Suchergebnisse

This work was supported by funds from group CTS-107 (Andalusian Government). F. J. Q. acknowledges the FPU2019 grant from the Ministerio de Educacion Ciencia y Deporte y Competitividad (Spain). ; Introducción: El tratamiento del cáncer de páncreas en estadios avanzados se basa en diferentes regímenes de quimioterapia. Las células madre cancerosas son responsables de la quimiorresistencia tumoral y la recurrencia tras tratamientos en etapa adyuvante y metastásica. El objetivo de este artículo fue evaluar cómo estos regímenes quimioterapéuticos afectan a la proporción de células madre cancerosas y la expresión de sus marcadores. Método: Utilizamos la línea celular de adenocarcinoma pancreático PANC-1 como modelo para aplicar diferentes protocolos quimioterapéuticos (monoterapia y terapia combinada) utilizando 5-Fluorouracilo, Oxaliplatino, Irinotecán, Gemcitabina y Abraxane. Resultados: Tras analizar mediante RT-qPCR diferentes marcadores de células madre tumorales (SOX2, OCT4, CD133, CD44 y CD24) en células de cáncer de páncreas tratadas con diferentes protocolos quimioterapéuticos, el Oxaliplatino y la Gemcitabina en monoterapia fueron los quimioterápicos que seleccionaron en mayor medida las células madre cancerosas mientras que el protocolo FOLFIRI las disminuyó. Conclusiones: En cuanto a la selección de marcadores, ha sido mucho mayor en el caso de Gemcitabina en monoterapia. En conclusión, estos hallazgos podrían mejorar y personalizar la terapia del cáncer de páncreas. ; Introduction: Pancreatic cancer treatment in advanced stages is based on different chemotherapy regimens. Cancer stem cells are responsible for tumor chemoresistance and recurrence in adjuvant and metastatic settings. The objective of this article was to evaluate how these chemotherapeutic regimens affect the proportion of cancer stem cells and the expression of stemness markers. Method: We used the pancreatic adenocarcinoma cell line PANC-1 as a model to apply different chemotherapeutic protocols (monotherapy and combined therapy) using ...

Sodium selenite acts by depleting enzymes that protect against cellular oxidative stress. To determine its effect alone or in combination with gemcitabine (GMZ) in pancreatic cancer, we used PANC-1 and Pan02 cell lines and C57BL mice bearing a Pan02-generated tumor. Our results demonstrated a significant inhibition of pancreatic cancer cell viability with the use of sodium selenite alone and a synergistic effect when associated with GMZ. The molecular mechanisms of the antitumor effect of sodium selenite alone involved apoptosis-inducing factor (AIF) and the expression of phospho-p38 in the combined therapy. In addition, sodium selenite alone and in association with GMZ significantly decreased the migration capacity and colony-forming ability, reduced tumor activity in multicellular tumor spheroids (MTS) and decreased sphere formation of cancer stem cells. In vivo studies demonstrated that combined therapy not only inhibited tumor growth (65%) compared to the untreated group but also relative to sodium selenite or GMZ used as monotherapy (up to 40%), increasing mice survival. These results were supported by the analysis of C57BL/6 albino mice bearing a Pan02-generated tumor, using the IVIS system. In conclusion, our results showed that sodium selenite is a potential agent for the improvement in the treatment of pancreatic cancer and should be considered for future human clinical trials. ; CTS-107 (Andalusian Government) ; ISCIII (DTS 17/00081-FEDER) ; FPU - Ministerio de Educacion Ciencia y Deporte y Competitividad (Spain) ; Scientific Instrumentation Center (CIC) from the Granada University

