...
December 5, 2016: Biomaterials Science
https://www.readbyqxmd.com/read/27917701/design-synthesis-mtt-assay-dna-interaction-studies-of-platinum-ii-complexes
#15
Miral V Lunagariya, Khyati P Thakor, Bhargav N Waghela, Foram U Vaidya, Chadramani Pathak, Mohan N Patel
The square planar Pt(II) complexes of the type [Pt(L(n))(Cl2)] (where L(n) = L(1-3) = thiophene-2-carboxamide derivatives and L(4-6) = thiophene-2-carbothioamide derivatives) have been synthesized and characterized by physicochemical and various spectroscopic studies. MIC method was employed to inference the antibacterial potency of complexes in reference to free ligands and metal salt. Characteristic binding constant (Kb) and binding mode of complexes with calf thymus DNA (CT-DNA) were determined using absorption titration (0...
December 4, 2016: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/27917369/management-of-multiple-myeloma-and-usage-of-bortezomib-perspective-from-india-and-ukraine
#16
Amit Garg, Mykhaylo Morgunskyy, Yogesh Belagali, Namita Gupta, Shyam Prasad Akku
Novel treatment strategies have remarkably improved the multiple myeloma (MM) patients' survival, with associated increased costs. A joint panel meet of international experts from India and Ukraine was held in New Delhi on May 19, 2016 focusing on MM management, bortezomib role, unmet medical needs, and current challenges. The health-care system for oncology in India is majorly private vs. government-based in Ukraine. In India, electrophoresis, serum-free light chain assays, bone marrow tests, and X-rays are available modes of diagnosis...
2016: Frontiers in Oncology
https://www.readbyqxmd.com/read/27916887/cucumber-metallothionein-like-2-csmtl2-exhibits-metal-binding-properties
#17
Yu Pan, Yanglu Pan, Junpeng Zhai, Yan Xiong, Jinhua Li, Xiaobing Du, Chenggang Su, Xingguo Zhang
We identified a novel member of the metallothionein (MT) family, Cucumis sativus metallothionein-like 2 (CsMTL2), by screening a young cucumber fruit complementary DNA (cDNA) library. The CsMTL2 encodes a putative 77-amino acid Class II MT protein that contains two cysteine (Cys)-rich domains separated by a Cys-free spacer region. We found that CsMTL2 expression was regulated by metal stress and was specifically induced by Cd(2+) treatment. We investigated the metal-binding characteristics of CsMTL2 and its possible role in the homeostasis and/or detoxification of metals by heterologous overexpression in Escherichia coli cells...
November 30, 2016: Genes
https://www.readbyqxmd.com/read/27916828/enhancing-anticancer-effect-of-gefitinib-across-the-blood-brain-barrier-model-using-liposomes-modified-with-one-%C3%AE-helical-cell-penetrating-peptide-or-glutathione-and-tween-80
#18
Kuan-Hung Lin, Shu-Ting Hong, Hsiang-Tsui Wang, Yu-Li Lo, Anya Maan-Yuh Lin, James Chih-Hsin Yang
Epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKI), such as gefitinib, have been demonstrated to effectively treat the patients of extracranial non-small cell lung cancer (NSCLC). However, these patients often develop brain metastasis (BM) during their disease course. The major obstacle to treat BM is the limited penetration of anticancer drugs across the blood-brain barrier (BBB). In the present study, we utilized gefitinib-loaded liposomes with different modifications to improve gefitinib delivery across the in vitro BBB model of bEnd...
November 29, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27916791/different-phases-of-breast-cancer-cells-raman-study-of-immortalized-transformed-and-invasive-cells
#19
Deepika Chaturvedi, Sai A Balaji, Vinay Kumar Bn, Freek Ariese, Siva Umapathy, Annapoorni Rangarajan
Breast cancer is the most prevalent cause of cancer-associated death in women the world over, but if detected early it can be treated successfully. Therefore, it is important to diagnose this disease at an early stage and to understand the biochemical changes associated with cellular transformation and cancer progression. Deregulated lipid metabolism has been shown to contribute to cell transformation as well as cancer progression. In this study, we monitored the biomolecular changes associated with the transformation of a normal cell into an invasive cell associated with breast cancer using Raman microspectroscopy...
November 28, 2016: Biosensors
https://www.readbyqxmd.com/read/27915165/re-assessing-gallium-67-as-a-therapeutic-radionuclide
#20
Muhamad F Bin Othman, Nabil R Mitry, Valerie J Lewington, Philip J Blower, Samantha Y A Terry
INTRODUCTION: Despite its desirable half-life and low energy Auger electrons that travel further than for other radionuclides, (67)Ga has been neglected as a therapeutic radionuclide. Here, (67)Ga is compared with Auger electron emitter (111)In as a potential therapeutic radionuclide. METHODS: Plasmid pBR322 studies allowed direct comparison between (67)Ga and (111)In (1MBq) in causing DNA damage, including the effect of chelators (EDTA and DTPA) and the effects of a free radical scavenger (DMSO)...
October 29, 2016: Nuclear Medicine and Biology
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