Sample records for ACIDO TANICO (tannic acid)
from WorldWideScience.org

Sample records 1 - 14 shown.



1

Efecto de polifenoles de la dieta mediterránea sobre la proliferación y mediadores de la invasividad "in vitro" de la línea de cáncer vesical murino MB-49/ Effect of polyphenols in the mediterranean diet on proliferation and mediators of in vitro invasiveness of the mb-49 murine bladder cancer cell line

García Mediero, J.M.; Ferruelo Alonso, A.; Páez Borda, A.; Luján Galán, M.; Angulo Cuesta, J.; Chiva Robles, V.; Berenguer Sánchez, A.
2005-09-01

Resumen en español Objetivo: Evaluar el efecto de diferentes polifenoles sobre la proliferación y algunos mediadores implicados en el proceso de invasividad en la línea celular MB-49. Material y Métodos: Cultivos de células de cáncer vesical murino MB-49 se suplementaron con resveratrol, rutina, morina, quercetina y ácidos tánico y gálico, a diferentes concentraciones y se determinó la proliferación celular a las 24, 48 y 72 horas. Por otra parte, se cuantificó la expresión del (mas) activador del plasminógeno tipo Urokinasa (u-PA) y de su receptor (u-PAR), así como de la metaloproteinasas 9 (MMP-9) mediante PCR en tiempo real tras 24h de tratamiento con cada nutriente. Además, se valoró en el medio de cultivo, también tras 24 horas de incubación con los diferentes nutrientes, los niveles de MMP-9. Resultados: Todos los polifenoles estudiados consiguieron inhibir la proliferación de las células MB-49 de manera significativa, variando en los tiempos y dosis empleados. La expresión de del activador del plasminógeno tipo Urokinasa (u-PA) y de su receptor de alta afinidad (u-PAR) no se vieron modificados tras el tratamiento, siendo en algún caso ligeramente aumentada su expresión. Sin embargo, si se inhibió de manera significativa tanto la expresión como los niveles en el medio de cultivo de la MMP-9. Conclusiones: Los polifenoles de nuestra dieta habitual ejercen un efecto inhibidor sobre la proliferación y los mediadores de la invasividad tumoral vesical en células MB-49. Resumen en inglés Objective: To evaluate the effect of different polyphenols on the proliferation and invasive capacity of MB-49 murine bladder tumor cell lines and to identify the mediators involved in this process. Materials and Methods: MB-49 murine bladder cancer cells were cultured in media supplemented with resveratrol, rutin, morin, quercetin, gallic acid and tannic acid (all of them are polyphenols usually present in Mediterranean diet) for periods of 24, 48 and 72 hours to quantif (mas) y the expression of urokinase-type plasminogen activator (uPA) and its receptor (uPAR) in the culture medium, as well as of metalloproteinase-9 (MMP-9) and cell proliferation. Results: All the polyphenols studied significantly inhibited proliferation of MB-49 cells, varying according to the time periods and doses used. The cells in the media supplemented with the nutrients to study did not show inhibition of mRNA expression of urokinase-type plasminogen activator (uPA) or its high affinity receptor (uPAR). It was even slightly increased in certain cases. However, mRNA expression of metalloproteinase-9 was strongly inhibited. Conclusions: The polyphenols present in our usual diet exert an effect on the proliferation and mediators of bladder tumor invasiveness in MB-49 cells.

