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1.
Int. j. med. surg. sci. (Print) ; 8(2): 1-12, jun. 2021. graf, ilus
Article in English | LILACS | ID: biblio-1284445

ABSTRACT

Background/aim: Autophagic cell death and apoptosis of tumor cells has become one of the main objectives in cancer treatment, whereas tumor cell lines are mainly used in studies for providing important data for the evaluation of potential anti cancer substances. In this study, our objective was to evaluate morphological and biochemical changes including rate of apoptosis and Alpha Fetoprotein (AFP) levels at different concentrations of Carnosic Acid (CA) on Human Hepatocellular Carcinoma HepG2 Cells.Materials and methods: Human Hepatocellular Carcinoma (7th passage HepG2 cells) Cell lines were cultured on 11 µM D263M schott glass coverslips placed in 12-well plates and were treated with DMSO, 1, 2.5, 5 and 10 µM concentrations of CA for 24, 48 and 72 hours. Morphological and biochemical data were recorded daily including apoptosis rates demonstrated by Caspase 3, Annexin V expressions under inverted light and Immunofluorescence microscopy, then data were analyzed for statistical significance. AFP, albumin and total protein levels were analyzed spectrophotometricaly for biochemical evaluation.Results: Our results showed that CA significantly inhibited HepG2 cell proliferation in a dose and time dependant manner and significantly caused the formation of autophagic vacuoles starting from 5µM and reaching significance at 10 µM concentrations. Significant decrease was observed in AFP when 48 and 72 hours expressions were examined, with the lowest level reached at 72 hours in the 10 µM CA group. Additionally, increase in albumin levels reached significance only in the 48 h group whereas non-significant increases were also observed in 24 h and 72 h groups.Conclusion: Our current study demonstrates significant increase in apoptosis rates by Carnosic Acid mainly at 10µM concentrations, supporting its anticancer effect on HepG2 cells. These findings are also supported by changes in biochemical analyses of Albumin and AFP levels at 10 µM concentrations.


Antecedentes / objetivos: La muerte celular autofágica y la apoptosis de células tumorales se ha convertido en uno de los principales objetivos en el tratamiento del cáncer, mientras que las líneas celulares tumorales se utilizan principalmente en estudios para proporcionar datos importantes para la evaluación de posibles sustancias anticancerígenas. En este estudio, nuestro objetivo fue evaluar los cambios morfológicos y bioquímicos, incluida la tasa de apoptosis y los niveles de alfa fetoproteína (AFP) a diferentes concentraciones de ácido carnósico (CA) en células de carcinoma hepatocelular humano HepG2.Materiales y métodos: Carcinoma hepatocelular humano (HepG2).Las líneas celulares se cultivaron en cubreobjetos de vidrio Schott D263M de 11 µM colocados en placas de 12 pocillos y se trataron con DMSO, concentraciones de CA 1, 2,5, 5 y 10 µM durante 24, 48 y 72 horas. Los datos morfológicos y bioquímicos se registraron diariamente, incluidas las tasas de apoptosis demostradas por Caspasa 3, las expresiones de Anexina V bajo luz invertida y microscopía de inmunofluorescencia, luego se analizaron los datos para determinar la significación estadística. Los niveles de AFP, albúmina y proteínas totales se analizaron espectrofotométricamente para evaluación bioquímica.Resultados: Nuestros resultados mostraron que CA inhibió significativamente la proliferación de células HepG2 de una manera dependiente de la dosis y el tiempo y causó significativamente la formación de vacuolas autofágicas comenzando desde 5 µM y alcanzando significancia a concentraciones de 10 µM. Se observó una disminución significativa en la AFP cuando se examinaron las expresiones de 48 y 72 horas, alcanzando el nivel más bajo a las 72 horas en el grupo de CA 10 µM. Además, el aumento en los niveles de albúmina alcanzó significación solo en el grupo de 48 h, mientras que también se observaron aumentos no significativos en los grupos de 24 hy 72 h.Conclusión: Nuestro estudio demuestra un aumento significativo en las tasas de apoptosis por el ácido carnósico principalmente a concentraciones de 10 µM, lo que respalda su efecto anticancerígeno en las células HepG2. Estos hallazgos también están respaldados por cambios en los análisis bioquímicos de los niveles de albúmina y AFP a concentraciones de 10 µM.


