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1.
Food Res Int ; 187: 114417, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38763667

RESUMO

Resistant starch serves as a prebiotic in the large intestine, aiding in the maintenance of a healthy intestinal environment and mitigating associated chronic illnesses. This study aimed to investigate the impact of resistant starch-enriched brown rice (RBR) on intestinal health and functionality. We assessed changes in resistant starch concentration, structural alterations, and branch chain length distribution throughout the digestion process using an in vitro model. The efficacy of RBR in the intestinal environment was evaluated through analyses of its prebiotic potential, effects on intestinal microbiota, and intestinal function-related proteins in obese animals fed a high-fat diet. RBR exhibited a higher yield of insoluble fraction in both the small and large intestines compared to white and brown rice. The total digestible starch content decreased, while the resistant starch content significantly increased during in vitro digestion. Furthermore, RBR notably enhanced the growth of four probiotic strains compared to white and brown rice, displaying higher proliferation activity than the positive control, FOS. Notably, consumption of RBR by high-fat diet-induced obese mice suppressed colon shortening, increased Bifidobacteria growth, and improved intestinal permeability. These findings underscore the potential prebiotic and gut health-promoting attributes of RBR, offering insights for the development of functional foods aimed at preventing gastrointestinal diseases.


Assuntos
Dieta Hiperlipídica , Microbioma Gastrointestinal , Camundongos Endogâmicos C57BL , Obesidade , Oryza , Prebióticos , Amido , Animais , Oryza/química , Microbioma Gastrointestinal/efeitos dos fármacos , Camundongos , Amido/metabolismo , Masculino , Obesidade/metabolismo , Camundongos Obesos , Amido Resistente , Probióticos , Digestão , Bifidobacterium/crescimento & desenvolvimento
2.
Nutrients ; 15(23)2023 Dec 04.
Artigo em Inglês | MEDLINE | ID: mdl-38068865

RESUMO

Prolonged intake of a high-fat diet (HFD) disturbs the composition of gut microbiota, contributing to the development of metabolic diseases, notably obesity and increased intestinal permeability. Thyme (Thymus vulgaris L.), an aromatic plant, is known for its several therapeutic properties. In this study, we explored the potential of thyme extract (TLE) to mitigate HFD-induced metabolic derangements and improve the gut environment. Eight-week-old C57BL/6 mice were administered 50 or 100 mg/kg TLE for eight weeks. Administration of 100 mg/kg TLE resulted in decreased weight gain and body fat percentage, alongside the regulation of serum biomarkers linked to obesity induced by a HFD. Moreover, TLE enhanced intestinal barrier function by increasing the expression of tight junction proteins and ameliorated colon shortening. TLE also altered the levels of various metabolites. Especially, when compared with a HFD, it was confirmed that 2-hydroxypalmitic acid and 3-indoleacrylic acid returned to normal levels after TLE treatment. Additionally, we investigated the correlation between fecal metabolites and metabolic parameters; deoxycholic acid displayed a positive correlation with most parameters, except for colon length. In contrast, hypoxanthine was negatively correlated with most parameters. These results suggest a promising role for thyme in ameliorating obesity and related gut conditions associated with a HFD.


Assuntos
Dieta Hiperlipídica , Obesidade , Animais , Camundongos , Dieta Hiperlipídica/efeitos adversos , Camundongos Endogâmicos C57BL , Obesidade/tratamento farmacológico , Obesidade/etiologia , Extratos Vegetais/farmacologia , Extratos Vegetais/uso terapêutico
3.
Food Chem Toxicol ; 180: 114010, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37652125

