Publications by authors named "C Segura"

Aging is tightly associated with reduced immune protection but increased risk of autoimmunity and inflammatory conditions. Regulatory T cells are one of the key cells to maintaining immune homeostasis. The age-dependent changes in CD4Foxp3 regulatory T cells (Tregs) have been well documented.

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Article Synopsis
  • Immunotherapy has enhanced survival rates for patients with advanced clear cell renal cell carcinoma (ccRCC), but many patients still develop resistance to treatment.
  • A study examined tumor samples from patients with both treatment-naïve and treatment-exposed ccRCC, revealing that tumors exposed to immunotherapy contained more immune cells (like CD8+ T cells and neutrophils) and showed significant changes in cellular markers.
  • Key findings included increased expression of COL4A1 and ITGAV in the stroma of treated tumors, suggesting a need for further investigation into how these changes impact the tumor immune environment and potential new therapies.
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This study proposes a portable and IoT-based electrochemical point-of-care sensing device for detecting zopiclone in cocktails. The system utilizes an electrochemical laccase biosensor and a potentiostat, offering a low-cost and portable device for detecting this sedative drug in cocktails. The sensor characterization experiments demonstrated the linear behavior of the oxidation and reduction currents for each of the targeted concentrations of zopiclone, enabling their detection and quantification even when mixed with an interfering substance.

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The effect of peptide toxins on voltage-gated ion channels can be reliably assessed using electrophysiological assays, such as the patch-clamp technique. However, much of the toxinological research done in Central and South America aims at purifying and characterizing biochemical properties of the toxins of vegetal or animal origin, lacking electrophysiological approaches. This may happen due to technical and infrastructure limitations or because researchers are unfamiliar with the techniques and cellular models that can be used to gain information about the effect of a molecule on ion channels.

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Background: In oncology, the suffering of patients and the burnout of health professionals are key issues. Mindfulness meditation is a holistic approach that can help to improve well-being. While numerous studies have shown the benefits of meditation for both patients and health professionals, the added value of offering shared meditation to groups of patients, health professionals and third persons has not been assessed.

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