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Gabay C, Tournour M, Bonet M, Giorlando A, Boyeras I, Thompson L, Castro M. P2.15-02 Gender-Associated Differences in Patients with Lung Cancer Treated at an Argentinean University Hospital in the Last 10 Years. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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52
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Antunes B, Camões S, Castro M, Oliveira N, Miranda J. The cytotoxicity of doxorubicin in human mammary cells is modulated by the conditioned medium of mesenchymal stem cells. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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53
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Gabay C, Rusjan N, Martin K, Bonet M, Rojas Bilbao E, Castro M. P1.15-08 Implementation and Feasibility of the Assessment of EGFR Mutation in NSCLC Using Liquid Biopsy at an Argentinean University Hospital. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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54
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Castro M, Chigo Anota E. Growth of iron clusters on octahedral B12N12 cage: a time-dependent-DFT analysis. Struct Chem 2018. [DOI: 10.1007/s11224-018-1193-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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55
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Wainsztein V, Recondo G, Denninghoff V, Cuello M, Greco M, De La Vega M, Galanternik F, Rojas Bilbao E, Avagnina A, Castro M, Recondo G. P20 Molecular Characterization of Non–Small Cell Lung Cancer (NSCLC) Patients by Next Generation Sequencing: Preliminary Data. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.07.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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56
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Toledo D, Piovacari S, Castro M, Horie L, Correa F, Ceniccola G, Gonçalves R, Gonzalez M, Correia M. Say no to hospital malnutrition: A Brazilian society national campaign. Clin Nutr 2018. [DOI: 10.1016/j.clnu.2018.06.1883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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57
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Redondo-Cubero A, Lorenz K, Palomares FJ, Muñoz A, Castro M, Muñoz-García J, Cuerno R, Vázquez L. Concurrent segregation and erosion effects in medium-energy iron beam patterning of silicon surfaces. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:274001. [PMID: 29794326 DOI: 10.1088/1361-648x/aac79a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We have bombarded crystalline silicon targets with a 40 keV Fe+ ion beam at different incidence angles. The resulting surfaces have been characterized by atomic force, current-sensing and magnetic force microscopies, scanning electron microscopy, and x-ray photoelectron spectroscopy. We have found that there is a threshold angle smaller than 40° for the formation of ripple patterns, which is definitely lower than those frequently reported for noble gas ion beams. We compare our observations with estimates of the value of the critical angle and of additional basic properties of the patterning process, which are based on a continuum model whose parameters are obtained from binary collision simulations. We have further studied experimentally the ripple structures and measured how the surface slopes change with the ion incidence angle. We explore in particular detail the fluence dependence of the pattern for an incidence angle value (40°) close to the threshold. Initially, rimmed holes appear randomly scattered on the surface, which evolve into large, bug-like structures. Further increasing the ion fluence induces a smooth, rippled background morphology. By means of microscopy techniques, a correlation between the morphology of these structures and their metal content can be unambiguously established.
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58
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Martin-Blanco N, Blanco R, Alda-Catalinas C, Bovolenta ER, Oeste CL, Palmer E, Schamel WW, Lythe G, Molina-París C, Castro M, Alarcon B. A window of opportunity for cooperativity in the T Cell Receptor. Nat Commun 2018; 9:2618. [PMID: 29976994 PMCID: PMC6033938 DOI: 10.1038/s41467-018-05050-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 06/10/2018] [Indexed: 01/15/2023] Open
Abstract
The T-cell antigen receptor (TCR) is pre-organised in oligomers, known as nanoclusters. Nanoclusters could provide a framework for inter-TCR cooperativity upon peptide antigen-major histocompatibility complex (pMHC) binding. Here we have used soluble pMHC oligomers in search for cooperativity effects along the plasma membrane plane. We find that initial binding events favour subsequent pMHC binding to additional TCRs, during a narrow temporal window. This behaviour can be explained by a 3-state model of TCR transition from Resting to Active, to a final Inhibited state. By disrupting nanoclusters and hampering the Active conformation, we show that TCR cooperativity is consistent with TCR nanoclusters adopting the Active state in a coordinated manner. Preferential binding of pMHC to the Active TCR at the immunological synapse suggests that there is a transient time frame for signal amplification in the TCR, allowing the T cells to keep track of antigen quantity and binding time. T cells can be activated by a small, two-digit, number of antigen peptide molecules even though the receptor for antigen (TCR) is of low affinity. Here the authors present evidence that all TCRs within a nanocluster can become activated when only a subset is bound to antigen.