RESUMO

The irreversible glycation of proteins produces advanced glycation end products (AGEs) which are triggered to bind the receptor for AGE (RAGE), thereby activating mitogen-activated protein kinase/nuclear factor-κB signaling pathway and stimulating proinflammatory cytokines, ultimately leading to chronic disorders. In this study, we focus the promoting effect of Nε-carboxymethyl-lysine (CML), one of the most dietary AGEs, on non-alcoholic fatty liver disease (NAFLD) and evaluated NAFLD-related biomarkers. Oxidative stress and hepatic steatosis were assessed in oleic acid (OA)-induced HepG2 cells. Using OA-induced HepG2 cells, we show that CML results in oxidative stress and steatosis and drives major changes in hepatic lipid metabolism. Administration of CML exacerbated NAFLD-related symptoms by increasing body and liver weight gain, serum alanine aminotransferase and lipid levels, and insulin resistance in mild high-fat diet-induced mice. Moreover, hepatic histological analysis data, such as staining, western blotting, and RNA-seq, indicate that CML aggravates NAFLD in association with activation of the de novo lipogenesis pathway, consistent with the in vitro assays. Our findings could contribute to model studies related to the prevention and treatment of NAFLD progression due to excessive consumption of dietary AGEs.

4.
Microorganisms ; 11(7)2023 Jul 24.
Artigo em Inglês | MEDLINE | ID: mdl-37513035

RESUMO

Radish (Raphanus sativus L.) greens are consumed as a source of nutrition, and their polysaccharides such as rhamnogalacturonan-I possess certain beneficial properties. This study investigated the prebiotic effects of a radish green polysaccharide (RGP) on gut health and obesity. The prebiotic activity of RGP was evaluated based on the pH changes and short-chain fatty acids (SCFAs) concentration. The results showed that 0.5% RGP had a higher prebiotic activity score than inulin and increased SCFAs production in all five prebiotic strains. Moreover, RGP inhibited fat accumulation in 3T3-L1 adipocytes, indicating its potential to reduce obesity. Overall, these findings suggested that the polysaccharide of radish greens has prebiotic effects and may serve as a beneficial prebiotic for gut health and obesity.

5.
Food Res Int ; 170: 113011, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-37316078

RESUMO

Dietary supplementation with indigestible carbohydrates is known to improve the gut environment and prevent obesity and inflammatory diseases by modulating the gut microbiota. In previous work, we established a method for the production of resistant starch (RS)-enriched high-amylose rice (R-HAR) using citric acid. The present study aimed to evaluate changes in structural characteristics during digestion of R-HAR and its effects on the gut health. A three-step in vitro digestion and fermentation model was used, then, RS content, scanning electron microscopy, and branch chain length distribution were analyzed during in vitro digestion. During the digestion of R-HAR, the RS content increased, and the structure was predicted to have a greater impact on the gut microbiota and gut environment. To study the intestinal health effects of R-HAR, its anti-inflammatory and gut barrier integrity activities were assayed in HFD-induced mice. Intake of R-HAR suppressed colonic shortening and inflammatory responses induced by HFD. Furthermore, R-HAR exhibited gut barrier protective activity with an increase in tight junction protein levels. We determined that R-HAR may be a potentially beneficial intestinal environment improver, which may have various implications in the food industry as rice.


Assuntos
Oryza , Animais , Camundongos , Camundongos Obesos , Amido Resistente , Amilose , Digestão
6.
Food Funct ; 14(1): 292-304, 2023 Jan 03.
Artigo em Inglês | MEDLINE | ID: mdl-36504043

RESUMO

Patients with obesity mostly have metabolic syndrome and this can lead to multiple health problems. In the present study, we evaluated the anti-obesity effect of water-soluble red pepper (Capsicum annuum L.) leaf extract (PLE) on 3T3-L1 adipocytes and high-fat diet (HFD)-fed mice. The adipocyte lipid content was determined using Oil Red O staining, which revealed that 100 µg mL-1 PLE markedly reduced fat accumulation without affecting the cell viability. PLE exhibited high prebiotic activity scores by modulating probiotic strains, contributing to host health improvement. In vivo investigation in HFD-fed mice revealed that PLE supplementation significantly decreased the HFD-induced increases in the body weight, amount of white adipose tissue, and serum triglyceride, total cholesterol, leptin, and insulin levels. Consistent with its effects on reduced lipid droplet formation in the liver, PLE supplementation suppressed the expression of lipid synthesis-related proteins including SREBP-1, FAS, and PPAR-γ in the liver and increased that of PGC-1α, CPT1, and adiponectin in epididymal WAT. PLE treatment improved intestinal barrier function and inflammation and reduced harmful intestinal enzyme activities in the feces. Collectively, these results indicate that PLE inhibits fat accumulation in HFD-fed mice via the suppression of adipogenesis and lipogenesis, suggesting its potential in preventing obesity.


