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1.
Molecules ; 27(8)2022 Apr 11.
Article in English | MEDLINE | ID: mdl-35458657

ABSTRACT

Quince (Cydonia oblonga Mill.) is a potential source of polyphenolic compounds related with beneficial biological processes. In this study polyphenols from quince fruit were extracted with aqueous acetone at different ratios. A polyphenol profile was identified and quantified by LC-ESI-QqQ. The antioxidant capacity (ORAC and DPPH) and anti-inflammatory effect (inhibition of COX-2 cyclooxygenase) were evaluated in vitro. The results indicated an effect of the aqueous acetone ratio on the extraction of polyphenolic compounds. The higher extraction yields of polyphenolic compounds were attained with 60-75% aqueous acetone. However, extracts obtained with 85% aqueous acetone promoted higher antioxidant and anti-inflammatory effects. Optimal scaling analysis indicated that hydroxycinnamic acids (quinic and chlorogenic), hydroxybenzoic acids (vanillic and syringic), flavonoids (quercetin and kaempferol), dihydrochalcones (neohesperidin) and flavones (acacetin) are related to the antioxidant activity of quince. While phenolic acids, flavonols (kaempferol-3-O-glucoside and rutin) and flavanols (epicatechin) generated the anti-inflammatory effect by inhibiting 52.3% of the COX-2 enzyme. Therefore, a selective extraction of phenolic mix can reduce oxidative stress or inflammatory processes. This suggests the use of quince as a natural source with significant nutraceutical potential.


Subject(s)
Rosaceae , Acetone/analysis , Anti-Inflammatory Agents/analysis , Anti-Inflammatory Agents/pharmacology , Antioxidants/chemistry , Cyclooxygenase 2 , Dietary Supplements/analysis , Flavonoids/analysis , Flavonoids/pharmacology , Fruit/chemistry , Hydroxybenzoates/analysis , Plant Extracts/chemistry , Polyphenols/chemistry , Rosaceae/chemistry
2.
Cient. dent. (Ed. impr.) ; 18(3): 145-152, jun.-jul. 2021. ilus, graf
Article in Spanish | IBECS | ID: ibc-217145

ABSTRACT

La biocompatibilidad de los cementos selladores es una característica que debe tenerse en cuenta, ya que podría influir en el resultado del tratamiento de conductos. El objetivo de este estudio fue analizar la citotoxicidad de los cementos selladores a base de silicatos BioRoot® RCS y Nano-ceramic Sealer®, y el sellador a base de resina epóxica AH Plus Jet®, así como su respuesta inflamatoria asociada en fibroblastos humanos. Se seleccionaron 36 dientes unirradiculares, se instrumentaron y obturaron con los selladores seleccionados. A continuación, se pusieron en contacto con el medio de cultivo para obtener los medios acondicionados a las 24, 48 y 72 horas. Los medios acondicionados obtenidos fueron cultivados con la línea celular de fibroblastos L-132. La viabilidad de las células se evaluó mediante el ensayo del bromuro de 3-(4,5-dimetiltiazol-2-il)-2,5 difenil tetrazolio (MTT). La respuesta inflamatoria se analizó mediante la medición de los niveles de IL-6 determinados a través del ensayo ELISA (ensayo por inmunoabsorción ligado a enzimas) y mediante los niveles de nitrito (ensayo de fluorescencia). Todos los selladores mostraron un cierto grado de citotoxicidad durante el tiempo de evaluación, mientras que sólo el BioRoot® RCS desencadenó una respuesta pro-inflamatoria. Es necesario seguir investigando para evaluar otros aspectos de la biocompatibilidad de los cementos selladores a base de silicato. (AU)


Biocompatibility of sealers is a feature to be taken into account as it might influence the outcome of the treatment. The aim of this study was to analyze the cytotoxicity of the silicate-based root canal sealers BioRoot™ RCS and Nanoceramic Sealer™and the epoxy-resin based sealer AH Plus Jet™, as well as their associated inflammatory response in human fibroblast. Thirty-six human teeth were selected, prepared, filled with the selected sealers and put in contact with culture medium to obtain extracts at 24, 48 and 72 hours. Then, the extracts were cultured with the L-132 fibroblast cell line. Cell viability was evaluated using the 3-(4,5-dimethylthiazol-2-yl)-2,5 diphenyl tetrazolium bromide (MTT) assay. Inflammatory response was analyzed by measuring IL-6 levels determined by ELISA and nitrite levels (fluorescence assay). All sealers showed a certain degree of cytotoxicity during the evaluation time, while only the BioRoot™ RCS triggered a pro-inflammatory response. Further research is needed to assess other aspects of biocompatibility of silicate-based root canal sealers. (AU)


Subject(s)
Humans , Dental Cements/pharmacology , Dental Cements/toxicity , Calcarea Silicata/toxicity , Inflammation , Root Canal Obturation
3.
Nutr Hosp ; 36(Spec No3): 35-39, 2019 Aug 27.
Article in Spanish | MEDLINE | ID: mdl-31368330

ABSTRACT

INTRODUCTION: In recent years, the advance in gut microbiota knowledge has shown that is key in the development and health status of humans. There are many factors that influence the gut microbiota and its balance, being our lifestyle one of the key factors. There is an association between feeding and practicing physical exercise. People who have an active life have a healthier diet, richer in fiber, vegetables and fruits, while sedentary lifestyle is associated with diets with higher fat content and lower fiber. Our feeding behavior and the practice of physical exercise, determine the microbial diversity, as well as the presence of beneficial bacteria for our health. The influence of these factors is determined by the physiological state of the individual (illness/health, obese/lean, young/old), thus more research is needed to determine how changes occur in the microbiota depending on the individual in order to be able to move towards customized nutrition and exercise recommendations according to the needs of each individual.


INTRODUCCIÓN: En los últimos años, el avance en el conocimiento de la microbiota intestinal nos ha demostrado que es clave en el desarrollo y en el estado de salud del ser humano. Son numerosos los factores que influyen sobre la microbiota intestinal y su equilibrio, y nuestro estilo de vida es uno de los factores claves. Existe una asociación entre la alimentación y la práctica de ejercicio físico. Las personas que tienen una vida activa tienen, además, una alimentación más saludable, más rica en fibra, verduras y frutas, mientras que el sedentarismo se asociada al consumo de dietas con mayor contenido de grasa y poca fibra. Nuestro estilo de vida, entendido como alimentación y realización de ejercicio físico, determina la diversidad microbiana, así como la presencia de bacterias beneficiosas para nuestra salud. La influencia de estos factores está determinada por el estado del individuo (enfermedad/salud, obeso/delgado, joven/anciano), por lo que es necesaria más investigación para determinar cómo se producen los cambios en la microbiota en función del individuo, con el fin de poder avanzar hacia una nutrición y unas recomendaciones de ejercicio personalizadas acordes a las necesidades de cada persona.


Subject(s)
Diet, Healthy , Exercise/physiology , Gastrointestinal Microbiome/physiology , Gastrointestinal Tract/microbiology , Life Style , Dietary Fiber/microbiology , Humans , Sedentary Behavior
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