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https://www.readbyqxmd.com/read/28730412/gns4-a-novel-allele-of-dwarf11-regulates-grain-number-and-grain-size-in-a-high-yield-rice-variety
#1
Yong Zhou, Yajun Tao, Jinyan Zhu, Jun Miao, Jun Liu, Yanhua Liu, Chuandeng Yi, Zefeng Yang, Zhiyun Gong, Guohua Liang
BACKGROUND: Rice plays an extremely important role in food safety because it feeds more than half of the world's population. Rice grain yield depends on biomass and the harvest index. An important strategy to break through the rice grain yield ceiling is to increase the biological yield. Therefore, genes associated with organ size are important targets for rice breeding. RESULTS: We characterized a rice mutant gns4 (grain number and size on chromosome 4) with reduced organ size, fewer grains per panicle, and smaller grains compared with those of WT...
December 2017: Rice
https://www.readbyqxmd.com/read/28718794/brs1-function-in-facilitating-lateral-root-emergence-in-arabidopsis
#2
Qian Deng, Xue Wang, Dongzhi Zhang, Xiaoming Wang, Cuizhu Feng, Shengbao Xu
The BRS1 (BRI1 Suppressor 1) gene encodes a serine carboxypeptidase that plays a critical role in the brassinosteroid signaling pathway. However, its specific biological function remains unclear. In this study, the developmental role of BRS1 was investigated in Arabidopsis thaliana. We found that overexpressing BRS1 resulted in significantly more lateral roots in different Arabidopsis ecotypes (WS2 and Col-0) and in brassinosteroid mutants (bri1-5 and det2-28). Further research showed that BRS1 facilitates the process whereby lateral root primordia break through the endodermis, cortex, and epidermis...
July 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28712102/precision-medicine-in-metastatic-colorectal-cancer-relevant-carcinogenic-pathways-and-targets-part-2-approaches-beyond-first-line-therapy-and-novel-biologic-agents-under-investigation
#3
REVIEW
Benjamin A Weinberg, Marion L Hartley, Mohamed E Salem
A frequent quandary for oncologists is the selection of chemotherapy and biologic therapy for patients with metastatic colorectal cancer in second-line and higher treatment settings. While not approved by the US Food and Drug Administration (FDA) in the first-line setting, the vascular endothelial growth factor (VEGF)-targeting agents ziv-aflibercept and ramucirumab are appropriate treatment options in the second-line setting, as is continuation of first-line bevacizumab. Tumor RAS mutational status is helpful to determine which patients may benefit from epidermal growth factor receptor (EGFR)-directed therapies, and other novel biomarkers (BRAF, HER2, and mismatch repair deficiency) allow us to select patients who may benefit from biologic therapies that are FDA-approved for other malignancies...
July 15, 2017: Oncology (Williston Park, NY)
https://www.readbyqxmd.com/read/28685959/targeting-cholesterol-transport-in-circulating-melanoma-cells-to-inhibit-metastasis
#4
Yu-Chi Chen, Raghavendra Gowda, Raymond K Newswanger, Patrick Leibich, Barry Fell, Gerson Rosenberg, Gavin P Robertson
Despite recent break throughs in targeted- and immune-based therapies, rapid development of drug resistance remains a hurdle for the long-term treatment of melanoma patients. Targeting metastatically spreading circulating tumor cells (CTCs) may provide an additional approach to manage melanoma. This study investigates whether targeting cholesterol transport in melanoma CTCs can retard metastasis development. Nanolipolee-007, the liposomal form of leelamine, reduced melanoma metastasis in both a novel in vitro flow system mimicking the circulating system and in experimental as well as spontaneous animal metastasis models, irrespective of the BRAF mutational status of the CTCs...
