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https://www.readbyqxmd.com/read/28481116/overcoming-the-road-blocks-advancement-of-block-copolymer-micelles-for-cancer-therapy-in-the-clinic
#1
Loujin Houdaihed, James C Evans, Christine Allen
With countless preclinical studies on block copolymer micelles (BCMs) successfully demonstrating the superiority of these advanced drug delivery formulations over conventional formulations, it remains somehow discouraging that only a few have reached clinical evaluation and practice. With a critical eye, this review aims to compare and summarize the preclinical and clinical data available on several BCM formulations and to identify their primary role in drug delivery as "carrier" or "solubilizer". This review focuses on polymeric micelles that have reached clinical evaluation and/or are being pursued commercially...
May 18, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28465219/differences-in-body-composition-according-to-gross-motor-function-in-children-with-cerebral-palsy
#2
Ki Hyuk Sung, Chin Youb Chung, Kyoung Min Lee, Byung Chae Cho, Seung Jun Moon, Jaeyoung Kim, Moon Seok Park
OBJECTIVES: To assess differences in body composition according to gross motor function in children with cerebral palsy (CP) compared to healthy controls. DESIGN: Retrospective case control study. SETTING: Tertiary referral center for CP PARTICIPANTS: One hundred consecutive patients (mean age, 11.5 ± 4.2 years) with CP who were admitted for orthopedic surgery between May 2014 and March 2016 and 46 typically developing children (TDC, control group) were included...
April 29, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28465075/carbon-nanotube-capsules-enhance-the-in-vivo-efficacy-of-cisplatin
#3
Adem Guven, Gabriel J Villares, Susan G Hilsenbeck, Alaina Lewis, John D Landua, Lacey E Dobrolecki, Lon J Wilson, Michael T Lewis
Over the past few years, numerous nanotechnology-based drug delivery systems have been developed in an effort to maximize therapeutic effectiveness of conventional drug delivery, while limiting undesirable side effects. Among these, carbon nanotubes (CNTs) are of special interest as potential drug delivery agents due to their numerous unique and advantageous physical and chemical properties. Here, we show in vivo favorable biodistribution and enhanced therapeutic efficacy of cisplatin (CDDP) encapsulated within ultra-short single-walled carbon nanotube capsules (CDDP@US-tubes) using three different human breast cancer xenograft models...
April 29, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28448447/factors-associated-with-decreased-lean-tissue-index-in-patients-with-chronic-kidney-disease
#4
Yi-Wen Wang, Ting-Yun Lin, Ching-Hsiu Peng, Jui-Lin Huang, Szu-Chun Hung
Muscle wasting is common and is associated with increased morbidity and mortality in patients with chronic kidney disease (CKD). However, factors associated with decreased muscle mass in CKD patients are seldom reported. We performed a cross-sectional study of 326 patients (age 65.8 ± 13.3 years) with stage 3-5 CKD who were not yet on dialysis. Muscle mass was determined using the Body Composition Monitor (BCM), a multifrequency bioimpedance spectroscopy device, and was expressed as the lean tissue index (LTI, lean tissue mass/height²)...
April 27, 2017: Nutrients
https://www.readbyqxmd.com/read/28426660/exhaustive-search-of-linear-information-encoding-protein-peptide-recognition
#5
Abdellali Kelil, Benjamin Dubreuil, Emmanuel D Levy, Stephen W Michnick
High-throughput in vitro methods have been extensively applied to identify linear information that encodes peptide recognition. However, these methods are limited in number of peptides, sequence variation, and length of peptides that can be explored, and often produce solutions that are not found in the cell. Despite the large number of methods developed to attempt addressing these issues, the exhaustive search of linear information encoding protein-peptide recognition has been so far physically unfeasible...
April 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28399948/method-for-estimating-the-charge-density-distribution-on-a-dielectric-surface
#6
Takuya Nakashima, Hiroyuki Suhara, Hidekazu Murata, Hiroshi Shimoyama
High-quality color output from digital photocopiers and laser printers is in strong demand, motivating attempts to achieve fine dot reproducibility and stability. The resolution of a digital photocopier depends on the charge density distribution on the organic photoconductor surface; however, directly measuring the charge density distribution is impossible. In this study, we propose a new electron optical instrument that can rapidly measure the electrostatic latent image on an organic photoconductor surface, which is a dielectric surface, as well as a novel method to quantitatively estimate the charge density distribution on a dielectric surface by combining experimental data obtained from the apparatus via a computer simulation...
