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https://www.readbyqxmd.com/read/29161592/tumor-suppressor-inactivation-of-gdf11-occurs-by-precursor-sequestration-in-triple-negative-breast-cancer
#1
Sameer S Bajikar, Chun-Chao Wang, Michael A Borten, Elizabeth J Pereira, Kristen A Atkins, Kevin A Janes
Triple-negative breast cancer (TNBC) is an aggressive and heterogeneous carcinoma in which various tumor-suppressor genes are lost by mutation, deletion, or silencing. Here we report a tumor-suppressive mode of action for growth-differentiation factor 11 (GDF11) and an unusual mechanism of its inactivation in TNBC. GDF11 promotes an epithelial, anti-invasive phenotype in 3D triple-negative cultures and intraductal xenografts by sustaining expression of E-cadherin and inhibitor of differentiation 2 (ID2). Surprisingly, clinical TNBCs retain the GDF11 locus and expression of the protein itself...
November 20, 2017: Developmental Cell
https://www.readbyqxmd.com/read/29161569/denitrification-of-landfill-leachate-under-different-hydraulic-retention-time-in-a-two-stage-anoxic-oxic-combined-membrane-bioreactor-process-performances-and-bacterial-community
#2
Jianbo Liu, Panyue Zhang, Haibo Li, Yuan Tian, Siyu Wang, Yonghui Song, Guangming Zeng, Chen Sun, Zhiyong Tian
Two-stage anoxic/oxic combined membrane bioreactor (A/O-A/O-MBR) process was used to treat leachate generated from Shenyang Laohuchong landfill, and the effect of hydraulic retention time (HRT) was studied. A long HRT of 9 d and a short HRT of 5 d showed negative effect on the stability of process, resulting in a higher organic concentration of effluent than that with a HRT of 7 d, while the highest removal of chemical oxygen demand (COD), ammonia (NH4(+)-N) and total nitrogen (TN) were achieved with a HRT of 7 d, which was 82...
November 11, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29161346/co-transplantation-of-nanofat-enhances-neovascularization-and-fat-graft-survival-in-nude-mice
#3
Qian Yu, Yizuo Cai, He Huang, Zhenxing Wang, Peng Xu, Xiangsheng Wang, Lu Zhang, Wenjie Zhang, Wei Li
Background: Autologous fat grafting is commonly used for soft-tissue augmentation and reconstruction. However, this technique is limited by a high rate of graft absorption. Thus, approaches to improve fat graft survival that promote neovascularization are of great interest. Nanofat has several beneficial features that may render it more suitable for clinical applications than other stem-cell based approaches. Objectives: We aimed to determine whether nanofat could enhance new vessel formation and improve the long-term retention of fat grafts...
November 17, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29161256/hiv-pre-exposure-prophylaxis-and-early-antiretroviral-treatment-among-female-sex-workers-in-south-africa-results-from-a-prospective-observational-demonstration-project
#4
Robyn Eakle, Gabriela B Gomez, Niven Naicker, Rutendo Bothma, Judie Mbogua, Maria A Cabrera Escobar, Elaine Saayman, Michelle Moorhouse, W D Francois Venter, Helen Rees
BACKGROUND: Operational research is required to design delivery of pre-exposure prophylaxis (PrEP) and early antiretroviral treatment (ART). This paper presents the primary analysis of programmatic data, as well as demographic, behavioural, and clinical data, from the TAPS Demonstration Project, which offered both interventions to female sex workers (FSWs) at 2 urban clinic sites in South Africa. METHODS AND FINDINGS: The TAPS study was conducted between 30 March 2015 and 30 June 2017, with the enrolment period ending on 31 July 2016...
November 2017: PLoS Medicine
https://www.readbyqxmd.com/read/29161227/motor-skill-learning-and-the-development-of-visual-perception-processes-supporting-action-identification
#5
Inchon Park, John J Buchanan
This study examined physical training and observational training influences on motor learning and the development of visual discrimination processes. Participants were trained on a bimanual task (relative phase of +90°) defined by a visual training stimulus. There were 2 observational contexts: 1) model-only, watch a learning model, and 2) stimulus-only, watch the visual training stimulus. After 2 d of training, the learning models performed the +90° pattern with reduced error in 2 retention tests. Each observer group showed improvement in performance of the +90° pattern, with the stimulus-only group characterized by a more significant improvement...
