keyword
MENU ▼
Read by QxMD icon Read
search

discover

keyword
https://www.readbyqxmd.com/read/28545125/causal-interactions-in-resting-state-networks-predict-perceived-loneliness
#1
Yin Tian, Li Yang, Sifan Chen, Daqing Guo, Zechao Ding, Kin Yip Tam, Dezhong Yao
Loneliness is broadly described as a negative emotional response resulting from the differences between the actual and desired social relations of an individual, which is related to the neural responses in connection with social and emotional stimuli. Prior research has discovered that some neural regions play a role in loneliness. However, little is known about the differences among individuals in loneliness and the relationship of those differences to differences in neural networks. The current study aimed to investigate individual differences in perceived loneliness related to the causal interactions between resting-state networks (RSNs), including the dorsal attentional network (DAN), the ventral attentional network (VAN), the affective network (AfN) and the visual network (VN)...
2017: PloS One
https://www.readbyqxmd.com/read/28545104/pkng-senses-amino-acid-availability-to-control-metabolism-and-virulence-of-mycobacterium-tuberculosis
#2
Barbara Rieck, Giulia Degiacomi, Michael Zimmermann, Alessandro Cascioferro, Francesca Boldrin, Natalie R Lazar-Adler, Andrew R Bottrill, Fabien le Chevalier, Wafa Frigui, Marco Bellinzoni, María-Natalia Lisa, Pedro M Alzari, Liem Nguyen, Roland Brosch, Uwe Sauer, Riccardo Manganelli, Helen M O'Hare
Sensing and response to changes in nutrient availability are essential for the lifestyle of environmental and pathogenic bacteria. Serine/threonine protein kinase G (PknG) is required for virulence of the human pathogen Mycobacterium tuberculosis, and its putative substrate GarA regulates the tricarboxylic acid cycle in M. tuberculosis and other Actinobacteria by protein-protein binding. We sought to understand the stimuli that lead to phosphorylation of GarA, and the roles of this regulatory system in pathogenic and non-pathogenic bacteria...
May 17, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28545042/hierarchical-ordering-with-partial-pairwise-hierarchical-relationships-on-the-macaque-brain-data-sets
#3
Woosang Lim, Jungsoo Lee, Yongsub Lim, Doo-Hwan Bae, Haesun Park, Dae-Shik Kim, Kyomin Jung
Hierarchical organizations of information processing in the brain networks have been known to exist and widely studied. To find proper hierarchical structures in the macaque brain, the traditional methods need the entire pairwise hierarchical relationships between cortical areas. In this paper, we present a new method that discovers hierarchical structures of macaque brain networks by using partial information of pairwise hierarchical relationships. Our method uses a graph-based manifold learning to exploit inherent relationship, and computes pseudo distances of hierarchical levels for every pair of cortical areas...
2017: PloS One
https://www.readbyqxmd.com/read/28544932/vascular-homing-peptides-for-cancer-therapy
#4
REVIEW
Lan Lu, Huan Qi, Jie Zhu, Wen Xia Sun, Bin Zhang, Chun Yan Tang, Qiang Cheng
In the past 30 years, a variety of phage libraries have been extensively utilized to identify and develop tumor homing peptides (THPs). THPs specifically bind to tumor cells or elements of the tumor microenvironment while no or low affinity to normal cells. In this regard, the efficacy of therapeutic agents in cancer therapy can be enhanced by targeting strategies based on coupling with THPs that recognize receptors expressed by tumor cells or tumor vasculature. Especially, vascular-homing peptides, targeting tumor vasculature, have their receptors expressed on or around the blood vessel including pro-angiogenic factors, metalloproteinase, integrins, fibrin-fibronectin complexes, etc...
May 22, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28544768/examining-practical-nursing-experiences-to-discover-ways-in-which-to-retain-and-invigorate-the-remaining-functions-of-the-elderly-with-a-demented-and-complex-disability-in-nursing-homes
#5
Min-Sun Park, Sun-Young Lim, Eun-Young Kim, Su-Jung Lee, Sung-Ok Chang
AIM: The bedridden elderly with moderate-to-severe dementia account for a large proportion of the residents in nursing homes and form a specialized group requiring customized care in order to encourage their remaining functions, which determine the quality of their residual life. The purpose of this study was to search for ways to invigorate and foster the remaining functions of this complex-disability group, based on practical nursing strategies in nursing homes. METHODS: The qualitative thematic analysis was done by conducting in-depth interviews with 29 nurses working at 11 different nursing homes in South Korea...
