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https://www.readbyqxmd.com/read/28720897/a-predictive-mathematical-modeling-approach-for-the-study-of-doxorubicin-treatment-in-triple-negative-breast-cancer
#1
Matthew T McKenna, Jared A Weis, Stephanie L Barnes, Darren R Tyson, Michael I Miga, Vito Quaranta, Thomas E Yankeelov
Doxorubicin forms the basis of chemotherapy regimens for several malignancies, including triple negative breast cancer (TNBC). Here, we present a coupled experimental/modeling approach to establish an in vitro pharmacokinetic/pharmacodynamic model to describe how the concentration and duration of doxorubicin therapy shape subsequent cell population dynamics. This work features a series of longitudinal fluorescence microscopy experiments that characterize (1) doxorubicin uptake dynamics in a panel of TNBC cell lines, and (2) cell population response to doxorubicin over 30 days...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28718278/matrix-stiffness-differentially-regulates-cellular-uptake-behavior-of-nanoparticles-in-two-breast-cancer-cell-lines
#2
Yu Wang, Tao Gong, Zhirong Zhang, Yao Fu
Matrix stiffness regulates cell behavior in various biological contexts. In breast tumors, the deposition of extracellular matrix (ECM) correlates with increasing matrix stiffness and poor survival. Nanoparticulate carriers represent a promising therapeutic vehicle for disease diagnosis and efficient anticancer drug delivery. However, how matrix stiffness influences cellular uptake of nanoparticle remains largely unexplored. Here, we selected photopolymerized polyacrylamide gels with varying stiffness as model substrates, and studied the impact of matrix stiffness on cell morphology, nanoparticle uptake efficiency in two representative breast cancer cell lines with varying invasiveness, i...
July 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28715794/an-introduction-to-the-emergency-department-adult-clinical-escalation-protocol-ed-ace
#3
Eoin Coughlan, Una Geary, Abel Wakai, Ronan O'Sullivan, John Browne, Eilish McAuliffe, Marie Ward, Fiona McDaid, Conor Deasy
PURPOSE OF THE STUDY: This study demonstrates how a participatory action research approach was used to address the challenge of the early and effective detection of the deteriorating patient in the ED setting. The approach enabled a systematic approach to patient monitoring and escalation of care to be developed to address the wide-ranging spectrum of undifferentiated presentations and the phases of ED care from triage to patient admission. This paper presents a longitudinal patient monitoring system, which aims to provide monitoring and escalation of care, where necessary, of adult patients from triage to admission to hospital in a manner that is feasible in the unique ED environment...
November 14, 2016: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/28714277/free-fatty-acid-receptor-3-activation-suppresses-neurogenic-motility-in-rat-proximal-colon
#4
I Kaji, Y Akiba, T Furuyama, D W Adelson, K Iwamoto, M Watanabe, A Kuwahara, J D Kaunitz
BACKGROUND: Short-chain fatty acids (SCFA) are microbial fermentation products absorbed by the colon. We recently reported that activation of the SCFA receptor termed free fatty acid receptor 3 (FFA3), expressed on cholinergic nerves, suppresses nicotinic acetylcholine receptor (nAChR)-mediated transepithelial anion secretion. This study aimed to clarify how activation of neurally expressed FFA3 affects colonic motor function. METHODS: FFA3-expressing myenteric neurons were identified by immunostaining; contractions of isolated circular muscle strips obtained from rat proximal colon were measured by isometric transducers...
July 17, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28702908/water-quality-and-health-in-northern-canada-stored-drinking-water-and-acute-gastrointestinal-illness-in-labrador-inuit
#5
Carlee J Wright, Jan M Sargeant, Victoria L Edge, James D Ford, Khosrow Farahbakhsh, Inez Shiwak, Charlie Flowers, Sherilee L Harper
One of the highest self-reported incidence rates of acute gastrointestinal illness (AGI) in the global peer-reviewed literature occurs in Inuit communities in the Canadian Arctic. This high incidence of illness could be due, in part, to the consumption of contaminated water, as many northern communities face challenges related to the quality of municipal drinking water. Furthermore, many Inuit store drinking water in containers in the home, which could increase the risk of contamination between source and point-of-use (i...
July 12, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28697652/ask-the-experts-how-to-treat-individuals-with-spatial-neglect-a-survey-study
#6
Peii Chen, Marco Pitteri, Glen Gillen, Harsha Ayyala
PURPOSE: Spatial neglect (SN) impedes rehabilitation success and leaves long-term consequences. We asked experts to provide their opinions in addressing SN by scenario (ideal vs. reality) and by recovery phase (earliest, acute, subacute, and chronic). Experts were individuals who have assessed or treated patients with SN clinically. MATERIALS AND METHODS: This study was conducted using an anonymous survey on the Internet with 189 responders over 3 months. Located in 23 different countries, 127 experts of seven disciplines were included (occupational therapy, physical therapy, nursing, speech and language pathology or therapy, neurology, physical medicine and rehabilitation, and psychology or neuropsychology)...
