Your browser doesn't support javascript.
Mostrar: 20 | 50 | 100
Resultados 1 - 4 de 4
Mais filtros

Base de dados
Intervalo de ano de publicação
Braz J Biol ; 83: e248746, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34495165


Colorectal cancer (CRC) is one of the most common cancers leading to comorbidities and mortalities globally. The rational of current study was to evaluate the combined epigallocatechin gallate and quercetin as a potent antitumor agent as commentary agent for therapeutic protocol. The present study investigated the effect of epigallocatechin Gallate (EGCG) (150mg) and quercetin (200mg) at different proportions on proliferation and induction of apoptosis in human colon cancer cells (HCT-116). Cell growth, colonogenic, Annexin V in addition cell cycle were detected in response to phytomolecules. Data obtained showed that, the colony formation was inhibited significantly in CRC starting from the lowest concentration tested of 10 µg/mL resulting in no colonies as visualized by a phase-contrast microscope. Data showed a significant elevation in the annexin V at 100 µg/mL EGCG(25.85%) and 150 µg/mL quercetin (48.35%). Moreover, cell cycle analysis showed that this combination caused cell cycle arrest at the G1 phase at concentration of 100 µg/mL (72.7%) and 150 µg/mL (75.25%). The combined effect of epigallocatechin Gallate and quercetin exert antiproliferative activity against CRC, it is promising in alternative conventional chemotherapeutic agent.

Catequina , Neoplasias Colorretais , Anexina A5 , Catequina/análogos & derivados , Catequina/farmacologia , Ciclo Celular , Linhagem Celular Tumoral , Proliferação de Células , Neoplasias Colorretais/tratamento farmacológico , Humanos , Quercetina/farmacologia
Folia Morphol (Warsz) ; 78(2): 274-282, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30106462


BACKGROUND: L-carnitine and vitamin E have antioxidant properties. This study aimed to assess the effectiveness of L-carnitine, vitamin E and their combination in protection against isoproterenol (ISO)-induced biochemical and histopathological changes in rat heart. MATERIALS AND METHODS: Fifty male Wistar rats assigned to five groups; control, ISO-treated group (100 mg/kg), ISO + vitamin E-treated group (100 IU/kg), ISO + L-carnitine (100 mg/kg) and ISO + vitamin E + L-carnitine treated group. At the end of the experiment, serum cardiac enzyme as well as the cardiac level malondi- aldehyde (MDA), antioxidant enzymes and inflammatory cytokines interleukin-6, tumour necrosis factor alpha (TNF-a) were assessed. Histopathological changes in the left ventricle wall were assessed using the light and electron microscopy. RESULTS: Treating rats with vitamin E and L-carnitine could alleviate ISO-induced changes as it significantly reduced the serum level cardiac enzymes, MDA and IL-6, TNF-a and improved the antioxidants enzymes (SOD, GSPxase and GSRase). Histopathologically, they improved cardiac fibres atrophy, haemorrhages between cardiac fibres, lost striations, and disturbed sarcomere structure. The combined ef- fect of vitamin E and L-carnitine was more superior compared to the other groups. CONCLUSIONS: Combined administration of vitamin E, L-carnitine ameliorated the biochemical and histopathological cardiac injury induced by ISO. The effect seemed to be mediated through the antioxidant and anti-inflammatory effect of vitamin E, L-carnitine. Administration of these two elements is recommended for patient at risk for myocardial infarction.

Cardiotônicos/farmacologia , Carnitina/farmacologia , Miocárdio/patologia , Vitamina E/farmacologia , Animais , Antioxidantes/metabolismo , Isoproterenol , Masculino , Malondialdeído/metabolismo , Miocárdio/enzimologia , Miocárdio/ultraestrutura , Ratos Wistar
Folia Morphol (Warsz) ; 78(1): 91-100, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30106463


BACKGROUND: Red grape juice (RGJ) and dark raisins (DR) are rich in polyphenols and antioxidants. This study aimed to assess the efficacy of RGJ and DR in protec- ting the renal tubules against hypercholesteraemic-induced pathological changes. MATERIALS AND METHODS: Forty albino rats divided into four groups (n = 10) were utilised in this study. They included the control, high cholesterol diet (HCD)-fed, HCD+RGJ-fed, and HCD+DR-fed groups. Body weight gain, food and water in- take, blood and insulin levels, lipid profile and kidney functions were assessed at the start of the experiment and after 12 weeks. The right kidney was dissected out and processed for both light and electron microscopic examination. Desmin and cytokeratin antibodies were utilised as histologic markers to assess the integrity of the proximal (PTs) and distal tubules (DTs) of the kidney. RESULTS: Administration of HCD resulted in hypercholesterolaemia in rats as evi- denced by the lipid profile. The PTs of hypercholesteraemic rats appeared dilated with hyaline casts and mitochondria in most of the tubular cells were affected. Immunohistochemical assessment revealed affection of both PTs and DTs. Both RGJ and DR, when administered along with the HCD for 12 weeks, improved the lipid profile, kidney functions as well as the histologic and cellular changes-induced by hypercholesterolaemia in the rats. The effect of raisins was superior to RGJ which might be due to its high contents of fibres and proteins. CONCLUSIONS: This study highlighted the importance of supplementation of red grape and raisins in protection against the harmful effects induced by deposition of fat on the renal tubules' structure and function.

Hipercolesterolemia/complicações , Túbulos Renais/patologia , Vitis , Animais , Antioxidantes/farmacologia , Dieta , Dieta Hiperlipídica/efeitos adversos , Masculino , Ratos , Ratos Wistar
Afr Health Sci ; 16(1): 319-24, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-27358648


OBJECTIVE: Coronary artery diseases including atherosclerosis is considered as commonest problem worldwide. Ergosterols are the main components of vegetable oils and nuts. The objective of this study was to evaluate the potential hypoplipidemic and hypocholesterolemic effects of ergosterol in combination with niacin in rats fed high fat diet (HFD). METHODS: Eighty male albino rats were included in this study divided into two main groups: Group I: Normal rats fed standard diet treated with either niacin (8.5 mg /kg b.w) or ergosterol (100 mg/Kg b.w) or both. Group II; rats fed HFD treated with either niacin (8.5 mg /kg b.w) or ergosterol (100 mg/Kg b.w) or both The feeding and treatment lasted for 8 weeks. RESULTS: A significant elevation in the levels of total cholesterol, triacylglycerol, VLDL-c, LDL-c and atherogenic factor (p<0.001) in rats fed on HFD compared with normal control while HDL-c was significantly reduced in HFD rats compared with control group. Supplementation of diet with niacin or ergosterol or combined exerts improvement in the studied parameters by lowering triacylglycerol, total cholesterol, LDL-c and atherogenic factor and elevate HDL-c near to the value of control. Niacin combined with ergosterol were effective in the reduction of hydroxy methyl glutaryl-CoA reducatase (HMGCoA) compared with control (p<0.001). The combined effect was more potent than individual alone. CONCLUSION: Utilization of niacin and ergosterol may prevent the hypercholesterolemia and incidence of coronary heart diseases. These functional foods act as nutriceutical as dyslipidemics.

Ergosterol/farmacologia , Hidroximetilglutaril-CoA Redutases/efeitos dos fármacos , Hipolipemiantes/farmacologia , Niacina/farmacologia , Animais , Anticolesterolemiantes/farmacologia , Colesterol/sangue , Dieta Hiperlipídica , Suplementos Nutricionais , Masculino , Ratos , Triglicerídeos/sangue