RESUMO
The aim of this study was to investigate the impact of glucose (Glu), fructose (Fru), glucose and fructose (GluFru) and sucralose on blood glucose response in healthy individuals. Fifteen healthy individuals (five females, age of 25.4 ± 2.5 years, BMI of 23.7 ± 1.7 kg/m2 with a body mass (BM) of 76.3 ± 12.3 kg) participated in this double-blind randomized crossover placebo-controlled trial. Participants received a mixture of 300 mL of water with 1 g/kg BM of Glu, 1 g/kg BM of Fru, 0.5 g/kg BM of GluFru (each), and 0.2 g sucralose as a placebo. Peak BG values Glu were reached after 40 ± 13 min (peak BG: 141 ± 20 mg/dL), for Fru after 36 ± 22 min (peak BG: 98 ± 7 mg/dL), for GluFru after 29 ± 8 min (BG 128 ± 18 mg/dL), and sucralose after 34 ± 27 min (peak BG: 83 ± 5 mg/dL). Significant differences regarding the time until peak BG were found only between Glu and GluFru supplementation (p = 0.02). Peak blood glucose levels were significantly lower following the ingestion of Fru compared to the supplementation of Glu and GluFru (p < 0.0001) while Glu and GluFru supplementation showed no difference in peak values (p = 0.23). All conditions led to a significantly higher peak BG value compared to sucralose (p < 0.0001). Blood lactate increased in Glu (p = 0.002), Fru and GluFru (both p < 0.0001), whereas sucralose did not increase compared to the baseline (p = 0.051). Insulin levels were significantly higher in all conditions at peak compared to sucralose (p < 0.0001). The findings of this study prove the feasibility of combined carbohydrate supplementations for many applications in diabetic or healthy exercise cohorts.
Assuntos
Açúcares da Dieta/administração & dosagem , Suplementos Nutricionais , Frutose/administração & dosagem , Glucose/administração & dosagem , Sacarose/análogos & derivados , Adulto , Glicemia/metabolismo , Estudos Cross-Over , Método Duplo-Cego , Ingestão de Energia/fisiologia , Feminino , Voluntários Saudáveis , Humanos , Ácido Láctico/sangue , Masculino , Sacarose/administração & dosagem , Edulcorantes/administração & dosagem , Adulto JovemRESUMO
The aim of this study was to evaluate the effect of green and black tea kombuchas consumption on adiposity, lipid and glucose metabolism, liver steatosis, oxidative stress, and inflammation in Wistar rats fed a high-fat high-fructose (HFHF) diet. Wistar rats, after 8 weeks to induce metabolic alterations, were divided into an AIN-93M control group, HFHF control group, green tea kombucha + HFHF diet (GTK group), and black tea kombucha + HFHF diet (BTK group), for 10 weeks. The kombuchas improved glucose metabolism, plasma total antioxidant capacity, superoxide dismutase activity, and decreased nitric oxide concentration. Moreover, both kombuchas reduced systemic inflammation by decreasing the neutrophil/lymphocyte ratio (NLR), reduced the total adipose tissue and blood triglyceride, and reverted liver steatosis (from grade 2 to 1), besides the modulation of genes related to adipogenesis and ß-oxidation. Therefore, kombuchas from green and black teas have bioactive properties that can help control metabolic alterations induced by the HFHF diet.
Assuntos
Dieta Hiperlipídica/efeitos adversos , Açúcares da Dieta/efeitos adversos , Frutose/administração & dosagem , Glucose/metabolismo , Chá de Kombucha , Tecido Adiposo/efeitos dos fármacos , Tecido Adiposo/metabolismo , Animais , Glicemia/efeitos dos fármacos , Açúcares da Dieta/administração & dosagem , Inflamação/tratamento farmacológico , Masculino , Hepatopatia Gordurosa não Alcoólica/tratamento farmacológico , Estresse Oxidativo/efeitos dos fármacos , Ratos , Ratos WistarRESUMO
Isorhamnetin (ISO), a flavonoid compound isolated from sea-buckthorn (Hippophae rhamnoides L.) fruit, has anti-inflammatory effects. However, the effects of ISO on neuroinflammation and cognitive function are still unclear. The purpose of this study was to evaluate the protective effect of ISO on cognitive impairment in obese mice induced by a high-fat and high fructose diet (HFFD). It has been found that oral administration of ISO (0.03% w/w and 0.06% w/w) for 14 weeks significantly reduced the body weight, food intake, liver weight, liver lipid level, and serum lipid level of HFFD-fed mice. ISO can also significantly prevent HFFD-induced neuronal working, spatial, and long-term memory impairment. Notably, the ISO treatment activated the CREB/BDNF pathway and increased neurotrophic factors in the brains of mice. Furthermore, ISO inhibited HFFD-induced microglial overactivation and down-regulated inflammatory cytokines in both serum and the brain. It can also inhibit the expression of p-JNK, p-p38, and p-NFκB protein in the mouse brain. In conclusion, these results indicated that ISO mitigated HFFD-induced cognitive impairments by inhibiting the MAPK and NFκB signaling pathways, suggesting that ISO might be a plausible nutritional intervention for metabolic syndrome-related cognitive complications.