July 11, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28696210/role-of-chromosomal-instability-in-cancer-progression
#7
Sarah E McClelland
Cancer cells often display chromosomal instability (CIN), a defect that involves loss or rearrangement of the cell's genetic material - chromosomes - during cell division (Lengauer, et al. 1998; McGranahan, et al. 2012). This process results in the generation of aneuploidy, a deviation from the haploid number of chromosomes, and structural alterations of chromosomes in over 90% of solid tumours and many haematological cancers (Mitelman). This trait is unique to cancer cells as normal cells in the body generally strictly maintain the correct number and structure of chromosomes...
July 10, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28695374/impact-of-aromaticity-on-anticancer-activity-of-polypyridyl-ruthenium-ii-complexes-synthesis-structure-dna-protein-binding-lipophilicity-and-anticancer-activity
#8
Petar Čanović, Ana Rilak Simović, Snežana Radisavljević, Ioannis Bratsos, Nicola Demitri, Marina Mitrović, Ivanka Zelen, Živadin D Bugarčić
With the aim of assessing how the aromaticity of the inert chelating ligand can influence the activity of ruthenium(II) polypyridyl complexes, two new monofunctional ruthenium(II) complexes, [Ru(Cl-Ph-tpy)(phen)Cl]Cl (1) and [Ru(Cl-Ph-tpy)(o-bqdi)Cl]Cl (2) (where Cl-Ph-tpy = 4'-(4-chlorophenyl)-2,2':6',2″-terpyridine, phen = 1,10-phenanthroline, o-bqdi = o-benzoquinonediimine), were synthesized. All complexes were fully characterized by elemental analysis and spectroscopic techniques (IR, UV-Vis, 1D and 2D NMR, XRD)...
July 10, 2017: Journal of Biological Inorganic Chemistry: JBIC
https://www.readbyqxmd.com/read/28688779/formulation-stabilisation-and-encapsulation-of-bacteriophage-for-phage-therapy
#9
REVIEW
Danish J Malik, Ilya J Sokolov, Gurinder K Vinner, Francesco Mancuso, Salvatore Cinquerrui, Goran T Vladisavljevic, Martha R J Clokie, Natalie J Garton, Andrew G F Stapley, Anna Kirpichnikova
Against a backdrop of global antibiotic resistance and increasing awareness of the importance of the human microbiota, there has been resurgent interest in the potential use of bacteriophages for therapeutic purposes, known as phage therapy. A number of phage therapy phase I and II clinical trials have concluded, and shown phages don't present significant adverse safety concerns. These clinical trials used simple phage suspensions without any formulation and phage stability was of secondary concern. Phages have a limited stability in solution, and undergo a significant drop in phage titre during processing and storage which is unacceptable if phages are to become regulated pharmaceuticals, where stable dosage and well defined pharmacokinetics and pharmacodynamics are de rigueur...
May 14, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28688344/finding-the-way-forward-for-forensic-science-in-the-us-a-commentary-on-the-pcast-report
#10
REVIEW
I W Evett, C E H Berger, J S Buckleton, C Champod, G Jackson
A recent report by the US President's Council of Advisors on Science and Technology (PCAST), (2016) has made a number of recommendations for the future development of forensic science. Whereas we all agree that there is much need for change, we find that the PCAST report recommendations are founded on serious misunderstandings. We explain the traditional forensic paradigms of match and identification and the more recent foundation of the logical approach to evidence evaluation. This forms the groundwork for exposing many sources of confusion in the PCAST report...
June 26, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28687462/the-effect-of-tiotropium-in-combination-with-olodaterol-on-house-dust-mite-induced-allergic-airway-disease
#11
Gerrit John-Schuster, Stan de Kleijn, Yolanda van Wijck, Veerle Kremer, Hermelijn H Smits, Michael P Pieper, Pieter S Hiemstra, Christian Taube
One of the major goals of asthma therapy is to maintain asthma control and prevent acute exacerbations. Long-acting bronchodilators are regularly used for the treatment of asthma patients and in clinical studies the anti-cholinergic tiotropium has recently been shown to reduce exacerbations in patients with asthma. So far it is unclear how tiotropium exerts this effect. For this purpose, we designed an allergen-driven rechallenge model of allergic airway inflammation in mice, to assess the effectiveness of tiotropium and the long-acting β-2 adrenoceptor agonist olodaterol on allergen-induced exacerbations of airway disease...
July 4, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28679737/how-i-treat-first-relapse-of-myeloma
#12
Jean Luc Harousseau, Michel Attal
The standard treatment of relapsed multiple myeloma (MM) was either lenalidomide-dexamethasone (RD) or bortezomib-dexamethasone (VD) but it is changing rapidly for two reasons. Firstly lenalidomide and bortezomib are currently used in frontline treatment and many patients become resistant to these agents early in the course of their disease. Secondly six second-line new agents have been recently developed and offer new possibilities (pomalidomide, carfilzomib and ixazomib, panobinostat, elotuzumab and daratumumab)...
