Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 33
Filtrar
1.
Infect Dis Ther ; 2024 Mar 23.
Artigo em Inglês | MEDLINE | ID: mdl-38520629

RESUMO

INTRODUCTION: Respiratory syncytial virus (RSV) burden in adults is underestimated mainly due to unspecific symptoms and limited standard-of-care testing. We estimated the population-based incidence of hospitalization and mortality attributable to RSV among adults with and without risk factors in Germany. METHODS: Weekly counts of hospitalizations and deaths for respiratory, cardiovascular, and cardiorespiratory diseases were obtained (Statutory Health Insurance database, 2015-2019). A quasi-Poisson regression model was fitted to estimate the number of hospitalizations and deaths attributable to RSV as a function of periodic and aperiodic time trends, and viral activity while allowing for potential overdispersion. Weekly counts of RSV and influenza hospitalizations in children < 2 years and adults ≥ 60 years, respectively, were used as viral activity indicators. Models were stratified by age group and risk status (defined as presence of selected comorbidities). RESULTS: Population-based RSV-attributable hospitalization incidence rates were high among adults ≥ 60 years: respiratory hospitalizations (236-363 per 100,000 person-years) and cardiorespiratory hospitalizations (584-912 per 100,000 person-years). RSV accounted for 2-3% of all cardiorespiratory hospitalizations in this age group. The increase in cardiorespiratory hospitalization risk associated with underlying risk factors was greater in 18-44 year old persons (five to sixfold higher) than in ≥ 75 year old persons (two to threefold higher). CONCLUSIONS: This is a first model-based study to comprehensively assess adult RSV burden in Germany. Estimated cardiorespiratory RSV hospitalization rates increased with age and were substantially higher in people with risk factors compared to those without risk factors. Our study indicates that RSV, like other respiratory viruses, contributes to both respiratory and cardiovascular hospitalizations. Effective prevention strategies are needed, especially among older adults ≥ 60 years and among adults with underlying risk factors.

3.
Plant Foods Hum Nutr ; 78(2): 292-298, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-36826692

RESUMO

Lupin is a very nutritious legume with high levels of protein and fiber, but it also contains quinolizidine alkaloids which, depending on the species, can accumulate to toxic levels. The objective of this work was to evaluate the white lupin chemical composition, due to the effects of different processes (aqueous debittering, extrusion cooking, and reactive extrusion), aiming at reducing total alkaloids, preserving fibers, and increasing in vitro protein digestibility. Regarding raw material, the aqueous process reduced significantly total alkaloids (-93.87%), increased dietary fiber (+22.03%), and increased protein digestibility (+6.73%), whereas the extrusion processes were inefficient to reduce alkaloids (< -3.70%) and reduced the dietary fiber content, the reduction being more severe during reactive extrusion (-75.36%). Protein digestibility was improved by extrusion cooking (+3.07%), while the reactive extrusion reduced digestibility (-12.50%). Electrophoresis and quantification of soluble proteins and aromatic amino acids confirmed the high digestibility index, staying only the γ-conglutin fraction in the digested samples evaluated by SDS-PAGE. The aqueous process proved to be the best option, as it reduces the alkaloid content to safe levels and improves the protein digestion of white lupin flour.


Assuntos
Alcaloides , Lupinus , Lupinus/química , Farinha/análise , Culinária , Fibras na Dieta/análise , Alcaloides/análise , Sementes/química
5.
Plant Foods Hum Nutr ; 78(1): 100-108, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36344771

RESUMO

This study aimed to understand how the addition of pinto bean flour (PBF) and margarine affected the technological, sensory, and physicochemical properties of red rice-based gluten-free cookies. PBF addition (25-75 g/100 g) and margarine content (13.3-19.3 g/100 g dough) were varied according to a central composite rotatable design. Cookies selection was performed by overlaid contour and principal component analysis (PCA) for technological properties and sensory evaluation, respectively. Chemical composition analyses, bioactive compounds, and microstructure were carried out in the selected formulations. In addition, other physicochemical analyses were carried out during storage time. PBF addition affected the technological properties and increased the nutritional content of proteins (up to 13%), fibers (8.28%), iron (2.13%), zinc (1.54%), and phenolic compounds (139.46 mg gallic acid equivalent/100 g), but it negatively affected sensory acceptance. However, margarine's addition improved all the sensory attributes in all the trials, showing an acceptance greater than 70%. Cookies with 50 g PBF, 50 g red rice flour, and 16.3 g margarine/100 g dough showed better technological, nutritional characteristics, and physicochemical quality up to 60 days of storage. This work contributed to the incorporation of mixtures of red rice and pinto bean for developing more nutritious cookies for celiac patients or even those who wish to consume gluten-free products.


