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https://www.readbyqxmd.com/read/29458175/maintenance-of-hematopoietic-stem-and-progenitor-cells-in-fetal-intra-aortic-hematopoietic-clusters-by-the-sox17-notch1-hes1-axis
#1
Kiyoka Saito, Ikuo Nobuhisa, Kaho Harada, Satomi Takahashi, Maha Anani, Heiko Lickert, Masami Kanai-Azuma, Yoshiakira Kanai, Tetsuya Taga
The aorta-gonad-mesonephros region, from which definitive hematopoiesis first arises in midgestation mouse embryos, has intra-aortic hematopoietic clusters (IAHCs) containing hematopoietic stem cells (HSCs) and hematopoietic progenitor cells (HPCs). We previously reported expression of the transcription factor Sox17 in IAHCs, and overexpression of Sox17 in CD45low c-KIThigh cells comprising IAHCs maintains the formation of cell clusters and their multipotency in vitro over multiple passages. Here, we demonstrate the importance of NOTCH1 in IAHC formation and maintenance of the HSC/HPC phenotype...
February 16, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29458174/networks-that-link-cytoskeletal-regulators-and-diaphragm-proteins-underpin-filtration-function-in-drosophila-nephrocytes
#2
Simi Muraleedharan, Aksah Sam, Helen Skaer, Maneesha S Inamdar
Insect nephrocytes provide a valuable model for kidney disease, as they are structurally and functionally homologous to mammalian kidney podocytes. They possess an exceptional macromolecular assembly, the nephrocyte diaphragm (ND), which serves as a filtration barrier and helps maintain tissue homeostasis by filtering out wastes and toxic products. However, the elements that maintain nephrocyte architecture and the ND are not understood. We show that Drosophila nephrocytes have a unique cytoplasmic cluster of F-actin, which is maintained by the microtubule cytoskeleton and Rho-GTPases...
February 16, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29458103/zinc-oxide-nanorod-clusters-deposited-seaweed-cellulose-sheet-for-antimicrobial-activity
#3
Priyank L Bhutiya, Mayur S Mahajan, M Abdul Rasheed, Manoj Pandey, S Zaheer Hasan, Nirendra Misra
Seaweed cellulose was isolated from green seaweed Ulva fasciata using a common bleaching agent. Sheet containing porous mesh was prepared from the extracted seaweed crystalline cellulose along with zinc oxide (ZnO) nanorod clusters grown over the sheet by single step hydrothermal method. Seaweed cellulose and zinc oxide nanorod clusters deposited seaweed cellulose sheet was characterized by FT-IR, XRD, TGA, and SEM-EDX. Morphology showed that the diameter of zinc oxide nanorods were around 70 nm. Zinc oxide nanorod clusters deposited on seaweed cellulose sheet gave remarkable antibacterial activity towards gram-positive (Staphylococcus aureus, Bacillus ceresus, Streptococcus thermophilis) and gram-negative (Escherichia coli, Pseudomonas aeruginous) microbes...
February 16, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29458096/identification-of-macrophage-related-candidate-genes-in-lupus-nephritis-using-bioinformatics-analysis
#4
Bingyan Shu, Yi Fang, Weichun He, Junwei Yang, Chunsun Dai
Lupus nephritis (LN) is a chronic autoimmune disorder. Here we try to identify the candidate genes in macrophages related to LN. We performed a systematic search in the Gene Expression Omnibus (GEO) database for microarray in human mononuclear cells and mouse macrophages of LN. The results of clustering and venn analysis of different GEO datasets showed that 8 genes were up-regulated and 2 genes down-regulated in samples from both human and mouse LN. The data from gene network and GO analysis revealed that CD38 and CCL2 were localized in the core of the network...
