Biological Analysis
Mostrando 1-12 de 3702 artigos, teses e dissertações.
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1. ANALYSIS OF BENZODIAZEPINES IN PLASMA SAMPLES BY DLLME AND LC-DAD: CRITICAL ASPECTS, FLAWS AND ISSUES ENCOUNTERED - A DISCUSSION
Dispersive liquid-liquid microextraction (DLLME) is a fast and simple technique and applicable procedure for the analysis of xenobiotics in different biological matrices. We have developed a DLLME method for the determination of benzodiazepines in plasma samples using liquid chromatography-diode-array detection (LC-DAD). During method validation, relative st
Química Nova. Publicado em: 2022
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2. Development and application of a test mixture for untargeted liquid chromatography-mass spectrometry analysis of urine samples
Metabolic profiling of complex biological matrices based on liquid chromatography-mass spectrometry (LC-MS) allows detecting a wide range of metabolites with distinct concentrations and physicochemical properties. Given the complexity of samples and the necessity of a comprehensive approach in untargeted metabolomics, quality control strategies are mandatory
Química Nova. Publicado em: 2022
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3. A FRAMEWORK FOR CRITICAL DISCOURSE STUDIES ON MENTAL HEALTH
Abstract In this article, I present a framework for critical discourse studies on mental health. By relying on principles belonging to Critical Discourse Studies (Flowerdew & Richardson, 2018; van Leeuwen, 2008; Fairclough, 2018; 2001), and the Sociology of Health (Caponi, 2014; Martínez-Hernáez, 2014; Mitjavila, 2015; Rose & Abi-Rached, 2014), at first I
Ilha do Desterro. Publicado em: 2022
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4. Bioprosthetic Aortic Valve Degeneration: a Review from a Basic Science Perspective
Abstract Introduction: The increase in the prevalence of aortic stenosis due to an aging population has led to an increasing number of surgical aortic valve replacements. Over the past 20 years, there has been a major shift in preference from mechanical to bioprosthetic valves. However, despite efforts, there is still no "ideal" bioprosthesis. It is crucial
Brazilian Journal of Cardiovascular Surgery. Publicado em: 2022
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5. Knowledge of and adherence to standard precautions in a hemodialysis unit: a cross-sectional study
Abstract BACKGROUND: Standard precautions (SPs) are recommended safety measures for healthcare professionals to follow, with a view to preventing healthcare-related infections (HCRIs) and for their own protection. Inadequate adherence to these measures can lead to occurrences of occupational accidents and HCRIs. OBJECTIVES: To ascertain the knowledge of an
Sao Paulo Medical Journal. Publicado em: 2022
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6. Quality Control for Lignin and Gelatin Microcapsules Loaded with Orange Essential Oil
Sustainable natural product-based microstructured systems and biopolymers are strong candidates for use in crop protection. Lignin and gelatin microcapsules loaded with orange essential oil were developed with spray-drying in order to enhance its potential. We evaluated the microparticle controlled release mechanisms, biological effects, structural and therm
Journal of the Brazilian Chemical Society. Publicado em: 2022
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7. Risk factors associated with nonalcoholic fatty liver disease evaluated by elastography in patients with type 2 diabetes
ABSTRACT Objective: There is controversy about the indication for nonalcoholic fatty liver disease (NAFLD) screening in patients with type 2 diabetes mellitus (T2D). The present study aims to contribute to NAFLD surveillance in patients with T2D, assessing the association of clinical and biological variables with hepatic stiffness and steatosis. Subjects a
Archives of Endocrinology and Metabolism. Publicado em: 2022
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8. Colorectal Cancer: Comparative Analysis Between Two Series of Patients Separated by More Than Three Decades
Abstract Aim This study characterizes Colorectal Cancer (CRC) incidence in the University Hospital Ramon and Cajal, Madrid, and analyzes variations over time. It establishes risk groups, aiming to discover whether diagnosis can be determined in less advanced stages of disease. Method Evolutionary epidemiological study of genetic and environmental factors c
Journal of Coloproctology (Rio de Janeiro). Publicado em: 2022
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9. METHODS FOR EXTRACTION AND ISOLATION OF AGATHISFLAVONE FROM POINCIANELLA PYRAMIDALIS
Agathisflavone is a natural biflavone with restricted occurrence in plants. This biflavone presents several biological activities and can be important to developing new drugs. Obtaining such a molecule on a large scale for in vivo tests is a challenge. To date, there are no reports regarding its synthesis; thus, it is important to improve and develop methods
Química Nova. Publicado em: 2022
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10. Serum Long-Noncoding RNA H19 and β-Catenin as Biomarkers for Early Diagnosis of Colorectal Cancer in Egyptian Patients: A Case Control Study
Abstract Colorectal cancer (CRC) is the third most prevalent cancer and the second most common cause of cancer death; however, its early detection can improve the survival. Colonic polyps are considered one of the CRC's major risk factors. Throughout many biological processes and malignancies, the non-coding RNAs have essential functions. Certain long noncod
Journal of Coloproctology (Rio de Janeiro). Publicado em: 2022
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11. Natural and Semisynthetic Triterpenes from Combretum leprosum Mart. with Antiplasmodial Activity
Malaria is responsible for thousands of deaths each year. Currently, artemisinin combination therapy (ACT) is used as first-choice medication against the disease. However, the emergence of resistant strains prompts the search for alternative compounds. The present study aimed to investigate the antiplasmodial activities of natural triterpenes (compounds 1 an
Journal of the Brazilian Chemical Society. Publicado em: 2022
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12. Capoeira: hypothesis on health rehabilitation and quality-of-life maintenance
SUMMARY OBJECTIVE: The aim of this work was to present hypotheses supporting capoeira as an activity aimed at health rehabilitation and maintenance of quality of life. METHODS: Capoeira players (n=245), residing in Brazil and abroad, were evaluated for quality of life (physical, social, psychological, and environmental domains from WHOQOL-bref). The capoei
Revista da Associação Médica Brasileira. Publicado em: 2022