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https://www.readbyqxmd.com/read/28100736/methyl-cpg-binding-protein-mbd1-regulates-neuronal-lineage-commitment-through-maintaining-adult-neural-stem-cell-identity
#1
Emily M Jobe, Yu Gao, Brian E Eisinger, Janessa K Mladucky, Charles C Giuliani, Laurel E Kelnhofer, Xinyu Zhao
: Methyl-CpG-binding domain 1 (MBD1) belongs to a family of methyl-CpG-binding proteins that are epigenetic "readers" linking DNA methylation to transcriptional regulation. MBD1 is expressed in neural stem cells residing in the dentate gyrus of the adult hippocampus (aNSCs) and MBD1 deficiency leads to reduced neuronal differentiation, impaired neurogenesis, learning deficits, and autism-like behaviors in mice; however, the precise function of MBD1 in aNSCs remains unexplored. Here, we show that MBD1 is important for maintaining the integrity and stemness of NSCs, which is critical for their ability to generate neurons...
January 18, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28099883/beta2-adrenergic-signaling-affects-the-phenotype-of-human-cardiac-progenitor-cells-through-emt-modulation
#2
Francesca Pagano, Francesco Angelini, Camilla Siciliano, Julia Tasciotti, Giorgio Mangino, Elena De Falco, Roberto Carnevale, Sebastiano Sciarretta, Giacomo Frati, Isotta Chimenti
Human cardiac progenitor cells (CPCs) offer great promises to cardiac cell therapy for heart failure. Many in vivo studies have shown their therapeutic benefits, paving the way for clinical translation. The 3D model of cardiospheres (CSs) represents a unique niche-like in vitro microenvironment, which includes CPCs and supporting cells. CSs have been shown to form through a process mediated by epithelial-to-mesenchymal transition (EMT). β2-adrenergic signaling significantly affects stem/progenitor cells activation and mobilization in multiple tissues, and crosstalk between β2-adrenergic signaling and EMT processes has been reported...
January 15, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28093882/the-gastrointestinal-tract-of-farmed-mink-neovison-vison-maintains-a-diverse-mucosa-associated-microbiota-following-a-3-day-fasting-period
#3
Martin I Bahl, Anne S Hammer, Tove Clausen, Anabelle Jakobsen, Søren Skov, Lars Andresen
Although it is well documented that the gut microbiota plays an important role in health and disease in mammalian species, this area has been poorly studied among carnivorous animals, especially within the mustelidae family. The gastrointestinal tract of carnivores is characterized by its short length and fast transit time, as compared to omnivores and herbivores, which is due to the low level of inherent fermentation. Mink represents an example of this, which have a GI tract only four times the length of the body and a transit time of approximately 4-5 hr...
January 16, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28092429/residents-understanding-of-adult-congenital-heart-disease
#4
Paul Cooper, Morgan Hindes, Timothy M Maul, Stephen C Cook
OBJECTIVE: Medical residents are exposed to increasing numbers of adults with congenital heart disease (ACHD). While inadequate ACHD knowledge may lead to inappropriate practice, this educational deficit has not been investigated. Our aim was to analyze residents' attitudes, perceived ability, and knowledge of ACHD medicine. DESIGN, METHODS, OUTCOME MEASURES: A single center, multiprogram cross-sectional study was conducted in 2015 using an electronic survey to assess 472 medical residents' perceived knowledge and self-assessed skills related to ACHD medicine...
January 16, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28092266/tgf-%C3%AE-reduces-dna-ds-break-repair-mechanisms-to-heighten-genetic-diversity-and-adaptability-of-cd44-cd24-cancer-cells
#5
Debjani Pal, Anja Pertot, Nitin H Shirole, Zhan Yao, Naishitha Anaparthy, Tyler Garvin, Hilary Cox, Kenneth Chang, Fred Rollins, Jude Kendall, Leyla Edwards, Vijay A Singh, Gary C Stone, Michael C Schatz, James Hicks, Gregory Hannon, Raffaella Sordella
Many lines of evidence have indicated that both genetic and non-genetic determinants can contribute to intra-tumor heterogeneity and influence cancer outcomes. Among the best described sub-population of cancer cells generated by non-genetic mechanisms are cells characterized by a CD44+/CD24- cell surface marker profile. Here, we report that human CD44+/CD24- cancer cells are genetically highly unstable due to intrinsic defects in their DNA repair capabilities. In fact, in CD44+/CD24- cells constitutive activation of the TGF-beta axis was both necessary and sufficient to reduce the expression of genes that are critical in coordinating DNA damage repair mechanisms...
