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https://www.readbyqxmd.com/read/29166598/biological-significance-of-the-suppression-of-oxidative-phosphorylation-in-induced-pluripotent-stem-cells
#1
Cheng Zhang, Maria Skamagki, Zhong Liu, Aparna Ananthanarayanan, Rui Zhao, Hu Li, Kitai Kim
We discovered that induced pluripotent stem cell (iPSC) clones generated from aged tissue donors (A-iPSCs) fail to suppress oxidative phosphorylation. Compared to embryonic stem cells (ESCs) and iPSCs generated from young donors (Y-iPSCs), A-iPSCs show poor expression of the pluripotent stem cell-specific glucose transporter 3 (GLUT3) and impaired glucose uptake, making them unable to support the high glucose demands of glycolysis. Persistent oxidative phosphorylation in A-iPSCs generates higher levels of reactive oxygen species (ROS), which leads to excessive elevation of glutathione (a ROS-scavenging metabolite) and a blunted DNA damage response...
November 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/29165774/hypospadias-in-male-infants-a-review
#2
X-Y Zhu, D-C Feng, T Han
The external genitalia problems are cumbersome problems for both doctors and parents, as these abnormalities have a consequent impact on future generations. However, the affected young infants are unaware of the consequences due to immature emotional state. Further, the feeling of being different and inferior in affected young patients could give rise to negative emotions including depression, insecurity, anxiety, powerlessness, etc. These all factors collectively could cause a mental imbalance in the affected children...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29165687/investigation-of-the-relationship-between-radiation-dose-and-gene-mutations-and-fusions-in-post-chernobyl-thyroid-cancer
#3
Alexey A Efanov, Alina V Brenner, Tetiana I Bogdanova, Lindsey M Kelly, Pengyuan Liu, Mark P Little, Abigail I Wald, Maureen Hatch, Liudmyla Y Zurnadzy, Marina N Nikiforova, Vladimir Drozdovitch, Kiyohiko Mabuchi, Mykola D Tronko, Stephen J Chanock, Yuri E Nikiforov
Background: Exposure to ionizing radiation during childhood is a well-established risk factor for thyroid cancer. However, the genetic mechanisms of radiation-associated carcinogenesis remain not fully understood. Methods: In this study, we used targeted next-generation sequencing and RNA-Seq to study 65 papillary thyroid cancers (PTCs) from patients in the Ukrainian-American cohort with measurement-based iodine-131 (I-131) thyroid doses received as a result of the Chernobyl accident...
November 18, 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29164576/potentiation-of-treatment-efficacy-against-colon-cancer-of-dopamine-via-elevating-klf2-expression-in-tumor-vascular-endothelial-cells
#4
S Chen, Y-M Zhang, Y-G Zhang, J Jia, R-W Zhu
OBJECTIVE: To investigate the anti-tumor effect and potential mechanism of dopamine combined with 5-FU in colon cancer. MATERIALS AND METHODS: Babl/c F1 generation male mice (N = 60) were inoculated with mouse C26 colon cancer cells below the pit to construct colon cancer model. Tumor-bearing mice were then divided into 4 groups (N = 8 each): model control group, dopamine group, 5-FU group and dopamine combined with 5-FU group. Dopamine (100 mg/kg/d) was intraperitoneally injected into mice...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29164217/enhanced-energy-transfer-in-heterogeneous-nanocrystals-for-near-infrared-upconversion-photocurrent-generation
#5
L Wang, L Ren, D Mitchell, G Casillas-Garcia, W Ren, C Ma, X X Xu, S Wen, F Wang, J Zhou, X Xu, W Hao, S X Dou, Y Du
The key to produce inorganic heterogeneous nanostructures, and to integrate multiple functionalities, is to enhance or at least retain the functionalities of different components of materials. However, this ideal scenario is often deteriorated at the interface of the heterogeneous nanostructures due to lattice mismatches, resulting in downgraded performance in most hybrid nanomaterials. Here, we report that there is a narrow window in controlling temperature in a Lewis acid-base reaction process to facilitate epitaxial alignment during the synthesis of hybrid nanomaterials...