April 12, 2017: Microscopy and Microanalysis
https://www.readbyqxmd.com/read/28383400/protocol-of-randomized-control-trial-for-effectiveness-of-angiotensin-receptor-blockers-on-blood-pressure-control-among-euvolemic-hypertensive-hemodialysis-patients
#7
RANDOMIZED CONTROLLED TRIAL
Raja Ahsan Aftab, Amer Hayat Khan, Syed Azhar Syed Sulaiman, Tahir Mehmood Khan, Azreen Syazril Adnan
INTRODUCTION: Volume overload and the renin-aldosterone-angiotensin system (RAAS) are 2 major factors contributing to hypertension (HTN) among hemodialysis (HD) patients. Although volume-dependent components of HTN can be corrected by appropriate volume removal, a proportion of HD patients experience elevated blood pressure (BP) despite achieving euvolemic and ideal dry weight. METHOD AND ANALYSIS: A single center, prospective, randomized, parallel design, single-blind trial will be conducted in the Malaysian state of Kelantan among postdialysis euvolemic hypertensive patients that are on regular dialysis at least 3 times a week...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28376497/long-term-weight-loss-maintenance-by-a-meal-replacement-based-weight-management-program-in-primary-care
#8
Renate Kruschitz, Sandra Wallner-Liebmann, Harald Lothaller, Maria Luger, Bernhard Ludvik
OBJECTIVE: Structured obesity treatment programs at primary care level are becoming increasingly important. However, evidence from current treatment approaches in the long term is lacking. In view of this fact we evaluated a standardized, meal replacement-based weight loss program (myLINE®; AENGUS, Graz, Austria) according to the currently applicable guidelines. METHODS: Data of overweight and obese individuals (n = 70) who participated at least 36 months in the program were analyzed...
2017: Obesity Facts
https://www.readbyqxmd.com/read/28367400/association-of-body-composition-assessed-by-bioelectrical-impedance-analysis-with-metabolic-risk-factor-clustering-among-middle-aged-chinese
#9
Linfeng Zhang, Zengwu Wang, Zuo Chen, Xin Wang, Manlu Zhu
Body composition monitor (BCM) based on the bioelectric impedance analysis is very convenient to use. However, whether percentage body fat (PBF) and visceral fat index (VFI) that acquired by BCM are superior to anthropometric measures is unknown. The study explored whether PBF and VFI are better than anthropometric indexes [body mass index (BMI), waist circumference (WC) and waist circumference to height ratio(WHtR)] in predicating metabolic risk factor clustering in a representive sample across China which included 9574 Chinese men and women that were investigated in 2009-2010...
June 2017: Preventive Medicine Reports
https://www.readbyqxmd.com/read/28315174/microglia-activation-contributes-to-quinolinic-acid-induced-neuronal-excitotoxicity-through-tnf-%C3%AE
#10
Wei Feng, Yan Wang, Zi-Qi Liu, Xuan Zhang, Rong Han, You-Zhu Miao, Zheng-Hong Qin
It has been reported that activation of NF-κB is involved in excitotoxicity; however, it is not fully understood how NF-κB contributes to excitotoxicity. The aim of this study is to investigate if NF-κB contributes to quinolinic acid (QA)-mediated excitotoxicity through activation of microglia. In the cultured primary cortical neurons and microglia BV-2 cells, the effects of QA on cell survival, NF-κB expression and cytokines production were investigated. The effects of BV-2-conditioned medium (BCM) on primary cortical neurons were examined...
March 17, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28236778/interactions-between-synaptic-homeostatic-mechanisms-an-attempt-to-reconcile-bcm-theory-synaptic-scaling-and-changing-excitation-inhibition-balance
#11
REVIEW
Tara Keck, Mark Hübener, Tobias Bonhoeffer
Homeostatic plasticity is proposed to be mediated by synaptic changes, such as synaptic scaling and shifts in the excitation/inhibition balance. These mechanisms are thought to be separate from the Bienenstock, Cooper, Munro (BCM) learning rule, where the threshold for the induction of long-term potentiation and long-term depression slides in response to changes in activity levels. Yet, both sets of mechanisms produce a homeostatic response of a relative increase (or decrease) in strength of excitatory synapses in response to overall activity-level changes...