Assuntos
Disfunção Cognitiva/prevenção & controle , Dieta Hiperlipídica/efeitos adversos , Açúcares da Dieta/administração & dosagem , Suplementos Nutricionais , Doenças Neuroinflamatórias/prevenção & controle , Quercetina/análogos & derivados , Transdução de Sinais , Animais , Encéfalo/imunologia , Encéfalo/metabolismo , Fator Neurotrófico Derivado do Encéfalo/metabolismo , Disfunção Cognitiva/metabolismo , Proteína de Ligação ao Elemento de Resposta ao AMP Cíclico/metabolismo , Citocinas/sangue , Citocinas/metabolismo , Açúcares da Dieta/efeitos adversos , Frutose/administração & dosagem , Sistema de Sinalização das MAP Quinases , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Obesos , Microglia/fisiologia , NF-kappa B/metabolismo , Doenças Neuroinflamatórias/metabolismo , Quercetina/administração & dosagem , Aumento de PesoRESUMO
Honey is a traditional food additive that can be used to preserve food, increase the flavour of food, and enhance the effect of some functional foods. Mulberry leaf is a popular tea, and it is also an anti-diabetic medicinal material. In the traditional processing of mulberry leaf tea, honey is a commonly used additive. This study used ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) to measure the changes in the contents of 11 components of mulberry leaves before and after processing using honey as an additive. We analysed the absorption and elimination characteristics of mulberry leaves before and after processing in diabetes in vivo models, and then compared the effect of mulberry leaves before and after processing in resisting hyperglycaemia and hyperlipidaemia damage in in vitro models. The results showed that honey, as an additive, not only improves the dissolution of mulberry leaves, but in diabetes models also increases the utilisation of some components. In an in vitro model, honey mulberry leaves could significantly reduce the apoptosis of vascular endothelial cells. This demonstrated that the traditional processing method using honey as an additive could promote the anti-diabetic effect of mulberry tea. So far, this is the first research report on the quality and role of honey as an additive in mulberry leaf processing.Abbreviations: ML: mulberry leaves; HML: honey mulberry leaves; QC: quality control; HQC: high quality control sample; LLOQ: lower limit of quantification; LQC: low-quality control sample; MQC: medium-quality control sample; MRM: multiple reaction monitoring; STZ: streptozotocin.
Assuntos
Bebidas/análise , Diabetes Mellitus/induzido quimicamente , Mel/análise , Morus/química , Folhas de Planta/química , Administração Oral , Animais , Apoptose/efeitos dos fármacos , Área Sob a Curva , Linhagem Celular , Sobrevivência Celular/efeitos dos fármacos , Cromatografia Líquida , Dieta Hiperlipídica , Açúcares da Dieta/administração & dosagem , Açúcares da Dieta/efeitos adversos , Células Endoteliais/efeitos dos fármacos , Manipulação de Alimentos , Meia-Vida , Masculino , Extratos Vegetais/química , Extratos Vegetais/farmacocinética , Extratos Vegetais/farmacologia , Distribuição Aleatória , Ratos , Ratos Sprague-Dawley , Espectrometria de Massas em TandemRESUMO
Objectives: Curcuma amada Roxb. (Mango ginger) was evaluated for anti-obesity, anti-amnesic and neuroprotection using high-fat and high-sugar diet (HFHS)-induced obesity and cognitive impairment in rats. Methods: Animals were exposed to HFHS diet to evaluate lipid parameters and subjected to Y maze test and Pole climbing test to evaluate the memory. In addition, oxidative stress parameters, acetyl cholinesterase activity (AChE), neurochemicals and histopathology were assessed in the brain. Results: HFHS diet led to increased body weight and lipid parameters (total cholesterol, low-density lipoprotein [LDL], and very low-density lipoprotein [VLDL], triglycerides [TG]) but not high-density lipoprotein (HDL). Elevated serum glutamate oxalate transaminase (SGOT) and serum glutamate pyruvate transaminase (SGPT), oxidative biomarker, decreased enzymatic and non-enzymatic antioxidants, Acetylcholinesterase (AChE) activity and reduced percentage of spontaneous alternation behaviour (% SAB in Y-maze test) as well as reduced serotonin and dopamine levels and neurodegeneration were observed in HFHS diet-fed rats. Curcuma amada (CAAE1, 100 mg/kg and CAAE2, 300 mg/kg) treatment to HFHS diet-fed rats (21 days after HFHS diet feeding alone) showed dose-dependent activity and ameliorated the HFHS diet-induced alterations in lipid parameters related to obesity, hepatological parameters, memory, oxidative stress, neurochemicals and neurodegeneration. Furthermore, 300 mg/kg of C. amada (CAAE2) augmented the memory by inhibiting acetylcholinesterase (AChE) activity; it also ameliorated the effect of antioxidants such as glutathione, superoxide dismutase (SOD), and total thiol and mitigated the effect of malondialdehyde (MDA). CAAE2 also controlled the level of dopamine and serotonin and reduced the neurodegeneration in the hippocampus CA1 region. Discussion: The results of the present study indicated that treatment with C. amada 300 mg/kg (CAAE2) attenuated the HFHS diet-induced obesity, memory loss, oxidative stress, and neurodegeneration. These study results indicated that the administration of C. amada offers a potential treatment option for obesity and memory loss, and it requires further preclinical and clinical evaluations.