May 23, 2017: Japan Journal of Nursing Science: JJNS
https://www.readbyqxmd.com/read/28544683/comprehensive-genetic-study-of-cystic-fibrosis-in-slovak-patients-in-25-years-of-genetic-diagnostics
#6
Andrea Soltysova, Eva Tothova Tarova, Andrej Ficek, Marian Baldovic, Helena Polakova, Hana Kayserova, Ludevit Kadasi
INTRODUCTION: Cystic fibrosis (CF) has one of the longest histories in hereditary disease molecular diagnostics. However, identification of causative mutations in the CFTR gene is complicated by over two thousand currently identified mutations; with more still being discovered. Knowledge of mutation spectrum may improve effective routine diagnostics and is obligatory in mutation-specific treatment. OBJECTIVES: This study presents comprehensive mutation screening of the CFTR gene; with 275 unrelated, clinically confirmed and treated cystic fibrosis (CF) patients diagnosed in 25 years genetic testing in Slovakia...
May 20, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28544664/to-reproduce-or-work-insect-castes-emerge-from-socially-induced-changes-in-nutrition-related-genes
#7
Amy L Toth
In social species, there is a fundamental trade-off between 'me' and 'we'; that is, should I reproduce, or should I work to help others to reproduce? In this issue of Molecular Ecology, Okada et al. () delve into the evolution and genetic mechanisms of this core question, focusing on social caste formation in insects. The authors take advantage of a unique ant in the genus Diacamma, which has secondarily lost the classic, highly different queens and workers found in many other ants, bees and wasps. Instead, Diacamma ant castes are decided via aggressive dominance interactions among adult females, similar to dominance hierarchies seen in primitively social insects and many social vertebrates...
June 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28544658/the-evolution-of-stories-from-mimesis-to-language-from-fact-to-fiction
#8
REVIEW
Brian Boyd
Why a species as successful as Homo sapiens should spend so much time in fiction, in telling one another stories that neither side believes, at first seems an evolutionary riddle. Because of the advantages of tracking and recombining true information, capacities for event comprehension, memory, imagination, and communication evolved in a range of animal species-yet even chimpanzees cannot communicate beyond the here and now. By Homo erectus, our forebears had reached an increasing dependence on one another, not least in sharing information in mimetic, prelinguistic ways...
May 24, 2017: Wiley Interdisciplinary Reviews. Cognitive Science
https://www.readbyqxmd.com/read/28544567/chemoproteomics-aided-medicinal-chemistry-for-the-discovery-of-epha2-inhibitors
#9
Stephanie Heinzlmeir, Jonas Lohse, Tobias Treiber, Denis Kudlinzki, Verena Linhard, Santosh Lakshmi Gande, Sridhar Sreeramulu, Krishna Saxena, Xiaofeng Liu, Mathias Wilhelm, Harald Schwalbe, Bernhard Kuster, Guillaume Médard
The receptor tyrosine kinase EPHA2 has gained interest as therapeutic drug target in cancer and infectious diseases. However, EPHA2 research and EPHA2-based therapies have been hampered by the lack of selective small molecule inhibitors. Here, we report on the synthesis and evaluation of dedicated EPHA2 inhibitors based on the clinical BCR-ABL/SRC inhibitor Dasatinib as a lead structure. We designed hybrid structures of Dasatinib and the previously known EPHA2 binders CHEMBL249097, PD-173955 and a known EPHB4 inhibitor in order to exploit both the ATP pocket entrance as well as the ribose pocket as binding epitopes in the kinase EPHA2...
May 24, 2017: ChemMedChem
https://www.readbyqxmd.com/read/28544531/the-drb1-15-11-allele-discovered-in-a-taiwanese-unrelated-hematopoietic-stem-cell-donor
#10
K L Yang, P Y Lin
One nucleotide substitution at residue 227 of HLA-DRB1*15:02:01:01 results in a new allele, HLA-DRB1*15:11.