February 22, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/28230606/secretions-of-bifidobacterium-infantis-and-lactobacillus-acidophilus-protect-intestinal-epithelial-barrier-function
#12
Shuangshuang Guo, Tyler Gillingham, Yuming Guo, Di Meng, Weishu Zhu, W Allen Walker, Kriston Ganguli
OBJECTIVES: The secreted metabolites of probiotics are cytoprotective to intestinal epithelium and have been shown to attenuate inflammation and reduce gut permeability. The present study was designed to determine the protective effects of probiotic conditioned media (PCM) from Bifidobacterium infantis (BCM) and Lactobacillus acidophilus (LCM) on interleukin (IL)-1β-induced intestinal barrier compromise. METHODS: The epithelial barrier was determined by measuring the transepithelial electrical resistance (TER) across a Caco-2 cell monolayer using a Transwell model...
March 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28220467/emergent-dynamical-properties-of-the-bcm-learning-rule
#13
Lawrence C Udeigwe, Paul W Munro, G Bard Ermentrout
The Bienenstock-Cooper-Munro (BCM) learning rule provides a simple setup for synaptic modification that combines a Hebbian product rule with a homeostatic mechanism that keeps the weights bounded. The homeostatic part of the learning rule depends on the time average of the post-synaptic activity and provides a sliding threshold that distinguishes between increasing or decreasing weights. There are, thus, two essential time scales in the BCM rule: a homeostatic time scale, and a synaptic modification time scale...
December 2017: Journal of Mathematical Neuroscience
https://www.readbyqxmd.com/read/28143874/body-composition-as-a-predictor-of-toxicity-in-patients-receiving-anthracycline-and-taxane-based-chemotherapy-for-early-stage-breast-cancer
#14
Shlomit Strulov Shachar, Allison M Deal, Marc Weinberg, Grant R Williams, Kirsten A Nyrop, Karteek Popuri, Seul Ki Choi, Hyman Muss
PURPOSE: Poor body composition metrics (BCM) are associated with inferior cancer outcomes; however, in early breast cancer (EBC) there is a paucity of evidence regarding BCM's impact on toxicities. This study investigates associations between BCM and treatment-related toxicity in EBC patients receiving anthracyclines-taxane based chemotherapy. EXPERIMENTAL DESIGN: Pretreatment computerized tomography (CT) images were evaluated for skeletal muscle area (SMA), density (SMD), and fat tissue at the 3rd lumbar vertebrae...
January 31, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28118756/contribution-of-volume-overload-to-the-arterial-stiffness-of-hemodialysis-patients
#15
Łukasz Czyżewski, Janusz Wyzgał, Emilia Czyżewska, Janusz Sierdziński, Łukasz Szarpak
Arterial stiffness is evaluated with the measurement of pulse wave velocity (PWV), while overhydration (OH) and nutritional status are evaluated with bioimpedance spectroscopy (BIS). In this study, we investigated the effect of a single dialysis session on arterial stiffness, hydration status, and laboratory parameters. The observational, cross-sectional, cohort study included 71 HD patients with mean age 64 ± 16 yrs. A Complior device was used to perform PWV measurements. The patients were examined immediately before and 15 min after a mid-week hemodialysis session...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/28112199/genome-wide-association-analysis-of-chronic-lymphocytic-leukaemia-hodgkin-lymphoma-and-multiple-myeloma-identifies-pleiotropic-risk-loci
#16
Philip J Law, Amit Sud, Jonathan S Mitchell, Marc Henrion, Giulia Orlando, Oleg Lenive, Peter Broderick, Helen E Speedy, David C Johnson, Martin Kaiser, Niels Weinhold, Rosie Cooke, Nicola J Sunter, Graham H Jackson, Geoffrey Summerfield, Robert J Harris, Andrew R Pettitt, David J Allsup, Jonathan Carmichael, James R Bailey, Guy Pratt, Thahira Rahman, Chris Pepper, Chris Fegan, Elke Pogge von Strandmann, Andreas Engert, Asta Försti, Bowang Chen, Miguel Inacio da Silva Filho, Hauke Thomsen, Per Hoffmann, Markus M Noethen, Lewin Eisele, Karl-Heinz Jöckel, James M Allan, Anthony J Swerdlow, Hartmut Goldschmidt, Daniel Catovsky, Gareth J Morgan, Kari Hemminki, Richard S Houlston
B-cell malignancies (BCM) originate from the same cell of origin, but at different maturation stages and have distinct clinical phenotypes. Although genetic risk variants for individual BCMs have been identified, an agnostic, genome-wide search for shared genetic susceptibility has not been performed. We explored genome-wide association studies of chronic lymphocytic leukaemia (CLL, N = 1,842), Hodgkin lymphoma (HL, N = 1,465) and multiple myeloma (MM, N = 3,790). We identified a novel pleiotropic risk locus at 3q22...