Assuntos
Fármacos Antiobesidade , Capsicum , Animais , Camundongos , Células 3T3-L1 , Adipogenia , Fármacos Antiobesidade/farmacologia , Dieta Hiperlipídica , Lipídeos/farmacologia , Camundongos Endogâmicos C57BL , Obesidade/metabolismo , Extratos Vegetais/farmacologia , PPAR gama/genética , PPAR gama/metabolismo
7.
Food Chem ; 400: 134038, 2023 Jan 30.
Artigo em Inglês | MEDLINE | ID: mdl-36067688

RESUMO

Gellan gum (GG) is an anionic polysaccharide used as an additive in the food industry. However, the effect of GG on gut microbiota regulation and nonalcoholic fatty liver disease (NAFLD) has not yet been investigated. In vitro fermentation experiments have demonstrated that GG promoted the growth of probiotic strains such as Lactiplantibacillus rhamnosus and Bifidobacterium bifidum, producing metabolites beneficial to gut health. In mice, GG reduced hepatic triglyceride content, serum biomarkers, and body fat mass and weight gain induced by a high fat diet. Additionally, GG regulated the gut microbiota including Desulfovibrionales, Deferribacterales, Bacteroidales, and Lactobacillales at the order level and also promoted short-chain fatty acid production. Moreover, GG improved the expression of proteins related to hepatic inflammation and lipid metabolism. Taken together, GG ameliorated NAFLD, possibly by acting on the gut-liver axis via improving the gut health, indicating its potential as a food supplement and/or prebiotic against NAFLD.


Assuntos
Microbioma Gastrointestinal , Hepatopatia Gordurosa não Alcoólica , Animais , Biomarcadores/metabolismo , Dieta Hiperlipídica/efeitos adversos , Ácidos Graxos Voláteis/metabolismo , Fígado/metabolismo , Camundongos , Camundongos Endogâmicos C57BL , Hepatopatia Gordurosa não Alcoólica/genética , Polissacarídeos Bacterianos/farmacologia , Triglicerídeos/metabolismo
8.
Front Nutr ; 9: 916262, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35811971

RESUMO

Background and Aims: Excessive intake of advanced glycation end products (AGEs), which are formed in foods cooked at high temperatures for long periods of time, has negative health effects, such as inflammatory responses and oxidative stress. Nε-(Carboxymethyl)lysine (CML) is one of the major dietary AGEs. Given their generally recognized as safe status and probiotic functionalities, lactic acid bacteria may be ideal supplements for blocking intestinal absorption of food toxicants. However, the protective effects of lactic acid bacteria against dietary AGEs have not been fully elucidated. Materials and Methods: We investigated the effect of treatment with Lactococcus lactis KF140 (LL-KF140), which was isolated from kimchi, on the levels and toxicokinetics of CML. The CML reduction efficacies of the Lactococcus lactis KF140 (LL-KF140), which was isolated from kimchi, were conducted by in vitro test for reducing CML concentration of the casein-lactose reaction product (CLRP) and in vivo test for reducing serum CML level of LL-KF140 administered rats at 2.0 × 108 CFU/kg for14 days. In addition, 12 volunteers consuming LL-KF140 at 2.0 × 109 CFU/1.5 g for 26 days were determined blood CML concentration and compared with that before intake a Parmesan cheese. Results: Administration of LL-KF140 reduced serum CML levels and hepatic CML absorption in rats that were fed a CML-enriched product. In a human trial, the intake of LL-KF140 prevented increases in the serum levels of CML and alanine aminotransferase after consumption of a CML-rich cheese. LL-KF140 was determined to presence in feces through metagenome analysis. Furthermore, ß-galactosidase, one of the L. lactis-produced enzymes, inhibited the absorption of CML and reduced the levels of this AGE, which suggests an indirect inhibitory effect of LL-KF140. This study is the first to demonstrate that an L. lactis strain and its related enzyme contribute to the reduction of dietary absorption of CML.