Immune and glial cells play a pivotal role in chronic pain. Therefore, it is possible that the pharmacological modulation of neurotransmission from an exclusively neuronal perspective may not be enough for adequate pain management, and the modulation of complex interactions between neurons and other cell types might be needed for successful pain relief. In this article, we review the current scientific evidence for the modulatory effects of sigma-1 receptors on communication between the immune and nervous systems during inflammation, as well as the influence of this receptor on peripheral and central neuroinflammation. Several experimental models of pathological pain are considered, including peripheral and central neuropathic pain, osteoarthritic, and cancer pain. Sigma-1 receptor inhibition prevents peripheral (macrophage infiltration into the dorsal root ganglion) and central (activation of microglia and astrocytes) neuroinflammation in several pain models, and enhances immune-driven peripheral opioid analgesia during painful inflammation, maximizing the analgesic potential of peripheral immune cells. Therefore, sigma-1 antagonists may constitute a new class of analgesics with an unprecedented mechanism of action and potential utility in several painful disorders. ; Training University Lecturers program (FPU) of the Spanish Ministry of Economy and Competitiveness (MINECO) ; Biomedical Research Institute, Hospital Clfnico Universitario in Valencia (INCLIVA) ; Spanish State Research Agency of MINECO SAF2016-80540-R PID2019-108691RB-100 ; Andalusian Regional Government CTS109 ; European Commission

This research was funded by the International Excellence Campus of the Sea (CEI-MAR) through Project CEIJ-016, as well as the Spanish Ministry of Science, Innovation and Universities and the European Union through projects RTC-2017-6540-1 and RTI-2018-100934-B-I00 and the FEDER program, respectively. The funders had no role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript. ; Nannochloropsis gaditana is a microalga with interesting nutritional and functional value due to its high content of protein, polyunsaturated fatty acids, and bioactive compounds. However, the hardness of its cell wall prevents accessibility to these components. This work aimed to study the effect of a treatment to increase the fragility of the cell wall on the bioavailability of its nutrients and functional compounds. The antioxidant and antiproliferative capacity of functional extracts from treated and untreated N. gaditana was assessed, and the profile of bioactive compounds was characterized. Furthermore, to study the effect of treatment on its nutrient availability and functional capacity, an in vivo experiment was carried out using a rat experimental model and a 20% dietary inclusion level of microalgae. Functional extracts from treated N. gaditana exhibited higher antioxidant activity than the untreated control. Furthermore, the treated microalga induced hypoglycemic action, higher nitrogen digestibility, and increased hepatic antioxidant activity. In conclusion, N. gaditana has interesting hepatoprotective, antioxidant, and anti-inflammatory potential, thus proving itself an ideal functional food candidate, especially if the microalga is treated to increase the fragility of its cell wall before consumption. ; International Excellence Campus of the Sea (CEI-MAR) CEIJ-016 ; Spanish Government European Commission RTC-2017-6540-1 RTI-2018-100934-B-I00

This research was funded by the University of Granada through project PSE/17/002 of Plan Propio, as well as the Spanish Ministry of Science, Innovation and Universities and the European Union through projects RTC-2017-6540-1, and RTI-2018-100934-B-I00 and the FEDER program, respectively. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. ; The use of legumes as functional foods has gained increasing attention for the prevention and treatment of the so called non-communicable diseases that are highly prevalent worldwide. In this regard, biotechnological approaches for the enhancement of legumes' nutritional and functional value have been extensively employed. In the present study, the process of germination increased several parameters of mung bean (Vigna radiata L.) functionality, including extract yield, total phenolic content and in vitro antioxidant capacity. In addition, 3-day-germinated mung bean proved to be an interesting source of dietary essential minerals and exhibited a greater variety of polyphenolic compounds compared to raw mung bean. These properties resulted in enhanced cytoprotective features of the 3-day mung bean extracts against radical oxygen species in human colorectal (HT29) and monocyte (U937) cell lines. Moreover, the antiproliferative effects were tested in different colon cancer cell lines, T84 and drug-resistant HCT-18, as well as in a non-tumor colon CCD-18 line. Altogether, our results demonstrate that the germination process improves the mung bean's nutritional value and its potential as a functional food. ; University of Granada through Plan Propio PSE/17/002 ; Spanish Ministry of Science, Innovation and Universities ; European Union (EU) RTC-2017-6540-1 RTI-2018-100934-B-I00