July 7, 2017: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/28651204/iron-tannin-framework-complex-modified-pes-ultrafiltration-membranes-with-enhanced-filtration-performance-and-fouling-resistance
#5
Xiaofeng Fang, Jiansheng Li, Xin Li, Shunlong Pan, Xiuyun Sun, Jinyou Shen, Weiqing Han, Lianjun Wang, Bart Van der Bruggen
In this work, an iron-tannin-framework (ITF) complex was introduced to a poly (ether sulfone) (PES) casting solution as a hydrophilic additive to fabricate ITF/PES ultrafiltration (UF) membranes via non-solvent-induced phase separation (NIPS). The structure and performance of the PES membranes with ITF concentrations ranging from 0 to 0.9wt.% were systematically investigated by scanning electron microscopy, water contact angle, permeability, protein rejection and fouling resistance measurements. The results indicate that the pore structure and surface properties of PES UF membranes can be regulated by incorporating the ITF complex...
June 20, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28644509/comparative-transcriptomic-analysis-of-two-important-life-stages-of-angiostrongylus-cantonensis-fifth-stage-larvae-and-female-adults
#6
Liang Yu, Binbin Cao, Ying Long, Meks Tukayo, Chonglv Feng, Wenzhen Fang, Damin Luo
The mechanisms involved in the fast growth of Angiostrongylus cantonensis from fifth-stage larvae (L5) to female adults and how L5 breaks through the blood-brain barrier in a permissive host remain unclear. In this work, we compared the transcriptomes of these two life stages to identify the main factors involved in the rapid growth and transition to adulthood. RNA samples from the two stages were sequenced and assembled de novo. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway analyses of 1,346 differentially expressed genes between L5 and female adults was then undertaken...
April 2017: Genetics and Molecular Biology
https://www.readbyqxmd.com/read/28639361/experiences-and-needs-of-relatives-of-people-with-dementia-in-acute-hospitals-a-meta-synthesis-of-qualitative-studies
#7
REVIEW
Melanie Burgstaller, Hanna Mayer, Cornel Schiess, Susi Saxer
AIMS AND OBJECTIVES: The purpose of this meta-synthesis was to present an in-depth analysis of existing qualitative literature concerning experiences and needs of the relatives of patients with dementia in hospitals. BACKGROUND: Relatives are an important resource for the care of patients with dementia in hospitals. They provide necessary information about the patient and can support the patient's care. Simultaneously, they are themselves vulnerable, having specific needs and experiences...
June 21, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28630077/what-are-the-primary-limitations-in-b-cell-affinity-maturation-and-how-much-affinity-maturation-can-we-drive-with-vaccination-breaking-through-immunity-s-glass-ceiling
#8
Garnett Kelsoe, Barton F Haynes
A key goal of HIV-1 vaccine development is the induction of broadly neutralizing antibodies (bnAbs) targeted to the vulnerable regions of the HIV envelope. BnAbs develop over time in ∼50% of HIV-1-infected individuals. However, to date, no vaccines have induced bnAbs and few or none of these vaccine-elicited HIV-1 antibodies carry the high frequencies of V(D)J mutations characteristic of bnAbs. Do the high frequencies of mutations characteristic of naturally induced bnAbs represent a fundamental barrier to the induction of bnAbs by vaccines? Recent studies suggest that high frequencies of V(D)J mutations can be achieved by serial vaccination strategies...
June 19, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28629208/breaking-through-the-multi-mesa-channel-width-limited-of-normally-off-gan-hemts-through-modulation-of-the-via-hole-length
#9
Cheng-Yen Chien, Wen-Hsin Wu, Yao-Hong You, Jun-Huei Lin, Chia-Yu Lee, Wen-Ching Hsu, Chieh-Hsiung Kuan, Ray-Ming Lin
We present new normally off GaN high-electron-mobility transistors (HEMTs) that overcome the typical limitations in multi-mesa-channel (MMC) width through modulation of the via-hole-length to regulate the charge neutrality screen effect. We have prepared enhancement-mode (E-mode) GaN HEMTs having widths of up to 300 nm, based on an enhanced surface pinning effect. E-mode GaN HEMTs having MMC structures and widths as well as via-hole-lengths of 100 nm/2 μm and 300 nm/6 μm, respectively, exhibited positive threshold voltages (V th) of 0...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28625156/heteroduplex-cleavage-assay-for-screening-of-probable-zygosities-resulting-from-crispr-mutations-in-diploid-single-cell-lines
#10
Kyle D Luttgeharm, Kit-Sum Wong, Steve Siembieda
The most common gene editing methods, such as CRISPR, involve random repair of an induced double-stranded DNA break through the non-homologous end joining (NHEJ) repair pathway, resulting in small insertions/deletions. In diploid cells, these mutations can take on one of three zygosities: monoallelic, diallelic heterozygous, or diallelic homozygous. While many advances have been made in CRISPR delivery systems and gene editing efficiency, little work has been done to streamline detection of gene editing events...