January 16, 2017: ELife
https://www.readbyqxmd.com/read/28086861/managing-shades-of-grey-a-focus-group-study-exploring-community-dwellers-views-on-advance-care-planning-in-older-people
#6
Natasha Michael, Clare O'Callaghan, Emma Sayers
BACKGROUND: Community-dwelling consumers of healthcare are increasing, many aging with life-limiting conditions and deteriorating cognition. However, few have had advance care planning discussions or completed documentation to ensure future care preferences are acted upon. This study examines the awareness, attitudes, and experiences of advance care planning amongst older people and unrelated offspring/caregivers of older people residing in the community. METHODS: Qualitative descriptive research, which included focus groups with older people (55+ years) and older people's offspring/caregivers living in an Australian city and surrounding rural region...
January 13, 2017: BMC Palliative Care
https://www.readbyqxmd.com/read/28080056/metadynamics-simulations-distinguish-short-and-long-residence-time-inhibitors-of-cyclin-dependent-kinase-8
#7
Donatella Callegari, Alessio Lodola, Daniele Pala, Silvia Rivara, Marco Mor, Andrea Rizzi, Anna Maria Capelli
The duration of drug efficacy in vivo is a key aspect primarily addressed during the lead optimization phase of drug discovery. Hence, the availability of robust computational approaches that can predict the residence time of a compound at its target would accelerate candidate selection. Nowadays the theoretical prediction of this parameter is still very challenging. Starting from methods reported in the literature, we set up and validated a new metadynamics (META-D)-based protocol that was used to rank the experimental residence times of 10 arylpyrazole cyclin-dependent kinase 8 (CDK8) inhibitors for which target-bound X-ray structures are available...
January 12, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28075225/plants-contain-small-families-of-upf0016-proteins-including-the-photosynthesis-affected-mutant71-transporter
#8
Natalie Hoecker, Dario Leister, Anja Schneider
PHOTOSYNTHESIS AFFECTED MUTANT71 (PAM71) is an integral thylakoid membrane protein that functions in manganese uptake into the lumen. Manganese is needed in the thylakoid lumen to build up the inorganic Mn4CaO5 cluster, the catalytic center for water oxidation, and is hence indispensable for oxygen evolution. A recent study revealed that PAM71 is well conserved in plants and shares homology to GCR1 DEPENDENT TRANSLATION FACTOR1 (GDT1) and TRANSMEMBRANE PROTEIN 165 (TMEM165) in Saccharomyces cerevisiae and Homo sapiens, respectively...
January 11, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28069669/refining-the-molecular-organization-of-the-cardiac-intercalated-disc
#9
REVIEW
Sarah H Vermij, Hugues Abriel, Toon A B van Veen
This review presents an extensively integrated model of the cardiac intercalated disc (ID), a highly orchestrated structure that connects adjacent cardiomyocytes. Classically, three main structures are distinguished: gap junctions (GJs) metabolically and electrically connect cytoplasm of adjacent cardiomyocytes; adherens junctions (AJs) connect the actin cytoskeleton of adjacent cells; and desmosomes function as cell anchors and connect intermediate filaments. Furthermore, ion channels reside in the ID. Mutations in ID proteins have been associated with cardiac arrhythmias such as Brugada syndrome and arrhythmogenic cardiomyopathy...
January 8, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28063988/engineered-extracellular-microenvironment-with-a-tunable-mechanical-property-for-controlling-cell-behavior-and-cardiomyogenic-fate-of-cardiac-stem-cells
#10
Min-Young Choi, Jong-Tae Kim, Won-Jin Lee, Yunki Lee, Kyung Min Park, Young-Il Yang, Ki Dong Park
: Endogenous cardiac stem cells (CSCs) are known to play a certain role in the myocardial homeostasis of the adult heart. The extracellular matrix (ECM) surrounding CSCs provides mechanical signals to regulate a variety of cell behaviors, yet the impact in the adult heart of these mechanical properties of ECM on CSC renewal and fate decisions is mostly unknown. To elucidate CSC mechanoresponses at the individual cell and myocardial level, we used the sol-to-gel transitional gelatin-poly(ethylene glycol)-tyramine (GPT) hydrogel with a tunable mechanical property to construct a three-dimensional (3D) matrix for culturing native myocardium and CSCs...
