keyword
MENU ▼
Read by QxMD icon Read
search

Manipulations

keyword
https://www.readbyqxmd.com/read/28545226/emergence-of-cd26-cancer-stem-cells-with-metastatic-properties-in-colorectal-carcinogenesis
#1
Alvin Ho-Kwan Cheung, Deepak Narayanan Iyer, Colin Siu-Chi Lam, Lui Ng, Sunny K M Wong, Hung-Sing Lee, Timothy Wan, Johnny Man, Ariel K M Chow, Ronnie T Poon, Roberta Pang, Wai-Lun Law
Colorectal cancer results from genetic aberrations which accumulate over a long period of time, with malignant and metastatic properties acquired at a relatively late stage. A subpopulation of CD26+ colorectal cancer stem cells are known to be implicated in metastasis. We quantified CD26+ cancer cells in 11 primary tumor samples by flow cytometry, and showed that tumors having confirmed or suspected metastases harbored a relatively high CD26+ level in these samples. We hypothesized that this subpopulation of cancer stem cells arises in the late stage of carcinogenesis from the bulk of tumor daughter cells which are CD26-...
May 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28545187/enterolactone-suppresses-proliferation-migration-and-metastasis-of-mda-mb-231-breast-cancer-cells-through-inhibition-of-upa-induced-plasmin-activation-and-mmps-mediated-ecm-remodeling
#2
Aniket V Mali, Asavari A Joshi, Mahabaleshwar V Hegde, Shivajirao S Kadam
Background: To enhance their own survival, tumor cells can manipulate their microenvironment through remodeling of the extra cellular matrix (ECM). The urokinase-type plasminogen activator (uPA) system catalyzes plasmin production which further mediates activation of matrix metalloproteinases (MMPs) and plays an important role in breast cancer invasion and metastasis through ECM remodeling. This provides a potential target for therapeutic intervention of breast cancer treatment. Enterolactone (EL) is derived from dietary flax lignans in the human body and is known to have anti-breast cancer activity...
April 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28545061/microbiota-induced-peritrophic-matrix-regulates-midgut-homeostasis-and-prevents-systemic-infection-of-malaria-vector-mosquitoes
#3
Faye H Rodgers, Mathilde Gendrin, Claudia A S Wyer, George K Christophides
Manipulation of the mosquito gut microbiota can lay the foundations for novel methods for disease transmission control. Mosquito blood feeding triggers a significant, transient increase of the gut microbiota, but little is known about the mechanisms by which the mosquito controls this bacterial growth whilst limiting inflammation of the gut epithelium. Here, we investigate the gut epithelial response to the changing microbiota load upon blood feeding in the malaria vector Anopheles coluzzii. We show that the synthesis and integrity of the peritrophic matrix, which physically separates the gut epithelium from its luminal contents, is microbiota dependent...
May 17, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28545004/autophagy-as-an-emerging-arena-for-plant-pathogen-interactions
#4
REVIEW
Daniel Hofius, Liang Li, Anders Hafrén, Nuria S Coll
Autophagy is a highly conserved degradation and recycling process that controls cellular homeostasis, stress adaptation, and programmed cell death in eukaryotes. Emerging evidence indicates that autophagy is a key regulator of plant innate immunity and contributes with both pro-death and pro-survival functions to antimicrobial defences, depending on the pathogenic lifestyle. In turn, several pathogens have co-opted and evolved strategies to manipulate host autophagy pathways to the benefit of infection, while some eukaryotic microbes require their own autophagy machinery for successful pathogenesis...
May 22, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/28544942/behavioural-and-neural-evidence-for-the-impact-of-fluency-context-on-conscious-memory
#5
Carlos Alexandre Gomes, Axel Mecklinger, Hubert Zimmer
It has been recently suggested that fluency may impact recognition memory performance when the fluency context varies from trial-to-trial. Surprisingly, such an effect has proved difficult to detect in the masked priming paradigm, one of the most popular means to increase fluency-based memory judgements. We conducted a functional magnetic resonance imaging (fMRI) experiment in which participants encoded words at study and, at test, performed a recognition memory task within a masked priming procedure. In order to optimise the chances of finding priming effects on recognition memory performance, we used low-frequency words, which have been shown to increase hits relative to false alarms and enhance masked priming effects...