9.
Food Funct ; 13(14): 7494-7506, 2022 Jul 18.
Artigo em Inglês | MEDLINE | ID: mdl-35686604

RESUMO

Radish (Raphanus sativus L.) is a rich source of nutrients and its greens have reported functionalities. This study aimed to investigate the effects of a water-soluble extract from radish greens (WERG) on adipogenesis in 3T3-L1 adipocytes and high-fat diet-induced obesity in model mice. We also quantified the phytochemical composition of WERG such as glucoraphenin and ferulic acid. These findings show that treatment with 100 µg mL-1 WERG reduced lipid accumulation in 3T3-L1 adipocytes, whereas in mice, the administration of 100 mg kg-1 WERG reduced weight gain and hepatic lipid accumulation and improved the levels of serum lipid biomarkers. Furthermore, WERG treatment improved intestinal permeability and suppressed the activities of harmful intestinal enzymes in feces, thus improving gut health. It also inhibited metabolic endotoxemia and inflammatory marker levels in serum. Moreover, WERG reduced the expression of lipid-metabolism-related proteins in the liver and white adipose tissue. Collectively, these results indicate that WERG may potentiate the anti-obesity effect by improving gut health and regulating lipid metabolism.


Assuntos
Fármacos Antiobesidade , Raphanus , Células 3T3-L1 , Adipogenia , Animais , Fármacos Antiobesidade/farmacologia , Dieta Hiperlipídica/efeitos adversos , Metabolismo dos Lipídeos , Lipídeos , Camundongos , Camundongos Endogâmicos C57BL , Obesidade/metabolismo , Água/farmacologia
10.
Nutrients ; 14(9)2022 May 07.
Artigo em Inglês | MEDLINE | ID: mdl-35565930

RESUMO

Diet-induced obesity is one of the major causes of the development of metabolic disorders such as insulin resistance and nonalcoholic fatty liver disease (NAFLD). Recently, specific probiotic strains have been found to improve the symptoms of NAFLD. We examined the effects of Bifidobacterium animalis ssp. lactis MG741 (MG741) on NAFLD and weight gain, using a mouse model of high-fat-diet (HFD)-induced obesity. HFD-fed mice were supplemented daily with MG741. After 12 weeks, MG741-administered mice exhibited reduced fat deposition, and serum metabolic alterations, including fasting hyperinsulinemia, were modulated. In addition, MG741 regulated Acetyl-CoA carboxylase (ACC), fatty acid synthase (FAS), sterol regulatory element-binding protein 1 (SREBP-1), and carbohydrate-responsive element-binding protein (ChREBP) expression and lipid accumulation in the liver, thereby reducing the hepatic steatosis score. To determine whether the effects of MG741 were related to improvements in gut health, MG741 improved the HFD-induced deterioration in gut permeability by reducing toxic substances and inflammatory cytokine expression, and upregulating tight junctions. These results collectively demonstrate that the oral administration of MG741 could prevent NAFLD and obesity, thereby improving metabolic health.


Assuntos
Bifidobacterium animalis , Hepatopatia Gordurosa não Alcoólica , Animais , Peso Corporal , Citocinas/metabolismo , Dieta Hiperlipídica/efeitos adversos , Fígado/metabolismo , Camundongos , Camundongos Endogâmicos C57BL , Hepatopatia Gordurosa não Alcoólica/metabolismo , Hepatopatia Gordurosa não Alcoólica/prevenção & controle , Obesidade/metabolismo , Permeabilidade
11.
Carbohydr Polym ; 287: 119363, 2022 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-35422307

RESUMO

The gut microbiome is a complex ecosystem of the host body that maintains a balance with its host. In this context, dysbiosis can lead to inflammatory response, immune dysregulation, and various metabolic disorders. Dietary polysaccharides mediate gut microbiota and its metabolites related to host health. In this review, we describe the structural characteristics of pectic polysaccharides and the functional correlation between their structure-specific characteristics and the modulatory activity of gut microbiota. We also discuss the health benefits of pectic polysaccharides on diet-induced obesity and intestinal health based on their source and structure. By regulating gut microbiota, pectic polysaccharides exert a wide range of biological effects, including the inhibition of obesity, fatty liver disease, and inflammation, and the increase in gut barrier function and immune-enhancing activity. This review expected to serve as a valuable resource to further clarity the relationship between pectic polysaccharides and gut microbiota.