May 24, 2017: HLA
https://www.readbyqxmd.com/read/28544494/4-substituted-thieno-2-3-d-pyrimidines-as-potent-antibacterial-agents-rational-design-microwave-assisted-synthesis-biological-evaluation-and-molecular-docking-studies
#11
Rupinder K Gill, Harpreet Singh, Tilak Raj, Anuradha Sharma, Gagandeep Singh, Jitender Bariwal
In an attempt to discover a new class of antibacterial agents with improved efficacy and to overcome the drug resistant problems, some novel 4-substituted thieno[2,3-d]pyrimidines have been synthesized via microwave assisted methodology and evaluated for their in vitro antibacterial activity against various pathogenic bacterial strains. Compounds 12b and 13c showed the promising inhibitory potencies against S. aureus, B. subtilis, P. aeruginosa and E. coli with MICs ranging from 2 to 10 μg/ml. Compound 13c was also found to be highly potent against methicillin resistant S...
May 23, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28544476/usefulness-of-a-decision-tree-model-for-the-analysis-of-adverse-drug-reactions-evaluation-of-a-risk-prediction-model-of-vancomycin-associated-nephrotoxicity-constructed-using-a-data-mining-procedure
#12
Shungo Imai, Takehiro Yamada, Kumiko Kasashi, Masaki Kobayashi, Ken Iseki
OBJECTIVES: Several publications concerning decision tree (DT) analysis in medical fields have recently demonstrated its usefulness for defining prognostic factors in various diseases. However, there are minimal reports on the predictors of adverse drug reactions. We attempted to use DT analysis to discover combinations of multiple risk factors that would increase the risk of nephrotoxicity associated with vancomycin (VCM). To demonstrate the usefulness of DT analysis, we compared its predictive performance with that of multiple logistic regression analysis...
May 23, 2017: Journal of Evaluation in Clinical Practice
https://www.readbyqxmd.com/read/28544464/structural-and-biochemical-insights-into-the-2-o-methylation-of-pyrimidines-34-in-trna
#13
Panjiao Pang, Xiangyu Deng, Zhong Wang, Wei Xie
tRNA molecules undergo extensive modifications during their maturation process and these modifications play important cellular roles. TrmL is a tRNA-modification enzyme that catalyzes the transfer of a methyl group to the 2' hydroxyl group of the pyrimidines at the wobble position 34 in two tRNA(L)(eu) isoacceptors, but the mechanism remains elusive. In this study, we determined the crystal structure of TrmL from Thermus Thermophilus (TtTrmL) to 1.7 Å. The enzyme contains only the conserved minimal SPOUT fold, but displays distinct biochemical behaviors from its Escherichia coli counterpart EcTrmL...
May 25, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28544417/rapid-discovery-and-identification-of-the-prototypes-and-their-metabolites-of-da-huang-xiao-shi-decoction-in-rat-plasma-by-an-integrative-strategy-based-on-liquid-chromatography-coupled-with-mass-spectrometry
#14
Dan Wang, Qingshui Shi, Fang Feng
Da-Huang-Xiao-Shi decoction has been used to treat damp-heat jaundice for centuries in China. However, the absorbed components of the decoction and their related metabolites are little known till now. In this work, an integrative strategy based on liquid chromatography coupled with mass spectrometry (time-of-flight/triple-quadruple tandem) was adopted to effectively identify the prototypes and their metabolites and to speculate the possible transformation pathways among these compounds. Using pattern recognition approaches, the exogenous compounds in rat plasma were screened out from endogenous compounds and then distinguished into prototypes and metabolites according to the characteristic information from the self-building database of Da-Huang-Xiao-Shi decoction...
May 24, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28544218/genome-wide-mediation-analysis-of-psychiatric-and-cognitive-traits-through-imaging-phenotypes
#15
Xuan Bi, Liuqing Yang, Tengfei Li, Baisong Wang, Hongtu Zhu, Heping Zhang
Heritability is well documented for psychiatric disorders and cognitive abilities which are, however, complex, involving both genetic and environmental factors. Hence, it remains challenging to discover which and how genetic variations contribute to such complex traits. In this article, they propose to use mediation analysis to bridge this gap, where neuroimaging phenotypes were utilized as intermediate variables. The Philadelphia Neurodevelopmental Cohort was investigated using genome-wide association studies (GWAS) and mediation analyses...
