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1.
Braz J Biol ; 82: e268250, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36651459

RESUMEN

Although Annona squamosa Linn. (Annonaceae) has been used in traditional medicine and is known to have several pharmacological properties, its impact on EGFR kinase has not been fully investigated. An assay (biochemical) was used to govern the potential of different A. squamosa seed extracts to scavenge free radicals in petroleum ether, acetone, ethanol, and methanol. We also tested A. squamosa leaf extracts for their ability to inhibit the growth of HEK 293, MCF7, and HepG2 cell lines. The PSE, ASE, ESE, and MSE all contained anti-cancer substances like anethole, cyclopentane, 1,1,3-trimethyl, and phosphonate oxide tributyl, according to phytochemical analysis. ESE extracts from A. squamosa seeds have been selected based on free radical generation probabilities, cytotoxicity studies, and phytochemical analysis. Subsequent insilico studies have been conducted, and the results have shown that interactions between compounds present in ESE extracts and the EGFR kinase are what give these compounds their inhibitory effects. Preliminary phytochemical and pharmacological activities were studied and reported. A. squamosa ESE extracts inhibited the growth of MCF7 cells, and a pharmacokinetic study showed that the compounds anethole, cyclopentane, 1,1,3-trimethyl, and phosphonium oxide tributyl had few undesirable side effects. These substances can be used to both prevent and treat cancer diseases.


Asunto(s)
Annona , Antineoplásicos Fitogénicos , Neoplasias , Extractos Vegetales , Humanos , Annona/química , Receptores ErbB/análisis , Células HEK293 , Fitoquímicos/farmacología , Extractos Vegetales/química , Extractos Vegetales/farmacología , Semillas/química , Antineoplásicos Fitogénicos/química , Antineoplásicos Fitogénicos/farmacología
2.
Braz J Biol ; 82: e261874, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36000692

RESUMEN

This study was conducted to evaluate the protective role of extracted natural antioxidants from black rice and their effect on kidney failure and renal cirrhosis caused by ethanol-induced toxicity. Antioxidant activity in terms of total phenol content, flavonoid compounds and anthocyanin, as well as antioxidant capacity, was determined in an extract of black rice. The findings noted that the black rice extract contained high amounts of antioxidant activity and capacity. Total phenolic compounds from black rice extract were fractionated using HPLC and the results showed that ferulic, sinapic, ascorbic, salicylic and coumaric acids were the highest in the extract. Biological experiments were performed on male albino adult rats (40 animals, 10 rats for each group), divided into four groups. After five weeks, kidney functions and protein fractions were assessed. In addition, superoxide dismutase (SOD), glutathione (GSH) and malondialdehyde (MDA) enzyme activities were determined in all groups. The results found that kidney function, total protein, albumin and globulin were affected by renal dysfunction and renal fibrosis in the positive control (PC), whereas groups 3 and 4 noted an improvement in renal function nearly or equal to the healthy rats which were fed on a basal diet. Furthermore, the PC group showed significantly decreased levels of enzymatic antioxidants, namely SOD and GSH with a concomitant elevated MDA level compared with those in the negative rats fed on a basal diet. Groups 3 and 4 also reported improvements in enzyme activity. These results were further supported by histopathological findings which revealed a curative effect in groups 3 and 4, which avoided renal dysfunction and renal fibrosis from ethanol-induced toxicity. From the results, it can be said that the black rice extract with the highest amounts of antioxidants led to improvements in all parameters, especially kidney function, total protein, albumin, and globulin, in addition to enzyme activity. Therefore, black rice can be recommended as a benefit to general health.


Asunto(s)
Enfermedades Renales , Oryza , Albúminas/metabolismo , Albúminas/farmacología , Animales , Antioxidantes/metabolismo , Antioxidantes/farmacología , Etanol/toxicidad , Fibrosis , Glutatión/metabolismo , Glutatión/farmacología , Enfermedades Renales/inducido químicamente , Enfermedades Renales/prevención & control , Masculino , Estrés Oxidativo , Fenoles/farmacología , Extractos Vegetales/farmacología , Extractos Vegetales/uso terapéutico , Ratas , Superóxido Dismutasa/metabolismo , Superóxido Dismutasa/farmacología
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