November 21, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/29161040/does-the-cl-ch4-%C3%A2-h-ch3cl-reaction-proceed-via-walden-inversion
#6
Laszlo Krotos, Gabor Czako
We report a chemically accurate global ab initio full-dimensional potential energy surface (PES) for the Cl(2P3/2) + CH4 reaction improving the high-energy region of our previous PES [Czakó, G.; Bowman, J. M. Science 2011, 334, 343-346]. Besides the abstraction (HCl + CH3) and the Walden-inversion substitution (H + CH3Cl) channels, the new PES accurately describes novel substitution pathways via retention of configuration. Quasiclassical trajectory simulation on this PES reveals that the substitution channel opens around 40 kcal/mol collision energy via Walden inversion and the retention cross sections raise from ∼50 kcal/mol...
November 21, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29161008/mapping-the-functional-tortuosity-and-spatio-temporal-heterogeneity-of-porous-polymer-membranes-with-super-resolution-nanoparticle-tracking
#7
Yu Cai, Daniel K Schwartz
As particles flow through porous media, they follow complex pathways and experience heterogeneous environments that are challenging to characterize. Tortuosity is often used as a parameter to characterize the complexity of pathways in porous materials and is useful in understanding hindered mass transport in industrial filtration and mass separation processes. However, conventional calculations of tortuosity provide only average values under static conditions; they are insensitive to the intrinsic heterogeneity of porous media and do not account for potential effects of operating conditions...
November 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29160915/spray-drying-of-spinach-juice-characterization-chemical-composition-and-storage
#8
Gülşah Çalışkan Koç, Safiye Nur Dirim
The 1st aim of this study is to determine the influence of inlet and outlet air temperatures on the physical and chemical properties of obtained powders from spinach juice (SJ) with 3.2 ± 0.2 °Brix (°Bx). Second, the effect of 3 different drying agents (maltodextrin, whey powder, and gum Arabic) on the same properties was investigated for the selected inlet/outlet temperatures (160/100 °C) which gives the minimum moisture content and water activity values. For this purpose, the total soluble solid content of SJ was adjusted to 5...
November 21, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/29160826/the-communication-awareness-relationships-and-empowerment-c-a-r-e-model-an-effective-tool-for-engaging-urban-communities-in-community-based-participatory-research
#9
Joniqua Ceasar, Marlene H Peters-Lawrence, Valerie Mitchell, Tiffany M Powell-Wiley
Little is known about recruitment methods for racial/ethnic minority populations from resource-limited areas for community-based health and needs assessments, particularly assessments that incorporate mobile health (mHealth) technology for characterizing physical activity and dietary intake. We examined whether the Communication, Awareness, Relationships and Empowerment (C.A.R.E.) model could reduce challenges recruiting and retaining participants from faith-based organizations in predominantly African American Washington, D...
November 21, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29160818/effect-of-different-skin-penetration-promoters-in-halobetasol-propionate-permeation-and-retention-in-human-skin
#10
Paulina Carvajal-Vidal, Mireia Mallandrich, María Luisa García, Ana Cristina Calpena
Halobetasol propionate (HB) is a potent synthetic corticosteroid used against inflammatory skin diseases, such as dermatitis, eczema, and psoriasis, among others. The aim of this study is to define how the presence of different skin penetration enhancers (nonane, menthone, limonene, azone, carene, decanol, linoleic acid and cetiol) affects the penetration and retention in skin of HB. To determine drug penetration through skin, 5% of each promoter was used in an ex vivo system with human skin on Franz cells...
November 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29160571/sacral-neuromodulation-and-pregnancy-results-of-a-national-survey-carried-out-for-the-neuro-urology-committee-of-the-french-association-of-urology-afu
#11
Pauline Roulette, Evelyne Castel-Lacanal, Sylvain Sanson, Romain Caremel, Véronique Phé, Stéphane Bart, Franck Duchêne, Marianne De Sèze, Alexia Even, Andréa Manunta, Maria C Scheiber-Nogueira, Pascal Mouracade, Catherine-Marie Loche, Emmanuel Chartier-Kastler, Alain Ruffion, Gilles Karsenty, Xavier Gamé
AIMS: To assess the impact of sacral neuromodulation (SNM) on pregnancy and vice-versa, by identifying women who had received SNM for lower-urinary tract symptoms (LUTS) and had become pregnant. METHODS: A cross-sectional descriptive study was carried out based on responses to an on-line questionnaire sent to practitioners listed on the InterStim enCaptureTM National Registry. Questions were related to pre-pregnancy health and SNM efficacy, deactivation of the device, its impact on LUTS, childbirth, the infant, its reactivation and postpartum effectiveness...
