The exercise-dependent attenuation of the effects of MSG confirms our previous results in rats treated subcutaneously with MSG. CSD results suggest two distinct mechanisms for gavage and topical MSG administration. Additionally, data suggest that exercise can help protect the developing and adult brain against the deleterious actions of MSG.
1 Nutrientes e compostos bioativos na modulação epigenética associada à prevenção e combate ao câncer Nutrients and bioactive compounds in epigenetic modulation associated with prevention and combat cancer Nutrientes y compuestos bioactivos en modulación epigenética asociados a la prevención y al cáncer de combate Resumo Os componentes presentes em alguns alimentos tem a capacidade de influenciar diretamente o processo saúde-doença por meio de mecanismos moleculares epigenéticos, reduzindo o risco de desenvolvimento de algumas doenças, sobretudo as Doenças Crônicas Não Transmissíveis (DCNTs), como o câncer. Nesse sentido, o presente estudo busca elucidar o papel de alguns nutrientes e compostos bioativos dos alimentos na modulação epigenética como forma de prevenção e combate ao câncer. Para tanto, foi realizada uma busca sistemática nas bases de dados LILACS, PubMed e BVS. Foram utilizados os descritores: Epigenômica, Compostos Research, Society and Development, v. 9, n. 4, e114942914, 2020 (CC BY 4.0) | ISSN 2525-3409 | DOI: http://dx.doi.org/10.33448/rsd-v9i4.2914 2 Fitoquímicos, Neoplasias e Nutrientes, todos selecionados de acordo com os Descritores em Ciências da Saúde e utilizados nos idiomas: Português e Inglês. Inicialmente foram encontradas 3177 publicações e após a aplicação dos critérios de inclusão e exclusão prédefinidos, restaram 9 publicações pertinentes para construção do trabalho. Verificou-se a partir da literatura selecionada, que alguns nutrientes e compostos bioativos, tais como a Curcumina do açafrão da terra, o Sulforafano e o Isotiocianato de Fenetil (PEITC) dos vegetais crucíferos, o Resveratrol (RES) das uvas vermelhas e do vinho, o β-caroteno dos vegetais alaranjados, a Vitamina C das frutas cítricas e alguns fitoquímicos, como a Quercetina e o Ácido cafeico, desempenham importante papel no combate ao câncer, pois, dentre outros benefícios, eles podem estimular epigenéticamente a expressão gênica de fatores preventivos, como também podem inibir a expressão de fatores ligados à metástase e progressão da patologia já instalada. Por fim, percebe-se que a influência que alguns alimentos tem sobre a expressão gênica representa uma importante ferramenta contra o câncer, sobretudo em relação à prevenção. No entanto, se faz necessário a realização de estudos mais detalhados em relação à doses e possíveis efeitos maléficos. Palavras-chave: Epigenômica; Compostos Fitoquímicos; Neoplasias; Nutrientes. AbstractThe components present in some foods have the ability to directly influence the health-disease process through epigenetic molecular mechanisms, reducing the risk of developing some diseases, especially Chronic Non-Communicable Diseases (NCDs), such as cancer. In this sense, the present study seeks to elucidate the role of some nutrients and bioactive compounds in food in epigenetic modulation as a way of preventing and fighting cancer. For that, a systematic search was performed in the LILACS, PubMed and BVS databases. The descriptors were used: Epigenomics, Phytochemical Compounds, Neoplasm...
Objectives:To compare the effect of the consumption of buriti oil and soybean oil on the metabolism of rats under stress induced by iron overload. Materials and methods: A total of 28 rats were randomized into control groups who consumed diet added of soybean (CS) or buriti oil (CB) and gavage with saline and two experimental groups who consumed diet added of soybean (ES) or buriti oil (EB) and daily gavage with iron II sulfate as stress inducer. The fatty acid profile of diets was analyzed. Body weight and diet consumption were evaluated every two days. The lipid profile and liver weight of animals were evaluated at the end of the experiment. Results: Diet added of soybean oil showed higher percentage of polyunsaturated fatty acids (45.6%) and diet with buriti oil was rich in monounsaturated fatty acids (66.9%). There were no differences in food intake, total cholesterol, HDL-cholesterol and LDL-cholesterol among groups (p > 0.05). However, animals fed with diet supplemented with buriti oil showed intermediate triglyceride levels (CB: 65 mg/dL; EB: 68.7 mg/dL) compared to ES group (102.5 mg/dL). The liver of rats from the CS group had higher weight (2.06 ± 0.2 g) compared to the CB group (1.56 ± 0.1 g). Conclusion: Buriti oil consumption was able to minimize some changes related to iron overload. Arch Endocrinol Metab. 2015;59(5):422-7
This study tested the hypothesis that naturally and industrially produced trans-fatty acids can exert distinct effects on metabolic parameters and on gut microbiota of rats. Wistar rats were randomized into three groups according to the diet: CONT-control, with 5% soybean oil and normal amount of fat; HVF-20% of hydrogenated vegetable fat (industrial); and RUM-20% of ruminant fat (natural). After 53 days of treatment, serum biochemical markers, fatty acid composition of liver, heart and adipose tissue, histology and hepatic oxidative parameters, as well as gut microbiota composition were evaluated. HVF diet intake reduced triglycerides (≈ 39.39%) and VLDL levels (≈ 39.49%). Trans-fatty acids levels in all tissue were higher in HVF group. However, RUM diet intake elevated amounts of anti-inflammatory cytokine IL-10 (≈ 14.7%) compared to CONT, but not to HVF. Furthermore, RUM intake led to higher concentrations of stearic acid and conjugated linoleic acid in all tissue; this particular diet was associated with a hepatoprotective effect. The microbial gut communities were significantly different among the groups. Our results show that ruminant fat reversed the hepatic steatosis normally caused by high fat diets, which may be related to the remodelling of the gut microbiota and its anti-inflammatory potential.
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