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1.
Biochimie ; 185: 1-8, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33713729

RESUMO

Na/K-ATPase (NKA) is a p-type transmembrane enzyme formed by three different subunits (α, ß, and γ gamma). Primarily responsible for transporting sodium and potassium through the cell membrane, it also plays a critical role in intracellular signaling. The activation of diverse intracellular pathways may trigger cell death, survival, or even cell proliferation. Changes in the NKA functions or expression in isoforms subunits impact pathological conditions, such as cancer. The NKA function affects cell adhesion, motility, and migration, which are different in the physiological and pathological states. All enzyme subunits take part in the cell adhesion process, with the ß subunit being the most studied. Thus, herein we aim to highlight NKA' central role in cell adhesion, motility, and migration in cancer cells.


Assuntos
Movimento Celular , Proliferação de Células , Proteínas de Neoplasias/metabolismo , Neoplasias/metabolismo , Transdução de Sinais , ATPase Trocadora de Sódio-Potássio/metabolismo , Adesão Celular , Humanos , Neoplasias/patologia
2.
J Med Food ; 22(11): 1175-1182, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31290703

RESUMO

This study evaluated the effects of tomato sauce and lycopene on hepatic and cardiac cell biomarkers in rats fed a high-fat diet. Animals were split into five groups: control group, high-fat group (HG), high-fat tomato sauce group, high-fat lycopene 2 mg, and high-fat lycopene 4 mg. Food and water were offered ad libitum, whereas tomato sauce and lycopene (2 and 4 mg/day) were offered daily for 60 days. Body, heart, and liver weights, cardiosomatic and hepatosomatic indices, and serum parameters were also analyzed in rats. The animals' hearts and liver were processed, and cells were examined by flow cytometry. Results showed that the groups receiving tomato sauce and lycopene had lower glycemia. The serum concentration of high-density lipoprotein cholesterol, hepatic enzymes, and tumor necrosis factor-α did not change upon treatment. Tomato sauce and lycopene supplementation did not increase interleukin-1ß in response to a high-fat diet. Cell cycle analysis of cardiac and liver cells showed a lower percentage of cells in the G0/G1 phase and an increase in the G2/M phase in HG. Both lycopene and tomato sauce reversed this effect. Both lycopene and tomato sauce reversed this effect and prevented high-fat diet-stimulated cardiac and liver cell death. Supplementation of tomato sauce and lycopene showed beneficial effects on cardiac and liver cell metabolism; therefore, it is suggested as a nutritional approach for the prevention and treatment of cardiovascular diseases and nonalcoholic hepatic steatosis.


Assuntos
Fígado/metabolismo , Licopeno/farmacologia , Miocárdio/metabolismo , Solanum lycopersicum/química , Animais , Apoptose , Biomarcadores , Doenças Cardiovasculares , Ciclo Celular , HDL-Colesterol/sangue , Dieta Hiperlipídica , Feminino , Hepatopatia Gordurosa não Alcoólica , Ratos , Ratos Wistar , Fator de Necrose Tumoral alfa/metabolismo
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