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Elucidation of the thromboregulatory role of CD39/ectoapyrase in the ischemic brain

Pinsky, David J.; Broekman, M. Johan; Peschon, Jacques J.; Stocking, Kim L.; Fujita, Tomoyuki; Ramasamy, Ravichandran; Connolly, E. Sander; Huang, Judy; Kiss, Szilard; Zhang, Yuan; Choudhri, Tanvir F.; McTaggart, Ryan A.; Liao, Hui; Drosopoulos, Joan H.F.
Fonte: American Society for Clinical Investigation Publicador: American Society for Clinical Investigation
Tipo: Artigo de Revista Científica
Publicado em 15/04/2002 EN
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Endothelial CD39 metabolizes ADP released from activated platelets. Recombinant soluble human CD39 (solCD39) potently inhibited ex vivo platelet aggregation in response to ADP and reduced cerebral infarct volumes in mice following transient middle cerebral artery occlusion, even when given 3 hours after stroke. Postischemic platelet and fibrin deposition were decreased and perfusion increased without increasing intracerebral hemorrhage. In contrast, aspirin did not increase postischemic blood flow or reduce infarction volume, but did increase intracerebral hemorrhage. Mice lacking the enzymatically active extracellular portion of the CD39 molecule were generated by replacement of exons 4–6 (apyrase-conserved regions 2–4) with a PGKneo cassette. Although CD39 mRNA 3′ of the neomycin cassette insertion site was detected, brains from these mice lacked both apyrase activity and CD39 immunoreactivity. Although their baseline phenotype, hematological profiles, and bleeding times were normal, cd39–/– mice exhibited increased cerebral infarct volumes and reduced postischemic perfusion. solCD39 reconstituted these mice, restoring postischemic cerebral perfusion and rescuing them from cerebral injury. These data demonstrate that CD39 exerts a protective thromboregulatory function in stroke.

Fungal Planet description sheets: 107–127

Crous, P.W.; Summerell, B.A.; Shivas, R.G.; Burgess, T.I.; Decock, C.A.; Dreyer, L.L.; Granke, L.L.; Guest, D.I.; Hardy, G.E.St.J.; Hausbeck, M.K.; Hüberli, D.; Jung, T.; Koukol, O.; Lennox, C.L.; Liew, E.C.Y.; Lombard, L.; McTaggart, A.R.; Pryke, J.S.;
Fonte: Nationaal Herbarium Nederland & Centraallbureau voor Schimmelcultures Publicador: Nationaal Herbarium Nederland & Centraallbureau voor Schimmelcultures
Tipo: Artigo de Revista Científica
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Novel species of microfungi described in the present study include the following from Australia: Phytophthora amnicola from still water, Gnomoniopsis smithogilvyi from Castanea sp., Pseudoplagiostoma corymbiae from Corymbia sp., Diaporthe eucalyptorum from Eucalyptus sp., Sporisorium andrewmitchellii from Enneapogon aff. lindleyanus, Myrmecridium banksiae from Banksia, and Pilidiella wangiensis from Eucalyptus sp. Several species are also described from South Africa, namely: Gondwanamyces wingfieldii from Protea caffra, Montagnula aloes from Aloe sp., Diaporthe canthii from Canthium inerne, Phyllosticta ericarum from Erica gracilis, Coleophoma proteae from Protea caffra, Toxicocladosporium strelitziae from Strelitzia reginae, and Devriesia agapanthi from Agapanthus africanus. Other species include Phytophthora asparagi from Asparagus officinalis (USA), and Diaporthe passiflorae from Passiflora edulis (South America). Furthermore, novel genera of coelomycetes include Chrysocrypta corymbiae from Corymbia sp. (Australia), Trinosporium guianense, isolated as a contaminant (French Guiana), and Xenosonderhenia syzygii, from Syzygium cordatum (South Africa). Pseudopenidiella piceae from Picea abies (Czech Republic), and Phaeocercospora colophospermi from Colophospermum mopane (South Africa) represent novel genera of hyphomycetes. Morphological and culture characteristics along with ITS DNA barcodes are provided for all taxa.

Dietary patterns derived with multiple methods from food diaries and breast cancer risk in the UK Dietary Cohort Consortium

Pot, Gerda K; Stephen, Alison M; Dahm, Christina C; Key, Timothy J; Cairns, Benjamin J; Burley, Victoria J; Cade, Janet E; Greenwood, Darren C; Keogh, Ruth H; Bhaniani, Amit; McTaggart, Alison; Lentjes, Marleen AH; Mishra, Gita; Brunner, Eric J; Khaw, Kay
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
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Saprophytic and pathogenic fungi in the Ceratocystidaceae differ in their ability to metabolize plant-derived sucrose

Van der Nest, M. A.; Steenkamp, E. T.; McTaggart, A. R.; Trollip, C.; Godlonton, T.; Sauerman, E.; Roodt, D.; Naidoo, K.; Coetzee, M. P. A.; Wilken, P. M.; Wingfield, M. J.; Wingfield, B. D.
Fonte: BioMed Central Publicador: BioMed Central
Tipo: Artigo de Revista Científica
Publicado em 07/12/2015 EN
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Fonte: Ideas y Valores Publicador: Ideas y Valores
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2014 ES
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Se busca establecer una relación, no satisfactoriamente explorada, entre la fenomenologia merleaupontiana del tiempo y un problema central de la "theory of time" analítica, la paradoja de McTaggart. Al clarificar, en polémica con Priest (1998), el autêntico sentido del "subjetivismo" merleaupontiano con respecto al tiempo, se senala cómo establecer una confluencia entre el acercamiento fenomenológico y las tesis desarrolladas por Michael Dummett como respuesta a la mencionada paradoja. Con los senalamientos de Dummett y la interpretación de Bimbenet acerca del "perspectivismo" merleaupontiano, se intenta una solución "situacional" a la paradoja.