Assuntos
Microbioma Gastrointestinal , Ecossistema , Humanos , Obesidade/tratamento farmacológico , Obesidade/metabolismo , Pectinas , Polissacarídeos/farmacologia
12.
J Nutr Biochem ; 103: 108954, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35121021

RESUMO

Obesity is a global health issue associated with increased prevalence of disease and mortality. Molokhia (Corchorus olitorius L.) leaves, used as vegetables in Asia and Africa, comprise abundant water-soluble mucilage polysaccharides. The present study aimed to evaluate the effects of molokhia leaf polysaccharide fraction (MPF) on high-fat diet (HFD)-induced obesity and gut dysbiosis in mice. A significant decrease was observed in the body weight, adipocyte size, triglyceride serum, and low-density lipoprotein cholesterol levels, as well as in the expression of lipid synthesis-related proteins in mice treated with 4 mg/kg of MPF (MPF4). Moreover, the expression of the tight junction protein increased significantly; however, gut permeability and related inflammatory marker levels decreased in the MPF4 group. Furthermore, MPF ameliorated gut dysbiosis, whereas the MPF4 group presented a decreased Firmicutes to Bacteroidetes ratios and an increased abundance of Akkermansia during exposure to HFD. Our findings reveal that rhamnogalacturonan-Ⅰ rich MPF attenuates obesity in mice subjected to HFD by modulating the gut microbiota.


Assuntos
Disbiose , Microbioma Gastrointestinal , Animais , Dieta Hiperlipídica/efeitos adversos , Carboidratos da Dieta , Disbiose/metabolismo , Camundongos , Camundongos Endogâmicos C57BL , Obesidade/etiologia , Obesidade/metabolismo , Polissacarídeos/farmacologia
13.
Nutrients ; 13(9)2021 Aug 27.
Artigo em Inglês | MEDLINE | ID: mdl-34578867

RESUMO

Dietary habits and gut microbiota play an essential role in non-alcoholic fatty liver disease (NAFLD) and related factors such as insulin resistance and de novo lipogenesis. In this study, we investigated the protective effects of Bacteroides uniformis CBA7346, isolated from the gut of healthy Koreans, on mice with high-fat diet (HFD)-induced NAFLD. Administration of B. uniformis CBA7346 reduced body and liver weight gain, serum alanine aminotransferase and aspartate aminotransferase levels, liver steatosis, and liver triglyceride levels in mice on an HFD; the strain also decreased homeostatic model assessment for insulin resistance values, as well as serum cholesterol, triglyceride, lipopolysaccharide, leptin, and adiponectin levels in mice on an HFD. Moreover, B. uniformis CBA7346 controlled fatty liver disease by attenuating steatosis and inflammation and regulating de novo lipogenesis-related proteins in mice on an HFD. Taken together, these findings suggest that B. uniformis CBA7346 ameliorates HFD-induced NAFLD by reducing insulin resistance and regulating de novo lipogenesis in obese mice.


Assuntos
Bacteroides , Dieta Hiperlipídica/efeitos adversos , Fígado Gorduroso/prevenção & controle , Microbioma Gastrointestinal/fisiologia , Resistência à Insulina/fisiologia , Lipogênese/fisiologia , Animais , Modelos Animais de Doenças , Fígado Gorduroso/sangue , Fígado Gorduroso/etiologia , Humanos , Fígado , Masculino , Camundongos , Camundongos Endogâmicos C57BL
14.
Foodborne Pathog Dis ; 18(12): 887-893, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34388355