February 16, 2018: Cellular Signalling
https://www.readbyqxmd.com/read/29458013/ago2-rna-immunoprecipitation-reveals-distinct-mirna-targetomes-of-primary-burkitt-lymphoma-tumors-and-normal-b-cells
#5
Agnieszka Dzikiewicz-Krawczyk, Arjan Diepstra, Bea Rutgers, Gertrud Kortman, Debora de Jong, Jasper Koerts, Marian Bulthuis, Tineke van der Sluis, Annika Seitz, Lydia Visser, Klaas Kok, Joost Kluiver, Anke van den Berg
MicroRNAs (miRNAs) are small noncoding RNAs involved in the posttranscriptional regulation of gene expression. Deregulated miRNA levels have been linked to Burkitt lymphoma (BL) pathogenesis. To date, the number of known pathogenesis-related miRNA-target gene interactions is limited. Here, we determined for the first time the miRNA targetomes of primary BL tumors and normal B cells. AGO2-RNA immunoprecipitation (AGO2-RIP) of two frozen diagnostic BL tissue samples and three CD19+ B-cell samples isolated from routinely removed tonsils revealed distinct miRNA targetomes of BL and normal B cells...
February 16, 2018: American Journal of Pathology
https://www.readbyqxmd.com/read/29457960/phylogenetic-relationships-and-acaricidal-effects-of-beauveria-bassiana-obtained-from-cattle-farm-soils-against-rhipicephalus-microplus
#6
Agustin Fernández-Salas, Miguel Angel Alonso Díaz, Rogelio Alejandro Alonso Morales, Roberto Lezama-Gutierrez, José Antonio Cervantes-Chávez
The objectives of the present study were to isolate Beauveria bassiana strains from cattle farms soils, to analyze the phylogenetic relationships among the isolated fungi strains, and to determine the acaricidal effect of B. bassiana isolates on Rhipicephalus microplus engorged ticks, resistant or susceptible to chemical acaricides. Six strains of Beauveria bassiana were obtained and isolated from cattle farms soils by Galleria bait method in Mexican tropics and the acaricidal effect was assessed against 2 populations of R...
February 19, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/29457904/conflict-in-the-mechanism-and-kinetics-of-the-barrierless-reaction-between-sh-and-no-2-radicals
#7
Ramanpreet Kaur, Vikas
There are some unsettled issues regarding the mechanism and kinetics of an important atmospheric reaction of NO2 radical with the SH radical. The existing mechanism is based on the formation of HSO and NO radicals, both of which can result only along one barrierless channel. However, the detection of NO radical has never been reported though the formation of HSO radical has been followed in some studies to determine the rate constants. The latter are mainly obtained by monitoring the SH decay, but rate constants are reported to be highly conflicting among the existing studies reporting its value ranging from 10-10 to 10-12 cm3 molecule-1 sec-1 ...
February 19, 2018: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29457854/metal-cluster-models-for-heterogeneous-catalysts-a-matrix-isolation-perspective
#8
Hans-Jörg Himmel, Olaf Hübner
Metal cluster models are of high relevance for establishing new mechanistic concepts for heterogeneous catalysis. The high reactivity and particular selectivity of metal clusters is caused by the wealth of low-lying electronically excited states that are often thermally populated. Thereby the metal clusters are flexible with regard to its electronic structure and can adjust their states to be appropriate for the reaction with a particular substrate. The matrix isolation technique is ideally suited for studying excited state reactivity...
February 19, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29457826/prevalence-of-cardiometabolic-risk-factors-among-professional-male-long-distance-bus-drivers-in-lagos-south-west-nigeria-a-cross-sectional-study
#9
Casmir E Amadi, Tim P Grove, Amam C Mbakwem, Obianuju B Ozoh, Oyewole A Kushimo, David A Wood, Michael Akinkunmi
BACKGROUND: Professional drivers are known to be at high risk of cardiovascular disease (CVD). This study was carried out to highlight these risk factors and their predictors among male long-distance professional bus drivers in Lagos, south-west Nigeria, with a view to improving health awareness in this group. METHOD: Socio-demographic data, anthropometric indices, blood pressure, fasting plasma blood glucose levels and lipid and physical activity profiles of 293 drivers were measured...
February 19, 2018: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/29457705/regulation-of-specialised-metabolites-in-actinobacteria-expanding-the-paradigms
#10
Paul A Hoskisson, Lorena T Fernández-Martínez
The increase in availability of actinobacterial whole genome sequences has revealed huge numbers of specialised metabolite biosynthetic gene clusters, encoding a range of bioactive molecules such as antibiotics, antifungals, immunosuppressives and anticancer agents. Yet the majority of these clusters are not expressed under standard laboratory conditions in rich media conditions. Emerging data from studies of specialised metabolite biosynthesis suggest that the diversity of regulatory mechanisms is greater than previously thought and these act at multiple levels, through a range of signals such as nutrient limitation, intercellular signalling and competition with other organisms...