May 22, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28544077/identification-and-analysis-of-5-enolpyruvylshikimate-3-phosphate-synthase-epsps-gene-from-glyphosate-resistant-ochrobactrum-intermedium-sq20
#16
Sadiqa Firdous, Samina Iqbal, Samina Anwar, Hina Jabeen
BACKGROUND: Glyphosate is a herbicide that acts by inhibition of the enzyme, 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS), entailed in catalysis of an essential step in the biosynthesis of aromatic amino acids. The objective of the current study was to isolate glyphosate resistant bacterial strains and subsequent characterization of the gene(s) encoding glyphosate resistance in these isolates. By enrichment culture technique, a glyphosate resistant bacterium, Ochrobactrum intermedium Sq20 was isolated from glyphosate contaminated indigenous soil and characterized...
May 25, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28543850/structures-and-kinetics-for-plant-nucleoside-triphosphate-diphosphohydrolases-ntpdases-support-a-domain-motion-catalytic-mechanism
#17
Emma L Summers, Mathew H Cumming, Tifany Oulavallickal, Nick Roberts, Vickery L Arcus
Extracellular nucleoside triphosphate diphosphohydrolases (NTPDases) are enzymes that hydrolyse extracellular nucleotides to the respective monophosphate nucleotides. In the past 20 years, NTPDases belonging to mammalian, parasitic and prokaryotic domains of life have been discovered, cloned and characterized. We reveal the first structures of NTPDases from the legume plant species Trifolium repens (7WC) and Vigna unguiculata subsp. cylindrica (DbLNP). Four crystal structures of 7WC and DbLNP were determined at resolutions between 1...
May 24, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/28543793/positive-emotions-in-caring-for-a-spouse-a-literature-review
#18
REVIEW
Tiina Autio, Sari Rissanen
This article aimed at identifying the positive emotions connected to spouse caregiving and the advantages for spouse carers. Theoretically, the article is based on the concept of emotion and the assumptions of positive psychology. Data search is conducted via electronic literature databases and the analysis method is partly theory-driven and partly inductive content classification. Our analyses discover and clarify the concepts associated with positive emotions in caring, such as the gains of caregiving, benefit-finding, finding meaning, personal growth, post-traumatic growth and resilience...
May 24, 2017: Scandinavian Journal of Caring Sciences
https://www.readbyqxmd.com/read/28543713/potential-protective-role-of-grainyhead-like-genes-in-the-development-of-clear-cell-renal-cell-carcinoma
#19
Magdalena Pawlak, Agnieszka Kikulska, Tomasz Wrzesinski, Tobias Rausch, Zbigniew Kwias, Bartek Wilczynski, Vladimir Benes, Joanna Wesoly, Tomasz Wilanowski
The involvement of Grainyhead-like (GRHL) transcription factors in various cancers is well documented. However, little is known about their role in clear cell renal cell carcinoma (ccRCC). We discovered that the expression of two of these factors - GRHL1 and GRHL2-is downregulated in ccRCC samples, and their expression is correlated with the expression of VHL gene. This suggests a functional link between the GRHL transcription factors and one of the best known tumor suppressors. Although the GRHL genes are not mutated in ccRCC, some of the single nucleotide polymorphisms in these genes may indicate an increased risk of ccRCC development and/or may allow to assess patients' prognoses and predict their responses to various forms of therapy...
May 23, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28543693/somatic-driver-mutations-in-melanoma
#20
REVIEW
Bobby Y Reddy, David M Miller, Hensin Tsao
Melanoma has one of the highest somatic mutational burdens among solid malignancies. Although the rapid progress in genomic research has contributed immensely to our understanding of the pathogenesis of melanoma, the clinical significance of the vast array of genomic alterations discovered by next-generation sequencing is far from being fully characterized. Most mutations prevalent in melanoma are simply neutral "passengers," which accompany functionally significant "drivers" under transforming conditions. The delineation of driver mutations from passenger mutations is critical to the development of targeted therapies...
June 1, 2017: Cancer
keyword
keyword
111963
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"