June 1, 2017: BioTechniques
https://www.readbyqxmd.com/read/28623092/ctip-ctp1-sae2-molecular-form-fit-for-function
#11
REVIEW
Sara N Andres, R Scott Williams
Vertebrate CtIP, and its fission yeast (Ctp1), budding yeast (Sae2) and plant (Com1) orthologs have emerged as key regulatory molecules in cellular responses to DNA double strand breaks (DSBs). By modulating the nucleolytic 5'-3' resection activity of the Mre11/Rad50/Nbs1 (MRN) DSB repair processing and signaling complex, CtIP/Ctp1/Sae2/Com1 is integral to the channeling of DNA double strand breaks through DSB repair by homologous recombination (HR). Nearly two decades since its discovery, emerging new data are defining the molecular underpinnings for CtIP DSB repair regulatory activities...
June 9, 2017: DNA Repair
https://www.readbyqxmd.com/read/28582977/sorption-of-poly-and-perfluoroalkyl-substances-pfass-relevant-to-aqueous-film-forming-foam-afff-impacted-groundwater-by-biochars-and-activated-carbon
#12
Xin Xiao, Bridget A Ulrich, Baoliang Chen, Christopher P Higgins
Despite growing concerns about human exposure to perfluorooctanoate (PFOA) and perfluorooctanesulfonate (PFOS), other poly- and perfluoroalkyl substances (PFASs) derived from aqueous film-forming foams (AFFFs) have garnered little attention. While these other PFASs may also be present in AFFF-impacted drinking water, their removal by conventional drinking-water treatment is poorly understood. This study compared the removal of 30 PFASs, including 13 recently discovered PFASs, from an AFFF-impacted drinking water using carbonaceous sorbents (i...
June 6, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28531371/wing-1-of-protein-hop2-is-as-important-as-helix-3-in-dna-binding-by-md-simulation
#13
Hem Moktan, Donghua H Zhou
The repair of programmed DNA double-strand breaks through recombination is required for proper association and disjunction of the meiotic homologous chromosomes. Meiosis-specific protein HOP2 plays essential roles in recombination by promoting recombinase activities. The N-terminal domain of HOP2 interacts with DNA through helix 3 (H3) and wing 1 (W1). Mutations in wing 1 (Y65A/K67A/Q68A) slightly weakened the binding but mutations in helices 2 and 3 (Q30A/K44A/K49A) nearly abolished the binding. To better understand such differential effects at atomic level, molecular dynamics simulations were employed...
June 8, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28514120/mouth-development
#14
REVIEW
Justin Chen, Laura A Jacox, Francesca Saldanha, Hazel Sive
A mouth is present in all animals, and comprises an opening from the outside into the oral cavity and the beginnings of the digestive tract to allow eating. This review focuses on the earliest steps in mouth formation. In the first half, we conclude that the mouth arose once during evolution. In all animals, the mouth forms from ectoderm and endoderm. A direct association of oral ectoderm and digestive endoderm is present even in triploblastic animals, and in chordates, this region is known as the extreme anterior domain (EAD)...