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Castro M, Fernandes JO, Pena A, Cunha SC. Occurrence, profile and spatial distribution of UV-filters and musk fragrances in mussels from Portuguese coastline. MARINE ENVIRONMENTAL RESEARCH 2018; 138:110-118. [PMID: 29709294 DOI: 10.1016/j.marenvres.2018.04.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 04/13/2018] [Accepted: 04/16/2018] [Indexed: 06/08/2023]
Abstract
The increasing production and consumption of Personal Care Products (PCPs), containing UV-filters and musk fragrances, has led to its widespread presence in the aquatic environment which can cause harmful effects to the aquatic organisms due to its intrinsic toxicity. This study aims to evaluate the degree of contamination of wild mussels along the entire Portuguese coastline, continually exposed in their habitat to different contaminants. For this purpose, approximately 1000 mussel specimens were sampled during one year in seven different locations, along the Portuguese coastline. Simultaneous quantification of five UV-filters and seven musks in mussels was achieved by a Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) extraction procedure combined with dispersive liquid-liquid microextraction (DLLME) followed by gas chromatography with mass spectrometry (GC-MS) analysis. Ten out of the twelve target analytes were found in the analysed samples, highlighting the presence of AHTN (tonalide), EHS (2-ethylhexylsalicylate) and EHMC (2-ethylhexyl 4-methoxycinnamate) in all positive samples (93%). Overall, the results obtained indicate a widespread contamination of wild mussels along Portuguese coastline, all over the year. UV-filters were more frequently detected (90%) than musk fragrances (70%) and also quantified at higher levels, with average total concentrations reaching 1155.8 ng/g (dw) against 397.7 ng/g (dw) respectively. A high correlation was observed between the most densely populated and industrialized locations and the higher levels of musks and UV-filters found. In other hand, lower levels of PCPs were found in protected areas. As expected, an increase in UV-filters levels was observed after the summer, likely due to the intense period of recreational activities.
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Torres P, Castro M, Reyes M, Torres VA. Histatins, wound healing, and cell migration. Oral Dis 2018; 24:1150-1160. [PMID: 29230909 DOI: 10.1111/odi.12816] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 12/04/2017] [Accepted: 12/05/2017] [Indexed: 12/20/2022]
Abstract
Wounds in the oral mucosa heal faster and more efficiently than those in the skin, although the mechanisms underlying these differences are not completely clear. In the last 10 years, a group of salivary peptides, the histatins, has gained attention on behalf of their ability to improve several phases of the wound-healing process. In addition to their roles as anti-microbial agents and in enamel maintenance, histatins elicit other biological effects, namely by promoting the migration of different cell types contained in the oral mucosa and in non-oral tissues. Histatins, and specifically histatin-1, promote cell adhesion and migration in oral keratinocytes, gingival and dermal fibroblasts, non-oral epithelial cells, and endothelial cells. This is particularly relevant, as histatin-1 promotes the re-epithelialization phase and the angiogenic responses by increasing epithelial and endothelial cell migration. Although the molecular mechanisms associated with histatin-dependent cell migration remain poorly understood, recent studies have pointed to the control of signaling endosomes and the balance of small GTPases. This review aimed to update the literature on the effects of histatins in cell migration, with a focus on wound healing. We will also discuss the consequences that this increasing field will have in disease and therapy design.
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Ortega H, Albers F, Llanos JP, Bardford E, Price RG, Pouliquen I, Castro M. Impact of weight on the efficacy of mepolizumab in patients with severe eosinophilic asthma. Pneumologie 2018. [DOI: 10.1055/s-0037-1619160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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62
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Anota EC, Villanueva MS, Shakerzadeh E, Castro M. Adsorption and possible dissociation of glucose by the [BN fullerene-B6]− magnetic nanocomposite. In silico studies. APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0664-5] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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63
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Cunha SC, Trabalón L, Jacobs S, Castro M, Fernandez-Tejedor M, Granby K, Verbeke W, Kwadijk C, Ferrari F, Robbens J, Sioen I, Pocurull E, Marques A, Fernandes JO, Domingo JL. UV-filters and musk fragrances in seafood commercialized in Europe Union: Occurrence, risk and exposure assessment. ENVIRONMENTAL RESEARCH 2018; 161:399-408. [PMID: 29197758 DOI: 10.1016/j.envres.2017.11.015] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 11/05/2017] [Accepted: 11/09/2017] [Indexed: 05/24/2023]
Abstract