November 21, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/29160092/prevention-of-urethral-retraction-with-stay-sutures-purs-during-robot-assisted-radical-prostatectomy-improves-early-urinary-control-a-prospective-cohort-study
#12
Omer Burak Argun, Mustafa Bilal Tuna, Tünkut Doğanca, Can Obek, Panagiotis Mourmouris, Ilter Tufek, Sarper Erdogan, Bulent Cetinel, Ali Riza Kural
OBJECTIVE: To evaluate early continence rates with a novel modified vesico-urethral anastomosis technique based on prevention of urethral retraction using anastomosis sutures as stay sutures (PURS) during robot-assisted radical prostatectomy. MATERIAL AND METHOD: The modified anastomosis technique was used in 60 patients and data collected prospectively. This cohort was compared with another consecutive 60 patients operated with standard anastomosis technique. This new technique is based on preventing urethral retraction of the posterior urethra with 2 anastomosis sutures being used as stay sutures...
November 21, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/29160029/dose-dependencies-and-biocompatibility-of-renal-clearable-gold-nanoparticles
#13
Jie Zheng, Jing Xu, Mengxiao Yu, Chuanqi Peng, Phoebe Carter, Jia Tian, Xuhui Ning, Qinhan Zhou, Qiu Tu, Greg Zhang, Anthony Dao, Xingya Jiang, Payal Kapur, Jer-Tsong Hsieh, Xudong Zhao, Pengyu Liu
While dose dependencies in pharmacokinetics and clearance are often observed in clinically used small molecules, very few studies have been dedicated to the understandings of potential dose-dependent in vivo transport of nanomedicines. Here we report that the pharmacokinetics and clearance of renal clearable gold nanoparticles (GS-AuNPs) are strongly dose-dependent once injection doses are above 15 mg/kg: high dose expedited the renal excretion and shortened the blood retention. As a result, the no-observed-adverse-effect-level (NOAEL) of GS-AuNPs was >1000 mg/kg in CD-1 mice...
November 20, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/29159861/promoting-high-standards-of-care-for-women-living-with-hiv-position-statement-from-the-women-against-viruses-in-europe-working-group
#14
J D Kowalska, K Aebi-Popp, M Loutfy, F A Post, M J Perez-Elias, M Johnson, F Mulcahy
OBJECTIVES: Gender-related factors can influence management decisions, treatment outcomes and the overall long-term wellbeing of people living with HIV (PLWH). The Women Against Viruses in Europe (WAVE) Working Group was established to promote the health and wellbeing of women living with HIV (WLWH). WAVE is part of the European AIDS Clinical Society (EACS) and organizes annual workshops to discuss different issues in the management of WLWH. METHODS: In 2016, 34 WAVE members including community representatives, HIV clinicians and researchers met to discuss standards of care for WLWH and to review current guidelines...
November 21, 2017: HIV Medicine
https://www.readbyqxmd.com/read/29159599/delayed-gastric-emptying-following-laparoscopic-repair-of-very-large-hiatus-hernias-impairs-quality-of-life
#15
David S Liu, Chek Tog, Hou K Lim, Peter Stiven, Sarah K Thompson, David I Watson, Ahmad Aly
BACKGROUND: Delayed gastric emptying (DGE) following hiatus hernia surgery may affect a substantial number of patients with adverse clinical consequences. Here, we aim to evaluate the impact of DGE following laparoscopic repair of very large hiatus hernias on patients' quality of life, gastrointestinal symptomatology, and daily function. METHODS: Analysis of data collected from a multicenter prospective randomised trial of patients who underwent laparoscopic mesh versus sutured repair of very large hiatus hernias (>50% of stomach in chest)...