Assuntos
Curcuma , Dieta Hiperlipídica , Açúcares da Dieta/administração & dosagem , Memória/efeitos dos fármacos , Fármacos Neuroprotetores/administração & dosagem , Obesidade/metabolismo , Obesidade/psicologia , Extratos Vegetais/administração & dosagem , Animais , Comportamento Animal , Masculino , Obesidade/complicações , Ratos WistarRESUMO
Policies to require warnings on the front of food and drinks high in nutrients of concern (e.g., added sugar, sodium, or saturated fat) are becoming increasingly common as an obesity prevention strategy. Colombia, a country with growing prevalence of obesity, is considering implementing a similar policy. The objective of this study was to assess perceptions and reactions to different warning designs. We conducted a randomized experiment in an online panel of adults age > 18y (n = 1997). Participants were randomized to view one of four labels: a control label (barcode), an octagon warning, a circle warning, and a triangle warning. Participants viewed their randomly assigned label on a series of products and answered questions (continuous outcomes ranged from 1-4). Compared to the control, all warnings led to higher perceived message effectiveness (increase in mean from 1.79 in the control to 2.59-2.65 in the warning conditions, p < 0.001), a higher percentage of participants who correctly identified products high in nutrients of concern (from 48% in the control condition to 84-89% in the warning conditions, p < 0.001), and reduced intentions to purchases these products (decrease in mean from 2.59 to 1.99-2.01 in the warning conditions, p < 0.001). Relative to the control, warnings performed similarly across education levels, suggesting this policy would be equitable in Colombia. Looking at differences by warning type, the pattern of results suggested that the octagon warnings performed best. After viewing all label types, 49% of participants selected the octagon warning as the one that most discouraged them from consuming products high in nutrients of concern, while 21% and 27% selected the circle and triangle warning. Colombian policymakers should consider the octagon warning as part of a front-of-package labeling policy to help consumers identify and reduce consumption of foods and drinks high in nutrients of concern.
Assuntos
Comportamento do Consumidor , Gorduras na Dieta/efeitos adversos , Gorduras na Dieta/análise , Açúcares da Dieta/administração & dosagem , Açúcares da Dieta/efeitos adversos , Ácidos Graxos/administração & dosagem , Ácidos Graxos/efeitos adversos , Comportamento Alimentar/psicologia , Análise de Alimentos , Rotulagem de Alimentos/legislação & jurisprudência , Rotulagem de Alimentos/métodos , Alimentos , Legislação sobre Alimentos , Política Nutricional/legislação & jurisprudência , Obesidade/prevenção & controle , Bebidas Adoçadas com Açúcar/efeitos adversos , Bebidas Adoçadas com Açúcar/análise , Adulto , Colômbia/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade/epidemiologia , Prevalência , Adulto JovemRESUMO
Small-quantity lipid-based nutrient supplements (SQ-LNS) could help prevent malnutrition. Our primary objective was to examine the acceptability and consumption of sweetened and unsweetened versions of SQ-LNS before and after 14-days of repeated exposure. A total of 78 mother-infant dyads recruited from health centers in Morelos, Mexico, were randomized to two groups of SQ-LNS (sweetened, LNS-S; unsweetened, LNS-U). During the study, infants were fed SQ-LNS (20 g) mixed with 30 g of complementary food of the caregiver's choice. The amount of supplement-food mixture consumed was measured before, during and after a 14-day home exposure period. We defined acceptability as consumption of at least 50% of the offered food mixture. At initial exposure, LNS-U consumption was on average 44.0% (95% CI: 31.4, 58.5) and LNS-S 34.8% (25.3, 44.0); at final exposure, LNS-U and LNS-S consumption were 38.5% (27.8, 54.0) and 31.5% (21.6, 43.0). The average change in consumption did not differ between the groups (2.2 p.p. (-17.2, 24.4)). We conclude that the acceptability of sweetened and unsweetened SQ-LNS was low in this study population. Since consumption did not differ between supplement versions, we encourage the use of the unsweetened version given the potential effects that added sugar may have on weight gain especially in regions facing the double burden of malnutrition.