Assuntos
Farinha , Oryza , Farinha/análise , Glutens , Margarina , Dieta Livre de Glúten
6.
Cancers (Basel) ; 14(15)2022 Jul 28.
Artigo em Inglês | MEDLINE | ID: mdl-35954339

RESUMO

(1) Background: Squamous cell carcinoma (SCC) is one of the leading causes of cancer-related deaths worldwide. CD109 is overexpressed in many cancers including SCC. Although a pro-tumorigenic role for CD109 has been shown in non-SCC cancers, and in one type of SCC, the mechanisms and signaling pathways reported are discrepant. (2) Methods: The CD109-EGFR interaction and CD109-mediated regulation of EGFR expression, signaling, and stemness were studied using microarray, immunoblot, immunoprecipitation, qPCR, immunofluorescence, and/or spheroid formation assays. The role of CD109 in tumor progression and metastasis was studied using xenograft tumor growth and metastatic models. (3) Results: We establish the in vivo tumorigenicity of CD109 in vulvar SCC cells and demonstrate that CD109 is an essential regulator of EGFR expression at the mRNA and protein levels and of EGFR/AKT signaling in vulvar and hypopharyngeal SCC cells. Furthermore, we show that the mechanism involves EGFR-CD109 heteromerization and colocalization, leading to the stabilization of EGFR levels. Additionally, we demonstrate that the maintenance of epithelial morphology and in vitro tumorigenicity of SCC cells require CD109 localization to the cell surface. (4) Conclusions: Our study identifies an essential role for CD109 in vulvar SCC progression. We demonstrate that CD109 regulates SCC cellular stemness and epithelial morphology via a cell-surface CD109-EGFR interaction, stabilization of EGFR levels and EGFR/AKT signaling.

7.
Ann Surg Oncol ; 2022 Apr 04.
Artigo em Inglês | MEDLINE | ID: mdl-35377063

RESUMO

BACKGROUND: Platelet to lymphocyte ratio (PLR) is associated with survival in oesophageal cancer. We explored whether PLR changes during different stages of treatment correlate with survival outcomes. METHODS: A retrospective single-centre study was performed. Consecutive patients who received neoadjuvant chemotherapy followed by surgery for oesophageal adenocarcinoma were identified. Changes in PLR were calculated during two time periods: the first spanning the neoadjuvant period (T1); the second the perioperative period (T2). Differences in PLR were calculated for clinicopathological variables during both T1 and T2 and for variables with regards to their association with median overall survival (OS). Variables found to be significant on univariate analysis were included in a multivariate Cox regression model. Using ROC analysis, optimal cut-offs for PLR changes were identified and plotted on a Kaplan-Meir curve. RESULTS: Of the 370 patients identified, 110 (29.7%) were included in the analysis. During T1 a positive correlation was noted between higher positive lymph node ratio and PLR change. During T2, PLR change was positively higher in patients who suffered major postoperative complications. Median survival for the cohort as a whole was 42.3 months and 5-year OS was 57.3%. Survival at 5 years was associated with lower PLR changes during T2. On univaraite analysis, median OS was significantly less for patients with a tumour size > 3 cm, poor differentiation and change in PLR ≥ 43.4 during T2. The latter two variables remained significant on multivariate analysis. Using the same PLR threshold, the survival curve comparing changes in PLR during T2 remained statistically significant. CONCLUSION: Perioperative PLR changes are highly prognostic of survival outcomes in patients treated for oesophageal adenocarcinoma.