Scientific Electronic Library Online (Spanish)

2

Ruminal degradability of soya bean meal treated with different doses of tannic acid

Serrano, Emma; Safigueroa, Marcela; Giráldez, Francisco Javier; Mantecón, Ángel R.
1997-01-01

Digital.CSIC (Spain)

4

Free Radical Scavenging Capacity in the Aging of Selected Red Spanish Wines

Larrauri, José A.; Sánchez-Moreno, Concepción; Rupérez Antón, Pilar; Saura Calixto, Fulgencio D.
1999-04-01

Digital.CSIC (Spain)

5

Effects of the use of heather as anthelmintic in goats infected with Trichostrongylus colubriformis on ruminal fermentation and digestibility

Frutos, Pilar; Hervás, Gonzalo; Celaya, Rafael; Moreno Gonzalo, Javier; Rodríguez, Ana Belén; García, Urcesino; Ferre, Ignacio; Ortega Mora, Luis M.; Osoro, Koldo
2009-10-01

Digital.CSIC (Spain)

6

Effect of two types of tannin, in the presence or absence of PEG, on in vitro rumen fermentation in goats

Hervás, Gonzalo; Álvarez del Pino, María C.; Giráldez, Francisco Javier; Mantecón, Ángel R.; Frutos, Pilar
2001-01-01

Digital.CSIC (Spain)

7

Effect of tannic acid on rumen degradation and intestinal digestion of treated soya bean meals in sheep

Hervás, Gonzalo; Frutos, Pilar; Serrano, Emma; Mantecón, Ángel R.; Giráldez, Francisco Javier

http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=60689&fulltextType=RA&fileId=S0021859699008151. | Previously published as proceeding at the XXIX Jornadas de Estudio AIDA (VII Jornadas sobre Producción Animal) (Zaragoza, Spain, May 20-22, 1997). https://digital.csic.es/handle...

DRIVER (Spanish)

8

Effect of tannic acid on rumen degradation and intestinal digestion of treated soya bean meals in sheep

Hervás, Gonzalo; Frutos, Pilar; Serrano, Emma; Mantecón, Ángel R.; Giráldez, Francisco Javier
2000-01-01

Digital.CSIC (Spain)

9

Comparison of biological and chemical methods, and internal and external standards, for assaying tannins in Spanish shrub species

Álvarez del Pino, María C.; Hervás, Gonzalo; Mantecón, Ángel R.; Giráldez, Francisco Javier

8 pages, 1 figure, 4 tables.-- Available online 26 Nov 2004. | Previously published as proceeding at the XXXIII Jornadas de Estudio AIDA (IX Jornadas sobre Producción animal). ITEA vol. Extra 22 (Zaragoza, Spain, May 25-27, 2001). https://digital.csic.es/handle/10262/14433 | Previously published as ...

DRIVER (Spanish)

10

Comparison of biological and chemical methods, and internal and external standards, for assaying tannins in Spanish shrub species

Álvarez del Pino, María C.; Hervás, Gonzalo; Mantecón, Ángel R.; Giráldez, Francisco Javier
2005-01-01

Digital.CSIC (Spain)

11

Cement content determination through selective stain in hardened concrete

Linares Fernández, Lucía; López de Atalaya Alberola, María del Mar; Chinchón Yepes, Servando

A cement quantification method has been developed in Ø 15 × 30 cm concrete specimens applying selective stain. A tannic acid–tartaric acid solution was used to stain the cement paste. This paper explains the procedure to determine the quantity of cement in the samples: the reagents utilised for the ...

DRIVER (Spanish)

12

An in vitro study on the ability of polyethylene glycol to inhibit the effect of quebracho tannins and tannic acid on rumen fermentation in sheep, goats, cows, and deer

Frutos, Pilar; Hervás, Gonzalo; Giráldez, Francisco Javier; Mantecón, Ángel R.

8 pages. | Batch cultures of rumen microorganisms, using rumen fluids from 4 ruminant species, sheep, goats, cows, and deer, were used to study the ability of polyethylene-glycol (PEG 6000) to inhibit the effect of 2 types of tannins, quebracho (QUE, a condensed tannin) and tannic acid (TA, a hydrol...

DRIVER (Spanish)

14

A procedure to measure the antiradical efficiency of polyphenols

Sánchez-Moreno, Concepción; Larrauri, José A.; Saura Calixto, Fulgencio D.
1998-02-01

Digital.CSIC (Spain)