Browsing by Subject "Bioactivity"

Now showing 1 - 6 of 6
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    Biocompatibility of new pulp-capping materials NeoMTA Plus, MTA Repair HP and Biodentine on human dental pulp stem cells
    (Elsevier Science, 2017-11-01) Tomás Catalá, Christopher Joseph; Collado-González, Mar; García Bernal, David; Oñate Sánchez, Ricardo Elías; Forner, Leopoldo; Llena, Carmen; Lozano, Adrián; Moraleda Jiménez, José María; Rodríguez Lozano, Francisco Javier; Biología Celular e Histología
    Introduction: The aim of the present study was to evaluate the in vitro cytotoxicity of MTA Repair HP, Neo-MTA Plus, and Biodentine, new bioactive materials used for dental pulp capping, on human dental pulp stem cells (hDPSCs). Methods: Biological testing was carried out in vitro on hDPSCs. Cell viability and cell migration assays were performed using eluates of each capping material. To evaluate cell morphology and cell attachment to the different materials, hDPSCs were directly seeded onto the material surfaces and analyzed by scanning electron microscopy. The chemical composition of the pulp-capping materials was determined by energy-dispersive X-ray and eluates were analyzed by inductively coupled plasma-mass spectrometry. Statistical differences were assessed by analysis of variance and Tukey test (P < .05). Results: Cell viability was moderate after 24 and 48 hours in the presence of MTA Repair HP and NeoMTA Plus, whereas at 48 and 72 hours, Biodentine showed higher rates of cell viability than MTA Repair HP and NeoMTA Plus (P < .001). A cell migration assay revealed adequate cell migration rates for MTA Repair HP and NeoMTA Plus, both similar to the control group rates, meanwhile the highest cell migration rate was observed in the presence of Biodentine (P < .001). Scanning electron microscope studies showed a high degree of cell proliferation and adhesion on Biodentine disks but moderate rates on MTA Repair HP and NeoMTA Plus disks. Energydispersive X-ray pointed to similar weight percentages of C, O, and Ca in all 3 materials, whereas other elements such as Al, Si, and S were also found. Conclusions: The new pulp-capping materials MTA Repair HP, NeoMTA Plus, and Biodentine showed a suitable degree of cytocompatibility with hDPSCs, and good cell migration rates, although Biodentine showed higher rates of proliferation time-dependent.
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    Biological properties of Ceraputty as a retrograde filling material: an in vitro study on hPDLSCs
    (Springer, 2023-05-01) López Garcia, Sergio; Rodríguez Lozano, Francisco Javier; Sanz, José Luis; Forner, Leopoldo; Pecci Lloret, María Pilar; Lozano, Adrián; Murcia, Laura; Sánchez Bautista, Sonia; Oñate Sánchez, Ricardo Elías; Dermatología, Estomatología, Radiología y Medicina Física
    Objectives To assess the cytocompatibility and bioactive potential of the new calcium silicate-based cement Ceraputty on human periodontal ligament stem cells (hPDLSCs) compared to Biodentine and Endosequence BC root repair material (ERRM). Materials and methods hPDLSCs were isolated from extracted third molars from healthy donors. Standardized sample discs and 1:1, 1:2, and 1:4 eluates of the tested materials were prepared. The following assays were performed: surface element distribution via SEM–EDX, cell attachment and morphology via SEM, cell viability via a MTT assay, osteo/cemento/odontogenic marker expression via RT-qPCR, and cell calcified nodule formation via Alizarin Red S staining. hPDLSCs cultured in unconditioned or osteogenic media were used as negative and positive control groups, respectively. Statistical analysis was performed using one-way ANOVA or two-way ANOVA and Tukey’s post hoc test. Statistical significance was established at p < 0.05. Results The highest Ca2+peak was detected from Biodentine samples, followed by ERRM and Ceraputty. hPDLSC viability was significantly reduced in Ceraputty samples (p < 0.001), while 1:2 and 1:4 Biodentine and ERRM samples similar results to that of the negative control (p > 0.05). Biodentine and ERRM exhibited an upregulation of at least one cemento/odonto/osteogenic marker compared to the negative and positive control groups. Cells cultured with Biodentine produced a significantly higher calcified nodule formation than ERRM and Ceraputty (p < 0.001), which were also higher than the control groups (p < 0.001). Conclusion Ceraputty evidenced a reduced cytocompatibility towards hPDLSCs on its lowest dilutions compared to the other tested cements and the control group. Biodentine and ERRM promoted a significantly higher mineralization and osteo/cementogenic marker expression on hPDLSCs compared with Ceraputty. Further studies are necessary to verify the biological properties of this new material and its adequacy as a retrograde filling material.