February 19, 2018: Environmental Microbiology Reports
https://www.readbyqxmd.com/read/29457681/analysis-of-rpa190-revealed-multiple-positively-selected-mutations-associated-with-metalaxyl-resistance-in-phytophthora-infestans
#11
Fengping Chen, Qian Zhou, Jing Xi, Dong-Liang Li, Guido Schnabel, Jiasui Zhan
BACKGROUND: Metalaxyl is a phenylamide fungicide, introduced for oomycete management in the 1970s. RPA190 gene has been reported to be associated with metalaxyl resistance, although other genes may be involved in the process as well. The present study assessed the evolutionary association of amino acid (AA) mutations in RPA190 with metalaxyl resistance in Phytophthora infestans. RESULTS: All isolates from Yunnan were resistant to metalaxyl with multiple AA mutations in RPA190...
February 19, 2018: Pest Management Science
https://www.readbyqxmd.com/read/29457613/on-the-photocatalytic-cycle-of-water-splitting-with-small-manganese-oxides-and-the-roles-of-water-clusters-as-direct-sources-of-oxygen-molecules
#12
Kentaro Yamamoto, Kazuo Takatsuka
We theoretically studied the chemical principles behind the photodynamics of water splitting: 2H2 O + 4hν + M → 4H+ + 4e- + O2 + M. To comprehend this simple looking but very complicated reaction, the mechanisms of at least three crucial phenomena, among others, need to be clarified, each of which is supposed to constitute the foundation of chemistry: (i) charge separation (4H+ + 4e- ), (ii) the catalytic cycle for essentially the same reactions to be repeated by each of four photon absorptions with a catalyst M, and (iii) the generation of oxygen molecules of spin triplet...
February 19, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29457602/examination-of-previously-published-data-to-identify-patterns-in-the-social-representation-of-loud-music-in-young-adults-across-countries
#13
Vinaya Manchaiah, Fei Zhao, Susan Oladeji, Pierre Ratinaud
Purpose: The current study was aimed at understanding the patterns in the social representation of loud music reported by young adults in different countries. Materials and Methods: The study included a sample of 534 young adults (18-25 years) from India, Iran, Portugal, United Kingdom, and United States. Participants were recruited using a convince sampling, and data were collected using the free association task. Participants were asked to provide up to five words or phrases that come to mind when thinking about "loud music...
January 2018: Noise & Health
https://www.readbyqxmd.com/read/29457585/training-nurses-in-a-competency-framework-to-support-adults-with-epilepsy-and-intellectual-disability-the-epaid-cluster-rct
#14
Howard Ring, James Howlett, Mark Pennington, Christopher Smith, Marcus Redley, Caroline Murphy, Roxanne Hook, Adam Platt, Nakita Gilbert, Elizabeth Jones, Joanna Kelly, Angela Pullen, Adrian Mander, Cam Donaldson, Simon Rowe, James Wason, Fiona Irvine
BACKGROUND: People with an intellectual (learning) disability (ID) and epilepsy have an increased seizure frequency, higher frequencies of multiple antiepileptic drug (AED) use and side effects, higher treatment costs, higher mortality rates and more behavioural problems than the rest of the population with epilepsy. The introduction of nurse-led care may lead to improvements in outcome for those with an ID and epilepsy; however, this has not been tested in a definitive clinical trial...
February 2018: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/29457544/mesoscale-organization-of-domains-in-the-plasma-membrane-beyond-the-lipid-raft
#15
Stella M Lu, Gregory D Fairn
The plasma membrane is compartmentalized into several distinct regions or domains, which show a broad diversity in both size and lifetime. The segregation of lipids and membrane proteins is thought to be driven by the lipid composition itself, lipid-protein interactions and diffusional barriers. With regards to the lipid composition, the immiscibility of certain classes of lipids underlies the "lipid raft" concept of plasmalemmal compartmentalization. Historically, lipid rafts have been described as cholesterol and (glyco)sphingolipid-rich regions of the plasma membrane that exist as a liquid-ordered phase that are resistant to extraction with non-ionic detergents...