January 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28074874/modeling-confirmation-bias-and-polarization
#17
Michela Del Vicario, Antonio Scala, Guido Caldarelli, H Eugene Stanley, Walter Quattrociocchi
Online users tend to select claims that adhere to their system of beliefs and to ignore dissenting information. Confirmation bias, indeed, plays a pivotal role in viral phenomena. Furthermore, the wide availability of content on the web fosters the aggregation of likeminded people where debates tend to enforce group polarization. Such a configuration might alter the public debate and thus the formation of the public opinion. In this paper we provide a mathematical model to study online social debates and the related polarization dynamics...
January 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28040796/role-of-rpl39-in-metaplastic-breast-cancer
#18
Bhuvanesh Dave, Daniel D Gonzalez, Zhi-Bin Liu, Xiaoxian Li, Helen Wong, Sergio Granados, Nadeer E Ezzedine, Douglas H Sieglaff, Joe E Ensor, Kathy D Miller, Milan Radovich, Agda KarinaEtrovic, Steven S Gross, Olivier Elemento, Gordon B Mills, Michael Z Gilcrease, Jenny C Chang
BACKGROUND: Metaplastic breast cancer is one of the most therapeutically challenging forms of breast cancer because of its highly heterogeneous and chemoresistant nature. We have previously demonstrated that ribosomal protein L39 (RPL39) and its gain-of-function mutation A14V have oncogenic activity in triple-negative breast cancer and this activity may be mediated through inducible nitric oxide synthase (iNOS). The function of RPL39 and A14V in other breast cancer subtypes is currently unknown...
June 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/28033185/use-of-the-body-composition-monitor-for-fluid-status-measurements-in-elderly-malnourished-subjects
#19
David F Keane, Kim Bowra, Kathryn Kearney, Elizabeth Lindley
Most haemodialysis (HD) patients are able to finish dialysis at or below the normally hydrated weight determined using the body composition monitor (BCM). However, a minority become symptomatic when they are still fluid overloaded based on BCM-measured overhydration (OH). Malnourished patients frequently fall into this group, suggesting that they may have OH that is inaccessible to ultrafiltration. To isolate any effect of malnutrition on BCM-measured OH from those relating to renal failure, OH measurements for twenty elderly subjects with normal renal function who were classified as malnourished were compared with an age-matched cohort with no known nutritional issues...
December 26, 2016: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28002640/activation-of-galanin-and-cholecystokinin-receptors-in-the-lumbosacral-spinal-cord-is-required-for-ejaculation-in-male-rats
#20
Natalie Kozyrev, Lique M Coolen
The spinal ejaculation generator is comprised of lumbar spinothalamic (LSt) cells and their axonal projections to autonomic and motor neurons in the lumbosacral spinal cord. LSt cells regulate ejaculatory reflexes by release of neuropeptides that are co-expressed in their axons, as previously demonstrated for gastrin-releasing peptide and enkephalin. Here, the role of two other neuropeptides co-expressed in LSt cells for ejaculatory reflexes is demonstrated: galanin and cholecystokinin (CCK). Adult male rats were anesthetized, spinalized, and received intrathecal infusions of galanin receptor antagonist Galantide (1 or 10 nmol) or CCK receptor antagonist proglumide (71 or 714 nmol)...
December 21, 2016: European Journal of Neuroscience
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