May 17, 2017: Wiley Interdisciplinary Reviews. Developmental Biology
https://www.readbyqxmd.com/read/28504628/-the-current-global-tuberculosis-state
#15
Christian Wejse, Troels Lillebæk, Ole Kirk, Pernille Ravn, Isik Somuncu Johansen, Åse Bengård Andersen
Despite an increase in the total number of tuberculosis (TB) patients globally, positive trends in reduction of prevalence and mortality are observed. However, high numbers of drug-resistant cases are threatening this trend. Multidrug-resistant and extensively resistant cases constitute an increasing challenge in many parts of the world also within the European region - especially in former Sovjet Republic nations. Point-of-care test systems potentially replacing microscopy and urine antigen detection systems are currently launched in many TB-high endemic countries improving TB detection rates...
May 15, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28451178/janus-second-order-nonlinear-optical-dendrimers-their-controllable-molecular-topology-and-corresponding-largely-enhanced-performance
#16
Runli Tang, Shengmin Zhou, Ziyao Cheng, Gui Yu, Qian Peng, Huiyi Zeng, Guocong Guo, Qianqian Li, Zhen Li
A new type of Janus dendrimers, consisting of two different side dendrons with the dipole orientation of the second-order nonlinear optical (NLO) chromophore moieties partially in a non-centrosymmetric direction, was intelligently designed and synthesized in order to enhance the macroscopic NLO performance and break through the limitation of NLO efficiency in the current molecular topological structure of azo chromophore-based polymers. This kind of Janus dendritic structure was constructed by the combination of convergent and divergent methods, with the utilization of a powerful "click chemistry reaction"...
January 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28448229/breaking-through-the-glass-ceiling-consumers-in-mental-health-organisations-hierarchies
#17
Brett Scholz, Julia Bocking, Brenda Happell
Contemporary mental health policies call for consumers to be engaged in all levels of mental health service planning, implementation, and delivery. Critical approaches to traditional healthcare hierarchies can effectively challenge barriers to better engagement with consumers in mental health organisations. This qualitative exploratory study analyses how particular strategies for consumer leadership facilitate or hinder relationships between consumers and mental health services, and how these strategies influence hierarchical structures...
May 2017: Issues in Mental Health Nursing
https://www.readbyqxmd.com/read/28442438/dorsal-fin-development-in-flounder-paralichthys-olivaceus-bud-formation-and-its-cellular-origin
#18
Jie Chen, Xiaoyu Liu, Xiaohua Yao, Fei Gao, Baolong Bao
The development of the median fin has not been investigated extensively in teleosts, although in other fishes it has been proposed that it involves the same genetic programs operating in the paired appendages. Adult median fins develop from the larval bud; therefore an investigation of fin bud formation and its cellular origin is essential to understanding the maturation mechanisms. In Paralichthys olivaceus, skeletogenesis proceeds from an anterior to posterior direction providing a good opportunity to study the formation of dorsal fin bud...
April 22, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/28438966/mediation-of-movement-induced-breakthrough-cancer-pain-by-ib4-binding-nociceptors-in-rats
#19
Joshua Havelin, Ian Imbert, Devki Sukhtankar, Bethany Remeniuk, Ian Pelletier, Jonathan Gentry, Alec Okun, Timothy Tiutan, Frank Porreca, Tamara E King
Cancer-induced bone pain is characterized by moderate to severe ongoing pain that commonly requires the use of opiates. Even when ongoing pain is well controlled, patients can suffer breakthrough pain (BTP), episodic severe pain that "breaks through" the medication. We developed a novel model of cancer-induced BTP using female rats with mammary adenocarcinoma cells sealed within the tibia. We demonstrated previously that rats with bone cancer learn to prefer a context paired with saphenous nerve block to elicit pain relief (i...
May 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28429768/reassembling-embryos-in-vitro-from-component-stem-cells
#20
Caroline Kubaczka, George Q Daley
Researchers at the University of Cambridge, UK have succeeded in reconstructing mouse embryos by combining pluripotent embryonic and multipotent trophoblast stem cells in a 3D scaffold; the study from the laboratory of Professor Zernicka-Goetz, recently published in Science, provides a break-through tool to probe early mammalian development outside the uterus. Achieving a similar feat with human cells might necessitate reconsideration of the 14-day rule as a limitation of such research.
April 21, 2017: Cell Research
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