
handle: 10612/26571
[ES] El objetivo de este estudio fue evaluar el efecto protector de las proantocianidinas (ProA) frente al daño inducido por angiotensina II (Ang II) en células H9c2, un modelo in vitro ampliamente utilizado en el estudio de la hipertrofia cardiaca (HC). Se analizó la viabilidad celular mediante el ensayo XTT, la expresión génica de marcadores de apoptosis y antiapoptosis (Bax y Bcl-2, respectivamente), hipertrofia (Anp), regulación génica (Gata4, Hdac1) y respuesta antioxidante (Sod2) mediante qPCR, y la generación de especies reactivas de oxígeno (EROs) con el fluorocromo CellRox. Las ProA mejoraron significativamente la viabilidad celular reducida por Ang II y modularon la expresión de Bax y Bcl-2, lo que indica un posible efecto antiapoptótico. Asimismo, las ProA redujeron la sobreexpresión del gen Anp y normalizaron los niveles de Gata4 y Hdac1, implicados en la reprogramación transcripcional asociada a la HC. Aunque no se obtuvieron resultados válidos en la detección de EROs, se detectó una leve modulación del gen antioxidante Sod2, lo que podría indicar una acción indirecta sobre el estrés oxidativo. En conjunto, los resultados demuestran que las ProA podrían ejercer un efecto protector frente a las alteraciones moleculares asociadas al desarrollo de la HC.
[EN] The aim of this study was to evaluate the protective effect of proanthocyanidins (ProA) against angiotensin II (Ang II)-induced damage in H9c2 cells, a widely used in vitro model for the study of cardiac hypertrophy (CH). Cell viability was analyzed using the XTT assay, gene expression of markers related to apoptosis and anti-apoptosis (Bax and Bcl-2, respectively), hypertrophy (Anp), gene regulation (Gata4, Hdac1), and antioxidant response (Sod2) was analyzed by qPCR, and reactive oxygen species (ROS) generation was determined using the CellRox fluorochrome. ProA significantly improved Ang II-reduced cell viability and modulated the expression of Bax and Bcl-2, indicating a potential antiapoptotic effect. Furthermore, ProA reduced Anp gene overexpression and normalized the levels of Gata4 and Hdac1, which are involved in the transcriptional reprogramming associated with CH. Although no valid results were obtained in the detection of ROS, a slight modulation of the antioxidant gene Sod2 was detected, which could indicate an indirect action on oxidative stress. Overall, the results demonstrate that ProAs could exert a protective effect against the molecular alterations associated with the development of CH.
31 páginas, figuras, tabla, referencias bibliográficas y anexos
Biotecnología, Proantocianidinas, Regulación génica, Biología, Angiotensin II, 2407 Biología Celular, Apoptosis, Estrés oxidativo, Gene regulation, Cardiac hypertrophy, Oxidative stress, Hipertrofia cardiaca, Proanthocyanidins, Angiotensina II
Biotecnología, Proantocianidinas, Regulación génica, Biología, Angiotensin II, 2407 Biología Celular, Apoptosis, Estrés oxidativo, Gene regulation, Cardiac hypertrophy, Oxidative stress, Hipertrofia cardiaca, Proanthocyanidins, Angiotensina II
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