In the framework of the FP7 ECsafeSeafood project, 62 seafood samples commercialized in Europe Union from several representative species - mackerel, tuna, salmon, seabream, cod, monkfish, crab, shrimp, octopus, perch and plaice - were analysed for residues of 21 personal care products (PCPs), including 11 UV-filters (UV-Fs) and 10 musk fragrances (musks). PCPs analysis were performed by Quick, Easy, Cheap, Effective Rugged, Safe (QuEChERS), combined with liquid-liquid extraction (LLE) or dispersive solid-phase extraction (dSPE), followed by gas chromatography-tandem mass spectrometry (GC-MS/MS). The results showed the presence in a wide range of samples of nine out of eleven UV-Fs compounds analysed, namely 2-ethylhexyl salicylate (EHS), 2-ethylhexyl,4-methoxycinnamate (EHMC), 4-methylbenzylidenecamphor (4-MBC), benzophenone-1 (BP1), benzophenone-3 (BP3), isoamyl-4-methoxycinnamate (IMC), 2,2'-dihydroxy-4,4'-dimethoxybenzophenone (DHMB), homosalate (HS), and octocrylene (OC), whereas galaxolide (HHCB), galaxolide lactone (HHCB-lactone), and tonalide (AHTN) were the most found musks. The potential risks to human health associated with the exposure to eight of the more prevalent PCPs - EHS, EHMC, 4-MBC, BP1, BP3, IMC, HHCB, and AHTN - through seafood consumption were assessed for consumers from five European countries (Belgium, Ireland, Italy, Portugal and Spain). Results showed that the human exposure to UV-Fs and musks estimated from the concentration values found in seafood and the daily consumption of concerned seafood species, were far below toxicological reference values.
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Marques I, Loureiro J, Draper D, Castro M, Castro S. How much do we know about the frequency of hybridisation and polyploidy in the Mediterranean region? PLANT BIOLOGY (STUTTGART, GERMANY) 2018; 20 Suppl 1:21-37. [PMID: 28963818 DOI: 10.1111/plb.12639] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 09/25/2017] [Indexed: 06/07/2023]
Abstract
Natural hybridisation and polyploidy are currently recognised as drivers of biodiversity, despite early scepticism about their importance. The Mediterranean region is a biodiversity hotspot where geological and climatic events have created numerous opportunities for speciation through hybridisation and polyploidy. Still, our knowledge on the frequency of these mechanisms in the region is largely limited, despite both phenomena are frequently cited in studies of Mediterranean plants. We reviewed information available from biodiversity and cytogenetic databases to provide the first estimates of hybridisation and polyploidy frequency in the Mediterranean region. We also inspected the most comprehensive modern Mediterranean Flora (Flora iberica) to survey the frequency and taxonomic distribution of hybrids and polyploids in Iberian Peninsula. We found that <6% of Mediterranean plants were hybrids, although a higher frequency was estimated for the Iberian Peninsula (13%). Hybrids were concentrated in few families and in even fewer genera. The overall frequency of polyploidy (36.5%) was comparable with previous estimates in other regions; however our estimates increased when analysing the Iberian Peninsula (48.8%). A surprisingly high incidence of species harbouring two or more ploidy levels was also observed (21.7%). A review of the available literature also showed that the ecological factors driving emergence and establishment of new entities are still poorly studied in the Mediterranean flora, although geographic barriers seem to play a major role in polyploid complexes. Finally, this study reveals several gaps and limitations in our current knowledge about the frequency of hybridisation and polyploidy in the Mediterranean region. The obtained estimates might change in the future with the increasing number of studies; still, rather than setting the complete reality, we hope that this work triggers future studies on hybridisation and polyploidy in the Mediterranean region.
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Muñoz-Pajares AJ, Perfectti F, Loureiro J, Abdelaziz M, Biella P, Castro M, Castro S, Gómez JM. Niche differences may explain the geographic distribution of cytotypes in Erysimum mediohispanicum. PLANT BIOLOGY (STUTTGART, GERMANY) 2018; 20 Suppl 1:139-147. [PMID: 28741843 DOI: 10.1111/plb.12605] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 07/18/2017] [Indexed: 05/26/2023]
Abstract
Polyploidisation has played an important role in plant diversification, and variation in ploidy level may be found not only between species of the same genus, but also within a single species. Although establishing the adaptive significance of polyploidy to explain the geographic distribution of cytotypes is challenging, the occurrence of different cytotypes in different ecological niches may suggest an adaptive role of genome duplication. We studied the adaptive significance of the geographic distribution of cytotypes across the entire distribution range of the endemic Erysimum mediohispanicum (Brassicaceae). For that, we have used climate variables, population elevation and soil properties to model ecological niches for the different cytotypes. In addition, we analysed the effect that ploidy level has on the floral phenotype. We found a clear geographic pattern in the distribution of cytotypes, with diploid individuals occurring in the southernmost part of the distribution range, while tetraploids were found in the northern area. A contact (mosaic) zone between both cytotypes was identified, but diploids and tetraploids occur in sympatry in only one population (although in a highly unbalanced proportion). Gene flow between different cytotypes seems to be negligible, as evident from an almost complete absence of triploids and other minority cytotypes. Niches occupied by both cytotypes showed subtle, but significant differences, even in the contact zone. Precipitation was higher in regions occupied by tetraploid individuals, which present wider corolla tubes and thinner but taller stalks than diploids. Our findings highlight the potential role of polyploidy in the ecological adaptation of E. mediohispanicum to both abiotic factors and biotic interactions.
