8 research outputs found

    Dimethyl fumarate in patients admitted to hospital with COVID-19 (RECOVERY): a randomised, controlled, open-label, platform trial

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    Dimethyl fumarate (DMF) inhibits inflammasome-mediated inflammation and has been proposed as a treatment for patients hospitalised with COVID-19. This randomised, controlled, open-label platform trial (Randomised Evaluation of COVID-19 Therapy [RECOVERY]), is assessing multiple treatments in patients hospitalised for COVID-19 (NCT04381936, ISRCTN50189673). In this assessment of DMF performed at 27 UK hospitals, adults were randomly allocated (1:1) to either usual standard of care alone or usual standard of care plus DMF. The primary outcome was clinical status on day 5 measured on a seven-point ordinal scale. Secondary outcomes were time to sustained improvement in clinical status, time to discharge, day 5 peripheral blood oxygenation, day 5 C-reactive protein, and improvement in day 10 clinical status. Between 2 March 2021 and 18 November 2021, 713 patients were enroled in the DMF evaluation, of whom 356 were randomly allocated to receive usual care plus DMF, and 357 to usual care alone. 95% of patients received corticosteroids as part of routine care. There was no evidence of a beneficial effect of DMF on clinical status at day 5 (common odds ratio of unfavourable outcome 1.12; 95% CI 0.86-1.47; p = 0.40). There was no significant effect of DMF on any secondary outcome

    Dimethyl fumarate in patients admitted to hospital with COVID-19 (RECOVERY): a randomised, controlled, open-label, platform trial

    Get PDF
    Dimethyl fumarate (DMF) inhibits inflammasome-mediated inflammation and has been proposed as a treatment for patients hospitalised with COVID-19. This randomised, controlled, open-label platform trial (Randomised Evaluation of COVID-19 Therapy [RECOVERY]), is assessing multiple treatments in patients hospitalised for COVID-19 (NCT04381936, ISRCTN50189673). In this assessment of DMF performed at 27 UK hospitals, adults were randomly allocated (1:1) to either usual standard of care alone or usual standard of care plus DMF. The primary outcome was clinical status on day 5 measured on a seven-point ordinal scale. Secondary outcomes were time to sustained improvement in clinical status, time to discharge, day 5 peripheral blood oxygenation, day 5 C-reactive protein, and improvement in day 10 clinical status. Between 2 March 2021 and 18 November 2021, 713 patients were enroled in the DMF evaluation, of whom 356 were randomly allocated to receive usual care plus DMF, and 357 to usual care alone. 95% of patients received corticosteroids as part of routine care. There was no evidence of a beneficial effect of DMF on clinical status at day 5 (common odds ratio of unfavourable outcome 1.12; 95% CI 0.86-1.47; p = 0.40). There was no significant effect of DMF on any secondary outcome

    A complex biogeographic history of diversification in Neotropical lancehead pitvipers (Serpentes, Viperidae)

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    Based on literature, we had predicted that the diversification within the Neotropical snake genus Bothrops occurred along a latitudinal gradient from north to south, with diversification into unoccupied niches through ecological opportunity, not correlated with geoclimatic events. Using a dated phylogeny and estimating likelihoods of ancestral states at cladogenesis events, we reconstructed ancestral areas and assessed major events of the diversification of Bothrops clades, and we also discuss systematic implications for this group. Based on the phylogeny we produced, B. lojanus was not considered as part of the genus Bothrops since the results recovered this species nested within the Bothrocophias clade. We infer that the diversification of the Miocene B. pictus and B. alternatus clades may be related to the uplift of the western slopes of the Andes and the Argentinian Patagonian Andes, respectively. The Pliocene B. taeniatus and B. osbornei clades may be related to the uplift of the eastern and northern Andes, respectively. The Plio-Pleistocene B. neuwiedi clade may be related to the habitat transitions from a warmer and forested environment to a cooler and open landscape; the B. jararaca (i.e., island endemic species) and B. lanceolatus clades to over-water dispersal with island speciation; and B. atrox clade to the appearance of the Panamanian land bridge. We found a multitemporal and multidirectional history of diversification may be correlated with geoclimatic and dispersalist events. We argue that the vacant niche hypothesis by itself does not explain Bothrops diversification.Fil: Hamdan, Breno. Universidade Federal do Estado do Rio de Janeiro; BrasilFil: Guedes, ThaĂ­s B.. Universidade Federal Do Maranhao.; BrasilFil: Carrasco, Paola Andrea. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de Diversidad y EcologĂ­a Animal. Universidad Nacional de CĂłrdoba. Facultad de Ciencias Exactas FĂ­sicas y Naturales. Instituto de Diversidad y EcologĂ­a Animal; ArgentinaFil: Melville, Janes. Museum Victoria. Sciences Department; Australi

    Intrigues and Intricacies of the Biosynthetic Pathways for the Enzymatic Quinocofactors: PQQ, TTQ, CTQ, TPQ, and LTQ

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    A primary focus to the variety of biosynthetic pathways for the production of quinocofactors is reviewed. Proteins containing a unique pair of heme iron enzymes are present in the pathways for the production of TTQ and CTQ. A nonheme iron monooxygenase may play a role in PQQ production and copper ions are essential for the production of TPQ and LTQ. In searching for common features among the pathways, in all cases the initial hydroxylation of either a Tyr or Trp appears necessary. By nature of the structure of Trp, a second ring hydroxylation must occur in some manner during the production of TTQ and CTQ. These hydroxylations are followed by the addition of either a hydroxide ion (TPQ) or a second amino acid side chain (PQQ, TTQ, CTQ, and LTQ), to initiate the final segment of cofactor production. The quinone-dependent enzymes are, in fact, more restrictive than flavin-dependent systems, either acting exclusively on primary amine substrates (TTQ, CTQ, TPQ, and LTQ) or a select number of primary alcohols
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