Journal Information
Vol. 34. Issue. 4.July 2014
Pages 425-544
Vol. 34. Issue. 4.July 2014
Pages 425-544
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La genisteína y la proteína de soja mejoran el estado antioxidante renal en el síndrome nefrótico experimental
Soy protein and genistein improves renal antioxidant status in experimental nephrotic syndrome
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Mohammad H. Javanbakhta, Reza Sadriab, Mahmoud Djalalia, Hoda Derakhshaniana, Payam Hosseinzadeha, Mahnaz Zareia, Gholamreza Azizic, Reza Sedaghatd, Abbas Mirshafieyb
a Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics. Tehran University of Medical Sciences, Tehran, Iran,
b Department of Pathobiology, School of Public Health. Tehran University of Medical Sciences, Tehran, Iran,
c Alborz University of Medical Sciences, Imam Hassan Mojtaba Hospital, Karaj, Alborz, Iran,
d Department of Pathology, School of Medicine. Shahed University, Tehran, Iran,
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Antecedentes y objetivos: El síndrome nefrótico es una enfermedad crónica especialmente común en la infancia y la adolescencia. Las especies reactivas del oxígeno (ERO) y los radicales libres desempeñan un papel importante en la patogénesis del síndrome nefrótico. El objetivo de este estudio es evaluar los efectos de la genisteína (principal isoflavona de la soja) y la proteína de soja en el estado antioxidante renal de ratas nefróticas. Métodos: Este estudio se llevó a cabo durante 8 semanas con 40 ratas Sprague-Dawley machos adultas, que fueron divididas en cuatro grupos de 10. Cada uno de los grupos de estudio incluía: 1 control, 2 con síndrome nefrótico, 3 con síndrome nefrótico más una dieta a base de proteína de soja y 4 con síndrome nefrótico más una dieta a base de proteína de soja más genisteína. Se midieron tanto los niveles de proteína como de creatinina en orina. Tras la homogenización del tejido renal, se calcularon mediante espectrofotometría la capacidad antioxidante total (CAT), la actividad de la enzima catalasa, la concentración de malondialdehidos (MDA) y las proteínas carboniladas. El examen patológico de los riñones se realizó con el microscopio óptico. Además, se evaluó la viabilidad celular con un ensayo de MTT de la línea celular de fibrosarcoma WEHI-164. También se evaluó la actividad de la enzima MMP2 con distintas concentraciones de genisteína. Resultados: La capacidad antioxidante total aumentó significativamente en las ratas que tenían una dieta de genisteína, al igual que la actividad de la catalasa en aquellas con una dieta de soja y genisteína. En cambio, los grupos carbonilo de las proteínas y los niveles de MDA fueron significativamente inferiores en los animales con una dieta de soja y de genisteína. El examen patológico reveló una mejora significativa en los grupos con dietas de soja y de genisteína. Asimismo, la genisteína disminuyó la proliferación de la línea celular de fibrosarcoma WEHI-164. Conclusión: Parece ser que la proteína de soja reduce los daños renales causados por el síndrome nefrótico. La adición de genisteína a la proteína de soja produce mejoras en el estado antioxidante del tejido renal. La genisteína disminuye la proliferación celular.

Palabras clave:
Soja
Palabras clave:
Síndrome nefrótico
Palabras clave:
Antioxidante
Palabras clave:
Rata
Palabras clave:
Genisteína

Background and objectives: Nephrotic syndrome is a chronic disease especially common in the childhood and adolescence. Reactive oxygen species (ROS) and free radicals have significant role in the pathogenesis of nephrotic syndrome. The aim of this study was to evaluate the effect of soy protein and genistein (main isoflavone of soybean) on renal antioxidant status of nephrotic rats. Methods: This study was done for 8 weeks on 40 adult male Sprague-Dawley rats divided into four groups of 10 rats each. Study groups included: 1-Control, 2-Nephrotic syndrome, 3-Nephrotic syndrome+soy protein diet and 4-Nephrotic syndrome+soy protein diet+genistein. Urine protein and urine creatinine were measured. After homogenization of kidney, total antioxidant capacities (TAC), activities of catalase enzyme, the concentration of malondialdehydes (MDA) and carbolynated proteins were determined spectrophotometrically. Pathological examination was done on kidneys with light microscope. Cell viability was evaluated with MTT assay on WEHI-164 fibro sarcoma cell line. The MMP2 enzyme activity was evaluated in different concentrations of genistein. Results: Total antioxidant capacity was significantly increased in soy genistein. Catalase activity was significantly increased in soy and soy genistein groups. Protein carbonyl and MDA were significantly lower in soy and soy genistein groups. The scores of pathological examination showed significant improvement in soy and soy genistein groups. Genistein decreased the proliferation of the WEHI-164 fibrosarcoma cell line. Conclusion: It seems that soy protein decreases kidney damages in nephrotic syndrome. Adding genistein to soy protein causes improvements in antioxidant status of kidney tissue. Genistein decreases proliferation of cell.

Keywords:
Soy
Keywords:
Nephrotic Syndrome
Keywords:
Antioxidant
Keywords:
Rat
Keywords:
Genistein
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