8.
Preprint em Inglês | medRxiv | ID: ppmedrxiv-22270676

RESUMO

There is still a need for safe, efficient and low-cost coronavirus disease 2019 (COVID-19) vaccines that can stop transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Here we evaluated a vaccine candidate based on a live recombinant Newcastle disease virus (NDV) that expresses a stable version of the spike protein in infected cells as well as on the surface of the viral particle (AVX/COVID-12-HEXAPRO, also known as NDV-HXP-S). This vaccine candidate can be grown in embryonated eggs at low cost similar to influenza virus vaccines and it can also be administered intranasally, potentially to induce mucosal immunity. We evaluated this vaccine candidate in prime-boost regimens via intramuscular, intranasal, or intranasal followed by intramuscular routes in an open label non-randomized non-placebo-controlled phase I clinical trial in Mexico in 91 volunteers. The primary objective of the trial was to assess vaccine safety and the secondary objective was to determine the immunogenicity of the different vaccine regimens. In the interim analysis reported here, the vaccine was found to be safe and the higher doses tested were found to be immunogenic when given intramuscularly or intranasally followed by intramuscular administration, providing the basis for further clinical development of the vaccine candidate. The study is registered under ClinicalTrials.gov identifier NCT04871737. Funding was provided by Avimex and CONACYT.

9.
Pak J Biol Sci ; 24(4): 468-476, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34486306

RESUMO

<b>Background and Objective:</b> Forage production in the tropics is generally asymmetrically distributed. Hence the need to use more complex models, especially when multiple comparisons are made and there are very large deviations from normality. The objective of this research is to fit a Generalized Additive Model for Location, Scale and Shape (GAMLSS) model on accumulated dry matter data from <i>Brachiaria brizantha</i> using a model selection algorithm. <b>Materials and Methods:</b> A Box-Cox Power Exponential (BCPE) distribution was adjusted on the dry matter from <i>Brachiaria brizantha</i> data implementing GAMLSS in R (programming language). The accumulated dry matter data for <i>B. brizantha</i> were obtained from a study carried out on a farm in the state of Portuguesa, Venezuela. The explanatory covariate x was the interval between cuts (21, 28, 35 and 42 days). <b>Results:</b> The dependent variable (dry matter) exhibited both skewness and kurtosis. GAMLSS allowed flexible modeling of both the distribution of the dry matter yield from <i>B. brizantha</i> and the dependence of all the parameters of the distribution on intervals between cuttings. For the dry matter yield from <i>B. brizantha</i>, which exhibited skewness and leptokurtosis, the BCPE distribution, provided the best fit. <b>Conclusion:</b> The interval between cuttings showed an effect that is reflected in the average yield of dry matter from <i>B. brizantha</i>. The interval between cuts affected the skewness and the kurtosis of the distribution.


Assuntos
Algoritmos , Brachiaria/crescimento & desenvolvimento , Mapeamento Geográfico , Agricultura/métodos , Humanos , Venezuela
10.
Ann Thorac Surg ; 112(6): 1790-1796, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33440175

RESUMO

BACKGROUND: This study investigated the role of the neutrophil-to-lymphocyte ratio (NLR) in predicting anastomotic leak (AL) after esophagectomy for esophageal adenocarcinoma. METHODS: This is a retrospective analysis of a prospectively collected database from the McGill University Health Center. Included were all patients with esophageal adenocarcinoma who underwent esophagectomy between 2005 and 2016. Patients with chronic infections, concurrent active malignancies, and autoimmune conditions were excluded. NLR values were obtained on postoperative days (POD) 0, 1, 2, and 3. Receiver operating characteristic curve study and multivariable logistic analysis were conducted to evaluate the diagnostic value of NLR. RESULTS: The study included 330 patients, and AL developed in 16%. Mean NLR values on POD1, 2, and 3 were higher in patients with leaks (20 vs 14 on POD1, P < .001; 20 vs 12 on POD2, P < .001; and 19 vs 10 on POD3, P < .001). The NLR value on POD3 was associated with an area under the curve of 70% and a negative predictive value of 92.4%. Multivariable analyses identified higher American Society of Anesthesiologists Physical Status Classification, increasing NLR trend (between POD1 and POD3), POD1 NLR, POD2 NLR, and POD3 NLR as independent factors associated with AL. CONCLUSIONS: Patients who developed AL demonstrate higher mean NLR values in the early postoperative period with rising trends. Conversely a low NLR is associated with a high negative predictive value for AL. This simple metric allows risk stratification that may guide treatment decisions in esophagectomy patients.