November 22, 2017: Nanoscale
https://www.readbyqxmd.com/read/29164060/tissue-factor-expressing-tumor-derived-extracellular-vesicles-activate-quiescent-endothelial-cells-via-protease-activated-receptor-1
#6
Sara P Y Che, Jeannie Y Park, Tracy Stokol
Tissue factor (TF)-expressing tumor-derived extracellular vesicles (EVs) can promote metastasis and pre-metastatic niche formation, but the mechanisms by which this occurs remain largely unknown. We hypothesized that generation of activated factor X (FXa) by TF expressed on tumor-derived EV could activate protease-activated receptors (PARs) on non-activated endothelial cells to induce a pro-adhesive and pro-inflammatory phenotype. We obtained EV from TF-expressing breast (MDA-MB-231) and pancreatic (BxPC3 and Capan-1) tumor cell lines...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/29163793/rapid-ultra-low-coverage-copy-number-profiling-of-cell-free-dna-as-a-precision-oncology-screening-strategy
#7
Daniel H Hovelson, Chia-Jen Liu, Yugang Wang, Qing Kang, James Henderson, Amy Gursky, Scott Brockman, Nithya Ramnath, John C Krauss, Moshe Talpaz, Malathi Kandarpa, Rashmi Chugh, Missy Tuck, Kirk Herman, Catherine S Grasso, Michael J Quist, Felix Y Feng, Christine Haakenson, John Langmore, Emmanuel Kamberov, Tim Tesmer, Hatim Husain, Robert J Lonigro, Dan Robinson, David C Smith, Ajjai S Alva, Maha H Hussain, Arul M Chinnaiyan, Muneesh Tewari, Ryan E Mills, Todd M Morgan, Scott A Tomlins
Current cell-free DNA (cfDNA) next generation sequencing (NGS) precision oncology workflows are typically limited to targeted and/or disease-specific applications. In advanced cancer, disease burden and cfDNA tumor content are often elevated, yielding unique precision oncology opportunities. We sought to demonstrate the utility of a pan-cancer, rapid, inexpensive, whole genome NGS of cfDNA approach (PRINCe) as a precision oncology screening strategy via ultra-low coverage (~0.01x) tumor content determination through genome-wide copy number alteration (CNA) profiling...
October 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/29163756/effect-of-chronic-administration-of-resveratrol-on-cognitive-performance-during-aging-process-in-rats
#8
A R Navarro-Cruz, R Ramírez Y Ayala, C Ochoa-Velasco, E Brambila, R Avila-Sosa, S Pérez-Fernández, J C Morales-Medina, P Aguilar-Alonso
The increase in the elderly population has generated concern to meet health demands. The research efforts to elucidate the mechanisms of damage associated with aging have also been significantly increased, especially in order to avoid the reduction of the cognitive abilities in geriatric patients, resulting from the damage generated mainly at the level of the hippocampus during old age. At present, many studies describe resveratrol as an antiaging component. There are reports that it can activate the Sirt1 gene related to antiaging, emulating the effects obtained by caloric restriction in rodents...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29163304/do-different-mental-models-influence-cybersecurity-behavior-evaluations-via-statistical-reasoning-performance
#9
Gary L Brase, Eugene Y Vasserman, William Hsu
Cybersecurity research often describes people as understanding internet security in terms of metaphorical mental models (e.g., disease risk, physical security risk, or criminal behavior risk). However, little research has directly evaluated if this is an accurate or productive framework. To assess this question, two experiments asked participants to respond to a statistical reasoning task framed in one of four different contexts (cybersecurity, plus the above alternative models). Each context was also presented using either percentages or natural frequencies, and these tasks were followed by a behavioral likelihood rating...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/29162191/childhood-adversity-moderates-the-influence-of-proximal-episodic-stress-on-the-cortisol-awakening-response-and-depressive-symptoms-in-adolescents
#10
Lisa R Starr, Kimberly Dienes, Catherine B Stroud, Zoey A Shaw, Y Irina Li, Fanny Mlawer, Meghan Huang
Childhood adversity (CA) is known to predict sensitization to proximal stressors. Researchers have suggested that disruptions in hypothalamus-pituitary-adrenal axis functioning may be a biological mechanism. If so, CA may predict altered associations between proximal life stress and markers of cortisol secretion. We examined whether CA moderates associations between recent episodic stress and (a) the cortisol awakening response (CAR), and (b) depressive symptoms, in 241 adolescents aged 14-17 years (cortisol n = 196)...
