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Mostrando ítems 141-149 de 149
Kidney-gut crosstalk in renal disease
(Springer Nature, 2020)
Introduction The colon has an important role in managing nitrogenous waste products, electrolytes, and mineral balance during
kidney diseases. However, colonic microbiota produces uremic toxins, such as indoxyl sulfate and p-cresyl sulfate, in chronic
kidney disease (CKD) patients, which due to their proinflammatory properties contribute to CKD progression. Conversely, in
acute renal injury patients, intestinal microbiota could reduce inflammation by secreting short-chain fatty acids and inducing a
renal protective immune response. However, ...
Is “Leptin Resistance” Another Key Resistance to Manage Type 2 Diabetes?
(Bentham Science Publishers, 2020)
Although novel pharmacological options for the treatment of type 2 diabetes mellitus (DM2) have been observed to modulate the functionality of several key organs in glucose homeostasis, successful regulation of insulin resistance (IR), body weight management, and pharmacological treatment of obesity remain notable problems in endocrinology. Leptin may be a pivotal player in this scenario, as an adipokine which centrally regulates appetite and energy balance. In obesity, excessive caloric intake promotes a low-grade inflammatory response, which ...
Capacidade de inovação versus Capacidade de internacionalização O caso das PMEs colombianas de manufatura da região do Atlântico
(IEEE, 2020)
Apesar dos esforços do governo colombiano para
promover exportações não tradicionais, os efeitos das medidas
ainda não representam incremento expressivo. No mesmo sentido,
o acesso das pequenas e médias empresas (PMEs) – que são
predominantes no país - aos mercados internacionais é pouco
significativo. Estudos anteriores sugerem que existe uma relação
direta entre o grau de inovação e o grau de internacionalização das
organizações. Neste cenário, o presente artigo tem como objetivo
analisar esta relação a partir do estudo de campo realizado ...
Estimation of PQ distance dispersion for atrial fibrillation detection
(Elsevier, 2021)
Background and objective: Atrial fibrillation (AF) is the most common cardiac arrhythmia in the world. It is associated with significantly increased morbidity and mortality. Diagnosis of the disease can be based on the analysis of the electrical atrial activity, on quantification of the heart rate irregularity or on a mixture of the both approaches. Since the amplitude of the atrial waves is small, their analysis can lead to false results. On the other hand, the heart rate based analysis usually leads to many unnecessary warnings. Therefore, our ...
Semi-automated detection of aortic root in human heart MSCT images using nonlinear filtering and unsupervised clustering
(Inderscience Publishers, 2021)
Abstract: A semiautomatic technique to detect the aortic root in three-dimensional multi-slice computerised tomography images is proposed. Three steps are considered: conditioning, filtering, and detection. The conditioning is based on multi-planar reconstruction and it is required for reformatting the information to orthogonal planes to the aortic root. During the filtering, three nonlinear filters based on similarity enhancement, median and weighted median are considered to reduce noise and enhance the reformatted images. In the detection, the ...
Attitudes of Medical Students Towards Psychiatry in Venezuela: a 6-Year Longitudinal Study
(Springer, 2021)
Objective
The authors evaluated changes in attitude towards psychiatry of medical students in one medical school in Venezuela.
Methods
Balon’s modified questionnaire was administered to first and sixth-year medical students to analyze their attitude towards psychiatry. The answers were compared with McNemar’s test.
Results
The students’ negative perception of psychiatry increased by the end of medical school with 45% of sixth-year students reportedly feeling uncomfortable when working with patients with psychiatric illness compared to ...
Age-specific waist circumference cutoff-points for abdominal obesity diagnosis: a personalized strategy for a large Venezuelan population
(Springer, 2021)
Background
Evidence shows that the ageing process is a determining factor in fat distribution, composition, and functionality. The goal of this research was to determine cut-off points for waist circumference according to age in the adult population from Maracaibo city, Venezuela.
Methodology
The Metabolic Syndrome Prevalence Study is a descriptive, cross-sectional study with multi-stage randomized sampling. In this post-hoc analysis 1902 individuals ≥18 years and from both sexes were evaluated. Waist circumference ROC curves were built for ...
Feminización de la migración venezolana documentada en su punto de origen durante 2018 y 2019
(Centro Studi Emigrazione Roma (CSER), 2022)
In the history of international migration, the woman was a secondary
migrant and her own right as a migrant was not recognized during the
process: origin, transit, and destination. This work aims to characterize
the international migration of Venezuelan women documented at their
point of origin during 2018 and 2019, considering sociodemographic
variables, causes of migration, migration networks of migrant women
and their companions during the trip. The results reveal that more than
50% of the women are between 18 and 29 years old and single; ...
Influencia del coeficiente intelectual sobre los resultados de las pruebas saber 11, saber pro y promedio académico en estudiantes de noveno y décimo semestre de psicología de la Universidad Simón Bolívar - sede Barranquilla.
(Ediciones Universidad Simón BolívarFacultad de Ciencias Jurídicas y Sociales, 2013)
La presente propuesta de investigación tuvo por objetivo establecer la influencia del coeficiente intelectual sobre los resultados de las pruebas saber 11, saber PRO y promedio académico en estudiantes de noveno y décimo semestre de psicología de la Universidad Simón Bolívar - sede Barranquilla. El estudio planteado es cuantitativo con diseño ex post facto; los instrumentos de recolección de la información fueron: el test de Raven, el examen Saber Once, el examen Saber Pro (periodos I y II de 2012) y el promedio académico acumulado obtenido por ...