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    Galangin alleviates gastric mucosal injury in rats with chronic atrophic gastritis by reducing ferroptosis
    (Universidad de Murcia, Departamento de Histología e Histopatología, 2025) Yang Tian; Lu Min; Jiang Weiqiang; Jin Dandan; Sun Meiling; Mao Hua; Han Huixia; Biología Celular e Histología
    Objective. Chronic atrophic gastritis (CAG) is a precancerous lesion and is the first stage in a multistep precancerous cascade that can lead to gastric adenocarcinoma. This study aimed to reveal the role and mechanism of galangin in CAG. Methods. Rats were intragastrically administered a mixture of 2% sodium salicylate and 30% alcohol, forced to exercise, and fasted irregularly to establish CAG models. To explore the efficacy of galangin on CAG rats, we used Hericium erinaceus (HE) and omeprazole (Ome) as controls. The degree of gastric mucosal injury was assessed by H&E staining and immunohistochemistry. Perls staining and western blot analysis were used to assess iron content and enrichment of ferroptosis-related proteins. Reactive oxygen species and mitochondrial superoxide in the mucosa were visualized by probes. The morphology of cells was examined by transmission electron microscopy. Results. Our data showed that galangin treatment alleviated gastric mucosal damage and reduced ferroptosis in CAG rats, manifested as decreased iron content, iron transporters and storage proteins, decreased ROS and mitochondrial superoxide, and partially restored cellular morphology. Of note, galangin at a high concentration had better treatment efficacy than HE but lower than Ome. Conclusions. This study demonstrated that galangin reduced gastric mucosal injury in CAG rats by inhibiting ferroptosis. These findings provide a theoretical basis for its clinical application and broaden its potential applications
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    Health-promoting potential of betalains in vivo and their relevance as functional ingredients: A review
    (Elsevier, 2022-02-13) Martínez-Rodriguez, Pedro; Guerrero Rubio, María Alejandra; Henarejos Escudero, Paula; Gandía Herrero, Fernando; García Carmona, Francisco; Bioquímica y Biología Molecular "A"
    Background: Betalains are phytochemicals of relevance to the food industry not only for their natural presence in foods and beverages but also due to their utility as food colorants. However, the use of betalains as functional ingredients has not been extended despite their demonstrated health-promoting properties. The use of betalains as nutraceuticals is an emerging field thanks to the accumulation of scientific evidence on their beneficial effects on health in humans and animal models. Scope and approach: In this review, all the health-promoting effects of betalains published to date are collected and discussed with a focus on their promising use as functional ingredients. All studies on animal models and humans are critically analyzed. Key findings and conclusions: The bioactive properties of betalains have been manifested in rodents, fish, and nematodes. Chemopreventive, antioxidant, and anti-inflammatory activities are some of the effects produced by betalains in vivo. Assays performed in humans remain limited, but their conclusions are highly promising in terms of the health-promoting potential of betalains, supporting the use of these compounds as functional ingredients.