Assuntos
Adenocarcinoma/cirurgia , Fístula Anastomótica/sangue , Neoplasias Esofágicas/cirurgia , Esofagectomia/efeitos adversos , Esôfago/cirurgia , Inflamação/sangue , Medição de Risco/métodos , Idoso , Anastomose Cirúrgica/efeitos adversos , Fístula Anastomótica/diagnóstico , Fístula Anastomótica/epidemiologia , Biomarcadores/sangue , Feminino , Humanos , Incidência , Masculino , Período Pós-Operatório , Prognóstico , Quebeque/epidemiologia , Estudos Retrospectivos
11.
Plant Foods Hum Nutr ; 76(1): 68-75, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33483848

RESUMO

The objective of this work was to evaluate the effects of feed moisture (13-17%, wb) and barrel temperature (120-160 °C) on physicochemical properties, and changes in the carotenoid profile of maize grits extruded snacks. The extrudates were obtained in a single-screw extruder, according to a 32 factorial design with two replicates. The linear coefficients of feed moisture and barrel temperature mainly affected the physicochemical properties. On the other hand, the interaction coefficient ß112 dominated the change in total carotenoids, lutein, zeaxanthin, and ß-carotene. The quadratic coefficients were also important for changes in total color (regarding feed moisture), and for ß-cryptoxanthin, specific mechanical energy, and volumetric expansion index (regarding barrel temperature). ß-cryptoxanthin and ß-carotene increased, whereas lutein and zeaxanthin decreased. The mathematical models developed from responses revealed two feasible operating regions under the domain explored. For a satisfactory process, from a technological and nutritional point of view, it is suggested to extrude at the operating conditions ranging between 13.2-13.7% feed moisture and 120-132 °C barrel temperature. Under these conditions, the specific mechanical energy input required was 410-450 kJ/kg, and extrudates with a volumetric expansion index greater than 12, a crispness work less than 0.4 N.mm, and with moderate increments in the levels of ß-carotene and ß-cryptoxanthin were produced. The use of richer cultivars in carotenoids could contribute to the production of healthier snacks.


Assuntos
Lanches , Zea mays , Carotenoides , Temperatura , beta Caroteno
12.
Injury ; 51(11): 2449-2459, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32829895

RESUMO

The Wnt/ß-catenin signaling pathway is critical for bone differentiation and regeneration. Tideglusib, a selective FDA approved glycogen synthase kinase-3ß (GSK-3ß) inhibitor, has been shown to promote dentine formation, but its effect on bone has not been examined. Our objective was to study the effect of localized Tideglusib administration on bone repair. Bone healing between Tideglusib treated and control mice was analysed at 7, 14 and 28 days postoperative (PO) with microCT, dynamic histomorphometry and immunohistology. There was a local downregulation of GSK-3ß in Tideglusib animals, resulting in a significant increase in the amount of new bone formation with both enhanced cortical bone bridging and medullary bone deposition. The bone formation in the Tideglusib group was characterized by early osteoblast differentiation with down-regulation of GSK-3ß at day 7 and 14, and higher accumulation of active ß-catenin at day 14. Here, for the first time, we show a positive effect of Tideglusib on bone formation through the inactivation of GSK-3ß. Furthermore, the findings suggest that Tideglusib does not interfere with precursor cell recruitment and commitment, contrary to other GSK-3ß antagonists such as lithium chloride. Taken together, the results indicate that Tideglusib could be used directly at a fracture site during the initial intraoperative internal fixation without the need for further surgery, injection or drug delivery system. This FDA-approved drug may be useful in the future for the prevention of non-union in patients presenting with a high risk for fracture-healing.


Assuntos
Preparações Farmacêuticas , beta Catenina , Animais , Regeneração Óssea , Osso e Ossos , Glicogênio Sintase Quinase 3 beta , Humanos , Camundongos
13.
Microorganisms ; 7(8)2019 Jul 28.
Artigo em Inglês | MEDLINE | ID: mdl-31357684

RESUMO

Corn is one of the most cultivated cereals in Brazil. However, its grains are constantly exposed to contamination by mycotoxins. Corn grits are used by the food industry to produce a large variety of corn products such as canjiquinha, a cultural food easily purchased by the Brazilian consumer at low prices. Some studies have demonstrated high contamination of this product by aflatoxins (AFs), representing a potential risk of exposure due to such a contamination. In this study, the efficacy of gaseous ozonation was evaluated on the levels of aflatoxins and on the microbial contamination of corn grits. The application of gaseous ozone was tested in different combinations of exposure time, ozone concentration, and canjiquinha mass. After the ozonation treatment, samples were collected for aflatoxin and microbiological analyses. Aflatoxins were evaluated using a high-performance liquid chromatography with fluorescence detection (HPLC-FD) system using pre-column derivatization, and the microbiological analyses were carried out for toxin-producer fungi and mesophilic bacteria. After ozone detoxification, results showed reductions up to 57% in aflatoxin levels. Total fungal count was reduced around 3.0 cycles log CFU g-1 and total mesophilic counts were reduced to non-detectable levels. These results demonstrated that ozonation is an effective alternative for reducing aflatoxin and microbial contamination in products like canjiquinha, thereby improving food safety.

