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Ítem Non-invasive assessment of β-carotene levels in the skin of colombian adults(Ediciones Doyma, 2012-05-01) Agredo Zúñiga, Ricardo AntonioIntroduction: Carotenoid pigments have antioxidant properties beneficial for human health. Use of resonance Raman spectroscopy (RRS) as a reliable method for measuring carotenoid levels in tissues such as dermis has been suggested. However, data about the variability and reproducibility of this technique should be collected before it can be used. Objective: To assess reproducibility of RRS for detection of total β-carotene levels in the skin of Colombian adults.Ítem Postprandial lipemia induces endothelial dysfunction and higher insulin resistance in healthy subjects(Ediciones Doyma, 2011-12-11) Ramírez Vélez, RobinsonObjective: To assess the effect of postprandial lipemia on endothelial function, insulin resistance, and lipid profile in healthy subjects. Patients and methods: A prospective', interventional study in 14 healthy young men aged 18-25 years who were given a high-fat meal. Endothelial function was measured using flow-mediated dilation (FMD) in the brachial artery, flow velocity, mean arterial pressure and serum nitrite/nitrate levels (NO 2/NO 3). Glucose, insulin, total cholesterol, and triglyceride levels were also tested.