Assuntos
Gorduras na Dieta/administração & dosagem , Açúcares da Dieta/administração & dosagem , Suplementos Nutricionais , Transtornos da Nutrição do Lactente/prevenção & controle , Fenômenos Fisiológicos da Nutrição do Lactente/fisiologia , Pré-Escolar , Açúcares da Dieta/efeitos adversos , Feminino , Alimentos Fortificados , Humanos , Lactente , Masculino , México , Aumento de PesoRESUMO
Maternal fructose consumption during pregnancy and lactation is associated with metabolic dysregulation in offspring. We tested the hypothesis that fish oil (FO) supplementation during pregnancy and lactation improves fructose-induced metabolic dysregulation in postpartum dams and offspring mice. We therefore aimed to determine the effects of FO supplementation on metabolic disruption in neonatal mice and dams induced by a maternal high-fructose diet (HFrD). The weight of the offspring of dams fed with HFrD on postnatal day 5 was significantly low, but this was reversed by adding FO to the maternal diet. Feeding dams with HFrD significantly increased plasma concentrations of triglycerides, uric acid, and total cholesterol, and decreased free fatty acid concentrations in offspring. Maternal supplementation with FO significantly suppressed HFrD-induced hypertriglyceridemia and hyperuricemia in the offspring. Maternal HFrD induced remarkable mRNA expression of the lipogenic genes Srebf1, Fasn, Acc1, Scd1, and Acly in the postpartum mouse liver without affecting hepatic and plasma lipid levels. Although expression levels of lipogenic genes were higher in the livers of postpartum dams than in those of nonmated mice, HFrD feeding increased the hepatic lipid accumulation in nonmated mice but not in postpartum dams. These findings suggest that although hepatic lipogenic activity is higher in postpartum dams than nonmated mice, the lipid consumption is enhanced in postpartum dams during pregnancy and lactation. Maternal FO supplementation obviously suppressed the expression of these lipogenic genes. These findings coincide with reduced plasma triglyceride concentrations in the offspring. Therefore, dietary FO apparently ameliorated maternal HFrD-induced dyslipidemia in offspring by suppressing maternal lipogenic gene expression and/or neonatal plasma levels of uric acid.
Assuntos
Açúcares da Dieta/administração & dosagem , Suplementos Nutricionais , Óleos de Peixe/administração & dosagem , Frutose/administração & dosagem , Hiperlipidemias/prevenção & controle , Lipogênese/genética , Fígado/metabolismo , Animais , Animais Recém-Nascidos , Feminino , Regulação da Expressão Gênica , Hiperlipidemias/etiologia , Lactação , Metabolismo dos Lipídeos , Lipídeos/sangue , Camundongos , Período Pós-Parto , Gravidez , Ácido Úrico/sangueRESUMO
Being born with large birthweight is considered as a risk of non-communicable diseases later in life. However, it is not fully understood what kind of maternal dietary intake during pregnancy affect large birthweight. Therefore, we examined the association of dietary intakes and its changes during pregnancy with large-for-gestational-age (LGA) births in Japanese pregnant women. In the prospective study, 245 pregnant women who visited Kyoto Medical Center were enrolled. Nutrition survey using brief-type self-administered diet history questionnaire (BDHQ) at all trimester was completed in 171 pregnant women. Based on birthweight and gestational age, participants were divided into three groups, such as small-for-gestational-age (<10th, SGA, n=17), appropriate-for-gestational-age (≥10th and <90th, AGA, n=144), and LGA (≥90th, n=10) groups. Compared with those without LGA births, mothers with LGA births showed: 1) greater weight gain during pregnancy (LGA: 14.0±3.2 kg, AGA: 9.9±3.9 kg, SGA: 8.4±3.1 kg, p<0.05); 2) higher energy intake throughout pregnancy (LGA: 310±368 kcal, AGA: 7±490 kcal, SGA: -97±293 kcal, ptrend<0.05); 3) larger changes in plant oil and sucrose consumptions from the 1st to 2nd trimester, probably due to the results of greater consumption of bread, Western confectionery, Japanese confectionery, and mayonnaise and dressing during the same period (ptrend<0.05, respectively). Our results suggest that higher energy intake throughout pregnancy, as well as greater consumption of plant oil and sucrose from the first to second trimester could be associated with LGA births.
Assuntos
Peso ao Nascer , Dieta , Comportamento Alimentar , Idade Gestacional , Recém-Nascido Pequeno para a Idade Gestacional , Trimestres da Gravidez , Aumento de Peso , Adulto , Pão , Doces , Gorduras na Dieta/administração & dosagem , Açúcares da Dieta/administração & dosagem , Ingestão de Energia , Feminino , Humanos , Recém-Nascido , Mães , Óleos de Plantas/administração & dosagem , Gravidez , Resultado da Gravidez , Gestantes , Estudos Prospectivos , Sacarose/administração & dosagemRESUMO
High fructose intake has been shown to increase circulating alanine transaminase in humans, which could reflect damage to the liver by fructose but could also be linked to higher level of transamination of amino acids in liver. Therefore, we hypothesized that a diet with high content of fructose would affect the amino acid composition in rat plasma and urine differently from a diet with high sucrose content. Because high intake of sucrose and fructose is often accompanied with high intake of saturated fat in the Western-style diet, we wanted to compare the effects of high fructose/sucrose in diets with normal or high content of coconut oil on individual free amino acids plasma and urine. Male Wistar rats were fed diets with normal (10 wt%) or high (40 wt%) content of sucrose or fructose, with normal or high fat content (7 or 22 wt%) and 20 wt% protein (casein). Rats fed high-fructose high-fat diet had higher plasma concentrations of aspartic acid, cystine, glutamic acid, ornithine, and phenylalanine and higher urine concentrations of arginine and citrulline when compared to rats fed high-sucrose high-fat diet. Substituting normal content of sucrose with fructose in the diets had little impact on amino acids in plasma and urine. Serum concentrations of alanine transaminase, aspartate transaminase, and creatinine, and urine cystatin C and T cell immunoglobulin mucin-1 concentrations were comparable between the groups and within normal ranges. To conclude, substituting high-dose sucrose with high-dose fructose in high-fat diets affected amino acid compositions in plasma and urine.
