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1.
Cell Mol Biol (Noisy-le-grand) ; 70(2): 257-263, 2024 Feb 29.
Artículo en Inglés | MEDLINE | ID: mdl-38430013

RESUMEN

Granulosa cells are somatic cells located inside follicles that play a crucial role in the growth and development of follicles. Quercetin and tanshinone are two key monomers in traditional Chinese medicine that have antioxidant and anti-aging properties. The KGN cell apoptosis model caused by triptolide (TP) was employed in this work to investigate granulosa cell death and medication rescue. Quercetin and tanshinone therapy suppressed KGN cell death and oxidation while also regulating the expression of critical apoptosis and oxidation-related markers such as B-cell lymphoma-2 (Bcl-2) and Bcl-2-associated X protein (Bax). Further research revealed that the effects of Quercetin and Tanshinone were accomplished via deacetylation of FOXO3A in the cytoplasm and mitochondria via the SIRT1/SIRT3-FOXO3a axis. In summary, Quercetin and tanshinone protect KGN cells from apoptosis by reducing mitochondrial apoptosis and oxidation via the SIRT1/SIRT3-FOXO3a axis.


Asunto(s)
Abietanos , Sirtuina 3 , Femenino , Humanos , Apoptosis , Autofagia/efectos de los fármacos , Mitocondrias/efectos de los fármacos , Quercetina/farmacología , Sirtuina 1/efectos de los fármacos , Sirtuina 1/metabolismo , Sirtuina 3/efectos de los fármacos , Sirtuina 3/metabolismo , Proteína Forkhead Box O3/efectos de los fármacos
2.
J Control Release ; 95(3): 381-9, 2004 Mar 24.
Artículo en Inglés | MEDLINE | ID: mdl-15023450

RESUMEN

A multifunctional and multiple unit system, which contains versatile mini-tablets in a hard gelation capsule, is developed by preparing Rapid-release Mini-Tablets (RMTs), Sustained-release Mini-Tablets (SMTs), Pulsatile Mini-Tablets (PMTs), and Delayed-onset Sustained-release Mini-Tablets (DSMTs), each with various lag times of release. Based on the combinations of mini-tablets, multiplied pulsatile drug delivery system (DDS), site-specific DDS, slow/quick DDS, quick/slow DDS, and zero-order DDS could be obtained. Velocity-time curve, instead of the cumulative percentage drug release profile, is plotted. The nonlinear least square model fit program is applied to process the velocity data of dissolution. The test curves coincided with the theoretical curves from simple summation of v-t equations of individual mini-tablets. Therefore, the programmed DDS can be predicted by adding the v-t equations of various mini-tablets to calculate the theoretical equations and be implemented.


Asunto(s)
Cápsulas/administración & dosificación , Sistemas de Liberación de Medicamentos/métodos , Sistemas de Liberación de Medicamentos/tendencias , Comprimidos/administración & dosificación , Administración Oral , Algoritmos , China , Evaluación Preclínica de Medicamentos/métodos , Tecnología Farmacéutica/métodos , Factores de Tiempo
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