14.
Hig. aliment ; 33(288/289): 1425-1429, abr.-maio 2019. tab
Artigo em Português | LILACS, VETINDEX | ID: biblio-1482175

RESUMO

O objetivo deste trabalho foi verificar o efeito da atividade de água (Aw) nas farinhas de cascas e albedo de maracujá (FCAM) e farinha de arroz (FA) processadas por extrusão, gerando uma farinha mista pré-cozida de casca e albedo e arroz (FMCAMA). A determinação da (Aw) foi realizada utilizando aparelho digital Aqualab®, modelo CX-2, à temperatura de 25ºC. Os resultados da (Aw) foram mais baixos para as amostras de farinha de cascas e albedo de maracujá e arroz nas amostras FMCAMA1 (0,276±0,015), FMCAMA2 (0,227±0,005) e FMCAMA3 (0,259±0,034) do que para as amostras de FMI industrializada: FMI1 (0,618±0,005), FMI2 (0,553±0,003) e FMI3 (0,540±0,004).


Assuntos
Aproveitamento Integral dos Alimentos , Oryza , Passiflora , Água/análise , Fenômenos Químicos , Resíduos de Alimentos
15.
Food Chem ; 228: 287-296, 2017 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-28317726

RESUMO

The influence of whey protein concentrate (WPC), feed moisture and temperature on the physicochemical properties of rice-based extrudates has been investigated. WPC (0.64-7.36g/100g rice) was extruded under 5 moisture (16.64-23.36g/100g) and 5 temperature (106.36-173.64°C) established by a 32 central composite rotational design. Physicochemical properties [color, porosimetry, crystallinity, water solubility and absorption, pasting properties, reconstitution test, proximate composition, amino acids, minerals and electrophoresis] were determined. WPC and feed moisture increased redness, yellowness and decreased luminosity. Feed moisture and temperature increased density and total volume pore. WPC and moisture increased crystallinity, but only WPC increased solubility and decrease the retrogradation tendency. Increasing temperature increased the viscosity of the extrudates. The addition of WPC improved the nutritional composition of the extrudates, especially proteins. It is suggested that the extrusion process positively affected the retention of most of the polypeptides chains.


Assuntos
Eletroforese em Gel Bidimensional/métodos , Farinha/análise , Manipulação de Alimentos/métodos , Oryza/química , Proteínas do Soro do Leite/química , Difração de Raios X/métodos , Temperatura
16.
Ciênc. rural ; 46(4): 739-746, Apr. 2016.
Artigo em Português | LILACS | ID: lil-775159

RESUMO

RESUMO: O ultrassom é considerado uma tecnologia limpa, por possibilitar menor gasto de energia, de substâncias químicas e menor geração de efluentes. Além disso, proporciona menor tempo de processamento e reduz a necessidade de aplicação de calor em vários processos. Por isso, tem sido alvo de pesquisa e desenvolvimento na indústria de alimentos, tanto para substituir, quanto para aperfeiçoar ou acelerar técnicas convencionais de processamento. Dentre as diferentes possibilidades de utilização na indústria de alimentos, o ultrassom pode ser considerado uma alternativa para substituir ou reduzir a utilização de substâncias químicas em processos de extração ou modificação de amidos. Quando utilizado na extração, possibilita maior pureza do amido obtido. Já na modificação, algumas alterações nos grânulos de amido podem ser provocadas pelo ultrassom, mas dependem da origem botânica, da composição do amido, dos parâmetros do equipamento e das condições de processamento.


ABSTRACT: Ultrasound is considered a clean technology, because it allows lower energy and chemicals compounds consumption as well as lower generation of waste. Furthermore, it provides shorter processing time and reduces the need for heat application in various processes. Therefore, this technology has been studied in the food industry to replace, improve or accelerate conventional processing techniques. Among the different possibilities of use in the food industry, ultrasound might be considered as an alternative to replace or reduce the use of chemicals during the extraction processes or modification of starches. When used in the starch extraction allows a greater purity of the final product. Towards the modification some changes in the starch granules can be caused by ultrasound, but it depends on the botanical source and starch composition, equipment's parameters and processing conditions.