February 18, 2018: Critical Reviews in Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29457540/therapeutic-efficacy-of-cd34-cell-involved-mononuclear-cell-therapy-for-no-option-critical-limb-ischemia-a-meta-analysis-of-randomized-controlled-clinical-trials
#16
Tianyue Pan, Zheng Wei, Yuan Fang, Zhihui Dong, Weiguo Fu
Early-phase clinical trials in patients with critical limb ischemia (CLI) have shown positive results of mononuclear cell therapy. The current meta-analysis investigated whether cluster of differentiation (CD) 34+ mononuclear cell therapy (CD34+ MCT) is effective for no-option CLI. Ten randomized controlled clinical studies of CD34+ MCT for no-option CLI with 479 patients were identified and analyzed for pooled results. Compared to control groups, the CD34+ MCT was associated with lower total amputation (odds ratio (OR): 0...
February 1, 2018: Vascular Medicine
https://www.readbyqxmd.com/read/29457510/hepatocellular-carcinoma-abutting-large-vessels-comparison-of-four-percutaneous-ablation-systems
#17
Amélie Loriaud, Alban Denys, Olivier Seror, Naik Vietti Violi, Antonia Digklia, Rafael Duran, Hervé Trillaud, Arnaud Hocquelet
PURPOSE: To compare overall local tumor progression (OLTP), defined as the failure of primary ablation or local tumor progression, with single applicator monopolar RFA, microwave ablation (MWA), cluster-RFA and multibipolar radiofrequency (mbpRFA) in the treatment of HCC≤5cm abutting large vessels (≥3mm). METHOD AND MATERIALS: This multicenter, retrospective, per-nodule study was performed from 2007 to 2015. The study was approved by the ethics review board, and informed consent was waived...
February 18, 2018: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29457457/programming-hierarchical-self-assembly-of-patchy-particles-into-colloidal-crystals-via-colloidal-molecules
#18
Daniel Morphew, James Shaw, Christopher Avins, Dwaipayan Chakrabarti
Colloidal self-assembly is a promising bottom-up route to a wide variety of three-dimensional structures, from clusters to crystals. Programming hierarchical self-assembly of colloidal building blocks, which can give rise to structures ordered at multiple levels to rival biological complexity, poses a multiscale design problem. Here we explore a generic design principle that exploits a hierarchy of interaction strengths and employ this design principle in computer simulations to demonstrate the hierarchical self-assembly of triblock patchy colloidal particles into two distinct colloidal crystals...
February 19, 2018: ACS Nano
https://www.readbyqxmd.com/read/29457368/emergence-of-two-novel-sublineages-ind2001bd1-and-ind2001bd2-of-foot-and-mouth-disease-virus-serotype-o-in-bangladesh
#19
M A Siddique, M R Ali, A S M R U Alam, H Ullah, A Rahman, R P Chakrabarty, M A Amin, S A Hoque, S P Nandi, M Sultana, M A Hossain
Foot-and-mouth disease (FMD) is endemic in Bangladesh, and the implementation of a control programme for this disease is at an early stage, according to the FAO- and OIE-proposed Progressive Control Pathway for FMD (PCP-FMD) Roadmap. To develop an effective control programme, understanding of foot-and-mouth disease virus (FMDV) serotypes, even subtypes within the serotypes is essential. The present investigation aims at viral VP1 coding region sequence-based analysis of FMD samples collected from 34 FMD outbreaks during 2012-2016 in Bangladesh...
February 18, 2018: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/29457346/dual-hole-excitons-activated-photoelectrolysis-in-neutral-solution
#20
Sung-Fu Hung, Zhi-Zhong Chen, Chun-Chih Chang, Chia-Shuo Hsu, Ming-Kang Tsai, Chia-Cheng Kang, Hao Ming Chen
II-VI semiconductors exhibit unique behaviors that can generate dual-holes ("heavy and light"), but the application in photocatalysis is still missing. Herein, an empirical utilization of light/heavy holes in a hybrid metal cluster-2D semiconductor nanoplatelets is reported. This hybrid material can boost the hole-transfer at the surface and suppress the recombination. Different roles are enacted by light-holes and heavy-holes, in which the light-holes with higher energy and mobility can facilitate the slow kinetics of water oxidation and further reduce the onset voltage, while the massive heavy-holes can increase the resulting photocurrent by about five times, achieving a photocurrent of 2 mA cm-2 at 1...
February 19, 2018: Small
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