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    Systematic review on the metabolic interest of glucosinolates and their bioactive derivatives for human health
    (MDPI, 2023-03-15) Núñez Gómez, Vanesa; Costa-Pérez, Antonio; Baenas Navarro, Nieves; Di Pede, Giuseppe; Achour, Mariem; Manach, Claudine; Mena, Pedro; Del Rio, Daniele; García-Viguera, Cristina; Moreno, Diego A.; Domínguez-Perles, Raúl; Tecnología de Alimentos, Nutrición y Bromatología; Facultad de Veterinaria
    In the last decade, most of the evidence on the clinical benefits of including cruciferous foods in the diet has been focused on the content of glucosinolates (GSL) and their corresponding isothiocyanates (ITC), and mercapturic acid pathway metabolites, based on their capacity to modulate clinical, biochemical, and molecular parameters. The present systematic review summarizes findings of human studies regarding the metabolism and bioavailability of GSL and ITC, providing a comprehensive analysis that will help guide future research studies and facilitate the consultation of the latest advances in this booming and less profusely researched area of GSL for food and health. The literature search was carried out in Scopus, PubMed and the Web of Science, under the criteria of including publications centered on human subjects and the use of Brassicaceae foods in different formulations (including extracts, beverages, and tablets), as significant sources of bioactive compounds, in different types of subjects, and against certain diseases. Twenty-eight human intervention studies met inclusion criteria, which were classified into three groups depending on the dietary source. This review summarizes recent studies that provided interesting contributions, but also uncovered the many potential venues for future research on the benefits of consuming cruciferous foods in our health and well-being. The research will continue to support the inclusion of GSL-rich foods and products for multiple preventive and active programs in nutrition and well-being.
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    Thermo-setting glass ionomer cements promote variable biological responses of human dental pulp stem cells
    (2018) Collado-González, Mar; Pecci Lloret, Miguel Ramón; Tomás Catalá, Christopher Joseph; García Bernal, David; Oñate Sánchez, Ricardo Elías; Llena, Carmen; Forner, Leopoldo; Rosa, Vinicius; Rodríguez Lozano, Francisco Javier; Dermatología, Estomatología, Radiología y Medicina Física
    Objective: To evaluate the in vitro cytotoxicity of Equia Forte (GC, Tokyo, Japan) and Ionostar Molar (Voco, Cuxhaven, Germany) on human dental pulp stem cells (hDPSCs). Methods: hDPSCs isolated from third molars were exposed to several dilutions of Equia Forte and Ionostar Molar eluates (1/1, 1/2 and 1/4). These eluates were obtained by storing material samples in respective cell culture medium for 24 h (n = 40). hDPSCs in basal growth culture medium were the control. Cell viability and cell migration assays were performed using the MTT and wound-healing assays, respectively. Also, induction of apoptosis and changes in cell phenotype were evaluated by flow cytometry. Changes in cell morphology were analysed by immunocytofluorescence staining. To evaluate cell attachment to the different materials, hDPSCs were directly seeded onto the material surfaces and analyzed by scanning electron microscopy (SEM). The chemical composition of the materials was determined by energy dispersive X-ray (EDX) and eluates were analyzed by inductively coupled plasma-mass spectrometry (ICP-MS). Statistical analysis was performed with analysis of variance (ANOVA) and Student's t-test (α < 0.05). Results: Undiluted Equia Forte extracts led to a similar cell proliferation rates than the control group from 72 h onwards. There were no significance differences between Equia Forte and Ionostar Molar in terms of cell apoptosis and phenotype. However, in presence of Equia extracts the migration capacity of hDPSCs was higher than in presence of Ionostar Molar (p < 0.05). Also, SEM studies showed a higher degree of cell attachment when Equia Forte extracts were used. Finally, EDX analysis pointed to different weight percentages of C, O and Ca ions in glass ionomer cements, while other elements such as La, Al, Si, W, Mo and F were also detected. Significance: In summary, Equia Forte promoted better biological responses in hDPSCs than Ionostar Molar.