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Efects of açai on oxidative stress, ER stress, and infammationrelated parameter...
Carvalho, Mayara Medeiros de Freitas; Lage, Nara Nunes; Paulino, Alice Helena de Souza; Pereira, Renata Rebeca; Almeida, Letícia TrindadeNon-alcoholic fatty liver disease (NAFLD), the most predominant liver disease worldwide, is a progressive condition that encompasses a spectrum of disorders ranging from steatosis to steatohepatitis, and, ultimately, cirrhosis and hepatocellular carcinoma. Although the underlying mechanism is complex and multifactorial, several intracellular events leading to its progression have been identified, including oxid...
Açai improves non-alcoholic fatty liver disease (NAFLD) induced by fructose.
Carvalho, Mayara Medeiros de Freitas; Reis, Larissa Lélis Teixeira; Lopes, Juliana Márcia Macedo; Lage, Nara Nunes; Guerra, Joyce Ferreira da CostaIntroduction: the excessive consumption of fructose can cause liver damage, characteristic of non-alcoholic fatty liver disease (NAFLD) associated with changes in lipid metabolism and antioxidant defenses. Açai, the fruit of Euterpe oleracea Mart., has demonstrated numerous biological activities, including anti-inflammatory, antioxidant, and lipid metabolism modulating action. Objective: we evaluated the benefi...
Araçá (Psidium cattleianum Sabine) ameliorates liver damage and reduces hepatic...
Paulino, Alice Helena de Souza; Viana, Ana Maria Fernandes; Bonomo, Larissa de Freitas; Guerra, Joyce Ferreira da Costa; Lopes, Juliana Márcia MacedoBioactive compounds, present in some foods, act enhancing the endogenous antioxidant system and are proposed as an effective strategy in preventing the changes induced by free radicals in some diseases, such as nonalcoholic fatty liver disease (NAFLD). There has been an increase in the number of studies carried out with the aim of finding natural antioxidant compounds present in fruits, mainly the native fruits...
Efeito protetor do açaí (Euterpe oleracea Mart.) sobre a esteatose hepática, re...
Guerra, Joyce Ferreira da CostaPrograma de Pós-Graduação em Ciências Biológicas. Núcleo de Pesquisas em Ciências Biológicas, Pró-Reitoria de Pesquisa de Pós Graduação, Universidade Federal de Ouro Preto.; A crescente incidência da obesidade e comorbidades associadas está relacionada a um aumento paralelo da Doença Hepática Gordurosa não Alcoólica (NAFLD), uma das mais frequentes causas de doença crônica do fígado da atualidade. A NAFLD repre...
Oxidative stress in Mayaro virus infection.
Camini, Fernanda Caetano; Caetano, Camila Carla da Silva; Almeida, Letícia Trindade; Guerra, Joyce Ferreira da Costa; Silva, Breno de MelloMayaro virus (MAYV) is a neglected tropical arbovirus that causes a febrile syndrome that is sometimes accompanied by incapacitating arthritis/arthralgia. The pathogenesis of MAYV has not been completely defined and oxidative stress mediated by an increase in reactive oxygen species (ROS) and/or depletion of antioxidant defences has been found to contribute to several aspects of viral disease. To investigate wh...
Dietary açai attenuates hepatic steatosis via adiponectin-mediated effects on l...
Guerra, Joyce Ferreira da Costa; Maciel, Poliane Silva; Abreu, Isabel Cristina Mallosto Emerich de; Pereira, Renata Rebeca; Silva, MaísaPolyphenols, especially anthocyanins, have been considered promising for the prevention of nonalcoholic fatty liver disease (NAFLD). This study investigated whether açai (Euterpe oleracea Mart.), a source of anthocyanins and recognized as one of the new “superfruits”, could alleviate high-fat diet (HFD)-induced NAFLD in mice. In HFD mice, aqueous açai extract (AAE) administration (3 g/kg) for six weeks improved...
Hypercholesterolemic diet induces hepatic steatosis and alterations in mRNA exp...
Abreu, Isabel Cristina Mallosto Emerich de; Guerra, Joyce Ferreira da Costa; Pereira, Renata Rebeca; Silva, Maísa; Lima, Wanderson Geraldo deObjetivo: Determinar se uma dieta hipercolesterolemiante induz esteatose hepatica, alterações na expressão de mRNA da NADPH oxidase e nas defesas antioxidantes. Materiais e métodos: Ratas Fischer foram divididas em dois grupos de oito animais de acordo com o tratamento recebido, controle (C) e hipercolesterolemico (H). Aquelas do grupo C foram alimentadas com dieta padrão (AIN-93M) e as do grupo H foram aliment...
Iron dextran increases hepatic oxidative stress and alters expression of genes ...
Silva, Maísa; Guerra, Joyce Ferreira da Costa; Sampaio, Ana Flávia Santos; Lima, Wanderson Geraldo de; Silva, Marcelo Eustáquio; Pedrosa, Maria LúciaThe objective of this study was to investigate the effects of iron dextran on lipid metabolism and to determine the involvement of oxidative stress. Fischer ratswere divided into two groups: the standard group (S),whichwas fed the AIN-93Mdiet, and the standard plus iron group (SI), which was fed the same diet but also received iron dextran injections. Serum cholesterol and triacylglycerol levels were higher in ...
Açaí (Euterpe oleracea Mart.) modulates oxidative stress resistance in Caenorha...
Bonomo, Larissa de Freitas; Silva, David Nunes; Boasquivis, Patrícia Ferreira; Paiva, Franciny Aparecida; Guerra, Joyce Ferreira da CostaAçaí (Euterpe oleracea Mart.) has recently emerged as a promising source of natural antioxidants. Despite its claimed pharmacological and nutraceutical value, studies regarding the effects of açaí in vivo are limited. In this study, we use the Caenorhabditis elegans model to evaluate the in vivo antioxidant properties of açaí on an organismal level and to examine its mechanism of action. Supplementation with ac...
High dietary salt decreases antioxidant defenses in the liver of fructose-fed i...
Dornas, Waleska Claudia Amaral; Lima, Wanderson Geraldo de; Santos, Rinaldo Cardoso dos; Guerra, Joyce Ferreira da Costa; Souza, Melina Oliveira deIn this study we investigated the hypothesis that a high-salt diet to hyperinsulinemic rats might impair antioxidant defense owing to its involvement in the activation of sodium reabsorption to lead to higher oxidative stress. Rats were fed a standard (CON), a high-salt (HS), or a high-fructose (HF) diet for 10 weeks after which, 50% of the animals belonging to the HF group were switched to a regimen of high-fr...