April 21, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28544860/behavioral-processes-in-long-lag-intervention-studies
#6
Dale T Miller, Jennifer E Dannals, Julian J Zlatev
We argue that psychologists who conduct experiments with long lags between the manipulation and the outcome measure should pay more attention to behavioral processes that intervene between the manipulation and the outcome measure. Neglect of such processes, we contend, stems from psychology's long tradition of short-lag lab experiments where there is little scope for intervening behavioral processes. Studying process in the lab invariably involves studying psychological processes, but in long-lag field experiments it is important to study causally relevant behavioral processes as well as psychological ones...
May 2017: Perspectives on Psychological Science: a Journal of the Association for Psychological Science
https://www.readbyqxmd.com/read/28544779/a-brief-review-of-extrusion-based-tissue-scaffold-bio-printing
#7
REVIEW
Liqun Ning, Xiongbiao Chen
Extrusion-based bio-printing has great potential as a technique for manipulating biomaterials and living cells to create three-dimensional (3D) scaffolds for damaged tissue repair and function restoration. Over the last two decades, advances in both engineering techniques and life sciences have evolved extrusion-based bio-printing from a simple technique to one able to create diverse tissue scaffolds from a wide range of biomaterials and cell types. However, the complexities associated with synthesis of materials for bio-printing and manipulation of multiple materials and cells in bio-printing pose many challenges for scaffold fabrication...
May 24, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28544643/adaptations-to-endurance-training-depend-on-exercise-induced-oxidative-stress-exploiting-redox-inter-individual-variability
#8
Nikos V Margaritelis, Anastasios A Theodorou, Vassilis Paschalis, Aristidis S Veskoukis, Konstantina Dipla, Andreas Zafeiridis, George Panayiotou, Ioannis S Vrabas, Antonios Kyparos, Michalis G Nikolaidis
AIM: The aim of the present study was to reveal the role of reactive oxygen and nitrogen species (RONS) in exercise adaptations under physiological in vivo conditions and without the interference from other exogenous redox agents (e.g., a pro-oxidant or antioxidant). METHODS: We invented a novel methodological set-up that exploited the large redox inter-individual variability in exercise responses. More specifically, we used exercise-induced oxidative stress as the "classifier" measure (i...
May 24, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28544545/cytoprotective-encapsulation-of-individual-jurkat-t-cells-within-durable-tio2-shells-for-t-cell-therapy
#9
Wongu Youn, Eun Hyea Ko, Mi-Hee Kim, Matthew Park, Daewha Hong, Gulaim A Seisenbaeva, Vadim G Kessler, Insung S Choi
Lymphocytes, such as T cells and natural killer (NK) cells, have therapeutic promises in adoptive cell transfer (ACT) therapy, where the cells are activated and expanded in vitro, and then infused into a patient. However, the in vitro preservation of labile lymphocytes during transfer, manipulation, and storage has been one of the bottlenecks in the development and commercialization of therapeutic lymphocytes. Herein, we suggest a "cell-in-shell" (a.k.a. artificial spore) strategy to enhance the cell viability in the practical settings, while maintaining biological activities for therapeutic efficacy...
May 25, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28544479/drinking-problems-mechanisms-of-macropinosome-formation-and-maturation
#10
REVIEW
Catherine M Buckley, Jason S King
Macropinocytosis is a mechanism for the non-specific bulk uptake and internalisation of extracellular fluid. This plays specific and distinct roles in diverse cell types such as macrophages, dendritic cells and neurons, by allowing cells to sample their environment, extract extracellular nutrients and regulate plasma membrane turnover. Macropinocytosis has recently been implicated in several diseases including cancer, neurodegenerative diseases and atherosclerosis. Uptake by macropinocytosis is also exploited by several intracellular pathogens to gain entry into host cells...