December 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/29161810/chemical-cosubstitution-oriented-design-of-rare-earth-borates-as-potential-ultraviolet-nonlinear-optical-materials
#11
Miriding Mutailipu, Zhiqing Xie, Xin Su, Min Zhang, Ying Wang, Zhihua Yang, Muhammad Ramzan Saeed Ashraf Janjua, Shilie Pan
Chemical cosubstitution strategy was implemented to design the potential ultraviolet (UV) and deep-UV nonlinear optical (NLO) materials. Taking the classic β-BaB2O4 as a maternal structure, by simultaneously replacing the Ba2+ and [B3O6]3- units for monovalant (K+), divalent (alkaline earth metal), trivalent (rare-earth metal, Bi3+) ions, and the [B5O10]5- clusters through two different practical routes, altogether twelve new mixed-metal noncentrosymmetric borates K7MIIRE2(B5O10)3 (MII = Ca, Sr, Ba, K/RE0...
November 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29161602/gravel-beaches-nourishment-modelling-the-equilibrium-beach-profile
#12
I López, L Aragonés, Y Villacampa, F J Navarro-González
The erosion of the world's coasts and the shortage of sand to mitigate beach erosion are leading to the increasingly common use of gravel for coastal protection and beach nourishment. Therefore, in order to determine the amount of gravel required for such actions, it is important to know perfectly the equilibrium profile of gravel beaches. However, at present, this profile is obtained from formulas obtained mainly after channel tests, and therefore most of them do not adapt to the real profiles formed by gravel beaches in nature...
November 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29158372/enhancing-next-generation-sequencing-guided-cancer-care-through-cognitive-computing
#13
Nirali M Patel, Vanessa V Michelini, Jeff M Snell, Saianand Balu, Alan P Hoyle, Joel S Parker, Michele C Hayward, David A Eberhard, Ashley H Salazar, Patrick McNeillie, Jia Xu, Claudia S Huettner, Takahiko Koyama, Filippo Utro, Kahn Rhrissorrakrai, Raquel Norel, Erhan Bilal, Ajay Royyuru, Laxmi Parida, H Shelton Earp, Juneko E Grilley-Olson, D Neil Hayes, Stephen J Harvey, Norman E Sharpless, William Y Kim
BACKGROUND: Using next-generation sequencing (NGS) to guide cancer therapy has created challenges in analyzing and reporting large volumes of genomic data to patients and caregivers. Specifically, providing current, accurate information on newly approved therapies and open clinical trials requires considerable manual curation performed mainly by human "molecular tumor boards" (MTBs). The purpose of this study was to determine the utility of cognitive computing as performed by Watson for Genomics (WfG) compared with a human MTB...
November 20, 2017: Oncologist
https://www.readbyqxmd.com/read/29156378/effect-of-robotic-assisted-gait-rehabilitation-on-dynamic-equilibrium-control-in-the-gait-of-children-with-cerebral-palsy
#14
L Wallard, G Dietrich, Y Kerlirzin, J Bredin
Due to the intensity and repetition of movement, roboticassisted gait training therapy could have a beneficial effect on the recovery and improvement of postural and locomotor functions of the patient. This study sought to highlight the effects of robotic-assisted gait rehabilitation in gait of children with Cerebral Palsy (CP). We analyzed the different strategies before and after this rehabilitation which was used in order to generate forward motion while maintaining balance. Data were collected by a motion analysis system (Vicon® - Oxford Metrics, Oxford, UK)...
November 11, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29155704/experimental-system-of-solar-adsorption-refrigeration-with-concentrated-collector
#15
Z X Yuan, Y X Li, C X Du
To improve the performance of solar adsorption refrigeration, an experimental system with a solar concentration collector was set up and investigated. The main components of the system were the adsorbent bed, the condenser, the evaporator, the cooling sub-system, and the solar collector. In the first step of the experiment, the vapor-saturated bed was heated by the solar radiation under closed conditions, which caused the bed temperature and pressure to increase. When the bed pressure became high enough, the bed was switched to connect to the condenser, thus water vapor flowed continually from the bed to the condenser to be liquefied...