July 5, 2017: Blood
https://www.readbyqxmd.com/read/28675879/three-methods-for-integration-of-environmental-risk-into-the-benefit-risk-assessment-of-veterinary-medicinal-products
#13
Jennifer L Chapman, Lucas Porsch, Rodrigo Vidaurre, Thomas Backhaus, Chris Sinclair, Glyn Jones, Alistair B A Boxall
Veterinary medicinal products (VMPs) require, as part of the European Union (EU) authorization process, consideration of both risks and benefits. Uses of VMPs have multiple risks (e.g., risks to the animal being treated, to the person administering the VMP) including risks to the environment. Environmental risks are not directly comparable to therapeutic benefits; there is no standardized approach to compare both environmental risks and therapeutic benefits. We have developed three methods for communicating and comparing therapeutic benefits and environmental risks for the benefit-risk assessment that supports the EU authorization process...
July 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28668695/-what-constitutes-a-problem-producing-alcohol-problems-through-online-counselling-encounters
#14
Michael Savic, Nyssa Ferguson, Victoria Manning, Ramez Bathish, Dan I Lubman
Typically, health policy, practice and research views alcohol and other drug (AOD) 'problems' as objective things waiting to be detected, diagnosed and treated. However, this approach to policy development and treatment downplays the role of clinical practices, tools, discourses, and systems in shaping how AOD use is constituted as a 'problem'. For instance, people might present to AOD treatment with multiple psycho-social concerns, but usually only a singular AOD-associated 'problem' is considered serviceable...
June 29, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28667669/optogenetic-stimulation-of-dentate-gyrus-engrams-restores-memory-in-alzheimer-s-disease-mice
#15
Jennifer N Perusini, Stephanie A Cajigas, Omid Cohensedgh, Sean C Lim, Ina P Pavlova, Zoe R Donaldson, Christine A Denny
Alzheimer's disease (AD) is a prevalent neurodegenerative disorder characterized by amyloid-beta (Aβ) plaques and tau neurofibrillary tangles. APPswe/PS1dE9 (APP/PS1) mice have been developed as an AD model and are characterized by plaque formation at 4-6 months of age. Here, we sought to better understand AD-related cognitive decline by characterizing various types of memory. In order to better understand how memory declines with AD, APP/PS1 mice were bred with ArcCreER(T2) mice. In this line, neural ensembles activated during memory encoding can be indelibly tagged and directly compared with neural ensembles activated during memory retrieval (i...
July 1, 2017: Hippocampus
https://www.readbyqxmd.com/read/28659496/secretion-of-interleukin-6-by-bone-marrow-mesenchymal-stem-cells-promotes-metastasis-in-hepatocellular-carcinoma
#16
Fei Mi, Liansheng Gong
Mesenchymal stem cells (MSCs) interact with tumor cells and regulate tumorigenesis and metastasis. As one of the important components of the tumor microenvironment, MSC-secreted cytokines play a critical role in cancer development. However, whether and how bone marrow MSCs (BMSCs) and their secreted cytokines participate in hepatocellular carcinoma (HCC) progression, still remains largely unknown. In the present study, we first measured the concentration of interleukin-6 (IL-6) in BMSC conditioned medium (BMSC-CM)...
June 28, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28658295/coral-reef-fish-predator-maintains-olfactory-acuity-in-degraded-coral-habitats
#17
Michael Natt, Oona M Lönnstedt, Mark I McCormick
Coral reefs around the world are rapidly degrading due to a range of environmental stressors. Habitat degradation modifies the sensory landscape within which predator-prey interactions occur, with implications for olfactory-mediated behaviours. Predator naïve settlement-stage damselfish rely on conspecific damage-released odours (i.e., alarm odours) to inform risk assessments. Yet, species such as the Ambon damselfish, Pomacentrus amboinensis, become unable to respond appropriately to these cues when living in dead-degraded coral habitats, leading to increased mortality through loss of vigilance...
2017: PloS One
https://www.readbyqxmd.com/read/28655088/-how-i-treat-immunoglobulin-light-chain-amyloido-sis
#18
J Du, J Hou
No abstract text is available yet for this article.
June 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28655087/-how-i-treat-young-patients-with-multiple-myeloma
#19
J Li
No abstract text is available yet for this article.
June 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28653617/replication-study-inhibition-of-bet-recruitment-to-chromatin-as-an-effective-treatment-for-mll-fusion-leukaemia
#20
Xiaochuan Shan, Juan Jose Fung, Alan Kosaka, Gwenn Danet-Desnoyers
In 2015, as part of the Reproducibility Project: Cancer Biology, we published a Registered Report (Fung et al., 2015), that described how we intended to replicate selected experiments from the paper "Inhibition of BET recruitment to chromatin as an effective treatment for MLL-fusion leukaemia" (Dawson et al., 2011). Here, we report the results of those experiments. We found treatment of MLL-fusion leukaemia cells (MV4;11 cell line) with the BET bromodomain inhibitor I-BET151 resulted in selective growth inhibition, whereas treatment of leukaemia cells harboring a different oncogenic driver (K-562 cell line) did not result in selective growth inhibition; this is similar to the findings reported in the original study (Figure 2A and Supplementary Figure 11A,B; Dawson et al...
June 27, 2017: ELife
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