RESUMO

The purpose of this study was to investigate the monthly contamination rate of pathogenic Escherichia coli, a major cause of food poisoning, in vegetables sold in agricultural wholesale markets, which distribute vegetables from all over the country, in the Incheon Metropolitan City area, South Korea, and to identify a source of the pathogen. In total, 1739 vegetables of 80 types, along with 109 soil, 67 manure, and 33 livestock feces samples, were tested for pathogenic E. coli using polymerase chain reaction, from September 2016 through August 2017. The average annual prevalence rate of vegetables was 5.8%, and the prevalence rate was above 5% from June through October. The highest prevalence rate (15.7%) was recorded in July. Water dropwort showed the highest prevalence rate (28.6%) among the vegetables examined. Pathogenic E. coli was detected in >20 types of the vegetables that were to be consumed without cooking. Among these, the prevalence rates of ponytail radish (n = 21), crown daisy (n = 86), young radish (n = 68), romaine lettuce (n = 133), perilla leaf (n = 103), Korean leek (n = 43), young Chinese cabbage (n = 68), and Chinese cabbage (n = 30) were 9.5%, 8.1%, 7.4%, 6.8%, 4.9%, 4.7%, 4.4%, and 3.3%, respectively. Among the vegetables cooked before consumption, prevalence rates were 28.6%, 27.3%, and 25.0% in wormwood, sweet potato stalk, and edible mountain vegetables (Saussurea sp., etc.), respectively. In soil, manure, and livestock feces, 36.7%, 26.9%, and 90.6% prevalence rates were confirmed, respectively. This study confirmed the pathogenic E. coli contamination of vegetables to be consumed without cooking. Therefore, to produce agricultural products that do not induce food poisoning and are safe for consumption, it is important to develop a process for killing the pathogenic microorganisms and set up a sanitary environment for effectively managing compost. In addition, it is necessary to establish surveillance systems to monitor the production chain.


Assuntos
Escherichia coli , Verduras , Contaminação de Alimentos/análise , Microbiologia de Alimentos , Lactuca , Esterco
15.
Int J Biol Macromol ; 175: 443-450, 2021 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-33556396

RESUMO

Plant-derived polysaccharides possess potential health benefits that improve intestinal health and the immune system. Molokhia leaves have a large amount of mucilage polysaccharide; in the present study, crude polysaccharide extract was prepared from molokhia leaves. The molecular weight of molokhia leaf polysaccharide fraction (MPF) was estimated to be 51.2 × 103 Da. Polysaccharide was methylated and the structure of MPF was mainly composed of rhamnogalacturonan-I structure with side chains, such as galactans and linear glucan (starch), as shown by GC-MS analysis. To study the biofunctional effects of MPF, its prebiotic and intestinal immune-enhancing activities were assayed in vitro. MPF exhibited good prebiotic activity, as shown by its high prebiotic scores, and increased contents of total short-chain fatty acids on five probiotic strains. In addition, MPF showed immune-enhancing activity on Peyer's patches, as revealed by the high bone marrow cell proliferating activity and production of immunoglobulin A and cytokines. These results demonstrate that MPF may be a potential beneficial prebiotic and intestinal immune-enhancer, which may have wide implications in the food industry.


Assuntos
Corchorus/metabolismo , Pectinas/química , Pectinas/farmacologia , Animais , Medula Óssea/efeitos dos fármacos , Corchorus/química , Carboidratos da Dieta/farmacologia , Feminino , Galactanos/farmacologia , Cromatografia Gasosa-Espectrometria de Massas/métodos , Intestinos/efeitos dos fármacos , Mesotelina , Camundongos , Camundongos Endogâmicos C3H , Pectinas/metabolismo , Extratos Vegetais/metabolismo , Folhas de Planta/química , Folhas de Planta/efeitos dos fármacos , Folhas de Planta/metabolismo , Polissacarídeos/química , Prebióticos
16.
Food Chem ; 343: 128395, 2021 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-33268179

RESUMO

Radish (Raphanus sativus) greens are commonly used as a vegetable in Korea; however, their anti-obesity effect has not been reported yet. We prepared the polysaccharide fraction of radish greens (PRG) and assessed its anti-obesity activity in high fat diet (HFD)-induced obese C57BL/6J mice. Supplementation with 4 mg/kg PRG reduced weight gain and body fat percentage, and regulated serum biomarkers against HFD-induced obesity. Moreover, PRG treatment improved gut permeability by increasing tight junction protein expression and colon length shortening. HFD intake increased the proportion of Firmicutes and decreased the proportion of Bacteroidetes and Verrucomicrobia; however, PRG supplementation maintained gut microbial composition to normal diet condition. Moreover, PRG reduced HFD-induced increase of lipid metabolism-related protein expression, along with adipocyte size in white adipose tissue. These results indicated that PRG as a potential prebiotic, has anti-obesity properties by improving gut barrier function, modulating gut microbiota and regulating lipid metabolism.