November 20, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/29159344/regioselective-and-enantiospecific-synthesis-of-the-hsp-co-inducer-arimoclomol-from-chiral-glycidyl-derivatives
#16
Benjamin N Atkinson, Hannah L Woodward, James Sipthorp, Paul V Fish
A new efficient chiral synthesis of enantiopure arimoclomol (2) is reported from (R)-(-)-glycidyl nosylate (11) with complete retention of chiral integrity. Off-target pharmacology of arimoclomol (2) was evaluated against a representative set of drug targets and showed modest binding to a few kinases. Pharmacokinetic data was generated in vivo in mouse and showed a low brain : plasma ratio. These studies will be helpful towards a better understanding of the PK-PD relationship of 2 in disease models.
November 21, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/29159139/task-shifting-point-of-care-cd4-testing-to-lay-health-workers-in-hiv-care-and-treatment-services-in-namibia
#17
Francina Kaindjee-Tjituka, Souleymane Sawadogo, Graham Mutandi, Andrew D Maher, Natanael Salomo, Claudia Mbapaha, Marytha Neo, Anita Beukes, Justice Gweshe, Alexinah Muadinohamba, David W Lowrance
Introduction: Access to CD4+ testing remains a common barrier to early initiation of antiretroviral therapy among persons living with HIV/AIDS in low- and middle-income countries. The feasibility of task-shifting of point-of-care (POC) CD4+ testing to lay health workers in Namibia has not been evaluated. Methods: From July to August 2011, Pima CD4+ analysers were used to improve access to CD4+ testing at 10 selected public health facilities in Namibia. POC Pima CD4+ testing was performed by nurses or lay health workers...
2017: African Journal of Laboratory Medicine
https://www.readbyqxmd.com/read/29159058/local-and-distant-relationships-between-amyloid-tau-and-neurodegeneration-in-alzheimer-s-disease
#18
Leonardo Iaccarino, Gautam Tammewar, Nagehan Ayakta, Suzanne L Baker, Alexandre Bejanin, Adam L Boxer, Maria Luisa Gorno-Tempini, Mustafa Janabi, Joel H Kramer, Andreas Lazaris, Samuel N Lockhart, Bruce L Miller, Zachary A Miller, James P O'Neil, Rik Ossenkoppele, Howard J Rosen, Daniel R Schonhaut, William J Jagust, Gil D Rabinovici
The relationships between β-amyloid (Aβ), tau and neurodegeneration within Alzheimer's Disease pathogenesis are not fully understood. To explore these associations in vivo, we evaluated 30 Aβ PET-positive patients (mean ± sd age 62.4 ± 8.3) with mild probable AD and 12 Aβ PET-negative healthy controls (HC) (mean ± sd age 77.3 ± 6.9) as comparison. All participants underwent 3 T MRI, (11)C-PiB (Aβ) PET and (18)F-AV1451 (tau) PET. Multimodal correlation analyses were run at both voxel- and region-of-interest levels...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29159006/the-sound-games-introducing-gamification-into-stanford-s-orientation-on-emergency-ultrasound
#19
Viveta Lobo, Andrew Q Stromberg, Peter Rosston
Point-of-care ultrasound is a critical component of graduate medical training in emergency medicine. Innovation in ultrasound teaching methods is greatly needed to keep up with a changing medical landscape. A field-wide trend promoting simulation and technology-enhanced learning is underway in an effort to improve patient care, as well as patient safety. In an effort to both motivate students and increase their skill retention, training methods are shifting towards a friendly competition model and are gaining popularity nationwide...
September 18, 2017: Curēus
https://www.readbyqxmd.com/read/29158953/retention-of-movement-technique-implications-for-primary-prevention-of-acl-injuries
#20
Wouter Welling, Anne Benjaminse, Alli Gokeler, Bert Otten
Background: Retention of movement technique is crucial in anterior cruciate ligament (ACL) injury prevention programs. It is unknown if specific instructions or video instructions result in changes in kinematic and kinetic measures during a relatively short training session, and in a retention test one week later. Hypothesis/Purpose: The purpose was to determine the effects of verbal external focus (EF), verbal internal focus (IF) and video instructions (VI) on landing technique (i...
November 2017: International Journal of Sports Physical Therapy
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