January 4, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28059121/structural-effects-of-lanthanide-dopants-on-alumina
#11
Ketan Patel, Victoria Blair, Justin Douglas, Qilin Dai, Yaohua Liu, Shenqiang Ren, Raymond Brennan
Lanthanide (Ln(3+)) doping in alumina has shown great promise for stabilizing and promoting desirable phase formation to achieve optimized physical and chemical properties. However, doping alumina with Ln elements is generally accompanied by formation of new phases (i.e. LnAlO3, Ln2O3), and therefore inclusion of Ln-doping mechanisms for phase stabilization of the alumina lattice is indispensable. In this study, Ln-doping (400 ppm) of the alumina lattice crucially delays the onset of phase transformation and enables phase population control, which is achieved without the formation of new phases...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28058428/incorporation-of-aspirin-modulates-the-dynamical-and-phase-behavior-of-the-phospholipid-membrane
#12
V K Sharma, E Mamontov, M Ohl, M Tyagi
Nonsteroidal anti-inflammatory drugs (NSAIDs) are one of the most widely used medications in the world for their analgesic, antipyretic, and anti-inflammatory actions, despite a well-known incidence of a wide spectrum of their adverse effects. To a great extent, beneficial action and side effects of NSAIDs are associated with the interaction of these drugs at the cell membrane level. Here, we use neutron scattering to combine elastic intensity scans, quasielastic and neutron spin echo (NSE) measurements to understand the effect of aspirin, a commonly used NSAID, on the dynamical and phase behavior of the membrane of dimyristoylphosphatidylcholine (DMPC), a prominent representative of phospholipids residing in the outer leaflet of the human erythrocyte membrane...
January 18, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28045906/classification-of-animal-movement-behavior-through-residence-in-space-and-time
#13
Leigh G Torres, Rachael A Orben, Irina Tolkova, David R Thompson
Identification and classification of behavior states in animal movement data can be complex, temporally biased, time-intensive, scale-dependent, and unstandardized across studies and taxa. Large movement datasets are increasingly common and there is a need for efficient methods of data exploration that adjust to the individual variability of each track. We present the Residence in Space and Time (RST) method to classify behavior patterns in movement data based on the concept that behavior states can be partitioned by the amount of space and time occupied in an area of constant scale...
2017: PloS One
https://www.readbyqxmd.com/read/28045498/spectroscopic-studies-of-the-eutt-adenosyltransferase-from-salmonella-enterica-evidence-of-a-tetrahedrally-coordinated-divalent-transition-metal-cofactor-with-cysteine-ligation
#14
Ivan G Pallares, Theodore C Moore, Jorge C Escalante-Semerena, Thomas C Brunold
The EutT enzyme from Salmonella enterica, a member of the family of ATP:cobalt(I) corrinoid adenosyltransferase (ACAT) enzymes, requires a divalent transition metal ion for catalysis, with Fe(II) yielding the highest activity. EutT contains a unique cysteine-rich HX11CCX2C(83) motif (where H and the last C occupy the 67th and 83rd positions, respectively, in the amino acid sequence) not found in other ACATs and employs an unprecedented mechanism for the formation of adenosylcobalamin. Recent kinetic and spectroscopic studies of this enzyme revealed that residues in the HX11CCX2C(83) motif are required for the tight binding of the divalent metal ion and are critical for the formation of a four-coordinate (4c) cob(II)alamin [Co(II)Cbl] intermediate in the catalytic cycle...
January 17, 2017: Biochemistry
https://www.readbyqxmd.com/read/28042513/the-development-of-children-placed-into-different-types-of-russian-families-following-an-institutional-intervention
#15
Robert B McCall, Rifkat J Muhamedrahimov, Christina J Groark, Oleg I Palmov, Natalia V Nikiforova, Jennifer L Salaway, Megan M Julian
This study examined whether interventions in Russian Baby Homes promoting warm, sensitive, and responsive caregiver-child interactions and relationships would be associated with advantages in those children's behavior years after they transitioned to family care. Children (N = 135) who had resided for at least 3 months (M = 13.8 months) in one of three intervention institutions were subsequently placed in Russian families (relatives or non-relatives) for at least 1 year (M = 33.5 months). When children were 1...