Assuntos
Obesidade/prevenção & controle , Polissacarídeos/administração & dosagem , Raphanus/metabolismo , Tecido Adiposo Branco/efeitos dos fármacos , Tecido Adiposo Branco/metabolismo , Animais , Biomarcadores/sangue , Colo/efeitos dos fármacos , Colo/fisiologia , Dieta Hiperlipídica , Microbioma Gastrointestinal/efeitos dos fármacos , Metabolismo dos Lipídeos/efeitos dos fármacos , Metabolismo dos Lipídeos/genética , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Obesidade/patologia , Folhas de Planta/metabolismo , Caules de Planta/metabolismo , Polissacarídeos/metabolismo , Polissacarídeos/farmacologia , Análise de Componente Principal , Proteínas de Junções Íntimas/metabolismo
17.
J Ethnopharmacol ; 257: 112866, 2020 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-32302714

RESUMO

ETHNOPHARMACOLOGICAL RELEVANCE: Molokhia is highly consumed in Egypt as edible and medicinal plants, and its leaves are used for the treatment of pain, fever, and inflammation. AIM OF THE STUDY: High-fat diet (HFD) induces gut dysbiosis, which is closely linked to metabolic diseases including obesity and leaky gut. The effects of molokhia (Corchorus olitorius L.) on anti-obesity and gut health were investigated in this study. MATERIALS AND METHODS: The effects of a water-soluble extract from molokhia leaves (WM) on lipid accumulation in 3T3-L1 adipocytes and on body weight, gut permeability, hormone levels, fecal enzyme activity of the intestinal microflora, and gut microbiota in HFD-induced C57BL/6J mice were examined. RESULTS: WM treatment significantly inhibited lipid accumulation in 3T3-L1 adipocytes. Mice treated with 100 mg/kg WM had 13.1, 52.4, and 17.4% significantly lower body weights, gut permeability, and hepatic lipid accumulation than those in the HFD group, respectively. In addition, WM influenced gut health by inhibiting metabolic endotoxemia and colonic inflammation. It also altered the composition of the gut microbiota; in particular, it increased the abundance of Lactobacillus and decreased that of Desulfovibrio. CONCLUSION: Our results extend our understanding of the beneficial effects of WM consumption, including the prevention of gut dysbiosis and obesity.


Assuntos
Anti-Inflamatórios/farmacologia , Fármacos Antiobesidade/farmacologia , Bactérias/efeitos dos fármacos , Colite/prevenção & controle , Colo/microbiologia , Corchorus , Fármacos Gastrointestinais/farmacologia , Microbioma Gastrointestinal/efeitos dos fármacos , Obesidade/prevenção & controle , Extratos Vegetais/farmacologia , Folhas de Planta , Células 3T3-L1 , Adipócitos/efeitos dos fármacos , Adipócitos/metabolismo , Animais , Anti-Inflamatórios/isolamento & purificação , Fármacos Antiobesidade/isolamento & purificação , Bactérias/enzimologia , Bactérias/crescimento & desenvolvimento , Biomarcadores/sangue , Colite/metabolismo , Colite/microbiologia , Corchorus/química , Dieta Hiperlipídica , Modelos Animais de Doenças , Disbiose , Fármacos Gastrointestinais/isolamento & purificação , Metabolismo dos Lipídeos/efeitos dos fármacos , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Obesidade/metabolismo , Obesidade/microbiologia , Extratos Vegetais/isolamento & purificação , Folhas de Planta/química
18.
Microorganisms ; 8(3)2020 Mar 18.
Artigo em Inglês | MEDLINE | ID: mdl-32197401

RESUMO

Recent studies report that microbiota in the human intestine play an important role in host health and that both long- and short-term diets influence gut microbiota. These findings have fueled interest in the potential of food to promote health by shaping the intestinal microbiota. Despite the fact that large populations in Asia consume high quantities of carbohydrates, such diets have been ignored in comparison to the attention received by Western diets containing high quantities of fat and animal protein. We gathered data that suggest an association between imbalanced high-carbohydrate intake and gut microbiota and host health. In this review, we identify not only the effect of total carbohydrates on the intestinal microbiota specifically and the health of their hosts in general, but also how specific types of carbohydrates influence both factors.