17.
Sci Rep ; 5: 17499, 2015 Dec 07.
Artigo em Inglês | MEDLINE | ID: mdl-26639561

RESUMO

BIM is a proapoptotic protein that initiates apoptosis triggered by EGFR tyrosine kinase inhibitors (TKI). mTOR negatively regulates apoptosis and may influence response to EGFR TKI. We examined mRNA expression of BIM and MTOR in 57 patients with EGFR-mutant NSCLC from the EURTAC trial. Risk of mortality and disease progression was lower in patients with high BIM compared with low/intermediate BIM mRNA levels. Analysis of MTOR further divided patients with high BIM expression into two groups, with those having both high BIM and MTOR experiencing shorter overall and progression-free survival to erlotinib. Validation of our results was performed in an independent cohort of 19 patients with EGFR-mutant NSCLC treated with EGFR TKIs. In EGFR-mutant lung adenocarcinoma cell lines with high BIM expression, concomitant high mTOR expression increased IC50 of gefitinib for cell proliferation. We next sought to analyse the signalling pattern in cell lines with strong activation of mTOR and its substrate P-S6. We showed that mTOR and phosphodiesterase 4D (PDE4D) strongly correlate in resistant EGFR-mutant cancer cell lines. These data suggest that the combination of EGFR TKI with mTOR or PDE4 inhibitors could be adequate therapy for EGFR-mutant NSCLC patients with high pretreatment levels of BIM and mTOR.


Assuntos
Proteínas Reguladoras de Apoptose/genética , Carcinoma Pulmonar de Células não Pequenas/genética , Receptores ErbB/genética , Cloridrato de Erlotinib/uso terapêutico , Neoplasias Pulmonares/genética , Proteínas de Membrana/genética , Mutação/genética , Proteínas Proto-Oncogênicas/genética , Serina-Treonina Quinases TOR/genética , Idoso , Apoptose/efeitos dos fármacos , Apoptose/genética , Proteínas Reguladoras de Apoptose/metabolismo , Proteína 11 Semelhante a Bcl-2 , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/patologia , Estudos de Coortes , Intervalo Livre de Doença , Cloridrato de Erlotinib/farmacologia , Feminino , Gefitinibe , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Humanos , Concentração Inibidora 50 , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/patologia , Masculino , Proteínas de Membrana/metabolismo , Pessoa de Meia-Idade , Proteínas Proto-Oncogênicas/metabolismo , Quinazolinas/farmacologia , Quinazolinas/uso terapêutico , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Transdução de Sinais/efeitos dos fármacos , Transdução de Sinais/genética , Serina-Treonina Quinases TOR/metabolismo , Resultado do Tratamento
18.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-149988

RESUMO

PURPOSE: To identify the factors affecting the surgical decisions of experienced physicians when treating patients with lower urinary tract symptoms that are suggestive of benign prostatic hyperplasia (LUTS/BPH). METHODS: Patients with LUTS/BPH treated by two physicians between October 2004 and August 2013 were included in this study. The causal Bayesian network (CBN) model was used to analyze factors influencing the surgical decisions of physicians and the actual performance of surgery. The accuracies of the established CBN models were verified using linear regression (LR) analysis. RESULTS: A total of 1,108 patients with LUTS/BPH were analyzed. The mean age and total prostate volume (TPV) were 66.2 (+/-7.3, standard deviation) years and 47.3 (+/-25.4) mL, respectively. Of the total 1,108 patients, 603 (54.4%) were treated by physician A and 505 (45.6%) were treated by physician B. Although surgery was recommended to 699 patients (63.1%), 589 (53.2%) actually underwent surgery. Our CBN model showed that the TPV (R=0.432), treating physician (R=0.370), bladder outlet obstruction (BOO) on urodynamic study (UDS) (R=0.324), and International Prostate Symptom Score (IPSS) question 3 (intermittency; R=0.141) were the factors directly influencing the surgical decision. The transition zone volume (R=0.396), treating physician (R=0.340), and BOO (R=0.300) directly affected the performance of surgery. Compared to the LR model, the area under the receiver operating characteristic curve of the CBN surgical decision model was slightly compromised (0.803 vs. 0.847, P<0.001), whereas that of the actual performance of surgery model was similar (0.801 vs. 0.820, P=0.063) to the LR model. CONCLUSIONS: The TPV, treating physician, BOO on UDS, and the IPSS item of intermittency were factors that directly influenced decision-making in physicians treating patients with LUTS/BPH.