Assuntos
Aminoácidos/sangue , Aminoácidos/urina , Dieta Hiperlipídica , Sacarose Alimentar/administração & dosagem , Açúcares da Dieta/administração & dosagem , Frutose/administração & dosagem , Animais , Arginina/urina , Ácido Aspártico/sangue , Glicemia/análise , Citrulina/urina , Cistina/sangue , Ácido Glutâmico/sangue , Lipídeos/sangue , Masculino , Ornitina/sangue , Fenilalanina/sangue , Ratos , Ratos WistarRESUMO
The present study aimed to compare the effects of drinking different types of coffee before a high-glycaemic index (GI) meal on postprandial glucose metabolism and to assess the effects of adding milk and sugar into coffee. In this randomised, crossover, acute feeding study, apparently healthy adults (n 21) consumed the test drink followed by a high-GI meal in each session. Different types of coffee (espresso, instant, boiled and decaffeinated, all with milk and sugar) and plain water were tested in separate sessions, while a subset of the participants (n 10) completed extra sessions using black coffees. Postprandial levels of glucose, insulin, active glucagon-like peptide 1 (GLP-1) and nitrotyrosine between different test drinks were compared using linear mixed models. Results showed that only preloading decaffeinated coffee with milk and sugar led to significantly lower glucose incremental AUC (iAUC; 14 % lower, P = 0·001) than water. Preloading black coffees led to greater postprandial glucose iAUC than preloading coffees with milk and sugar added (12-35 % smaller, P < 0·05 for all coffee types). Active GLP-1 and nitrotyrosine levels were not significantly different between test drinks. To conclude, preloading decaffeinated coffee with milk and sugar led to a blunted postprandial glycaemic response after a subsequent high-GI meal, while adding milk and sugar into coffee could mitigate the impairment effect of black coffee towards postprandial glucose responses. These findings may partly explain the positive effects of coffee consumption on glucose metabolism.
Assuntos
Café/química , Açúcares da Dieta/administração & dosagem , Ingestão de Líquidos/fisiologia , Leite , Período Pós-Prandial/fisiologia , Adulto , Animais , Glicemia/metabolismo , Cafeína/análise , Estudos Cross-Over , Feminino , Peptídeo 1 Semelhante ao Glucagon/sangue , Índice Glicêmico , Voluntários Saudáveis , Humanos , Insulina/sangue , Masculino , Refeições , Pessoa de Meia-Idade , Tirosina/análogos & derivados , Tirosina/sangue , Adulto JovemRESUMO
Mouth rinsing has been proposed as a strategy to minimize performance decrements during Ramadan. We investigated the effect of 4 weeks of Ramadan on kicking performance in 27 Taekwondo athletes performing weekly Taekwondo Anaerobic Intermittent Kick Tests (TAIKT). The effects of a placebo, 6.4% glucose and 6-mg/kg caffeine mouth rinses on TAIKT performance and perceived exertion were investigated before, during weekly training sessions, and after Ramadan in a counterbalanced, crossover design. Ramadan had a significant negative impact on the percentage of successful kicks in Week 1 of Ramadan (pre: 76.7±0.4%, Week 1: 69.9±3.2%). The percentage of successful kicks was significantly greater in the caffeine mouth rinse condition compared to the glucose and placebo conditions during the first 3 weeks of Ramadan (caffeine: 38.3±6.8%, glucose: 36.4±6.9%, placebo: 36.0±6.5%). Caffeine decreased perceived exertion during Ramadan (0.74-1.15 AU, p>0.05). Our results showed that Ramadan had a significant negative effect on repeated high-intensity kicking efforts that should be considered when training and competing. Additionally, there were significant positive effects of a caffeine mouth rinse in a sport-specific test. These data suggest that athletes can consider mouth rinsing as a strategy to enhance performance when undertaking training or competition during a period of privation.
Assuntos
Desempenho Atlético/fisiologia , Cafeína/administração & dosagem , Açúcares da Dieta/administração & dosagem , Jejum/fisiologia , Islamismo , Artes Marciais/fisiologia , Antissépticos Bucais , Adolescente , Adulto , Comportamento Competitivo/fisiologia , Estudos Cross-Over , Feminino , Humanos , Masculino , Percepção/fisiologia , Condicionamento Físico Humano , Esforço Físico/fisiologia , Adulto JovemRESUMO
BACKGROUND: Metabolic syndrome is a complex pattern of disorders that occur jointly and is associated with an increased risk of cardiovascular and cerebrovascular disease. Therefore the need for more-efficient options of treatment has become imperative. OBJECTIVE: This study examined the effect of dietary-melatonin in the management of behavioural, metabolic, antioxidant, and organ changes due to high-fat/high-sugar (HFHS) diet-induced metabolic syndrome in mice. METHODS: Mice were randomly assigned into five groups of ten animals each. Groups were normal control [fed standard diet (SD)], HFHS control, and 3 groups of melatonin incorporated into HFHS at 2.5, 5, and 10 mg/kg of feed. Mice were fed for seven weeks, and body weight was assessed weekly. Open-field behaviours, radial-arm, and Y-maze spatial memory were scored at the end of the experimental period. Twenty-four hours after the last behavioural test, blood was taken for estimation of blood glucose levels after an overnight fast. Animals were then euthanised, and blood was taken for estimation of plasma insulin, leptin, and adiponectin levels, and serum lipid profile. The liver, kidneys, and brain were excised and processed for general histology, while homogenates of the liver and whole brain were used to assess oxidative stress parameters. RESULTS: Results showed that dietary melatonin (compared to HFHS diet) was associated with a decrease in body weight, food intake, and novelty-induced behaviours; and an increase in spatial-working memory scores. A decrease in glucose, insulin, leptin, and malondialdehyde levels; and an increase in adiponectin levels and superoxide dismutase activity were also observed. Histomorphological/ histomorphometric examination revealed evidence of organ injury with HFHS diet, and varying degrees of amelioration with melatonin-supplemented diet. CONCLUSION: In conclusion, dietary melatonin supplementation may have beneficial effects in the management of the metabolic syndrome.