19.
Eur J Nutr ; 59(8): 3779-3790, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-32125529

RESUMO

PURPOSE: Metabolic diseases caused by high-carbohydrate and/or high-salt diets are becoming major public health concerns. However, the effects of salt on high-carbohydrate diet-induced obesity are unclear. Accordingly, in this study, we investigated the effects of high-salt intake on high-carbohydrate diet-induced obesity. METHODS: We performed a 12-week study on gut microbiota and metabolic changes in high-rice diet (HRD) or HRD supplemented with high-salt (HRS)-fed C57BL/6 J mice by 16S rRNA analysis, glucose and insulin tolerance testing, gut barrier function, western blot and histological analysis. Moreover, the effects of salt on lipid metabolism were confirmed in vitro using 3T3-L1 cells. RESULTS: High salt intake decreased HRD-induced increases in body and white adipose tissue (WAT) weight. Alternatively, HRS did not reverse the observed increases in glucose intolerance and insulin resistance. Moreover, HRD caused changes in the gut microbiota, thereby impairing gut barrier function and increasing inflammation in the liver. HRS altered HRD-induced microbial composition, however, did not ameliorate gut barrier dysfunction or hepatic inflammation. HRS diets regulated the HRD-induced increase in peroxisome proliferator-activated receptor-γ (PPAR-γ) and lipid metabolism-related protein expression. Moreover, within WAT, HRS was found to reverse the observed decrease in adiponectin and increase in PPAR-γ expression induced by HRD. In vitro, high NaCl concentration also significantly reduced 3T3-L1 cell differentiation and modulated lipid metabolism without causing cytotoxicity. CONCLUSION: These results indicate that high salt intake ameliorates metabolic changes associated with a high-rice diet, including changes in fecal microbiota composition.


Assuntos
Microbioma Gastrointestinal , Doenças Metabólicas , Animais , Dieta Hiperlipídica/efeitos adversos , Camundongos , Camundongos Endogâmicos C57BL , RNA Ribossômico 16S , Cloreto de Sódio , Cloreto de Sódio na Dieta/efeitos adversos
20.
Nutrients ; 12(2)2020 Jan 22.
Artigo em Inglês | MEDLINE | ID: mdl-31979147

RESUMO

Diets high in gelatinized starch and high in gelatinized starch supplemented with salt-induced metabolic disorders and changes in gut microbiota have scarcely been studied. In this study, mice on wheat starch diets (WD) exhibited significantly higher body weight, white adipose tissue (WAT), and gut permeability compared to those on normal diet (ND). However, gelatinized wheat starch diet (GWD) and NaCl-supplemented gelatinized wheat starch diet (SGW) mice did not increase body and WAT weights or dyslipidemia, and maintained consistent colon pH at ND levels. WD mice showed higher levels of Desulfovibrio, Faecalibaculum, and Lactobacillus and lower levels of Muribaculum compared to ND mice. However, GWD and SGW mice showed a significantly different gut microbial composition, such as a lower proportion of Lactobacillus and Desulfovibrio, and higher proportion of Faecalibaculum and Muribaculum compared to WD mice. High starch diet-induced dysbiosis caused increase of lipid accumulation and inflammation-related proteins' expression, thereby leading to non-alcoholic fatty liver disease. However, GWD and SGW showed lower levels than that, and it might be due to the difference in the gut microbial composition compared to WD. Taken together, diets high in gelatinized starch and high in gelatinized starch supplemented with salt induced mild metabolic disorders compared to native starch.


Assuntos
Dieta/efeitos adversos , Microbioma Gastrointestinal/efeitos dos fármacos , Doenças Metabólicas/etiologia , Cloreto de Sódio na Dieta/efeitos adversos , Amido/efeitos adversos , Triticum/química , Animais , Dieta/métodos , Disbiose/etiologia , Gelatina , Inflamação , Camundongos , Hepatopatia Gordurosa não Alcoólica/etiologia
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