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- 저자 : Isabel João (검색결과 4 건)
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Rui Azevedo Guerreiro,Paula Fazendas,Ana Rita Pereira,Ana Marques,João Pais,Sofia Alegria,Kisa Hyde Congo,Ana Catarina Gomes,João Carvalho,Gonçalo Morgado,Inês Cruz,Ana Rita Almeida,Isabel João,Hélder 한국심초음파학회 2020 Journal of Cardiovascular Imaging (J Cardiovasc Im Vol.28 No.2
BACKGROUND: Stress echocardiography has a 72%–85% sensitivity and an 80%–95% specificity. In this study, we characterized patients who received a false-positive stress echocardiogram result. METHODS: A total of 5,256 patients underwent a stress echocardiogram (induced by exercise, dobutamine, or dipyridamole) between 2009 to 2018, and 405 patients (7.7%) received a positive result. Among the positive patients, 300 underwent coronary angiography within 12 months, and these patients were included in this study (mean age = 64.9 ± 9.4 years, 230 men [76.7%]). Coronary artery disease was diagnosed by stenosis ≥50% in any epicardial coronary artery. Clinical and echocardiographic variables were compared between patients with true- and false-positive stress echocardiogram results. RESULTS: Seventy-two patients (24%) had a false-positive stress echocardiogram, with similar rates across stressor types (p = 0.574). Patients with false positives were less frequently men (63.9% vs. 80.7%, p = 0.003), had lower diabetes mellitus prevalence (15.3% vs. 45.6%, p = 0.001), were similar to true positive patients with regard to body-mass index, arterial hypertension prevalence, hyperlipidemia and smoking, and had lower pre-test probability of coronary artery disease (23% vs. 32%, p = 0.016). The wall motion score index (WMSI) was higher in the true-positive stress group, and wall motion abnormalities were more frequent in the apical segments (70.5% vs. 56.7%, p = 0.034). In a multivariable predictive model, men (odds ratio [OR] = 2.994), diabetes (OR = 5.440), and peak WMSI (OR = 10.690) were associated with a true-positive result. CONCLUSIONS: Twenty-four percent of our study population received a false-positive stress echocardiogram result, with similar rates across stressor types. Patients with true-positive stress echocardiogram results are more likely to be men, diabetic, and have a high peak WMSI.
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A Culture-Independent Comparison of Microbial Communities of Two Maturating Craft Beers Styles
Costa João,Sierra-Garcia Isabel N.,Cunha Angela 한국미생물·생명공학회 2022 한국미생물·생명공학회지 Vol.50 No.3
The process of manufacturing craft beer involves a wide variety of spontaneous microorganisms, acting in different stages of the brewing process, that contribute to the distinctive characteristics of each style. The objective of this work was to compare the structure of microbial communities associated with two different craft beer styles (Doppelbock and Märzen lagers), at a late maturation stage, and to identify discriminative, or style-specific taxa. Bacterial and fungal microbial communities were analyzed by Illumina sequencing of 16S rRNA gene of prokaryotes and the ITS 2 spacer of fungi (eukaryotes). Fungal communities in maturating beer were dominated by the yeast Dekkera, and by lactic acid (Lactobacillus and Pediococcus) and acetic acid (Acetobacter) bacteria. The Doppelbock barrels presented more rich and diverse fungal communities. The Märzen barrels were more variable in terms of structure and composition of fungal and bacterial communities, with occurrence of exclusive taxa of fungi (Aspergillus sp.) and bacteria (L. kimchicus). Minority bacterial taxa, differently represented in the microbiome of each barrel, may underlie the variability between barrels and ultimately, the distinctive traits of each style. The composition of the microbial communities indicates that in addition to differences related to upstream stages of the brewing process, the contact with the wood barrels may contribute to the definition of style-specific microbiological traits.
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Sandra Branco,João Orvalho,Alexandre Leitão,Isadora Pereira,Manuel Malta,Isabel Mariano,Tânia Carvalho,Rui Baptista,Brian R. Shiels,Maria C. Peleteiro 대한수의학회 2010 JOURNAL OF VETERINARY SCIENCE Vol.11 No.1
This study was carried out to investigate fifteen cases of acute lethal infection of calves (≤ 4 months of age) by the protozoan parasite Theileria (T.) annulata in the south of Portugal. Calves developed multifocal to coalescent nodular skin lesions, similar to multicentric malignant lymphoma. Infestation with ticks (genus Hyalomma) was intense. Theileria was seen in blood and lymph node smears, and T. annulata infection was confirmed by isolation of schizont-transformed cells and sequencing of hypervariable region 4 of the 18S rRNA gene. At necropsy, hemorrhagic nodules or nodules with a hemorrhagic halo were seen, particularly in the skin, subcutaneous tissue, skeletal and cardiac muscles, pharynx, trachea and intestinal serosa. Histologically, nodules were formed by large, round, lymphoblastoid neoplastic-like cells. Immunohistochemistry (IHC) identified these cells as mostly CD3 positive T lymphocytes and MAC387 positive macrophages. A marker for B lymphocytes (CD79αcy) labeled very few cells. T. annulata infected cells in these nodules were also identified by IHC through the use of two monoclonal antibodies (1C7 and 1C12) which are diagnostic for the parasite. It was concluded that the pathological changes observed in the different organs and tissues were caused by proliferation of schizont-infected macrophages, which subsequently stimulate a severe uncontrolled proliferation of uninfected T lymphocytes.
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Cultural memories, discursive gaps, and tourism promotion: A framework for applied research
Marcelo G. Oliveira,Maria do Carmo Leal,Maria Isabel Roque,Maria João Forte,Sara Rodrigues de Sousa,Antónia Correia 한국마케팅과학회 2017 마케팅과학연구 Vol.27 No.4
Recent studies about the relation between heritage and tourism have consistently signaled the existence of fractures between the cultural reality of tourism destinations and the cognitive and emotional experience of contemporary visitors. On the other hand, the study of the relations between tourism and literature and the recent valorization of storytelling in tourism promotion have both pointed out the importance of diff erent types of discourses in the constitution of tourism spaces and the shaping of visitors’ expectations and experiences. When the desire for authenticity expressed by cultural tourists is also taken into account, the existence of inconsistencies between the cultural realities of destinations, existing discourses and the expectations and perceptions of tourists becomes apparent. Adapting, in an innovative approach, the Gap Model of Service Quality, this paper intends to present a research framework capable of enlightening existing cultural inconsistencies considering the discourses involved in the promotion and experience of tourism destinations. The framework will be applied in an exploratory investigation of the role of José Saramago’s Baltasar and Blimunda in the tourism promotion of Mafra and Lisbon, Portugal, with the aim of developing a conceptual model capable of describing inconsistencies in the promotion and experience of cultural destinations and facilitating the development of adequate mediation proposals .
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