Assuntos
Peso Corporal/efeitos dos fármacos , Dieta Hiperlipídica/efeitos adversos , Açúcares da Dieta/efeitos adversos , Comportamento Exploratório/efeitos dos fármacos , Melatonina/administração & dosagem , Estresse Oxidativo/efeitos dos fármacos , Animais , Antioxidantes/administração & dosagem , Glicemia/efeitos dos fármacos , Glicemia/metabolismo , Peso Corporal/fisiologia , Encéfalo/efeitos dos fármacos , Encéfalo/metabolismo , Açúcares da Dieta/administração & dosagem , Ingestão de Alimentos/efeitos dos fármacos , Ingestão de Alimentos/fisiologia , Comportamento Exploratório/fisiologia , Rim/efeitos dos fármacos , Rim/metabolismo , Fígado/efeitos dos fármacos , Fígado/metabolismo , Masculino , Camundongos , Estresse Oxidativo/fisiologia , Distribuição AleatóriaRESUMO
Color nutrition information (CNI) based on a traffic light system conveys information about food quality with a glance. The color red typically indicates detrimental food characteristics (e.g., very high sugar content) and aims at inhibiting food shopping and consumption. Red may, however, also elicit cross-modal associations with sweet taste, which is a preferable food characteristic. We conducted two experiments. An eye-tracking study investigated whether CNI has an effect on cue reactivity (dwell time, saccadic latency, wanting/liking) for sweet foods. The participants were presented with images depicting sweets (e.g., cake). Each image was preceded by a colored circle that informed about the sugar content of the food (red = high, green = low, gray = unknown). It was tested whether the red circle would help the participants to direct their gaze away from the 'high sugar' item. A second experiment investigated whether colored prime circles (red, green, gray) without nutrition information would influence the assumed sweetness of a food. In Experiment 1, CNI had the opposite of the intended effect. Dwell time and saccadic latency were higher for food items preceded by a red compared to a green circle. This unintended response was positively associated with participants' liking of sweet foods. CNI did not change the wanting/liking of the displayed foods. In Experiment 2, we found no evidence for color priming on the assumed sweetness of food. Our results question whether CNI is helpful to influence initial cue reactivity toward sweet foods.
Assuntos
Cor , Sinais (Psicologia) , Açúcares da Dieta/administração & dosagem , Rotulagem de Alimentos , Preferências Alimentares , Sugestão , Paladar , Adolescente , Adulto , Fatores Etários , Comportamento de Escolha , Comportamento do Consumidor , Açúcares da Dieta/efeitos adversos , Feminino , Humanos , Valor Nutritivo , Estimulação Luminosa , Tempo de Reação , Recomendações Nutricionais , Movimentos Sacádicos , Fatores Sexuais , Fatores de Tempo , Adulto JovemRESUMO
This study examined the effects of a key feature of mindful eating (paying attention to the sensory properties of food) on calorie and macronutrient intake over a half-day period. Female participants (nâ¯=â¯60) were given a 635â¯kcal lunch of sandwiches, crisps and grapes. Those allocated to an experimental condition were asked to attend to the sensory properties of the food. After lunch, all participants were given 908â¯kcal of three energy dense sweet snack foods and asked to taste and rate them on several dimensions. Unknown to participants, the amounts of all foods consumed were recorded. Before they left the laboratory, participants in the experimental group were also asked to continue to pay attention to the sensory properties of their food for the rest of the day. At the end of the day all participants logged onto a website where they completed a suspicion probe and surprise online food recall measure to assess food intake outside the laboratory. Data from participants who guessed their eating was being measured were excluded. There were no differences between the experimental and control groups in terms of calories consumed during the taste test (166 versus 144â¯kcal respectively; nâ¯=â¯48) or across the entire half-day period (1456 versus 1343â¯kcal respectively; nâ¯=â¯44). There were also no differences in total intake of saturated fat, added sugar or fibre. The results fail to support other research that has shown reductions in food intake following mindful eating. This highlights the need to identify underlying mechanisms of action to better understand when this strategy is, and is not, likely to influence diet. PRE-REGISTRATION: osf.io/f4x2m.