May 24, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28544452/a-conserved-role-for-vegf-signaling-in-specification-of-homologous-mesenchymal-cell-types-positioned-at-spatially-distinct-developmental-addresses-in-early-development-of-sea-urchins
#11
Eric M Erkenbrack, Elizabeth Petsios
Comparative studies of early development in echinoderms are revealing the tempo and mode of alterations to developmental gene regulatory networks and to the cell types they specify. In euechinoid sea urchins, skeletogenic mesenchyme (SM) ingresses prior to gastrulation at the vegetal pole and aligns into a ring-like array with two bilateral pockets of cells, the sites where spiculogenesis will later occur. In cidaroid sea urchins, the anciently diverged sister clade to euechinoid sea urchins, a homologous SM cell type ingresses later in development, after gastrulation has commenced, and consequently at a distinct developmental address...
May 23, 2017: Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution
https://www.readbyqxmd.com/read/28544439/effects-of-cognitive-impairment-on-prosodic-parameters-of-speech-production-planning-in-multiple-sclerosis
#12
Céline De Looze, Noémie Moreau, Laurent Renié, Finnian Kelly, Alain Ghio, Audrey Rico, Bertrand Audoin, François Viallet, Jean Pelletier, Caterina Petrone
Cognitive impairment (CI) affects 40-65% of patients with multiple sclerosis (MS). CI can have a negative impact on a patient's everyday activities, such as engaging in conversations. Speech production planning ability is crucial for successful verbal interactions and thus for preserving social and occupational skills. This study investigates the effect of cognitive-linguistic demand and CI on speech production planning in MS, as reflected in speech prosody. A secondary aim is to explore the clinical potential of prosodic features for the prediction of an individual's cognitive status in MS...
May 24, 2017: Journal of Neuropsychology
https://www.readbyqxmd.com/read/28544154/floral-nectar-of-the-obligate-outcrossing-canavalia-gladiata-jacq-dc-fabaceae-contains-only-one-predominant-protein-a-class-iii-acidic-chitinase
#13
Xue-Long Ma, Richard I Milne, Hong-Xia Zhou, Jiang-Yu Fang, Hong-Guang Zha
Floral nectar can affect the fitness of insect-pollinated plants, through both attraction and manipulation of pollinators. Self-incompatible insect-pollinated plants receive more insect visits than their self-compatible relatives, and the nectar of such species might face more risk to be infested by the pathogens carried by pollinators than self-compatible plants. Proteins in nectar (nectarins) play an important role in the protection of nectar, but little is known regarding nectarins in self-incompatible species...
May 20, 2017: Plant Biology
https://www.readbyqxmd.com/read/28544082/a-resource-of-potential-drug-targets-and-strategic-decision-making-for-obstructive-sleep-apnoea-pharmacotherapy
#14
REVIEW
Richard L Horner, Kevin P Grace, Andrew Wellman
There is currently no pharmacotherapy for obstructive sleep apnoea (OSA) but there is no principled a priori reason why there should not be one. This review identifies a rational decision-making strategy with the necessary logical underpinnings that any reasonable approach would be expected to navigate to develop a viable pharmacotherapy for OSA. The process first involves phenotyping an individual to quantify and characterize the critical predisposing factor(s) to their OSA pathogenesis and identify, a priori, if the patient is likely to benefit from a pharmacotherapy that targets those factors...
May 25, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28544046/time-related-changes-in-firing-rates-are-influenced-by-recruitment-threshold-and-twitch-force-potentiation-in-the-first-dorsal-interosseous
#15
Jonathan D Miller, Trent J Herda, Michael A Trevino, Adam J Sterczala, Anthony B Ciccone
There are contradictory reports regarding changes in motor unit firing rates during steady force contractions. Inconsistencies are likely the result of previous studies disregarding motor unit recruitment thresholds and not examining firing rates on a subject-by-subject basis. It is hypothesized that firing rates are manipulated by twitch force potentiation during contractions. Therefore, this study examined time-related changes in firing rates at steady force in relation to motor unit recruitment threshold in the first dorsal interosseous and the influence of twitch force potentiation on such changes in young versus aged individuals...