Assuntos
Humanos , Teorema de Bayes , Tomada de Decisões Assistida por Computador , Técnicas de Apoio para a Decisão , Modelos Lineares , Sintomas do Trato Urinário Inferior , Próstata , Hiperplasia Prostática , Curva ROC , Obstrução do Colo da Bexiga Urinária , Urodinâmica
19.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-53936

RESUMO

In this article we introduce modern statistical machine learning and bioinformatics approaches that have been used in learning statistical relationships from big data in medicine and behavioral science that typically include clinical, genomic (and proteomic) and environmental variables. Every year, data collected from biomedical and behavioral science is getting larger and more complicated. Thus, in medicine, we also need to be aware of this trend and understand the statistical tools that are available to analyze these datasets. Many statistical analyses that are aimed to analyze such big datasets have been introduced recently. However, given many different types of clinical, genomic, and environmental data, it is rather uncommon to see statistical methods that combine knowledge resulting from those different data types. To this extent, we will introduce big data in terms of clinical data, single nucleotide polymorphism and gene expression studies and their interactions with environment. In this article, we will introduce the concept of well-known regression analyses such as linear and logistic regressions that has been widely used in clinical data analyses and modern statistical models such as Bayesian networks that has been introduced to analyze more complicated data. Also we will discuss how to represent the interaction among clinical, genomic, and environmental data in using modern statistical models. We conclude this article with a promising modern statistical method called Bayesian networks that is suitable in analyzing big data sets that consists with different type of large data from clinical, genomic, and environmental data. Such statistical model form big data will provide us with more comprehensive understanding of human physiology and disease.


Assuntos
Humanos , Teorema de Bayes , Ciências do Comportamento , Biologia Computacional , Interpretação Estatística de Dados , Conjunto de Dados , Expressão Gênica , Aprendizagem , Modelos Logísticos , Aprendizado de Máquina , Modelos Estatísticos , Fisiologia , Polimorfismo de Nucleotídeo Único , Estatística como Assunto , Biologia de Sistemas
20.
Hig. aliment ; 27(226/227): 156-160, 30/12/2013. tab
Artigo em Português | LILACS | ID: biblio-964255

RESUMO

Alimentos de fácil e rápido preparo são alvos da indústria de alimentos, visto que grande parte da população mundial, em função do atribulado cotidiano, possui pouco tempo para alimentação no lar. O objetivo deste trabalho foi avaliar a aceitabilidade de sopas instantâneas à base de milho e feijão do tipo carioca, por meio de análise sensorial, assim como elaborar ficha de preparo para as mesmas. O estudo contou com a participação de 65 julgadores não treinados, de ambos os sexos, com idade igual ou superior a 18 anos, sendo estes alunos, professores e funcionários do Centro de Ciências Agrárias da Universidade Federal do Espírito Santo. Após a análise estatística dos dados por meio do teste Tukey foi verificado que não houve diferença significativa (p>0,05) entre as amostras de sopas. Pode-se considerar posteriormente maior diluição das mesmas, pois sua consistência foi considerada um atributo de pouca aceitação.


Ready to eat foods are the main target of food industry, since the most part of the population, due to the troubled daily life, have almost no time for preparing food at home. The aim of this study was to evaluate the acceptability of instant soups made from maize and Carioca type beans, through sensory analysis, as well as elaborate a preparation form for soups. This study had the participation of 65 untrained panelists of both sexes, aged over 18 years, among them, students, professors and staff of the Espirito Santo Federal University (CCA-UFES). After statistical analysis using the Tukey test was detected no significant difference (p> 0.05) between the soups. It can be considered a greater dilution of the samples, once its consistency was considered an attribute of low acceptance.


Assuntos
Interpretação Estatística de Dados , Padrão de Identidade e Qualidade para Produtos e Serviços , Alimentos Industrializados , Sopas , Dieta Saudável , Brasil , Grão Comestível , Zea mays , Fast Foods , Farinha , Fabaceae
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...