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Ortega H, Albers F, Llanos-Ackert J, Bradford E, Price R, Pouliquen I, Castro M. P506 Impact of weight on the efficacy of mepolizumab in patients with severe eosinophilic asthma. Ann Allergy Asthma Immunol 2017. [DOI: 10.1016/j.anai.2017.09.072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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67
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Katial R, Albers F, Prazma C, Bradford E, Ortega H, Price R, Pouliquen I, Castro M. P505 Impact of weight on steroid reduction in patients with severe eosinophilic asthma treated with mepolizumab. Ann Allergy Asthma Immunol 2017. [DOI: 10.1016/j.anai.2017.09.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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68
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Castro M, Horie L, Kawamura K, Rascov F, Toledo D. MON-P005: Diabetes Specific Enteral Formulas in ICU. Clin Nutr 2017. [DOI: 10.1016/s0261-5614(17)31078-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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69
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Freitas P, Santos A, Goncalves M, Oliveira A, Santos A, Oliveira J, Gago M, Mamede R, Correira D, Vale N, Castro M, Mesquita J, Brito J, Ferreira J, Mendes M. P1612Prognosis of pulmonary embolism: risk stratification in non high-risk patients. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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70
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Granato C, Maldonado G, Italiano G, Dentamaro I, Mendez I, Castro M, Vazquez M, Rodriguez-Bailon I, Fernandez-Casare S, De La Morena G, Sevilla T, Evangelista A. P6350Non-dilated aorta in bicuspid aortic valve patients: prevalence and determinants. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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71
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Vale N, Madeira S, Almeida M, Seabra Gomes R, Castro M, Rodrigues G, Raposo L, Gabriel H, Goncalves P, Teles R, Mendes M. P6111First generation drug eluting stents outperform bare metal stents in 10-year survival. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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72
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Augusto Goncalves M, Tralhao A, Henriques J, Teixeira C, Ferreira J, Oliveira A, Guerreiro S, Mesquita J, Vale N, Castro M, Silva C, Matos D, Azinheira J, Figueira J, Mendes M. P2753Diagnostic yield of high sensitivity cardiac troponin for acute myocardial infarction in the emergency room: when sensitivity does not meet specificity. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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73
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Rodriguez N, Escudero C, Castro M, Medina N, Santacruz J, De La Espriella R, Cano Gutierrez C. INTERNAL CONSISTENCY OF GERIATRIC DEPRESSION SCALE: CHALLENGE FOR NEW PROPOSALS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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74
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Parallada G, Sereno V, Caballero G, Fernández M, Castro M, Montero D, Altez S, Rey A. 319 Nutritional intervention at the cystic fibrosis reference center of children and adults in Uruguay. J Cyst Fibros 2017. [DOI: 10.1016/s1569-1993(17)30657-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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75
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Trejo-Soto C, Costa-Miracle E, Rodriguez-Villarreal I, Cid J, Castro M, Alarcon T, Hernandez-Machado A. Front microrheology of the non-Newtonian behaviour of blood: scaling theory of erythrocyte aggregation by aging. SOFT MATTER 2017; 13:3042-3047. [PMID: 28375423 DOI: 10.1039/c6sm02412b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We introduce a new framework to study the non-Newtonian behaviour of fluids at the microscale based on the analysis of front advancement. We apply this methodology to study the non-linear rheology of blood in microchannels. We carry out experiments in which the non-linear viscosity of blood samples is quantified at different haematocrits and ages. Under these conditions, blood exhibits a power-law dependence on the shear rate. In order to analyse our experimental data, we put forward a scaling theory which allows us to define an adhesion scaling number. This theory yields a scaling behaviour of the viscosity expressed as a function of the adhesion capillary number. By applying this scaling theory to samples of different ages, we are able to quantify how the characteristic adhesion energy varies as time progresses. This connection between microscopic and mesoscopic properties allows us to estimate quantitatively the change in the cell-cell adhesion energies as the sample ages.
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