October 18, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155329/cloning-and-characterization-of-two-novel-%C3%AE-glucosidase-genes-encoding-isoenzymes-of-the-cellobiase-complex-from-cellulomonas-biazotea
#16
Anthony K N Chan, Alan K L Ng, Kate K Y Ng, W K R Wong
Enzymatic degradation of cellulosic waste to generate renewable biofuels has offered an attractive solution to the energy problem. Synergistic hydrolysis of cellulose residues requires the participation of three different types of cellulases - endoglucanases, exoglucanases, and β-glucosidases (Bgl). Our group has been interested in using Bgl of Cellulomonas biazotea in studies designed to investigate cooperative action among different cellulases. We previously have cloned bgl genes encoding Cba and Cba3, which are C...
November 16, 2017: Gene
https://www.readbyqxmd.com/read/29154958/pathogenic-th17-inflammation-is-sustained-in-the-lungs-by-conventional-dendritic-cells-and-tlr4-signaling
#17
Karim H Shalaby, Miranda R Lyons-Cohen, Gregory S Whitehead, Seddon Y Thomas, Immo Prinz, Hideki Nakano, Donald N Cook
BACKGROUND: Mechanisms that elicit mucosal Th17 cell responses have been described, yet how these cells are sustained in chronically inflamed tissues remains unclear. OBJECTIVE: We sought to understand whether the maintenance of lung Th17 inflammation requires environmental agents in addition to antigen, and to identify the lung antigen-presenting cell types (APCs) that sustain the self-renewal of Th17 cells. METHODS: Animals were repeatedly exposed to aspiration of ovalbumin alone, or together with environmental adjuvants, including extracts of common house dust (HDE), to test their role in maintaining lung inflammation...
November 14, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29154412/the-impact-of-mating-systems-and-dispersal-on-fine-scale-genetic-structure-at-maternally-paternally-and-biparentally-inherited-markers
#18
Robyn E Shaw, Sam C Banks, Rod Peakall
For decades, studies have focused on how dispersal and mating systems influence genetic structure across populations or social-groups. However, we still lack a thorough understanding of how these processes and their interaction, shape spatial genetic patterns over a finer-scale (tens - hundreds of metres). Using uniparentally inherited markers may help answer these questions, yet their potential has not been fully explored. Here, we use individual-level simulations to investigate the effects of dispersal and mating system on fine-scale genetic structure at autosomal, mitochondrial and Y chromosome markers...
November 20, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/29151398/disaster-risk-reduction-in-myanmar-a-need-for-focus-on-community-preparedness-and-improved-evaluation-of-initiatives
#19
Andrew D Smith, Emily Y Y Chan
Myanmar is a country in political and economic transition. Facing a wide-variety of natural hazards and ongoing conflict, the country's under-developed infrastructure has resulted in high disaster risk. Following the devastation of Cyclone Nargis in 2008 and increased global focus on disaster management and risk reduction, Myanmar has begun development of national disaster policies. Myanmar's Action Plan for Disaster Risk Reduction addressed multiple stages of disaster development and has made progress towards national projects, however, has struggled to implement community-based preparedness and response initiatives...
November 20, 2017: Disaster Medicine and Public Health Preparedness
https://www.readbyqxmd.com/read/29151285/-afp-producing-gastric-cancer-and-hepatoid-gastric-cancer
#20
Y K Wang, X T Zhang
AFP-producing gastric cancer(AFPGC) and hepatoid adenocarcinoma of the stomach (HAS) are two special subtypes of gastric cancer. There are both correlation and difference between them. AFPGC is usually identified as primary gastric cancer with serum AFP level more than 20 ng/ml or showed AFP positive staining by immunohistochemistry. The diagnosis of HAS is mainly dependent on the pathological character of hepatocellular carcinoma-like differentiation of gastric cancer. The morbidity of AFPGC and HAS are rather low, especially the incidence of HAS is about 1%...
November 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
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