Subject(s)
Humans , Carcinoma, Hepatocellular/drug therapy , Abietanes/administration & dosage , Hep G2 Cells/drug effects , Liver Neoplasms/drug therapy , Cell Survival , Cells, Cultured , Apoptosis/drug effects , Microscopy, Fluorescence
2.
Int. j. odontostomatol. (Print) ; 11(4): 411-417, dic. 2017. tab, graf
Article in Spanish | LILACS | ID: biblio-893282

ABSTRACT

RESUMEN: El objetivo de este estudio fue evaluar el efecto de un enjuague oral de extracto acuoso de Rosmarinus Officinalis (romero) sobre la cicatrización de heridas de mucosa oral en sujetos sanos. Veintiocho estudiantes, de sexo masculino, edad promedio de 22 años, fueron reclutados para un estudio de doble ciego en la Facultad de Odontología de la Universidad de Concepción, Chile. Se creó una herida estándar de 3 mm de diámetro en la mucosa palatina, que fue fotografiada durante un período de 21 días para determinar su tamaño por fotoplanimetría. Los voluntarios recibieron enjuagues orales para ser utilizados a diario desde el día de creación de la herida, 3 veces al día, y fueron divididos en grupo control (enjuague placebo) y grupo experimental (enjuague de extracto de romero). El extracto acuoso de Romero fue analizado por HPLC, mostrando un alto contenido de carnosol (83 %) y ácido rosmarínico (65 %). Se observó una disminución significativa en el tamaño de la herida del grupo tratado con enjuague de romero comparado con el tratado con enjuague placebo al día 3 de cicatrización (20 %, p=0,046, Mann-Whitney). Posteriormente no se encontraron diferencias, completándose la cicatrización antes del día 21 para ambos grupos. Los resultados sugieren que el enjuagatorio de extracto acuoso de romero favorece la cicatrización temprana de las heridas, lo que puede deberse a su alto contenido de carnosol y ácido rosmarínico que han demostrado estimular la cicatrización y poseer actividad antimicrobiana.


ABSTRACT: The objective of the study was to evaluate the effect of a mouthrinse containing an aqueous extract of Rosmarinus officinalis (rosemary) on healing wounds of the oral mucosa in healthy subjects. Twenty Eight healthy, non-smoking male students, mean age 22 years, were recruited for a double-blind study at the School of Dentistry of the University of Concepción, Chile. A standard 3mm wound was created on the palate with a punch biopsy. The wounds were photographed to assess healing for 21 days. The subjects were instructed to use a mouthrinse 3 times daily for 21 days, starting the day of wounding, and were divided into a control group (placebo) and an experimental group (rosemary extract). The aqueous rosemary extract used for the mouthrinse had a high content of carnosol (83 %) and rosmarinic acid (65 %) as determined by HPLC. We observed a 20 % reduction in wound size by day 3 in the rosemary mouthrinse group as compared to the placebo mouthrinse group (p=0.04, Mann Whitney). Thereafter, no significant differences in wound closure were observed. Healing was completed by day 21 in both groups. The results suggest that the mouthrinse containing the aqueous rosemary extract stimulates early healing of mucosal wounds. This could be due to the high content of carnosol and rosmarinic acid, which are known for their healing and antimicrobial properties.


Subject(s)
Humans , Male , Young Adult , Rosmarinus/chemistry , Mouth Mucosa/injuries , Wound Healing , Chile , Statistics, Nonparametric , Mouthwashes/therapeutic use
3.
Article in English | IMSEAR | ID: sea-163685

ABSTRACT

The chemical composition of essential oils and essential oil yield obtained from Rosemarinus officinalis (family Lamiaceae) and Lavandula angustifolia (family Lamiaceae) were determined in two harvesting times. Their essential oil was determined by hydro-distillation, and analysed by GC/MS. The results showed that harvesting time had significant effects on the oil content and compositions in both plants. The maximum essential oil percentage was obtained in full flowering stage in rosemary. Also and in lavender maximum linalool percentage (19.2%) was obtained in full flowering, and minimum linalool percentage (0.2%) was shown in the other time. Also the concentration of β – pinene (2.1%), δ-3-carene (1.5%), β – phellandrene (6.6%), Camphor(10.6%), Cryptone (0.8%), α- terpineol (2.3%) and Linalool acetate (1.2%) were higher than befor flowering stage. Therefore the harvesting time have a great importance in the production of essential oil and influenced on the quantity and quality of essential oil. As consequence, the best harvesting time in both medicinal plants was obtained in full flowering stage.

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