Assuntos
Ingestão de Alimentos/psicologia , Comportamento Alimentar/psicologia , Atenção Plena , Adulto , Gorduras na Dieta/administração & dosagem , Fibras na Dieta/administração & dosagem , Açúcares da Dieta/administração & dosagem , Método Duplo-Cego , Ingestão de Energia , Feminino , Humanos , Almoço , Pessoa de Meia-Idade , Sensação , LanchesRESUMO
Perinatal taurine depletion and high sugar intake from weaning onward worsen cardiac damage and arterial pressure control after ischemia/reperfusion (IR) in adult male and female rats, which can be ameliorated by high taurine diets or inhibition of renin-angiotensin system. This study tests if taurine supplementation ameliorates cardiac damage and arterial pressure control in adult female rats via alterations of both cardiac and systemic renin-angiotensin system. Female Sprague-Dawley rats were fed normal rat chow and drank water alone (control, C) or water containing 3% beta-alanine (taurine depletion, TD) from conception to weaning, and female offspring were subjected to high sugar intake (normal rat chow and 5% glucose in water; CG and TDG) or the normal rat diet (CW and TDW). At 7 weeks of age, half of the rats in each group received 3% taurine in water (CW+T, CG+T, TDW+T, and TDG+T). One week later, rats were subjected to IR or Sham procedures followed by renal nerve recording, plasma and cardiac angiotensin II measurements. Cardiac angiotensin II levels significantly elevated in CG, TDW, and TDG. Further, plasma angiotensin II concentrations were significantly elevated only in the TDG, in consistent with a significant increase in renal nerve activity to juxtaglomerular cells, but not renal vessels and tubules. These abnormalities were ameliorated by short-term taurine supplementation. Thus, in adult female rats that are perinatally depleted of taurine followed by high sugar intake after weaning, taurine supplementation decreases the adverse effects of cardiac IR via inhibition of both cardiac and systemic renin-angiotensin system overactivity.
Assuntos
Isquemia Miocárdica , Sistema Renina-Angiotensina , Traumatismo por Reperfusão/fisiopatologia , Taurina/farmacologia , Animais , Açúcares da Dieta/administração & dosagem , Suplementos Nutricionais , Feminino , Gravidez , Ratos , Ratos Sprague-Dawley , Taurina/deficiênciaRESUMO
BACKGROUND: Timing and types of complementary feeding in infancy affect nutritional status and health later in life. The present study aimed to investigate the factors associated with early introduction of complementary feeding (i.e., before age 4 months), and factors associated with infants consumption of non-recommended foods, including sweet beverages and snack foods. METHODS: This study used cross-sectional data from the BeeBOFT study (n = 2157). Data on complementary feeding practices and potential determinants were obtained by questionnaire at infant's age of 6 months. Logistic regression models were used to investigate factors associated with early introduction of complementary feeding and infants' consumption of non-recommended foods. RESULTS: 21.4% of infants had received complementary feeding before 4 months of age. At the age of 6 months, 20.2% of all infants were consuming sweet beverages daily and 16.5% were consuming snack foods daily. Younger maternal age, lower maternal educational level, absence or shorter duration of breastfeeding, parental conviction that "my child always wants to eat when he/she sees someone eating" and not attending day-care were independently associated with both early introduction of complementary feeding and the consumption of non-recommended foods. Higher maternal pre-pregnancy BMI and infant postnatal weight gain were associated only with early introduction of complementary feeding. CONCLUSIONS: We identified several demographical, biological, behavioral, psychosocial, and social factors associated with inappropriate complementary feeding practices. These findings are relevant for designing intervention programs aimed at educating parents. TRIAL REGISTRATION: The trail is registered at Netherlands Trial Register, trail registration number: NTR1831 . Retrospectively registered on May 29, 2009.
Assuntos
Dieta , Comportamento Alimentar , Alimentos Infantis , Fenômenos Fisiológicos da Nutrição do Lactente , Valor Nutritivo , Adulto , Aleitamento Materno , Creches , Estudos Transversais , Açúcares da Dieta/administração & dosagem , Ingestão de Alimentos , Escolaridade , Feminino , Humanos , Lactente , Masculino , Idade Materna , Mães , Países Baixos , Pais , Gravidez , Estudos Retrospectivos , LanchesRESUMO
FITS (the Feeding Infants and Toddlers Study) 2016 is a national, cross-sectional survey to evaluate the diets and feeding practices of US infants and children <48 months (n = 3,235). Dietary intakes were assessed using 24-h recalls, including a replicate subsample (n = 799), to estimate usual intake distributions and compliance with dietary reference intakes using the National Cancer Institute method. Infant feeding practices and 1-day food group consumption were assessed by age and participation in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC). Initiation and duration of breastfeeding were higher in 2016 compared to previous FITS surveys. Nutrient intakes of infants were largely adequate, except for vitamins D and E and iron (18% did not meet the iron recommendations at 6-11.9 months). WIC-participating infants were more likely to meet iron recommendations, potentially due to higher use of infant formula. More nutrient inadequacies were noted among toddlers and preschoolers, including low intakes of potassium (12+ months), fiber (12+ months), and vitamins D and E (12+ months), combined with high intakes of sodium and added sugars, especially among WIC participants, and saturated fat among those 24-36 months. These imbalances result from low intakes of vegetables and whole grains, and high intakes of processed meats, sweetened bakery foods, and sugar-sweetened beverages.
