7,581 research outputs found
Rescue with an anti-inflammatory peptide of chickens infected H5N1 avian flu
Chickens suffering from avian flu caused by H5N1 influenza virus are destined to die within 2 days due to a systemic inflammatory response. Since HVJ infection (1,2) and influenza virus infection (3,4) cause infected cells to activate homologous serum complement, the systemic inflammatory response elicited could be attributed to the unlimited generation of C5a anaphylatoxin of the complement system, which is a causative peptide of serious inflammation. In monkeys inoculated with a lethal dose of LPS (4 mg/kg body weight), inhibition of C5a by an inhibitory peptide termed AcPepA (5) rescued these animals from serious septic shock which would have resulted in death within a day (6). Therefore, we tested whether AcPepA could also have a beneficial effect on chickens with bird flu. On another front, enhanced production of endothelin-1 (ET-1) and the activation of mast cells (MCs) have been implicated in granulocyte sequestration (7). An endothelin receptor derived antisense homology box peptide (8) designated ETR-P1/fl was shown to antagonize endothelin A receptor (ET-A receptor) (9) and reduce such inflammatory responses as endotoxin-shock (10) and hemorrhagic shock (11), thereby suppressing histamine release in the circulation (12). Thus, we also administered ETR-P1/fl to bird flu chickens expecting suppression of a systemic inflammatory response
Waves of genomic hitchhikers shed light on the evolution of gamebirds (Aves: Galliformes) : research article
Background The phylogenetic tree of Galliformes (gamebirds, including megapodes, currassows, guinea fowl, New and Old World quails, chicken, pheasants, grouse, and turkeys) has been considerably remodeled over the last decades as new data and analytical methods became available. Analyzing presence/absence patterns of retroposed elements avoids the problems of homoplastic characters inherent in other methodologies. In gamebirds, chicken repeats 1 (CR1) are the most prevalent retroposed elements, but little is known about the activity of their various subtypes over time. Ascertaining the fixation patterns of CR1 elements would help unravel the phylogeny of gamebirds and other poorly resolved avian clades. Results We analyzed 1,978 nested CR1 elements and developed a multidimensional approach taking advantage of their transposition in transposition character (TinT) to characterize the fixation patterns of all 22 known chicken CR1 subtypes. The presence/absence patterns of those elements that were active at different periods of gamebird evolution provided evidence for a clade (Cracidae + (Numididae + (Odontophoridae + Phasianidae))) not including Megapodiidae; and for Rollulus as the sister taxon of the other analyzed Phasianidae. Genomic trace sequences of the turkey genome further demonstrated that the endangered African Congo Peafowl (Afropavo congensis) is the sister taxon of the Asian Peafowl (Pavo), rejecting other predominantly morphology-based groupings, and that phasianids are monophyletic, including the sister taxa Tetraoninae and Meleagridinae. Conclusions The TinT information concerning relative fixation times of CR1 subtypes enabled us to efficiently investigate gamebird phylogeny and to reconstruct an unambiguous tree topology. This method should provide a useful tool for investigations in other taxonomic groups as well
Cost Allocation in Water Resources Development - A Case Study of Sweden
Methods for allocating the joint costs of a water supply facility among the different users are systematically compared using basic principles from game theory and fair division. The analysis shows that some of the more widely used methods, including the separable costs-remaining-benefits methods, seem less satisfactory than a lesser-known game theory method based on the idea of the "core". The methods are applied to the cost sharing problem of a group of municipalities developing a joint municipal water supply
Higgs Working Group Report of the Snowmass 2013 Community Planning Study
This report summarizes the work of the Energy Frontier Higgs Boson working
group of the 2013 Community Summer Study (Snowmass). We identify the key
elements of a precision Higgs physics program and document the physics
potential of future experimental facilities as elucidated during the Snowmass
study. We study Higgs couplings to gauge boson and fermion pairs, double Higgs
production for the Higgs self-coupling, its quantum numbers and -mixing in
Higgs couplings, the Higgs mass and total width, and prospects for direct
searches for additional Higgs bosons in extensions of the Standard Model. Our
report includes projections of measurement capabilities from detailed studies
of the Compact Linear Collider (CLIC), a Gamma-Gamma Collider, the
International Linear Collider (ILC), the Large Hadron Collider High-Luminosity
Upgrade (HL-LHC), Very Large Hadron Colliders up to 100 TeV (VLHC), a Muon
Collider, and a Triple-Large Electron Positron Collider (TLEP)
A distinct function of the retinoblastoma protein in the control of lipid composition identified by lipidomic profiling
13301甲第4598号博士(医学)金沢大学博士論文本文Full 以下に掲載:Oncogenesis 6(6) pp.e350-e362 2017. Nature Publishing Group. 共著者:Muranaka H, Hayashi A, Minami K, Kitajima S, Kohno S, Nishimoto Y, Nagatani N, Suzuki M, Kulathunga N, Sasaki N, Okada N, Matsuzaka T, Shimano H, Tada H, Takahashi
Dark matter wants Linear Collider
One of the main purposes of physics at the International Linear Collider (ILC) is to study the property of dark matter such as its mass, spin, quantum numbers, and interactions with particles of the standard model. We discuss how the property can or cannot be investigated at the ILC using two typical cases of dark matter scenario: i) most of new particles predicted in physics beyond the standard model are heavy and only dark matter is accessible at the ILC, and ii) not only dark matter but also other new particles are accessible at the ILC. We find that, as can be easily imagined, dark matter can be detected without any difficulties in the latter case. In the former case, it is still possible to detect dark matter when the mass of dark matter is less than a half mass of the higgs boson
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