May 24, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28543944/anterior-cingulate-cortex-supports-effort-allocation-toward-a-qualitatively-preferred-option
#16
Evan E Hart, Julian O Gerson, Yael Zoken, Marisella Garcia, Alicia Izquierdo
The anterior cingulate cortex (ACC) is known to be involved in effortful choice, yet its role in cost-benefit evaluation of qualitatively different rewards (more/less preferred), beyond magnitude differences (larger/smaller), is poorly understood. Selecting between qualitatively different options is a decision type commonly faced by humans. Here we assessed the role of ACC on a task that has primarily been used to probe striatal function in motivation. Rats were trained to stable performance on a progressive ratio schedule for sucrose pellets and were then given sham surgeries (control) or excitotoxic NMDA-lesions of ACC...
May 20, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28543756/perventricular-device-closure-of-doubly-committed-sub-arterial-ventricular-septal-defects-via-a-left-infra-axillary-approach
#17
Sijie Zhou, Liyun Zhao, Taibing Fan, Bin Li, Weijie Liang, Haoju Dong, Shubo Song, Lin Liu
BACKGROUND: This study sought to evaluate the feasibility, safety, and efficacy of perventricular device closure of a doubly committed sub-arterial ventricular septal defect (dcVSD) through a left infra-axillary approach. METHOD: Forty-five patients, with a dcVSD of less than 8 mm in diameter, were enrolled in this study. The pericardium was exposed and opened through a left infra-axillary mini-incision. Two parallel purse-string sutures were placed on the right ventricle outflow tract and under transesophageal echocardiography guidance, a delivery sheath loaded with the device was inserted into the right ventricle and advanced through the defect into the left ventricle...
May 24, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28543228/scenario-evaluator-for-electrical-resistivity-survey-pre-modeling-tool
#18
Neil Terry, Frederick D Day-Lewis, Judith L Robinson, Lee D Slater, Keith Halford, Andrew Binley, John W Lane, Dale Werkema
Geophysical tools have much to offer users in environmental, water resource, and geotechnical fields; however, techniques such as electrical resistivity imaging (ERI) are often oversold and/or overinterpreted due to a lack of understanding of the limitations of the techniques, such as the appropriate depth intervals or resolution of the methods. The relationship between ERI data and resistivity is nonlinear; therefore, these limitations depend on site conditions and survey design and are best assessed through forward and inverse modeling exercises prior to field investigations...
May 23, 2017: Ground Water
https://www.readbyqxmd.com/read/28543021/a-30-year-systematic-review-and-meta-analysis-of-hepatitis%C3%A2-b-virus-among-blood-donors-in-mainland-china-revealing-increase-of-new-threats
#19
Zhan Gao, Yu Zhang, Hua Shan, Ling Shi, Jing Liu, Min Xu, Peibin Zeng, Yu Liu, Miao He
BACKGROUND: Although screening strategies have been routinely implemented in blood centers, the residual risk of transfusion-transmitted hepatitis B virus (HBV) still poses a public health concern in China. The aim of this study is to investigate the HBV blood screening reactive rate and to illustrate the demographics of the corresponding blood donors with revealing of heterogeneity between previous studies and discovering potentially negligent threats. STUDY DESIGN AND METHODS: Literature reporting the HBV screening reactive rate in Chinese blood donors was identified by systematic searching of four electronic databases...
May 19, 2017: Transfusion
https://www.readbyqxmd.com/read/28542927/research-review-what-do-we-know-about-psychopathic-traits-in-children
#20
Randall T Salekin
BACKGROUND: Research on the topic of child psychopathy has advanced over the past decade increasing what we know. METHOD: This qualitative review examines the research base for child psychopathy and emphasizes its three dimensions: grandiose-manipulative, callous-unemotional, and daring-impulsive. Literature is reviewed addressing the cognitive, emotional, motivational, personality, parenting, and biological correlates. RESULTS: Support has emerged for the phenotypic construct of child psychopathy, while questions remain regarding definitional issues and key external correlates (e...
May 24, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
keyword
keyword
19181
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"