Assuntos
Dieta/estatística & dados numéricos , Comportamento Alimentar , Aleitamento Materno/estatística & dados numéricos , Pré-Escolar , Estudos Transversais , Gorduras na Dieta/administração & dosagem , Açúcares da Dieta/administração & dosagem , Ingestão de Energia , Humanos , Lactente , Fenômenos Fisiológicos da Nutrição do Lactente , Recém-Nascido , Micronutrientes/administração & dosagem , Necessidades Nutricionais , Sódio na Dieta/administração & dosagem , Estados UnidosRESUMO
Dietary supplementation with the major lipotrope myo-inositol (MI) potently reduces triglyceride (TG) content and expression levels of the fatty acid synthesis genes, for example, fatty acid synthase (FASN), in rat nonalcoholic fatty liver induced by high-fructose diet. Fatty acid synthesis genes are regulated by the carbohydrate-responsive element-binding protein (ChREBP) that exists in 2 isoforms: ChREBP-α and ChREBP-ß. The gene encoding the latter isoform is more responsive to fructose. Because MI repressed the induction of fatty acid synthesis gene expression by high-fructose diet, we hypothesized that MI may reduce binding of ChREBP to the carbohydrate response elements (ChoREs) in the ChREBP-ß gene as well as in fatty acid synthesis genes in the liver. Rats were fed high-glucose, high-fructose, or high-fructose diets supplemented with MI (0.05% and 0.25%) for 2â¯weeks. Hepatic TG content and expression levels of the glucose-6-phosphate dehydrogenase, malic enzyme 1, FASN, acetyl-CoA carboxylase alpha, S14, and ChREBP-ß were remarkably elevated in rats fed with high fructose compared with the corresponding levels in high-glucose group. Notably, elevated values of these parameters in high-fructose group were reduced by MI. Similarly, high-fructose-induced ChREBP binding to the ChoREs of the ChREBP-ß and FASN genes was nominally decreased by MI. This study showed that treatment with MI reduced elevated TG content and expression of genes related to fatty acid synthesis, such as FASN and ChREBP-ß, in rat nonalcoholic fatty liver induced by high-fructose diet. Furthermore, MI treatment nominally decreased increased binding of ChREBP to the ChoREs of ChREBP-ß and FASN genes.
Assuntos
Fatores de Transcrição de Zíper de Leucina e Hélice-Alça-Hélix Básicos/metabolismo , Ácido Graxo Sintase Tipo I/metabolismo , Frutose/metabolismo , Inositol/farmacologia , Fígado/efeitos dos fármacos , Hepatopatia Gordurosa não Alcoólica/metabolismo , Triglicerídeos/metabolismo , Acetil-CoA Carboxilase/metabolismo , Animais , Fatores de Transcrição de Zíper de Leucina e Hélice-Alça-Hélix Básicos/genética , Dieta/efeitos adversos , Açúcares da Dieta/administração & dosagem , Açúcares da Dieta/efeitos adversos , Açúcares da Dieta/metabolismo , Suplementos Nutricionais , Ácido Graxo Sintase Tipo I/genética , Frutose/administração & dosagem , Frutose/efeitos adversos , Expressão Gênica , Glucosefosfato Desidrogenase/metabolismo , Inositol/uso terapêutico , Lipogênese/efeitos dos fármacos , Lipotrópicos/farmacologia , Lipotrópicos/uso terapêutico , Fígado/metabolismo , Malato Desidrogenase/metabolismo , Masculino , Hepatopatia Gordurosa não Alcoólica/tratamento farmacológico , Hepatopatia Gordurosa não Alcoólica/etiologia , Hepatopatia Gordurosa não Alcoólica/genética , Proteínas Nucleares/metabolismo , Ratos Wistar , Proteína de Ligação a Elemento Regulador de Esterol 1/genética , Proteína de Ligação a Elemento Regulador de Esterol 1/metabolismo , Fatores de Transcrição/metabolismoRESUMO
Population ageing is rapidly progressing and it is estimated that by 2050 one in every five people globally will be aged 60 years or over. Research has shown that adequate nutritional status can positively impact the ageing process, resulting in improved quality of life and the prevention of chronic disease and mortality. However, due to physiological and social changes associated with ageing, older adults may be at increased risk of nutrient deficiencies. This review aims to investigate the nutrient intake and status of older adults in Europe and to explore the potential role of fortified foods and nutritional supplements in addressing some of the nutritional challenges identified in this population group. The available literature has highlighted unfavourable intakes of total and saturated fat, sugar, salt and dietary fibre together with low intakes and suboptimal status of key micronutrients such as vitamins D, B2, B12, folate and calcium. Evidence has shown that the consumption of fortified foods and use of nutritional supplements make significant contributions to intakes and status of these micronutrients in older adults. Continued monitoring of nutrient intake and status is important in light of changing fortification practices and food consumption patterns. Future strategies to address the nutritional issues identified in older adults could include the promotion of healthy food choices together with improvements of the food supply including reformulation (fat, sugar and salt), food fortification or supplementation to support successful ageing of our populations.