October 2016: International Perspectives in Psychology: Research, Practice, Consultation
https://www.readbyqxmd.com/read/28039266/malignant-astrocytic-tumor-progression-potentiated-by-jak-mediated-recruitment-of-myeloid-cells
#16
Prajwal Rajappa, William S Cobb, Emma Vartanian, Yujie Huang, Laura Daly, Caitlin Hoffman, Jane Zhang, Beiyi Shen, Rachel Yanowitch, Kunal Garg, Babacar Cisse, Sara Haddock, Jason T Huse, David J Pisapia, Timothy A Chan, David Lyden, Jacqueline Bromberg, Jeffrey P Greenfield
PURPOSE: While the tumor microenvironment has been known to play an integral role in tumor progression, the function of non-resident bone marrow-derived cells (BMDCs) remains to be determined in neurological tumors. Here we identified the contribution of BMDC recruitment in mediating malignant transformation from low- to high-grade gliomas. EXPERIMENTAL DESIGN: We analyzed human blood and tumor samples from patients with low- and high-grade gliomas. A spontaneous platelet derived growth factor (PDGF) murine glioma model (RCAS) was utilized to recapitulate human disease progression...
December 30, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28036143/resource-abundance-and-the-critical-transition-to-cooperation
#17
Brian D Connelly, Eric L Bruger, Philip K McKinley, Christopher M Waters
Cooperation is abundant in nature, occurring at all levels of biological complexity. Yet cooperation is continually threatened by subversion from non-cooperating cheaters. Previous studies have shown that cooperation can nevertheless be maintained when the benefits that cooperation provides to relatives outweigh the associated costs. These fitness costs and benefits are not fixed properties, but can be affected by the environment in which populations reside. Here, we describe how one environmental factor, resource abundance, decisively affects the evolution of cooperative public goods production in two independent evolving systems...
December 30, 2016: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/28033485/acculturation-needs-of-pediatric-international-medical-graduates-a-qualitative-study
#18
Amanda D Osta, Michelle M Barnes, Regina Pessagno, Alan Schwartz, Laura E Hirshfield
: Phenomenon: International medical graduates (IMGs) play a key role in host countries' health systems but face unique challenges, which makes effective, tailored support for IMGs essential. Prior literature describing the acculturation needs of IMGs focused primarily on communication content and style. We conducted a qualitative study to explore acculturation that might be specific to IMG residents who care for children. APPROACH: In a study conducted from November 2011 to April 2012, we performed four 90-minute semistructured focus groups with 26 pediatric IMG residents from 12 countries...
December 29, 2016: Teaching and Learning in Medicine
https://www.readbyqxmd.com/read/28032238/sociocultural-and-environmental-influences-on-brazilian-immigrant-mothers-beliefs-and-practices-related-to-child-feeding-and-weight-status
#19
Ana Cristina Lindsay, Sherrie F Wallington, Mary L Greaney, Maria H Hasselman, Marcia M T Machado, Raquel S Mezzavilla, Barbara M Detro
Background Length of residence in the United States (US), changes in dietary and physical activity behaviors, and economic and social barriers contribute to high childhood obesity rates among children from immigrant families in the US. Brazilians comprise a fast-growing immigrant population group in the US, yet little research has focused on health issues affecting Brazilian children in immigrant families. Understanding sociocultural and environmental influences on parents' beliefs and practices related to child feeding and weight status is essential to altering obesity trends in this group...
December 28, 2016: Maternal and Child Health Journal
https://www.readbyqxmd.com/read/28028435/age-or-health-status-which-influences-medical-insurance-enrollment-greater
#20
Wei Xu, Gong-Jie Cai, Guan-Nan Li, Jing-Jing Cao, Qiong-Hua Shi, Jie Bai
BACKGROUND: The New Cooperative Medical Scheme (NCMS) for peasantries implemented in 2003 and the Urban Resident Basic Medical Insurance (URBMI) for the urban unemployed implemented in 2007 have many similarities. They both apply the financing mode of individual premiums plus government's subsidies, and the voluntary enrollment. The Chinese government plans to integrate these two systems and build a unified basic medical insurance system for the unemployed in order to achieve the medical equity and increase the general health level...
December 2016: Journal of Global Health
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