32 documents found, page 1 of 4

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Urocortin-2 as a novel biomarker of patient outcomes in HFpEF: A prospective co...

Vasconcelos, Inês; Adão, Rui; Nóvoa, Francisco Vasques; Moreira, Adelino Leite; Barros, António S.; Silva, Carmen


Diagnostic and monitoring applications using Near infrared (NIR) Spectroscopy i...

Vitorino, Rui; Barros, António S.; Guedes, Sofia; Caixeta, Douglas C.; Sabino-Silva, Robinson

Early cancer diagnosis plays a critical role in improving treatment outcomes and increasing survival rates for certain cancers. NIR spectroscopy offers a rapid and cost-effective approach to evaluate the optical properties of tissues at the microvessel level and provides valuable molecular insights. The integration of NIR spectroscopy with advanced data-driven algorithms in portable instruments has made it a cu...


Acute Kidney Injury after Coronary Artery Bypass Graft Surgery: The heterogenei...

Sousa, Patrícia; Moreira, Raquel; Saraiva, José; Cerqueira, Rui J.; Barros, António S.; Saraiva, Francisca A.; Leite-Moreira, Adelino

Introduction: Meta-analysis is the method to pool data from studies that report the same event in a comparable sample and, thus, summarize information from different populations. However, data extraction is limited to the information provided in the included studies. Frequently, individual patient information is not available, hence, real world data access is limited. Individual patient data (IPD) meta-analysis...


Comparing one sample’s observed survival with the expected in the general popul...

Moreira, Raquel; Saraiva, Francisca A.; Cerqueira, Rui J.; Ferreira, Ana F.; Amorim, Mário J.; Barros, António S.; Pinho, Paulo; Lourenço, André P.


EARLY AND MIDTERM OUTCOMES FOLLOWING AORTIC VALVE REPLACEMENT WITH MECHANICAL V...

Rocha, Rafael; Cerqueira, Rui J.; Saraiva, Francisca; Moreira, Sara; Barros, António S.; Almeida, Jorge; Amorim, Mário J.; Lourenço, André P.

Objectives: To compare 7-year survival and freedom from reoperation, as well as early clinical and hemodynamic outcomes, after surgical aortic valve replacement (SAVR) with mechanical or bioprosthetic valves in patients aged 50-70 years. Methods: single-center retrospective cohort study including adults aged 50-70 years who underwent SAVR in 2012 with a mechanical or bioprosthetic valve. Median follow-up was 7 ...


Reconstructing survival data from published Kaplan-Meier curves: an algorithm v...

Saraiva, Francisca Almeida; Leite-Moreira, João P.; Lourenço, André P.; Barros, António S.; Leite-Moreira, Adelino

Background: The number of health-related publications has been exponential in the recent decade. Indeed, cardiovascular area includes more than 670k papers published at MEDLINE [((cardiovascular) NOT ((("Animals"[Mesh] NOT ("Animals"[Mesh] AND "Humans"[Mesh])))], of which, more than 20k are related to coronary artery bypass grafting (CABG). We are witnessing a 6% increase in publications per year. The growth in...


Influence of EPICardial adipose tissue in HEART diseases (EPICHEART) study: Pro...

Mancio, Jennifer; Barros, António S.; Conceicão, Glória; Santa, Cátia; Pessoa-Amorim, Guilherme; Bartosch, Carla; Fragao-Marques, Mariana

Accumulation of epicardial adipose tissue (EAT) is associated with coronary artery disease (CAD) and increased risk of coronary events in asymptomatic subjects and low-risk patients, suggesting that EAT promotes atherosclerosis in its early stage. Recent studies have shown that the presence of CAD affects the properties of adjacent EAT, leading to dynamic changes in the molecular players involved in the interpl...


Quinones as Strecker degradation reagents in wine oxidation processes

Oliveira, Carla Maria; Santos, Sónia A. O.; Silvestre, Armando J. D.; Barros, António S.; Ferreira, António César Silva; Silva, Artur M. S.

The Strecker aldehydes formed during the reaction between α-amino acids (phenylalanine or methionine) and either gallic acid, caffeic acid or (+)-catechin ortho-quinones were evaluated in wine-model systems. It was demonstrated that phenylacetaldehyde was formed by quinone intermediates at wine pH. The highest amounts of phenylacetaldehyde during the 10days of experiment (69±5µg/L/day; 7x>Control) were obtained...


Characterization of 2,3-diarylxanthones by electrospray mass spectrometry: gas-...

Silva, Eduarda M.P.; Barros, Cristina M.R.F.; Santos, Clementina M.M.; Barros, António S.; Domingues, Maria R.M.; Silva, Artur

Xanthones (XH) are a class of heterocyclic compounds widely distributed in nature that hold numerous noteworthy biological and antioxidant activities. Therefore, it is of utmost importance to achieve relevant detailed structural information to understand and assist prediction of their biological properties. The potential relationship between radical-mediated xanthone chemistry in the gas phase and their promisi...

Date: 2016   |   Origin: Biblioteca Digital do IPB

Nuclear magnetic resonance metabolomics reveals an excretory metabolic signatur...

Monteiro, Márcia S.; Barros, António S.; Pinto, Joana; Carvalho, Márcia; Pires-Luís, Ana S.; Henrique, Rui; Jerónimo, Carmen; Bastos, Maria de Lourdes

RCC usually develops and progresses asymptomatically and, when detected, it is frequently at advanced stages and metastatic, entailing a dismal prognosis. Therefore, there is an obvious demand for new strategies enabling an earlier diagnosis. The importance of metabolic rearrangements for carcinogenesis unlocked a new approach for cancer research, catalyzing the increased use of metabolomics. The present study ...


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